易哈佛 \ 职称英语 \ 2013年职称英语考试模拟卷

2013年职称英语考试模拟卷

2013年职称英语考试模拟卷

  • 本卷共分为1大题50小题,作答时间为180分钟,总分100分,60分及格。
  • 试卷来源:易哈佛

一、单项选择题(共50题,每题2分。每题的备选项中,只有一个最符合题意)

1.1)New research published today in the journal Nature Communications, has demonstrated how glass can be manipulated to create a material that will allow computers to transfer information using light. This development could significantly increase computer processing speeds and power in the future. 2)The research by the University of Surrey, in collaboration with the University of Cambridge and the University of Southampton, has found it is possible to change the electronic properties of amorphous chalcogenides, a glass material integral to data technologies such as CDs and DVDs. By using a technique called ion doping, the team of researchers have discovered a material that could use light to bring together different computing functions into one component, leading to all-optical systems. 3)Computers currently use electrons to transfer information and process applications. On the other hand, data sources such as the internet rely on optical systems; the transfer of information using light. Optical fibres are used to send information around the world at the speed of light, but these signals then have to be converted to electrical signalsonce they reach a computer, causing a significant slowdown in processing. 4)"The challenge is to find a single material that can effectively use and control light to carry information around a computer. Much like how the web uses light to deliver information, we want to use light to both deliver and process computer data," said project leader, Dr Richard Curry of the University of Surrey. 5)"This has eluded researchers for decades, but now we have now shown how a widely used glass can be manipulated to conduct negative electrons, as well as positive charges, creating what are known as ’pn-junction’ devices. This should enable the material to act as a light source, a light guide and a light detector - something that can carry and interpret optical information. In doing so, this could transform the computers of tomorrow, allowing them to effectively process information at much faster speeds." 6)The researchers expect that the results of this research will be integrated into computers within ten years. In the short term, the glass is already being developed and used in next-generation computer memory technology known as CRAM, which may ultimately be integrated with the advances reported. Paragraph 3 ()

A.Expectation of the discovery
B.the problem of current computers
C.A new finding
D.The purpose of the research
E.Public reaction to the discovery
F.The use of the new material

2.Why Buy Shade-Grown Coffee When people argue about whether coffee is good for health, they’re usually thinking of the health of the coffee drinker. Is it food for your heart Does it increase blood pressure Does it help you concentrate However, coffee affects the health of the human population in other ways, too. Traditionally, coffee bushes were planted under the canopy(树冠)of taller indigenous(土生土长的)trees. However, more and more farmers in Latin America are deforesting the land to grow full-sun coffees. At first, this increases production because more coffee bushes can be planted if there aren’t any trees. With increased production come increased profits. Unfortunately, deforesting for coffee production immediately decreases local-wildlife habitat. Native birds nest and hide from predators(捕食者)in the tall trees and migrating birds rest there. Furthermore, in the long term, the full-sun method also damages the ecosystem because more chemical fertilizers and pesticides are needed to grow the coffee. The fertilizers and pesticides kill insects that eat coffee plant, but then the birds eat the poisoned insects and also die. The chemicals kill or sicken other animals as well, and can even enter the water that people will eventually drink. Fortunately, farmers in Central and South America are beginning to grow more coffee bushes in the shade. We can support these farmers by buying coffee with such labels as "shade grown" and "bird friendly." Sure, these varieties might cost a little more. But we’re paying for the health of the birds, the land, ourselves, and the planet. I think it’s worth it. What does increased production of full-sun coffee bring about

A.More insects.
B.Better quality coffee.
C.Larger farms.
D.Higher profits.

3.ADHD Linked to Air Pollutants Children have an increased risk of attention problems,seen as early as grade school , if their moms inhaled(吸入)a certain type of air pollution when they were pregnant. That’s the finding of a new study. Released when things aren’t burned completely, this pollution is known as polycyclic aromatic hydrocarbons, or PAHs. The biggest sources of these PAHs: the burning of fossil fuels, wood and trash. Frederica Perera works at Columbia University’s Mailman School of Public Health in New York City. She researches how exposure to things in the environment affects children’s health. In a new study , she and her team studied the exposure to air pollution of 233 nonsmoking pregnant women in New York City. Because burning tobacco can spew(排放) PAHs into the air and lungs, Perera’s team focused on nonsmokers. The researchers wanted to probe(探查) other sources of PAHs, ones that would have been hard for an individual to avoid. The team started by testing the blood of each woman during pregnancy. The reason: Any PAHs in a woman’s blood would also be available to the baby in her womb. Nine years later, the researchers investigated signs of attention problems in these children, now age 9. They asked each child’s mother a series of questions. These included whether her child had problems doing things that needed sustained(长期的) mental effort, such as homework or games with friends. The scientists also asked if the kids had trouble following instructions or made frequent, careless mistakes. All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD. About one in 10 U.S. children has ADHD. Among the women studied, traffic and home heating were the primary sources of air pollution exposure, Perera and her team suspect. Some of these women had low levels of PAHs in their blood. Others had high levels. Those with high levels were five times as likely to have children who showed attention problems by age 9. The new findings were published November 5 in the journal PLOS ONE. Nonsmoking mothers were selected because the effect of smoking on PAHs was unclear.

A.Right
B.Wrong
C.Not mentioned

4.Soot(煤烟灰)and Snow: a Hot Combination New reasearch from NASA scientists suggests emissions of black soot after the way sunlight reflects off snow. According to a computer simulation, black soot may be responsible for 25 percent of observed global warming over the past century. Soot in the higher latitudes(维度)of the Earth, where ice is more common, absorbs more of the sun’s energy and warmth than an icy, white background. Dark-colored black carbon, or soot, absorbs sunlight, while lighter colored ice reflects sunlight. Soot in areas with snow and ice may play an important role in climate change. Also, if snow and ice covered areas begin melting, the warming effect increase, as the soot becomes more concentrated on the snow surface."This provides a positive feedback, as glaciers and ice sheets melt, they tend to get even dirtier." said Dr. James Hansen, a researcher at NASA’s Goddard Institute for Space Studies, New York. Hansen found soot’s effect on snow albedo(反照率), which may be contributing to trends toward early springs in the Northern Hemisphere, such as thinninbg Arctic sea ice and melting glaciers permafrost. Soot also is believed to play a role in changes in the atmosphere above the oceans and land. "Black carbon reduces the amount of energy reflected by snow back into space, thus heading the snow surface more than if there were no black carbon, " Hansen said. Soot’s increased absorption of solar energy is especially effecntive in warming the world’s climate." This forcing is unusually effective, causing twice as much global warming as a carbon-dioxide forcing of the same magnitude." Hansen noted. Hansen cautioned, although the role of soot in altering global climate is substantial, it does not alter the fact that greenhouse gases are the primary cause of climate warming during the past century. Such gases are expected to bi the largest climate forcing for the rest of the century. The researchers found that observed warming in the Northern Hermisphere was large in the winter and spring at middle and high latitudes. These observations were coherent with the researchers’ climate model situations, which showed some of the largest warming effects occurred when there were heavy snow cover and sufficient sunlight. "This forcing" in Paragraph 5 refers to

A.sun’s heating on snow surface.
B.soot’s increased absorption of solar energy.
C.carbon-dioxide’s warming effect.
D.snow’s increased reflection of sunlight.

