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1、SectionI UseofEnglish Directions: Readthefollowingtext.Choosethebestword(s)foreachnumberedblankandmarkA,B,CorDonANSWERSHEET.(10points) Thoughnotbiologicallyrelated,friendsareas“related”asfourthcousins,sharingabout1%ofgenes.Thatis_(1)_astudy,published fromtheUniversityof
2、CaliforniaandYaleUniversityintheProceedingsoftheNationalAcademyofSciences,has__(2)_. Thestudyisagenome-wideanalysisconducted_(3)__1,932uniquesubjectswhich__(4)__pairsofunrelated friendsandunrelatedstrangers.Thesamepeoplewereusedinboth_(5)_. While1%mayseem_(6)_,itisnotsotoa
3、geneticist.AsJamesFowler,professorofmedicalgeneticsatUCSanDiego,says,“Mostpeopledonoteven_(7)_theirfourthcousinsbutsomehowmanagetoselectas friendsthepeoplewho_(8)_ourkin.” Thestudy_(9)_found thatthegenesforsmellweresomethingsharedinfriendsbutnotgenesforimmunity.Whythissimil
4、arityexistsinsmellgenesisdifficulttoexplain,for now,_(10)_,asthe team suggests,itdrawsustosimilarenvironmentsbutthereismore_(11)_it.Therecouldbemanymechanismsworkingtogetherthat_(12)_usinchoosinggeneticallysimilarfriends_(13)_”functionalKinship”ofbeingfriendswith_(14)_! One
5、oftheremarkablefindingsofthestudywas thesimilargenesseemtobeevolution_(15)_thanothergenes Studyingthiscouldhelp_(16)_whyhumanevolutionpickedpaceinthelast 30,000years,withsocialenvironmentbeingamajor_(17)_factor. Thefindingsdonotsimplyexplainpeople’s_(18)_tobefriend thoseofs
6、imilar_(19)_backgrounds,saytheresearchers.ThoughallthesubjectsweredrawnfromapopulationofEuropeanextraction,carewastakento_(20)_that allsubjects,friendsandstrangers,weretakenfromthesamepopulation. 1.[A]when [B]why [C]how [D]what 2.[A]defended [B]concluded [C]withd
7、rawn [D]advised 3.[A]for [B]with [C]on [D]by 4.[A]compared [B]sought [C]separated [D]connected 5.[A]tests [B]objects [C]samples [D]examples 6.[A]insignificant [B]unexpected [C]unbelievable [D]incredible 7.[A]visit [B]miss [C]seek [D]know
8、 8.[A]resemble [B]influence [C]favor [D]surpass 9.[A]again [B]also
