1、大学六级-1268 及答案解析(总分：712.00，做题时间：90 分钟)一、Part Writing(总题数：1，分数：106.00)1.现在很多大学生消费水平普遍提高2有人认为社会整体生活水平提高了，大学生花钱多一些无可厚非3你的看法（分数：106.00）_二、Part Reading Compr(总题数：1，分数：70.00)Hydroelectric PowerHydroelectric power is Americas leading renewable energy resource. Of all the renewable power sources, its the mos
2、t reliable, efficient and economical. Water is needed to run a hydroelectric generating unit. Its held in a reservoir or lake behind a dam, and the force of the water being released from the reservoir through the dam spins the blades of a turbine. The turbine is connected to the generator that produ
3、ces electricity. After passing through the turbine, the water re-enters the river on the downstream side of the dam.Hydroelectric plants convert the kinetic energy within falling water into electricity. The energy in moving water is produced in the sun, and consequently is continually being renewed.
4、 The energy in sunlight evaporates water from the seas and deposits it on land as rain. Land elevation differences result in rainfall runoff, and permit some of the original solar energy to be harnessed as hydroelectric power. Hydroelectric power is at present the earths chief renewable electricity
5、source, generating 6% of global energy and about 15% of worldwide electricity. Hydroelectric power in Canada is plentiful and provides 60% of their electrical requirements. Usually regarded as an inexpensive and clean source of electricity, most big hydroelectric projects being planned today are fac
6、ing a great deal of hostility from environmental groups and local people.The earliest recorded use of water power was a clock, constructed around 250 BC. Since then, people have used falling water to supply power for grain and saw mills, as well as a host of other uses. The earliest use of flowing w
7、ater to generate electricity was a waterwheel on the Fox River in Wisconsin in 1882.The first hydroelectric power plants were much more dependable and efficient than the plants of the day that were fired by fossil fuels. This led to a rise in number of small to medium sized hydroelectric generating
8、plants located wherever there was an adequate supply of falling water and a need for electricity. As demand for electricity soared in the middle years of the 20th century, and the effectiveness of coal and oil power plants improved, small hydro plants became less popular. The majority of new hydroel
9、ectric developments were focused on giant mega-projects.Hydroelectric plants harness energy by passing flowing water through a turbine. The water turbine rotation is delivered to a generator, which generates electricity. The quantity of electricity that can be produced at a hydroelectric plant relie
10、s upon two variables. These variables are (1) the vertical distance that the water falls, called the “head“, and (2) the flow rate, calculated as volume over time. The amount of electricity that is produced is thus proportional to the head product and the flow rate.So, hydroelectric power stations c
11、an normally be separated into two kinds. The most widespread are “high head“ plants and usually employ a dam to stock up water at an increased height. They also store water at times of rain and discharge it during dry times. This results in reliable and consistent electricity generation, capable of
12、meeting demand since flow can be rapidly altered. At times of excess electrical system capacity, usually available at night, these plants can also pump water from one reservoir to another at a greater height. When there is peak electrical demand, the higher reservoir releases water through the turbi
13、nes to the lower reservoir.“Low head“ hydroelectric plants usually exploit heads of just a few meters or less. These types of power station use a weir or low dam to channel water, or no dam at all and merely use the river flow. Unfortunately their electricity production capacity fluctuates with seas
14、onal water flow in a river.Around 2003 people believed almost universally that hydroelectric power was an environmentally safe and clean means of generating electricity. Hydroelectric stations do not release any of the usual atmospheric pollutants emitted by power plants fuelled by fossil fuels so t
15、hey do not add to global warming or acid rain. Nevertheless, recent studies of the larger reservoirs formed behind dams have implied that decomposing flooded vegetation could give off greenhouse gases equal to those from other electricity sources.The clearest result of hydroelectric dams is the floo
16、ding of huge areas of land. The reservoirs built can be exceptionally big and they have often flooded the lands of indigenous peoples and destroyed their way of life. Numerous rare ecosystems are also endangered by hydroelectric power plant development.Damming rivers may also change the quantity and
