大学英语六级（2013年12月考试改革适用）-试卷212及答案解析.doc

1、大学英语六级（2013 年 12 月考试改革适用）-试卷 212 及答案解析(总分：118.00，做题时间：90 分钟)一、Writing(总题数：2，分数：4.00)1.Part I Writing（分数：2.00）_2.For this part, you are allowed 30 minutes to write a short essay on the topic The importance of being modest. You can cite examples to illustrate your point. You should write at least 150

2、words but no more than 200 words.（分数：2.00）_二、Listening Comprehens(总题数：11，分数：50.00)3.Part II Listening Comprehension_4.Section A_A.Going home from school.B.Waiting for Lori.C.Doing his English assignments.D.Waiting to see Professor John.A.She is the professors daughter.B.She has just come out of an i

3、nterview for the job.C.She herself did the job before.D.She is a part-time secretary to the professor.A.It is very good.B.It should be higher.C.It varies according to the persons experience.D.It is the same as the post office pays.A.He is afraid that his chance of getting the job is slim.B.He wonder

4、s whether he can have enough time to do the job.C.He fears that the job will be too hard for him.D.He fears that the job will be too boring.A.In the newspaper.B.On the TV.C.From her colleague.D.From the radio.A.Tomato, cheese, or apple.B.Water, cheese, or chocolate.C.Tomato, cheese, or chocolate.D.T

5、omato, apple, or cheese.A.The fish.B.The sugar.C.The cheese.D.The flour.A.When all materials are prepared.B.When the shop is open for business.C.After a couple of years.D.After several months.5.Section B_A.Enjoying strong feelings and emotions.B.Defying all dangers when they have to.C.Being fond of

6、making sensational news.D.Dreaming of becoming famous one day.A.Working in an emergency room.B.Watching horror movies.C.Listening to rock music.D.Doing daily routines.A.A rock climber.B.A psychologist.C.A resident doctor.D.A career consultant.A.Ray Kroc.B.Two McDonald brothers.C.A 56-year-old busine

7、ssman.D.A man from the McDonald family.A.Customers can get the same food at any McDonalds in any state or country.B.The employees are helpful and polite.C.The food tastes like home-made.D.The table and floors are clean.A.The hamburgers.B.The sandwiches.C.The milk shakes.D.The French fries.A.2.7 mill

8、ion dollars.B.6.7 million dollars.C.About 7 million dollars.D.About 8 million dollars.6.Section C_A.Factors that affect successful crocodile communication.B.Some reasons for crocodile vocalizations.C.Ways that newborn crocodiles learn to communicate.D.Reasons why crocodile vocalization is difficult

9、to study.A.To frighten other male alligators.B.To attract mates.C.To locate hatchlings.D.To threaten females.A.To reassure her that they are safe.B.To signal that they are ready to follow her.C.To make sure she does not forget them.D.To indicate that they need to be relocated to a larger nest.A.He i

10、s concerned about the accuracy of some of the information the experts provided.B.He is hopeful that the class will be able to discuss it.C.He thinks it was overly critical of some recent theories about crocodiles.D.He is surprised that it did not include more examples of crocodile communication.A.In

11、 America.B.In the Center of America.C.In South America.D.In North America.A.To present evidence that supports the hunting theory.B.To present evidence that mammoths migrated southward to avoid cold winters.C.To point out that mammoth bones are usually found near human debris.D.To demonstrate that la

12、rge animals were able to survive in a variety of habitats.A.Their excessive hunting of mammoths was responsible for the extinction of these animals.B.Their lack of tools for processing meat contradicts the hunting theory.C.They were less accomplished at hunting mammoths than the hunting theory sugge

13、sts.D.They were probably too afraid of large animals.A.To give an example of a discovery that was unexpected.B.To illustrate the consequences of intense volcanic activity.C.To question a theory about the origin of shield volcanoes.D.To suggest an explanation for why Venus does not have moving tecton

14、ic plates.A.Gases released as a result of volcanic activity.B.Chemical reactions caused by high surface temperatures.C.Bursts of radio energy from the planes surface.D.Strong winds that blow dust into the atmosphere.A.The theory has recently been proved by direct observation.B.At least two kinds of

