托福综合写作Word文档下载推荐.docx

托福综合写作Word文档下载推荐.docx

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托福综合写作@#@托福综合写作@#@CASESTUDY1@#@【Reading:

@#@】@#@Youwillhave3minutestoreadthepassages.@#@Asfossilfuelsbegintodwindle,ahigherandhigheremphasishasbeenplacedontechnologiestousethesefuelsmoreefficiently.Onefamilyofsuchtechnologiesiscalled“cleancoals”,socalledbecauseitusescoalinless-pollutingways.Thereareatleastthreedistinctadvantagesthatthisfamilydisplays.@#@Thefirstoftheseresultsfromthenewcoalburningtechnologyandensuresahighercombustionratioandtemperature.Thatis,moreoftheburnablepartofthecoalisactuallyburned.Thegreatbenefithereisthatlesscoalisneededtoobtainbnagivenamountofheatthanwithother,moreprimitive,methods.Acorollarybenefitisthatfarlessburntcoalparticle-matterisreleasedintotheairassmoke.@#@Second,atechniqueknownas“coalwashing”can,ineffect,purifycoalbeforeburning.Theresultisthatburningsuchcoalreleasesonlyaverysmallamountofsulfurdioxideintotheatmosphere.Thisisakeyadvantage,giventhatsulfurdioxidepollutionisleadingcauseofacidrain.Andacidrain,inturn,isaseriouspollutantofwaterandanimpedimenttoreforestation.@#@Finally,atechniqueknownas“carboncapture”helpsdrasticallyreducecarbondioxideemissions.Thisisperhapsthebiggestconsiderationofall,sincecarbondioxidehasbeenidentifiedastheleadingculpritincausingthe“greenhouseeffect”andresultinginglobalwarming.@#@Takentogether,cleancoaltechnologiesgofartoensurethatsuchcoalreservesasremainonEarthwillbeusedinthemostefficientandnon-pollutingmanner.@#@【lecture】@#@Nowlistentopartofalectureonthetopicyoujustreadabout.@#@【EssayTopic】@#@Summarizethepointsmadeinthelectureyoujustheard,explaininghowtheycastdoubtonpointsmadeinthereading.@#@Youmustfinishyouranswerin20minutes.@#@CASESTUDY2@#@CASESTUDY3@#@CASESTUDY4@#@