2020年职称英语考试理工类阅读理解(5)
2020年职称英语考试理工类练习题:阅读理解
2020年职称英语考试理工类练习题:阅读理解Life expectancy rates in the United States are al an all-time high, with people born in2005 projected to live for nearly 78 years, a new federal study finds.The finding reflects a continuing trend of increasinglife expectancy that began in l955, when the average American lived to be 69.6 years old. By l995, lire expectancy was 75.8 years and by 2006, it had risen to 77. 9 years, according to the report released Wednesday."This is good news," said report co-author Donna Hoyert, a health scientist at the national Center for Health Statistics. "It's even better news that it is a continuation of trends, so it is a long period of continuing improvement."Despite the upward trend, the United States still has lower lire expectancy than some 40 other countries, according to the U. S. Census (人口普查) Bureau. The country with the longest lire expectancy is Andorra at 83.5 years, followed by Japan, Macau, San Marino and Singapore.Much of the increase owes to declining death rates from the three leading causes of death in the country-heart disease, cancer and stroke.In addition, in 2005, the U. S. death rate dropped to an all-time low of less than 800 deaths per l00, 000.Dr. David Katz, director of the Prevention Research Center at Yale University School Medicine. Said, "News thatlire expectancy is increasing is, of course, good. But the evidence we have suggests that there is more chronic disease than ever in the U. S."Adding years to life is a good thing, Katz said. "But adding vital life to years is at least equally important. If we care about living well, and not just longer, we still have our work cut out for us." he said.1 Since l 955, lire expectancy rates in the U. S. haveA moved up and down.B been declining.C remained steady.D been on the rise.2 Compared with the country with the longest lire expectancy, the U. S. isA nearly 3 years behind.B nearly 4 years behind.C nearly 6 years behind.D nearly 8 years behind.3 The increase In the U. S. lire expectancy is mostly due toA declining death rates from heart disease, cancer and stroke.B increasing lire expectancy rates in some other countries.C a rise in the rate of chronic disease.D a declining birth rate.4 Which of the following statements is NOT true?A The U. S. 1ife expectancy is at an all-time high.B The U. S. death rate was at an all-time low in 2005.C Chronic disease appears to be at an all-time high in the U. S.D The annual death rate in the U. S. is over 800 deaths per l00, 000.5 The expression "adding vital to years" in the last paragraph meansA living longerB living well.C living longer and wellD living at any cost.答案:1. D 2. C 3. A 4. D 5. B。
2020年职称英语理工类B级真题及答案
2020年职称英语理工类B级真题及答案第1部分:词汇选项(第1~15题,每题1分,共15分)1.There was something peculiar in the way he smiles.A.different B.wrong C.strange D.funny2.I have little information as regards her fitness for the post.A.at B.with C.about D.from3.She came across three children sleeping under a bridge.A.found by chance B.passed by C.took a notice of D.woke up4.The rules are too rigid to allow for humane error.A.general B.complex C.direct D.inflexible5.It seems incredible that he had been there a week already.A.unbelievable B.right C.obvious D.unclear6.She gets aggressive when she is drunk.A.worried B.sleepy C.anxious D.offensive7.Rumors began to circulate about his financial problems.A.send B.hear C.spread D.confirm8.As a politician, he knows how to manipulate public opinion.A.express B.influence C.divide D.voice9.These animals migrate south annually in search of food.A.explore B.travel C.inhabit D.prefer10.He was tempted by the high salary offered by the company.A.taught B.kept C.changed D.attracted11.The police will need to keep a wary eye on this area of town.A.cautious B.naked C.blind D.private12.Make sure the table is securely anchored.A.repaired B.cleared C.booked D.fixed13.Come out, or I’ll bust the door down.A.shut B.break C.set D.beat14.The contract between the two companies will expire soon.A.shorten B.start C.end D.resume15.He paused, waiting for her to digest the information.A.understand B.withhold C.exchange D.contact第2部分:阅读判断(第16~22题,每题1分,共7分)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;如果该句提供的是准确信息,请选择A;如果该句提供的是错误信息,请选择B;如果该句的信息文中没有提及,请选择C。
2020年职称英语理工类考试试题库:阅读理解
2020年职称英语理工类考试试题库:阅读理解1.2 million road deaths worldwide occur each year,plus a further 50 million injuries.To reduce car crash rate,much research now is focused on safety and new fuels-though some electric vehicle and biofuel research aims at going faster.Travelling at speed has always been dangerous.One advanced area of research in motoring safety is the use of digital in-car assistants.They can ensure you don't miss important road signs or fall asleep.Most crashes result from human and not mechanical faults.Some safety developments aim to improve your vision.Radar can spot obstacles in fog,while other technology“sees through”big vehicles blocking your view.And improvements to seat belts,pedal(脚踏)controls and tyres are making driving smoother and safer.The colour of a car has been found to be linked with safety,as have,less surprisingly,size and shape.But whatever is in the fuel tank,you don't want a thiefin the driving seat and there have been many innovations(创新)。
2020职称英语理工类A真题及答案.doc
2020 职称英语理工类 A 真题及答案第1 部分:词汇选项( 第1~15 题,每题 1 分,共15 分)下面每个句子中均有 1 个词或短语划有底横线,请为每处划线部分确定1 个意义最为接近的选项。
1. I will not tolerate that sort of behavior in my class.A. controlB. observeC. regulateD. accept2. She showed a natural aptitude for the work.A. senseB. talentC. flavorD. taste3. Most people find rejection hard to accept.A. excuseB. clientC. refusalD. destiny4. The organization was bold enough to face the press.A. pleasedB. powerfulC. braveD. sensible5. They were locked in mortal combat.A. deadlyB. openC. actualD. active6. We were attracted by the lure of quick money.A. amountB. supplyC. temptD. sum7. The procedures were perceived as complex and less transparent.A. clearB. necessaryC. specialD. correct8. The Stock Exchange is in turmoil following a huge wave of selling.A. ServiceB. dangerC. disorderD. threat9. He believes that Europe must change or it will perish.A. surviveB. lastC. dieD. move10. There was a simultaneous trial taking place in the next build.A. fairB. full C .coexisting D. public11. They promote assimilation of ethnic groups into the main-stream culture.A. policyB. value C .equality D. integration12. A salesman ’s cardinal rule is to satisfy customers.A. principalB. officialC. simpleD. legal13. I must compliment you on your handling of a very difficult situationA. silenceB. praise C .assure D. complain14. We lived for years in a perpetual state of fearA. emotionalB. nervousC. terribleD. Continuous15. The starving children were a pathetic sight.A. commonB. unexpectedC. unforgettableD. pitiful第2 部分:阅读判断( 第1 6~22 题,每题l 分,共7 分)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:如果该句提供的是准确信息,请选择A;如果该句提供的是错误信息,请选择B;如果该句的信息文中没有提及,请选择C。
