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关于沙漠的英语作文.

发表时间：2024-07-11 23:37:56 来源：网友投稿

Therearevastareasoflandoneverycontinentwherethereisnorainfallorvegetation.Itisestimatedthatmorethan40percentofthelandontheearth'ssurfaceisdesertordesert-like.Whatisworse,thesedesertsarespreadingatasurprisingrateeveryyear.Ifthistrendcontinues,sandwillburyalmosteverythinginthenearfuture.Tworeasonsaccountforthefactthatdesertsarespreading.Thefirstreasoncomesfromnature.Theseareasareusuallylocatedinthefarinnerlandwhererainfallcanneverreach.Thesecondreasoncomesfrommanhimself.Manypeopleregardimmediateprofitasasupremevalue,whichresultsinover-grazing,poorfarming,treecutting,andstripmining.Alltheseactivitiesleavelandunprotected.Consequently,rainwaterwashesawaytopsoilintoriversandoceans,windblowsawayloosesoil.Theexpansionofdesertsmustbestoppedifwearetosurviveonthisplanet.Mancanmakedeserts,hecanalsopreventthemfromspreading.Stoppingovergrazing,poorfarming,treecutting,andstrip-miningisthefirststep.Plantingagreenbeltoftreesalongtheedgeofdesertsisthesecondstep.Coveringthedesertswithvegetationisanotherstep.Wehopemancanmakegreateffortstodevelopbetterwaystobringthespreadingdesertsundercontrol.本文来自:http://www.ii63.com>英语作文网详细出处参考：http://www.ii63.com/html/gaokaoyingyu/20070407/3787.html

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