[外语类试卷]大学英语六级模拟试卷408及答案与解析.doc

1、大学英语六级模拟试卷 408及答案与解析 一、 Part I Writing (30 minutes) 1 Directions: For this part, you are allowed 30 minutes to write a composition on the topic How to Be Successful in the Future Job. You should write at least 150 words following the outline given below in Chinese: 1. 影响将来事业成功的因素有很多，试举例说明 2你对此的看法，并阐

2、述理由 二、 Part II Reading Comprehension (Skimming and Scanning) (15 minutes) Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions attached to the passage. For questions 1-4, mark： Y (for YES) if the statement agrees with the information given in the

3、 passage; N (for NO) if the statement contradicts the information given in the passage; NG (for NOT GIVEN) if the information is not given in the passage. 1 Part Reading Comprehension (Skimming and Scanning) Directions: In this part, you will have 15 minutes to go over the passage quickly and answer

4、 the questions on Answer Sheet 1. For questions 1 - 7, choose the best answer from the four choices marked A), B), C) and D). For questions 8- 10, complete the sentences with the information given in the passage. Happy Earth Day The Good News Heres the good news: our air is cleaner, our lakes are pu

5、rer, our forests are healthier, endangered species are recovering, toxic emissions are down, and acid rain has diminished dramatically. And yet, if youve looked at a newspaper or watched the evening news lately, you might think our environment is under siege(围攻 ). Media coverage of the environment i

6、s heavy on doomsday, but the truth is not at all break: nearly all environmental trends in the United States are positive and have been for years-if net decades. Eco-legislation, green organizations, corporate cooperation and new inventions have all quietly steered our environment in a positive dire

7、ction. We cant afford to be complacent(自满的 ), though-especially when it comes to greenhouse gases, since global warming is the one huge problem we havent really tackled. But almost every measure taken by government agencies and grass-roots efforts tn improve the environment has shown encouraging res

8、ults-usually faster than expected and at a lower cost. Now thats good news. Scientists and environmentalists think that even the worrisome fact of global warming can be ameliorated(改善 ). There is a strong scientific consensus that the global warming threat requires action, but if current environment

9、al trends persist and the reduction of most pollutants continues to be accomplished faster and more cheaply than expected, we may be able to control and reduce greenhouse gases in both affordable and practical ways. Consider some of the environmental improvements the United States has witnessed over

10、 the last three decades. Improved Air Quality Take a nice, big cleansing breath. According to the Environmental Protection Agency, emissions of the primary smog-causing chemicals from cars and trucks have declined 54 percent since 1970, even though the number of registered cars and trucks has more t

11、han doubled, from 108,407,000 to 230,428,000, and they are now driven one and a half times as far annually. Keep breathing, because the fine particulates linked to respiratory disease, including those sometimes seen as soot(煤烟 ), are down by about one-third since 1979 (though fewer cities were surve

12、yed back then). The level of carbon monoxide, a dangerous odorless gas, is down 53 percent since 1970. And emissions of sulfur dioxide, often the major culprit behind acid rain, are down 49 percent since 1970, despite the fact that the United States now bums far more coal, the main source of this po

13、llutant. These improvements have translated into better air quality for millions of Americans. Between 1976 and 1990, the Los Angeles area averaged some 150 days per year in violation of federal smog standards; in 2004, that figure dropped to just 27 violation days, the fewest ever for that city. An

14、d, in case you are wondering, federal standards have become stricter; not weaker, during this period. Of course, there is more to be done-27 smog days in Los Angeles are still 27 too many, and Atlanta, Houston and other cities continue to experience air-pollution problems. But overall, air-quality t

15、rends are strongly positive. Now, exhale. Better Water Quality Other environmental trends are equally encouraging. Water quality has improved, too, and rates of waterborne disease are also in decline. Its hard to believe, but just a generation ago, factories and municipal plants actually discharged

16、untreated wastewater directly into rivers; today, though some raw sewage often makes it to waterways, almost all wastewater in the United States is treated before discharge. Even our largest metropolises have seen dramatic changes in their waterways. Remember when the filthy condition of Boston Harb

17、or became a contentions issue in the 1988 presidential campaign? Today, Boston Harbor is sparkling again. The Potomac River, which in the 1960s literally gave off a stench(恶臭 ), now boasts a thriving waterfront restaurant scone. And the Chicago River, a virtual open sewer in the 1960s, now hosts cha

