职称英语理工类C级-15及答案解析.doc

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1、职称英语理工类 C 级-15 及答案解析(总分：100.00，做题时间：90 分钟)一、B第 1 部分：词汇选项/B(总题数：15，分数：15.00)1.We will take your recent illness into consideration when marking your exams.（分数：1.00）A.effectB.accountC.effortD.discount2.The economy continued to exhibit signs of decline in September.（分数：1.00）A.playB.showC.sendD.tell3.The

2、y agreed to modify their policy.（分数：1.00）A.clarifyB.defineC.changeD.develop4.He endured great pain before he finally expired.（分数：1.00）A.firedB.resignedC.diedD.retreated5.About one million Americans are diagnosed annually with skin cancer.（分数：1.00）A.every yearB.severelyC.activelyD.every month6.The gi

3、rl is gazing at herself in the mirror.（分数：1.00）A.smilingB.laughingC.shoutingD.staring7.The chairman proposed that we should stop the meeting.（分数：1.00）A.showedB.suggestedC.agreedD.believed8.Have you talked to her lately?（分数：1.00）A.lastlyB.finallyC.shortlyD.recently9.This table is strong and durable.（

4、分数：1.00）A.long-lastingB.extensiveC.far-reachingD.eternal10.Enormous sums of money have been spent on, space exploration.（分数：1.00）A.MuchB.LargeC.SmallD.Fixed11.There are a limited number of books on this subject in the library.（分数：1.00）A.smallB.totalC.goodD.great12.The policeman wrote down all the pa

5、rticulars of the accident.（分数：1.00）A.secretsB.detailsC.benefitsD.words13.Mary has blended the ingredients.（分数：1.00）A.madeB.mixedC.cookedD.eaten14.The dentist has decided to extract her bad tooth.（分数：1.00）A.take outB.break offC.push inD.dig up15.While we dont agree, we continue to be friends.（分数：1.00

6、）A.WhoeverB.WhereC.AlthoughD.Whatever二、B第 2 部分：阅读判断/B(总题数：1，分数：7.00)下面的短文后列出了 7 个句子，请根据短文的内容对每个句子做出判断：如果该句提的是正确信息，请选择 A：如果该句提的是错误信息，请选择 B：如果该句的信息文中没有提及，请选择 C。Computer MouseThe basic computer mouse is an amazingly clever invention with a relatively simple design that allows us to point at things on t

7、he computer and it is very productive. Think of all the things you can do with a mouse like selecting text for copying and pasting (涂), drawing, and even scrolling on the page with the newer mice with the wheel. Most of us use the computer mouse daily without stopping to think how it works until it

8、gets dirty and we have to learn how to clean it. We learn to point at things before we learn to speak, so the mouse is a very natural pointing device. Other computer pointing devices include light pens, graphics (图形) tablets and touch screens, but the mouse is still our workhorse.The computer mouse

9、was invented in 1964 by Douglas Englehart of Stanford University. As computer screens became more popular and arrow keys were used to move around a body of text, it became clear that a pointing device that allowed easier motion through the text and even selection of text would be very useful. The in

10、troduction of the mouse, with the Apple Lisa computer in 1983, really started the computer public on the road to relying on the mouse for routine (常规)computer tasks.How does the mouse work? We have to start at the bottom, so think upside down for now. It all starts with the mouse ball. As the mouse

11、ball in the bottom of the mouse rolls over the mouse pad, it presses against and turns two shafts (轴). The shafts are conneected to wheels with several small holes in them. The wheels have a pair of small electronic light-emitting devices called light-emitting diodes (LED) mounted on either side. On

12、e LED sends a light beam to the LED on the other side. As the wheels spin and a hole rotates by, the light beam gets through to the LED on the other side. But a moment later the light beam is blocked until the next hole is in place. The LED detects (发现) a changing pattern of light, converts the patt

13、ern into an electronic signal, and sends the signal (发信号) to the computer through wires in a cable that goes out the mouse body. This cable is the tail that helps give the mouse its name. The computer interprets the signal to tell it where to position the cursor on the computer screen.So far we have

14、 only discussed the basic computer mouse that most of you probably have or have used. One problem with this design is that the mouse gets dirty as the ball rolls over the surface and picks up dirt. Eventually you have to clean your mouse. The newer optical mice avoid this problem by having no moving

15、 parts.（分数：7.00）(1).Most computer users want to know how the computer mouse works.（分数：1.00）A.A. Right B.B. Wrong C.C. Not mentioned(2).According to the author, general computer users need not to know how the computer mouse was invented.（分数：1.00）A.A. Right B.B. Wrong C.C. Not mentioned(3).The compute

16、r mouse derives its name from the cable that goes out its body, which looks like the tail of a mouse.（分数：1.00）A.A. Right B.B. Wrong C.C. Not mentioned(4).The key components of a computer mouse are the two LEDs.（分数：1.00）A.A. Right B.B. Wrong C.C. Not mentioned(5).When an ordinary computer mouse gets