5.Rescue Platform In the aftermath of the terrorist attacks on the World Trade Center, security experts are trying to develop new ways of rescuing people from burning skyscrapers. One _____(51) is a platform capable of flying vertically and hovering in the air _____ (52)a helicopter. The platform would rise up and down alongside a skyscraper and pick up people _____(53)in high stories. The idea for vertical takeoff platform was hatched(策划)more than ten years ago by a Russian aerospace engineer, David Metreveli, who has since moved to Israel. Metreveli’s design _____(54)the Eagle, calls for two jet engines that_____(55) four large horizontal propellers. The spinning of the propellers _____(56) the necessary lift, or upward force, to raise the platform. The more _____(57) is supplied to the propellers, the higher the platform_____(58). Moving the platform sideways involves_____(59)differing amounts of power to each propeller. Helicopters are now used in some_____(60) to get people out of burning building. Escape baskets slung from them dangle beside the building for people to climb into._____ (61), the baskets cannot reach every floor of a building_____(62) the ropes from which they hang become unstable_____(63) a certain length. So far, Metreveli has built a small-scale model of the Eagle to_____(64) his idea. In the wake of September 11, he has been able to secure enough funding to start building a larger, 4-meter by 4-meter prototype, _____(65) he calls the Eaglet.

A.XXX
B.trapped
C.climbed
D.raised

6.1)New research published today in the journal Nature Communications, has demonstrated how glass can be manipulated to create a material that will allow computers to transfer information using light. This development could significantly increase computer processing speeds and power in the future. 2)The research by the University of Surrey, in collaboration with the University of Cambridge and the University of Southampton, has found it is possible to change the electronic properties of amorphous chalcogenides, a glass material integral to data technologies such as CDs and DVDs. By using a technique called ion doping, the team of researchers have discovered a material that could use light to bring together different computing functions into one component, leading to all-optical systems. 3)Computers currently use electrons to transfer information and process applications. On the other hand, data sources such as the internet rely on optical systems; the transfer of information using light. Optical fibres are used to send information around the world at the speed of light, but these signals then have to be converted to electrical signalsonce they reach a computer, causing a significant slowdown in processing. 4)"The challenge is to find a single material that can effectively use and control light to carry information around a computer. Much like how the web uses light to deliver information, we want to use light to both deliver and process computer data," said project leader, Dr Richard Curry of the University of Surrey. 5)"This has eluded researchers for decades, but now we have now shown how a widely used glass can be manipulated to conduct negative electrons, as well as positive charges, creating what are known as ’pn-junction’ devices. This should enable the material to act as a light source, a light guide and a light detector - something that can carry and interpret optical information. In doing so, this could transform the computers of tomorrow, allowing them to effectively process information at much faster speeds." 6)The researchers expect that the results of this research will be integrated into computers within ten years. In the short term, the glass is already being developed and used in next-generation computer memory technology known as CRAM, which may ultimately be integrated with the advances reported. Paragraph 4 ()

A.Expectation of the discovery
B.the problem of current computers
C.A new finding
D.The purpose of the research
E.Public reaction to the discovery
F.The use of the new material

7.Explore Jordan Wadi Rum is the name given to a valley cut into the sandstone and hard rock in southwest Jordan. _____(46) The name Rum most likely comes from an Aramaic word meaning “high” or “elevated”, The area around Wadi Rum is now also one of Jordan’s most important tourist destinations, and attracts an increasing number of foreign tourists, particularly trekkers(越野者),but also for camel safaris(旅行) or simply day-trippers from Aqaba or Petra. In contrast, there are almost no local or Arab tourists through Popular activities in the desert environment include camping under the stars ,riding Arab horses ,and rock-climbing amongst the massive rock formations .Jebal Rum(Jebal means mountain )is 1574 metres above sea level. _____(47). But Jordan is not simply a desert environment ——it also contains the area which is the lowest point to the face of the Earth ——the incredible Dead Sea, popular with tourists for swimming. _____(48) Once the waters reach the Dead Sea they are landlocked and have nowhere to go, so they evaporate ,leaving behind a dense ,rich cocktail(混合的)of salts and minerals that supply industry, agriculture in water spa treatments and water therapies. The Dead Sea is located in the syro-African Rift, a 4000-mile fault line in the Earth’s crust. The lowest point of dry land on Earth is the shoreline of the Dead Sea at 1300 feet below sea level .Because the lake is at the lowest point ,this means that water does not drain from it . _____(49) Figures for the Dead Sea’s salinity(盐度)today range from 25% to 35%. But the greatest tourist attraction is the incredible city of Petra. _____(50) It is a vast unique city ,carved into the sheer rock face by the Nabataeans, an industrious Arab people who settled here more than 2000 years ago, turing it into an important junction for the silk, spice and other trade routes that linked China India and southern Arabia with Egypt ,Syria ,Greece and Rome .Today ,visitors can marvel at the architecture and explore life as it was thousands of years ago . 48()

A.It is the largest wadi (riverbed) in Jordan.
B.It is the second highest peak in Jordon ,rising directly above the Rum valley opposite Jebal Urn Ishrin.
C.This vast stretch of water receives a number of incoming rivers, including the River Jordan.
D.The area has been used as a backgroud setting in a number of films.
E.Every day seven million tons of water evaporate from the lake ,but the mineral remain causing the salt content to increase .
F.It is without doubt Jordan’s most valuable treasure.

8.Soot(煤烟灰)and Snow: a Hot Combination New reasearch from NASA scientists suggests emissions of black soot after the way sunlight reflects off snow. According to a computer simulation, black soot may be responsible for 25 percent of observed global warming over the past century. Soot in the higher latitudes(维度)of the Earth, where ice is more common, absorbs more of the sun’s energy and warmth than an icy, white background. Dark-colored black carbon, or soot, absorbs sunlight, while lighter colored ice reflects sunlight. Soot in areas with snow and ice may play an important role in climate change. Also, if snow and ice covered areas begin melting, the warming effect increase, as the soot becomes more concentrated on the snow surface."This provides a positive feedback, as glaciers and ice sheets melt, they tend to get even dirtier." said Dr. James Hansen, a researcher at NASA’s Goddard Institute for Space Studies, New York. Hansen found soot’s effect on snow albedo(反照率), which may be contributing to trends toward early springs in the Northern Hemisphere, such as thinninbg Arctic sea ice and melting glaciers permafrost. Soot also is believed to play a role in changes in the atmosphere above the oceans and land. "Black carbon reduces the amount of energy reflected by snow back into space, thus heading the snow surface more than if there were no black carbon, " Hansen said. Soot’s increased absorption of solar energy is especially effecntive in warming the world’s climate." This forcing is unusually effective, causing twice as much global warming as a carbon-dioxide forcing of the same magnitude." Hansen noted. Hansen cautioned, although the role of soot in altering global climate is substantial, it does not alter the fact that greenhouse gases are the primary cause of climate warming during the past century. Such gases are expected to bi the largest climate forcing for the rest of the century. The researchers found that observed warming in the Northern Hermisphere was large in the winter and spring at middle and high latitudes. These observations were coherent with the researchers’ climate model situations, which showed some of the largest warming effects occurred when there were heavy snow cover and sufficient sunlight. What is the main cause of climate warming during the past century

A.Soot
B.Snow
C.Greenhouse gases
D.Wind

9.Why Buy Shade-Grown Coffee When people argue about whether coffee is good for health, they’re usually thinking of the health of the coffee drinker. Is it food for your heart Does it increase blood pressure Does it help you concentrate However, coffee affects the health of the human population in other ways, too. Traditionally, coffee bushes were planted under the canopy(树冠)of taller indigenous(土生土长的)trees. However, more and more farmers in Latin America are deforesting the land to grow full-sun coffees. At first, this increases production because more coffee bushes can be planted if there aren’t any trees. With increased production come increased profits. Unfortunately, deforesting for coffee production immediately decreases local-wildlife habitat. Native birds nest and hide from predators(捕食者)in the tall trees and migrating birds rest there. Furthermore, in the long term, the full-sun method also damages the ecosystem because more chemical fertilizers and pesticides are needed to grow the coffee. The fertilizers and pesticides kill insects that eat coffee plant, but then the birds eat the poisoned insects and also die. The chemicals kill or sicken other animals as well, and can even enter the water that people will eventually drink. Fortunately, farmers in Central and South America are beginning to grow more coffee bushes in the shade. We can support these farmers by buying coffee with such labels as "shade grown" and "bird friendly." Sure, these varieties might cost a little more. But we’re paying for the health of the birds, the land, ourselves, and the planet. I think it’s worth it. How do farmers find more land for growing full-sun coffee

A.They buy more land from other farmers.
B.They cut down trees.
C.They move to another country.
D.They turn grassland into farmland.

