第3练阅读＋完形＋语法填空Ⅰ.阅读理解A体裁：科普文话题：健康生活词数：350时间：6′Sleepinginaroomwithtoomuchlighthasbeenlinkedtoanincreasedriskofgainingweight，astudyshows.AteamattheInstituteofCancerResearchinLondonfoundwomenhadlargerwaistlinesiftheirbedroomwas“lightenoughtoseeacross”atnight.However，theysaythereisnotenoughevidencetoadvisepeopletobuythickercurtainsorturnofflights.Thewomenwereaskedtoratetheamountoflightintheirbedroomsatnightas：Lightenoughtoread.Lightenoughtoseeacrosstheroom，butnotread.Lightenoughtoseeyourhandinfrontofyou，butnotacrosstheroom.Toodarktoseeyourhandoryouwearamask.Theiranswerswerecomparedtoseveralmeasures(程度)ofobesity.Thesemeasureswereallhigherinwomenwithlighterrooms.ProfAnthonySwerdlowoftheInstituteofCancerResearchtoldtheBBC：“Inthisverylargegroupofpeoplethereisanassociationbetweenreportedlightexposureatnightandoverweightandobesity.Butthereisnotenoughevidencetoknowifmakingyourroomdarkerwouldmakeanydifferencetoyourweight.Theremightbeotherexplanationsfortheassociation，butthefindingsareinterestingenoughtoguaranteefurtherscientificinvestigation.”Thelightisdisrupting(干扰)thebodyclock，whichcomesfromourevolutionary(进化的)pastwhenwewereactivewhenitwaslightinthedayandrestingwhenitwasdarkatnight.Lightchangesmoods，physicalstrengthandeventhewayweprocessfoodina24－hourcycle.ProfDerk－JanDijk，fromtheSurreySleepCentre，saidtherewouldbenoharmintryingtomakebedroomsdarker.HetoldtheBBC：“Peopleingeneralarenotawareofthelightpresentintheirbedroom，Ithinkpeopleshouldassesstheirbedroomandseehoweasyitwouldbetomakeitdarker.”“Overallthisstudypointstotheimportanceofdarkness，”heconcluded.【语篇解读】明亮的卧室与肥胖有关系。1．Whatdoesthepassagemainlytalkabout?A．Peopleshouldbuythickercurtains.B．Lightbedroomsarelinkedtoobesity.C．Peopleshouldturnofflights.D．Darkbedroomsarelinkedtoobesity.答案B[主旨大意题。根据全文内容尤其是第一段“Sleepinginaroomwithtoomuchlighthasbeenlinkedtoanincreasedriskofgainingweight，astudyshows.”可知，本文主要讲述的是在光线太强的房间睡觉会有增加肥胖的风险。]2．Whatwillmaketheresearchersgoontheirscientificinvestigation?A．Lightexposure.B．Th