高二英语完形填空复习专项训练5

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1、Passage5Areyouasocialbutterfly,ordoyoupreferbeingattheedgeofagroupoffriends?Eitherway,yourgenesandevolutionmayplayamajor1,USresearchersreportedonMonday.Whileitmaycomeasnosuiprisethatgenesmayhelpexplain2somepeoplehavemanyfriendsandothershave3：theresearcherssaid,theirfindingsgojustalittlef

2、artherthanthat."Someofthethingswefindare4uncommon,”saidNicholasChristakisofHarvardUniversityinMassachusetts,whohelped5thestudy."Wefindthathowinterconnectedyourfriendsare6onyourgenes・Somepeoplehavefourfriendswhoknoweachotherandsomepeoplehavefourfriendswhodon't7eachother.8DickandHarryknowe

3、achotherdependsonTom's9Christakissaidinatelephoneinterview.ChristakisandcolleagueJamesFowleroftheUniversityofCaliforniaSanDiegoare10knownfortheirstudiesthatshowobesity,smokingandhappinessspreadinnetworks.Forthisstudy,theyandChristopherDawesofUCSDusednationaldatathat11morethan1,000identic

4、al同卵的）andfraternal（异卵白勺）twins'genes・Because12shareanenvironment,thesestudiesaregoodforshowingtheimpactthatgeneshave13variousthings,becauseidenticaltwins14alltheirgeneswhilefraternaltwinssharejusthalf.nWefoundthereappearstobeagenetictendencytointroduceyourfriends15eachother,"Christakissai

5、d.Therecouldbegood,evolutionaryreasons16this・Peopleinthemiddleofasocialnetworkcouldbesecrettousefulgossip,17thelocationoffoodorgoodinvestmentchoices.Buttheywouldalsobeatriskofcatchingeffectsfromallsidesinwhichcasetheadvantagewould18morecautioussocialbehavior,theywroteintheProceedingsofth

6、eNationalAcademyofSciences・HItmaybethatnaturalselectionis19notjustthingslikewhetherornotwecanresistthecommoncold,butalsowhoitisthatwearegoingtocomeinto20withJFowlersaidinastatement.()1.A.roleB.ruleC.rollD.pole()2.A.whereB.whyC.whenD.how()3.A.afewB.severalC.fewD.some()4.A.generallyB.mainl

7、yC.mostlyD.frankly()5.A.conductB.introduceC.conflictD.instruct()6.A.dependsB.basesC.takeD.put()7.A.seeB.inspectC.learnD.know()8.A.WhenB.WhereC.WhatD.Whether)9.A.genesB.brainsC.appearancesD.figures()10.A.muchB.bestC.veryD.least()11.A.recordedB.illustratedC.describedD.compa