10.ADHD Linked to Air Pollutants Children have an increased risk of attention problems,seen as early as grade school , if their moms inhaled(吸入)a certain type of air pollution when they were pregnant. That’s the finding of a new study. Released when things aren’t burned completely, this pollution is known as polycyclic aromatic hydrocarbons, or PAHs. The biggest sources of these PAHs: the burning of fossil fuels, wood and trash. Frederica Perera works at Columbia University’s Mailman School of Public Health in New York City. She researches how exposure to things in the environment affects children’s health. In a new study , she and her team studied the exposure to air pollution of 233 nonsmoking pregnant women in New York City. Because burning tobacco can spew(排放) PAHs into the air and lungs, Perera’s team focused on nonsmokers. The researchers wanted to probe(探查) other sources of PAHs, ones that would have been hard for an individual to avoid. The team started by testing the blood of each woman during pregnancy. The reason: Any PAHs in a woman’s blood would also be available to the baby in her womb. Nine years later, the researchers investigated signs of attention problems in these children, now age 9. They asked each child’s mother a series of questions. These included whether her child had problems doing things that needed sustained(长期的) mental effort, such as homework or games with friends. The scientists also asked if the kids had trouble following instructions or made frequent, careless mistakes. All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD. About one in 10 U.S. children has ADHD. Among the women studied, traffic and home heating were the primary sources of air pollution exposure, Perera and her team suspect. Some of these women had low levels of PAHs in their blood. Others had high levels. Those with high levels were five times as likely to have children who showed attention problems by age 9. The new findings were published November 5 in the journal PLOS ONE. The blood of each women was tested once a month during pregnancy.

A.Right
B.Wrong
C.Not mentioned

11.Explore Jordan Wadi Rum is the name given to a valley cut into the sandstone and hard rock in southwest Jordan. _____(46) The name Rum most likely comes from an Aramaic word meaning “high” or “elevated”, The area around Wadi Rum is now also one of Jordan’s most important tourist destinations, and attracts an increasing number of foreign tourists, particularly trekkers(越野者),but also for camel safaris(旅行) or simply day-trippers from Aqaba or Petra. In contrast, there are almost no local or Arab tourists through Popular activities in the desert environment include camping under the stars ,riding Arab horses ,and rock-climbing amongst the massive rock formations .Jebal Rum(Jebal means mountain )is 1574 metres above sea level. _____(47). But Jordan is not simply a desert environment ——it also contains the area which is the lowest point to the face of the Earth ——the incredible Dead Sea, popular with tourists for swimming. _____(48) Once the waters reach the Dead Sea they are landlocked and have nowhere to go, so they evaporate ,leaving behind a dense ,rich cocktail(混合的)of salts and minerals that supply industry, agriculture in water spa treatments and water therapies. The Dead Sea is located in the syro-African Rift, a 4000-mile fault line in the Earth’s crust. The lowest point of dry land on Earth is the shoreline of the Dead Sea at 1300 feet below sea level .Because the lake is at the lowest point ,this means that water does not drain from it . _____(49) Figures for the Dead Sea’s salinity(盐度)today range from 25% to 35%. But the greatest tourist attraction is the incredible city of Petra. _____(50) It is a vast unique city ,carved into the sheer rock face by the Nabataeans, an industrious Arab people who settled here more than 2000 years ago, turing it into an important junction for the silk, spice and other trade routes that linked China India and southern Arabia with Egypt ,Syria ,Greece and Rome .Today ,visitors can marvel at the architecture and explore life as it was thousands of years ago . 49()

A.It is the largest wadi (riverbed) in Jordan.
B.It is the second highest peak in Jordon ,rising directly above the Rum valley opposite Jebal Urn Ishrin.
C.This vast stretch of water receives a number of incoming rivers, including the River Jordan.
D.The area has been used as a backgroud setting in a number of films.
E.Every day seven million tons of water evaporate from the lake ,but the mineral remain causing the salt content to increase .
F.It is without doubt Jordan’s most valuable treasure.

12.Why Buy Shade-Grown Coffee When people argue about whether coffee is good for health, they’re usually thinking of the health of the coffee drinker. Is it food for your heart Does it increase blood pressure Does it help you concentrate However, coffee affects the health of the human population in other ways, too. Traditionally, coffee bushes were planted under the canopy(树冠)of taller indigenous(土生土长的)trees. However, more and more farmers in Latin America are deforesting the land to grow full-sun coffees. At first, this increases production because more coffee bushes can be planted if there aren’t any trees. With increased production come increased profits. Unfortunately, deforesting for coffee production immediately decreases local-wildlife habitat. Native birds nest and hide from predators(捕食者)in the tall trees and migrating birds rest there. Furthermore, in the long term, the full-sun method also damages the ecosystem because more chemical fertilizers and pesticides are needed to grow the coffee. The fertilizers and pesticides kill insects that eat coffee plant, but then the birds eat the poisoned insects and also die. The chemicals kill or sicken other animals as well, and can even enter the water that people will eventually drink. Fortunately, farmers in Central and South America are beginning to grow more coffee bushes in the shade. We can support these farmers by buying coffee with such labels as "shade grown" and "bird friendly." Sure, these varieties might cost a little more. But we’re paying for the health of the birds, the land, ourselves, and the planet. I think it’s worth it. The full-sun method may affect the following EXCEPT_____.

A.insects
B.air
C.brids
D.humans

13.1)New research published today in the journal Nature Communications, has demonstrated how glass can be manipulated to create a material that will allow computers to transfer information using light. This development could significantly increase computer processing speeds and power in the future. 2)The research by the University of Surrey, in collaboration with the University of Cambridge and the University of Southampton, has found it is possible to change the electronic properties of amorphous chalcogenides, a glass material integral to data technologies such as CDs and DVDs. By using a technique called ion doping, the team of researchers have discovered a material that could use light to bring together different computing functions into one component, leading to all-optical systems. 3)Computers currently use electrons to transfer information and process applications. On the other hand, data sources such as the internet rely on optical systems; the transfer of information using light. Optical fibres are used to send information around the world at the speed of light, but these signals then have to be converted to electrical signalsonce they reach a computer, causing a significant slowdown in processing. 4)"The challenge is to find a single material that can effectively use and control light to carry information around a computer. Much like how the web uses light to deliver information, we want to use light to both deliver and process computer data," said project leader, Dr Richard Curry of the University of Surrey. 5)"This has eluded researchers for decades, but now we have now shown how a widely used glass can be manipulated to conduct negative electrons, as well as positive charges, creating what are known as ’pn-junction’ devices. This should enable the material to act as a light source, a light guide and a light detector - something that can carry and interpret optical information. In doing so, this could transform the computers of tomorrow, allowing them to effectively process information at much faster speeds." 6)The researchers expect that the results of this research will be integrated into computers within ten years. In the short term, the glass is already being developed and used in next-generation computer memory technology known as CRAM, which may ultimately be integrated with the advances reported. Paragraph 5 ()