2020年职称英语理工类模拟试题及答案:阅读理解
2020年职称英语理工类模拟试题及答案:阅读理解2020年职称英语理工类模拟试题及答案:阅读理解短文后有5道题,每题后面有4个选项。
请仔细阅读短文并根据短文回答其后面的问题,从4个选项中选择1个答案涂在答题卡相对应的位置上。
Newspapers often tell us of floods in some parts of the United States.Nearly every year on the great central drainages heavy rains and melting snow cause the waters to pour out the mountains and plains, to turn brooks into torrents, and to swell quiet streams into wild uncontrolled rivers. From Cairo to New Orleans, and from Pittsburgh to Paducah, the cry "River rising!" is a familiar yet fearful voice. . . When the rivers sometimes become too high or too swift to becontrolled communities are flooded, families flee from their homes, croplands are washed out, and transportation comes to a halt. Hunger, disease, and death follow the wild waters.Although given less publicity, the agricultural damage done by the many smaller, more frequent floods usually far exceeds the losses caused by the very grand ones. In the Central States, ditches and drains cause the flows from spring rains and melting snow to run far more rapidly than in the days before white men settled on the land. Once, excess spring flood waters emptied into lakes and swampy lands, there to be detained for slow release into stream and rivers. Now, systematic drainage has actually eliminated thesenatural reservoirs.In the more rolling sections of the East, spring runoff was formerly absorbed and held temporarily in the poroussoils beneath the unbroken expanse of forest. When large areas were converted to farm use, removal of the forest and the practice of up-and-down hill plowing deprived the soils of much of their ability to catch and store water.The effects of eliminating the natural forest cover are shown in the gullied farm lands and widened stream channels found in some densely settled areas. Partly because the stream channels are more or less filled with material washed down from the uplands, and partly because storm runoff has increased, the channels are today no longer able to carry all the flow from heavy rains. This explains why the streams overtop banks far more often than in the days before settlement.31. The best title for the selection would be______.A. River Rising! River Rising!B. Forests and FloodsC. Flooding in the U. S.D. The Results of Flooding32. All of the following cause floods EXCEPT______.A. heavy rainB. melting snowC. increasing storm runoffD. porous soil33. The author states that______.A. lakes and swamps once acted like natural reservoirsB. up-and-down hill plowing catches and stores waterC. stream channels are the best carriers of waterD. floods are easily prevented and controlled34. According to the selection, streams overtop their banks partly because______.A. material from higher land is washed into themB. ditches and drains lead into themC. rivers become too swiftD. snow melts more rapidly nowadays35. The floods which are given most publicity______.A. cause no damageB. cause the most damageC. cause less agricultural damage than the many smaller, more frequent floodsD. far exceed the smaller, more frequent floods in agricultural lossMobile Phone and DiseasesA study by scientists in Finland has found that mobile phone radiation can cause changes in human cells that might affect the brain, the leader of the research team said.But Darius Leszczynski, who headed the 2-year study and will present findings next week at a conference in Quebec(魁北克), said more research was needed to determine the seriousness of the changes and their impact on the brain or the body.The study at Finland's Radiation and Nuclear Safety Authority found that exposure to radiation from mobile phones can cause increased activity in hundreds of proteins in human cells grown in a laboratory, he said.“We know that there is some biological response. We can detect it with our very sensitive approaches, but we do not know whether it can have any physiological effects on the human brain or human body,” Leszczynski said.Nonetheless the study, the initial findings of which were published last month in the scientific journal Differentiation, raises new questions about whether mobile phone radiation can weaken the brain's protective shield against harmful substances.The study focused on changes in cells that line blood vessels and on whether such changes could weaken the functioning of the blood-brain barrier, which prevents potentially harmful substances from entering the brain from the bloodstream, Leszczynski said.The study found that a protein called hsp27 linked to the functioning of the blood-brain barrier showed increased activity due to irradiation and pointed to a possibility that such activity could make the shield more permeable(能透过的), he said.“Increased protein activity might cause cells to shrink—not the blood vessels but the cells themselves—and then tiny gaps could appear between those cells through which some molecules could pass. ” he said.Leszczynski declined to speculate on what kind of health risks that could pose, but said a French study indicated that headache, fatigue and sleep disorders could result.“These are not life-threatening problems but can cause a lot of discomfort,” he said, ad ding that a Swedish group had also suggested a possible link with Alzheimer's disease.“Where the truth is do not know,” he said.Leszczynski said that he, his wife and children use mobile phones, and he said that he did not think his study suggested any need for new restrictions on mobile phone use.36 According to Leszczynski, how does mobile phoneaffect one's health? _________A Mobile phone radiation can increase protein activities and such activities can make the protective shield more permeable.B Mobile phone radiation can shrink the blood vessels and prevent blood from flowing smoothly.C Mobile phone radiation will bring stress to people exposed to it.D Mobile phone radiation kills blood cells at a rapid speed.37 What's the result of the French study? _________A The harm of mobile phone radiation is life-threatening.B Mobile phone may affect one's normal way of thinking.C Sleep disorders could result from mobile phone radiation.D A protein called hsp27 is killed by mobile phone radiation.38 What kind of disease is not caused by the use of mobile phone? _________A Fatigue.B Headache.C Alzheimer's disease.D Tuberculosis.39 According to the passage, what would be the future of the use of mobile phone? _________A People will be forbidden to use mobile phone.B People dare not use mobile phone because of its radiation.C People will continue to use mobile phone.D There will be new restrictions on the use of mobile phone.40 Which of the following is NOT true according to the passage? _________A The research in Finland found that mobile phone radiation will affect one's brain.B Mobile phone radiation can cause increased activity in hundreds of protein in human cells.C Increased protein activity