考研英语一完型填空专项强化真题试卷10(题后含答案及解析).pdfVIP

考研英语一完型填空专项强化真题试卷10(题后含答案及解析)

题型有：1.

Thoughnotbiologicallyrelated,friendsareasrelated“”asfourthcousins,

sharingabout1%ofgenes.Thatis【B1】______1astudy,publishedfromthe

UniversityofCaliforniaandYaleUniversityintheProceedingsoftheNational

AcademyofSciences,has【B2】______Thestudyisagenome-wideanalysis

conducted【B3】______1,932uniquesubjectswhich【B4】______pairsofunrelated

friendsandunrelatedstrangers.Thesamepeoplewereusedinboth【B5】______

While1%mayseem【B6】______,itisnotsotoageneticist.AsJamesFowler,

professorofmedicalgeneticsatUCSanDiego,says,”Mostpeopledonoteven【B7】

______theirfourthcousinsbutsomehowmanagetoselectasfriendsthepeoplewho

【B8】______ourkin.”Thestudy【B9】______foundthatthegenesforsmellwere

somethingsharedinfriendsbutnotgenesforimmunity.Whythissimilarityexistsin

smellgenesisdifficulttoexplain,fornow.【B10】______,astheteamsuggests,it

drawsustosimilarenvironmentsbutthereismore【B11】______it.Therecouldbe

manymechanismsworkingtogetherthat【B12】______usinchoosinggenetically

similarfriends【B13】______”functionalkinship”ofbeingfriendswith【B14】______!

Oneoftheremarkablefindingsofthestudywasthatthesimilargenesseemtobe

evolving【B15】______thanothergenes.Studyingthiscouldhelp【B16】______why

humanevolutionpickedpaceinthelast30,000years,withsocialenvironmentbeinga

major【B17】______factor.Thefindingsdonotsimplyexplainpeople’s【B18】

______tobefriendthoseofsimilar【B19】______backgrounds,saytheresearchers.

ThoughallthesubjectsweredrawnfromapopulationofEuropeanextraction,care

wastakento【B20】______thatallsubjects,friendsandstrangers,weretakenfromthe

samepopulation.

1．【B1】

A．when