[整理]职称英语理工类a真题及答案完整版.
职称英语等级理工类(A级)试题考试试题答案及题解
职称英语等级理工类(A级)试题考试试题答案及题解3第3部分：概括大意与完成句子(第2卜30题，每题1分，共8分) 阅读下面这篇短文，短文后有2项测试任务：(1)第23~26题要求从所给的6个选项中为第1～4段每段选择1个正确的小标题；(2)第27~30题要求从所给的6个选项中选择4个正确选项，分别完成每个句子。
请将答案涂在答题卡相应的位置上。
Cloning(克隆)：Future Perfect?1 A clone is all exact copy of a plant or animal produced from any one cell. Since Scottish scientists reported that they had managed to clone a sheep named Dolly in 1997，research into cloning has grown rapidly．In May 1998，scientists in Massachusetts managed to create two identical calves(牛犊)using cloning technology．A mouse has also been cloned successfully，But the debate over cloning humans really started when Chicago physicist Richard Seed made a surprising announcement：“We will have managed to clone a human being within the next two years，”he told the world．2 Seed’S announcement provoked a lot of media attention，most of it negative．In Europe，nineteen nations have already signed an agreement banning human cloning and in the US the President announced：”We will be introducing a law to ban all human cloning and many states in the US will have passed anti-cloning laws by the end of the year．’’3 Many researchers are not so negative about cloning，They are worried that laws banning human cloning will threaten important research．In March，The New England Journal of Medicine called any plan to ban research on cloning humans seriously mistaken．Many researchers also believe that in spite of attempts to ban it，humancloning will have become routine by 2010 because it is impossible to stop the progress of science．4 Is there reason to fear that cloning will lead to a nightmare world? The public has been bombarded(轰炸)with newspaper articles，television shows and films，as well as cartoons．Such information is often misleading，and makes people wonder what on earth the scientists will be doing next．Within the next five to ten years scientists will probably have found a way of cloning humans. It could be that pretty soon we will be able to choose the person that we want our child to look like．But how would it feel to be a clone among hundreds，the anti-cloners ask．Pretty cool, answer the pr-cloners(赞成克隆的人)．第4部分：阅读理解(第31～45题，每题3分，共45分)下面有3篇短文，每篇短文后有5道题，每道题后面有4个选项。
最新职称英语《理工A》真题及答案(完整版)
职称英语《理工A》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 revelation of his past ledto his resignation.A.imaginationB. confirmationC.recallD. disclosure答案为D. revelation(揭露)– disclosure(揭露)2. Jensen is a dangerous man, and can bevery brutal.A.carelessB. cruelC.strongD. hard答案为B. brutal(残忍的) – cruel3. You’ll have to sprint if youwant to catch the train.A.jumpB.escapeC. runD.prepare答案为C. sprint (快速奔跑) – run(奔跑)4. We are worried about this fluid situation full with uncertainty.A. changeableD.adaptable答案为A. fluid(不稳定的) –changeable (易变的)5. The new garment fits herperfectly.A.haircutB. purseC. clothesD.necklace答案为C. garment(衣服) –clothes(衣服)6. The phobia may have its root in achildhood 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. They have to build canals to irrigatethe desert.A.decorateB. waterC.changeD. visit答案为B. irrigate(灌溉) –water(给…浇水)8. Her overall language proficiencyremains that of a toddler.A.disabledD. baby答案为D. toddler(学步的儿童) – baby(婴儿)9. The coastal area has very mild winter, but the central plains remain extremely cold.A. warmB.severeC.hardD.dry答案为A. mild(温暖的) – warm(温暖的)10. The details of the costume weretotally authentic.A. realB.outstandingC.creativeD. false答案为A. authentic(逼真的)– real (逼真的)11. We are aware of the potential problems.A.globalB. possibleC.ongoingD. central答案为B. potential(可能的)-possible(可能的)12. The idea was quite brilliant.A.positiveB. cleverC.keyD. original答案为B. brilliant(绝妙的)– clever (聪明的)13. Stock market price tumbledafter rumor of a rise in interest rate.A.regulatedB. increasedC. fellD.maintained答案为C. tumbled(暴跌) –fell(下降)14. The course gives you basic instructionsin car maintenance.A. coachingB. ideaC.termD. aspect答案为A. instructions (指导说明)—coaching(教导)15. All houses within 100 metres of theseas at risk of flooding.A. in dangerB. out of controlC.between equalsD. in particular答案为A in danger of (处于危险中)— at risk of (处于风险中) 阅读判断The Greatest of Victorian EngineersIn the hundred years up to 1860, the work of a small group of construction engineers carried forward the enormous social and economic change that we associate with the Industrial Revolution in Britain. The most important of these engineers was Isambard Kingdom Brunel, whose work in shipping, bridge-building, and railway construction, to name just three fields, both challenged and motivated his colleagues. He was the driving force behind a number of the hugely ambitious projects, some of which resulted in works which are still in use today.The son of an engineer, Brunel apprenticed with his father at an early age on the building of the Thames Tunnel. At the age of just twenty, he became engineer in charge of the project. This impressive plan to bore under the Thames twice suffered two major disasters when the river broke through into the tunnel when the second breach(决口)occurred in 1872, Brunel was seriously injured during rescue operation and further work was halted.While recovering from his injuries, Brunel entered a design competition for a new bridge over the Avon Gorge near Clifton. The original judge of the competition was Thomas Telford, a leading civil engineer of his day, who rejected all entries to the competition in favor of his own design. After considerable scandal, a second contest was held and Brunel’s design was accepted. For reasons of funding, however, exacerbated(加剧) by social unrest in Bristol, the project was abandoned in 1843 with only the towers completed. After Brunel’s death, it was decided to begin work on it again, partly so that the bridge could form a fitting memorial to the great engineer. The entire structure was finally completed in 1864. Today, the well-known Clifton Suspension Bridge is a symbol of Bristol, just as the Opera House is of Sydney.Originally intended only for horse-drawn traffic, the bridge now bears over four million motor vehicles a year.16.