大学六级-3及答案解析.doc

1、大学六级-3 及答案解析(总分：712.00，做题时间：90 分钟)一、BPart Writing(总题数：1，分数：106.00)1.高校扩招是一件好事 2. 高校扩招公带来一些问题 3. 我的观点（分数：106.00）_二、BPart Reading (总题数：1，分数：70.00)B Directions:/BI In this part, you will have 15 minutes to go over the passage quickly and answer the questions on Answer Sheet 1.For questions 1-4, markY (

2、for YES) if 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.For questions 5-10, complete the sentences with the information given in the passa

3、ge./IB The Science that Imitates Natures Mechanisms/BA European industrialist not long ago became very suspicious about American purposes and intentions in certain areas of scientific research. He learned by chance that the United States was signing contracts with scientists in England, France, Ital

4、y, Germany, Belgium, Sweden, Uruguay, Chile, Argentina, Australia, and other countries, calling for research into such matters as the function of the frogs eye and the learning ability of the octopus.It seemed to the industrialist that such studies could not possibly have any practical value. He ser

5、iously believed that the United States was employing the foreign scientists to do meaningless work and occupy their time, while American scientists were busy in the really important areas of science. He was unaware of the fact that the United States was spending much more money at home than abroad f

6、or similar studies.BNature does things better than people/BActually, the research he questioned involves a field of science so new that most people have never heard of it. Named bionics in 1960, this science is the study of living creatures, a study in search of principle applicable to engineering.

7、Nature has operated a vast laboratory for two billion years, and bionics probes the secrets of the marvelous “special-purpose“ mechanisms that have developed.Take the frogs eye for example. A frog eats only live insects, and its eye instantly spots a moving fly within reach of its tongue. You can su

8、rround a frog with dead (therefore motionless) flies, and it will never know they are there.If we can completely understand the mechanic of the frogs eye, we can develop a “map reading eye“ for missiles and a “pattern-recognition eye“ for our basic air defense system called SAGE (semi-automatic grou

9、nd environment). SAGE is badly overworked. Its international network of radar “EYES“ supplies a tremendous mass of unimportant details about meteorites, clouds, flights of ducks, geese, and friendly planes, and it sometimes gets confused. Until we can build a mechanical frogs eye into SAGE, it will

10、remain somewhat inefficient.BMilitary and civilian uses/BThe frogs eye holds promise in civilian life, too. For example, at most major airports the airtraffic problem-with 20 million flights per year to handle-has reached a critical stage. We must develop better devices for monitoring and controllin

11、g air traffic.Special-purpose mechanism as exciting as the frogs eye can be found throughout nature. The bat is under study because the bats sonar is much more efficient than man-made sonar. By bouncing supersonic squeaks off objects around him, the bat flies about with remarkable skills. A bat can

12、fly through a dark room strung with dozens of piano wires and never touch a single wire.The mosquito is under study because we need to solve the problem of Static that lessens the efficiency of our communications systems. A mosquito, simply by vibrating its wings, can set up a hum that will cut thro

13、ugh any interfering noise (man or nature can create loud whistles or thunder, for instance) and give a message to another mosquito 150 feet away.BElectrical system/BTheoretically at least we should be able to copy these mechanisms found in nature, for all biological organisms-from mosquito to frog t

14、o man-are in part actually electrical systems. The sense organs that “connect“ all animals to the outside world are merely transducers-instruments like a microphone, TV camera, or phonograph pickup arm-which convert one form of energy into another. A microphone, for example, converts sound into elec

15、trical signals which are carried to a loudspeaker and converted back into sound waves. Similarly, the nerve cells of a mans ear convert a cry for help into electrical pulses which are sped over his nervous system to the brain. The brain receives the signal, and then sends an answering electrical-pul

16、se message to his legs, where it is convened into muscular energy when he starts running toward the cry.We have been slow to profit from this close analogy between a biological organism and an electronic system. It was only in the early 1950s that we consciously began to unite biologists with physic

17、ists, chemists, electronic experts, mathematicians, and engineers in a team to solve the mysteries of biological machinery. The first formal bionics meeting-called by the U. S. Ak Force-was held in 1960. A year later there were 20,000 biologists at work in research laboratories in the United States

