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1、Mankindisstillevolving(进化),阅读答案 Mankindisstillevolving(进化),accordingtoarecentstudybyateamofscientistsledbyaYaleUniversityevolutionarybiologist.Butresearchsuggeststhatthenaturalselectionprocessisnolongerdrivenbysurvival,perhapsbecauseofdifferencesinwomen’sfertility(能生育性). T
2、heteamexamined2,238womeninFramingham,Massachusetts,theUSandstudiedthemedicalhistoriesofsome14,000residentssince1948. Theyfoundthatstrong,slightlyfatwomentendtohavemorechildren.Andifthistrendweretocontinueforthenext10generations,by2409theaveragewomanwouldbe2cmshorter,1kgheav
3、ier,andhaveahealthierheart. Thatrateofevolutionisprettysimilartowhatweseeinplantsandanimals.Humans_don’_t_seem_to_be_any_exception,_theteamsaid. Otherrecentgeneticresearchbacksupthatbelief.OnestudybyJohnHawks,ananthropologistattheUniversityofWisconsinatMadison,foundthatsom
4、e1,800humangenevariations(变异)arecommoninrecentgenerationsbecauseofevolution.Amongthechangesaremutations(突变)thatallowpeopletodigestmilkorresistmalaria(疟疾)andothersthatgovernbraindevelopment. SincetheIndustrialRevolution,modernhumanshavegrowntallerandstronger.It’seasytoassume
5、thatevolutionismakinghumansfitter.ButaccordingtoanthropologistPeterMcAllister,thecontemporarymalehasevolvedphysicallyinto“thesorriestexampleofmaleeverontheplanet”.AnaverageNeanderthalwoman,McAllisternotes,couldhavebeatArnoldSchwarzeneggerinanarmwrestling(腕力)match.AndearlyAus
6、tralianAboriginescouldeasilydefeatUsainBoltina100mdash. However,DouglasEwbank,oftheUniversityofPennsylvania,saysthatculturalfactorstendtohaveamuchgreaterimpactthannaturalselectiononfuturegenerations,sopeopletendtoignoreevolution’seffects. And,despiteevidenceindicatingevol
7、utionstillworks,SteveJones,anevolutionarybiologistatUniversityCollegeLondon,thinksthattheimpactofevolutiononhumansisnotthemostimportant.“Whatmakeshumanswhatweareisinourminds,inoursociety,andnotinourevolution,”saidJones. [语篇解读]科学家们发现人类还在不断地进化,但是他们认为自然选择对人类进化的影响已经没那么大了。 1.Wh
8、atdoestheunderlinedsentence“Humansdon’tseemtobeanyexception”imply? A.Plant