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1、Section1UseofEnglishDirections:Readthefollowingtext.Choosethebestword(s)foreachnumberedblankandmark[A],[B],[C]or[D]onANSWERSHEET1.(10points)Thoughnotbiologicallyrelated,friendsareasrelatedasfourthcousins,sharingabout1%ofgenes.Thatis1astudypublishedfromtheUnive
2、rsityofCaliforniaandYaleUniversityintheProceedingsoftheNationalAcademyofSciences,has2.Thestudyisagenome-wideanalysisconducted31932uniquesubjectswhich4pairsofunrelatedfriendsandunrelatedstrangers.Thesamepeoplewereusedinboth5.While1%mayseem6,itisnotsotoagenetici
3、st.AsJamesFowler,professorofmedicalgeneticsatUCSanDiego,says,Mostpeopledonoteven7theirfourthcousinsbutsomehowmanagetoselectasfriendsthepeoplewho8ourkin.Thestudy9foundthatthegenesforsmellweresomethingsharedinfriendsbutnotgenesforimmunity.Whythissimilarityinolfa
4、ctorygenesisdifficulttoexplain,fornow.10Perhaps,astheteamsuggests,itdrawsustosimilarenvironmentsbutthereismore11it.Therecouldbemanymechanismsworkingintandemthat12usinchoosinggeneticallysimilarfriends13thannalkinshipofbeingfriendswith14!Oneoftheremarkablefindin
5、gsofthestudywasthatthesimilargenesseemtobeevolving15thanothergenes.Studyingthiscouldhelp16whyhumanevolutionpickedpaceinthelast30,000years,withsocialenvironmentbeingamajor17factor.Thefindingsdonotsimplycorroboratepeoples18tobefriendthoseofsimilar19backgrounds,s
6、aytheresearchers.ThoughallthesubjectsweredrawnfromapopulationofEuropeanextraction,carewastakento20thatallsubjects,friendsandstrangersweretakenfromthesamepopulation.Theteamalsocontrolledthedatatocheckancestryofsubjects.SectionIIReadingComprehension1、What2、Concl
7、uded3、On4、Compared5、Samples6、Insignificant7、Know8、Resemble149、Also10、Perhaps11、To12、Drive13、Ratherthan14、Benefits15、Faster16、understand17、Contributory18、Tendency19、Ethnic20、seePartAReadthefollowingfourtexts.Answerthequestionsbeloweachtextbychoosing[A],[B],[C]o
8、r[D].MarkyouranswersonANSWERSHEET1.(40points)原标题：2015年考研英语一真题（完整版）TEXT1KingJuanCarlosofSpainonceinsistedkingsdontabdicate,theydieintheirsleep.Butembarrassingscandalsandthepopularit
