2010年职称英语理工类阅读理解练习

1、2010年职称英语理工类阅读理解练习(1)Electric BackpackBackpacks 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 don't mind carrying a heavy load，your backpacks might also power your MP31player，keep your cell phone running，and

2、 maybe even light your way home.Lawrence C. Rome and his colleagues from the University of Pennsylvania in Philadelphia2 and the Marine Biological Laboratory in WoodsHole3，Mass.4，have invented a backpack that makes electricity from energy produced while its wearer walks. In military actions，search-a

3、nd-rescue operations，and scientific field studies，people rely increasingly on cellphones，global positioning system (GPS) 5 receivers，night-vision goggles，and other battery powered devices to get around and do their work. The backpackselectri city- generating feature could dramatically reduce the amo

4、unt of awearers load now devoted to spare batteries，report Rome and his colleagues in the Sept.9 Science6.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 and down as the pe

5、rson walks.Agear mechanism converts vertical movements of the pack to rotary motions of anelectrical generator，producing up to 7.4 watts.Unexpectedly，tests showedthat wearers of the new backpack alter their gaits in response to the packsoscillations，so that they carry loads more comfortably and with

6、 less effortthan they do ordinary backpacks. Because of that surprising advantage，Rome plans to commercialize both electric and non-electric versionsof the backpack.The backpack could be especially useful forsoldiers，scientists，mountaineers，and emergency workers who typically carryheavy backpacks.Fo

7、r the rest of us，power-generating backpacks could make itpossible 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 before crossing thestreet!词汇:backpack/5bA

8、kpAk/n.背包 watt/wCt /n.瓦(特)receiver/ri5si:vE(r)/n.接收机 gait/eit/n.步态，步法night-visiongoggle 夜视镜 oscillation/7Csi5leiFEn/n.摆动spring/spriN /n.弹簧 commercialize/kE5mE:FElaiz/v.商业化vertical/5vE:tikEl /adj.垂直的 mountaineer/7maunti5niE(r)/n.登山运动员rotary/5rEutEri /adj.旋转的练习：1. Backpacks are convenient becauseA the

9、y can be verylarge.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 withyou.2. What is the most important feature of the backpack invented byLawrence C.Romeand his colleagues?A It produces electricity forelectronic devices

10、 while the wearer walks.B It can be used as cellphones，GPS in the military actions or field studies.C It is small andconvenient.D It is light and easy to carry.3. The word "springs" inParagraph 3 meansA a small stream of water flowing naturally from theearth.B the season of the year，occurr

11、ing between winter and summer.C the act or an instance of jumping or leaping.D a length of metal woundaround，which returns to its original shape afterbeing pushed.4. According to Paragraph 4，what does Rome plan to do?A To make the backpackmore comfortable for the wearer.B To put the backpack on the

12、market.C To test the advantage of the backpack.D To promote the backpack in anewspaper or on television.5. What is implied in “if you do get oneeventually，just make sure to took bothways before crossing the street!”?A You will be too excited to watch the traffic.B Enjoyingelectronic devices while wa

13、lking may invite traffic accidents.C It is notpossible for you to get such a backpack.D It is wise of you to have such abackpack.答案与题解：1.C第一段告诉我们，因为背包可以装许多东西，所以可以将双手解放出来做其他事情：tofree your hands to do other things。2.A第二段的第一句说，Lawrence C.Rome及其同事们发明的这种背包，当背着背包走路时，会有电能产生;该段最后一句告诉我们，背包的这种性能可减少背包的重量，因为不必携

14、带备用电池。3.D “springs"在此是弹簧的意思。spring是一个多义词：泉水(A)、春天(B)、弹跳(C)。4.B 第四段最后一句的意思是：Rome计划将这种背包商业化，即推向市场。A、C、D在文中均未提到。D的意思是为背包做广告。5.B这个句子的字面意思是：如果你终于得到这样的背包，过马路时一定要两面都看看。也就是说，不要因为同时玩着游戏，听着音乐、看着电视，太专注以致不注意来往车辆了2010年职称英语理工类阅读理解练习(2)Flying the Hypert1 SkiesA little airplane has given new meaning to the ter

15、m “going hyper.”The Hyper-X2 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 equator in less than 5 hours.The Hyper-X is an unmann

16、ed，experimental aircraft just 12 feet long. It achieves hypersonic speed using a special sort of engine known as a scramjet3.It may sound like something from a comic book，but engineers have been experimenting with scramjets since the 1960s.For an engine to burn fuel and produce energy，it needs oxyge

