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时间:2020-04-03
《高考英语 未来的水资源问题Water Problems in the Future作文素材.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、高考英语未来的水资源问题(WaterProblemsintheFuture)作文素材未来的水资源问题(WaterProblemsintheFuture)1.水资源问题将来会更严峻;2.解决水资源问题的办法。[范文] Presently,theworldisfacedwithseriouswaterproblems.Buttheseproblemswittbecomemoreintenseandmorecomplexinthefuture.Ourincreasingpopulationwitttremendouslyincreaseurbanwaters,primarilysewage
2、.Ontheotherhand,increasingdemandsforwaterwittdecreasesubstantiallytheamountofwateravailablefordilutingwastes.Rapidlyexpandingindustrieswhichinvolvemoreandmorecomplexchemicalprocesseswillproducelargevolumesofliquidwastes.Manyofthesewittcontainchemicalsthatarepoisonous.Tofeedourrapidlyexpandingpopu
3、lation,agriculturewillhavetobeintensified.Thiswillinvolveeverincreasingquantitiesofagriculturechemicals.Fromthis,itisapparentthatdrasticstepsmustbetakenimmediatelytodevelopcorrectivemeasuresforthepollutionproblems. Therearetwowaysbywhichthesepollutionproblemscanbelessened.Thefirstrelatestothetr
4、eatmentofwastestodecreasetheirpollutionhazard.Thisinvolvestheprocessingofsolidwastes"priorto"disposalandthetreatmentofliquidwastestopermitthereusetothewaterorbestreducepollutionuponfinaldisposal.Thesecondapproachistodevelopaneconomicuseforallorpartofthewastes.Farmmanureisspreadinfieldsasanutrient
5、.Wastesfromsewagedisposalplantsareusedinsomeareasbothforirrigationandforthenutrientscontained.Liquidwastesfromotherprocessingplantsmayalsobeusedasasupplementalsourceofwater.Onlybydoingthesepromptlynowcanweexpecttosolvetheseriouswaterproblemsinthefuture.1用心爱心专心
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