A.Expectation of the discovery
B.the problem of current computers
C.A new finding
D.The purpose of the research
E.Public reaction to the discovery
F.The use of the new material

14.Soot(煤烟灰)and Snow: a Hot Combination New reasearch from NASA scientists suggests emissions of black soot after the way sunlight reflects off snow. According to a computer simulation, black soot may be responsible for 25 percent of observed global warming over the past century. Soot in the higher latitudes(维度)of the Earth, where ice is more common, absorbs more of the sun’s energy and warmth than an icy, white background. Dark-colored black carbon, or soot, absorbs sunlight, while lighter colored ice reflects sunlight. Soot in areas with snow and ice may play an important role in climate change. Also, if snow and ice covered areas begin melting, the warming effect increase, as the soot becomes more concentrated on the snow surface."This provides a positive feedback, as glaciers and ice sheets melt, they tend to get even dirtier." said Dr. James Hansen, a researcher at NASA’s Goddard Institute for Space Studies, New York. Hansen found soot’s effect on snow albedo(反照率), which may be contributing to trends toward early springs in the Northern Hemisphere, such as thinninbg Arctic sea ice and melting glaciers permafrost. Soot also is believed to play a role in changes in the atmosphere above the oceans and land. "Black carbon reduces the amount of energy reflected by snow back into space, thus heading the snow surface more than if there were no black carbon, " Hansen said. Soot’s increased absorption of solar energy is especially effecntive in warming the world’s climate." This forcing is unusually effective, causing twice as much global warming as a carbon-dioxide forcing of the same magnitude." Hansen noted. Hansen cautioned, although the role of soot in altering global climate is substantial, it does not alter the fact that greenhouse gases are the primary cause of climate warming during the past century. Such gases are expected to bi the largest climate forcing for the rest of the century. The researchers found that observed warming in the Northern Hermisphere was large in the winter and spring at middle and high latitudes. These observations were coherent with the researchers’ climate model situations, which showed some of the largest warming effects occurred when there were heavy snow cover and sufficient sunlight. The largest warming effects happened in the Northern Hemisphere with

A.X sea ice and insufficient sunlight.
B.light snow cover and sufficient sunlight.
C.heavy snow cover and sufficient sunlight.
D.thick sea ice and insufficient sunlight.

15.Rescue Platform In the aftermath of the terrorist attacks on the World Trade Center, security experts are trying to develop new ways of rescuing people from burning skyscrapers. One _____(51) is a platform capable of flying vertically and hovering in the air _____ (52)a helicopter. The platform would rise up and down alongside a skyscraper and pick up people _____(53)in high stories. The idea for vertical takeoff platform was hatched(策划)more than ten years ago by a Russian aerospace engineer, David Metreveli, who has since moved to Israel. Metreveli’s design _____(54)the Eagle, calls for two jet engines that_____(55) four large horizontal propellers. The spinning of the propellers _____(56) the necessary lift, or upward force, to raise the platform. The more _____(57) is supplied to the propellers, the higher the platform_____(58). Moving the platform sideways involves_____(59)differing amounts of power to each propeller. Helicopters are now used in some_____(60) to get people out of burning building. Escape baskets slung from them dangle beside the building for people to climb into._____ (61), the baskets cannot reach every floor of a building_____(62) the ropes from which they hang become unstable_____(63) a certain length. So far, Metreveli has built a small-scale model of the Eagle to_____(64) his idea. In the wake of September 11, he has been able to secure enough funding to start building a larger, 4-meter by 4-meter prototype, _____(65) he calls the Eaglet.

A.change
B.move
C.turn
D.shut

16.ADHD Linked to Air Pollutants Children have an increased risk of attention problems,seen as early as grade school , if their moms inhaled(吸入)a certain type of air pollution when they were pregnant. That’s the finding of a new study. Released when things aren’t burned completely, this pollution is known as polycyclic aromatic hydrocarbons, or PAHs. The biggest sources of these PAHs: the burning of fossil fuels, wood and trash. Frederica Perera works at Columbia University’s Mailman School of Public Health in New York City. She researches how exposure to things in the environment affects children’s health. In a new study , she and her team studied the exposure to air pollution of 233 nonsmoking pregnant women in New York City. Because burning tobacco can spew(排放) PAHs into the air and lungs, Perera’s team focused on nonsmokers. The researchers wanted to probe(探查) other sources of PAHs, ones that would have been hard for an individual to avoid. The team started by testing the blood of each woman during pregnancy. The reason: Any PAHs in a woman’s blood would also be available to the baby in her womb. Nine years later, the researchers investigated signs of attention problems in these children, now age 9. They asked each child’s mother a series of questions. These included whether her child had problems doing things that needed sustained(长期的) mental effort, such as homework or games with friends. The scientists also asked if the kids had trouble following instructions or made frequent, careless mistakes. All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD. About one in 10 U.S. children has ADHD. Among the women studied, traffic and home heating were the primary sources of air pollution exposure, Perera and her team suspect. Some of these women had low levels of PAHs in their blood. Others had high levels. Those with high levels were five times as likely to have children who showed attention problems by age 9. The new findings were published November 5 in the journal PLOS ONE. Kids with ADHD commonly fail in school.

A.Right
B.Wrong
C.Not mentioned

17.Explore Jordan Wadi Rum is the name given to a valley cut into the sandstone and hard rock in southwest Jordan. _____(46) The name Rum most likely comes from an Aramaic word meaning “high” or “elevated”, The area around Wadi Rum is now also one of Jordan’s most important tourist destinations, and attracts an increasing number of foreign tourists, particularly trekkers(越野者),but also for camel safaris(旅行) or simply day-trippers from Aqaba or Petra. In contrast, there are almost no local or Arab tourists through Popular activities in the desert environment include camping under the stars ,riding Arab horses ,and rock-climbing amongst the massive rock formations .Jebal Rum(Jebal means mountain )is 1574 metres above sea level. _____(47). But Jordan is not simply a desert environment ——it also contains the area which is the lowest point to the face of the Earth ——the incredible Dead Sea, popular with tourists for swimming. _____(48) Once the waters reach the Dead Sea they are landlocked and have nowhere to go, so they evaporate ,leaving behind a dense ,rich cocktail(混合的)of salts and minerals that supply industry, agriculture in water spa treatments and water therapies. The Dead Sea is located in the syro-African Rift, a 4000-mile fault line in the Earth’s crust. The lowest point of dry land on Earth is the shoreline of the Dead Sea at 1300 feet below sea level .Because the lake is at the lowest point ,this means that water does not drain from it . _____(49) Figures for the Dead Sea’s salinity(盐度)today range from 25% to 35%. But the greatest tourist attraction is the incredible city of Petra. _____(50) It is a vast unique city ,carved into the sheer rock face by the Nabataeans, an industrious Arab people who settled here more than 2000 years ago, turing it into an important junction for the silk, spice and other trade routes that linked China India and southern Arabia with Egypt ,Syria ,Greece and Rome .Today ,visitors can marvel at the architecture and explore life as it was thousands of years ago . 50()

A.It is the largest wadi (riverbed) in Jordan.
B.It is the second highest peak in Jordon ,rising directly above the Rum valley opposite Jebal Urn Ishrin.
C.This vast stretch of water receives a number of incoming rivers, including the River Jordan.
D.The area has been used as a backgroud setting in a number of films.
E.Every day seven million tons of water evaporate from the lake ,but the mineral remain causing the salt content to increase .
F.It is without doubt Jordan’s most valuable treasure.