18、rming dinner cruises. Innovation Goes Green Invention has always been an important force in American history. When major reductions in automobile pollution were first mandated by the Clean Air Act of 1970, automakers either called the goals impossible or claimed that cars would become ruinously expe

19、nsive. Then the catalytic converter was invented. This device reduces the level of many pollutants from automobile exhaust both cheaply and reliably. Today, it is estimated that new cars and light trucks emit just 3 to 4 percent of the amount of pollution that a new car would have emitted in 1968, b

20、efore regulation; soon cars emitting less than I percent could be seen driving around your neighborhood. Other inventions, such as an enormous device known as the electrostatic precipitator, have reduced severe emissions from power-plant smokestacks, eliminated toxic substances from manufacturing pr

21、ocesses, and replaced CFCs, the chemicals that cause ozone-layer depletion, with other more benign compounds. And by the way, the ozone layer appears to be restoring itself. Legislation in Action Government regulation has also been an important force in the drive to protect the environment. The reas

22、on the catalytic converter and other antipollution devices were invented in the first place is because the government required big reductions in pollution, via the Clean Air Act, Clean Water Act and other legislation. Some environmental regulation may be too cumbersome(麻烦的 ) and needs to be streamli

23、ned-standards can vary wildly between regions-but there isnt any doubt that environmental regulation actually works. Citizens for Change Individual activism has been another important factor in the amazing progress we have seen in our natural world. Without the continued pressure from environmentali

24、sts, antipollution legislation would not have been enacted, and many pollution-reducing devices would not have been invented. Grass-roots organizations have been particularly essential to the ongoing creation and maintenance of new parks, wildlife refuges and protected forests. Corporations Clean Up

25、 Businesses that once resisted environmental roles now generally comply. When companies started losing lawsuits regarding their chemical omissions, the idea of toxic reduction became rather popular in corporate boardrooms. But many corporations today seem to have genuinely come to believe that envir

26、onmental protection is good for the country, good for the economy and, therefore, good for business. Getting a head start on the future, several big manufacturers, such as Alcoa, Boeing and Whirlpool, have already taken steps to reduce their companies greenhouse gas emissions. Alcoa, for example, ha

27、s initiated a plan to use improved technology to reduce its greenhouse gas emissions 25 percent by 2010. The company also has extensive tree-planting programs near many of its operations and service areas, and Alcoa helps fund environmental nonprofits. Boeing and Whirlpool, meanwhile, are working to

28、 meet emissions reduction targets even though, no federal law yet requires this. Business leaders, environmentalists, regulators and inventors are working toward the same goal. Thats certainly an odd mix-not clearly Republican or Democratic, not clearly left-wing or right-wing. And maybe thats the b

29、iggest reason you rarely hear about environmental progress. Current trends do not fit any preconceived (预想的 ) ideological notions. The political left wants to believe that industry is destroying the planet, and refuses to consider the evidence that business and the environment are making peace. The

30、political right wants to believe that regulations are destroying the country, and refuses to consider the evidence that the longest period of economic expansion in American history occurred during the very period when pollution was in the midst of its big decline. However, todays reality-an improvin

31、g environment without economic does not fit with anyones scare-tactic fund-raising or cheap-shot political campaigns. Miles to Go Do the positive trends mean that environmental protection is no longer a concern? Absolutely not. Many problems remain, among them the loss of wildlife habitat in suburba

32、n expansion areas, chemical runoff from nearly unrestricted agriculture, and low miles-per-gallon SUVs, which cause waste by burning excessive gas. Beyond these setbacks stands the specter (幽灵 ) of artificially triggered climate change. Global warming may be the Super Bowl of environmental problems,

33、 since it could impact all of Earth. But just bear this in mind: in every place where nations have imposed strict environmental standards, negative trends turned to positive very quickly. Earth, after all, has proved throughout the eons(万古 ) to be nothing if not resilient(能复原的 ). This gives us good

34、reason to hope that if we act to solve the environmental problems that still remain, we will achieve rapid progress against them too. Now thats a reason to say Happy Earth Day! 2 What is the one huge problem that we havent really solved? （ A） Global warming. （ B） Acid min. （ C） Toxic emission. （ D）