17、n.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 engine goes as fast as a rocket，but it doesnt have to carry its own oxygen supply.A scramjet's special design allows it to obtain o

18、xygen from the air that flows through the engine.And it does so without letting the fast-moving air put out the combustion flames. However，a scramjet engine works properly only at speeds greater than five times the speed of sound.A booster rocket carried the Hyper-X to an altitude of about 100,000 f

19、eet 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 the way to a new breed of very fast airplanes，comments Werner J.A.Dahm of the University

20、of Michigan in Ann Arbor4.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 carry passengers anywhere in the world in just a few hours.Out of the three experimental Hyper-X

21、aircrafts built for NASA5，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.词汇hypersonic/7haipE(:)5sCnik/adj.超音速的 booster/ 5bu:stE/n.助推器equator/i5kweitE(r)/ n.赤道milestone/5mailstEun/n.里程碑unmanned/Qn5mAnd/adj.无人的 booster roc

22、ket 助推火箭scramjet/5skrAmdVet/n.超音速燃烧冲压式， cargo/5kB:Eu/n.货物喷气发动机combustion/kEm5bQstFEn/n.燃烧 brink/briNk/n.边缘练习：1. The Hyper-X broke the record becauseA 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

23、 supersonic speed.2. What kind of an engine did the Hyper-X use?A A jet engine that gets oxygen from the air.B A scramjet engine that doesnt carry its own oxygen supply.C A rocket engine that carries its own supply of oxygen.D A iet engine that uses no oxygen.3. What is NOT true about the scramjet e

24、ngine?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 It doesnt carry its own oxygen supply.4. What did Werner J.A.Dahm of the University of Michigan say about the Hyper-X test fligh

25、t?A It indicated the birth of a very fast airplane.B It was self-powered，so it lasted only 11 seconds.C It can transportcargo quickly and cheaply to the brink of space.D It is a major milestone in the journey of making a new type of very fast airplanes,5. What has NASA planned to do?A To make anothe

26、r 11-second hypersonic flight at 10 times the speed of the sound.B To make three more Hyper-X experiments.C To retest the aircraft that is left.D To make the aircraft fly higher and longer.答案与题解：1. C Hyper-X之所以打破纪录是因为它的飞行速度是音速的7倍。它不是第一架空气喷气式飞机，也不是第一架超音速飞机，所以A和D都不对。Hyper-X的试飞并未绕赤道飞行，所以B也是错误的选择。2. B 第

27、四段讲了三种发动机的氧气来源：喷气式发动机是从空气中汲取氧气，火箭发动机必须自携氧气，而超音速冲压喷气发动机则不必白携氧气，而这正是Hyper-X使用的发动机装置。3. A 根据第五段内容，B、C、D都是正确的说法。第四段最后一句告诉我们，A的说法是不正确的。4. D 文章的第六段中，密歇根大学的研究人员Werner J.A.Dahm说，Hyper-X的试飞成功只是研制一种新式快速飞机过程中的一个里程碑(a major milestone on the way to a new breed of very fast airplanes)，而不是新型飞机的诞生。所以，D是正确选择，A是错误选择。

28、B也不是Werner J.A.Dahm想要表达的意思。C是其他下程师而不是Werner J.A.Dahm说的话。5. A 答案可在最后一段找到2010年职称英语理工类阅读理解练习(3)Sugar Power for Cell PhonesUsing enzymes commonly found in living cells，a new type of fuel cell produces small amounts of electricity from sugar.If the technology is able to succeed in mass production，you may

29、 some day share your sweet drinks with your cell phone.In fuel cells，chemical reactions generate electrical currents.The process usually relies on precious metals，such as platinum.In living cells，enzymes perform a similar job，breaking down sugars to obtain electrons and produce energy.When researche

30、rs previously used enzymes in fuel cells，they had trouble keeping them active，says Shelley D.Minteer of St Louis University1.Whereas biological cells continually produce fresh enzymes，theres no mechanism in fuel cells to replace enzymes as they quickly degrade.Minteer and Tamara Klotzbach，also of St

31、 Louis University，have now developed polymers that wrap around an enzyme and preserve it in a microscopic pocket.“We tailor these pockets to provide the ideal microenvironment” for the enzyme，Minteer says.The polymers keep the enzyme active for months instead of days.In the new fuel Cell，tiny polyme