18.Rescue Platform In the aftermath of the terrorist attacks on the World Trade Center, security experts are trying to develop new ways of rescuing people from burning skyscrapers. One _____(51) is a platform capable of flying vertically and hovering in the air _____ (52)a helicopter. The platform would rise up and down alongside a skyscraper and pick up people _____(53)in high stories. The idea for vertical takeoff platform was hatched(策划)more than ten years ago by a Russian aerospace engineer, David Metreveli, who has since moved to Israel. Metreveli’s design _____(54)the Eagle, calls for two jet engines that_____(55) four large horizontal propellers. The spinning of the propellers _____(56) the necessary lift, or upward force, to raise the platform. The more _____(57) is supplied to the propellers, the higher the platform_____(58). Moving the platform sideways involves_____(59)differing amounts of power to each propeller. Helicopters are now used in some_____(60) to get people out of burning building. Escape baskets slung from them dangle beside the building for people to climb into._____ (61), the baskets cannot reach every floor of a building_____(62) the ropes from which they hang become unstable_____(63) a certain length. So far, Metreveli has built a small-scale model of the Eagle to_____(64) his idea. In the wake of September 11, he has been able to secure enough funding to start building a larger, 4-meter by 4-meter prototype, _____(65) he calls the Eaglet.

A.sends
B.keeps
C.opens
D.generates

19.1)New research published today in the journal Nature Communications, has demonstrated how glass can be manipulated to create a material that will allow computers to transfer information using light. This development could significantly increase computer processing speeds and power in the future. 2)The research by the University of Surrey, in collaboration with the University of Cambridge and the University of Southampton, has found it is possible to change the electronic properties of amorphous chalcogenides, a glass material integral to data technologies such as CDs and DVDs. By using a technique called ion doping, the team of researchers have discovered a material that could use light to bring together different computing functions into one component, leading to all-optical systems. 3)Computers currently use electrons to transfer information and process applications. On the other hand, data sources such as the internet rely on optical systems; the transfer of information using light. Optical fibres are used to send information around the world at the speed of light, but these signals then have to be converted to electrical signalsonce they reach a computer, causing a significant slowdown in processing. 4)"The challenge is to find a single material that can effectively use and control light to carry information around a computer. Much like how the web uses light to deliver information, we want to use light to both deliver and process computer data," said project leader, Dr Richard Curry of the University of Surrey. 5)"This has eluded researchers for decades, but now we have now shown how a widely used glass can be manipulated to conduct negative electrons, as well as positive charges, creating what are known as ’pn-junction’ devices. This should enable the material to act as a light source, a light guide and a light detector - something that can carry and interpret optical information. In doing so, this could transform the computers of tomorrow, allowing them to effectively process information at much faster speeds." 6)The researchers expect that the results of this research will be integrated into computers within ten years. In the short term, the glass is already being developed and used in next-generation computer memory technology known as CRAM, which may ultimately be integrated with the advances reported. The result of the research can help computers to increase ().

A.optical information
B.processing speeds
C.electrons
D.positive charges
E.data technologies
F.all-optical systems

20.ADHD Linked to Air Pollutants Children have an increased risk of attention problems,seen as early as grade school , if their moms inhaled(吸入)a certain type of air pollution when they were pregnant. That’s the finding of a new study. Released when things aren’t burned completely, this pollution is known as polycyclic aromatic hydrocarbons, or PAHs. The biggest sources of these PAHs: the burning of fossil fuels, wood and trash. Frederica Perera works at Columbia University’s Mailman School of Public Health in New York City. She researches how exposure to things in the environment affects children’s health. In a new study , she and her team studied the exposure to air pollution of 233 nonsmoking pregnant women in New York City. Because burning tobacco can spew(排放) PAHs into the air and lungs, Perera’s team focused on nonsmokers. The researchers wanted to probe(探查) other sources of PAHs, ones that would have been hard for an individual to avoid. The team started by testing the blood of each woman during pregnancy. The reason: Any PAHs in a woman’s blood would also be available to the baby in her womb. Nine years later, the researchers investigated signs of attention problems in these children, now age 9. They asked each child’s mother a series of questions. These included whether her child had problems doing things that needed sustained(长期的) mental effort, such as homework or games with friends. The scientists also asked if the kids had trouble following instructions or made frequent, careless mistakes. All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD. About one in 10 U.S. children has ADHD. Among the women studied, traffic and home heating were the primary sources of air pollution exposure, Perera and her team suspect. Some of these women had low levels of PAHs in their blood. Others had high levels. Those with high levels were five times as likely to have children who showed attention problems by age 9. The new findings were published November 5 in the journal PLOS ONE. The women with high levels of PAHs in their blood were more likely to have kids with ADHD.

A.Right
B.Wrong
C.Not mentioned

21.ADHD Linked to Air Pollutants Children have an increased risk of attention problems,seen as early as grade school , if their moms inhaled(吸入)a certain type of air pollution when they were pregnant. That’s the finding of a new study. Released when things aren’t burned completely, this pollution is known as polycyclic aromatic hydrocarbons, or PAHs. The biggest sources of these PAHs: the burning of fossil fuels, wood and trash. Frederica Perera works at Columbia University’s Mailman School of Public Health in New York City. She researches how exposure to things in the environment affects children’s health. In a new study , she and her team studied the exposure to air pollution of 233 nonsmoking pregnant women in New York City. Because burning tobacco can spew(排放) PAHs into the air and lungs, Perera’s team focused on nonsmokers. The researchers wanted to probe(探查) other sources of PAHs, ones that would have been hard for an individual to avoid. The team started by testing the blood of each woman during pregnancy. The reason: Any PAHs in a woman’s blood would also be available to the baby in her womb. Nine years later, the researchers investigated signs of attention problems in these children, now age 9. They asked each child’s mother a series of questions. These included whether her child had problems doing things that needed sustained(长期的) mental effort, such as homework or games with friends. The scientists also asked if the kids had trouble following instructions or made frequent, careless mistakes. All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD. About one in 10 U.S. children has ADHD. Among the women studied, traffic and home heating were the primary sources of air pollution exposure, Perera and her team suspect. Some of these women had low levels of PAHs in their blood. Others had high levels. Those with high levels were five times as likely to have children who showed attention problems by age 9. The new findings were published November 5 in the journal PLOS ONE. Traffic and home heating were considered to be the biggest sources of PAHs for the subjects in the research.

A.Right
B.Wrong
C.Not mentioned

22.Rescue Platform In the aftermath of the terrorist attacks on the World Trade Center, security experts are trying to develop new ways of rescuing people from burning skyscrapers. One _____(51) is a platform capable of flying vertically and hovering in the air _____ (52)a helicopter. The platform would rise up and down alongside a skyscraper and pick up people _____(53)in high stories. The idea for vertical takeoff platform was hatched(策划)more than ten years ago by a Russian aerospace engineer, David Metreveli, who has since moved to Israel. Metreveli’s design _____(54)the Eagle, calls for two jet engines that_____(55) four large horizontal propellers. The spinning of the propellers _____(56) the necessary lift, or upward force, to raise the platform. The more _____(57) is supplied to the propellers, the higher the platform_____(58). Moving the platform sideways involves_____(59)differing amounts of power to each propeller. Helicopters are now used in some_____(60) to get people out of burning building. Escape baskets slung from them dangle beside the building for people to climb into._____ (61), the baskets cannot reach every floor of a building_____(62) the ropes from which they hang become unstable_____(63) a certain length. So far, Metreveli has built a small-scale model of the Eagle to_____(64) his idea. In the wake of September 11, he has been able to secure enough funding to start building a larger, 4-meter by 4-meter prototype, _____(65) he calls the Eaglet.