might cause cells to shrink.D Lszczynski forbid his wife and children to use mobile phone after his research.Electronic Mail (E-mail)During the past few years, scientists the world over have suddenly found themselves productively engaged in task they once spent their lives avoiding-writing, any kind of writing, but particularly letter writing. Encouraged by electronicmail's surprisingly high speed, convenience and economy, people who never before touched the stuff are regularly, skillfully, even cheerfully tapping out a great deal of correspondence.Electronic networks, woven into the fabric of scientific communication these days, are the route to colleagues in distant countries, shared data, bulletin boards andelectronic journals. Anyone with a personal computer, a modem and the software to link computers over telephone lines can sign on. An estimated five million scientists have done so with more joining every day, most of them communicating through a bundle of interconnected domestic and foreignroutes known collectively as the Internet, or net.E-mail is starting to edge out the fax, the telephone, overnight mail, and of course, land mail. It shrinks time anddistance between scientific collaborators, in part because it is conveniently asynchronous (writers can type while their colleagues across time zones sleep; their message will be waiting). If it is not yet speeding discoveries, it is certainly accelerating communication.Jeremy Bernstei, the physicist and science writer, once called E-mail the physicist's umbilical cord. Lately other people, too, have been discovering its connective virtues. Physicists are using it; college students are using it, everybody is using it, and as a sign that it has come of age, the New Yorker has celebrated its liberating presence with a cartoon-an appreciative dog seated at a keyboard, saying happily, “On the Internet, nobody knows you're a dog.”41 The reasons given below about the popularity of E-mail can be found in the passage EXCEPT __________.A direct and reliableB time-saving in deliveryC money-savingD available at any time42 How is the Internet or net explained in the passage? __________A Electronic routes used to read home and international journals.B Electronic routes used to fax or correspond overnight.C Electronic routes waiting for correspondence while one is sleeping.D Electronic routes connected among millions of users, home and abroad.43 What does the sentence “If it is not yet speeding discoveries, it is certainly accelerating communication” most probably mean? __________A The quick speed of correspondence may have ill-effects on discoveries.B Although it does not speed up correspondence, it helps make discoveries.C It quickens mutual communication even if it does not accelerate discoveries.D It shrinks time for communication and accelerates discoveries.44 What does the sentence “On the Internet, nobody knows you're a dog.”imply in the last paragraph? __________A Even dogs are interested in the computer.B E-mail has become very popular.C Dogs are liberated from their usual duties.D E-mail deprives dogs of their owners' love.45 What will happen to fax, land mail, overnight mail, etc. according to the writer? __________A Their functions cannot be replaced by E-mail.B They will co-exist with E-mail for a long time.C Less and less people will use them.D They will play a supplementary function to E-mail.31. C 3 2. D 3 3. A 3 4. A 35. C36A 37C 38D 39C 40D41 A 42 D 43 C 44 B 45 C相关推荐:相关推荐:。
2020年职称英语考试真题理工类C(阅读理解)
2020年职称英语考试真题理工类C (阅读理解)第三部分:概况大意与完成句子New research lights the way to super-fast computers1) New research published today in the journal Nature Communications, has demonstrated how glass can be manipulated to create a material that will allow computers to transfer information using light. This development could significantly increase computer processing speeds and power in the future.2) The research by the University of Surrey, in collaboration with the University of Cambridge and the University of Southampton, has found it is possible to change the electronic properties of amorphous chalcogenides, a glass material integral to data technologies such as CDs and DVDs. By using a technique called ion doping, the team of researchers have discovered a material that could use light to bring together different computing functions into one component, leading to all-optical systems.3) Computers currently use electrons to transfer information and process applications. On the other hand, data sources such as the internet rely on optical systems; the transfer of information using light. Optical fibres are usedto send information around the world at the speed of light, but these signals then have to be converted to electrical signalsonce they reach a computer, causing a significant slowdown in processing.4) "The challenge is to find a single material that can effectively use and control light to carry information arounda computer. Much like how the web uses light to deliver information, we want to use light to both deliver and process computer data,"said project leader, Dr Richard Curry of the University of Surrey.5) "This has eluded researchers for decades, but now we have now shown how a widely used glass can be manipulated to conduct negative electrons, as well as positive charges, creating what are known as 'pn-junction' devices. This should enable the material to act as a light source, a light guide and a light detector - something that can carry and interpret optical information. In doing so, this could transform the computers of tomorrow, allowing them to effectively process information at much faster speeds."6) The researchers expect that the results of this research will be integrated into computers within ten years. In the short term, the glass is already being developed and used in next-generation computer memory technology known as CRAM, which may ultimately be integrated with the advances reported.23. ______________ Paragraph 224. ______________ Paragraph 325. ______________ Paragraph 426. ______________ Paragraph 5A. Expectation of the discoveryB. the problem of current computersC. A new findingD. The purpose of the researchE. Public reaction to the discoveryF. The use of the new material27. _____ The result of the research can help computers toincrease ____28. ________________________________________ Current computers transfer information using _________________29. ____________________ The new glass material makes it possible to fulfill different computing function30. Glass is used in the research to carry and processA. optical informationB. processing speedsC. electronsD. positive chargesE. data technologiesF. all-optical systemsWhy Buy Shade-Grown Coffee?When people argue about whether coffee is good for health, they're usually thinking of the health of the coffee drinker. Is it food for your heart? Does it increase blood pressure? Does it help you concentrate? However, coffee affects the health of the human population in other ways, too.。