17、 quality of water in the rivers below the dams, as well as stopping fish migrating upstream to spawn. In addition, silt, usually taken downstream to the lower parts of a river, is caught by a dam and so the river downstream loses the silt that should fertilize the rivers flood plains during high wat
18、er periods.Theoretical global hydroelectric power is approximately four times larger than the amount that has been taken advantage of today. Most of the residual hydro potential left in the world can be found in African and Asian developing countries. Exploiting this resource would involve an invest
19、ment of billions of dollars, since hydroelectric plants normally have very high building costs. Low head hydro capacity facilities on small scales will probably increase in the future as low head turbine research, and the standardization of turbine production, reduce the costs of low head hydroelect
20、ric power production. New systems of control and improvements in turbines could lead in the future to more electricity created from present facilities. In addition, in the 1950s and 60s when oil and coal prices were very low, lots of smaller hydroelectric plants were closed down. Future increases in
21、 the prices of fuel could lead to these places being renovated.（分数：70.00）(1).What proportion of the worlds electricity supply is provided by hydroelectric power?（分数：7.00）A.6%.B.9%.C.15%.D.60%.(2).A drawback to low head hydroelectric power stations is that they depend on _ .（分数：7.00）A.the solar activ
22、ityB.seasonal water flowC.seasonal wind directionD.the earths self rotation(3).How far water drops to the turbines in a power station is known as _ .（分数：7.00）A.the headsB.the flow rateC.the vertical distanceD.the heights(4).How is the flow rate of a hydroelectric power station quantified?（分数：7.00）A.
23、The depth of the water.B.Volume over time.C.Speed over time.D.The width of the water.(5).When do high head power plants use surplus electricity to transfer water to a second reservoir?（分数：7.00）A.In the morning.B.At noon.C.In the afternoon.D.At night.(6).What underwater action can lead to the product
24、ion of pollution similar to that produced by fossil fuel power stations?（分数：7.00）A.Mass dying of underwater creature.B.Recycling of underwater waste products.C.Decomposing flooded vegetation.D.Abstracting underwater oil.(7).When did hydroelectric power was universally considered as an environmentall
25、y safe and clean means of electricity generator?（分数：7.00）A.Around 250 BC.B.In 1982.C.In the middle .years of 20th century.D.Until only recently.(8).The origin of hydroelectric power is the _ produced when water obeys the laws of gravity.（分数：7.00）填空项 1:_(9).Global hydroelectric power in theory is app
26、roximately _ than the amount that has been taken advantage of today.（分数：7.00）填空项 1:_(10).Exploiting hydroelectric power resource can cost billions of dollars, for hydroelectric plants normally have _ .（分数：7.00）填空项 1:_三、Part Listening Com(总题数：0，分数：0.00)四、Section A(总题数：3，分数：105.00)Questions 11 to 18 a
27、re based on the conversation you have just heard.（分数：56.00）A.He does not have a good hearing.B.He has been driving madly for a year.C.He never takes what she says seriously.D.He is always impatient with her.A.She lost a finger.B.Someone hit her in the nose.C.She became a surgical nurse.D.She had an
28、operation on her nose.A.Attending the party.B.Visiting some friends.C.Studying for an exam.D.Writing a letter of apology.A.Teachers like Prof. Johnson are rare.B.Prof. Johnson has won a million dollars.C.There are many teachers as good as Prof. Johnson.D.Prof. Johnson is likely to be teaching at tha
29、t schoolA.The stories probably werent true.B.Tom doesnt usually tell funny stories.C.Shes surprised Tom was so serious last night.D.She wants to know where Tom heard the stories.A.Find a hotel nearby again in a few days.B.Accommodate his parents in his dormitory.C.Ask his parents not come until he f
30、inds a proper hotel.D.Phone a hotel farther from the campus for a reservation.A.He is always punctual for his class.B.He rarely notices which students are late.C.He wants his students to be on time for class.D.He doesnt allow his students to tell jokes in class.A.The signing is very necessary.B.The
31、signing is just a reassurance.C.The signing is not very necessary.D.The signing is a way to monitor abuse.Questions 19 to 22 are based on the conversation you have just heard.（分数：28.00）A.Common causes of anger.B.Judging peoples behavior.C.Changing peoples attitudes.D.The effects of negative behavior
32、.A.When theyre unable to control the persons behavior.B.When the causes of the behavior are obvious.C.When the consequences of the behavior are unpleasant.D.When the behavior is expected.A.Its not always clear why people behave in certain ways.B.People usually blame others for their mistakes.C.Certa
