- 閱讀理解A
題干：Humanityusesalittlelessthanhalfthewateravailableworldwide.Yetoccurrencesofshortagesanddroughts(干旱）arecausingfamineanddistressinsomeareas,andindustrialandagriculturalby-productsarepollutingwatersupplies.Sincetheworld’populationisexpectedtodoubleinthenext50years，manyexpertsthinkweareontheedgeofawidespreadwatercrisis.Butthatdoesn'thavetobetheoutcome.Watershortagesdonothavetotroubletheworld-ifwestartvaluingwatermorethanwehaveinthepast.Justaswebegantoappreciatepetroleummoreafterthe1970soilcrises,todaywemuststartlookingatwaterfromafresheconomicperspective.Wecannolongeraffordtoconsiderwateravirtuallyfreeresourceofwhichwecanuseasmuchaswelikeinanywaywewant.Instead，forallusesexceptthedomesticdemandofthepoor，governmentsshouldpricewatertoreflectitsactualvalue.Thismeanschargingafeeforthewateritselfaswellasforthesupplycosts.Governmentsshouldalsoprotectthisresourcebyprovidingwaterinmoreeconomicallyandenvironmentallysoundways.Forexample,oftenthecheapestwaytoprovideirrigation(灌慨）waterinthedrytropicsisthroughsmall-scaleprojects,suchasgatheringrainfallindepressions(凹地）andpumpingittonearbycropland.Nomatterwhatstepsgovernmentstaketoprovidewatermoreefficiently，theymustchangetheirinstitutionalandlegalapproachestowateruse.Ratherthanspreadcontrolamonghundredsoreventhousandsoflocal，regional，andnationalagenciesthatwatchvariousaspectsofwateruse，countriesshouldsetupcentralauthoritiestocoordinatewaterpolicy.
題目：What is the real cause of the potential water crisis? - A 、The world population is increasing faster and faster.
- B 、Half of the world's water resources have been seriously polluted.
- C 、Humanity has not placed sufficient value on water resources.
- D 、Only half of the world's water can be used.
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參考答案【正確答案：C】
推理題。首段末句指出：許多專家認(rèn)為人類正處于大規(guī)模缺水的邊緣。第二段開始部分指出：如果我們開始比過去更珍惜水，世界范圍的水危機(jī)就不會(huì)出現(xiàn)。由此可見, 人類沒有對(duì)水給予足夠的珍惜。故C選項(xiàng)正確。
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