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1、2015年考研英語一真題原文及答案解析完整版SectionIUseofEnglishDirections:Readthefollowingtext.Choosethebestword(s)foreachnumberedblankandmarkA,B,CorDonANSWERSHEET.(10points)Thoughnotbiologicallyrelated,friendsareas“related”asfourthcousins,sharingabout1%ofgenes.Thatis_(1)_astudy,publishedf
2、romtheUniversityofCaliforniaandYaleUniversityintheProceedingsoftheNationalAcademyofSciences,has__(2)_.Thestudyisagenome-wideanalysisconducted_(3)__1,932uniquesubjectswhich__(4)__pairsofunrelatedfriendsandunrelatedstrangers.Thesamepeoplewereusedinboth_(5)_.While1%maysee
3、m_(6)_,itisnotsotoageneticist.AsJamesFowler,professorofmedicalgeneticsatUCSanDiego,says,“Mostpeopledonoteven_(7)_theirfourthcousinsbutsomehowmanagetoselectasfriendsthepeoplewho_(8)_ourkin.”Thestudy_(9)_foundthatthegenesforsmellweresomethingsharedinfriendsbutnotgenesfor
4、immunity.Whythissimilarityexistsinsmellgenesisdifficulttoexplain,fornow,_(10)_,astheteamsuggests,itdrawsustosimilarenvironmentsbutthereismore_(11)_it.Therecouldbemanymechanismsworkingtogetherthat_(12)_usinchoosinggeneticallysimilarfriends_(13)_”functionalKinship”ofbein
5、gfriendswith_(14)_!Oneoftheremarkablefindingsofthestudywasthesimilargenesseemtobeevolution_(15)_thanothergenesStudyingthiscouldhelp_(16)_whyhumanevolutionpickedpaceinthelast30,000years,withsocialenvironmentbeingamajor_(17)_factor.Thefindingsdonotsimplyexplainpeople’s_(
6、18)_tobefriendthoseofsimilar_(19)_backgrounds,saytheresearchers.ThoughallthesubjectsweredrawnfromapopulationofEuropeanextraction,carewastakento_(20)_thatallsubjects,friendsandstrangers,weretakenfromthesamepopulation.1.[A]when[B]why[C]how[D]what【答案】[D]what【解析】該題考查的是語法知識(shí)
7、。根據(jù)句子結(jié)構(gòu)和選項(xiàng)的特點(diǎn)，可以判斷出空格處應(yīng)填從屬連詞引導(dǎo)從句;再根據(jù)句子的內(nèi)容，可以看出該從句是一項(xiàng)研究的相關(guān)內(nèi)容(what)，不是指研究的時(shí)間(when)，原因(why)和方式(how)，因此，該題的答案為what。2.[A]defended[B]concluded[C]withdrawn[D]advised【答案】[B]concluded【解析】從此題所在的句子的前后內(nèi)容可以判斷出，thatis_______中的that是指第一句話的內(nèi)容(朋友與我們基因上的相關(guān)性)，很顯然是研究得出的結(jié)論。因此，答案為concluded。3
8、.[A]for[B]with[C]on[D]by【答案】[C]on【解析】根據(jù)空格所在句子的內(nèi)容(研究對(duì)1932分獨(dú)特的受試者進(jìn)行分析)判斷出進(jìn)行分析的對(duì)象是1932uniquesubjects。conductanalysison…是
