《二零一六年考研英语一真题及答案(大师兄版)》.pdf

@大师兄英语·2015年考研英语一 2015年全国硕士研究生入学统一考试英语一试题 SectionI UseofEnglish Directions: Readthe followingtext. Choosethebestword(s) foreachnumberedblank andmark [A], [B], [C]or [D]on theANSWERSHEET.(10points) Thoughnotbiologicallyrelated,friendsareas“related”asfourthcousins,sharingabout1%ofgenes.Thatis 1 astudy,publishedfromtheUniversityofCaliforniaandYaleUniversityintheProceedingsoftheNational AcademyofSciences,has 2 . Thestudyisagenome-wideanalysisconducted 3 1,932uniquesubjectswhich 4 pairsofunrealt- edfriendsandunrelatedstrangers.Thesamepeoplewereusedinboth 5 . While 1%may seem 6 ,itisnot soto ageneticist.As JamesFowler,professor ofmedical genetics at UC SanDiego,says,“Mostpeopledonoteven 7 theirfourthcousinsbutsomehowmanagetoselectasfrie- ndsthepeoplewho 8 ourkin.” Thestudy 9 foundthatthegenesforsmellwere somethingsharedinfriendsbutnotgenesforimmu- nity.Whythis similarityexistsinsmellgenesisdifficulttoexplain,fornow. 10 ,astheteam suggests,it drawsustosimilarenvironmentsbutthereismore 11 it.Therecouldbemanymechanismsworkingtoget- herthat 12 usinchoosinggeneticallysimilarfriends 13 “functionalkinship”ofbeing friendswith 14 ! One ofthe remarkable findings ofthe studywas that the similargenes seemtobe evolving 15 than othergenes. Studyingthis couldhelp 16 why human evolutionpicked pace inthe last 30,000years, with socialenvironmentbeingamajor 17 factor. Thefindingsdonotsimplyexplainpeople’s 18 tobefriendthoseofsimilar 19 backgrounds,say theresearchers.ThoughallthesubjectsweredrawnfromapopulationofEuropeanextraction,carewastakento 20 thatallsubjects,friendsandstrangers,weretakenfromthesamepopulation. 1.[A]when [B]why [C]how [D]what 2.[A]defended [B]concluded [C]withdrawn [D]advis