赠送题(三)阅读部分(2)

赠送题(三)阅读部分(2)

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时间:2018-04-07

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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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