公共英语五级听力-7及答案解析.doc

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1、公共英语五级听力-7 及答案解析(总分：100.00，做题时间：90 分钟)一、BSection Liste(总题数：0，分数：0.00)二、BPart A/B(总题数：1，分数：30.00)You will hear a talk. As you listen, answer Questions 1 to 10 by circling TRUE or FALSE. You will hear the talk only once.（分数：30.00）(1).The scientists in charge of Kepler confirmed the discovery of its fi

2、rst Earthlike world on Dec. 15.（分数：3.00）A.正确B.错误(2).Kepler 22b is 600 light-years away from the earth.（分数：3.00）A.正确B.错误(3).Kepler 22b orbits very well.（分数：3.00）A.正确B.错误(4).NASAs astronomers are sure that Kepler 22b is gaseous.（分数：3.00）A.正确B.错误(5).Kepler 22b has a radius 2.5 times that of the earth.（

3、分数：3.00）A.正确B.错误(6).Kepler 22bs parent star is similar to the sun.（分数：3.00）A.正确B.错误(7).NASAs researchers reckon its surface temperature is about 22.（分数：3.00）A.正确B.错误(8).Of Keplers haul, 19% seem to be of a similar size to Earth.（分数：3.00）A.正确B.错误(9).The goal is to know the number of planets that coul

4、d support life.（分数：3.00）A.正确B.错误(10).According to the talk, there are numerous suitable plants for humans.（分数：3.00）A.正确B.错误三、BPart B/B(总题数：3，分数：30.00)You will hear 3 conversations or talks and you must answer the questions by choosing A, B, C or D. You will hear the recording only once.（分数：9.00）(1).

5、What mainly causes the death among youth? A. Traffic accidents. B. Smoking-related disease. C. Murder. D. All of the above.（分数：3.00）A.B.C.D.(2).How many high school students will become regular smokers every other day? A. 75. B. 23. C. 30. D. 3,000.（分数：3.00）A.B.C.D.(3).What can be implied from the p

6、assage? A. Smoking rates among youth have declined very little. B. There are now more female than male smokers among high school seniors. C. High smoking rates are due to the increase in wealth. D. Smoking at high school are from low socio-economic backgrounds.（分数：3.00）A.B.C.D.（分数：9.00）(1).What is t

7、he main purpose of the talk? A. To outline contrasting types of economic systems. B. To explain the science of economics. C. To argue for the superiority of one economic system. D. To compare barter and money-exchange markets.（分数：3.00）A.B.C.D.(2).Who has the greatest degree of control in the adminis

8、tered system? A. Individual households. B. Small businesses. C. Major corporations. D. The government.（分数：3.00）A.B.C.D.(3).Which of the following is not mentioned as a criterion for determining a persons position in a traditional society? A. Family background. B. Age. C. Religious beliefs. D. Custom

9、.（分数：3.00）A.B.C.D.（分数：12.00）(1).What does “color bar“ in the first paragraph mean? A. A bar which is painted in different colors. B. The fact that white and black customers are served separately. C. A bar of chocolate having different colors. D. A counter where people of different colors are served

10、with beer.（分数：3.00）A.B.C.D.(2).What do we know about the writer? A. The writer is a black school teacher. B. The writer is an African servant. C. The writer is a black, but a friend of Europeans. D. The writer is a rich black.（分数：3.00）A.B.C.D.(3).Why did the manager of the drugstore shout at the wri

11、ter in a bastard language? A. Because he hadnt learned to speak polite English. B. Because he thought the writer wouldnt understand English. C. Because the writer was standing in the place where only European customers were allowed to stand. D. Because that was the only language he could speak when

12、he was angry.（分数：3.00）A.B.C.D.(4).What does “he was one of the old school“ mean? A. He believed in the age-old practice of racial discrimination. B. He was a very old man. C. He graduated from an old conservative school. D. He was in charge of an old school.（分数：3.00）A.B.C.D.四、BPart C/B(总题数：1，分数：40.0

13、0)You will hear a long talk. As you listen, answer the questions or complete the notes in your test booklet for Questions 21 to 30 by writing no more than three words in the space provided on the right. You will hear the talk twice.（分数：40.00）(1).What animal can be seen like an efficient machine of d

14、eath?（分数：4.00）填空项 1:_(2).Many animals use locomotion to find a mate, escape enemies, and _.（分数：4.00）填空项 1:_(3).Automobiles, _ transport human beings from deep oceans to as far away as the moon.（分数：4.00）填空项 1:_(4).Which part of the shark is the key to the animals high efficiency in swimming through t

