以下是小编给大家提供的2019年12月模拟题，希望能够帮助你更好的备考。

Acontroversyeruptedinthescientificcommunityinearly1998overtheuseofDNA(deoxyribonucleicacid)fingerprintingincriminalinvestigations.DNAfingerprintingwasintroducedin1987asamethodtoidentifyindividualsbasedonapatternseenintheirDNA,themoleculeofwhichgenesaremade.DNAispresentineverycellofthebodyexceptredbloodcells.DNAfingerprintinghasbeenusedsuccessfullyinvariousways,suchastodeterminepaternitywhereitisnotclearwhothefatherofaparticularchildis.However,itisintheareaofcriminalinvestigationsthatDNAfingerprintinghaspotentiallypowerfulandcontroversialuses.DNAfingerprintingandotherDNAanalysistechniqueshaverevolutionizedcriminalinvestigationsbygivinginvestigatorspowerfulnewtoolsintheattempttotroveguilt,notjustestablishinnocence.Whenusedincriminalinvestigations,aDNAfingerprintpatternfromasuspectiscomparedwithaDNAfingerprintpatternobtainedfromsuchmaterialashairsorbloodfoundatthesceneofacrime.AmatchbetweenthetwoDNAsamplescanbeusedasevidencetoconvictasuspect.Thecontroversyin1998stemmedformareportpublishedinDecember1991bypopulationgeneticistsRichardC.LewontinofHarvardUniversityinCambridge,Mass.,andDanielL.HartlcalledintoquestionthemethodstocalculatehowlikelyitisthatamatchbetweentwoDNAfingerprintsmightoccurbychancealone.Inparticular,theyarguedthatthecurrentmethodcannotproperlydeterminethelikelihoodthattwoDNAsampleswillmatchbecausetheycamefromthesameindividualratherthansimplyfromtwodifferentindividualswhoaremembersofthesameethnicgroup.LewontinandHartlcalledforbettersurveysofDNApatternsmethodsareadequate.Inresponsetotheircriticisms,populationgeneticistsRanajitChakrabortyoftheUniversityofTexasinDallasandKennethK.KiddofYaleUniversityinNewHaven,Conn.,arguedthatenoughdataarealreadyavailabletoshowthatthemethodscurrentlybeingusedareadequate.InJanuary1998,however,thefederalBureauofInvestigationandlaboratoriesthatconductDNAtestsannouncedthattheywouldcollectadditionalDNAsamplesformvariousethnicgroupsinanattempttoresolvesomeofthesequestions.And,inApril,aNationalAcademyofSciencescalledforstrictstandardsandsystemofaccreditationforDNAtestinglaboratories.

1.BeforeDNAfingerprintingisused,suspects____.

A.wouldhavetoleavetheirfingerprintsforfurtherinvestigations

B.wouldhavetosubmitevidencefortheirinnocence

C.couldeasilyescapeconvictionofguilt

D.coldbeconvictedofguiltaswell

2.DNAfingerprintingcanbeunreliablewhen____.

A.themethodsusedforblood-cellcalculationarenotaccurate

B.twodifferentindividualsofthesameethnicgroupmayhavethesameDNAfingerprintingpattern

C.amatchisbychanceleftwithfingerprintsthathappentobelongtotwodifferentindividuals

D.twodifferentindividualsleavetwoDNAsamples.

3.TogeneticistslikeLewontinandHartl,thecurrentmethod____.

A.isnotsoconvincingastoexcludethelikelihoodthattwoDNAsamplescannevercomefromtwoindividuals

B.isarguablebecausetwoindividualsofthesameethnicgrouparelikelytohavethesameDNApattern.

C.Isnotbasedonadequatescientifictheoryofgenetics

D.Istheoreticallycontradictorytowhattheyhavebeenstudying

4.TheattitudeoftheFederalBereauofInvestigationshowsthat____.

A.enoughdataareyettobecollectedformvariousethnicgroupsto/confirm/itheunlikelihoodoftwoDNAsamplescomingfromtwoindividualmembers

B.enoughdataofDNAsamplesshouldbecollectedto/confirm/ithatonlyDNAsamplesformthesamepersoncanmatch

C.enoughdataareyettobecollectedfromvariousethnicgroupstodeterminethelikelihoodoftwodifferentDNAsamplescomingformthesameperson

D.additionalsamplesfromvariousethnicgroupsshouldbecollectedtodeterminethattwoDNAsamplesareunlikelytocomefromthesameperson

5.NationalAcademyofSciencesholdsthestancethat____.

A.DNAtestingshouldbesystematized

B.OnlyauthorizedlaboratoriescanconductDNAtesting

C.Theacademyonlyisauthorizedtoworkoutstandardsfortesting

D.TheacademyhastherighttoaccreditlaboratoriesforDNAtesting

答案：CBABB