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1、2014高考英语阅读理解基础精品练习题（58）及答案阅读理解DNA(Deoxyribonucleicacid)isoneofthemostimportantdiscoveriesinscience.DNAistheplanforthehumanbeing,asablueprintistheplanforabuilding.DNAmakesapersonlookthewayhedoes.Aperson’sDNAcomesfromamixingofhisparents’DNA.That’swhyachildlookslik
2、ehisparents.But,besidescontrollingthingssuchasheightandhaircolor,DNAcanalsogivepeoplediseases.ScientistsarenowstudyingDNAtocurediseases.Intheseventies,scientistsdevelopedaprocesscalledrecombinant(重新组合)orRDNA.Althoughitsoundsdifficulttounderstand,RDNAsimplymeanst
3、akingDNAfromoneanimalorplantandputtingitintoanother.Bydoingso,scientistscancreatenewbeings.Insodoing,scientistscanbetterunderstandDNA,especiallywhatpartsofDNAdowhat.AftertheyunderstandDNA,scientistscanbegintocurediseases.Often,thenewbeingcreatedwillitselfbethecu
4、re.Besidescuringdiseases,RDNAresearchcanalsodootherthings.Forexample,scientistsinJapanhavealreadycreated“super－trees”.Treeshelphumans,becausetheytakeCO2,whichpoisonshumans,fromtheairandturnitintooxygen,whichletshumansbreathe.“Super－trees”dothistoo,butdoitmuchfas
5、ter.AsthingssuchascarsandfactorieshavealreadyputmuchCO2inthearea,“super－trees”arebadlyneeded.Unfortunately,thereisaseriousdangerinRDNAresearch.Scientistswanttocreateanimalstocureolddiseases,butthesenewanimalsmayalsocreatenewdiseases.Itwillbeaseriousproblemifthea
6、nimalsescapefromthesciencelaboratoryandintonature.Astheseanimalsarenotnatural,theymaylet_loosemanynewpowerfuldiseases.Asaresult,RDNAresearchwillcreatemanysolutions(解决方案),butitwillalsocreatemanyproblems.5．Fromthepassage,wecanknowthataboylookslikehisparentsbecause
7、______.A.heissonofhisparentsB.hisparents’DNAdecideshisappearanceC.hehasreceivedDNAfromhisfatherorhismotherD.scientistshaveputsomeofhisparents’DNAintohim6．Whatdoestheunderlinedexpression“letloose”probablymean?A.let...gofreeB.getridofC.absorbD.survive7．Whatisthebe
8、sttitleforthepassage?A.TheDANResearchinJapan.B.ANewWayofDNAResearchinJapan.C.TheCausesandEffectsofDNAResearch.D.TheAdvantagesandDisadvantagesofRDNA.8．Thefollowingstat
