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-1-EvaluationWarning:ThedocumentwascreatedwithSpire.Docfor.NET.Module5课下能力提升（十七）阅读理解ALastspring,IworkedinWashingtonD．C.ThereIvisitedFord’sTheaterandlookedatAbrahamLincoln’simpressivememorial(纪念碑)．ButattheNationalMuseumofHealthandMedicine,mynosecouldalmosttouchpiecesofthemanhimself:alockofhishair,piecesofhisskullandahandkerchiefwithhisbloodonit.AsIstoodthere,Iwondered,“CouldwecloneAbrahamLincoln？”SinceDollythesheepwasclonedin1996,scientistshaveclonedmammalsfrommicetomules,butwe’veneverclonedahuman.Maybeit’sahorribledesire,butifweeverdecidedtoclonesomeone,IwouldvoteforAbrahamLincoln.AfterAbrahamLincolnwasshot,hisdoctorsandfriendscollectedbitsofhisskullandbloodypiecesofclothforautopsy(尸检).Locksofhishairwerepassedaroundlikeholyrelics.LongbeforetheyknewaboutDNA,thesepiecesofLincolnrepresentedtheessence(本质)oftheman.Whilewedohavehisgenes,weprobablydon’thavetheentireDNAsequenceneededforcloning.SherylBernauer,labsupervisorfortheDNASequencingFacilityatUCDavis,saidthatwhencellsdieovertime,theDNAbecomeslessuseful.TheDNAinLincoln’s145yearoldbloodstainsandhairisprobablyfutileforcloning.“ThehairitselfwouldbeveryhardtogettheentireDNAsequencefromunlessyouhaveacompletefollicle(毛囊)，”Bernauersaid.Wedon’thaveanyofLincoln’sfollicles,sothat’sanogo.Still,it’sinterestingtothinkabouthowthedevelopmentofcloninghaschangedthewayweviewhumanremains.Humanshavealwayshonoredthedead,butnowweknowthat—inDNAatleast—partofthedeadliveson.语篇解读：作者思考了我们是否可以克隆出AbrahamLincoln的问题，但目前来说条件不允许。1．AttheNationalMuseumofHealthandMedicine,theauthor________.A．touchedpiecesofAbrahamLincolnB．lookedatAbrahamLincoln’smemorialC．wasaskedaboutcloningAbrahamLincolnD．sawsomethingbelongingtoAbrahamLincoln’sbody-2-解析：选D细节理解题。根据第一段的“ButattheNationalMuseumofHealthandMedicine...alockofhishair,piecesofhisskullandahandkerchiefwithhisbloodonit.”可知，作者在那里看到了一些林肯身上的东西。2．WhywerebitsofAbrahamLincoln’sskullandbloodypiecesofclothcollected?A．Torememberhim.B．Tolearnabouthisdeath.C．Tostoreforcloninginthefuture.D．Tobepassedaroundlikesaintlyrelics.解析：选B推理判断题。根据第三段的“hisdoctorsandfriendscollectedbitsofhisskullandbloodypiecesofclothforautopsy(尸检)”可知，是为了了解AbrahamLincoln的死因。3．Whatdoestheunderlinedword“futile”inParagraph4mean?A．Useless.B．Interesting.C．Exciting.D．Necessary.解析：选A词义猜测题。根据画线词后的“Thehairitselfwouldbeveryhard...acompletefollicle(毛囊)”可知，该词是指那些血迹和头发里的DNA可能已经“没用”了。4．It’simpliedinParagraph4thatacompletefollicle________.A．doesn’thavecellsthatdieovertimeB．isinAbrahamLincoln’sremainsC．doesn’ttellwellaboutsomeone’sgenesD．hasone’sentireDNAsequence解析：选D推理判断题。根据第四段的“ThehairitselfwouldbeveryhardtogettheentireDNAsequencefromunlessyouhaveacompletefollicle”可知，完整的毛囊里面有完整的基因序列。BIfyouwanttostayyoung,sitdownandhaveagoodthink.ThisistheresearchfindingofateamofJapanesedoctors,whosaythatmostofourbrainsarenotgettingenoughexercise—andasaresult,weareageingunnecessarilysoon.ProfessorTaijuMatsuzawawantedtofindoutwhyotherwisehealthyfarmersinnorthernJapanappearedtobelosingtheirabilitytothinkandreasonatarelativelyearlyage,andhowtheprocessofageingcouldbesloweddown.WithateamofcolleaguesatTokyoNationalUniversity,hesetaboutmeasuringbrainvolumesofathousandpeopleofdifferentagesandvaryingoccupations.-3-Computertechnologyenabledtheresearcherstoobtainprecisemeasurementsofthevolumeofthefrontandsidesectionsofthebrain,whichrelatetointellect(智力)andemotion,anddeterminethehumancharacter.(Therearsectionofthebrain,whichcontrolsfunctionslikeeatingandbreathing,doesnotcontractwithage,andonecancontinuelivingwithoutintellectualoremotionalfaculties.)Contractionoffrontandsideparts—ascellsdieoff—wasobservedinsomesubjectsintheirthirties,butitwasstillnotevidentinsomesixtyyearoldsandseventyyearolds.Matsuzawaconcludedfromhisteststhatthereisasimpleremedytothecontractionnormallyassociatedwithage—usingthehead.Thefindingsshowingeneraltermsthatcontractionofthebrainbeginssoonerinpeopleinthecountrythaninthetowns.Thoseleastatrisk,saysMatsuzawa,arelawyers,followedbyuniversityprofessorsanddoctors.Whitecollarworkersdoingroutineworkingovernmentofficesare,however,aslikelytohaveshrinkingbrainsasthefarmworkers,busdriversandshopassistants.Matsuzawa’sfindingsshowthatthinkingcanpreventthebrainfromshrinking.Bloodmustcirculateproperlyintheheadtosupplythefreshoxygenthebraincellsneed.“Thebestwaytomaintaingoodbloodcirculationisthroughusingthebrain，”hesays,“Thinkhardandengageinconversation.Don’trelyonpocketcalculators.”语篇解读：一项研究表明多思考、多用脑会让人老得慢一些。5．Theteamofdoctorswantedtofindout________.A．whycertainpeopleagesoonerthanothersB．howtomakepeoplelivelongerC．thesizeofcertainpeople’sbrainsD．whichpeoplearemostintelligent解析：选A细节理解题。由第二段可知医生们想要弄清楚为什么一些人比其他人老得更快。6．Onwhataretheirresearchfindingsbased?A．AsurveyoffarmersinnorthernJapan.B．Testsperformedonathousandoldpeople.C．Thestudyofbrainvolumesofdifferentpeople.D．Thelatestdevelopmentofcomputertechnology.解析：选C细节理解题。由第三段“...hesetaboutmeasuringbrainvolumesofathousandpeopleofdifferentagesandvaryingoccupations.”可知选C。-4-7．Thedoctors’testshowsthat________.A．ourbrainsshrinkaswegrowolderB．thefrontsectionofthebraindoesnotshrinkC．sixty