2020年职称英语理工类阅读判断习题及答案:Stage Fright
2020年职称英语理工类阅读判断习题及答案:StageFrightStage FrightFall down as you come onstage. That's an oddtrick. Not recommended. But it saved the pianist Vladimir Feltsman when he wasa teenager back in Moscow. The veteran cellist Mstislav Rostropovich trippedhim purposely to cure him of pre-performance panic,2 Mr. Feltsmansaid," All my fright was gone.I already fell. What else could happen?"Today,music schools are addressing the problem ofanxietyin classes that deal with performance techniques and careerpreparation. There are a variety of strategies that musicians can learn tofight stage fright and its symptoms:icy fingers,shaky limbs,racing heart,blank mind.3Teachers and psychologists offer wide-rangingadvice,from basics like learning pieces inside out,4 tomentaldiscipline,such as visualizing a performance and taking steps to relax. Don'tdeny that you’re jittery,they urge;some excitement is natural,even necessary for dynamicplaying. And play in public often,simply for the experience.Psychotherapist Diane Nichols suggests somestrategies for the moments before performance,"Take two deep abdominalbreaths,open up your shoulders,then smile,'’ she says. "And not one of these'please don’t kill me' smiles. Then choose three friendly faces in theaudience,people you would communicate with and make music to,and make eyecontactwith them." She doesn’t want performers to think of the audience as ajudge.Extreme demands by mentors or parents are often atthe root of stage fright,says Dorothy Delay,a well-known violin teacher. She tells otherteachers to demand only what their students are able to achieve.When Lynn Harrell was 20,he became the principal cellist ofthe Cleverland Orchestra,and he suffered extreme stage fright. "There weretimes when I got so nervous I was sure the audience could see my chestresponding to the throbbing. It was just total panic. I came to a point where Ithought,' If I have to go through this to play music,I think I’m going to lookfor another job."5 Recovery,he said,involved developinghumility-recognizing that whatever his talent,he was fallible,and that an imperfect concert wasnot adisaster.6It is not only young artists who suffer,ofcourse. The legendary pianist Vladimir Horowitz's nerves were famous. The greattenor Franco Corelli is another example. "They had to push him on stage,"Soprano Renata Scotto recalled.Actually,success can make things worse. "In the beginning of your career,when you're scared to death,nobody knows who you are,and they don’t have anyexpectations," Soprano June Anderson said. "There's less to lose. Later on,wh enyou’re known,people are coming to see you,and they have certain expectations.You have a lot to lose."Anderson added,"I never stop being nervous until I've sung my last note."练习:1.Falling down onstage was not a good way forVladimir Feltsman to deal with his stage fright.A RightB WrongC Not mentioned2.There are many signs of stage fright.A RightB WrongC Not mentioned3.Teachers and psychologists cannot help peoplewith extreme -stage fright.A RightB WrongC Not mentioned4.To perform well on stage,you need to havesome feelings of excitement.A RightB WrongC Not mentioned5.If you have stage fright,it's helpful tohave friendly audience.A RightB WrongC Not mentioned6.Often people have stage fright becauseparents or teachers expect too much of them.A RightB WrongC Not mentioned7.Famous musicians never suffer from stagefright.A RightB WrongC Not mentioned答案与题解:1.B 本文第一段讲的是钢琴家Vladimir Feltsman被MstislavRostropovich绊倒后,他的舞台恐惧被治愈了的故事。
最新2020年职称英语理工类B级真题--优选及答案.doc
2020 年职称英语理工类 B 级真题及答案理工类 B 级阅读理解Can you hear This ?When something creates a sound wave in a room or an auditorium ( 礼堂 ) ,listeners hear the sound wave directlyfrom the source. They also hear the reflections as the sound bounces off the walls , floor ,and ceiling . These are calledthe reflected wave or reverberant ( 反射的 ) sound , which can be heard even after the sound is no longer coming from the source .The reverberation time of an auditorium is determined bythe volume or interior size of the auditorium .It is alsodetermined by how well or how poorly the walls , ceiling, floor ,and contents of the room (including the people ) absorb sound. There is no ideal reverberation time .The full-soundperformance of music such as Wagner operas or Mahler symphonies should have a long reverberation time . Thelight ,rapid musical passages of Bach or Mozart needa reverberation time somewhere between .Acoustic problems often are caused by poor auditoriumdesign .Smooth , curved (弯曲的)reflecting surfaces create large reflections . Parallel (平行的)walls reflect sound back and forth, creating a rapid ,repetitive pulsing(有节奏的跳动)effect. Large pillars (柱)and corners can cause acousticshadows as the sound waves try to pass around the object . Some of these problems can be solved by using absorbersand relectors to change the reverberation time of a room .For example , hanging large reflectors , called clouds , over the performers will allow some sound frequencies to reflect and others to pass yo achieve a pleasing mixture of sound.1.This Passage is mainly aboutA sound waves and their acoustic effect .B the types of music orchestras playC walls of an auditoriumD the design of an auditorium2.Wagner operas and Mahler symphonies sound fuller in an auditorium with~ 2 / 3 ~A a short reverberation timeB a long reverberation timeC an intermediate reverberation timeD no reverberation time3.This passage suggests that a good auditorium shouldA achieve a pleasing mixture of soundB get rid of all reflectionsC not have absorbers.D have smooth surfacesrge pillars and corners mayA make sound rich and fullB be cures for sound problemsC be sources of sound problemsD function as well as clouds5.The word “acoustic “in the last paragraph hassomething to do withA performanceB MusicC soundD noiseSmart WindowWindows not only let light in to cut down an electricityuse for lighting,but the light coming through the windowalso provides heat.However ,windows are not something people typically associate with being a cutting edge1technology.Researchers are now working on new technologies that enable a window to quickly change from clear to dark and anywherein between with a flip of a switch2.“It took us a long time to figure out what a windowreally is,” says Claes Granqvist.He's a professor of solid- state physics at Uppsala University in Sweden3.