【题干】Brunel was an important airplane engineer in Britain during the Industrial Revolution.【选项】A.RightB.WrongC.Not mentioned【答案】C【解析】17.【题干】Brunel was involved less in railway construction than in other engineering fields.【选项】A.RightB.WrongC.Not mentioned【答案】C【解析】18.【题干】Brunel worked only on shipping, bridge-building and railway construction.【选项】A.RightB.WrongC.Not mentioned【答案】B【解析】19.【题干】Brunel work was largely ignored by his colleagues.【选项】A.RightB.WrongC.Not mentioned【答案】B【解析】20.【题干】Some projects Brunel contributed to are still in use today.【选项】A.RightB.WrongC.Not mentioned【答案】A【解析】21.【题干】Brunel became an apprentice with his father when he was very young. 【选项】A.RightB.WrongC.Not mentioned【答案】A【解析】22.【题干】The Thames Tunnel project was more difficult than any previousprojects undertaken in Britain.【选项】A.RightB.WrongC.Not mentioned【答案】C【解析】Geothermal(地热)Energy1.Since heat naturally moves from hotter regions to cooler ones, the heat from the earth’s center flows outwards towards the su rface. In this way, it transfers to the next layer of rock. If the temperature is high enough, some of this rock melts and forms magma(岩浆). The magma ascends in its turn towards the earth’s surface. It often remains well below the earth’s surface, creating vast areas of hot rock. In such regions, there are deep cracks, which allow rainwater to descend underground. Some of the heated rainwater travels back up to the earth’s surface where it will appear as a hot spring. However, if this ascending hot water reaches a layer of impermeable(不可渗透的)rock, it remains trapped, forming a geothermal reservoir. If geothermal reservoirs are close enough to the surface, they can be reached by drilling wells. Hot water and steam shoot up the wells naturally, and can be used to produce electricity in geothermal power plants.2.A few geothermal power plants depend on dry-stem reservoirs which produce steam but little or no water. In these cases, the steam is piped up directly to provide the power to spin a turbine generator. The first geothermal power plant, constructed at Lardarello in Italy, was of this type, and is still producing electricity today.3.Most currently operating geothermal power plants are either “flash” steam plants or binary(双重的)plants. Flash plants produce mainly hot water ranging in temperature from 300°to 700°Fahrenheit. This water is passed through one or two separators where released from the pressure of the underground reservoir, it “flashes” or boils into steam Again, the force of this steam provides the energy to spin the turbine and produce electricity. The geothermal water and steam are then reinjected directly back down into the earth to maintain the volume and pressure of the reservoir. Gradually they will be reheated and can then be used again.4.A reservoir with temperatures below 300° Fahrenheit is not hot enough to flash steam but it can still be used to generate electricity in binary fluid. The steam from this is used to power the turbines. As in the flash steam plant, the geothermal water is recycled back into the reservoir.23.【题干】Paragraph1_____【选项】A.Dry steam plantsB.Binary plantsC.Origin of geothermal energyD.Generation of electricityE.Flash steam plantsF.Recyclable water and steam【答案】C【解析】24【题干】Paragraph2_____【选项】A.Dry steam plantsB.Binary plantsC.Origin of geothermal energyD.Generation of electricityE.Flash steam plantsF.Recyclable water and steam 【答案】A【解析】25【题干】Paragraph3_____ 【选项】A.Dry steam plantsB.Binary plantsC.Origin of geothermal energyD.Generation of electricityE.Flash steam plantsF.Recyclable water and steam 【答案】E【解析】26【题干】Paragraph4_____ 【选项】A.Dry steam plantsB.Binary plantsC.Origin of geothermal energyD.Generation of electricityE.Flash steam plantsF.Recyclable water and steam【答案】F【解析】27.【题干】A geothermal reservoir is formed when hot water is trapped under _____.【选项】A.the energy to turn a turbineB.impermeable rockC.one or two separatorsD.turbine operatorE.little or no waterF.hot springs【答案】B【解析】28.【题干】A dry-steam reservoir produces steam with _____.【选项】A.the energy to turn a turbineB.impermeable rockC.one or two separatorsD.turbine operatorE.little or no waterF.hot springs【答案】E【解析】29.【题干】Flash plants produce hot water through _____.【选项】A.the energy to turn a turbineB.impermeable rockC.one or two separatorsD.turbine operatorE.little or no waterF.hot springs【答案】C【解析】30.【题干】In a binary plant, the heat of the geothermal water can be converted into _____.【选项】A.the energy to turn a turbineB.impermeable rockC.one or two separatorsD.turbine operatorE.little or no waterF.hot springs【答案】A【解析】Black Holes Trigger Stars to Self-DestructScientists have long understood that supermassive black holes weighing millionsor billions of suns can tear apart stars that come too close. The black hotels gravity pulls harder on the nearest part of the star, an imbalance that pulls the star apart over a period of minutes or hours, once it gets close enough.Scientists say this Uneven pulling is not the only hazard facing the star. The strain of these unbalanced forces can also trigger a nuclear explosion powerful enough to destroy the star from within. Matthieu Brassart and Jean-Pierre Luminet of the Observatoire de Paris in Meudon, France, 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 forces flatten 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 shock waves 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 explosion. “There will be an explosion of the star-it will be completely destroyed,” Brassart says. Although the explosion obliterates the star, it saves some of the star’s matter from being devoured by the black hole. The explosion is powerful enough to hurl much 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 up as it does so, releasingultraviolet light and X-rays.If stars disrupted near black holes really do explode, then they could in principle allow these events to be detected at a much earlier stage, says Jules Hatpern of Columbia University in New York, US. “It may make it possible to see the disruption of that star immediately if it gets hot enough,” he says.Br assart agrees. “Perhaps it can be observed in the X-rays and gamma rays, but it’s something that needs to be more studied,” he says. Supernova researcher Chris Fryer of the Los Alamos National Laboratory in Los Alamos, New Mexico, US, 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.31.