中学生英语演讲稿 thegreatrace

1、中学生英语演讲稿thegreatrace 中学生英语演讲稿thegreatrace thegreatrace automakerseedtowardthefuture lastnight,wheniwassurfingonthenet,文秘114版权所有，全国文秘工作者的114!iwasattractedbyaword: hydrogeneconomy.ididntknowwhatitmeant,andmaybemostofyou didnt,either.soiwentonreadingandfinallygotit.andtoday,ifeel soluckytotellyousometh

2、ingaboutit.andiamgoingtodividemy eechinto4parts. letsbeginourfirstpart. scienceorsciencefiction? iusedtoreadalotofsciencefiction.thefutureofenergyand traortationweresubjectsclosetomyheart.thelimitlepowerof coldfusion.thewonderofmatter-antimatterreactors.thechallengeof dilithiumcrystalsandwarpdrive.i

3、almostbelievedit.iwantedto believeit.butasitturout,thefutureofenergyisandalwayshas beenallaroundus.itisasnaturalaswind,sunlightandwater.science overtakessciencefictionandgivesushydrogen!iadmitthatitis terriblyanticlimactic.butthenwemustrealizethatthischanges everything.eeciallyinenvironmentalprotect

4、ion.butwhenwillthe hydrogeneconomygethere? powerfulmotivation prioritiesarechanging.youonceheardabouttheworldssulyofoil ruingout,whichitis.weonceworriedabouttheecologicaleffectsof automobilepollution.butnow,thebattlecryissecurity.weneedenergy securityandpowermaderighthereathomeandlotsofit.wonderful,

5、 abundant,clean,renewable,sustainablepower.weneedtobeaboutthe hemeantime,we needtowanourselvesfromdependenceonmid-eastoil,useouroil,use ouroilmoreefficientlyand,almostasanafterthought,lowerlevelsof pollutionfromourvehicles. efficiencyandcleanline,whil

6、eperhabeingnexttogodline,have latelytakenabackseattosecurity.however,researchanddevelopment effortsaremutuallybeneficial.thenextgenerationoffuelwillbeboth cleanerandlocallymade.majorautomanufacturersandoilcompanieshave oftenbeenseenaspartoftheproblem.but,fromtheirperective,文秘114版权所有，全国文秘工作者的114!they

7、cantsellwhatwedontwantto buy.tothem,itisourpenchantforgas-guzzlingortsutilityvehicles thatisdangerous,wastefulandsuddenlyuatriotic. hydrogensourcesandsulyinfrastructure hydrogenisabundant,buttherearesulyproblems.hydrogenisalmost neverfoundinitspureform.itisalreadycombinedwithotherelements toformwate

8、roranynumberoforganiccompounds.togetpurehydrogen, hecaseofwater,theproce iscalledelectrolysis.inhydrocarbonfuels,itiscalledreformation. althoughhydrogenhasbeensuccefullyreformedfromallmajorfuels, industrialalicatioforhydrogentodaygenerallyrelyonreformingit fromnat

9、uralgas.thistechniquecanatbestbeashort-termsolutionif thegoalistobeindependentfromfoilfuels.othersourcesofhydrogen includeglucose,sodiumborohydrideandevenbacterialcomposting.notall ofthesewillmakethecut.renewabilityisakeyiue.themoney,time andefforttoturngtasfillingstatio,hydrogenfillingstatiois mindandbudget-boggling. theotherproblemissulyinfrastructure.themoney,timeande