江苏省2012年普通高校专转本统一考试

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1、2012年江苏省普通高校“专转本”统一考试2012年江苏省普通高校“专转本”统一考试大学英语本试卷分第I卷（客观题）和第II卷（主观题）两部分。满分150分。考试时间120分钟。卷中未注明作答对象的试题为英语类和非英语类学生共同作答的试题，注明作答对象的试题按规定作答。第Ⅰ卷PartIReadingComprehension(共20题，每题2分，共40分)Directions:Thereare4passagesinthispart.Eachpassageisfollowedbysomequestionsorunfinishedstatements

2、.Foreachofthemthereare4choicesmarkedA,B,CandD.YoushoulddecideonthebestchoiceandmarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecenter.PassageOneQuestions1to5arebasedonthefollowingpassage.Americanresearchershavedevelopedatechniquethatmaybecomeanimportanttool

3、infightingAIDS.ThetechniquestopstheAIDSvirusfromattackingitstarget-cellsinthebody'sdefensesystem.WhenAIDSvirusenterstheblood,itsearchesforbloodcellscalledT4lymphocytes（淋巴细胞）.ThevirusconnectstotheoutsideofT4lymphocytes,thenforcesitswayinside.Thereitdirectsthecells'genetic（基因的）

4、materialtoproducecopiesoftheAIDSvirus.ThisishowAIDSspreads.ResearchersthinktheymaybeabletostopAIDSfromspreadingbypreventingvirusfromconnectingtoT4cells.WhenAIDSvirusfindsaT4cell,itactuallyconnectstoapartofthecellcalledCD4protein.Researcherswanttofoolthevirusbyputtingcopiesorc

5、lonesoftheCD4proteinintotheblood.ThiswaytheAIDSviruswillconnecttotheclonedproteininsteadoftherealones.Scientistsusethegeneticengineeringmethodstomaketheclones.NormallyaCD4proteinremainsontheT4cellatalltimes.TheAIDSvirusmustgotoit.Inanewtechnique,however,theclonedCD4proteinisn

6、otconnectedtoacell.Itfloatsfreely,somanymorecanbeputintothebloodtokeeptheAIDSvirusawayfromrealCD4proteinsonT4cells.OnereportsaystheAIDSvirusconnectstotheclonedproteinsjustaseffectivelyastorealprotein.Thatreportwasbasedontestswithbloodcellsgrowninlabs.Thetechniqueisjustnowbegi

7、nningtobetestedinanimals.Ifsuccessful,itmaybetestedinhumanswithinayear.1.Thenewtechniquecan________.A.cureAIDSB.killtheAIDSvirusC.preventtheAIDSvirusfromspreadingD.producenewmedicinesforAIDS2.WhentheAIDSvirusenterstheblood,itisreproducedby________.A.theinsideofthevirusitselfB

8、.anybloodcellsinthebody第9页共9页2012年江苏省普通高校“专转本”统一考试C.theCD4proteinD.t