高考英语 沙漠正在蔓延Deserts Are Expanding作文素材.doc

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1、高考英语没有完成老师布置的作业,编造借口,谈谈你现在对这件事的认识作文素材沙漠正在蔓延(DesertsAreExpanding)1．沙化问题日趋严重；2．沙化问题成因；3．解决办法。[范文]   Therearevastareasoflandoneverycontinentwherethereisnorainfallorvegetation.Itisestimatedthatmorethan40percentofthelandontheearth'ssurfaceisdesertordesert-like

2、.Whatisworse,thesedesertsarespreadingatasurprisingrateeveryyear.Ifthistrendcontinues,sandwillburyalmosteverythinginthenearfuture.   Tworeasonsaccountforthefactthatdesertsarespreading.Thefirstreasoncomesfromnature.Theseareasareusuallylocatedinthefarinnerla

3、ndwhererainfallcanneverreach.Thesecondreasoncomesfrommanhimself.Manypeopleregardimmediateprofitasasupremevalue,whichresultsinover-grazing,poorfarming,treecutting,andstripmining.Alltheseactivitiesleavelandunprotected.Consequently,rainwaterwashesawaytopsoil

4、intoriversandoceans,windblowsawayloosesoil.   Theexpansionofdesertsmustbestoppedifwearetosurviveonthisplanet.Mancanmakedeserts,hecanalsopreventthemfromspreading.Stoppingovergrazing,poorfarming,treecutting,andstrip-miningisthefirststep.Plantingagreenbeltof

5、treesalongtheedgeofdesertsisthesecondstep.Coveringthedesertswithvegetationisanotherstep.Wehopemancanmakegreateffortstodevelopbetterwaystobringthespreadingdesertsundercontrol.1用心爱心专心