“It's contact with the outside world.You have to have visual contact withthe surrounding world to feel well.” So,windows and natural light are important for improving the way people feel whenthey're stuck indoors.Yet ,windows are the weak link in a building when itcomes to energy and temperature control.In the winter,cold air leaks in.When it's hot and sunny,sunlight streams in.Allof this sunlight carries lots of heat and energy.And all ofthis extra heat forces people to turn ontheir airconditioners.Producing blasts of cold air,which can feel so refreshing ,actually suck up enormous amounts of electricityin buildings around the world.Windows have been a major focus of energy research for along time. Over the years,scientists have come up with a variety of strategies for coating ,glazing ,and layering windowsto make them more energy efficient.Smart windows go a step further.They use chromogenic technologies which involvechanges of color.Electrochromic windows use electricity to changecolor.For example,a sheet of glass coated with thin layersof chemical compound such as tungsten oxide works a bit likea battery.Tungsten oxide is clear when an electric charge isapplied and dark when the charge is removed,that is,when the amount of voltage is decreased,the window darkens untilit's completely dark after all electricity is taken away.Soapplying a voltage determines whether the window looks clearor dark.One important feature that makes a smart window so smartis that it has a sort of “memory.” All it takes is a small jolt of voltage to turn the window from one state to theother.Then ,it stays that way.Transitions take anywhere from10 seconds to a few minutes,depending on the size of thewindow.The development of smart windows could mean thatmassive air conditioning systems may no longer need.“In the future,”Granqvist says, “our buildings may look different.”练习:1.Which of the following statements does not indicatethe importance of windows as described in the first twoparagraphs?A Windows can change from clear to dark to save energy.B Windows help to save energy by letting light in.C Windows help to save energy by providing heat.D Windows enable people to have contact with theoutside world.2. When are windows the weak link in a building?A In the cold winter.B In the hot summer.C When air conditioners are turned on.D Both A and B.3.What are smart windows ,according to Paragraph 4? AWindows that are coated.B Windows that are glazed.C Windows the color of which can be changed.D Windows that have many layers.4. To make electrochromic windows change color,what is applied to the window glass?A Electricity.B Tungsten oxide.C A battery.D A voltage.5. What will he the benefit if the research on smart windows turns out to be successful ,according to the last paragraph?A The buildings will look different.B Windows can be as large as you want.C We may not need air conditioners any more.D They are less expensive than traditional windows.词汇:flip n.& v.用手指轻弹,轻击tungsten oxide氧化钨air conditioner空调(器)jolt n.& v.震摇,颠簸,晃动refreshing adj.使人清爽的electrochromic adj.电致变色的glaze v.装玻璃,用玻璃覆盖voltage n.电压chromogenic adj.发色的air conditioning空调,空调系统注释:1.cutting edge :本意为“ ( 刀片的 ) 刃口,刀刃” ; 比喻意为“最先进的,科技含量的”。
2020职称英语考试理工类阅读理解模拟试题(1)
2020职称英语考试理工类阅读理解模拟试题(1)短文后有5道题,每道题后面有4个选项。
请仔细阅读短文并根据短文回答其后面的问题,从4个选项中选择1个答案涂在答题卡相对应的位置上。
Stress Level Tied to Education LevelPeople with less education suffer fewer stressful days, according to a report in the current issue of the Journal of Health and Social Behavior.However, the study also found that when 1ess-educated people did suffer stress it was more severe and had a larger impact on their health.From this, researchers have concluded that the day-to-day factors that cause stress are not random.Ⅵr11ere you are in society determines the kinds of problems that you have each day, and how well you will cope with them.The research team interviewed a national sample of 1.03 1 adults daily for eight days about their stress level and health.People without a high school diploma reported stress on 30 percent of the study days,people with a high school degree reported stress 38 percent of the time,and people with college degrees reported stress 44 percent of the time.‘Less advantaged people are less healthy on a daily basis and are more likely to have downward turns in their health。
2020年职称英语《理工C》阅读理解真题及答案
2020年职称英语《理工C》阅读理解真题及答案Can you hear This?When something creates a sound wave in a room or an auditorium, listeners hear the sound wave directly from the source. They also hear the reflections as the sound bounces off the walls, floor, and ceiling. These are called the reflected wave or reverberant(反射的)sound, which can be heard even after the sound is no longer coming from the source.The reverberation time of an auditorium is determined by the volume or interior size of the auditorium. It is also determined by how well or how poorly the walls, ceiling, floor, and contents of the room (including the people) absorb sound. There is no ideal reverberation time. Because each use of an auditorium calls for different reverberation. Speech needs to be understood clearly: therefore rooms used for talking must have a short reverberation time. The full-sound performance of music such as Wagner operas or Mahler symphonies should have a long reverberation time. The light, rapid musical passages of Bach or Mozart need a reverberation time somewhere between.Acoustic problems often are caused by poor auditorium design. Smooth, curved reflecting surfaces create large reflections. Parallel(平行的)walls reflect sound back and forth, creating a rapid, repetitive pulsing effect. Large pillars(柱)and corners can cause acoustic shadows as the sound waves try to pass around the object. Some of these problems can be solved by using absorbers and reflectors tochange the reverberation time of a room. For example, hanging large reflectors, called clouds, over the performers will allow some sound frequencies to reflect and others to pass to achieve a pleasing mixture of sound.31.【题干】This passage is mainly about_____A.sound waves and their effects.B.the types of music orchestras play.C.walls of an auditorium.D.the design of an auditorium.【答案】D【解析】32.【题干】Wagner operas and Mahler symphonies with full-sound effect have_____A.a short reverberation time.B.an intermediate reverberation time.C.no reverberation time.D.a long reverberation time.【答案】D【解析】33.【题干】This passage suggests that a good auditorium should_____A.get rid of all reflections.B.not have absorbers.C.achieve a pleasing mixture of sound.D.have smooth surfaces.【答案】D【解析】34.【题干】Large pillars and corners may_____A.make sound rich and full.B.be cures for sound problems.C.be sources of sound problems.D.function as effectively as clouds.【答案】C【解析】35.【题干】The word "acoustic" in the last paragraph has something to do with_____A.performance.B.sound.C.audience.D.weather.【答案】B【解析】。
2020年职称英语理工类B级真题及答案(完整版).doc
2020 年职称英语理工类 B 级真题及答案(完整版)第1 部分:词汇选项(第1——15 题,每题 1 分,共15 分)下面每个句子中均有 1 个词或者短语划有底横线,请为每处划线部分确定 1 个意义最为接近的选项。
