资源描述：
《2015年考研英语真题及解析》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、2015年全国硕士研究生入学考试英语一试题SectionIUseofEnglishDirections:Readthefollowingtext.Choosethebestword(s)foreachnumberedblankandmarkA,B,CorDonANSWERSHEET1.(10points)Wehavemoregenesincommonwithpeoplewepicktobeourfriendsthanwithstrangers.Thoughnotbiologicallyrelated,friendsareas"re
2、lated"asfourthcousins,sharingabout1%ofgenes.Thatis1astudypublishedfromtheUniversityofCaliforniaandYaleUniversityintheProceedingsoftheNationalAcademyofSciences,has2.Thestudyisagenome-wideanalysisconducted31932uniquesubjectswhich4pairsofunrelatedfriendsandunrelatedstran
3、gers.Thesamepeoplewereusedinboth5.While1%mayseem6,itisnotsotoageneticist.Asco-authorofthestudyJamesFowler,professorofmedicalgeneticsatUCSanDiegosays,"Mostpeopledonoteven7theirfourthcousinsbutsomehowmanagetoselectasfriendsthepeoplewho8ourkin."Theteam9developeda"friends
4、hipscore"whichcanpredictwhowillbeyourfriendbasedontheirgenes.Thestudyalsofoundthatthegenesforsmellweresomethingsharedinfriendsbutnotgenesforimmunity.Whythissimilarityinolfactorygenesisdifficulttoexplain,fornow.10,astheteamsuggests,itdrawsus11similarenvironmentsbutther
5、eismoretoit.Therecouldbemanymechanismsworkingintandemthat12usinchoosinggeneticallysimilarfriends13"functionalkinship"ofbeingfriendswith14!Oneoftheremarkablefindingsofthestudywasthatthesimilargenesseemtobeevolving15thanothergenes.Studyingthiscouldhelp16whyhumanevolutio
6、npickedpaceinthelast30,000years,withsocialenvironmentbeingamajor17factor.Thefindingsdonotsimplycorroboratepeople's18tobefriendthoseofsimilaret19backgrounds,saytheresearchers.ThoughallthesubjectsweredrawnfromapopulationofEuropeanextraction,carewastakento20thatallsubjec
7、ts,friendsandstrangersweretakenfromthesamepopulation.Theteamalsocontrolledthedatatocheckancestryofsubjects.11.[A]when[B]why[C]how[D]what2.[A]defended[B]concluded[C]withdrawn[D]advised3.[A]for[B]with[C]on[D]by4.[A]compared[B]sought[C]separated[D]connected5.[A]tests[B]o
8、bjects[C]samples[D]examples6.[A]insignificant[B]unexpected[C]unreliable[D]incredible7.[A]visit[B]miss[C]seek[D]know8.[A]rese