15、he water?（分数：4.00）填空项 1:_(5).These fibers can store or release large amounts of energy depending on whether the fibers are _.（分数：4.00）填空项 1:_(6).The biologists found the greatest stretching occurs where the shark _ while swimming.（分数：4.00）填空项 1:_(7).What causes the fibers to store so much energy?（分数

16、：4.00）填空项 1:_(8).When the shark detects an important food source, the pressure inside the animal will increase by _.（分数：4.00）填空项 1:_(9).How many kilometers an hour the dolphin has been clocked?（分数：4.00）填空项 1:_(10).Dolphins skin is so _ that it bends and yields to the waviness of the water.（分数：4.00）填

17、空项 1:_公共英语五级听力-7 答案解析(总分：100.00，做题时间：90 分钟)一、BSection Liste(总题数：0，分数：0.00)二、BPart A/B(总题数：1，分数：30.00)You will hear a talk. As you listen, answer Questions 1 to 10 by circling TRUE or FALSE. You will hear the talk only once.（分数：30.00）(1).The scientists in charge of Kepler confirmed the discovery of i

18、ts first Earthlike world on Dec. 15.（分数：3.00）A.正确B.错误 解析：听力原文 Over the past few days, the existence of the most Earthlike planet has just been confirmed one of the most memorable slogans to come out of the climate-change talks in Durban is: “there is no planet B“. But what if there were? Over the pa

19、st decades, astronomers logged thousands of so-called “exoplanets“worlds which orbit stars other than the sun. The scientists in charge of Kepler, a space telescope designed to search for such planets, confirmed that their instruments finding of its first Earthlike world on December 5th. It is named

20、 Kepler 22b. This planet circles a star 600 light-years away and its existence had previously been suspected. Kepler belongs to NASA and works by observing dips in a stars brightness as a planet passes in front of it. It flags likely looking reductions as “candidate planets“, of which Kepler 22b was

21、 one. Confirming a planets existence needs to pass 3 courses, and Kepler 22b now passes this test. Importantly, it orbits well within its stars “Goldilocks zone“: neither too close nor too far away for liquid water to exist on its surface. It joins two other Earthlike planets Gliese 581d and HD 8551

22、2b which were discovered by another instrument within the past few years. In fact, the term “Earthlike“ is a stretch. Kepler 22b has a radius 2.4 times that of Earth, and if it is made from roughly the same stuff its surface gravity will also be about 2.4 times as strong. But NASAs astronomers remai

23、n unsure whether it is predominantly liquid, gaseous or solid. However, Kepler 22b is the most promising exoplanet ever found. Unlike the others, which skirt the edges of their stars Goldilocks zones, Kepler 22b orbits comfortably within its own. NASAs researchers predict its surface temperature is

24、about 22, compared with 15 on Earth. Its parent star is similar to the sun, again unlike those of the other two planets, both of which orbit cooler, dimmer stars. In truth, Gliese 581ds parent is a red dwarfthe tiniest stellar species. That means its Goldilocks zone is so close to it that the planet

25、 might be tidally locked, as the moon is to the Earth. If that was the case, one side of Gliese 581d would be constantly lit (and heated) while the other experienced permanent darkness. The three potentially habitable exoplanets might soon be joined by many more. In the two and a half years since it

26、s launch, Kepler has spotted 2,326 candidate planets. And about 650 more have been discovered by other instruments. That plethora allows astronomers to start drawing conclusions about how common various kinds of planets are. Of Keplers haul, 9 percent seem to be of a similar size to Earth; a further

27、 29 percent are Super Earths which are substantially larger than Earth and are nevertheless rocky. 48 of Keplers unconfirmed candidates look as if they orbit within their stars habitable zones. Of those, ten seem to be Earth-sized. Of course, the terminal goal is to let astronomers make a plausible

28、estimate of the total number of planets in the galaxy, of the number that can support life, and of the part of those that could sustain human colonists. If only a few of Keplers possible Earthlike planets turn out to be real, that third number is likely to be in the millions.(2).Kepler 22b is 600 li

29、ght-years away from the earth.（分数：3.00）A.正确B.错误 解析：(3).Kepler 22b orbits very well.（分数：3.00）A.正确 B.错误解析：(4).NASAs astronomers are sure that Kepler 22b is gaseous.（分数：3.00）A.正确B.错误 解析：(5).Kepler 22b has a radius 2.5 times that of the earth.（分数：3.00）A.正确B.错误 解析：(6).Kepler 22bs parent star is similar t

30、o the sun.（分数：3.00）A.正确 B.错误解析：(7).NASAs researchers reckon its surface temperature is about 22.（分数：3.00）A.正确 B.错误解析：(8).Of Keplers haul, 19% seem to be of a similar size to Earth.（分数：3.00）A.正确B.错误 解析：(9).The goal is to know the number of planets that could support life.（分数：3.00）A.正确 B.错误解析：(10).Acc

