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1、WORD格式整理版Directions: Readthefollowingtext.Choosethebestword(s)foreachnumberedblankandmarkA,B,CorDonANSWERSHEET.(10points) Thoughnotbiologicallyrelated,friendsareas“related”asfourthcousins,sharingabout1%ofgenes.Thatis_(1)_astudy,publishedfromtheUniversit
2、yofCaliforniaandYaleUniversityintheProceedingsoftheNationalAcademyofSciences,has__(2)_. Thestudyisagenome-wideanalysisconducted_(3)__1,932uniquesubjectswhich__(4)__pairsofunrelatedfriendsandunrelatedstrangers.Thesamepeoplewereusedinboth_(5)_. While1%may
3、seem_(6)_,itisnotsotoageneticist.AsJamesFowler,professorofmedicalgeneticsatUCSanDiego,says,“Mostpeopledonoteven_(7)_theirfourthcousinsbutsomehowmanagetoselectasfriendsthepeoplewho_(8)_ourkin.” Thestudy_(9)_foundthatthegenesforsmellweresomethingsharedinfr
4、iendsbutnotgenesforimmunity.Whythissimilarityexistsinsmellgenesisdifficulttoexplain,fornow,_(10)_,astheteamsuggests,itdrawsustosimilarenvironmentsbutthereismore_(11)_it.Therecouldbemanymechanismsworkingtogetherthat_(12)_usinchoosinggeneticallysimilarfrien
5、ds_(13)_”functionalKinship”ofbeingfriendswith_(14)_! Oneoftheremarkablefindingsofthestudywasthesimilargenesseemtobeevolution_(15)_thanothergenesStudyingthiscouldhelp_(16)_whyhumanevolutionpickedpaceinthelast30,000years,withsocialenvironmentbeingamajor_(1
6、7)_factor. Thefindingsdonotsimplyexplainpeople’s_(18)_tobefriendthoseofsimilar_(19)_backgrounds,saytheresearchers.ThoughallthesubjectsweredrawnfromapopulationofEuropeanextraction,carewastakento_(20)_thatallsubjects,friendsandstrangers,weretakenfromthesam
7、epopulation. 1.[A]when[B]why[C]how[D]what 2.[A]defended[B]concluded[C]withdrawn[D]advised 3.[A]for[B]with[C]on[D]by 4.[A]compared[B]sought[C]separated[D]connected学习指导参考WORD格式整理版 5.[A]tests[B]s[C]samples[D]examples 6.[A]insignificant[B]unexpected[C]u
8、nbelievable[D]incredible 7.[A]visit[B]miss[C]seek[D]know 8.[A]resemble[B]influence[C]favor[D]surpass 9.[A]again[B]also[C]instead[D]thus 10.[A]Meanwhile[B]Furthermore[C]Likewise[D]Perhaps 11.[A]about[B]to[C]from
