文档介绍：Directions:(s)foreachnumberedblankandmarkA,B,CorDonANSWERSHEET.(10points)Thoughnotbiologicallyrelated,friendsareasrelatednasfourthcousins,sharingabout1%(l)_astudy,publishedfromtheUniversityofCaliforniaandYaleUniversityintheProceedingsoftheNationalAcademyofSciences,has_(2)-wideanalysisconducted_(3)_1,932uniquesubjectswhich(4)(5)%mayseem_(6)_,,icsatUCSanDiego,says,"Mostpeopledonoteven_(7)_theirfourthcousinsbutsomehowmanagetoselectasfriendsthepeoplewho_(8)_ourkin.”Thestudy_(9),fornow,_(10)_,astheteamsuggests,itdrawsustosimilarenvironmentsbutthereismore_(lTherecouldbemanymechanismsworkingtogetherthat_(12)cticallysimilarfriends_(13)_^functionalKinship”ofbeingfriendswith_(14)_!Oneoftheremarkablefindingsofthestudywasthesimilargenesseemtobeevolution_(15)thanothergenesStudyingthiscouldhelp_(16)_whyhumanevolutionpickedpaceinthelast30,000years,withsocialenvironmentbeingamajor_(17)'s_(18)_tobefriendthoseofsimilar_(19)_backgrounds,,carewastakento_(20)_thatallsubjects,friendsandstrangers,.[A]when[B]why[C]how[D]what2.[A]defended[B]coneluded[C]withdrawn[D]advised3.[A]for[B]with[C]on[D]by4.[pared[B]sought[C]separated[D]connected5.[A]tests[B]s[C]samples[D][B]unexpected[C]unbelievable[D]incredible7.[A]visit[B]miss[C]seek[D]know8.[A]resemble[B]influence[C]fcivor[D]surpeiss9.[A]again[B]also[C]instead[D]thus[A]Meanwhile[B]Furthermore[C]Likewise[D]Perhaps[A]about[B]to[C]from[D]like[A]drive[B]observe[C]confuse[D]limit[A]accordingto[B]ratherthan[C]regardlessof[D]alongwith[A]chances[B]responses[C]missions[D]benefits