课时作业(三十四)[选修7Unit4Sharing](限时：35分钟)Ⅰ.单项填空1．Warmbloodedanimalshavetheabilityto________bodyheatexactlytomaintaintheiridealtemperaturedespitechangingweather.A．respondB．attachC．adjustD．expose2．Thehospital________well,wheremanywounded________everyday.A．isoperated;operationB．operates;areoperatedonC．operates;areoperatedD．operates;operateson3．TVturnoffweek，________millionsofpeoplearoundtheworldparticipateeveryyear，triestoencouragepeopletoturnonlife.A．inwhichB．onwhichC．whichD．when4．WithChina________intheworldtrademorefrequently，theworldeconomyisdevelopingmorerapidlyandsteadily.A．participatingB．toparticipateC．participatedD．beingparticipated5．—Idon'treallylikeJames.Whydidyouinvitehim?—Don'tworry.He________come.Hesaidhewasn'tcertainwhathisplanswere.A．mustnotB．neednotC．wouldnotD．mightnot6．Ifyou________amistakeinreviewingthereport，pleasebringittomyattention.A．comealongB．comeacrossC．comearoundD．comeabout7．Ronny'ssteps________，andtherewasamomentofabsolutesilence.A．dieddownB．diedawayC．diedoffD．diedout8．Thenewsgaveusafalsesenseof________sothatwefailedtoseethedangerwascoming.A．securityB．authorityC．responsibilityD．variety9．Youcan'tseewellthroughatelescopeunlessitis________correctlytoyoursight.A.accustomedB.adjustedC.admittedD.adopted10．—Don'tyouknowyourcomputerhasbeeninfectedwithviruses?—Really?Nowonderithasn't________aswellasbefore.A．appearedB．operatedC．managedD．controlled11．Leavehimalone.Heis________himselftothepreparationsforthecomingexam.A．adjustingB．applyingC．losingD．engaging12．—Youdidn'ttakethehighspeedtrainwiththeleadingletter“G”toShanghai?—________.Istilltookthe“D”train,whichsavedmemorethan50yuan.A．Yes,Ididn'tB．No,IdidC．Yes,IdidD．No,Ididn't13．Thecourseisamustforallthose________mothertongueisnotEnglish.A．whoseB．whoC．thatD．which14．—WhereweretheBlacksthen?—Theygotcaughtinatrafficjam；otherwise________．A．theywouldbehereB．theyhavebeenhereC．theyhadbeenhereD．theywouldhavebeenhere15．Itisoftensaidthatthejoyoftravelingis________inarrivingatyourdestination________inthejourneyitself.A．/；butB．/；orC．not；orD．not；butⅡ.阅读理解AStartingthedayonaneggcouldkeepyourbloodpressure(血压)undercontrol，researchsuggests.Scientistshaveshownthateggsproduceproteinswithafunctionsimilartothatofpowerfulbloodpressureloweringdrugs.Theresearch，fromtheUniversityofAlbertainCanada，showedthatwheneggscomeincontactwithstomachenzymes(酶)theyproduceaproteinthatactsinthesamewayasACE_inhibitors，butmoreworkisneededtoshowtheeffectsoutsidealabandinthehumanbody.Earlierthismonth，Britishresearchersdeclaredthat，contrarytopopularbeliefs，itishealthytogotoworkonanegg.Theyconcludedthatthetypeofcholesterol(胆固醇)foundineggshaslittleeffectonincreasingheartdiseaserisks.ResearcherProfessorBruceGriffin，fromtheUniversityofSurrey，said,“Thewrongbeliefslinkingeggeatingtohighbloodcholesterolandheartdiseasemustbecorrected.Theamountoffatinourdiethasaneffectonbloodcholesterolthatisseveraltimesgreaterthantherelativelysmallamountsofcholesterolfoundineggs.TheUKpublicdonotneedtobelimitingthenumberofeggstheyeat.Theycanbeencouragedtoincludetheminahealthydietastheyareoneofnature'smostnutritiousfoods.”TheBritishHeartFoundationdroppeditsthreeeggaweeklimitin2005.However，almosthalfofBritonsbelievethelimitstillapplies.16．Fromthetextweknow...
