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1、2015-12-大学英语六级阅读真题及答案（一套）Asitis,sleepissoundervaluedthatgettingbyonfewerhourshasbecomeabadgeo?Plus,weliveinaculturethat36tothelatehourgrocerystoreto?shoppingsitethatneverclose.Itsnosurprise,then,thatmorethanhalfofAmericanadultsgetthe7to9hoursofshut~eyeeverynightas37bysleepexperts.Whetherornotwecanc
2、atchuponsleep-ontheweekend,say-isahotly38amongsleepresearchers.Thelatestevidencesuggeststhatwhileitisn't39,itmight?whenLiu,theUCLAsleepresearcherandprofessorofmedicine,brought40sleep-restpeopleintothelabforaweekendofsleepduringwhichtheylaggedabout10hourspernight.?showed4lintheabilityofinsulin（胰岛素）t
3、oprocessbloodsugar.Thatsuggests?upsleepmayundosomebutnotallofthedamagethatsleep42causes,whichisencouraging?givenhowmanyadultsdon’tgetthehourstheyneedeachnight.Still,Liuisn't43toendthehabitofsleepinglessandmakingupforitlater.Sleepingpi11s,whilehelpfulforsome,arenot44aneffectiveremedyeither.“Asleepin
4、gpillwill45oneareaofthebrain,butthere’snevergoingtobeaperfectsleepingpill,becauseyoucouldn?treallyreplicate(复制)thedifferentchemicalsmovinginandoutofdifferentparts?thebraintogothroughthedifferentstagesofsleep,saysDr.NancyCollop,directoroftheEm?UniversitySleepCenter.A)alternativelyl)negotiatedB)cater
5、sj)pierceC)chronicallyK)presumptionD)debatedL)readyE)deprivationM)recommendedF)idealN)surpassesG)improvementsO)targetH)necessarily答案：BMDFOGELHJClimatechangemayberea1,butit’sstillnoteasybeinggreenHowdoweconvinceourinnercavemantobegreener?Weasksomeoutstandingsocialscientists.A)Theroadtoclima.tehellis
6、pavedwithourgoodintentions.Politiciansmaytacklepolluterswhilescientistsdobattlewithcarbonemissions.Butthemostpervasiveproblemislessobvious:ourownbehaviour.Wegetdistractedbeforewecanturndowntheheating.Webreakourpromisenottoflyafterhearingaboutaneighbor’sriptoIndia.U1timately,wecan’tbebotheredtochang
7、eourattitude.Fortunatelyfortheplanet,socialscienceandbehavioraleconomicsmaybeab1etodothatforus.B)Despitemournfulpolarbearsandcartsshowingcarbonemissionssoaring,motpeoplefindithardtobelievethatglobalwarmingw
