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1、北京电大开放英语3作业题一．英语知识运用（30%）从A、B、C、D四个选项中，选出可以填入空白处的最佳选项．1.Whenwecameoutoftheclassroom,itwas____withrain.A)runningB)droppingC)fallingD)pouring2.Shehadthreesons,all____becamedoctors.A)ofwhomB)whichC)ofwhichD)who3.Beforedoingit,you'dbetter_____theadvantagesyouc
2、anbenefitfrom.A)lookoutB)sumupC)careforD)giveup4.He_____overtheletterandwalkedawaywithoutaword.A)sawB)glancedC)watchedD)observed5.Thiscaseisratherheavy,butthatoneis____light.A)fairlyB)barelyC)merelyD)scarcely6.Ifailedinmyjob.IfonlyI____tomyparents.A)listen
3、edB)hadlistenedC)havelistenedD)wouldlistento7.Thismorningourwatersupplywas_____becausethepipeburst.A)cutoutB)cutoffC)cutdownD)cutacross8.Scientistwillhaveto____newmethodsofincreasingtheworld'sfoodsupplyinordertofeedmorehungrypeople.A)comeupwithB)keepupwith
4、C)putupwithD)catchupwith9.______fromthemoon,ourearthwatercoveringseventypercentofitssurface,appearsa“blueplanet”.A.SeenB.seeingC.HavingseenD.Tosee10.____everybodyishere,let'sworkoutthetravelingplan.A)NowthatB)InthatC)SothatD)That11.Itistimethekids______.A)
5、gotobedB)havegonetobedC)wenttobedD)hadgonetobed12.Eleveno'clockis____foraboyofhisagetostayup.A)asolatehourB)solateanhourC)anhourtoolateD)toolateanhour13.Ican’t______youdothat.A.askB.letC.requireD.allow14.TheAmericanignoranceofAustralianliteraturewasoften__
6、__byabeliefthatAustraliaisasisolatedculturallyasitisgeographicallyA)accompaniedB)carriedC)separatedD)prevented15.Myideaisthattheinstrument_____againbeforeitisused.A)istestedB)willbetestedC)shouldbetestedD)tests二.完形填空(15%)阅读下面短文，从短文后所给各题的四个选项（A、B、C、D中选出能填入相
7、应空白处的最佳选项．Fromthebeginning,waterhasfurnishedmanwithasourceoffoodandahighwaytotravelupon.Thefirst__1__arosewherewaterwasadominantelementintheenvironment,achallengetoman'singenuity.TheEgyptiansinventedthe365-daycalendar__2__theNile'sannualflooding.TheBabylon
8、ians,whowereamongthemostfamouslaw-makersinancienttimes,inventedlaws__3__waterusage.WaterinspiredtheChinesetobuilda1,000-__4__canal,acomplexsystemwhich,afternearly2,500years,remainsstillpractically__5__andstil