【题干】Something destructive could happen to a star that gets too close to a black hole. Which of the following destructive statements is NOT mentioned in the passage?【选项】A.The black hole could tear apart the star.B.The black hole could trigger a nuclear explosion in the star.C.The black hole could dwindle its size considerably.D.The black hole could devour the star.【答案】C【解析】32.【题干】According to the third paragraph，researchers differed from each other in the problem of_____【选项】A.whether nuclear reaction would occur.B.whether the stars would increase its density and temperature.C.whether shock waves would occur.D.whether the uneven forces would flatten the stars.【答案】A【解析】33.【题干】According to the fourth paragraph，which of the following is NOT true?【选项】A.No nuclear explosion would be triggered inside the star.B.The star would be destroyed completely.C.Much of the star’s matter thrown by the explosion would be beyond the black hole’s reach.D.The black hole would completely devour the star.【答案】D【解析】34.【题干】What will happen several months after the explosion of the star?【选项】A.The star’s matter will move further away from by the black hole.B.The black hole’s matter will heat up.C.The torn star’s matter will swirl into the black hole.D.The b lack hole’s matter will release ultraviolet light and X-rays.【答案】C【解析】35.【题干】According to the context，the word “disruption” in Paragraph 6 means_____【选项】A.”Confusion.”B.”Tearing apart.”C.”Interruption.”D.”Flattening.”【答案】B【解析】阅读理解第二篇Deforestation and Desertification(沙漠化)TheSahel zone lies between the Saharadesert and the fertile savannahs(热带大草原)ofnorthern Nigeria and South Sudan. The word sahel comes from Arabic and means marginal or transitional ,andthis is a good description of thesesemi-arid(半干旱)lands,whichoccupy much of the Western African countries of Mail,Mauritania,Niger,and Chad.Unfortunately, over the last century theSahara desert has steadily crept southwards eating into once productive Sahellands. United Nations surveys show that over 70 percent of the dry land inagriculture use in Africa has deterioratedover the last 30 years. Droughts have become more severe, the most recentlasting over twenty years in parts of the Sahel region. The same process ofdesertification is taking place across southern Africa as the Kalahari desertadvances into Botswana and parts of South Africa.One ofthe major causes of this desert advance ispoor agricultural land use, driven by the pressures of increasing population.Overgrazing一keeping too many farm animals on the land一means that grasses and other plants cannot recover, and scarce water suppliesare exhausted. Overcultivation一tryingto grow too many crops on poorland一resultsin the soil becoming even less fertile and drier, and beginning to break up. Soilerosion (侵蚀) follows, and the land turns into desert.Another cause of desertification is loss of tree cover. Trees are cutdown for use as fuel and to clear land for agricultural use. Tree roots help tobind the soil together, to conserve moisture, and to provide a habitat forother plants and animals. When trees are cut down, the soil begins to dry andloosen, wind and rain erosion increase, other plant species die, and eventuallythe fertile top soil may be almost entirely lost, leaving only bare rock anddust.The effects of loss of topsoil and increased drought are irreversible. Theyare,however, preventable. Careful conservation of tree cover and sustainableagricultural land use have been shown to halt deterioration of soils and lessenthe effects of shortage of rainfall. One project in Kita in south-west Malifunded by UNDP has involved local communities in sustainable management offorest,while at the same time providing a viable(有活力的)agriculturaleconomy. This may be a model for similar projects in otherWest African countries.35 order to prevent desertification,the author proposes ___.A. making good use of international aidsB. developing a sustainableagricultural economyC. gaining international supportD. converting agricultural land intoforest答案：b36.The Sahel zone is an area which ___.A. is covered with sad and grassB. has a long historyC. occupies much of South NigeriaD. belongs to Sudan答案：a37. What is the situation about thedesertification in Africa?A. The deserts are replaced withgrasslandsB. The deserts are expandingC. the deserts are moving northwardsD. the deserts are being deserted答案：b38. The wor d “deteriorated ” in paragraph2 means ___.A. deepenedB. sufferedC. slippedD. worsened答案：d39. What is the root causeof desertification?A. poor farmingB. overpopulationC. radical climate changeD. disappearance of rare plant species答案：a40. In order to prevent desertification,the author proposes ___.A. making good use of international aidsB. developing a sustainableagricultural economyC. gaining international supportD. converting agricultural land intoforest答案：b第三篇OlderV olcanic EruptionsV olcanoes were more destructive in ancient history, not because theywere bigger，but because the carbon dioxide(二氧化碳)theyreleased wiped out