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去百度文库,查看完整内容>内容来自用户:乒下襯韶渤咸新2015考研英语真题Directions: Readthefollowingtext.Choosethebestword(s)foreachnumberedblankandmarkA,B,CorDonANSWERSHEET.(10points) Thoughnotbiologicallyrelated,friendsareas“related”asfourthcousins,sharingabout1%ofgenes.Thatis_(1)_astudy,ences,has__(2)_. Thestudyisagenome-wideanalysisconcted_(3)__1,932uniquesubjectswhich__(4)__pairsofunrelatedfriendsannrelatedstrangers.Thesamepeoplewereusedinboth_(5)_. While1%mayseem_(6)_,itisnotsotoageneticist.AsJamesFowler,professorofmedicalgeneticsatUCSanDiego,says,“Mostpeopledonoteven_(7)_ndsthepeoplewho_(8)_ourkin.” Thestudy_(9)_iendsbutnotgenesforimmunity.explain,fornow,_(10)_,astheteamsuggests,itdrawsustosimilarenvironmentsbutthereismore_(11)_it.Therecouldbemanymechanismsworkingtogetherthat_(12)_usinchoosin