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1、2020年考研英语一真题及答案详细解析2020年考研英语一真题及答案详细解析2020年全国硕士研究生入学统一考试英语（一）试题及答案详细解析SectionIUseofEnglish:Directions:Readthefollowingtext.Choosethebestword(s)foreachnumberedblankandmarkA,B,CorDontheANSWERSHEET.(10points)Thoughnotbiologicallyrelated,friendsareas“related”asfou
2、rthcousins,sharingabout1%ofgenes.Thatis_(1)_astudy,publishedfromtheUniversityofCaliforniaandYaleUniversityintheProceedingsoftheNationalAcademyofSciences,has__(2)_. Thestudyisagenome-wideanalysisconducted_(3)__1,932uniquesubjectswhich__(4)__pairsofunrelatedfri
3、endsandunrelatedstrangers.Thesamepeoplewereusedinboth_(5)_. While1%mayseem_(6)_,itisnotsotoageneticist.AsJamesFowler,professorofmedicalgeneticsatUCSanDiego,says,“Mostpeopledonoteven_(7)_theirfourthcousinsbutsomehowmanagetoselectasfriendsthepeoplewho_(8)_ourki
4、n.” Thestudy_(9)_foundthatthegenesforsmellweresomethingsharedinfriendsbutnotgenesforimmunity.Whythissimilarityexists此资料由网络收集而来，如有侵权请告知上传者立即删除。资料共分享，我们负责传递知识。insmellgenesisdifficulttoexplain,fornow,_(10)_,astheteamsuggests,itdrawsustosimilarenvironmentsbutther
5、eismore_(11)_it.Therecouldbemanymechanismsworkingtogetherthat_(12)_usinchoosinggeneticallysimilarfriends_(13)_”functionalKinship”ofbeingfriendswith_(14)_! Oneoftheremarkablefindingsofthestudywasthesimilargenesseemtobeevolution_(15)_thanothergenesStudyingthisc
6、ouldhelp_(16)_whyhumanevolutionpickedpaceinthelast30,000years,withsocialenvironmentbeingamajor_(17)_factor. Thefindingsdonotsimplyexplainpeople’s_(18)_tobefriendthoseofsimilar_(19)_backgrounds,saytheresearchers.ThoughallthesubjectsweredrawnfromapopulationofEu
7、ropeanextraction,carewastakento_(20)_thatallsubjects,friendsandstrangers,weretakenfromthesamepopulation. 1.[A]when[B]why[C]how[D]what 2.[A]defended[B]concluded[C]withdrawn[D]advised 3.[A]for[B]with[C]on[D]by 4.[A]compared[B]sought[C]separated[D]connected
8、5.[A]tests[B]objects[C]samples[D]examples 6.[A]insignificant[B]unexpected[C]unbelievable[D]incredible 7.[A]visit[B]miss[C]seek[D]know 8.[A]resemble[B]influence[C]favor[D]surpass
