2009年职称英语考试理工类C级试题

2009年度全国职称英语等级考试理工类（C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）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。1I'dverymuchliketoknowwhatyouraiminlifeis.AthoughtBideaCgoalDplan2ThepolicemenactedquicklybecauseliveswereatstakeAindangerBindifficultyCindespairDoutofcontrol3Practicallyallanimalscommunicateeitherthroughsoundsorthroughsoundlesscodes.ACertainlyBProbablyCAlmostDAbsolutely4MaryrarelyspeakstoSusan.AslowlyBseldomCweaklyDconstantly5I'mworkingwithaguyfromLondonAteacherBstudentCfriendDman6You'dbetterputthesedocumentsinasafeplaceAdarkBsecureCguardedDbanned7Thecourageousboyhasbeenthesubjectofmassivemediacoverage.AextensiveBcontinuousCinstantDquick8ThetownisfamousforitsmagnificentbuildingsAhigh-riseBmodernCancientDsplendid9Thegreatchangeofthecityastonishedallthevisitors.AsurprisedBscaredCexcitedDmoved10Jackpackedupallthethingshehadaccumulatedoverthelasttenyears.AfutureBfarCpastDnear11Wouldyoupleasecallmyhusbandassoonaspossible？AvisitBphoneCconsultDinvite12WehadalongconversationaboutherparentsAspeechBquestionCtalkDdebate13Thechairmanproposedthatwestopthemeeting.AstatedBannouncedCdemandedDsuggested14Obviouslythesepeoplecanbereliedoninacrisis.AlivedonBdependedonCbelievedinDjoinedin15ThereisalwaysexcitementattheOlympicGameswhenanathletebreaksarecordAbeatsBmaintainsCmatchesDtries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.RadiocarbonDatingNowadaysscientistscananswermanyquestionsaboutthepastthroughatechniquecalledradiocarbon（放射性碳），orcarbon-14，dating.Onekeytounderstandinghowandbysomethinghappenedistodiscoverwhenithappened.Radiocarbondatingwasdevelopedinthelate1940sbyphysicistWillardF.LibbyatheUniversityofChicago.Anatomofordinarycarbon，calledcarbon-12，hassixprotons（中子）andsixneutrons（质子）initsnucleus.Carbon-14，orC-14，isaradioactive，unstableformofcarbonthathastwoextraneutrons（原子核）。Itreturnstoamorestableformofcarbonthroughaprocesscalleddecay（衰减）。Thisprocessinvolvesthelossofheextraneutronsandenergyfromthenucleus.InLibby'sradiocarbondatingtechnique，theweakradioactiveemissions（放射）fromhisdecayprocessarecountedbyinstrumentssuchasaradiationdetectorandcounter.HedecayrateisusedtodeterminetheproportionofC-14atomsinthesamplebeingdated.Carbon-14isproducedintheEarth'satmospherewhennitrogen（氮）-14，orN-14，interactswithcosmicrays（宇宙射线）。ScientistsbelievesincetheEarthwasformed，themountofnitrogenintheatmospherehasremainedconstant.Consequently，C-14formationisthoughttooccurataconstantrate.NowtheratioofC-14toothercarbontomsintheatmosphereisknown.Mostscientistsagreethatthisratioisusefulfordatingitemsbacktoatleast50，000years.AlllifeonEarthismadeoforganicmolecules（分子）thatcontaincarbonatomscomingfromtheatmosphere.SoalllivingthingshaveaboutthesameratioofC-14atomstoothercarbonatomsintheirtissues（组织）。Onceanorganism（有机体）diesittopstakingincarboninanyform，andtheC-14alreadypresentbeginstodecay.OvertimetheamountofC-14inthematerialdecreases，andtheratioofC-14toothercarbontomsgoesdown.Intermsofradiocarbondating，thefewerC-14atomsinasample，theolderthatsampleis.16Nowadaysmanyscientistsdependonradiocarbonfordatingage-oldobjectsARightBWrongCNotmentioned17Theradiocarbondatingtechniqueisonlyabout40yearsoldARightBWrongCNotmentioned18AnatomofordinarycarbonhassixprotonsandeightneutronsARightBWrongCNotmentioned19Radarisusedtodeterminethecharacteristicsofradiocarbon.ARightBWrongCNotmentioned20Radiocarbonisreliableindatinganobjectbacktoatleast50，000years.ARightBWrongCNotmentioned21Whenanorganismdies，theC-14initbeginstodecay.ARightBWrongCNotmentioned22Thehalf-lifeofC-14isabout25，000years.ARightBWrongCNotmentioned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1～4段每段1选择个最佳标题；（2）第27～30题要求从所给的6个选项中为每个确定1个最佳选项。MeetYourMemory1Memoryissomethingthatcannotbeseen，touchedorweighed.Itisthoughttobeabstract.Itisasetofskillsratherthananobject.Neitheristhereasinglestandardforjudgingagoodorpoormemory.Thereareanumberofdifferentwaysinwhichapersonmayhavea'good'memory.2Memoryisgenerallyviewedasconsistingofthreestages：（1）acquisitionreferstolearningthematerial；（2）storagereferstokeepingthematerialinthebrainuntilitisneeded；and（3）retrieval（提取）referstogettingthematerialbackoutwhenitisneeded.3Memoryconsistsofatleasttwodifferentprocesses：short-termmemoryandlong-termmemory.Short-termmemoryhasalimitedcapacityandarapidforgettingrate.Itscapacitycanbeincreasedbychunking（组成大块），orgroupingseparatebitsofinformationintolargerchunks.Long-termmemoryhasanalmostunlimitedcapacity.4Onemeasureofmemoryisrecall，whichrequiresyoutoproduceinformationbysearchingthememoryforit.Inaidedrecall，youaregivencues（提示）tohelpyouproducetheinformation.Infree-recalllearningyourecallthematerialinanyorder；inseriallearningyourecallitintheorderitwaspresented；andinpaired-associatelearningyoulearnpairsofwordssothatwhenthefirstwordisgivenyoucanrecallthesecondword.Asecondmeasureofmemoryisrecognition，inwhichyoudonothavetoproducetheinformationfrommemory，butmustbeabletoidentifyitwhenitispresentedtoyou.Inathirdmeasureofmemory，relearning，thedifferencebetweenhowlongittoo