8B分层练习(四)I.Choosethebcs’tanswer()1.1wonderedwhatourmonitormeant______sayingthat.A.onB.forC.byD.with()2.Sinceyouhadwastedtoomuchtimefor_____yourthings,therewaslittletimeleftforyoutogettotheairport.A・preparingB.toprepareC.prepareD.prepared.()3.Thechildren_____whenalltheyheardthefrighteninglaughteratnight.A.freezeB.frozenC.freezingD.froze()4.Wehardlyseefishintheriverbecausethefactoryhasdumpedtoomuch______intoit.•A.cabbage・BpumpC.treatmentD・sewage()5.Theworkers____inthefactoryuntiltheirleaderreturned・totheofficeA.waitedB.didn'twaitC.leftD.didn'tstay()6.Ourteachersaidthatsheagreed_____with.usSomeofourideaswereright.A.bytheway・Binaway・ConthewayD.intheway()7.Eric,don'tthrowtherubbisheverywhere.Youmust_____remembertheenvironment.A.nottopolluteB.topolluteC.pollutingD.notpolluting()8.一____paperdoyouneedforyourhomework?—Justapieceofpaper.A.HowlongB.HowfarC.HowmuchD・Howmany()9.Please____theradioalittle.Mysonisdoinghishomeworkintheroom.A.turnoffB.turnonC・turndownD.turnup()10.Thewaterstillcaiftbedmnk_____「beenitgivenhasmedicaltreatment.A.becauseB.whenC.sothatD.although()11・一It'shottoday・Howaboutgoingswimmingafterschool?一___Let'saskPetertogowithus.A.ThafsOK.B.Bestwishes!C.Goodluck!D.Goodidea!()12.Themountainwascovered_______snowwhenwe.gotthere.A.atB.inC.ofD.withILCompletethefollowingpassagewiththewordsorexpressionsinthebox.Eachcanonlybeusedonce(将下列单词或短语前的字母填入空格。每个单词或短语只能填一次)(共8分)(A)A.rainB.fewC.alittleD.useE.difficultWaterisveryimportanttous.Wecannotlivewithoutit.Thereisalotofwaterontheearth,butwecannot(1)__________most・ofAboutit97.4%oftheearthswaterissalty.MostofthefreshwaterissnowandiceneartheNorthandSouthPoles.Wccanuseonlyaboutonepercentofthewaterontheearth.Wcusewaterfrombothlakesandrivers.Someofthewaterevaporates(蒸发)andthenbecomes(2)_________•Ofcourseweuserainwaterforfarmsandotherthings.Weusethiswateragainandagain.Sometimestheearth'swaterisinthewrongplace.Thereisalotof(热raininthetropics带)，butitis(3)__tohavefarmsinthetropics-Mostof