2012江苏专转本英语真题及答案

江苏省2012年普通高校专转本统一英语考试第一卷（共100分）PartIReadingComprehension(共20题，每题2分，共40分)PassageOneQuestions1to5arebasedonthefollowingpassage.AmericanresearchershavedevelopedatechniquethatmaybecomeanimportanttoolinfightingAIDS.ThetechniquestopstheAIDSvirusfromattackingitstarget-cellsinthebody'sdefensesystem.WhenAIDSvirusenterstheblood,itsearchesforbloodcellscalledT4lymphocytes（淋巴细胞）.ThevirusconnectstotheoutsideofT4lymphocytes,thenforcesitswayinside.Thereitdirectsthecells'genetic（基因的）materialtoproducecopiesoftheAIDSvirus.ThisishowAIDSspreads.ResearchersthinktheymaybeabletostopAIDSfromspreadingbypreventingvirusfromconnectingtoT4cells.WhenAIDSvirusfindsaT4cell,itactuallyconnectstoapartofthecellcalledCD4protein.ResearcherswanttofoolthevirusbyputtingcopiesorclonesoftheCD4proteinintotheblood.ThiswaytheAIDSviruswillconnecttotheclonedproteininsteadoftherealones.Scientistsusethegeneticengineeringmethodstomaketheclones.NormallyaCD4proteinremainsontheT4cellatalltimes.TheAIDSvirusmustgotoit.Inanewtechnique,however,theclonedCD4proteinisnotconnectedtoacell.Itfloatsfreely,somanymorecanbeputintothebloodtokeeptheAIDSvirusawayfromrealCD4proteinsonT4cells.OnereportsaystheAIDSvirusconnectstotheclonedproteinsjustaseffectivelyastorealprotein.Thatreportwasbasedontestswithbloodcellsgrowninlabs.Thetechniqueisjustnowbeginningtobetestedinanimals.Ifsuccessful,itmaybetestedinhumanswithinayear.1.Thenewtechniquecan________.A.cureAIDSB.killtheAIDSvirusC.preventtheAIDSvirusfromspreadingD.producenewmedicinesforAIDS2.WhentheAIDSvirusenterstheblood,itisreproducedby________.A.theinsideofthevirusitselfB.anybloodcellsinthebodyC.theCD4proteinD.thegeneticmaterialofT4cells3TheAIDSvirusconnectstoclonedproteinsinsteadoftotherealonesbecause________.A.theclonedproteinsstayontheT4cellsB.theclonedproteinscanfloatfreelyinthebloodC.itconnectstoclonedproteinsmoreeffectivelythantotherealonesD.theclonedproteinsaremadebygeneticengineeringmethods4.WhichofthefollowingstatementsisNOTtrue?A.Thenewtechniquehasbeentestedinlabs.B.Thenewtechniqueisbeingtestedinanimals.C.Thenewtechniquemaybetestedinhumans.D.Thenewtechniqueisnowunderclinicaltest.5Whichofthefollowingcouldbethebesttitleofthispassage?A.AIDS---aFatalDisease.B.ANewTechniqueinfightingAIDS.C.AReportontheSpreadofAIDSVirus.D.TheTechniqueofClonedCD4Protein.PassageTWOQuestions6to10arebasedonthefollowingpassage.Duringtheearlyearsoflastcentury,wheatwasseenastheverylifebloodofWesternCanada.Whenthecropsweregood,theeconomywasgood;whenthecropsfailed,therewasdepression.Peopleoncitystreetswatchedtheyieldsandthepriceofwheatwithalmostasmuchfeelingasiftheyweegrowers.Themarketingofwheatbecameanincreasinglyfavoritetopicofconversation.Warsetthestageforthemostdramaticeventsinmarketingthewesterncrop.Foryears,farmersmistrustedspeculative（投机的）grainsellingascarriedonthroughtheWinnipegGrainExchange.Wheatpricesweregenerallylowintheautumn,butfarmerscouldnotwaitformarketstoimprove.Ithadhappenedtoooftenthattheysoldtheirwheatsoonafterharvestwhenfarmdebtswerecomingdue(到期)，onlytoseepricesrisingandspeculatorsgettingrich.Onvariousoccasions,producergroupsaskedforfirmercontrols,butgovernmentshadnowishtobecomeinvolved,atleastnotuntilwartimewheatpricesthreatenedtorunwild.Anxioustocheck(控制)inflation(通货膨胀)andrisinglivingcosts,thefederalgovernmentappointedaboard(董事会)ofgrainsupervisorstohandledeliveriesfromthecropsof1917and1918.GrainExchangetradingwassuspended(暂停)andfarmerssoldatpricesfixedbytheboard.Tohandlethecropof1919,thegovernmentappointedthefirstCanadianWheatBoard,withfullauthoritytobuy,sell,andsetprices.6.Theauthorusestheterm“lifeblood”(Line1,para1.)toindicatethatwheatwas_______.A.difficulttoproduceinlargequantitiesB.waseasilyaffectedbyanimalsandplantsC.essentialtothehealthofthecountryD.expensivetogatherandtransport7.Accordingtothepassage,mostfarmers’debtshadtobepaid__________.A.whentheautumnharvesthadjustbeencompletedB.becausewheatpriceswerehighC.assoonastheWinnipegGrainExchangedemandedpaymentD,whencropfailurecauseddepression8.Accordingtothepassage,wheatpricesbecameuncontrolledbecauseofconditionscausedby_____.A.farmersB.supervisorsC.weatherD.war9.Theword“check”(Line1,Para.3)couldbestbereplacedbywhichofthefollowing?A.controlB.investigateC.financeD.reinforce10.Accordingtothepassage,apreliminarystepinthecreationoftheCanadianWheatBoardwastheappointmentof______.A.theWinnipegGrainExchangeB.aboardofsupervisorsC.severalproducergroupsD.anewgovernmentPassageThreeQuestions10to15arebasedonthefollowingpassage.YellowstoneParkisvisitedbytwomillionpeopleeverysummerandistheoldest,largestandmostvisitedwildernessintheworld.Allarewelcomeandareinvitedonarrivaltoleavetheircarsandexploreonfoot.Yellowstone,anationalparkforever100years,liesintheStateofWyoming,totheeastoftheRockyMountain.ItisalsointhecenteroftheNorthAmericancontinent,midwaybetweentheequatorandtheNorthPole,ataheightofover2300meters.Theverycoldwinterinthisareaclosestheparkaroundmid-NovemberandlastsuntilAprilorevenMay.InFebruarythetemperaturefallsaslowas60Fdegreebelowfreezing,andtheanimalsthatspendwinterintheparkarebesta