大学四级-904及答案解析.doc

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1、大学四级-904 及答案解析(总分：710.00，做题时间：90 分钟)一、Part Writing(总题数：1，分数：103.00)1.Directions: For this part, you are allowed 30 minutes to write a short essay entitled Students Driving to School. Youd write at least 120 words but no more than 180 words following the outline given below in Chinese:1. 目前有不少大学生开车去上

2、学；2. 人们对此看法不一；3. 我的看法Students Driving to School（分数：103.00）_二、Part Reading Compr(总题数：1，分数：70.00)Our Future in Space: It Has Already Begun!We are all space travelers. But weve stayed close to home until now. One day, we may leave our “mother ship“ Earth to make our home among the stars.A giant, spheri

3、cal“ spaceship“, about 8,000 miles in diameter, is speeding through the solar system right now. It is cruising at an incredible 66,600 miles per hour.Its not a giant, Star Wars mother ship. Its spaceship Earth, the home of over four billion people. This water coated spaceship has been traveling thro

4、ugh the universe for about five billion years. Only within the past 25 years, however, have some of its passengers broken free of Earths gravity.But 25 years from now, many people, including you, might live in an orbiting space station 200 miles above the Earth.Space CitiesScientists have already de

5、signed special space factories. These factories will take advantage of the absence of gravity (zero gravity) to produce everything from life-saving drugs to perfect ball beatings.Other scientists have designed space colonies, complete with farms, schools, and artificial day and night. Hundreds, or e

6、ven thousands, of people will live, work, playeven go to school, far above the Earth.Our conquest of space, of course, has already begun. We have explored part of the Moon, sent robot spaceships onto the surface of Venus and Mars, and aimed space probes past the planets of Jupiter and Saturn.Last Ju

7、ne, one robot ship, Pioneer 10, left our solar system forever. And astronauts from both the Soviet Union and the United States have lived in space stations.The conquest of space, without question, is one of the greatest adventures human beings have ever set out on. But it may be more than a great ad

8、venture. Some scientists think the conquest of space may be a necessity for survival of the human species.We are tearing up more and more of the Earth to get raw materials for industry. And we are polluting the air and water as we manufacture products that we need or want. Almost everything that see

9、ms to make our lives more comfortable, and from electricity to pesticides, uses up or alters a piece of our planets natural environment.Why Go into Space?Yet our solar system is full of resources. The moon is chockfull of valuable metals. So are the asteroids, the small, rocky, planet-like bodies or

10、biting the sun most of them between Mars and Jupiter. These metals, if we can get them, could be used to build factories and space stations. Also, in space, there is no atmosphere to filter out the suns energy. There is plenty of solar energy to be turned into electricity for manufacturing, for crea

11、ting comfortable living conditions.Getting away from Earth has other advantages, too. Modern industry uses many kinds of metal alloys (mixtures of metal that are better for certain purposes than pure metals). Yet some metal alloys either cant be made or are very expensive to make on Earth because of

12、 gravity. For instance, certain metals dont mix well on Earth. But in zero gravity, molten (hot, liquid )metals mix more evenly. This is because there is no gravity to pull the heavier metals down, while the lighter ones float on top.From space, too, we can look down on the Earth and study the atmos

13、phere, its weather, and the effects of air pollution.And because there is no strong gravity to break free from, our future homes away from Earth will be convenient starting points for travel to distant planets.But, while going into space might solve some problems, outer space can also be a dangerous

14、 place. For example, in outer space, we have to protect ourselves from the dangers of ultraviolet light and cosmic rays. Ultraviolet light from the sun can give us bad sunburns right here on Earth. Yet, Earths atmosphere screens out most of that harmful radiation. Cosmic rays are tiny high energy pa

15、rticles from outer space. Again, the Earth shields us from most of them.At Home in Space?But in space, without special protection, we would be exposed to much stronger radiation from ultraviolet light and cosmic rays. Also, in the zero gravity of outer space, our bones will lose calcium and become w

16、eaker. This will be more of a problem the longer people stay out in space. Doctors are looking for a way to keep our bones from losing calcium in outer space. And a small spaceship just might “drive you batty“ after a while. But even on a short trip in outer space, you might not feel as well as youd

17、 like to. Space travel could make you seasick!Yet, these risks wont keep people from going into space. Eventually, an Earth-like environment will be built in space. And they will be populated by people with many different interests: medicine, construction, farming, teaching, mining, and so on.The ne