life with greater ease.Paul Wignall from the University of Leeds was investigating the linkbetween volcanic eruptions and mass extinctions. Not all volcanic eruptionskilled off large numbers of animals, but all the mass extinctions over the past300 million years coincided with huge formations of volcanic rock. To hissurprise, the older the massive volcanic eruptions were, the more damage theyseemed to do. He calculated the “killing efficiency” for thesevolcanoes by comparing the proportion of life they killed off with the volumeof lava (熔岩) that they produced. He found that sizefor size, older eruptions were at least 10 times as effective at wiping outlife as their more recent rivalsThe Permian (二叠纪)extinction, for example, which happened 250 million years ago, is marked byfloods of volcanic rock in Siberia that cover an area roughly the size ofwestern Europe. Those volcanoes are thought to have pumped out about 10gigatonnes (十亿吨) of carbon as carbon dioxide. The globalwarming that followed wiped out 80 percent of all marine genera (种类)at the time, and it took 5 million years for the planet to recover. Yet 60million years ago, there was another huge amount of volcanic activity andglobal warming but no mass extindtion. Some animals diddisappear but thingsreturned to normal within tens of thousands of years. “The most recentones hardly have an effect at all,” Wignall says. He ignored theextinction which wiped out the dinosaurs (恐龙) 65million years ago, because many scientists believe it was primarily caused bythe impact of an asteroid (小行星). Hethinks that older volcanoes had more killing power because more recent lifeforms 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 provocative. But he says it is incredibly hard todo these sorts of calculations. He points out that the killing power ofvolcanic eruptions depends on how long they lasted. And it is impossible totell whether the huge blasts lasted for thousandsor millions of years. He also adds that itis difficult to estimate how much lava prehistoric volcanoes produced, and thatlava volume may not necessarily correspond to carbon dioxide emissions.41.Older volcanic eruptions did moredamage than more recent ones becauseA. older volcanoes were brighter.B. carbon dioxide made the earth muchwarmerC. older volcanoes were hotterD. carbon dioxide killed off life moreeasily答案：d42. Wignall calculated the killing powerof those older volcanic eruptions byA. estimating how long they lastedB. counting the dinosaurs they killedC. comparing the proportion of lifekilled with the volume of lava producedD. studying the chemical composition oflava答案：c43. When did dinosaurs become extinct?A. 300 million years ago.B. 250 million years agoC. 65 million years agoD. 60 million years ago答案：c44. It can be inferred from Paragraph 3that the cause of dinosaur extinction is_______A. a political issue.B. self-evident.C. quite certainD. controversial答案：d45. What is the main thesis of thearticle?A. V olcanic eruptions are not alwaysdeadly.B. Carbon dioxide emissions often giverise to global warming.C. Older volcanic eruptions are moredestructiveD. It is not easy to calculate the killingpower of a volcanic eruption答案：cResearchers Discover Why Humans Began Walking UprightMost of us walk and carry items in our hands every day. These are seemingly simple activities that the majority of us don’t question. _____(46) The team ofresearchers from the U. S., England, Japan and Portugal investigated the behavior of modern-day chimpanzees as they competed for food resources，in an effort to understand what ecological settings would lead a large ape — one that resembles the 6 million-year old ancestor we shared in common with living chimpanzees — to walk on two legs.“These chimpanzees provide a model of the ecological conditions under which our earliest ancestors might have begun walking on two legs”, said Dr. Richmond.The research findings suggest that chimpanzees switch to moving on two limbs instead of four in situations where they need to monopolize a resource._____(47)Over time, intense bursts of bipedal activity may have led to anatomical changes that in turn became the subject of natural selection where competition for food or other resources was strong.Two studies were conducted by the team in Guinea. The first study was conducted by the team in Kyoto University’s “outdoor laboratory” in a natural clearing in Bossou Forest. _____(48)The chimpanzees’ behavior was monitored in three situations: when only oil palm nuts were available, when a small number of coula nuts were available，and when coula nuts were the majority available resource.When the rare coula nuts were available only in small numbers, the chimpanzees transported more at one time. Similarly, when coula nuts were the majority resource, the chimpanzees ignored the oil palm nuts altogether. _____(49)In such high-competition settings，the frequency of cases in which the chimpanzees started moving on two legs increased by a factor of four. Not only was it obvious that bipedal movement allowed them to carry more of this precious resource, but also that they were actively trying to move as much as they could in one go by using everythingavailable-even their mouths.The second study, by Kimberley Hockings of Oxford Brookes University, was a 14-month study of Bossou chimpanzees crop-raiding, a situation in which they have to compete for rare and unpredictable Resources. _____(50)46.