往年考研试题及解析(英语一).doc

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1、往年考研试题及解析（英语一）2015研究生入学统一考试试题（英语一）　　Section1UseofEnglish　　Directions:Readthefollowingtext.Choosethebestword(s)foreachnumberedblankandmark[A],[B],[C]or[D]onANSWERSHEET1.(10points)　　Thoughnotbiologicallyrelated,friendsareas"related"asfourthcousins,sharingabout1%ofgenes.That

2、is  1  astudypublishedfromtheUniversityofCaliforniaandYaleUniversityintheProceedingsoftheNationalAcademyofSciences,has  2 .　　Thestudyisagenome-wideanalysisconducted  3  1932uniquesubjectswhich  4  pairsofunrelatedfriendsandunrelatedstrangers.Thesamepeoplewereusedinboth  5

3、 .　　While1%mayseem   6  ,itisnotsotoageneticist.Asco-authorofthestudyJamesFowler,professorofmedicalgeneticsatUCSanDiegosays,"Mostpeopledonoteven  7  theirfourthcousinsbutsomehowmanagetoselectasfriendsthepeoplewho   8   ourkin."　　Theteamalsodevelopeda"friendshipscore"which

4、canpredictwhowillbeyourfriendbasedontheirgenes.　　Thestudy  9   foundthatthegenesforsmellweresomethingsharedinfriendsbutnotgenesforimmunity.Whythissimilarityinolfactorygenesisdifficulttoexplain,fornow.   10 ,astheteamsuggests,itdrawsustosimilarenvironmentsbutthereismore  1

5、1  it.Therecouldbemanymechanismsworkingintandemthat  12   usinchoosinggeneticallysimilarfriends  13  than"functionalkinship"ofbeingfriendswith  14 !　　Oneoftheremarkablefindingsofthestudywasthatthesimilargenesseemtobeevolving15   thanothergenes.Studyingthiscouldhelp   16  

6、 whyhumanevolutionpickedpaceinthelast30,000years,withsocialenvironmentbeingamajor   17  factor.　　Thefindingsdonotsimplycorroboratepeople's   18   tobefriendthoseofsimilar 19   backgrounds,saytheresearchers.ThoughallthesubjectsweredrawnfromapopulationofEuropeanextraction,c

7、arewastakento  20  thatallsubjects,friendsandstrangersweretakenfromthesamepopulation.Theteamalsocontrolledthedatatocheckancestryofsubjects.　　1   Awhat   Bwhy   Chow   Dwhen　　2   Adefended   Bconcluded   Cwithdrawn   Dadvised　　3   Afor   Bwith   Cby   Don　　4   Aseparated  

8、 Bsought   Ccompared   Dconnected　　5   Atests   Bobjects   Csamples   Dexamples　　6   Ainsignific