公共英语四级-425及答案解析.doc

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1、公共英语四级-425 及答案解析(总分：100.00，做题时间：90 分钟)一、Section Listening (总题数：0，分数：0.00)二、Part A(总题数：1，分数：5.00)(1)._ make it possible for astronauts to reach the moon.（分数：1.00）填空项 1:_(2).Rockets first used in war in _.（分数：1.00）填空项 1:_(3)._ discovered liquid fuel as a fuel for rockets.（分数：1.00）填空项 1:_(4).The first

2、liquid-fuelled rocket can fly _.（分数：1.00）填空项 1:_(5).The passage is mainly about _.（分数：1.00）填空项 1:_三、Part B(总题数：1，分数：5.00)(1).How many famous explorers are mentioned in this passage? Who are they?（分数：1.00）填空项 1:_(2).What did Richard Byrd do to become a famous explorer?（分数：1.00）填空项 1:_(3).Who sent unm

3、anned spacecrafts to the moon in the 1950s and 1960s?（分数：1.00）填空项 1:_(4).When did the first manned spacecraft leave earth for the moon?（分数：1.00）填空项 1:_(5).What are the planets man might visit someday?（分数：1.00）填空项 1:_四、Part C(总题数：0，分数：0.00)五、Questions 11-13 are (总题数：1，分数：3.00)A.Deer are vegetarians.B

4、.Deer are carnivores.C.Deer eat raw foods only.D.Deer are both vegetarians and carnivores.A.Small plants.B.Small animals.C.A kind of fish.D.A kind of flower.A.In 1926.B.In 1826.C.In 1962.D.In 1862.六、Questions 14-16 are (总题数：1，分数：3.00)A.At the age of 7.B.At the age of 8.C.At the age of 9.D.At the age

5、 of 18.A.He receives the instruction from computers.B.He receives the instruction form human beings.C.He can judge the meaning from the ambiguous words.D.He can tolerate the interactions of human beings.A.Their health is going to be developed.B.They are going to develop the machine standard.C.They w

6、ill no linger be computer-obsessed kids.D.They are going to gain a close access to human emotion.七、Questions 17-20 are (总题数：1，分数：4.00)A.You consider that you owe somebody a letter.B.You consider that letters are gifts.C.You consider that writing letters makes you feel cheerful.D.You should feel sham

7、ed that you haven t answered a letter.A.When you make friends.B.When you receive a gift.C.When you want to visit your friends.D.When you havent answered a letter for a long time.A.Write letters carefully.B.Write letters promptly.C.Write letters with a lot of information.D.Write letters with a proper

8、 style.A.Clarity.B.Dramatic effect.C.Information.D.Grammar and style.八、Section Use of Eng(总题数：0，分数：0.00)九、An 80-year-old man f(总题数：20，分数：20.00)1.（分数：1.00）A.donatedB.chargedC.lentD.spared2.（分数：1.00）A.deadB.neglectedC.aliveD.revived3.（分数：1.00）A.peacefulB.unconsciousC.painfulD.harmless4.（分数：1.00）A.simi

9、larB.criticalC.seriousD.crucial5.（分数：1.00）A.conditionB.verdictC.preferenceD.wishes6.（分数：1.00）A.had had toB.had toC.has had toD.has to7.（分数：1.00）A.dislikesB.provesC.supportsD.disputes8.（分数：1.00）A.subsequenceB.influenceC.punishmentD.consequence9.（分数：1.00）A.struggleB.surviveC.stayD.endure10.（分数：1.00）A.

10、quicklyB.naturallyC.peacefullyD.comfortably11.（分数：1.00）A.not tryB.tryC.not to tryD.to try12.（分数：1.00）A.destroyedB.disintegratedC.dismemberedD.damaged13.（分数：1.00）A.sawB.knewC.admittedD.nursed14.（分数：1.00）A.heartB.liverC.brainD.nerves15.（分数：1.00）A.exceptB.butC.andD.instead16.（分数：1.00）A.systemB.shockC.d

11、eviceD.operation17.（分数：1.00）A.paralysedB.authenticateC.intoxicatedD.deliberate18.（分数：1.00）A.emergencyB.urgencyC.crucialD.immediacy19.（分数：1.00）A.caughtB.sufferedC.passedD.avoided20.（分数：1.00）A.littleB.muchC.someD.such十、Section Reading Co(总题数：0，分数：0.00)十一、Part A(总题数：0，分数：0.00)十二、Text 1(总题数：0，分数：0.00)十三

12、、The destruction of o(总题数：5，分数：5.00)21.The word “tunnel-visioned“ (Line 2, Par（分数：1.00）A.4) most probably means“ _ “.A. narrow-mindedB. blind to the factsC. short-sightedD. able to see only one aspect22.We can infer from the first two paragraphs that the industrialists disregard environmental protec

13、tion chiefly because _.（分数：1.00）A.they are unaware of the consequences of what they are doingB.they are reluctant to sacrifice their own economic interestsC.time has not yet come for them to put due emphasis on itD.it is difficult for them to take effective measures23.The main task now facing ecolog

