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ID:8777033
大小:302.50 KB
页数:77页
时间:2018-04-07
《赠送题(三)阅读部分(2)》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、阅读部分SectionⅡReadingComprehensionPartADirections:Readthefollowingfourtexts.AnswerthequestionsbeloweachtextbychoosingA,B,CorD.MarkyouranswersonANSWERSHEET1.(40points)十三、基因技术在刑侦中的应用Violentcriminalswithsomethingtohidehavemorereasonthanevertobeparanoidaboutatapontheshoulderwhichcouldsendthemtojail.Q
2、ueenslandpoliceareworkingthroughabacklogofunsolvedmurderswithsomedramaticsuccess.Greatercooperationbetweenthepublicandvariouslawenforcementagenciesisplayingarole,butnewgenetic-testingtechniquesaretherealkeytoprovidingthevitalevidencetomountaprosecution.Evidenceleftbehindatthesceneofanymurderisg
3、uaranteedtooutlivethepersonwholeftit.Ablood,salivaortissuesampleinthesizeofapin,keptdryandoutofsunlight,willlastseveralthousandyears.Fromit,scientificanalysisnowcantellaccuratelythesexofthepersonwholeftit.Whenmatchedagainstasamplefromacrimesuspect,itcanindicatewithmillion-to-onecertaintywhether
4、thesamplescomefromthesamesource.OnlytwinsshareidenticalDNA.Sopreciseisthetechnologyifthebiologicalparentsofasuspectagreetoprovideasample,forensicscientistscanworkouttherestforthemselveswithoutcooperationfromthesuspect.QueenslandforensicscientistshavebeenusingtheDNAtestingtechnologysince1992,and
5、lastyeartheywererecognizedinternationallyfortheircompetenceinpositiveindividualidentification.Thatispartofthereason20ofQueensland’smostpuzzlingunsolvedmurdersdatingto1932arebeingactivelyinvestigated.Therealsohavebeenseveralrecentarrestsforunsolvedmurders.Forensicevidencewasinstrumentalincharges
6、beinglaidoverthebashingdeathofwaitressTashaDoutyonBramptonIslandin1983.Douty’sblood-splattered,nakedbodywasfoundonanudesunbathingbeachatDinghyBayontheisland.Footprintsinthesandindicatedthatthekillerhadgrappledwiththe21-year-oldmotherwhohadfledupthebeachbeforebeingcaughtandbeatentodeath.Accordin
7、gtoLeoFreney,thesupervisingforensicscientistattheJohnTongeCentreatBrisbane’sGriffithUniversity,DNAtestinghasbecomeaninvaluabletoolforpolice.Itsuseisinidentifyingandrejectingsuspects.Infact,hesays,iteliminatesmorepeoplethanitconvic
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