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时间:2020-03-15
《往年考研试题及解析(英语一).doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
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
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