A.power
B.sense
C.feature
D.model

23.1)New research published today in the journal Nature Communications, has demonstrated how glass can be manipulated to create a material that will allow computers to transfer information using light. This development could significantly increase computer processing speeds and power in the future. 2)The research by the University of Surrey, in collaboration with the University of Cambridge and the University of Southampton, has found it is possible to change the electronic properties of amorphous chalcogenides, a glass material integral to data technologies such as CDs and DVDs. By using a technique called ion doping, the team of researchers have discovered a material that could use light to bring together different computing functions into one component, leading to all-optical systems. 3)Computers currently use electrons to transfer information and process applications. On the other hand, data sources such as the internet rely on optical systems; the transfer of information using light. Optical fibres are used to send information around the world at the speed of light, but these signals then have to be converted to electrical signalsonce they reach a computer, causing a significant slowdown in processing. 4)"The challenge is to find a single material that can effectively use and control light to carry information around a computer. Much like how the web uses light to deliver information, we want to use light to both deliver and process computer data," said project leader, Dr Richard Curry of the University of Surrey. 5)"This has eluded researchers for decades, but now we have now shown how a widely used glass can be manipulated to conduct negative electrons, as well as positive charges, creating what are known as ’pn-junction’ devices. This should enable the material to act as a light source, a light guide and a light detector - something that can carry and interpret optical information. In doing so, this could transform the computers of tomorrow, allowing them to effectively process information at much faster speeds." 6)The researchers expect that the results of this research will be integrated into computers within ten years. In the short term, the glass is already being developed and used in next-generation computer memory technology known as CRAM, which may ultimately be integrated with the advances reported. Current computers transfer information using ()

A.optical information
B.processing speeds
C.electrons
D.positive charges
E.data technologies
F.all-optical systems

24.Rescue Platform In the aftermath of the terrorist attacks on the World Trade Center, security experts are trying to develop new ways of rescuing people from burning skyscrapers. One _____(51) is a platform capable of flying vertically and hovering in the air _____ (52)a helicopter. The platform would rise up and down alongside a skyscraper and pick up people _____(53)in high stories. The idea for vertical takeoff platform was hatched(策划)more than ten years ago by a Russian aerospace engineer, David Metreveli, who has since moved to Israel. Metreveli’s design _____(54)the Eagle, calls for two jet engines that_____(55) four large horizontal propellers. The spinning of the propellers _____(56) the necessary lift, or upward force, to raise the platform. The more _____(57) is supplied to the propellers, the higher the platform_____(58). Moving the platform sideways involves_____(59)differing amounts of power to each propeller. Helicopters are now used in some_____(60) to get people out of burning building. Escape baskets slung from them dangle beside the building for people to climb into._____ (61), the baskets cannot reach every floor of a building_____(62) the ropes from which they hang become unstable_____(63) a certain length. So far, Metreveli has built a small-scale model of the Eagle to_____(64) his idea. In the wake of September 11, he has been able to secure enough funding to start building a larger, 4-meter by 4-meter prototype, _____(65) he calls the Eaglet.

A.stays
B.rises
C.stars
D.runs

25.1)New research published today in the journal Nature Communications, has demonstrated how glass can be manipulated to create a material that will allow computers to transfer information using light. This development could significantly increase computer processing speeds and power in the future. 2)The research by the University of Surrey, in collaboration with the University of Cambridge and the University of Southampton, has found it is possible to change the electronic properties of amorphous chalcogenides, a glass material integral to data technologies such as CDs and DVDs. By using a technique called ion doping, the team of researchers have discovered a material that could use light to bring together different computing functions into one component, leading to all-optical systems. 3)Computers currently use electrons to transfer information and process applications. On the other hand, data sources such as the internet rely on optical systems; the transfer of information using light. Optical fibres are used to send information around the world at the speed of light, but these signals then have to be converted to electrical signalsonce they reach a computer, causing a significant slowdown in processing. 4)"The challenge is to find a single material that can effectively use and control light to carry information around a computer. Much like how the web uses light to deliver information, we want to use light to both deliver and process computer data," said project leader, Dr Richard Curry of the University of Surrey. 5)"This has eluded researchers for decades, but now we have now shown how a widely used glass can be manipulated to conduct negative electrons, as well as positive charges, creating what are known as ’pn-junction’ devices. This should enable the material to act as a light source, a light guide and a light detector - something that can carry and interpret optical information. In doing so, this could transform the computers of tomorrow, allowing them to effectively process information at much faster speeds." 6)The researchers expect that the results of this research will be integrated into computers within ten years. In the short term, the glass is already being developed and used in next-generation computer memory technology known as CRAM, which may ultimately be integrated with the advances reported. The new glass material makes it possible to fulfill different computing function ()

A.optical information
B.processing speeds
C.electrons
D.positive charges
E.data technologies
F.all-optical systems

26.Rescue Platform In the aftermath of the terrorist attacks on the World Trade Center, security experts are trying to develop new ways of rescuing people from burning skyscrapers. One _____(51) is a platform capable of flying vertically and hovering in the air _____ (52)a helicopter. The platform would rise up and down alongside a skyscraper and pick up people _____(53)in high stories. The idea for vertical takeoff platform was hatched(策划)more than ten years ago by a Russian aerospace engineer, David Metreveli, who has since moved to Israel. Metreveli’s design _____(54)the Eagle, calls for two jet engines that_____(55) four large horizontal propellers. The spinning of the propellers _____(56) the necessary lift, or upward force, to raise the platform. The more _____(57) is supplied to the propellers, the higher the platform_____(58). Moving the platform sideways involves_____(59)differing amounts of power to each propeller. Helicopters are now used in some_____(60) to get people out of burning building. Escape baskets slung from them dangle beside the building for people to climb into._____ (61), the baskets cannot reach every floor of a building_____(62) the ropes from which they hang become unstable_____(63) a certain length. So far, Metreveli has built a small-scale model of the Eagle to_____(64) his idea. In the wake of September 11, he has been able to secure enough funding to start building a larger, 4-meter by 4-meter prototype, _____(65) he calls the Eaglet.

A.reducing
B.comparing
C.developing
D.applying

27.1)New research published today in the journal Nature Communications, has demonstrated how glass can be manipulated to create a material that will allow computers to transfer information using light. This development could significantly increase computer processing speeds and power in the future. 2)The research by the University of Surrey, in collaboration with the University of Cambridge and the University of Southampton, has found it is possible to change the electronic properties of amorphous chalcogenides, a glass material integral to data technologies such as CDs and DVDs. By using a technique called ion doping, the team of researchers have discovered a material that could use light to bring together different computing functions into one component, leading to all-optical systems. 3)Computers currently use electrons to transfer information and process applications. On the other hand, data sources such as the internet rely on optical systems; the transfer of information using light. Optical fibres are used to send information around the world at the speed of light, but these signals then have to be converted to electrical signalsonce they reach a computer, causing a significant slowdown in processing. 4)"The challenge is to find a single material that can effectively use and control light to carry information around a computer. Much like how the web uses light to deliver information, we want to use light to both deliver and process computer data," said project leader, Dr Richard Curry of the University of Surrey. 5)"This has eluded researchers for decades, but now we have now shown how a widely used glass can be manipulated to conduct negative electrons, as well as positive charges, creating what are known as ’pn-junction’ devices. This should enable the material to act as a light source, a light guide and a light detector - something that can carry and interpret optical information. In doing so, this could transform the computers of tomorrow, allowing them to effectively process information at much faster speeds." 6)The researchers expect that the results of this research will be integrated into computers within ten years. In the short term, the glass is already being developed and used in next-generation computer memory technology known as CRAM, which may ultimately be integrated with the advances reported. Glass is used in the research to carry and process ().