17、dirty, it has to be replaced with a new one.（分数：1.00）A.A. Right B.B. Wrong C.C. Not mentioned(6).The most durable computer mice on sale are the IBM ones.（分数：1.00）A.A. Right B.B. Wrong C.C. Not mentioned(7).The optical mouse is superior to the basic one in that the former has no moving parts.（分数：1.00

18、）A.A. Right B.B. Wrong C.C. Not mentioned三、B第 3 部分：概括大意与完成句子(总题数：2，分数：8.00)下面的短文后有 2 项测试任务：(1)第 2326 题要求从所给的 6 个选项中为第 36 段每段选择 1 个最佳标题：(2)第 2730 题要求从所给的 6 个选项中为每个句子确定 1 个最佳选项。More Than 8 Hours Sleep Too Much of a Good ThingAlthough the dangers of too little sleep are widely known, new research sugge

19、sts that people who sleep too much may also suffer the consequences.Investigators at the University of California in San Diego found that people who clock up 9 or 10 hours each weeknight appear to have more trouble falling and staying asleep, as well as a number of other sleep problems, than people

20、who sleep 8 hours a night. People who slept only 7 hours each night also said they had more trouble falling asleep and feeling refreshed after a nights sleep than 8-hour sleepers.These findings, which Dr. Daniel Kripke reported in the journal Psychosomatic Medicine, demonstrate that people who want

21、to get a good nights rest may not need to set aside more than 8 hours a night. He added that “it might be a good idea“ for people who sleep more than 8 hours each night to consider reducing the amount of time they spend in bed, but cautioned that more research is needed to confirm this.Previous stud

22、ies have shown the potential dangers of chronic shortages of sleep - for instance, one report demonstrated that people who habitually sleep less than 7 hours each night have a higher risk of dying within a fixed period than people who sleep more.For the current report, Kripke reviewed the responses

23、of 1,004 adults to sleep questionnaires, in which participants indicated how much they slept during the Week and whether they experienced any sleep problems. Sleep problems included waking in the middle of the night, arising early in the morning and being unable to fall back to sleep, and having fat

24、igue interfere with day-to-day functioning.Kripke found that people who slept between 9 and 10 hours each night were more likely to report experiencing each sleep problem than people who slept 8 hours. In an interview, Kripke noted that long sleepers may struggle to get rest at night simply because

25、they spend too much time in bed. As evidence, he added that one way to help insomnia is to spend less time in bed. “It stands to reason that if a person spends too long a time in bed, then theyll spend a higher percentage of time awake. “ he said.A. Keprikes Research ToolB. Dangers of Habitual Short

26、ages of SleepC. Criticism on Kripkes ReportD. A way of Overcoming InsomniaE. Sleep Problems of Long and Short SleepersF. Classification of Sleen Problems（分数：4.00）(1).Paragraph 2 _（分数：1.00）填空项 1:_(2).Paragraph 4 _（分数：1.00）填空项 1:_(3).Paragraph 5 _（分数：1.00）填空项 1:_(4).Paragraph 6 _（分数：1.00）填空项 1:_A. fal

27、l asleep again.B. become more energetic the following dayC. sleep less than 7 hoursD. confirm those serious consequencesE. suffer sleep problemsF. sleep more than 8 hours（分数：4.00）(1).To get a good nights rest, people may not need to _.（分数：1.00）填空项 1:_(2).Long sleepers are reported to be more likely

28、to _.（分数：1.00）填空项 1:_(3).One of the sleep problems is waking in the middle of the night, unable to _.（分数：1.00）填空项 1:_(4).One survey showed that people who habitually _ each night have a higher risk of dying.（分数：1.00）填空项 1:_四、B第 4 部分：阅读理解/B(总题数：3，分数：45.00)下面有 3 篇短文，每篇短文后有 5 道题。请根据短文内容，为每题确定 1 个最佳选项。B

29、第一篇/BElectric BackpackBackpacks (背包) are convenient. They can hold your books, your lunch, and a change of clothes, leaving your hands free to do other things. Someday, if you dont mind carrying a heavy load, your backpacks might also power your MP3 player, keep your cell phone running, and maybe ev

30、en light your way home.Lawrence C. Rome and his colleagues from the University of Pennsylvania in Philadelphia and the Marine Biological Laboratory in Woods Hole, Mass. , have invented a backpack that makes electricity from energy produced while its wearer walks. In military actions, search-and-resc

31、ue operations, and scientific field studies, people rely increasingly on cell phones, global positioning system (GPS) receivers, night-vision (夜视镜) goggles (护目镜), another battery powered devices to get around and do their work. The backpacks electricity-generating feature could dramatically reduce t