18、more than double the number employed ten years earlier.BElectronic and nonelectronic/BA bionicist can, of course, copy much in nature without resorting to electronics. For example, an airplane wing that gives unique stability to a small plane was introduced by the Cessna Company in 1960; the wing ti

19、ps of a seabird served as the model. An artificial gill to extract oxygen from water and throw off carbon dioxide like a fishs gill is being studied by the Navy for use on submarines. For the Navy, too, the U. S. Rubber Company is making tests of a rubber “skin“ for boats and submarine hulls, modele

20、d on the elastic skin of a dolphin.But the greatest advances in bionics unquestionably will be electronic in nature. Already an instrument laboratory has developed an “eye“ that can peer through a microscope and distinguish certain kinds of diseased ceils from healthy cells. General Electric Company

21、 has an experimental eye, the Visilog, that operates on the principle used by the human eye in judging distance as a solid surface is approached.We humans judge out rate of approach by the changed occurring in the texture of a surface as our eyes get closer and closer to it. This explains why we som

22、etimes fail to see a glass door, but we always stop short of a brick wall. General Electrics eye calculates the rate of approach to any textured surface and contains a device to slow the approach speed. It is being developed, hopefully, to pemit a planned moon-probe rocket to make a soft landing on

23、the moons surface. A small variety of Visilog may be created for the blind.BEars, nose, and brain/BThe owls ears are fascinating to many bionicists, for the owl has uncanny directional hearing. He can hear a mouse chewing and fly down on it, even though it is hidden from sight under a pile of leaves

24、 For those engaged in designing sensitive mechanic ears for listening to enemy sonar, owl research may indeed have value.Nor is the nose being ignored. Many male creatures find their way to their mates by following an odor given off by the female. To explore mechanical scent detection, the Armor re

25、search Foundation has developed a synthetic nose which can, it is believed, detect scents in vapors at a ratio of one particle to a million. The Foundation thinks that it can be used in early detection of food spoilage, and to warn industrial and military personnel of the presence of poisonous vapor

26、s.Finally, the bionicist is extremely interested in the one general mechanism that serves the entire animal kingdom-the brain. The brain makes all animals unimaginably efficient, like small-size computers. “Actually, though,“ says Dr. Warren S. Moculloch, one of our great computer-scientists, “compu

27、ters are nothing more than stupid beasts, they havent the brains ofan ant. And they cant do the job that must be done.“Hopefully, bionicist is extremely interested in the one general mechanism that mimics the brain. But as long as the tiny brain of a pigeon continuous to baffle science, there seems

28、little likelihood of understanding the secrets of the human brain during this century. Yet, even if the bionicist never attains this goal, he will make many discoveries that once seemed impossible to us. Even in our lifetime he may be able to build machines that will be intelligent enough.（分数：70.00）

29、1).The United States was making research on the frogs eye and the learning ability.（分数：7.00）填空项 1:_(2).The United States was employing the foreign scientists to do meaningless work to occupy their time.（分数：7.00）填空项 1:_(3).Bionics is a study in search of principle applicable to engineering by studyi

30、ng of living creatures.（分数：7.00）填空项 1:_(4).Bionics is now developed to a remarkable level.（分数：7.00）填空项 1:_(5).We must develop better devices for monitoring and controlling air traffic because _ has reached a critical stage.（分数：7.00）填空项 1:_(6).A mosquito can give a message to another mosquito 150 fee

31、t away by _.（分数：7.00）填空项 1:_(7).Animals sense organs are only _ which convert energy from one form into another.（分数：7.00）填空项 1:_(8).The U. S. Rubber Company is making tests of modeling the elastic skin of a dolphin for _.（分数：7.00）填空项 1:_(9).Owl research may have value in designing _.（分数：7.00）填空项 1:_

32、10)._ is a general mechanism that serves the entire animal kingdom.（分数：7.00）填空项 1:_三、BPart Listenin(总题数：0，分数：0.00)四、BSection A/B(总题数：3，分数：105.00)B Directions:/BI In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions wil

33、l be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must rend the four choices marked A, B, C and D, and decide which is the best answer. Then mark the corresponding letter on Answer Sheet

34、2 with a single line through the centre./IBQuestions 11to 18 are based on the conversation you have just heard./B （分数：56.00）(1). A. The man should try to be more understanding. B. The mans wife should be more understanding. C. The mans negative attitude may be derived from his childhood. D. The pess