14、ists, environmental activists and conservationists is _.（分数：1.00）A.to prevent pollution by legislation, economic incentives and persuasionB.to arouse public awareness of the importance of environmental protectionC.to take radical measures to control environmental pollutionD.to improve the quality of

15、 life by enforcing environmental standards24.Which of the following is true according to the last paragraph?（分数：1.00）A.Efforts should be exerted on pollution prevention instead of on remedial measures.B.More money should be spent in order to stop pollution.C.Ordinary citizens have no access to techn

16、ical information on pollution.D.Environmental degradation will be stopped by the end of this decade.25.Which of the following, according to the author, should play the leading role in the solution of environmental problems?（分数：1.00）A.Legislation and government intervention.B.The industrys understand

17、ing and support.C.The efforts of environmental health professionals.D.The cooperation of ecologists, environmental activists and conservationists.十四、Text 2(总题数：0，分数：0.00)十五、In the 1950s, the pi(总题数：5，分数：5.00)26.Which of the following is closest in meaning to the phrase the only game in town“(Line 3,

18、 Par（分数：1.00）A.4) ?A. The only approach to building an artificially intelligent computer.B. The only way for them to win a prize in artificial intelligence research.C. The only area worth studying in computer science.D. The only game they would like to play in town.27.Whats the authors opinion about

19、 the new AI movement?（分数：1.00）A.It has created a sensation among artificial intelligence researchers bu will soon die out.B.Its a breakthrough in duplicating human thought processed.C.Its more like a peculiar game rather than a real scientific effort.D.It may prove to be in the right direction thoug

20、h nobody is sure of its future prospects.28.Conrad and his group of AI researchers have been making enormous efforts to _.（分数：1.00）A.find a roundabout way to design powerful computersB.build a computer using a clever network of switchesC.find out how intelligence developed in natureD.separate the hi

21、ghest and most abstract levels of thought29.The new trend in artificial intelligence research stems from _.（分数：1.00）A.the shift of the focus of study on to the recognition of the shapes of objectsB.the belief that human intelligence cannot be duplicated with logical, step-by-step programsC.the aspir

22、ations of scientists to duplicate the intelligence of a ten-month-old childD.the efforts made by scientists in the study of the similarities between transistors and brain cells30.The author says that the powerful computers of today _.（分数：1.00）A.are capable of reliably recognizing the shape of an obj

23、ectB.are close to exhibiting humanlike behaviorC.are not very different in their performance from those of the 50sD.still cannot communicate with people in a human language十六、Text 3(总题数：0，分数：0.00)十七、Theres simple premi(总题数：5，分数：5.00)31.To produce artificial noses for practical use, it is essential _

24、.（分数：1.00）A.to develop microchips with thousands of odor receptorsB.to invent chips sensitive to various chemicalsC.to design a computer program to sort out smellsD.to find chemicals that can alter the electrical current passing through32.The word “logged“ (Line 5, Par（分数：1.00）A.6) most probably mea

25、ns “_ “.A. presetB. enteredC. processedD. simulated33.Which of the following is within the capacity of the artificial nose being developed?（分数：1.00）A.Performing physical examinations.B.Locating places which attract terrorists.C.Detecting drugs and water contamination.D.Monitoring food processing.34.

26、The authors attitude towards Larry Myers work is _.（分数：1.00）A.cautiousB.approvingC.suspiciousD.overenthusiastic35.A potential problem which might be caused by the use of an artificial nose is _.（分数：1.00）A.negligence of public safetyB.an abuse of personal freedomC.a hazard to physical healthD.a threa

27、t to individual privacy十八、Text 4(总题数：0，分数：0.00)十九、In the 1920s demand (总题数：5，分数：5.00)36.The chief concern of the American government in the area of agriculture in the 1920s was_.（分数：1.00）A.to increase farm productionB.to establish agricultural lawsC.to prevent farmers from going bankruptD.to promote

28、 the mechanization of agriculture37.It was claimed that the new laws passed during the Roosevelt Administration were aimed at _.（分数：1.00）A.reducing the cost of farmingB.conserving soil in the long-term interest of the nationC.lowering the burden f farmersD.helping farmers without shifting the burden

29、 onto other taxpayers38.The Agricultural Adjustment Act encouraged American farmers to _.（分数：1.00）A.reduce their scale of productionB.make full use of their landC.adjust the prices of their farm productsD.be self-sufficient in agricultural production39.What brought about the decline in the demand fo

30、r American farm products?（分数：1.00）A.The impact of the Great Depression.B.The shrinking of overseas markets.C.The destruction caused by the First World War.D.The increased exports of European countries.40.The Supreme Court rejected the Agricultural Adjustment Act because it believed that the Act _.（分

31、数：1.00）A.might cause greater scarcity of farm productsB.didn t give the Secretary of Agriculture enough powerC.would benefit neither the government not the farmersD.benefited one group of citizens at the expense of others二十、Part B(总题数：0，分数：0.00)二十一、Black holes(总题数：5，分数：15.00)41.（分数：3.00）_42.（分数：3.00