18、xt hundred years Will be filled with other worldly adventures, exciting scientific discoveries, and danger, as humans leave Earthperhaps forever.Aging in SpaceSuppose a space traveler is moving at a velocity of 186,200 miles per second. For every hour that passes tot him, 30 hours pass on Earth. If

19、he travels for a year in this fashion (having accelerated instantaneously) and then turns around and conies back at this speed (having turned around instantaneously), he will find that while he has seemed to himself to have traveled two years, the men on Earth would claim he had been absent for 30 y

20、ears.Suppose the space traveler had left at the age of 30, leaving behind a twin brother also aged 30. When he returned he would be 32, but his stay-at-home twin brother would be 60. That is why the “clock paradox“, is sometimes called the “twin paradox“.Of course it takes quite a long while to acce

21、lerate to a high speed, and a long while to make a turn and head back again, so conditions arent quite as clear cut as just described.（分数：70.00）(1).The giant, spherical spaceship mentioned in the passage is _.（分数：7.00）A.the outer spaceB.a man-made spaceshipC.the Star Wars mother-shipD.the planet Ear

22、th(2).Some persons have traveled into outer space after conquering _ within the past 25 years.（分数：7.00）A.Earths gravityB.the universeC.outer spaceD.the earth(3).We have explored or sent robot spaceships to the following space except _.（分数：7.00）A.MarsB.JupiterC.VenusD.the moon(4).Why is the conquest

23、of space more than a great adventure?（分数：7.00）A.Because it is full of challenges for human beings.B.Because it is more exciting than any other adventures.C.Because it is the greatest adventure in human history.D.Because it may be necessary for human beings to sin-rive.(5).The moon and the asteroids

24、are alike with respect to their _.（分数：7.00）A.rich and valuable metalsB.comfortable living conditionsC.size and moving waysD.solar energy(6).Why cant ultraviolet light scorch our skin on Earth as seriously as it does in space places?（分数：7.00）A.Because the Earth is far away from those planets radiatin

25、g ultraviolet light.B.Because ultraviolet cant reach the Earth at all.C.Because the Earths atmosphere can make ultraviolet light less harmful.D.Because other space places is near from those planets radiating ultraviolet light.(7).In spite of many risks, scientists will finally build in space suitabl

26、e for humans to live.（分数：7.00）A.an environment without ultraviolet lightB.an Earth-like environmentC.a lot of homesD.an environment with atmosphere(8).The reason some metal alloys cant be made on Earth is that the heavier metals _ together with the lighter ones.（分数：7.00）填空项 1:_(9).In space, there is

27、 no atmosphere to filter out the suns energy. There is plenty of solar energy to be turned into _, for creating comfortable living conditions.（分数：7.00）填空项 1:_(10).According to the author, _ will be caused to a man in gravity-free space.（分数：7.00）填空项 1:_三、Part Listening Com(总题数：0，分数：0.00)四、Section A(总

28、题数：4，分数：105.00)A.They dont sell shirts hereB.The clothes here are very expensive.C.They should wait till the clothes are on sale.D.He knows they have nice shirts there.A.Because there is no other woman there.B.Because she has planned to go to another restaurant.C.Because it will ruin her plan of los

29、ing weight.D.Because she doesnt feel she will have fun there.A.The necessity of contacting Mr. Bush.B.Where they are going to meet Mr. Bush.C.The arrangement of the Wednesday meeting.D.Who is going to contact Mr. Bush.A.He graduates from a drama school.B.He is very good-looking.C.He wants to be a st

30、ar in Hollywood.D.He practices on speaking a lot.A.Studying commerce.B.Watching TV.C.Enjoying the ads.D.Reading a story.A.A case of bank robbery.B.The interview with the bank clerk.C.The search for reliable witness.D.The terrific detective story.A.Looking for a gift for her husband.B.Talking about a

31、 TV program.C.Bargaining with the shop assistant.D.Buying a television.A.John has no experience at all.B.John has a charming personality.C.There were so many applicants.D.John was so lucky that he got the job.Questions 19 to 21 are based on the conversation you have just heard.（分数：21.00）A.To go to s

32、ee the hip-hop dancing with her.B.To help her fill in the registration form.C.To participate in the dancing competitionD.To show Nick some nice things shes got.A.Nick has never been on TV.B.Nick likes hip-hop dancing very much.C.Nick doesnt mind dancing in the publicD.Nick only makes friends with hi

