[外语类试卷]大学英语六级模拟试卷607及答案与解析.doc

1、大学英语六级模拟试卷 607及答案与解析 一、 Part I Writing (30 minutes) 1 For this part, you are allowed 30 minutes to write a composition on the topic: On college Students Renting Houses off Campus. You should write at least 150 words following the outline given below in Chinese: 1. 眼下大学生在外租房居住的现象十分普遍 2. 对比分析在外租房居住和在学

2、校座的利弊 3. 我的看法 On college Students Renting Houses off Campus 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) i

3、f the statement agrees with the information given in the 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 Has a Runaway Greenhouse Effect Begun? (Adapted) By Norm Dixon Urgent Action for Govern

4、ments In recent weeks, scientists have released two separate findings that indicate the consequences of global warming due to the emission of “greenhouse gases“ primarily carbon dioxide (CO2) from the industrial burning of fossil fuels may be far greater than previously estimated. The new findings s

5、tress the need for governments around the world, in particular the industrialized First World countries that are responsible for more than 80% of past emissions and 75% currently, to take urgent action to massively reduce the worlds industrial greenhouse gas emissions by 60-80%. Rajendra Pachauri, c

6、hairperson of the United Nations Intergovernmental Panel on Climate Change (IPCC), which pools the expertise of more than 2,000 of the worlds climate scientists, warned on October 25 that the greenhouse gas emission reduction targets established in the 1997 Kyoto agreement do not go far enough and f

7、ar more radical solutions must be found. Pachauri welcomed the Russian parliaments October 22 approval of the Kyoto agreement, which will allow the treaty to come into legal force despite the refusal by the worlds major polluter, the United States, to sign. However, “this mustnt deceive us into thin

8、king that the problem is solved“, Pachauri told Reuters(路透社 ). “Kyoto is not enough. We have to look at the problem afresh. “The Kyoto treaty aims for a reduction in greenhouse gas emissions of around 5% of 1990 levels, far short o the 60-800/oo over the next 50 years necessary to arrest global warm

9、ing. CO2 Accumulation Increasing The new evidence on the pace of global warming suggests that world governments may have even less time to act than previously estimated. The October 11 British Guardian(英国卫报 ) reported that CO2 in the atmosphere is at record levels and increasing at an accelerating r

10、ate, while the September 23 edition of Science revealed that glaciers in western Antarctica flowing into the sea are speeding up, indicating an increased level of melting. The scientists who make up the IPCC estimate that unless levels of greenhouse gases in the atmosphere are stabilized by mid-cent

11、ury, Earths average temperature will rise by up to 5.8C by 2100. According to the IPCC figures, if unchecked, CO2 levels in the air will be between 650 and 970 parts per million (ppm). However, these estimates may be too conservative. According to the October 11 Guardian, measurements of average atm

12、ospheric CO2 levels in 2002 and 2003 may confirm that the rate of CO2 accumulation is now increasing at an alarming rate. Scientists at Hawaiis Mauna Loa Observatory(气象台 ) reported that average CO2 levels increased by 2.08 ppm in 2002, to 373.1 ppm, and in 2003, to an average of 375.64 ppm. This is

13、the first recorded example of the average CO2 level jumping more than 2 ppm in two successive years. The average increase in the CO2 level over the last few decades, reports the Guardian, has been 1.5 ppm. The current level of CO2 is the highest in at least 420,000 years! Associated Press (美联社 ) rep

14、orted earlier this year, on March 20, that scientists at Mauna Loa Observatory had recorded the CO2 level in the atmosphere peaking at a record of 379 ppm, compared to 376 ppm a year earlier and 373 ppm in 2002. Global Warming The increase has implied a “runaway“ greenhouse effect already underway.

15、Previous increases of CO2 levels of above 2 ppm1973, 1988, 1994 and 1998have coincided with the El Nino(厄尔尼诺现象 ) weather pattern in the Pacific. However, this cannot explain the latest rises. Weather scientist Charles Keeling, who began measuring atmospheric CO2 at Mauna Loa in 1958, told the Guardi

16、an that “it is possible that this is merely a reflection of natural events like previous peaks in the rate, but it is also possible that it is the beginning of a natural process unprecedented in the record. The rise could be a weakening of the Earths carbon sinks, associated with world warming, as p

17、art of a climate change feedback mechanism. It is cause for concern.“ Piers Forster, senior research fellow at the University of Readings department of meteorology, added that “if this is a rate change, it will be of enormous concern, because it will imply that all our global warming predictions for