31、ording to the talk, there are numerous suitable plants for humans.（分数：3.00）A.正确B.错误 解析：三、BPart B/B(总题数：3，分数：30.00)You will hear 3 conversations or talks and you must answer the questions by choosing A, B, C or D. You will hear the recording only once.（分数：9.00）(1).What mainly causes the death among y

32、outh? A. Traffic accidents. B. Smoking-related disease. C. Murder. D. All of the above.（分数：3.00）A.B. C.D.解析：听力原文 Today, as in every other day of the year, more than 3,000 American adolescents would smoke their first cigarette on their way to becoming regular smokers as adults. During their lifetime,

33、 it can be expected that of these 3,000 adolescents, about 23 would be murdered, 30 would die in traffic accidents, and nearly 750 would be killed by a smoking-related disease. We could see that the number of deaths due to cigarette smoking outweighs all other factors, whether voluntary or involunta

34、ry, as a cause of death. Since the late 1970s, when daily smoking among high school seniors reached 30%, smoking rates among teenagers have fallen. When the fall is impressive, several important issues must be raised. First, in the past few years, smoking rates among teenagers have declined very lit

35、tle. Second, in the late 1970s, smoking among male high school seniors surpassed that among female by nearly 10%. The statistic is reversing. Third, some recent studies have shown high school dropouts have excessively high smoking rates, as much as 75%. Finally, though significant fall in adolescent

36、 smoking have happened in the past decade, no definite reasons for the fall exist. Within this context, the National Cancer Institute began its current effort to determine the most effective ways to reduce smoking levels among teenagers.(2).How many high school students will become regular smokers e

37、very other day? A. 75. B. 23. C. 30. D. 3,000.（分数：3.00）A.B.C.D. 解析：(3).What can be implied from the passage? A. Smoking rates among youth have declined very little. B. There are now more female than male smokers among high school seniors. C. High smoking rates are due to the increase in wealth. D. S

38、moking at high school are from low socio-economic backgrounds.（分数：3.00）A.B. C.D.解析：（分数：9.00）(1).What is the main purpose of the talk? A. To outline contrasting types of economic systems. B. To explain the science of economics. C. To argue for the superiority of one economic system. D. To compare bar

39、ter and money-exchange markets.（分数：3.00）A. B.C.D.解析：听力原文 Individual economic units can interact with one another in various ways. Three basic ways might be described as the market system, the administered system, and the traditional system. In a market system, individual economic units are free to i

40、nteract among each other in the marketplace. It is possible to buy goods from other economic units or sell goods to them. In a market, transactions might take place through barter or money exchange. In a barter economy, real commodities are traded against each other. Apparently, finding someone who

41、wants to trade my old car in exchange for a sailboat might not be an easy task. Thus, the introduction of money as a medium of exchange transactions considerably. In the modem market economy, commodities and services are bought or sold for money. An alternative to the market system is administrative

42、 control by certain agency over all transactions. This agency would issue commands or edicts as to how much of each commodity and service should be produced, exchanged, and consumed by each economic unit. Central planning might be one way of administering such an economy. The central plan shows the

43、amounts of each good produced by the various companies and allocated to different households for consumption. This is an example of the complete planning of production, consumption, and exchange for the whole economy. In a traditional society, production and consumption patterns are controlled by tr

44、adition. Every persons place within the economic system is fixed by religion, parentage and custom. Transactions take place on the basis of tradition as well. People belonging to a certain group or caste might have an obligation to provide others with food, shelter and care for their health. Obvious

45、ly, in a system where every decision is made on the basis of tradition alone, progress might be difficult to achieve. A stagnant society might result.(2).Who has the greatest degree of control in the administered system? A. Individual households. B. Small businesses. C. Major corporations. D. The go

46、vernment.（分数：3.00）A.B.C.D. 解析：(3).Which of the following is not mentioned as a criterion for determining a persons position in a traditional society? A. Family background. B. Age. C. Religious beliefs. D. Custom.（分数：3.00）A.B. C.D.解析：（分数：12.00）(1).What does “color bar“ in the first paragraph mean? A.

47、 A bar which is painted in different colors. B. The fact that white and black customers are served separately. C. A bar of chocolate having different colors. D. A counter where people of different colors are served with beer.（分数：3.00）A.B. C.D.解析：听力原文 There was a shop in the town of Mufulira which wa

48、s known for its color bar. It was a drugstore. When Europeans were served at the counter, a long queue of Africans formed at the window. They often not only were kept waiting but were rudely treated by the shop assistants when they were served. One day I was decided to make a public protest against this kind of thing, and many of my students followed me to the store and waited outside to see what would happen. I just went into the shop and asked the