33、in conditions cause drivers to behave strangely.D.The reason for some behavior is obvious.A.They usually accept responsibility.B.They blame factors beyond their control.C.They complain about their personal problems.D.They compare their behavior to others.Questions 23 to 25 are based on the conversat
34、ion you have just heard.（分数：21.00）A.The employer and employee.B.The interviewer and interviewee.C.The teacher and student.D.The police officer and driver.A.She didnt yield to children crossing the road.B.She parked illegally near the school.C.She exceeded the speed limit.D.She was drunk-driving.A.Th
35、e woman gets a ticket.B.The man arrests the woman.C.The woman is taken to court.D.The woman ran away.五、Section B(总题数：3，分数：70.00)Passage OneQuestions 26 to 28 are based on the conversation you have just heard.（分数：21.00）A.His moms support.B.His wifes suggestion.C.His terrible experience in the hotel.D
36、.His previous business success of various levels.A.Careful, helpful and beautiful.B.Strict, sensitive and supportive.C.Modest, helpful, and hard-working.D.Loving, supportive and strong-willed.A.Self-confidence, hard work, higher education and a poor family.B.Moms encouragement, clear goals, self-con
37、fidence and hard work.C.Clear goals, moms encouragement, a poor family and higher education.D.Moms encouragement, a poor family, higher education and opportunities.Passage TwoQuestions 29 to 31 are based on the conversation you have just heard.（分数：21.00）A.To make a comparison between Dave and other
38、films.B.To discuss the Americans ideas about the President.C.To tell readers about the American government.D.To introduce a new film to the reader.A.Sigourney Weaver.B.Bill Mitchell.C.Kevin Kline.D.Ivan Reitman.A.The author makes fun of the President.B.The author thinks highly of the film.C.The auth
39、or is a fan of Hollywood comedies.D.The author wishes to become the American President.Passage ThreeQuestions 32 to 35 are based on the conversation you have just heard.（分数：28.00）A.They have lost their identity.B.Their children speak different languages.C.Their children are losing their identity.D.T
40、hey cannot speak their native language.A.Because she wanted them to respect her.B.So that they knew they were of Korean origin.C.Because she didnt want them to speak English.D.So that they would be more successful in the U. S.A.Because they behaved quite differently.B.Because they had never been the
41、re before.C.Because they had different facial appearance.D.Because they couldnt understand the language.A.Because it gives them self-confidence and better chance.B.Because it makes the second generation love their motherland.C.Because it helps the second generation to understand their parents.D.Beca
42、use it strengthens the family ties and reminds them of their identity.六、Section C(总题数：1，分数：77.00)Ironically, in the United States, a country of immigrants, prejudice and discrimination continue to be serious problems. There was often tension between each established group of immigrants and each (36)
43、 group. As each group became more (37) successful, and more powerful, they excluded newcomers from full participation in the society. Prejudice and discrimination are part of American history; however, this prejudicial treatment of different groups is nowhere more (38) than with black Americans.Blac
44、ks had (39) disadvantages. For the most part, they came to the land of opportunity as slaves and they were not free to keep their heritage and cultural (40) Unlike most European immigrants, blacks did not have the protection of a support group. They could not mix easily with the (41) society either
45、because of their skin color. It was difficult for them to adapt to the American culture. Even after they became free people, they still (42) discrimination in employment, housing and education.Until the twentieth century, the (43) of the black population lived in the southern part of the United Stat
46、es. Then there was a population shift to the large cities in the North. Prejudice against blacks is often associated with the South.(44) .Because their neighborhoods are segregated, many blacks feel that educational opportunities are not adequate for their children. (45) . Naturally, all parents wan
47、t the best possible education for their children.(46) . Time will be the real solution to the problem of race.（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、Section A(总题数：1，分数：90.00)President Coolidges statement, “The busin
48、ess of America is business“, still points to an important truth today that business institutions are of more concern in American society than any other kind of organization, including the government. Why do business institutions possess this great prestige? One reason is that Americans view business as being more firmly based on the ideal of competition than other institutions in society. Since competition is seen as the major source of progress and prosperity by Americans, competitive business institu