32、he amount o a wearers load now devoted to spare batteries (备用电池), report Rome and his colleagues in the Sept. 9 Science .The backpacks electricity-creating powers depend on springs used to hang a cloth pack from its metal frame. The frame sits against the wearers back, and the whole pack moves up an

33、d clown as the person walks. Agear mechanism converts vertical movements o the pack to rotary motions of an electrical generator, producing up to 7.4 watts.Unexpectedly, tests showed that wearers of the new backpack alter their gaits in response to the packs oscillations, so that they carry loads mo

34、re comfortably and with less effort than they do ordinary backpacks. Because of that surprising advantage, Rome plans to commercialize both electric and non-electric versions of the backpack.The backpack could be especially useful for soldiers, scientists, mountaineers, and emergency workers who typ

35、ically carry heavy backpacks. For the rest of us,power-generating backpacks could make it possible to walk, play video games, watch TV, and listen to music, all at the sametime. Electricity-generating packs arent on the market yet, but if you do get one eventually, just make sure to look both ways b

36、efore crossing thestreet !（分数：15.00）(1).Backpacks are convenient because（分数：3.00）A.they can be very large.B.they can hold as many things as you want to carry.C.your handsare freed to do other things.D.you do not have to carry things with you.(2).What is the most important feature of the backpack inv

37、ented by Lawrence C. Rome and his colleagues?（分数：3.00）A.It produces electricity for electronic devices while the wearer walks.B.It can be used as cell phones, GPS in the military actions or field studies.C.It is small and convenient.D.It is light and easy to carry.(3).The word “springs“ in Paragraph

38、 3 means（分数：3.00）A.a small stream of water flowing naturally from the earth.B.the season of the year, occurring between winter and summer.C.the act or an instance of jumping or leaping.D.a length of metal wound around, which returns to its original shape after being pushed.(4).According to Paragraph

39、 4, what does Rome plan to do?（分数：3.00）A.To make the backpack more comfortable for the wearer.B.To put the backpack on the market.C.To test the advantage of the backpack.D.To promote the backpack in a newspaper or on television.(5).What is implied in “if you do get one eventually, just make sure to

40、took both ways before crossing the street!“?（分数：3.00）A.You will be too excited to watch the traffic.B.Enjoying electronic devices while walking may invite traffic accidents.C.It is not possible for you to get such a backpack.D.It is wise of you to have such a backpack.B第二篇/BFlying the Hypert SkiesA

41、little airplane has given new meaning to the term “going hyper. “The Hyper-X recently broke the record for air-breathing jet planes when it traveled at a hypersonic speed of seven times the speed of sound. Thats about 5,000 miles per hour. At this speed, youd get around the world - flying along the

42、equator (赤道) - in less than 5 hours.The Hyper-X is an unmanned,experimental aircraft just 12 feet long. It achieves hypersonic (超音速的) speed using a special sort of engine known as a scramjet. It may sound like something from a comic book,but engineers have been experimenting with scramjets since the

43、 1960s.For an engine to burn fuel and produce energy, it needs oxygen. A jet engine, like those on passenger airplanes, gets oxygen from the air. A rocket engine typically goes faster but has to carry its own supply of oxygen. A scramjet (紧急刹车) engine goes as fast as a rocket, but it doesnt have to

44、carry its own oxygen supply. A scramjets special design allows it to obtain oxygen from the air that flows through the engine. And it does so without letting the fast-moving air put out the combustion (燃烧) flames. However, a scramjet engine works properly only at speeds greater than five times the s

45、peed of sound. A booster rocket carried the Hyper-X to an altitude of about 100,000 feet for its test flight. The aircrafts record-beating flight lasted just 11 seconds. Although the little planes self-powered flight lasted only 11 seconds, that brief journey on March 27 makes a major milestone on t

46、he way to a new breed of very fast airplanes, comments Werner J. A. Dahm of the University of Michigan in Ann Arbor. In the future, engineers predict, airplanes equipped with scramjet engines could transport cargo quickly and cheaply to the brink of space. Such hypersonic jets could potentially carr

47、y passengers anywhere in the world in just a few hours.Out of the three experimental Hyper-X aircrafts built for NASA, only one is now left. The agency has plans for another 11-second hypersonic flight, this time at 10 times the speed of the sound.（分数：15.00）(1).The Hyper-X broke the record because（分

48、数：3.00）A.it was the first air-breathing jet plane.B.it flew along the equator.C.it flew at speeds smaller than five times the speed of sound.D.it traveled at a supersonic speed.(2).What kind of an engine did the Hyper-X use?（分数：3.00）A.A jet engine that gets oxygen from the air.B.A scramjet engine th

49、at doesnt carry its own oxygen supply.C.A rocket engine that carries its own supply of oxygen.D.A jet engine that uses no oxygen.(3).What is NOT true about the scramjet engine?（分数：3.00）A.It goes slower than a rocket.B.It extracts oxygen from the air that flows through the engine.C.It works only at speeds greater than five times the speed of sound.D