2015年全国硕士研究生入学统一考试英语试题SectionI:UseofEnglishDirections:Readthefollowingtext.Choosethebestword(s)foreachnumberedblankandmarkA,B,CorDonANSWERSHEET1.(10points)Thoughnotbiologicallyrelated,friendsareas“related”asfourthcousins,sharingabout1%ofgenes.Thatis1astudy,publishedfromtheUniversityofCaliforniaandYaleUniversityintheProceedingsoftheNationalAcademyofSciences,has2.Thestudyisagenome-wideanalysisconducted31,932uniquesubjectswhich4pairsofunrelatedfriendsandunrelatedstrangers.Thesamepeoplewereusedinboth5.While1%mayseem6,itisnotsotoageneticist.AsJamesFowler,professorofmedicalgeneticsatUCSanDiego,says,“Mostpeopledonoteven7theirfourthcousinsbutsomehowmanagetoselectasfriendsthepeoplewho8ourkin.”Thestudy9foundthatthegenesforsmellweresomethingsharedinfriendsbutnotgenesforimmunity.Whythissimilarityexistsinsmellgenesisdifficulttoexplain,fornow.10,astheteamsuggests,itdrawsustosimilarenvironmentsbutthereismore11it.Therecouldbemanymechanismsworkingtogetherthat12usinchoosinggeneticallysimilarfriends13”functionalkinship”ofbeingfriendswith14!Oneoftheremarkablefindingsofthestudywasthatthesimilargenesseemtobeevolving15thanothergenes.Studyingthiscouldhelp16whyhumanevolutionpickedpaceinthelast30,000years,withsocialenvironmentbeingamajor17factor.Thefindingsdonotsimplyexplainpeople’s18tobefriendthoseofsimilar19backgrounds,saytheresearchers.ThoughallthesubjectsweredrawnfromapopulationofEuropeanextraction,carewastakento20thatallsubjects,friendsandstrangers,weretakenfromthesamepopulation.1.[A]when[B]why[C]how[D]what2.[A]defended[B]concluded[C]withdrawn[D]advised3.[A]for[B]with[C]on[D]by4.[A]compared[B]sought[C]separated[D]connected5.[A]tests[B]objects[C]samples[D]examples6.[A]insignificant[B]unexpected[C]unreliable[D]incredible7.[A]visit[B]miss[C]seek[D]know8.[A]resemble[B]influence[C]favor[D]surpass9.[A]again[B]also[C]instead[D]thus10.[A]Meanwhile[B]Furthermore[C]Likewise[D]Perhaps11.[A]about[B]to[C]from[D]like12.[A]drive[B]observe[C]confuse[D]limit13.[A]accordingto[...
