专题21社会生活、说理议论类阅读理解(2010﹒安徽﹒阅读理解E)Theneedtofeedagrowingpopulationisputtingmuchpressureontheword’ssupplyofwater.With97%oftheword’swatertoosaltytobedrunkorusedinagriculture,thewordwidesupplyofwaterneedscarefullmanagement，especiallyinagriculture.Althoughtheideaofawatershortage(短缺)seemsstrangetosomeonefortunateenoughtoliveinahighrainfallcountry,manyoftheword’sagricultureindustriesexperienceconstantwatershortages.Althoughdamscanbebuilttostorewaterforagricultureuseindryareasanddryseasons,thecostsofwaterredistribution(重新分配)areveryhigh.Notonlyistherethecostoftheengineeringitself,butthereisalsoanenvitonmentalcosttobeconsidered.Wherevalleys(山谷)arefloodedtocreatedams,housesarelostandwildlifehomesdestroyed.Besides,watermayfloweasilythroughpipestofields,butitcannotbetransportedfromonesideoftheworldtotheother.Eachcountrymustthereforerelyonthemanagementofitsownwatertosuplyitsfarmingrequirements.Thisisparticularlytroublingforcountrieswithagriculturalindustriesinareasdependentonirrigation(灌溉).InTexas,farmers’overuseofirrigationwaterhasresultedina25%reductionofthewaterstores.IntheCentralVallyareaofsouthwesternUSA,ahugewaterengineeringprojectprovidedwaterforfarmingindryvalleys,butmuchofthewaterusehasbeenpoorlymanaged.73.SaudiArabia’sattemptstogrowwheatindesertareashaveseenthepumpingofhugequantitiesofirrigationwaterfromundergroundreserves.Becausethereisnorainfallintheseareas,suchreseWhichofthefolloeingistrue?A.ThewaterstoresinTexashavebeenreducedby75％.B.Mostindustriesintheworldsufferfromwatershortages.C.TheundergroundwatetinSaudiArabiamightrunoutin50years.D.GoodmanagementofwateruseresultedfromtheprojectintheCentralValley.74.Whatismostlikelytobediscussedintheparagraphthatfollows?A.Stepstoimprovingwaterusemanagement.B.Waystoreducethecostofbuildingdams.第1页/共184页C.Measurestodealwithworldwidewatershortages.D.Approachestohandlingthepressureonwatersupply.WWW.Thetextismainlyabout________.A.watersupplyandincreasingpopulationB.warerusemanagementanda...