18、 the hundred years or so will have to be redone“. Friends of the Earths Scotland head Duncan McLaren, speaking to Agence France Press(法新社 ) on October 11, demanded action to achieve the 60-80% reductions in industrial greenhouse gas emissions required within 30 years: “Instead of just keeping our fi

19、ngers crossed, these findings should send an urgent reminder to governments everywhere of the urgent need to tackle the growing threat of climate change.“ The Rise of Sea Level Predictions about the rate of CO2 accumulating in the atmosphere might not be the only estimates that have to be revised. B

20、ased on the IPCCs present forecasts, global warming triggered by unchecked greenhouse gas emissions will cause a sea level rise of between 20 centimeters and almost 1 meter by the end of the century. However, the IPCCs prediction is based on an assumption that the polar ice caps will not melt signif

21、icantly. Glaciers into Oceans However, according to the September 23 journal Science, NASA researchers have found that six vast glaciers in the west Antarctic are flowing into the Amundsen Sea at a rate up to 25% faster than in the 1970s. The Pine Island Glacier is entering the ocean at a rate of si

22、x meters a day and as more enters the sea, the remainder speeds up further. Glaciologists(冰河学家 ) told Science that within five years, 700 square kilometers of the thick Pine Island Glacier alone will be floating (and melting) in the ocean. According to Eric Rignot, a glaciologist at NASAs Jet Propul

23、sion Laboratory (喷气推进实验定 ), should the six glaciers completely melt, they alone will cause the worlds sea level to rise by more than a meter. Researchers using ice-penetrating radar also found that the glaciers are on average 430 meters thicker than previously thought, meaning they are dumping consi

24、derably more fresh water into the ocean. One reason why Antarctic glaciers are entering the sea at a much faster rate is because floating 500- metre ice shelves, which significantly slow the entry of the glaciers into the sea, have begun to collapse and melt. Antarctica has warmed by an average 2.5

25、since the 1940s, and winter temperatures have jumped by almost 5 . The Larsen A ice shelf suddenly collapsed in 1995. The Wilkins Ice Shelf is shrinking. In 2002, the 3400-square kilometer Larsen B shelfat least 12,000 years old and up to 70 stories thickdisintegrated into the Weddell Sea in the spa

26、ce of a few months. The break of monster icebergs is now common. Ted Scamhos, an expert from the University of Colorados National Snow and Ice Centre, found that after Larsen Bs collapse, nearby glaciers began entering the sea up to eight times faster than previously. According to NASAs Robert Thoma

27、s, the ice shelves are melting rapidly and have been thinning at the rate of 10 to 15 metres a year since the 1990s. The rate of thinning today is double that in the 1990s, he added. The Larsen and Wilkins ice shelves are relatively insignificant in Antarctic terms, but their decrease may indicate t

28、hat similar processes may be underway on the massive Ross and the Filchner-Ronne ice shelves. “Ice-shelf thinning could be happening elsewhere in the Antarctic, but we just dont know“, Scambos told Science. The Ross and the Filchner Ronne ice shelves prevent the gigantic land-based Western Antarctic

29、 Ice Sheet from rapidly entering the ocean and melting. The Western Antarctic Ice Sheet, the smaller of Antarcticas two vast ice sheets, contains an incredible 3.2 million cubic kilometers of ice, about 10% of the worlds total ice enough to raise the sea level six meters. (If the more secure Eastern

30、 Antarctic Ice Sheet melted, the sea would rise more than 60 meters! ) Within the western sheet are five ice streams enormous glaciers more than 50 kilometers wide and one kilometer thick. The Ross Ice Shelffloating ice nearly the size of New South Wales-and the similarly sized Filchner-Ronne Ice Sh

31、elf prevent them sliding into the sea where they would rapidly melt. The West Antarctic Ice Sheet may have melted at least once before, between 110,000 and 130,000 years ago, causing the sea level to rise about five meters higher than todays lev61. An article in the August 1995 Scientific American p

32、ointed out that the five-meter rise was followed by a 10-metre decreaseall in the space of 100 or so years! The May 2002 edition of Science reported that researchers from the Oregon State University, the University of Toronto and the University of Durham in Britain had found that a massive and unusu