1. The revelationof his past led to his resignation.A. imaginationB. disclosureC. confirmationD.recall答案为B. revelation( 揭露) –disclosure( 揭露)2. Jensenis a dangerous man, and can be very brutal.A. carelessB. cruelC. strongD.hard答案为B. brutal( 残忍的) –cruel3. You ’llhave to sprint if you want to catch the train.A. jumpB.escapeC. runD.prepare答案为C. sprint ( 快速奔跑) –run( 奔跑)4. We areworried about this fluid situation full withuncertainty.A. changeableB. stableC. suitableD.adaptable答案为A. fluid( 不稳定的) –changeable ( 易变的)5. Thenew garment fits her perfectly.A. haircutB.purseC. clothesD.necklace答案为C. garment( 衣服) –clothes( 衣服)6. Thephobia may have its root in a childhood trauma.A. fearB.joyC. hurtD.memory答案为C. trauma( 精神上的创伤)–hurt ( 感情上的伤心或痛苦)7. Theyhave to build canals to irrigate the desert.A. decorateB. waterC. changeD.visit答案为B. irrigate( 灌溉)–water(给⋯浇水)8. Heroverall language proficiency remains that of atoddler.A. disabledB.pupilC. teenagerD. baby答案为D. toddler( 学步的儿童) –baby (婴儿)9. Thecoastal area has very mild winter, but the centralplains remainextremely cold.A. warmB.severeC. hardD.dry答案为A. mild( 温暖的) –warm( 温暖的)10. Thedetails of the costume were totally authentic.A. realB. outstandingC. creativeD. false答案为A. authentic( 逼真的) –real ( 逼真的)11. Weare aware of the potential problems.A. globalB. possibleC. ongoingD.central答案为B. potential( 可能的)- possible( 可能的)12. Theidea was quite brilliant.A. positiveB. cleverC. keyD. original答案为B. brilliant( 绝妙的) –clever ( 聪明的)13. Stockmarket price tumbled after rumor of a rise ininterest rate.A. regulatedB. increasedC. maintainedD. fell答案为C. tumbled( 暴跌) –fell( 下降)14. Thecourse gives you basic instructions in car maintenance.A. coachingB. ideaC. termD. aspect答案为A. instructions ( 指导说明) —coaching (教导)15. Allhouses within 100 metres of the seas at risk offlooding.A. in dangerB. out of controlC. between equalsD. in particular答案为A indanger of (处于危险中)—at risk of (处于风险中)第2 部分:阅读判断(第 1 6——22 题,每题 1 分,共7 分)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;如果该句提供的是准确信息,请选择A;如果该句提供的是错误信息,请选择B;如果该句的信息文中没有提及,请选择C。
2020年职称英语考试《理工类》阅读理解训练题(1)
2020年职称英语考试《理工类》阅读理解训练题(1)Sugar Power for Cell PhonesUsing enzymes commonly found in living cells,a new typeof fuel cell produces small amounts of electricity fromsugar.If the technology is able to succeed in massproduction,you may 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,suchas platinum.In living cells,enzymes perform a similarjob,breaking down sugars to obtain electrons and produce energy.When researchers previously used enzymes in fuelcells,they had trouble keeping them active,says ShelleyD.Minteer of St Louis University1.Whereas biological cells continually produce fresh enzymes,there's no mechanism infuel cells to replace enzymes as they quickly degrade.Minteer and Tamara Klotzbach,also of St LouisUniversity,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 polymer 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 electronscross the membrane and enter a wire through which they travel to the other electrode,where they react 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 don't produce much power,but the fact that they work at all is exciting,says Paul Kenis,a chemical engineer at the University of Illinois2 at Urhana-Champaign3.“Just getting it to work.” Kenis says,“is a major accomplishme nt.”Sugar-eating fuel cells could be an efficient way to make electricity.Sugar is easy to find. And the new fuel cellsthat run on it are biodegradable,so the technology wouldn't hurt the environment.The scientists 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 oxidize/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.能实行生物降解的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 can be commonly found in living ceils.B When the technology of producing a new type of fuelcell 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 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 embedded in the new fuel cell.B when glucose from a sugary liquid goes through the enzyme.。
2020职称英语理工类A真题包括答案.doc
2020 职称英语理工类 A 真题及答案第 1 部分:词汇选项 ( 第 1~15 题,每题 1 分,共 15 分)下面每个句子中均有 1 个词或短语划有底横线,请为每处划线部分确定 1 个意义最为接近的选项。
1.I will not tolerate that sort of behavior in my class.A. controlB. observeC. regulateD. accept2.She showed a natural aptitude for the work.3.Most people find rejection hard to accept.A. excuseB. clientC. refusalD. destiny4.The organization was bold enough to face the press.A. pleasedB. powerfulC. braveD. sensible5.They were locked in mortal combat.A. deadlyB. openC. actualD. active6.We were attracted by the lure of quick money.A. amountB. supplyC. temptD. sum7.The procedures were perceived as complex and less transparent.8.The Stock Exchange is in turmoil following a huge wave of selling.9.He believes that Europe must change or it will perish.A. surviveB. lastC. dieD. move10.There was a simultaneous trial taking place in the next build.A. fairB. full C .coexisting D. public11.They promote assimilation of ethnic groups intothe main-stream culture.A. policyB. value C .equality D. integration12.A salesman ’s cardinal rule is to satisfy customers. A.principal B. official C. simple D. legal13.I must compliment you on your handling of a very difficult situation14.We lived for years in a perpetual state of fearA. emotionalB. nervousC. terribleD. Continuous15.The starving children were a pathetic sight.A. commonB. unexpectedC. unforgettableD. pitiful第 2 部分:阅读判断 ( 第 16~22 题,每题 l 分,共 7 分)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:如果该句提供的是准确信息,请选择 A; 如果该句提供的是错误信息,请选择 B; 如果该句的信息文中没有提及,请选择 C。
2020年职称英语考试理工类阅读理解习题5
2020年职称英语考试理工类阅读理解习题5The Development of BalletBallet is a dance form that has a long history.The fact that it survives to this day shows that it has adjusted as times have changed.Ballet began in the royal courts during the Renaissance.At that time it became common for kings and queens,as well as other nobility,to participate in pageants that included music,poetry,and dance.As these entertainments moved from the Italian courts to the French ones,court ladies began participating in them.Though their long dresses prevented much movement,they were able to perform elaborate walking patterns.It was not until the 1600s that women dancers shortened their skirts,changed to flat shoes,and began doing some of the leaps and turns performed by men.It was also in the 1600s that professional ballet began.King Louis XIV of France,himself a devoteddancer,founded the Royal Academy of Dance.The five basic feet positions from which all ballet steps begin were finalized.In the late 1700s another important change occurred.Ballet began to tell a story on its own.It was no longer simply dance to be performed between acts of plays.Elaborate wigs and costumes were eliminated.By the early 1800s dancers learned to rise on their toes to make it appear that they were floating.Classical ballet as we know it today was influenced primarily by Russian dancing.The Russians remained interested in ballet when it declined in other European countries in themid -1800s.One of the most influential figures of the early20th century was Sergei Diaghilev.His dance company,theBallets Russes,brought a new energy and excitement toballet.One of his chief assistants,George Balanchine,went onto found the New York City Ballet in 1948 and to influencenew generations of dancers.注释:1.At that time it became common for kings and queens,as well as other nobility,to participate in pageants thatincluded music,poetry,and dance.在那时,芭蕾舞在国王、王后以及贵族之间变得普遍,并且与音乐、诗歌以及舞蹈一起参与到盛会的表演。
