2015研究生入学考试 英语一 真题 答案 解析

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1、2015研究生入学考试英语一真题答案解析Section1UseofEnglish　　Directions:Readthefollowingtext.Choosethebestword(s)foreachnumberedblankandmark[A],[B],[C]or[D]onANSWERSHEET1.(10points)　　Thoughnotbiologicallyrelated,friendsareas"related"asfourthcousins,sharingabout1%ofgenes.Thatis1astudypublishedfromtheUniversity

2、ofCaliforniaandYaleUniversityintheProceedingsoftheNationalAcademyofSciences,has2.　　Thestudyisagenome-wideanalysisconducted31932uniquesubjectswhich4pairsofunrelatedfriendsandunrelatedstrangers.Thesamepeoplewereusedinboth5.　　While1%mayseem6,itisnotsotoageneticist.Asco-authorofthestudyJamesFow

3、ler,professorofmedicalgeneticsatUCSanDiegosays,"Mostpeopledonoteven7theirfourthcousinsbutsomehowmanagetoselectasfriendsthepeoplewho8ourkin."　　Theteamalsodevelopeda"friendshipscore"whichcanpredictwhowillbeyourfriendbasedontheirgenes.　　Thestudy9foundthatthegenesforsmellweresomethingsharedinfr

4、iendsbutnotgenesforimmunity.Whythissimilarityinolfactorygenesisdifficulttoexplain,fornow.10,astheteamsuggests,itdrawsustosimilarenvironmentsbutthereismore11it.Therecouldbemanymechanismsworkingintandemthat12usinchoosinggeneticallysimilarfriends13than"functionalkinship"ofbeingfriendswith14!　　

5、Oneoftheremarkablefindingsofthestudywasthatthesimilargenesseemtobeevolving15thanothergenes.Studyingthiscouldhelp16whyhumanevolutionpickedpaceinthelast30,000years,withsocialenvironmentbeingamajor17factor.　　Thefindingsdonotsimplycorroboratepeople’s18tobefriendthoseofsimilar19backgrounds,sayth

6、eresearchers.ThoughallthesubjectsweredrawnfromapopulationofEuropeanextraction,carewastakento20thatallsubjects,friendsandstrangersweretakenfromthesamepopulation.Theteamalsocontrolledthedatatocheckancestryofsubjects.　　1AwhatBwhyChowDwhen　　2AdefendedBconcludedCwithdrawnDadvised　　3AforBwithCbyD

7、on　　4AseparatedBsoughtCcomparedDconnected　　5AtestsBobjectsCsamplesDexamples　　6AinsignificantBunexpectedCunreliableDincredible　　7AvisitBmissCknowDseek　　8AsurpassBinfluenceCfavorDresemble　　9AagainBalsoCinsteadDthus　　10AMeanwhileBFurthermoreCLikewiseDPerhap