2017高考英语生态环保类阅读理解

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1、专业技术资料分享话题七：生态环保类(一)Theneedtofeedagrowingpopulationisputtingmuchpressureontheworld'ssupplyofwater.With97%oftheworld'swatertoosaltytobedrunkorusedinagriculture,theworldwidesupplyofwaterneedscarefulmanagement,especiallyinagriculture.Althoughtheideaofawatershort

2、age(短缺)seemsstrangetosomeonefortunateenoughtoliveinahighrainfallcountry,manyoftheworld'sagriculturalindustriesexperienceconstantwatershortages.Althoughdamscanbebuilttostorewaterforagriculturaluseindryareasanddryseasons,thecostsofwaterredistribution(重新分配)areve

3、ryhigh.Notonlyistherethecostoftheengineeringitself,butthereisalsoanenvironmentalcosttobeconsidered.Wherevalleys(山谷)arefloodedtocreatedams,housesarelostandwildlifehomesdestroyed.Besides,watermayfloweasilythroughpipestofields,butitcannotbetransportedfromoneside

4、oftheworldtotheother.Eachcountrymustthereforerelyonthemanagementofitsownwatertosupplyitsfarmingrequirements.Thisisparticularlytroublingforcountrieswithagriculturalindustriesinareasdependentonirrigation(灌溉).InTexas,farmers'overuseofirrigationwaterhasresultedin

5、a25%reductionofthewaterstores.IntheCentralValleyareaofsouthwesternUSA,ahugewaterengineeringprojectprovidedwaterforfarmingindryvalleys,butmuchofthewaterusehasbeenpoorlymanaged.SaudiArabia'sattemptstogrowwheatindesertareashaveseenthepumpingofhugequantitiesofirr

6、igationwaterfromundergroundreserves.Becausethereisnorainfallintheseareas,suchreservescanonlydecrease,anditisbelievedthatfiftyyearsofpumpingwillseethemrundry.1.Fromthefirsttwoparagraphswelearnthat________.A.muchoftheworld'swaterisavailableforuseB.peopleinhighr

7、ainfallcountriesfeelluckyC.thecostsofwaterredistributionshouldbeconsideredD.watercanbeeasilycarriedthroughpipesacrosstheworld2.WhichofthefollowingisTRUE?A.ThewaterstoresinTexashavebeenreducedby75%.B.Mostindustriesintheworldsufferfromwatershortages.C.Theunderg

8、roundwaterinSaudiArabiamightrunoutin50years.D.GoodmanagementofwateruseresultedfromtheprojectintheCentralValley.3.Whatismostlikelytobediscussedintheparagraphthatfollows?A.Stepstoimprovingw