2020年职称英语考试真题理工类A级阅读理解(文字版)
2020年职称英语考试真题理工类A级阅读理解(文字版)Older Volcanic EruptionsVolcanoes were more destructive in ancient history, not because they were bigger, but because the carbon dioxide they released wiped out life with greater ease.Paul Wignall from the University of Leeds wasinvestigating the link between volcanic eruptions and mass extinctions. Not all volcanic eruptions killed off large numbers of animals, but all the mass extinctions over thepast 300 million years coincided with huge formations of volcanic rock. To his surprise, the older the massivevolcanic eruptions were, the more damage they seemed to do.He calculated the "killing efficiency" for these volcanoes by comparing the proportion of life they killed off with the volume of lava that they produced. He found that size for size, older eruptions were at least 10 times as effective at wiping out life as their more recent rivals.The Permian extinction, for example, which happened 250 million years ago, is marked by floods of volcanic rock in Siberia that cover an area roughly the size of western Europe. Those volcanoes are thought to have pumped out about 10 gigatonnes of carbon as carbon dioxide. The global warmingthat followed wiped out 80 per cent of all marine genera atthe time, and it took 5 million years for the planet to recover. Yet 60 million years ago, there was another huge amount of volcanic activity and global warming but no massextinction. Some animals did disappear but things returned to normal within ten thousands of years. "The most recent ones hardly have an effect at all," Wignall says. He ignored the extinction which wiped out the dinosaurs 65 million years ago, because many scientists believe it was primarily caused bythe impact of an asteroid. He thinks that older volcanoes had more killing power because more recent life forms were better adapted to dealing with increased levels of CO2.Vincent Courtillot, director of the Paris Geophysical. Institute in France, says that Wignall’s idea is prov ocative. But he says it is incredibly hard to do these sorts of calculations. He points out that the killing power ofvolcanic eruptions depends on how long they lasted. And it is impossible to tell whether the huge blasts lasted for thousands or millions of years. He also adds that it isdifficult to estimate how much lava prehistoric volcanoes produced, and that lava volume may not necessarily correspond to carbon dioxide emissions.Black Holes TriggerScientists have long understood that supermassive black holes weighing millions or billions of suns can tear apart stars that come too close.The black hotels gravity pullsharder on the nearest part of the star,an imbalance thatpulls the star apart over a period of minutes or hours,onceit gets close enough.Scientists say this Uneven pulling is not the only hazard facing the star.The strain of these unbalanced forces canalso trigger a nuclear explosion powerful enough to destroythe star from within.Matthieu Brassart and Jean-PierreLuminet of the Observatoire de Paris in Meudon,France1,carried out computer simulations of the final moments of such an unfortunate star‘s life,as it veered towards a supermassive black hole.When the star gets close enough,the uneven forcesflatten it into a pancake shape.Some previous studies had suggested this flattening would increase the density and temperature inside the star enough to trigger intense nuclear reactions that would tear it apart.But other studies had suggested that the picture would be complicated by shockwaves generated during the flattening process and that no nuclear explosion should occur.The new simulations investigated the effects of shock waves in detail,and found that even when their effects are included,the conditions favor a nuclear explo sion.“Therewill be an explosion of the star — it will be completely destroyed,” Brassart says. Although the explosionobliterates the star,it saves some of the star‘s matterfrom being devoured by the black hole.The explosion ispowerful enough to hurl mu ch of the star’s matter out of the black hole‘s reach,he says.The devouring of stars by black holes may already have been observed,although at a much later stage.It is thought that several months after the event that rips the star apart,its matter starts swirling into the hole itself.It heats upas it does so,releasing ultraviolet light and X-rays.If stars disrupted near black holes really do explode,then they could in principle allow these events to bedetected at a much earlier stage,says Jules Hatpern ofColumbia University in New York,US2.“It may make itpossible to see the disruption of that star immediately if it gets hot enough,” he says.Brassart agrees.“Perhaps it can be observed in the X-rays and gamma rays,but it‘s something that needs to bemore studied,” he says.Supernova researcher Chris Fryer of the Los Alamos National Laboratory in Los Alamos,New Mexico,US3,says the deaths of these stars are difficult to simulate,and he is not sure whether the researchers have proven their case that they explode in the process.词汇:supermassive adj.特大质量的imbalance/im5bAlEns/n.不平衡,不平衡veer/ viE/v.转向,改变方向flatten/5flAtn/v.使成扁平,夷平pancake/5pAnkeik/n.薄煎饼obliterate/E5blitEreit/v.抹去,除去,消除devour/di5vauE(r)/v.吞没;毁灭swirl/swE:l/打旋,旋动gamma rays γ 射线supernova/7sju:pE5nEuvE/n.超新星。
2020职称英语考试真题及答案:理工类B级补全短文(文字版)
2020职称英语考试真题及答案:理工类B级补全短文(文字版)补全短文What Is a Dream?For centuries, people have wondered about thestrange things that they dream about. Some psychologists say that thisnighttime activity of the mind has no special meaning. Others,however, think that dreams are an importantpart of our lives. In fact, many experts believe that dreams can tell us abouta person’s mind and emotions.Before modern times, many people thought thatdreams contained messages from God. ___E________(46)The Austrian psychologist, Sigmund Freud1,was probably the first person tostudy dreams scientifically. In his famous book, The interpretation of Dreams (1900), Freud wrote that dreams are anexpression of a person’s wishes. He believed that dreams allow people toexpress the feelings, thoughts, and fears that they are afraid to express inreal life.The Swiss psychiatrist Carl Jung2 wasonce a student of Freud’s. Jung,however,had a different idea about dreams. Jung believed that the purpose ofa dream was to communicate a message to the dreamer. ______F_____(47) Forexample, people who dream about falling may learn that they have too high anopinion of themselves. On the other hand, people who dream about being heroesmay learn that they think too little of themselves.Modern-day psychologists continue to developtheories about dreams. For example, psychologist William Domhoff from theUniversity of California, Santa