水资源的英语作文.doc

水资源的英语作文 导语：水资源是发展国民经济不可缺少的重要自然资源在世界许多地方对水的需求已经超过水资源所能负荷的程度同时有许多地区也濒临水资源利用之不平衡下面是小编为你带来的水资源的英语作文欢迎阅读 WaterShortage 提纲 1.水的重要性 2.造成水资源短缺的原因 3.怎样缓解缺水问题及保护水资源 Peoplecantimaginelifewithoutwater.Withoutit,theearthweliveonwouldbeadeadone.Therewouldbenotrees,nocrops,noanimalsandnopeople.Sowaterisconsideredtobenexttooxygeninimportance. Althoughnearlythreequartersoftheearthssurfaceiscoveredwithwater,itisseawaterandundrinkable.Thedemandforwaterisincreasing,whilewaterresourcesarescarce.Agriculturalproductionneedsenormousamountsofwater,sodoesindustry.Besides,therapidgrowthofpopulationmakesitmoreandmoredifficultforpeopletosurvivebecauseofthewatershortage.Sowatershortagehasbeeoneofthemostseriousproblems. Fortunately,peoplehaverealizedthispressingproblemandaretryingtofindwaystosalveit.First,peopleareurgedtoeconomizeonwater.Second,measuresaretakentoprotectwaterresources.Third,circulatingwaterisusedforindustrialpurposesoverandoverinfactoviesandtreatedsewagewaterisusedforirrigationinfarmingland. WaterProblemsintheFuture(未来的水资源问题) 1.水资源问题将来会更严峻; 2.解决水资源问题的办法 写作导航)第一段围绕提纲举例说明为什么水资源问题会变得更加严重如人口增加带来的水污染、工农业生产带来的水污染等段末呼吁应采取果断措施为第二段伏笔;第二段给出解决办法一是垃圾、废水等废弃物的处理二是部分或全部回收利用废弃物 范文 Presently,theworldisfacedwithseriouswaterproblems.Buttheseproblemswittbeemoreintenseandmoreplexinthefuture.Ourincreasingpopulationwitttremendouslyincreaseurbanwaters,primarilysewage.Ontheotherhand,increasingdemandsforwaterwittdecreasesubstantiallytheamountofwateravailablefordilutingwastes.Rapidlyexpandingindustrieswhichinvolvemoreandmoreplexchemicalprocesseswillproducelargevolumesofliquidwastes.Manyofthesewittcontainchemicalsthatarepoisonous.Tofeedourrapidlyexpandingpopulation,agriculturewillhavetobeintensified.Thiswillinvolveeverincreasingquantitiesofagriculturechemicals.Fromthis,itisapparentthatdrasticstepsmustbetakenimmediatelytodevelopcorrectivemeasuresforthepollutionproblems. Therearetwowaysbywhichthesepollutionproblemscanbelessened.Thefirstrelatestothetreatmentofwastestodecreasetheirpollutionhazard.Thisinvolvestheprocessingofsolidwastespriortodisposalandthetreatmentofliquidwastestopermitthereusetothewaterorbestreducepollutionuponfinaldisposal.Thesecondapproachistodevelopaneconomicuseforallorpartofthewastes.Farmmanureisspreadinfieldsasanutrient.Wastesfromsewagedisposalplantsareusedinsomeareasbothforirrigationandforthenutrientscontained.Liquidwastesfromotherprocessingplantsmayalsobeusedasasupplementalsourceofwater.Onlybydoingthesepromptlynowcanweexpecttosolvetheseriouswaterproblemsinthefuture. 人们总以为淡水是取之不尽的实际上淡水资源是很有限的请谈谈你的看法 Itisgenerallybelievedthatthereisagoodsupplyoffreshwater.Buttoourdisappointment,thefactisjusttheopposite. Aswecanseetheworldpopulationisgrowingrapidlydaybyday.Soenoughfreshwaterisneededtofeedsuchabigpopulation.Whatsmore,withthedevelopmentofindustry,factoriesandvehiclesproducepoisonousgasesorwastes,whichconsequentlyresultsinthepollutionofwater.Thoughfresh,agoodamountofitcannolongerbeused.Onlyquitelimitedfreshwaterresourceisavailabletohumanbeings.Soitshightimefor