A.optical information
B.processing speeds
C.electrons
D.positive charges
E.data technologies
F.all-optical systems

28.Rescue Platform In the aftermath of the terrorist attacks on the World Trade Center, security experts are trying to develop new ways of rescuing people from burning skyscrapers. One _____(51) is a platform capable of flying vertically and hovering in the air _____ (52)a helicopter. The platform would rise up and down alongside a skyscraper and pick up people _____(53)in high stories. The idea for vertical takeoff platform was hatched(策划)more than ten years ago by a Russian aerospace engineer, David Metreveli, who has since moved to Israel. Metreveli’s design _____(54)the Eagle, calls for two jet engines that_____(55) four large horizontal propellers. The spinning of the propellers _____(56) the necessary lift, or upward force, to raise the platform. The more _____(57) is supplied to the propellers, the higher the platform_____(58). Moving the platform sideways involves_____(59)differing amounts of power to each propeller. Helicopters are now used in some_____(60) to get people out of burning building. Escape baskets slung from them dangle beside the building for people to climb into._____ (61), the baskets cannot reach every floor of a building_____(62) the ropes from which they hang become unstable_____(63) a certain length. So far, Metreveli has built a small-scale model of the Eagle to_____(64) his idea. In the wake of September 11, he has been able to secure enough funding to start building a larger, 4-meter by 4-meter prototype, _____(65) he calls the Eaglet.

A.kinds
B.cases
C.stories
D.products

29.Rescue Platform In the aftermath of the terrorist attacks on the World Trade Center, security experts are trying to develop new ways of rescuing people from burning skyscrapers. One _____(51) is a platform capable of flying vertically and hovering in the air _____ (52)a helicopter. The platform would rise up and down alongside a skyscraper and pick up people _____(53)in high stories. The idea for vertical takeoff platform was hatched(策划)more than ten years ago by a Russian aerospace engineer, David Metreveli, who has since moved to Israel. Metreveli’s design _____(54)the Eagle, calls for two jet engines that_____(55) four large horizontal propellers. The spinning of the propellers _____(56) the necessary lift, or upward force, to raise the platform. The more _____(57) is supplied to the propellers, the higher the platform_____(58). Moving the platform sideways involves_____(59)differing amounts of power to each propeller. Helicopters are now used in some_____(60) to get people out of burning building. Escape baskets slung from them dangle beside the building for people to climb into._____ (61), the baskets cannot reach every floor of a building_____(62) the ropes from which they hang become unstable_____(63) a certain length. So far, Metreveli has built a small-scale model of the Eagle to_____(64) his idea. In the wake of September 11, he has been able to secure enough funding to start building a larger, 4-meter by 4-meter prototype, _____(65) he calls the Eaglet.

A.Unfortunately
B.Uncertainly
C.Unimportantly
D.Unexpectedly

30.Rescue Platform In the aftermath of the terrorist attacks on the World Trade Center, security experts are trying to develop new ways of rescuing people from burning skyscrapers. One _____(51) is a platform capable of flying vertically and hovering in the air _____ (52)a helicopter. The platform would rise up and down alongside a skyscraper and pick up people _____(53)in high stories. The idea for vertical takeoff platform was hatched(策划)more than ten years ago by a Russian aerospace engineer, David Metreveli, who has since moved to Israel. Metreveli’s design _____(54)the Eagle, calls for two jet engines that_____(55) four large horizontal propellers. The spinning of the propellers _____(56) the necessary lift, or upward force, to raise the platform. The more _____(57) is supplied to the propellers, the higher the platform_____(58). Moving the platform sideways involves_____(59)differing amounts of power to each propeller. Helicopters are now used in some_____(60) to get people out of burning building. Escape baskets slung from them dangle beside the building for people to climb into._____ (61), the baskets cannot reach every floor of a building_____(62) the ropes from which they hang become unstable_____(63) a certain length. So far, Metreveli has built a small-scale model of the Eagle to_____(64) his idea. In the wake of September 11, he has been able to secure enough funding to start building a larger, 4-meter by 4-meter prototype, _____(65) he calls the Eaglet.

A.before
B.because
C.until
D.however

31.Rescue Platform In the aftermath of the terrorist attacks on the World Trade Center, security experts are trying to develop new ways of rescuing people from burning skyscrapers. One _____(51) is a platform capable of flying vertically and hovering in the air _____ (52)a helicopter. The platform would rise up and down alongside a skyscraper and pick up people _____(53)in high stories. The idea for vertical takeoff platform was hatched(策划)more than ten years ago by a Russian aerospace engineer, David Metreveli, who has since moved to Israel. Metreveli’s design _____(54)the Eagle, calls for two jet engines that_____(55) four large horizontal propellers. The spinning of the propellers _____(56) the necessary lift, or upward force, to raise the platform. The more _____(57) is supplied to the propellers, the higher the platform_____(58). Moving the platform sideways involves_____(59)differing amounts of power to each propeller. Helicopters are now used in some_____(60) to get people out of burning building. Escape baskets slung from them dangle beside the building for people to climb into._____ (61), the baskets cannot reach every floor of a building_____(62) the ropes from which they hang become unstable_____(63) a certain length. So far, Metreveli has built a small-scale model of the Eagle to_____(64) his idea. In the wake of September 11, he has been able to secure enough funding to start building a larger, 4-meter by 4-meter prototype, _____(65) he calls the Eaglet.

A.beyond
B.under
C.off
D.on

32.Rescue Platform In the aftermath of the terrorist attacks on the World Trade Center, security experts are trying to develop new ways of rescuing people from burning skyscrapers. One _____(51) is a platform capable of flying vertically and hovering in the air _____ (52)a helicopter. The platform would rise up and down alongside a skyscraper and pick up people _____(53)in high stories. The idea for vertical takeoff platform was hatched(策划)more than ten years ago by a Russian aerospace engineer, David Metreveli, who has since moved to Israel. Metreveli’s design _____(54)the Eagle, calls for two jet engines that_____(55) four large horizontal propellers. The spinning of the propellers _____(56) the necessary lift, or upward force, to raise the platform. The more _____(57) is supplied to the propellers, the higher the platform_____(58). Moving the platform sideways involves_____(59)differing amounts of power to each propeller. Helicopters are now used in some_____(60) to get people out of burning building. Escape baskets slung from them dangle beside the building for people to climb into._____ (61), the baskets cannot reach every floor of a building_____(62) the ropes from which they hang become unstable_____(63) a certain length. So far, Metreveli has built a small-scale model of the Eagle to_____(64) his idea. In the wake of September 11, he has been able to secure enough funding to start building a larger, 4-meter by 4-meter prototype, _____(65) he calls the Eaglet.