35、Environment. 3 Scientists and environmentalists think that global warming can be _. （ A） continued （ B） improved （ C） controlled （ D） reduced 4 Which year is the fewest in violation of federal smog standards in Los Angeles? （ A） 1976 （ B） 1979 （ C） 1990 （ D） 2004 5 Which of the following provides di

36、nner cruises now? （ A） The Potomac River （ B） Boston Harbor （ C） The Chicago River （ D） The Mississippi River 6 The electrostatic precipitator has got rid of _ from manufacturing processes. （ A） severe emissions （ B） ozone-layer depletion （ C） many pollutants （ D） toxic substances 7 There is no doub

37、t that environmental regulation _. （ A） is cumbersome （ B） produces an effect （ C） varies wildly （ D） needs to be streamlined 8 Antipollution legislations have been enacted thanks to the continued pressure from _. （ A） grass-roots organizations （ B） individual activism （ C） environmentalists （ D） en

38、vironmental regulation 9 When companies started losing lawsuits regarding their chemical emissions, the idea of toxic reduction became rather popular in _. 10 Boeing and Whirlpool, meanwhile, are working to meet emissions reduction targets even though _. 11 This gives us good reason to hope that if

39、we act to solve the environmental problems that still remain, we will _. Section A Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questi

40、ons will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A, B, C and D, and decide which is the best answer. （ A） $80. （ B） $60. （ C） $90. （ D） $15. （ A） He loves his present work. （ B） He is going to open a store. （ C） He is ab

41、out to retire. （ D） He works in a repair shop. （ A） Mary is going to Hawaii. （ B） Mary has been to many countries. （ C） Mary likes postcards. （ D） Mary is traveling on business. （ A） To save the money for a long time. （ B） To buy a new car. （ C） To purchase a used car. （ D） To get a second car. （ A）

42、 Delivery service manager and driver. （ B） Teacher and student. （ C） Lawyer and client. （ D） Doctor and patient. （ A） New shopping centers are very common. （ B） The shopping center is very old. （ C） The city needs more shopping centers. （ D） The old house should be turned into stores. （ A） They are

43、having a party. （ B） They. are playing the piano. （ C） Someone else is having a party. （ D） Someone else is funny. （ A） She was hurt by the man. （ B） She lost her temper. （ C） She didnt speak to her husband. （ D） She missed the dinner party. （ A） Because its a way of relaxing himself. （ B） Because h

44、a has nothing else to do. （ C） Because sitcom is very funny, （ D） Because watching TV is his favorite activity. （ A） Some interesting commercials. （ B） Some perfect looking woman complained about the tribulations. （ C） Some stupid sitcom. （ D） Some woman went crazy and killed her husband. （ A） Go ou

45、t for dinner. （ B） Watch the documentary with the man. （ C） Go dancing. （ D） Watch a game show. （ A） An alien spacecraft landing. （ B） The impact of a meteorite. （ C） A volcanic eruption. （ D） The blizzard conditions in Alaska. （ A） Seeing a falling round object. （ B） Hearing a bird-like sound. （ C）

46、 Observing a bright light. （ D） Witnessing the impact. （ A） The dinosaurs want extinct. （ B） A number of meteorites crashed into Earth. （ C） Some animal species evolved. （ D） Some plants went extinct. （ A） Discovering new life in space. （ B） Studying meteorites. （ C） Plotting the courses of asteroid

47、s. （ D） Developing radar telescopes. Section B Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four

48、choices marked A, B, C and D. （ A） Because they are too small to understand the rules. （ B） Because they are absent-minded. （ C） Because they dont have much time for it. （ D） Because they are not interested in it. （ A） A camera. （ B） A film. （ C） A photo. （ D） a picture. （ A） Time. （ B） Memory. （ C）

49、 Habit. （ D） Textbook. （ A） Botany is a very ancient learning. （ B） People in the Stone Age knew a lot about plants. （ C） People in the Stone Age knew little about plants. （ D） Pre-industrial societies have little insights about plants. （ A） People who live in Amazon tribes dont think plants are the basis of the food pyramid, （ B） People who live in Amazon tribes dont regard botany as a special branch of knowledge. （ C） People who live in Amazon tribes know all the properties of plains in the jungle. （ D） P