2019版中考英语二轮复习 阅读理解优编题（10）

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1、2019版中考英语二轮复习阅读理解优编题（10）【实战训练】A（2019中考科普环保类选练）TheWorld’sWaterShortage   Theworldisnotonlyhungry,butitisalsothirstyforwater.Thismayseemstrangetoyou,sincenearly70percent（百分比）oftheearth’ssurfaceiscoveredwithwater.Butabout97percentofthishugeamountisseawater,orsaltwater.Mancanonlydrinkandusethe

2、other3percent－thefreshwaterfromrivers,lakes,underground,andothersources（资源）.Andwecannotevenuseallofthat,becausesomeofitisintheformoficebergsandglaciers（冰川）.Evenworse,someofithasbeenpolluted.   However,asthingsstandtoday,thissmallamountoffreshwaterisstillenoughforus.Butourneedforwaterisincr

3、easing（增加）rapidly－almostdaybyday.Onlyifwetakestepstodealwiththisproblemnowcanweavoid（避免）asevere（严重的）worldwidewatershortagelateron.   Weallhavetolearnhowtostopwastingourvaluablewater.Oneofthefirststepsistodevelopwaysofreusingit.   Todayinmostlargecities,waterisusedonlyonceandthensentoutinto

4、asewersystem（下水道）.Fromthereitreturnstotheseaorrunsintoundergroundstoragetanks.Butitispossibletopipeusedwatertoapurifying（净化）plant.Thereitcanbetreatedwithchemicalssothatitcanbeusedagain,justasifitwerefreshfromaspring.   Butevenifeverylargecitypurifiedandreuseditswater,westillwouldnothaveeno

5、ugh.Allwe’dhavetodotomakeuseofthevastreserves（贮备）ofseawaterintheworldistoremovethesalt.   Ifwetakethesestepswe’llbeinnodangerofdryingup. 1.Theworldisthirstyforwaterbecausewecanonlyuse_________percentofthewatercoveringthesurfaceoftheearth.   A.3           B.morethan3       C.lessthan3      

6、D.97 2.WhichofthefollowingstatementsisNottrue?   A.Asthingsremainunchanging,thissmallamountoffreshwaterisstillenoughforus.   B.Ourneedforwaterisbecominglargerandlarger.   C.Therewillbenowatershortageinthefuture.   D.Weshouldtakestepstodealwiththewatershortageproblem. 3.Toreusewater,weshoul

7、d__________.   A.treatitwithchemicals   B.useitonlyonce   C.senditoutintoasewersystem   D.makeitflowintoundergroundtanks 4.Inordertohaveenoughwater,weshouldalsomakeuseof_________.   A.icebergsandglaciers   B.seawater   C.riversandlake   D.undergroundwater 5.In