15、evidence support the theory.C.The data collected so far about the theory are contradictory.D.New findings have made the theory quite unlikely.三、Reading Comprehensio(总题数：8，分数：60.00)7.Part III Reading Comprehension_8.Section A_Many workers who worked in the World Trade Center after the September eleve

16、nth attacks became sick. They breathed a mix of dust, smoke and chemicals in the ruins of the Twin Towers and a third building that fell. Some went clays without good protection for their 1. Five years later, many of the thousands who worked at Ground Zero in the early days after the attacks still h

17、ave health problems. Doctors at Mount Sinai Medical Center in New York City have 2the results of the largest study of these workers. The study 3high rates of breathing problems in members of the building traders, firefighters, police officers and other workers. Almost seventy percent of the workers

18、in the study had a new or worsened breathing problem. These problems developed during or after their time working in the mountain of 4. About sixty percent still had breathing problems at the time of their 5. The researchers say they decided to study the effects on breathing first because other diso

19、rders might be slower to appear. Mount Sinai says it tested almost twelve thousand people between two thousand two and two thousand four. Eight out of ten of them agreed to have their results used in the report. The new results added strength to a Mount Sinai study released in two thousand four. Tha

20、t study was based on only about one thousand workers. Some lawmakers have 6criticized city and state officials for letting workers labor at Ground Zero without 7equipment. Officials have also been 8for saying the air was relatively safe. State and federal 9have promised more than fifty million dolla

21、rs to pay for 10of the workers. Doctor Robin Herbert is one of the directors of the Mount Sinai testing program. She says people are still coming to the hospital for treatment of problems that were caused by the dust at Ground Zero. In her words:“ My worry is that money will be gone in a year, and w

22、hat happens then?“A) wreckage B) criticized C) commented D) lungs E) treatment F) body G) examination H) announced I) promised J) confirmed K) workers L) sharply M) satisfactory N) rubbish O) officials（分数：20.00）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:_10.Section B_Animal

23、s on the MoveA) It looked like a scene from “Jaws“ but without the dramatic music. A huge shark was slowly swimming through the water, its tail swinging back and forth like the pendulum of a clock. Suddenly sensitive nerve ending in the sharks skin picked up vibrations of a struggling fish. The shar

24、k was immediately transformed into a deadly, efficient machine of death. With muscles taut, the shark knifed through the water at a rapid speed. In a flash the shark caught its victim, a large fish, in its powerful jaws. Then, jerking its head back and forth, the shark tore huge chunks of flesh from

25、 its victim and swallowed them. Soon the action was over.B) Moving to SurviveIn pursuing its prey, the shark demonstrated in a dramatic way the important role of movement, or locomotion, in animals. Like the shark, most animals use movement to find food. They also use locomotion to escape enemies, f

26、ind a mate, and explore new territories. The methods of locomotion include crawling, hopping, slithering, flying, swimming, or walking. Humans have the added advantage of using their various inventions to move about in just about any kind of environment. Automobiles, rockets, and submarines transpor

27、t humans from deep oceans to as far away as the moon. However, for other animals movement came about naturally through millions of years of evolution. One of the most successful examples of animal locomotion is that of the shark. Its ability to quickly zero in on its prey has always impressed scient

28、ists. But it took a detailed study by Duke University marine biologists S. A. Wainwright, F. Vosburgh, and J. H. Hebrank to find out how the sharks did it. In their study the scientists observed sharks swimming in a tank at Marine land in Saint Augustine, Fla. Movies were taken of the sharks movemen

29、ts and analyzed. Studies were also made of shark skin and muscle.C) Skin Is the KeyThe biologists discovered that the skin of the shark is the key to the animals high efficiency in swimming through the water. The skin contains many fibers that crisscross like the inside of a belted radial tire. The

30、fibers are called collagen fibers. These fibers can either store or release large amounts of energy depending on whether the fibers are relaxed or taut. When the fibers are stretched, energy is stored in them the way energy is stored in the string of a bow when pulled tight. When the energy is relea

31、sed, the fibers become relaxed.D) The Duke University biologists have found that the greatest stretching occurs where the shark bends its body while swimming. During the bodys back and forth motion, fibers along the outside part of the bending body stretch greatly. Much potential energy is stored in

32、 the fibers. This energy is released when the sharks body snaps back the other way. As energy is alternately stored and released on both sides of the animals body, the tail whips strongly back and forth. This whip-like action propels the animal through the water like a living bullet.E) Source of Ene

33、rgyWhat causes the fibers to store so much energy? In finding the answer the Duke University scientists learned that the sharks similarity to a belted radial tire doesnt stop with the skin. Just as a radial tire is inflated by pressure, so, too, is the area just under the sharks collagen “radials“.