A.tell
B.test
C.discuss
D.report

33.Rescue Platform In the aftermath of the terrorist attacks on the World Trade Center, security experts are trying to develop new ways of rescuing people from burning skyscrapers. One _____(51) is a platform capable of flying vertically and hovering in the air _____ (52)a helicopter. The platform would rise up and down alongside a skyscraper and pick up people _____(53)in high stories. The idea for vertical takeoff platform was hatched(策划)more than ten years ago by a Russian aerospace engineer, David Metreveli, who has since moved to Israel. Metreveli’s design _____(54)the Eagle, calls for two jet engines that_____(55) four large horizontal propellers. The spinning of the propellers _____(56) the necessary lift, or upward force, to raise the platform. The more _____(57) is supplied to the propellers, the higher the platform_____(58). Moving the platform sideways involves_____(59)differing amounts of power to each propeller. Helicopters are now used in some_____(60) to get people out of burning building. Escape baskets slung from them dangle beside the building for people to climb into._____ (61), the baskets cannot reach every floor of a building_____(62) the ropes from which they hang become unstable_____(63) a certain length. So far, Metreveli has built a small-scale model of the Eagle to_____(64) his idea. In the wake of September 11, he has been able to secure enough funding to start building a larger, 4-meter by 4-meter prototype, _____(65) he calls the Eaglet.

A.who
B.which
C.where
D.what

34.I will not tolerate that sort of behavior in my class.

A.accept
B.control
C.observe
D.regulate

35.The organization was bold enough to face the press.

A.pleased
B.powerful
C.brave
D.sensible

37.Most people find rejection hard to accept.

A.excuse
B.client
C.destiny
D.refusal

38.The doctors did not reveal the truth to him.

A.hide
B.handle
C.disclose
D.establish

39.She’s extremely competent and industrious

A.hardworking
B.honest
C.objective
D.independent

40.He tried to assemble his thoughts.

A.clear
B.share
C.gather
D.spare

41.The law carries a penalty of up to three years in prison.

A.message
B.punishment
C.guilt
D.obligation

42.Prisoners were kept in the most appalling conditions.

A.flexible
B.terrible
C.reasonable
D.serious

43.These products are inferior to those we brought last year.

A.poorer than
B.narrower than
C.larger than
D.richer than

44.The political situation in the region has deteriorated rapidly.

A.improved
B.changed
C.worsened
D.developed

47.He said some harsh words about his brother.

A.unkind
B.proper
C.normal
D.unclear

48.ADHD Linked to Air Pollutants Children have an increased of attention problems, seen as early as grade school. If their noses inhaled(吸入)a certain type of air pollution when they were pregnant. That’s the finding of a new study. Released when things aren’t burned completely, this pollution is known as polycyclic aromatic hydrocarbons, or PAHs. The biggest sources of these PAHs: the burning of fossil fuels, wood and trash. Frederica Perera works at Columbia University’s Mailman School of Public Health is New York City. She researches how exposure to things in the environment affects children’s health in a new study, she and her team studied the exposure to air pollution of 233 nonsmoking pregnant women in New York City. Because burning tobacco can spew(排放)PAHs into the air and lungs, Perera’s team focused on nonsmokers. The researchers wanted to probe(探查)other sources of PAHs, ones that’s would have been hard for an individual to avoid. The team started by testing the blood of each woman during pregnancy. The reason Any PAHs in a woman’s blood would also be available to the baby in her womb. Nine years later, the researchers investigated signs of attention problems in those children, now age 9. They asked each child’s mother a series of questions. These included whatever her child had problems doing things that needed sustained(长期的)mental effort, such as homework or games with friends. The scientists also asked if the kids had trouble following instructions or made frequent, careless mistakes. All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD. About one in U.S. children has ADHD. Among the women studied, traffic and home heating were the primary sources of air pollution exposure, Perera and her team suspect. Some of these women had low levels of PAHs in their blood. Ohters had high levels. Those with high levels were five times as likely to have children who showed attention problems by age 9. The new findings were published November 5 in the journal PLOS ONE. Perera and her team chose nonsmoking pregnant women all over America.

A.Right
B.Wrong
C.Not mentioned

49.Saving a City’s Public Art Avoiding traffic jams in Los Angeles may be impossible, but the city’s colorful freeway murals(壁画)can brighten even the worst commute. Paintings that depict(描述)famous people and historical scenes cover office buildings and freeway walls all across the city. With a collection of more than 2,000 murals, Los Angeles is the unofficial mural capital of the world. But the combination of graffiti(涂鸦), pollution, and hot sun has left many L.A. murals in terrible condition._____(46)In the past, experts say, little attention was given to caring for public art. Artists were even expected to maintain their own works, not an easy task with cars racing by along the freeway. _____(47)The work started in 2003. So far, 16 walls have been selected, and more may be added later. Until about 1960, public murals in Los Angeles were rare. But in the 1960s and 1970s, young L.A. artists began to study early 20th-century Mexican mural painting._____(48) The most famous mural in the city is Judith Baca’s "The Great Wall," a 13-foot-high(4-meter-high)painting that runs for half a mile (0.8 kilometer) in North Hollywood,_____(49)it took eight years to complete—400 underprivileged teenagers painted the designs—and is probably the longest mural in the world. One of the murals that will be restored now is Kent Twitchell’s "Seventh Street Altarpiece." which he painted for the Los Angeles Olympics in 1984._____ (50)Twitchell said, "It was meant as a kind of gateway through which the traveler to L.A. must drive. The open hands represent peace." Artists often call murals the people’s art. Along a busy freeway or hidden in a quiet neighborhood, murals can reach people who would never pay money to see fine art in a museum, "Murals give a voice to the silent majority," said one artist. 46().

A.The city trying to stop the spread of graffiti, has painted over some of the murals complete.
B.This striking work depicts two people facing each other on opposite sides of the freeway near downtown Los Angeles.
C.Artists like murals because they like the work of Mexican artists.
D.Now the city is beginning a huge project to restore the city’s murals.
E.The mural represents the history of ethnic groups in California.
F.Soon, their murals became a symbol of the city’s cultural expressions and a showcase for L.A.’s cultural diversity.

50.Why Buy Shade-Grown Coffee When people argue about whether coffee is good for health, they’re usually thinking of the health of the coffee drinker. Is it food for your heart Does it increase blood pressure Does it help you concentrate However, coffee affects the health of the human population in other ways, too. Traditionally, coffee bushes were planted under the canopy(树冠)of taller indigenous(土生土长的)trees. However, more and more farmers in Latin America are deforesting the land to grow full-sun coffees. At first, this increases production because more coffee bushes can be planted if there aren’t any trees. With increased production come increased profits. Unfortunately, deforesting for coffee production immediately decreases local-wildlife habitat. Native birds nest and hide from predators(捕食者)in the tall trees and migrating birds rest there. Furthermore, in the long term, the full-sun method also damages the ecosystem because more chemical fertilizers and pesticides are needed to grow the coffee. The fertilizers and pesticides kill insects that eat coffee plant, but then the birds eat the poisoned insects and also die. The chemicals kill or sicken other animals as well, and can even enter the water that people will eventually drink. Fortunately, farmers in Central and South America are beginning to grow more coffee bushes in the shade. We can support these farmers by buying coffee with such labels as "shade grown" and "bird friendly." Sure, these varieties might cost a little more. But we’re paying for the health of the birds, the land, ourselves, and the planet. I think it’s worth it. What is the main idea of this passage

A.Farmers are changing the way they grow coffee.
B.Coffee is becoming more expensive to produce.
C.Shade-grow coffee is more expensive than sun-grow coffee.
D.People should buy shade-grown coffee.

试卷来源:易哈佛

总分:100分

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