33、p -hop dancers.A.Two weeks before the final exams.B.One week after the final exams.C.One week before the final exams.D.Two weeks after the final exams.Questions 22 to 25 are based on the conversation you have just heard.（分数：28.00）A.In the street.B.In a bookstore.C.In a dormitory.D.In a classroom.A.F

34、rom a famous sociologist.B.From the woman.C.From his classmates.D.From his professor.A.It contains a lot of good pictures.B.It is mainly about cultural differences.C.It is a little difficult but very humorous.D.It is the best-seller of this year.A.Because he is really eager to read the book.B.Becaus

35、e he has some classes to attend.C.Because he is worried that the book might be sold out.D.Because be has to buy 200 books for his class.五、Section B(总题数：3，分数：70.00)Passage OneQuestions 26 to 28 are based on the passage you have just beard.（分数：21.00）A.Requesting ones business card directly.B.Accepting

36、 ones card but not continuing contact with him.C.Refusing a request for your business card directly.D.Putting ones business card in the card file.A.Say “Thank you“ and put it in your card file.B.Say “Thank you“ and examine it briefly.C.Say “Thank you“ and put it away.D.Say “Thank you“ and pass it to

37、 your secretary.A.To record the meeting one is attending.B.To arrange the next meeting.C.To recall someones name and title.D.To promote understanding between businessmen.Passage TwoQuestions 29 to 31 are based on the passage you have just heard.（分数：21.00）A.How to face misfortune.B.How to keep a posi

38、tive attitude.C.How to face success.D.How to make your self-talk positive.A.We can imagine we are a sport professional.B.We can imagine our cause.C.We can imagine the outcome that we want.D.We can imagine a beautiful picture.A.We should think about people that can help us.B.We should try to talk wit

39、h ourselves.C.We should try to draw on a positive imagination.D.We should write down several positive sentences.Passage ThreeQuestions 32 to 35 are based on the passage you have just heard.（分数：28.00）A.The CEOs rivals.B.The former CEO.C.The CEO himself.D.The employees.A.Things went along very well.B.

40、There were serious product problems.C.Sales dropped.D.The new CEO had to be firedA.Hold a press conference.B.Reorganize.C.Ask for more employees.D.Blame the former CEO.A.More envelopes should be prepared.B.He should write more letters.C.He should consider resigning.D.He should care about his employe

41、es.六、Section C(总题数：1，分数：77.00)Blind photography: the very (36) sounds odd. But a striking exhibition of photographs in California, argues that it stems from the core of (37) art. The show is contemporary everything: underwater scenes, portraits, landscapes, abstracts, and everything else you might (

42、38) from a “sighted“ photographer.How do the blind take their photographs? Some rely on (39) to set up and then describe the shots, and others just point and shoot in the (40) . place. “Just like any good artists,“ says McCulloh, “they have their (41) ways of operating.“One participating photographe

43、r is Pete Eckert, an artist with multiple degrees in design and sculpture who only turned to photography after losing his vision in the mid-1980s. Kurt Weston, another photographer, was a former fashion photographer in Chicago. He lost his vision (42) to AIDS in 1996.What do gallery-goers say? “I wa

44、s very impressed by it. The (43) and experience was amazingly diverse,“ says John Hesketh, a printmaker in Anaheim. (44) “ “Beyond the praise, however, the exhibition also makes another milestone for disabled people everywhere. During a panel discussion on the TV show, one attendee summed it up: (45

45、) “ . I think that by being an artist with a disability, you are continuing the work of those people who fought for basic civil rights to gain access and to have a voice. (46) （分数：77.00）填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_七、Part Reading Compr(总题数：0，分数：0.00)八、

46、Section A(总题数：1，分数：90.00)Theres no question that the Earth is getting hotter. The real questions are : How much of the warming is our fault, and are we (47) to slow the devastation by controlling our insatiable (48) for fossil fuels?Global warming can seem too (49) to worry about, or too uncertainso

47、mething projected by the same computer (50) that often cant get next weeks weather right. On a raw winter day you might think that a few degrees of warming wouldnt be such a bad thing anyway. And no doubt about it: Warnings about (51) change can sound like an environmentalist scare tactic, meant to

48、force us out of our cars and restrict our lifestyles.Comforting thoughts, perhaps. Unfortunately, however, the Earth has some discomforting news. From Alaska to the snowy peaks of the Andes the world is heating up fight now, and fast. Globally, the (52) is up 1 over the past century, but some of the coldest, most remote spots have warmed much more. The results arent pretty. Ice is (53) , rivers are running dry, and coasts are (54) , threatening communities.The (55) are happening largel