35、imism of mans wife may be the result of her past experiences.（分数：7.00）A.B.C.D.(2). A. A snowstorm. B. An earthquake. C. A traffic accident. D. A hurricane.（分数：7.00）A.B.C.D.(3). A. The two speakers are classmates. B. The man is majoring in elementary education. C. The woman is majoring in elementary

36、education. D. The two speakers got to know each other in a class.（分数：7.00）A.B.C.D.(4). A. Shes got a stomachache. B. She feels perfectly fine. C. Shes going to get married. D. Shes going to have a baby.（分数：7.00）A.B.C.D.(5). A. It is the best city hes ever visited. B. It was worse than he had expecte

37、d. C. It is difficult to get around in the city. D. The hotel service is terrible in the city.（分数：7.00）A.B.C.D.(6). A. To encourage them. B. To stop them immediately. C. To give some explanation. D. To leave them alone.（分数：7.00）A.B.C.D.(7). A. Unemployment. B. Family breakup. C. Mental problems. D.

38、Drinking.（分数：7.00）A.B.C.D.(8). A. The woman is the mans boss. B. The man is the womans husband. C. The woman is the headmaster of a school. D. The woman wants to know something about a student.（分数：7.00）A.B.C.D.BQuestions 19 to 21 are based on the conversation you have just heard./B （分数：21.00）(1). A.

39、 A businessman in a store. B. A wander in the street. C. Amateur detective. D. A man with plain clothes.（分数：7.00）A.B.C.D.(2). A. Fifteen cigarette fighters. B. Fifty cigarette lighters. C. Sixty lipsticks. D. An identity card.（分数：7.00）A.B.C.D.(3). A. At last, the man gave a break to the woman. B. Th

40、e woman was arrested by the man. C. The man gave choices to the woman. D. The man missed the woman.（分数：7.00）A.B.C.D.BQuestions 22 to 25 are based on the conversation you have just heard./B （分数：28.00）(1). A. Eggs. B. Diets. C. Protein. D. Exercises.（分数：7.00）A.B.C.D.(2). A. One; Two; One B. Two; One;

41、One. C. One; One; Two. D. Two; One; Two.（分数：7.00）A.B.C.D.(3). A. Because she believed eggs were not very expensive and also contained a lot of protein. B. Because she thought her heart was strong and eating too much protein could not hurt her heart. C. Because she had been told that eating eggs coul

42、d help her to have a fine figure. D. Because she liked eggs so much that she could not stand if she didnt cat eggs every day.（分数：7.00）A.B.C.D.(4). A. One week. B. One month. C. Two days. D. Three days.（分数：7.00）A.B.C.D.五、BSection B/B(总题数：3，分数：70.00)B Directions:/BI In this section, you will hear 3 sh

43、ort 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. Then mark the corresponding letter on Answer Sheet 2 with a sing

44、le line through the centre./IBPassage OneQuestions 26 to 28 are based on the passage you have just heard./B （分数：21.00）(1). A. Probing into the privacy of famous people. B. Short articles about less important events. C. Colorful pictures and smaller size. D. All above.（分数：7.00）A.B.C.D.(2). A. The Dai

45、ly Star. B. The Times. C. The Daily Telegraph. D. The Daily Minor.（分数：7.00）A.B.C.D.(3). A. The Independent. B. The Financial Times. C. The Daily Mirror. D. The Daily Telegraph.（分数：7.00）A.B.C.D.BPassage TwoQuestions 29 to 31 are based on the passage you have just heard./B （分数：21.00）(1). A. Life was e

46、asy and food was easy to find. B. People care more about how to survive. C. The people took care of each other out of love. D. There are many developed individual monetary systems.（分数：7.00）A.B.C.D.(2). A. This need to use the services of people who were not physically near. B. This need to have a co

47、mmon set of values. C. The fear of things that were more different than what people were used to. D. This need to store wealth.（分数：7.00）A.B.C.D.(3). A. How the survival skills of the early people influenced their diets. B. This need to learn how to save money; C. The increasingly complex relationship between values and the use of money. D. The difficulty of trading larger and larger amounts of good.（分数：7.00）A.B.C.D.BPassage ThreeQuestions 32 to 35 are based on the passage you have just heard./B （分数：28.00）(1). A. Neither of the two types of rocke