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1、如果您需要使用本文档，请点击下载按钮下载!2015年职称英语理工类A级考试真题及答案第一部分：词汇选项1.I will nottoleratethat sort of behavior in my class.A.controlB.observeC.regulateD.accept答案：D2.She showed a naturalaptitudehard to accept.A.senseB.talentC.flavorD.taste答案：B3.Most people findrejectionhard to accept.A.excuseB.clientC.destinyD.refusal
2、答案：C4. The organization wasboldenough to face the press.A.pleasedB.powerfulC.braveD.sensible答案：C5.They were locked inmortalcmbat.A.deadlyB.openC.actualD.active如果您需要使用本文档，请点击下载按钮下载!答案：A6. We were attracted by thelureof quick money.A.amountB.supplyC.sumD.temp答案：C7.The procedures were perceived as comp
3、lex and lesstransparent.A.clearB.necessaryC.specialD.correct答案：A8.The Stock Exchange is inturmoilfollowing a huge wave of selling.A.ServiceB.dangerC.disorderD.threat答案：C9.He believes that Europe must change or it willperish.A.surviceB.lastC.dieD.move答案：C10.There was asimultaneoustrial taking place i
4、n the next build.A.fairB.fullC.coexistingD.public答案：C11.They promotesimulationof ethnic group into the main-streasm culture.A.policyB.valueC.equalityD.intergration答案：D12.A saleman如果您需要使用本文档，请点击下载按钮下载!scardinalrule is to satisfy customers.A.principalB.officalC.simpleD.legal答案：A13.I mustcomplimentyou
5、on your handling of a very difficult situation.A.silenceB.praiseC.assureD.complain答案：B14.We live for years in aperpetualstate of fear.A.emotionB.nervousC.terribileD.Contimuous答案：D15.The starving children were a pathectic sight.A.commonB.unexpectedC.unforgettableD.pitiful答案：D第二部分：阅读判断Lackof Oxygen De
6、layed the Rise of Animals on Earth如果您需要使用本文档，请点击下载按钮下载!Scientistshave long speculated as to why animal species didnt flourish sooner,oncesufficient oxygen covered the Earths surface.Animals began to prosper at theend of the Proterozoic period,about 800 million years ago but what about thebillion-yea
7、r stretch before that,when most researchers think there also wasplenty of oxygen?Well,it seems the air wasnt so great then,after all.Ina study published Oct.31 in Science,Yale researcher Noah Planavsky and hiscolleagues found that oxygen levels during the boring billionperiod wereonly 0.1% of what t
8、hey are today.In other words,Earths atmosphere couldnthave supported a diversity of creatures,no matter what genetic advancementswere poised to occur.There is no questionthat genetic and ecological innovation must ultimately be behind the rise ofanimals,but it is equally unavoidable that animals nee
9、d a certain level ofoxygen,said Planavsky,co-lead author of the research along with ChristopherReinhard of the Georgia Institute of Technology.Were providing the firstevidence that oxygen levels were low enough during this period to potentiallyprevent the rise of animals.”Thescientists found their e
10、vidence by analyzing chromium (Cr) isotopes in ancientsediments from China,Australia,Canada,and the United States.Chromium isfound in the Earths continental crust,and chromium oxidation is directlylinked to the presence of free oxygen in the atmosphere.Specifically,the team studied samples deposited
11、 in shallow,iron-rich ocean areas,near theshore.They compared their data with other samples taken from younger localesknown to have higher levels of oxygen.Oxygensrole in controlling the first appearance of animals has long vexed scientists.We were missing the right approach until now,Planavsky said
12、.Chromium gaveus the proxy.Previous estimates put the oxygen level at 40% of todaysconditions during pre-animal times,leaving open the possibility that oxygenwas already plentiful enough to support animal life.如果您需要使用本文档，请点击下载按钮下载!Inthe new study,the researchers acknowledged that oxygen levels were
13、highlydynamicin the early atmosphere,with the potential for occasional spikes.However,they said,It seems clear that there is a first-order difference inthe nature of Earth surface Cr cyclingbefore and after the rise of animals.If we are right,ourresults will really change how people view the origins
14、 of animals and othercomplex life,and their relationships to the co-evolving environment,saidco-author Tim Lyons of the University of California-Riverside.This could be agame changer.”Fundingsources for the research included the NASA Exobiology Program and the NationalScience Foundations Earth-Life
15、Transitions program,awarded to Planavsky,Reinhard,and Lyons.Theother members of the research team included Xiangli Wang,a postdoctoral fellowat Yale; Thomas Johnson,of the University of Illinois; Danielle Thomson,ofCarleton University; Peter McGoldrick,of the University of Tasmania; andWoodward Fischer,of the California Institute of Technology.16.The study discovered the rise of animals occurred earlier than the Proterozoicperiod.A.Right B.Wrong C.Not mentioned17.Many researche
