大学英语四级阅读理解模拟题.docx

大学英语四级阅读理解模拟题2015大学英语四级阅读理解模拟题Stonetools,animalbonesandanincisedmammothtuskfoundinRussia’sfrigidfarnorthhaveprovidedwhatarchaeologistssayisthefirstevidencethatmodernhumansorNeanderthalslivedintheArcticmorethan30,000yearsago,atleast15,000yearsearlierthanpreviouslythought.AteamofRussianandNorwegianarchaeologists,describingthediscoveryintoday’sissueofthejournalNature,saidthecampsite,atMamontovayaKurya,ontheUraRiverattheArcticCircle,wasthe“oldestdocumentedevidenceforhumanpresenceatthishighlatitude.”DigginginthebedofanoldriverchannelclosetotheUralMountains,theteamuncovered123mammalbones,includinghorse,reindeerandwolf.“Themostimportantfind,”theysaid,wasafour-footmammothtuskwithgroovesmadebychoppingwithasharpstoneedge,“unequivocallytheworkofhumans.”Thetuskwascarbon-datedatabout36,600yearsold.Plantremainsfoundamongtheartifactsweredatedat30,000to31,000years.Otherarchaeologistssaidtheanalysisappearedtobesound.Buttheycautionedthatitwasdifficult,whendealingwithriverbeddeposits,tobesurethatartifactshadnotbecomejumbledoutoftheirtrueplace,andthustime,inthegeologiclayers.Theyquestionedwhetherthediscovererscouldreliablyconcludethatthestonetoolswereinfactcontemporarywiththebones.Butinacommentaryaccompanyingthearticle,Dr.JohnA.J.GowlettoftheUniversityofLiverpoolinEnglandwrote,“Althoughtherearequestionstobeanswered,theartifactsillustrateboththecapacityofearlyhumanstodotheunexpected,andthevalueofarchaeologists’researchinginunlikelyareas.”?ThediscovererssaidtheycouldnotdeterminefromthefewstoneartifactswhetherthesitewasoccupiedbyNeanderthals,hominidswhobythenhadalonghistoryashuntersinEuropeandwesternAsia,orsomeofthefirstanatomicallymodernhumanstoreachEurope.?Inanycase,otherarchaeologistssaid,thefindingscouldbesignificant.IfthesetoolmakerswereNeanderthals,thefindingssuggestedthatthesehumanrelatives,whobecameextinctafter30,000yearsago,weremorecapableandadaptablethantheyaregenerallygivencreditfor.LivingintheArcticclimatepresum