【题干】_____【选项】A.Standing on two legs allows them to carry much more at one time because it frees up their hands.B.But an international team of researchers, including Dr. Richmond from GW’s Columbian College of Arts and Sciences，have discovered that human walking upright, may have originated millions of years ago as an adaptation to carrying scarce, high- quality resources.C.Here, 35 percent of the chimpanzees activity involved some sort of bipedal movement, and once again, this behavior appeared to be linked to a clear attempt to carry as much as possible at one time.D.XXXXXXE.Researchers allowed the wild chimpanzees access to different combinations of two different types of nut — the oil palm nut，which is naturally widely available, and the coula nut, which is not.F.The chimpanzees regarded the coula nuts as a more highly-prized resource and competed for them more intensely.【答案】B【解析】47.【题干】_____【选项】A.Standing on two legs allows them to carry much more at one time because it frees up their hands.B.But an international team of researchers, including Dr. Richmond from GW’s Columbian College of Arts and Sciences，have discovered that human walking upright, may have originated millions of years ago as an adaptation to carrying scarce, high- quality resources.C.Here, 35 percent of the chimpanzees activity involved some sort of bipedal movement, and once again, this behavior appeared to be linked to a clear attempt to carry as much as possible at one time.D.XXXXXXE.Researchers allowed the wild chimpanzees access to different combinations of two different types of nut — the oil palm nut，which is naturally widely available, and the coula nut, which is not.F.The chimpanzees regarded the coula nuts as a more highly-prized resource and competed for them more intensely.【答案】A【解析】48.【题干】_____【选项】A.Standing on two legs allows them to carry much more at one time because it frees up their hands.B.But an international team of researchers, including Dr. Richmond f rom GW’s Columbian College of Arts and Sciences，have discovered that human walking upright,may have originated millions of years ago as an adaptation to carrying scarce, high- quality resources.C.Here, 35 percent of the chimpanzees activity involved some sort of bipedal movement, and once again, this behavior appeared to be linked to a clear attempt to carry as much as possible at one time.D.XXXXXXE.Researchers allowed the wild chimpanzees access to different combinations of two different types of nut — the oil palm nut，which is naturally widely available, and the coula nut, which is not.F.The chimpanzees regarded the coula nuts as a more highly-prized resource and competed for them more intensely.【答案】E【解析】49.【题干】_____【选项】A.Standing on two legs allows them to carry much more at one time because it frees up their hands.B.But an international team of researchers, including Dr. Richmond from GW’s Columbian College of Arts and Sciences，have discovered that human walking upright, may have originated millions of years ago as an adaptation to carrying scarce, high- quality resources.C.Here, 35 percent of the chimpanzees activity involved some sort of bipedal movement, and once again, this behavior appeared to be linked to a clear attempt to carry as much as possible at one time.D.XXXXXXE.Researchers allowed the wild chimpanzees access to different combinations of two different types of nut — the oil palm nut，which is naturally widely available, and the coula nut, which is not.F.The chimpanzees regarded the coula nuts as a more highly-prized resource and competed for them more intensely.【答案】F【解析】50.【题干】_____【选项】A.Standing on two legs allows them to carry much more at one time because it frees up their hands.B.But an international team of researchers, including Dr. Richmond from GW’s Columbian College of Arts and Sciences，have discovered that human walking upright, may have originated millions of years ago as an adaptation to carrying scarce, high- quality resources.C.Here, 35 percent of the chimpanzees activity involved some sort of bipedal movement, and once again, this behavior appeared to be linked to a clear attempt to carry as much as possible at one time.D.XXXXXXE.Researchers allowed the wild chimpanzees access to different combinations of two different types of nut — the oil palm nut，which is naturally widely available, and the coula nut, which is not.F.The chimpanzees regarded the coula nuts as a more highly-prized resource andcompeted for them more intensely.【答案】C【解析】CellPhone Lets Your Secrets OutYour cell phone holds secrets about you.Besides the names and numbers that you’ve programmed into it, ______traces____(51) of your DNA linger (遗留) on thedevice according to a new studyDNA is genetic (遗传的)material _____that_____ (52) appears in every cell. Like your fingerprint, yourDNA is _____unique______ (53) to you——unless you have an identical twin. Scientiststoday analyze DNA in blood, saliva (唾液), orhair left ____behind_______ (54) at the scene of a crime. The results oftenhelp detectives identify ____criminals______ (55) and their victims. Your cellphone can reveal more about you ____than_____ (56) you might think.Meghan J. McFadden, a scientist at McMasterUniversity in Hamilton, Ontario, heard about a crime in which the suspect bledonto a cell phone and later dropped the____device_____ (57). This made herwonder whether traces of DNA lingered on cell phones一evenwhen no blood was___involved_____(58). She and colleague Margaret Wallace ofthe City University of NewYork analyzed the flip-open phones(翻盖手机)of10 volunteers. They used swabs (药签) tocollect _____invisible___ (59) traces of the users from two parts of the phone:the outside, where the user ____holds_____(60) it, and the speaker which isplaced at the user’s ear The scientists cleaned the phones using asolution made mostly__of____(61) alcohol. The aim of washing was to remove alldetectable traces of DNA. The owners got their phones back for another week.Then the researchers ___returned________ (62)。
职称英语等级考试理工类A级试题及答案答案附后
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2015年职称英语等级考试理工类A级试题及答案
第l部分：词汇选项第1～15题,每题1分,共15分
下面共有15个句子,每个句子中均有1个词或短语画有底横线,请从每个句子后面所给的4个选项中选择1个与画线部分意义最相近的词或短语;请将答案涂在答题卡相应的
位置上;