32、）_43.（分数：3.00）_44.（分数：3.00）_45.（分数：3.00）_二十二、Section Writing(总题数：1，分数：25.00)46.Outline：Your essay should be based on the information given below乘飞机旅行有许多长处(方便、快捷、省时、舒适等)。空中旅行也有许多不足之处(机票价格贵，有的旅客不适应空中旅行，常常感到身体不适，甚至有人还担心发生空难)。请你简单阐述上述两个方面。最后请你说明你的看法。（分数：25.00）_公共英语四级-425 答案解析(总分：100.00，做题时间：90 分钟)一、Sect

33、ion Listening (总题数：0，分数：0.00)二、Part A(总题数：1，分数：5.00)(1)._ make it possible for astronauts to reach the moon.（分数：1.00）填空项 1:_ （正确答案：Rockets）解析：听力原文Questions-The astronauts could not have reached the moon without the invention of rockets. We live in the age of rockets, but do you know that rockets are

34、 not a modem invention? For centuries, rockets were used to entertain people. The Chinese used rockets for fireworks. In the 13th certury, rockets were first used in war. The Mongols used rockets to attack a Chinese city in 1232. These early rockets could not travel very far. However, in 1885 a Russ

35、ian scientist discovered a better fuel for rockets. This liquid fuel gave rockets much more power. Then in 1919 a new age of rockets began. In that year an American scientist, Robert Goddard, said that it was possible to send a rocket to the moon! Goddard launched his first liquid-fuelled rocket in

36、1923. It flew 184 feet. Al most 12 years later, he sent a rocket 7,500 feet into the air in 1935. Russian rockets sent the first satellite into orbit in 1957. Just 12 years later the first man walked on the moon thanks to rockets! Where will rockets take us next?(2).Rockets first used in war in _.（分

37、数：1.00）填空项 1:_ （正确答案：1232）解析：(3)._ discovered liquid fuel as a fuel for rockets.（分数：1.00）填空项 1:_ （正确答案：A Russian scientist）解析：(4).The first liquid-fuelled rocket can fly _.（分数：1.00）填空项 1:_ （正确答案：184 feet）解析：(5).The passage is mainly about _.（分数：1.00）填空项 1:_ （正确答案：The Development of Rockets）解析：三、Part

38、 B(总题数：1，分数：5.00)(1).How many famous explorers are mentioned in this passage? Who are they?（分数：1.00）填空项 1:_ （正确答案：Three: Marco Polo, Christopher Columbus and Richard Byrd.）解析：听力原文Qustions-Through history there have been many great explorers. Have you, for example, heard of Mar co Polo, the famous It

39、alian traveller? He was one of the first Europeans to travel to China. He arrived in China in the late 13th century. About 200 years later Christopher Columbus sailed from Spain by ship. He was looking for a new way to reach India. However, as you probably know, he did not reach India. He landed in

40、America. Five hundred years after Columbus, in the 1930s, a famous explorer named Richard Byrd was one of the first persons to fly over both the North and the South Poles.Today we continue to explore this world, and are starting to explore other worlds, too. In the late 1950s and the 1960s Russian a

41、nd American scientists sent many unmanned spacecrafts to the moon. These spacecrafts sent back valuable information about the moon. Then on July 16,1969, the first manned spaceship to the moon left earth. On that day Apollo 11 blasted off with three American astronauts on board. Four days after blas

42、t-off, two of the astronauts landed on the moon. They then explored the surface of the moon. About two days after landing on the moon, they started back to earth. They arrived safely back to earth a few days later.Today we are sending unmanned spacecrafts to other planets. In the future we might wal

43、k in Mars or Venus the way we did on the moon. We might even travel to other galaxies! Who knows? One thing we know for sure is that we will continue to explore this world and other worlds, too.(2).What did Richard Byrd do to become a famous explorer?（分数：1.00）填空项 1:_ （正确答案：He flew over both the Nort

44、h and the South Poles in the 1930s.）解析：(3).Who sent unmanned spacecrafts to the moon in the 1950s and 1960s?（分数：1.00）填空项 1:_ （正确答案：Russian and American scientists.）解析：(4).When did the first manned spacecraft leave earth for the moon?（分数：1.00）填空项 1:_ （正确答案：On July 16,1969.）解析：(5).What are the planets

45、 man might visit someday?（分数：1.00）填空项 1:_ （正确答案：Mars and Venus.）解析：四、Part C(总题数：0，分数：0.00)五、Questions 11-13 are (总题数：1，分数：3.00)A.Deer are vegetarians. B.Deer are carnivores.C.Deer eat raw foods only.D.Deer are both vegetarians and carnivores.解析：听力原文 Questions -Deer are confirmed vegetarians. But you

46、 would never know it by watching the white-tailed deer an island in Lake Michigan each spring. In the first documented case Of its kind, two wildlife biologists, writing in a journal, report that deer have been gulping down a kind of small fish, which die off each spring and summer, washed up on the beach.It is reported that the average deer ate 235 fish during each of three daily trips to the beach.The white-tailed deer were introduced to an island in late 1926. Th