32、r bags of enzyme are embedded in a membrane that coats one of the electrodes.When glucose from a sugary liquid gets into a pocket，the enzyme oxidizes it，releasing electrons and protons.The electrons cross the membrane and enter a wire through which they travel to the other electrode，where they react

33、 with.oxygen in the atmosphere to produce water.The flow of electrons through the wire constitutes an electrical current that can generate power.So far，the new fuel cells dont produce much power，but the fact that they work at all is exciting，says Paul Kenis，a chemical engineer at the University of I

34、llinois2 at Urhana-Champaign3.“Just getting it to work.” Kenis says，“is a major accomplishment.”Sugar-eating fuel cells could be an efficient way to make electricity.Sugar is easy to find. And the new fuel cells that run on it are biodegradable，so the technology wouldnt hurt the environment.The scie

35、ntists are now trying to use different enzymes that will get more power from sugar.They predict that popular products may be using the new technology in as little as 3 years.词汇：enzyme/5enzaIm/n.酶 electrode/I5lektrEJd/n.电极platinum/5plAtinEm/n.铂，白金 membrane/5membrein/n.膜，薄膜electron/I5lektrRn/n.电子 oxid

36、ize/5Cksi7daiz/v.氧化degrade/di5reid/v.降解 glucose/5lu:kEus/n.葡萄糖polymer/5pClimE/n.聚合物 biodegradable/7baiEudi5reidEbl/adj.能进行生物降解的microenvironment n.微环境 embed/im5bed/v.埋置，插入proton/5prEutCn/n.质子试题1. According to the first paragraph，when can we share our sweet drinks with our cell phones?A When enzymes c

37、an be commonly found in living ceils.B When the technology of producing a new type of fuel cell appears.C When the technology of a new type of fuel cell is suitable for mass production.D When the technology of mass producing cell phones appears.2. What trouble did Minteer and Klotzhach have in their

38、 research?A They had trouble keeping enzymes in fuel cells active.B They had trouble keeping biological cells active.C They had trouble producing fresh enzymes.D They had trouble finding mechanism for producing enzymes.3. According to Paragraph 5，electrons are releasedA when bags of enzyme are embed

39、ded in the new fuel cell.B when glucose from a sugary liquid goes through the enzyme.C when the enzyme oxidizes the glucose from a sugary liquid that goes through a pocket.D when the enzyme oxidizes the sugary liquid that goes through a pocket.4. What is exciting about the new fuel cells?A Their lim

40、itless power generation capacity is amazing.B Their limited power generation capacity is a good beginning.C Their limited power generation capacity is the result of great efforts.D Their limitless power generation capacity is a major accomplishment,5. According to the last paragraph，what is NOT true

41、 of the new fuel cells?A The new fuel cells run on sugar that is easy to find.B The new fuel cells are environment friendly.C The new fuel cells are biologically degradable,D It will take some time before the new fuel cells can be used in popular products.答案与题解：1. C A和D明显不是正确答案。B不是正确选择，因为只有当这种新的燃料电池

42、被大规模生产时，才有可能实现用甜饮料给手机提供电能。2. A 文章第三段的第一句是问题的答案。3. C 该段第二句“When glucose from a sugary liquid penetrates a pocket，the enzyme oxidizes it，releasing electrons and proton”中的it指代glucose，而不是a sugary liquid，因 此C是正确选择。4. B 第六段的大意是，尽管这种新型燃料电池还不能产牛很多电能，但是，它能够产生电能的事实就已经是很大的成就了。因而激动人心。所以只有B是正确答案。5. D 文章的最后一段指出了这

43、种新型燃料电池的优点，即A、B、C所述内容。最后一句说，科学家预计，在不到三年的时间里这种新技术便可在大众的流行产品中使用。所以D是正确选择 帖子2830 精华8 积分11141 经验7994 点 威望0 点 大家网点券7678 点 购课积分0 注册时间2009-2-23 查看详细资料 2010年职称英语理工类阅读理解练习(4)Invisibility RingScientists cant yet make an invisibility cloak1 like the one that Harry Potter2 uses.But，for the first time，theyve con

44、structed a simple cloaking device that makes itself and somethingplaced inside it invisible to microwaves.When a person “sees” an object，his or her eye senses many different waves of visiblelight as they bounce off the object.The eye and brain then work together to organize thesesensations and recon

45、struct the objects original shape. So，to make an object invisible，scientists have to keep waves from bouncing off it.And they have to make sure the objectcasts no shadow.Otherwise，the absence of reflected light on one side would give the obiectaway.Invisibility isnt possible yet with waves of light