1 The dentist has decided to extract her bad tooth．
A take out
B break off
C push in
D dig up
2 The economy continued to exhibit signs of decline in September．
A play
B show
C send
D tell
3 This table is strong and durable．
A long-lasting
B extensive
C far-reaching
D eternal
4 He endured great pain before he finally expired.
A fired
B resigned
C died
D retreated
5 The girl is gazing at herself in the mirror．
A smiling
B laughing
C shouting
D staring。
职称英语等级理工类(A级)试题考试试题答案及题解
职称英语等级理工类(A级)试题考试试题答案及题解4第二篇A Phone That Knows You’re BusyIt’s a modern problem：you’re too busy to be disturbed by incessant(连续不断的)phone calls so you turn your cellphone off .But if you don’t remember to turn it back on when you’re less busy．you could miss some important calls if only the phone knew when it was wise to interrupt you，you wouldn’t have to turn it off at all. Instead，it could let calls through when you are not too busyA bunch of behavior sensors(传感器)and a clever piece of software could do just that，by analyzing your behavior to determine if it’s a good time to interrupt you．If built into a phone，the system may decide you’re too busy and ask the caller to leave a message or ring back later．James Fogarty and Scott Hudson at Camegie Mellon University in Pennsylvania based their system oil tiny microphones，cameras and touch sensors that reveal body language and activity．First they had to study different behaviors to find out which ones stongly predict whether your mind is interrupted.The potential“busyness”signals they focused on included whether the office doors were left open or closed，the time of day，if other people were with the person in question，how close they were to each other, and whether or not the computer was in use．The sensors monitored these and many other factors while four subjects were at work . At random intervals，the subjects rated how interruptible they were on a scale ranging from“highly interruptible’’to“highly not—interruptible” . Their ratin gs were then correlated with the various behaviors . “It is a shotgun(随意的)approach：we used all the indicators we could think of and then let statistics find out which wereimportant，” says Hudson.The model showed that using the keyboard，and talking on a landline or to someone else in the office correlated most strongly with how interruptible the subjects judged themselves to be．Interestingly，the computer was actually better than people at predicting when someone was too busy to be interrupted . The computer got it right 82 per cent of the time，humans 77 per cent．Fogarty speculates that this might be because people doing the interrupting are inevitably biased towards delivering their message，whereas computers don’t care．The first application for Hudson and Fogarty’s system is likely to be in an instant messaging system，followed by office phones and cellphones．“There is no technological roadblock(障碍) to it being deployed in a couple of years，” says Hudson36 A big problem facing people today is thatA they must tolerate phone disturbances or miss important calls．B they must turn off their phones to keep their homes quiet．C they have to switch from a desktop phone to a cellphone．D they are too busy to make phone calls．37 The behavior sensor and software system built in a phoneA could help store messages．B could send messages instantlyC could tell when it is wise to interrupt you．D could identify important phone calls．38 Scientists at Carnegie Menon University tried to find outA why office doors were often 1eft open．B when it was a good time to turn off the computer．C what questions office workers were bothered with．D which behaviors could tell whether a person was busy39 During the experiment，the subjects were askedA to control the sensors and the camera．B to rate the degrees to which they could be interrupted．C to compare their behaviors with others’.D to analyze all the indicators of interruption．40 The computer performed better than people in the study becauseA the computer worked harder．B the computer was not busyC people tended to be biased．D people were not good at statistics．。
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。
年职称英语考试理工类A级试题及答案
年职称英语考试理工类A级试题及答案第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个意义最为接近选项。
1 She was a puzzleA.girlB.womanC.problemD.mystery2 Her speciality is heart surgery.A.regionB.siteC.fieldD.platform3 France has kept intimate links with its former African territories.A.friendlyB.privateC.strongD.secret4 You should have blended the butter with the sugar thoroughlyA.spreadB.mixedC.beatenD.covered5 The industrial revolution modified the whole structure of English society，A.destroyedB.brokeC.smashedD.changed6 Tickets are limited and will be allocated to those who apply first.A.postedB.sentC.givenD.handed7 The change in that village was miraculous.A.conservativeB.amazingC.insignificantD.unforgettable8 Customers often defer payment for as long as possibleA.makeB.demandC.postponeD.obtain9 Canada will prohibit smoking in all offices later this year.A.banB.removeC.eliminateD.expel10 She read a poem which depicts the splendor of the sunset.A.declaresB.assertsC.describesD.announces11 From my standpoint，this thing is just ridiculousA.fieldB.point of viewC.knowledgermation12 The latest census is encouragingA.statementB.assessmentC.evaluationD.count15 He was elevated to the post of prime minister.A.pulledB.promotedC.liftedD.treated17 The Monarch butterfly looks fragile.A.RightB.WrongC.Not mentioned18 The Mexicans like butterflies very much.A.RightB.WrongC.Not mentioned19 in bad winters， about 70 per cent of the butterflies can stay aliveA.RightB.WrongC.Not mentioned20 In early April， the butterflies leave their winter homes flying back northA.RightB.WrongC.Not mentioned21 Genetically modified maize isn’t poisonous to the butterflies.A.RightB.WrongC.Not mentioned22 Genetically modified products are not popular in MexicoA.RightB.WrongC.Not mentioned33 Which of the following is NOT a social occasion？A.Going to church.B.Going to work in the office.C.Staying at home.D.Going to a party.34 Who brought the Frenchmen’s neckwear to Britain？A.Tony Blair.B.Charles ll.C.Jim Callaghan.D.Andrew Turnbull.35 When did British gentlemen begin to wear ties regularly？