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【阅读理解Humanityusesalittlelessthanhalfthewateravailableworldwide.Yetoccurrencesofshortagesanddroughts(干旱)arecausingstarvationanddistressinsomeareas-andinindustrialandag】
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更新时间:2024-04-20 07:51:49
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(1)

阅读理解

Humanityusesalittlelessthanhalfthewateravailableworldwide.Yetoccurrencesofshortagesanddroughts(干旱)arecausingstarvationanddistressinsomeareas-andinindustrialandagriculturalwastesarepollutingwatersupplies.Sincetheworld’spopulationisexpectedtodoubleinthenext50years-manyexpertsthinkweareontheedgeofawidespreadwatercrisis.

Butthatdoesn’thavetobetheoutcome.Watershortagesdonothavetotroubletheworld-ifwestartvaluingwatermorethanwehaveinthepast.Justaswebegantoappreciatepetrolmoreafterthe1970soilcrisis-todaywemuststartlookingatwaterfromafresheconomicperspective(观点;角度).Wecannolongeraffordtoconsiderwateravirtuallyfreeresourceofwhichwecanuseasmuchaswelikeinanywaywewant.Instead-forallusesexceptthedomesticdemandofthepoor-governmentsshouldpricewatertoreflectitsactualvalue.Thismeanschargingafeeforthewateritselfaswellasforthesupplycosts.Governmentsshouldalsoprotectthisresourcebyprovidingwaterinmoreeconomicallyandenvironmentallysoundways.Forexample-oftenthecheapestwaytoprovideirrigationwaterinthedrytropicsisthroughsmall-scaleprojects-suchasgatheringrainfallindepressions(凹地)andpumpingittonearbycropland.Nomatterwhatstepsgovernmentstaketoprovidewatermoreefficiently-theymustchangetheirinstitutionalandlegalapproachestowateruse.Ratherthanspreadcontrolamonghundredsofeventhousandsoflocal-regional-andnationalagenciesthatwatchvariousaspectsofwateruse-countriesshouldsetupcentralauthoritiestocoordinatewaterpolicy

Whatistherealcauseofthepotentialwatercrisis?

[]

A.

Onlyhalfoftheworld’swatercanbeused.

B.

Theworld’spopulationisincreasingfasterandfaster.

C.

Halfoftheworld’swaterresour

汪陈应回答:
  答案:1.D;2.A;3.C;4.B;
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