洁净能源水力发电 英语作文.doc

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BenefitsandDifficultiesofHarnessingaCleanEnergyAfewdaysago,Italkedabouttheelectricvehiclewithmyfriend;hesaidthatiftheenergyofelectricvehiclecamefromthermalpowerplant,howwecansayitisenvironmental?Yes,butifourenergycomefromhydroelectricgeneration,thisproblemcanbesolved.Hydroelectricgenerationmaybethemostsuccessfultechnologytocreateenergy。

LikeourThreeGorgesDam.Wetakenothingfromthenature,onlybuiltabigdamandletthewaterflowuptodown,butwegetwhatwewantthecleanenergy;Moreover,itworksstable,notlikethewindenergyandthesolarenergywhicharerestrictedbyclimaticconditions;Besides,itscapacityisconsiderable;anditcanpreventflashfloodstoo.However,nothingisperfect。

thehydroelectricgenerationalsohasdifficulties.Forexamples,wehavetodisplacethevillagersnearthehugedamanditmayhavenegativeeffectsonsomereservoirs,inaddition,shippingmaybeaffectedtoo.Well,wealsohadtosaythathydroenergyisthemostpromisingenergy,webelieveinthenearfuture,thedifficultiescanbesolved.