A.After the late 19th century.B.In the 1630s.C.In 1660.D.In the late 18th century.36 Losing amphibians means losingA.knowledge about fatal human diseases.B.knowledge about air and water pollution.C.a chance to discover new medicines.D.an opportunity to detect poisonous gases.37 Amphibians lay their eggsA.in any stream they can find，B.in places without UV light，C.only on sand.D.only in the right conditions38 The arroyo toad is disappearing becauseA.it has been threatened by frogs.B.it is losing its habitat.C.a disease has been killing its eggs.D.it can’t bear the cold of winter.39 Coal miners once used the canary bird to detectA.poisonous gases.B.air pollution.C.water leakage.D.radiation.40 Scientists think that the decline of amphibians couldA.cause environmental change.B.cause a decline in other kinds of animals.C.be a warning signal for human beings.D.be a good sign for human beings.41 Belle would be fed some fruit juice if sheA.grasped the joystick.B.moved the joystick to the side of the light.C.sat quietly in a special chair.D.watched lights on a display panel.43 Which of the following is NOT true of the robot built by Srinivasan？A.It was directed by signals converted from the electrical activity in Belle’s brainB.It converted the electrical patterns into instructions for the other robot.C.It was six hundred miles away from where Belle was.D.It could perform the same function as Belle did.45 The short-term goal of the research is to help a personA.whose motor cortex is seriously damaged.B.who can operate a wheelchair but not a robotic limb.C.who has spinal cord injury but is able to move a wheelchair.D.who is unable to move but whose motor cortex is not damaged第5部分：补全短文（第46～50题，每题2分，共10分）下面的短文有5处空白，短文后有6个句子，其中5个取自短文，请根据短文内容将其分别放回原有位置，以恢复文章原貌。
职称英语理工类A级考试真题及答案(部分)
职称英语理工类A级考试真题及答案(部分)Small But WiseOn December 14, NASA1 blasted a small but mighty telescope into space. The telescope is called WISE and is about as wide around as a trashcan. Don’t let its small size fool you: WISE has a powerful digital camera, and it will be taking pictures of some the wildest objects2 in the known universe, including asteroids, faint stars, blazing galaxies3 and giant clouds of dust where planets and stars are born.“I’m very excited because we’re going to be s eeing parts of the universe that we haven’t seen before, “said Ned Wright, a scientist who directs the WISE project.Since arriving in space, the WISE telescope has been circling the Earth, held by gravity in a polar orbit4 (this means it crosses close to the north and south poles with each lap5). Its camera is pointed outward, away from the Earth, and WISE will snap a picture of a different part of the sky every 11 minutes. After six months it will have taken pictures across the entire sky.The pic tures taken by WISE won’t be like everyday digital photographs, however. WISE stands for “Wide-field Infrared Survey Explorer.” As its name suggests, the WISE camera takes pictures of features that give off infrared radiation6.Radiation is energy that travels as a wave. Visible light, including the familiar spectrum of light7 that becomes visible in a rainbow, is an example of radiation. When an ordinary digital camera takes a picture of a tree, for example, it receives the wavesof visible light that are reflected off the tree. When these waves enter the camera through the lens, they’re processed by the camera, which then puts the image together.Waves of infrared radiation are longer than waves of visible light, so ordinary digital cameras don’t s ee them, and neither do the eyes of human beings. Although invisible to the eye, longer infrared radiation can be detected as warmth by the skin.That’s a key idea to why WISE will be able to see things other telescopes can’t. Not everything in the universe shows up in visible light. Asteroids, for example, are giant rocks that float through space — but they absorb most of the light that reaches them. They don’t reflect light, so they’re difficult to see. But they do give off infrared radiation, so an infrared telescope like WISE will be able to produce images of them. During its mission WISE will take pictures of hundreds of thousands of asteroids.Brown dwarfs8 are another kind of deep-space object that will show up in WISE’s pictures. These object s are “failed” stars — which means they are not massive enough to jump start9 the same kind of reactions that power stars such as the sun. Instead, brown dwarfs simply shrink and cool down. They’re so dim that they’re almost impossible to see with visible light, but in the infrared spectrum they glow.词汇：trashcan / ‘traelig;,kaelig;n/n．垃圾箱infrared/’infr’red/ adj．红外线asteroid/’aelig;strid/ n.小行星dwarf/dw:f/ n. 矮星注释：1.NASA （美国国家航空航天局）是缩写词，全称是National Aeronautics and Space Administration。
2023年职称英语理工类级真题及答案解析
全国职称英语理工类（A级）真题及答案解析第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个意义最为靠近旳选项。
1.I can't put up with my neighbor's noise any longer，it'S driving me mad.A.tolerateB.generateC.reduceD.mensure2.Regular visits from a social worker can be of immense value to old people living alone.A.equalB.immediateC.moderateD.great3.He was rather vague about the reasons why he never finished school.A.brightB.unclearC.generalD.bad4.I want to provide my boys with a decent education.A.specialB.privateC.generalD.good5.Sleep stairs can present a particular hazard to older people.A.pictureB.dangerC.evidenceD.case6.Our arrangements were thrown into complete turmoil.A.doubtB.reliefC.failureD.confusion7.Patricia stared at the other girls with resentment.A.loveB.surpriseC.angerD.doubt8.Your dog needs at least 20 minutes of vigorous exercise every day.A.energeticB.freeC.physicalD.regular9.I enjoyed the play-it had a clever plot and very funny dialogues.A.boringB.originalC.humorousD.long10.Lower taxes would spur investment and help economic growth.A.attractB.spendC.encourageD.require11.He demolished my argument in minutes.A.supportedB.disprovedC.disputedD.accepted12.The two banks have announced plans to merge next year.A.closeB.sellC.breakbine13.Her father was a quiet man with graceful manners.A.politeualC.badD.similar14.The project required ten years of diligent research.A.hardworkingB.socialC.basicD.scientific15.He was kept in appalling conditions in prison.A.necessaryB.terribleC.criticalD.normal第2部分：阅读判断（第16～22题，每题1分，共7分）下面旳短文后列出了7个句子，请根据短文旳内容对每个句子做出判断：假如该句提供旳是对旳信息，请选择A；假如该句提供旳是错误信息，请选择B；假如该句旳信息文中没有提及，请选择C.California Gives Green Light to Space Solar PowerEnergy beamed down from space is one step closer to reality，now that California has given the green light to an agreement that would see the Pacific Gas and Electric Company buy 200 megawatt （兆瓦）of power beamed down from solar-power satellites beginning in .But some major chal lenges will have to be overcomed if the technology is to be used widely.A start-up company called