34、Instead of air pressure, however, the pressure in the shark may be due to the force of the blood pressing on the collagen fibers.F) When the shark swims slowly, the pressure on the fibers is relatively low, and the shark is able to bend its body at sharp angles. The animal swims this way when lookin

35、g around for food or just swimming. However, when the shark detects an important food source, some fantastic involuntary changes take place. The pressure inside the animal may increase by 10 times. This pressure change greatly stretches the fibers, enabling much energy to be stored. This energy is t

36、hen transferred to the tail, and the shark is off. The rest of the story is predictable.G) Dolphin Has Speed RecordAnother fast marine animal is the dolphin. This seagoing mammal has been clocked at speeds of 32 kilometers (20 miles) an hour. Biologists studying the dolphin have discovered that, lik

37、e the shark, the animals efficient locomotion can be traced to its skin. A dolphins skin is made up in such a way that it offers very little resistance to the water flowing over it. Normally when a fish or other object moves slowly through the water, the water flows smoothly past the body. This smoo

38、th flow is known as laminar flow. However, at faster speeds the water becomes more turbulent along the moving fish. This turbulence muses friction and slows the fish down.H) In a dolphin the skin is so flexible that it bends and yields to the waviness of the water. The waves, in effect, become tucke

39、d into the skins folds. This allows the rest of the water to move smoothly by in a laminar flow. Where other animals would be slowed by turbulent water at rapid speeds, the dolphin can race through the water at record breaking speeds.I) Other Animals Less EfficientNot all animals move as efficiently

40、 as sharks and dolphins. Perhaps the greatest loser in locomotion efficiency is the slug. The slug, which looks like a snail without a shell, lays down a slimy trail over which it crawls. It uses so much energy producing the slimy mucus and crawling over it that a mouse traveling the same distance u

41、ses only one twelfth as much energy. J) Scientists say that because of the slugs inefficient use of energy, its lifestyle must be restricted. That is, the animals are forced to confine themselves to small areas for obtaining food and finding proper living conditions. Have humans ever been faced with

42、 this kind of problem?（分数：20.00）(1).A dolphins skin enables it to pass through with little resistance to the water flowing over it.（分数：2.00）填空项 1:_(2).A shark finds its prey by feeling the vibrations of a struggling prey.（分数：2.00）填空项 1:_(3).According to the scientists, when bending its body in swimm

43、ing, the shark stretches its collagen fibers to the greatest extent.（分数：2.00）填空项 1:_(4).Animals are restricted to small areas for obtaining food and finding proper living conditions.（分数：2.00）填空项 1:_(5).Automobiles, rockets, and submarines exemplify that human inventions enable us to travel in almost

44、 any kind of environment.（分数：2.00）填空项 1:_(6).Consuming the equal amount of energy as a slug does, a mouse can travel 12 times as long as a slug.（分数：2.00）填空项 1:_(7).Dolphin wouldnt be bothered by turbulent water at rapid speeds like other animals.（分数：2.00）填空项 1:_(8).One of the main reasons why sharks

45、 are such effective predators is their skin.（分数：2.00）填空项 1:_(9).Sharks are a notable example of fish that depend on locomotion to survive.（分数：2.00）填空项 1:_(10).The area just under the sharks collagen fibers is similar to a belted radial tire because it is also inflated by pressure.（分数：2.00）填空项 1:_11.Section C_Most of us are taught to pay attention to what is saidthe words. Words do provide us with some information, but meanings are derived from so many other sources that it would hinder our effectiveness as a partner to a relationship to rely t