46、that the human eye can see.But it is nowpossible with microwaves.Like visible light，microwaves are a form of radiant energy.Theyare part of the electromagnetic spectrum，which also includes radio waves，infrared light，ultraviolet rays，X rays，and gamma rays.The wavelengths of microwaves are shorter tha

47、nthose of radio waves but longer than those of visible light.The scientists new “invisibility device” is the size of a drink coaster and shaped like aring.The ring is made of a special material with unusual ability.When microwaves strike thering，very few bounce off it.Instead，they pass through the r

48、ing，which bends the waves allthe way around until they reach the opposite side.The waves then return to their originalpaths.To a detector set up to receive microwaves on the other side of the ring，it looks as if thewaves never changed their paths as if there were no object in the way! So，the ring is

49、 effectively invisible.When the researchers put a small cdpper loop inside the ring，it，too，is nearly invisible. However，the cloaking device and anything inside it do cast a pale shadow.And the deviceworks only for microwaves，not for visible light or any kind of electromagnetic radiation.So，Harry Pot

50、ters invisibility cloak doesnt have any real competition yet.词汇：invisibility/invizE5biliti/n.看不见，无形 spectrum/5spektrEm/n.光谱cloak/klEuk/斗篷，披风 infrared/5infrE5red/adj.红外线的microwave/5maikrEuweiv/n.微波 ultraviolet ray 紫外线reconstruct/5ri:kEn5strQkt/v.重建 gamma ray 伽马射线radiant/5reidjEnt/adj.辐射的 wavelength/5

51、weivleNW/n.波长electromagnetic/IlektrEJ5mAnItIk/adj.电磁的coaster/5kEustE(r)/n.托盘，垫子练习：1.Harry Potter is mentioned in the passage，because scientistsAcan now make an invisible cloak of the same kind as he uses.Btry to make an invisible cloak of the same kind as he uses.Ctry to invent a device Similar in i

52、dea to the invisible cloak he uses.Dknow that it is possible to make an invisible cloak of the same kind.2.What is true of microwaves?ATheir wavelengths are shorter than those of visible light.BTheir wavelengths are longer than those of visible light.CThey are different from visible light as they ar

53、e a kind of radiant energy.DThey are visible to the human eye.3.What is NOT true of the invisibility device?AIt is made of a special material with unusual ability.BMicrowaves bounce off it when they strike it.CMicrowaves pass through it when they strike it.DIt bends the microwaves all the way around

54、 until they reach the oppositeside.4.What does the word “coaster” mean in the passage?AA disk or plate placed under a drinking glass to protect a table top.BA vessel engaged in coastal trade.CA roller coaster.DA resident of a coastal area.5.Harry Potters invisibility cloak doesnt have any real compe

55、tition yet，becauseAscientists have not found out how his cloak works.Bthe cloaking device is a total failure.Cthe cloaking device works only for microwaves.Dthe cloaking device works only for visible light.答案与题解：1.C文章的第一段告诉我们，科学家还没有发明哈里·波特使用的那种隐身衣，所以不能选 A;该段还告诉我们，科学家已制造了，一种装置，这种装置能使自身或置于其中的物体不被

56、微波发现，所以C是正确选择，也就是说，科学家发明的隐形装置和哈里波特的隐身衣仅仅在概念上相同，这同时说明B和D是错误的选择。2.B第三段最后一句中告诉我们，A是错误选择，B是正确选择。该段第三句说，微波与可见光一样都是一种辐射能，所以C的说法是错误的，不能选择;根据该段第一句：with wavesof light that the human eye can see和第三句：Like visible light，可以得知D是错误的说法，也不能选择。3.B第四段第三句说，当微波到达装置表面时，very few bounce off。very few是几乎没有的意思，所以选择B。其他选择所述内容都

57、可以很容易在该段中找到。4.A第四段第一句告诉我们，科学家的这个隐形装置和一个杯垫差不多大小，所以A是正确选择。coaster是一个多义词，其他几个选择是该词的其他意思，B：从事沿海贸易的船;C：过山车，摩天轮;D：海岸地区居民。5.CA句在短文中没有提到;按文章的内容B不是正确的说法;文章最后一段说，And thedevice works only for microwaves，not forvisible light，所以C是正确选择2010年职称英语理工类阅读理解练习(5)Japanese Car Keeps Watch for Drunk DriversA concept car developed by Japanese company Nissan1 has a breathalyzer-like detection system and other instruments that could help keep drunk or over tired drivers off the road.T