Cruz,believes that dreams are tightly linked to a person’s daily life,thoughts, and behavior. ______C_____(48)Domhoff believes that there is a connectionbetween dreams and age. His research shows that children do not dream as muchas adults. According to Domhoff, dreaming is a mentalskill that needs time todevelop.He has also found a link between dreams andgender. His studies show that the dreams of men and women are different. ____A_______(49)This is not true of women’s dreams.3 Domhoff found this genderdifference in the dreams of people from 11 cultures around the world, includingboth modern andtraditional ones.Can dreams help us understand ourselves?Psychologists continue to try to answer this question in different ways._____D______(50)The dream may have meaning, but it does not mean that some terrible event willactually take place. It’s important to remember that the world of dreams is notthe real world.A. For example, the people in men's dreamsare often other men. and the dreams often involve fighting.B. Men and women dream about differentthings.C. A criminal, for example, might dreamabout crime.D. However, one thing they agree on this:If you dream that something terrible is going to occur, you shouldn't panic.E. It was only in the twentieth centurythat people started to study dreams in a scientific way.F. He thought people could leam more aboutthemselves by thinking about their dreams.。
2020职称英语考试《理工类》阅读理解试题(4)
2020职称英语考试《理工类》阅读理解试题(4)2020年职称英语考试《理工类》阅读理解试题(4)Eiffel Is an EyefulSome 300 meters up,near the Eiffel Tower's wind-whipped summit the world comes toscribble.Japanese,Brazilians.Americans-they graffiti their names,loves and politics on the cold iron-transforming the most French of monuments into symbol of a world on the move.With Pairs laid out in miniature below,it seems strange that visitors would rather waste time marking their presence than admiring the view.But the graffiti also raises a question:Why,nearly 114 years after it was completed,and decades after it ceased to be the world's talleststructure,is the Tour Eiffel still so popular?The reasons are as complex as the iron work that graces a structure some 90 stories high.But part of the answer is,no doubt,its agelessness,regularly maintained,it should never rust away.Graffiti is regularly painted over,but the tower lives on."Eiffel represents Paris and Paris is France.It is very symbolic,"says Hugues Richard,a 31-year-old Frenchman who holds the record for cycling up to the tower's second floor-747 steps in 19 minutes and 4 seconds,without touching the floor with his feet."It's iron lady,it inspires us,"he says.But to what?After all,the tower doesn't have a purpose.It ceased to be the world's tallest in 1930 when the Chrysler Building went up in New York.Yes,television andradio signals are beamed from the top,and Gustave Eiffel,a frenetic builder who died on December 27,aged 91,used its height for conducting research into weather,aerodynamics and radio communication.But in essence the tower inspires simply by being there-a blank canvas for visitors to make of it what they will.To the technically minded,it's an engineering triumph.Forlovers,it's romantic."The tower will outlast all of us,and by a long way,"says Isabelle Esnous,whose company.manages Eiffel Tower.。
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2020年职称英语考试理工类阅读理解(5)
Language learning begins with listening. Children are greatly different in the amount of listening they do before they start speaking, and later starters are often long
listeners .Most children will “obey” spoken instructions some time before they can sp eak, though the word “obey” is hardly accurate as a description of the eager and delighted cooperation usually shown by the child .Before they can speak, many children will also ask questions by gesture and by
making questioning noises.
Any attempt to study the development from the noises babies make to their first spoken words leads to considerable difficulties. It is agreed that they enjoy making noises, and that during the first few months one or two noises sort themselves as particularly expressive as delight, pain, friendliness, and so on. But since these can’t be said to show the baby’s intention to communicate ,they can hardly be regarded as early forms of language. It is agreed, too, that from about three months they play with sounds for enjoyment, and that by six months they are able to add new words to
their store. This self-imitation(模仿)leads on to
deliberate(有意的)imitation of sounds made or words spoken to them by other people. The problem then arises as to the point at which one can say that these imitations can be considered
as speech.
It is a problem we need to get out teeth into. The meaning of a word depends on what a particular person means
by it in a particular situation and it is clear that what a child means by a word will change as he gains more experience
of the world .Thus the use at seven months of “mama” as a greeting for his mother cannot be dismissed as a meaningless sound simply because he also uses it at other times for his father, his dog, or anything else he likes. Playful and meaningless imitation of what other people say continues after the child has begun to speak for himself, I doubt, however whether anything is gained when parents take advantage of this ability in an attempt to teach new sounds .
1. Before children start speaking________.
A .they need equal amount of listening
B. they need different amounts of listening
C. they are all eager to cooperate with the adults by obeying spoken instructions
D. they can’t understand and obey the adult’s oral instructions
2. Children who start speaking late ________.
A. may have problems with their listening
B. probably do not hear enough language spoken around them
C. usually pay close attention to what they hear
D. often take a long time in learning to listen properly
3. A baby’s first noises are ________.
A. an expression of his moods and feelings
B. an early form of language
C. a sign that he means to tell you something
D. an imitation of the speech of adults
4. The problem of deciding at what point a baby’s imitations can be considered as speech________.
A. is important because words have different meanings for different people
B. is not especially important because the changeover takes place gradually
C. is one that should be properly understood because the meaning of words changes with age
D. is one that should be completely ignored(忽略)because children’s use of words is often meaningless
5. The speaker implies________.
A. parents can never hope to teach their children new sounds
B. children no longer imitate people after they begin to speak
C. children who are good at imitating learn new words more quickly
D. even after they have learnt to speak, children still enjoy imitating.
答案解析:BDABD
1. 该问题的关键在Before start speaking,短文的第一段的第二句话明确给出“Children are greatly different in the amount。