33、ally abrupt 23-metre rise in the sea level about 14,200 years ago was caused by the partial collapse of both major ice sheets in Antarctica. The sea level took just 500 years to reach that height. 2 The industrialized First World countries should take the main responsibility for the emission of CO （

34、 A） Y （ B） N （ C） NG 3 Kyoto agreement is accepted by most of the worlds major polluters of countries. （ A） Y （ B） N （ C） NG 4 An international organization should be legally built to prevent countries from emitting greenhouse gases. （ A） Y （ B） N （ C） NG 5 The October 11 Guardian claimed that the r

35、ate of CO2 accumulation was increasing at an alarming rate in 2002 and 200 （ A） Y （ B） N （ C） NG 6 According to the scientists it is the emission of CO(2 by human beings that causes the increases of CO2 levels. （ A） Y （ B） N （ C） NG 7 The glaciers have been entering oceans at a higher rate than befo

36、re. （ A） Y （ B） N （ C） NG 8 According to the scientists at Hawaiis Mauna Loa Observatory, the average CO2 levels increased by _in 200 9 The sea level rise is mainly caused by_ triggered by unchecked greenhouse gas emissions. 10 The Pine Island Glacier is entering the ocean at a rate of_. 11 Glaciers

37、 are much thicker than previously thought, which means _into the ocean. 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 questio

38、ns 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） The mans car broke down this morning. （ B） The man was punched in his car this morning. （ C） The man drove his car

39、to work this morning. （ D） The man rode the bicycle to work and was late today. （ A） They are dining in an Italian cafeteria. （ B） The woman successfully lost some weight on diet. （ C） The woman effectively lost some weight during sickness. （ D） The woman is interested in Italian food. （ A） The sell

40、er on line is cheating the women. （ B） Maybe theres something wrong with the transportation. （ C） The dress is on transportation right now. （ D） The transportation system will blame the seller for the mistake. （ A） The woman could not hear the man out of office. （ B） The woman is going to stay up al

41、l night to wait for the man. （ C） The man isnt coming back tonight. （ D） The mans phone has almost run out of battery. （ A） The police down the cars number. （ B） He didnt take down the cars number. （ C） The police didnt find the car. （ D） He was badly injured by the car. （ A） The temperature in the

42、mans city has come up to 39 degree. （ B） The man has a serious heart problem. （ C） The man is calling to cancel the hotel reservation. （ D） The man is going to the hotel for a rest. （ A） She has bought a very expensive dress. （ B） She is talking proudly about her new dress. （ C） She is talkative abo

43、ut other peoples business. （ D） She does not talk to the woman. （ A） The SPA health club charges high prices. （ B） The woman is divorcing with her husband. （ C） The woman spent half of her husbands salary for the SPA experience. （ D） The woman has no idea about the SPA club. （ A） Teacher and student

44、. （ B） Mother and son. （ C） Classmates. （ D） Brother and sister （ A） Warm-hearted, self-disciplined, patient. （ B） Hot-tempered, diligent, kind. （ C） Easy-going, warm-hearted, stubborn. （ D） Self-centered, hard-working, considerate. （ A） He spends much school time playing computer games. （ B） He oft

45、en dozes off in class. （ C） He doesnt take the assignments seriously. （ D） He plays computer games because the textbooks are dull and lectures are boring. （ A） Specific paycheck. （ B） Sense of accomplishment. （ C） Chances of promotion. （ D） Awards she deserves. （ A） List her greatest strengths and w

46、eaknesses. （ B） Say something about her likes and dislikes. （ C） Write a brief report to her department manager. （ D） Justify her choice for joining a small and young firm. （ A） Talking about her dislike of any subject. （ B） Regretting not getting along with her partners. （ C） Telling lies about her

47、 ability and disgrace. （ D） Making reference to her former employers. （ A） That will ensure her success in the speech contest. （ B） That will earn her additional scores in the exam. （ C） That will convey her interest in the host company. （ D） That will influence her superiors decision of award. Sect

48、ion 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 choices marked A, B, C and D. （ A） A gove

49、rnment document. （ B） A literary work. （ C） A social art. （ D） An individuals creation. （ A） Because they were not easily burned and can last long. （ B） Because they were very cheap materials. （ C） Because they could be found here and there. （ D） Because they could add artistic value to buildings. （ A） Architecture and Literature. （ B） Development of Architecture. （ C） Classification of Architecture. （ D） Materials of Architecture. （ A） Fire prevention. （ B） Pest control. （ C） House construct