Solaren is designing the satellites，which it says will use radio waves to beam energy down to a receiving station on Earth.The attraction of collecting solar power in space is the almost uninterrupted sunshine available in eosynchronous（与地球同步旳）orbit.Earth-based solar cells，by contrast，can only collect sun.Light during daytime and when skies are clear.But space-based solar power must grapple（努力克服）with the high cost per kilogram of launching things into space，says Richard Schwartz of Purdue University in West Lafayette，Indiana，"If you're talking about it being economically viable or power of the Earth，it's a tough go."he says.Cal Boerman，Solaren's director of energy services，says the company designed its satellites with a view to keeping launch costs down."We knew we had to come up with a different，revolu-tionary design，"he says.A patent the company has won describes ways to reduce the system'Sweight，including using inflatable minors to focus sunlight on solar cells，so a smaller number cancollect the same amount of energy.But using minors introduces other chaHenges，including keeping the solar cells from overhea-ting，says Schwartz."You have to take care of heat dissipation（散发）because you're now concen-trating a lot of energy in one place，"he says.According to the company's patent，Solaren's solarcells will be connected to radiators to help keep them cool.Though Boerman says the company believes it can make space-based solar power work，it is notexpecting to crowd out other forms of renewable ws in California and other states requireincreasing use of renewable energy in coming years，he points out."To meet those needs，we're go-ing to need all types of renewable energy sources，"he says.16.Solar-power satellites will use radio waves to beam energy down from space.A.RightB.WrongC.Not mentioned17.Solaren is going to design 200 solar-power satellites.A.RightB.WrongC.Not mentioned18.Space-based solar cells could collect solar power only when skies are clear.A.RightB.WrongC.Not mentioned19.One advantage of space-based solar power system is that it is economical.A.RightB.WrongC.Not mentioned20.Inflatable minors are used to reduce the space-based solar power system.A.RightB.WrongC.Not mentioned21.Space-based solar power will rule out other forms of renewable energy sources.A.RightB.WrongC.Not mentioned22.Many countries will grant permission for the use of spaced-based solar power soon.A.RightB.WrongC.Not mentioned第3部分：概括大意与完毕句子（第23～30题，每题1分，共8分）下面旳短文后有2项测试任务：（1）第23～26题规定从所给旳6个选项中为第2-5段每段选择1个最佳标题；（2）第27～30题规定从所给旳6个选项中为每个句子确定1个最佳选项。
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2015职称英语理工类A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：如果该句提供的是正确信息，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。
Lack of Oxygen Delayed the Rise of Animals on EarthScientists have long speculated as to why animal species didn’t flourish sooner, once sufficient oxygen covered the Earth’s surface. Animals began to prosper at the end of the Proterozoic period, about 800 million years ago — but what about the billion-year stretch before that, when most researchers think there also was plenty of oxygen?Well, it seems the air wasn’t so great then, after all.In a study published Oct. 31 in Science, Yale researcher Noah Planavsky and his colleagues found that oxygen levels during the “boring billion” period were only 0.1% of what they are today. In other words, Earth’s atmosphere couldn’t have supported a diversity of creatures, no matter what genetic advancements were poised to occur.“There is no question that genetic and ecological innovation must ultimately be behind the rise of animals, but it is equally unavoidable that animals need a certain level of oxygen,” said Planavsky, co-lead author of the research along with Christopher Reinhard of the Georgia Institute of Technology. “We’re providing the first evidence that oxygen levels were low enough during this period to potentially prevent the rise of animals.”The scientists found their evidence by analyzing chromium (Cr) isotopes in ancient sediments from China, Australia, Canada, and the United States. Chromium is found in the Earth’s continental crust, and chromium oxidation is directly linked to the presence of free oxygen in the atmosphere.Specifically, the team studied samples deposited in shallow, iron-rich ocean areas, near the shore. They compared their data with other samples taken from younger locales known to have higher levels of oxygen.Oxygen’s role in controlling the first appearance of animals has long vexed scientists. “We were missing the right approach until now,” Planavsky said. “Chromium gave us the proxy.” Previous estimates put the oxygen level at 40% of today’s conditions during pre-animal times, leaving open the possibility that oxygen was already plentiful enough to support animal life.In the new study, the researchers acknowledged that oxygen levels were “highly dynamic” in the early atmosphere, with the potential for occasional spikes. However,they said, “It seems clear that there is a first-order difference in the nature of Earth surface Cr cycling” before and after the rise of animals.“If we are right, our results will really change how people view the origins of animals and other complex life, and their relationships to the co-evolving environment,” said co-author Tim Lyons of the University of California-Riverside. “This could be a game changer.”“There’s a lot of interest right now in a broader discussion surrounding the role that environmental stability played in the evolution of complex life, and we think our results are a significant contribution to that,” Reinhard said.16. The study discovered the rise of animals occurred earlier than the Proterozoic period.A. RightB. WrongC. Not mentioned17. Many researchers believe the oxygen level was high during pre-animal times.A. RightB. WrongC. Not mentioned18. The team was funded by several research institutes.A. RightB. WrongC. Not mentioned19. Genetic advancements triggered the rise of animals.A. RightB. WrongC. Not mentioned20. The samples studied in the research were collected in ocean areas.A. RightB. WrongC. Not mentioned21. The study revealed that chromium found in Earth’s continental crust remained stable before and after the rise of animals.A. RightB. WrongC. Not mentioned22. Tim Lyons liked to play computer games in his spare time.A. RightB. WrongC. Not mentioned第3部分：概括大意与完成句子(第23—30题，每题1分，共8分)下面的短文后有2项测试任务：(1)第23~26题要求从所给的6个选项中为第2～5段每段选择1个最佳标题;(2)第27～30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。