中学生英语演讲稿－thegreatrace
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thegreatrace
automakerseedtowardthefuture
lastnight,wheniwassurfingonthenet,文秘站版权所有，全国文秘工作者的__!iwasattractedbyaword:
hydrogeneconomy.ididn’tknowwhatitmeant,andmaybemostofyou
didn’t,either.soiwentonreadingandfinallygotit.andtoday,ifeel
soluckytotellyousomethingaboutit.andiamgoingtodividemy
eechinto4parts.
let’sbeginourfirstpart.
scienceorsciencefiction?
iusedtoreadalotofsciencefiction.thefutureofenergyand
traortationweresubjectsclosetomyheart.thelimitlepowerof
coldfusion.thewonderofmatter-antimatterreactors.thechallengeof
dilithiumcrystalsandwarpdrive.ialmostbelievedit.iwantedto
believeit.butas！itturout,thefutureofenergyisandalwayshas
beenallaroundus.itisasnaturalaswind,sunlightandwater.science
overtakessciencefictionandgivesus…hydrogen!iadmitthatitis
terriblyanticlimactic.butthenwemustrealizethatthischanges
everything.eeciallyinenvironmentalprotection.butwhenwillthe
hydrogeneconomygethere?
powerfulmotivation
prioritiesarechanging.youonceheardabouttheworld’ssulyofoil
ruingout,whichitis.weonceworriedabouttheecologicaleffectsof
automobilepollution.butnow,thebattlecryissecurity.weneedenergy
securityandpowermaderighthereathomeandlotsofit.wonderful,
abundant,clean,renewable,sustainablepower.weneedtobeaboutthe
taskoffindingalternativefuelsandenergysources.inthemeantime,we
needtowanourselvesfromdependenceonmid-eastoil,useouroil,use
ouroilmoreefficientlyand,almostasanafterthought,lowerlevelsof
pollutionfromourvehicles.
efficiencyandcleanline,whileperhabeingnexttogodline,have
latelytakenabackseattosecurity.however,researchanddevelopment
effortsaremutuallybeneficial.thenextgenerationoffuelwillbeboth
cleanerandlocallymade.majorautomanufacturersandoilcompanieshave
oftenbeenseenaspartoftheproblem(wecan’tbuywhattheyrefuseto
make).but,fromtheirperective,文秘站版权所有，全国文秘工作者的__!theycan’tsellwhatwedon’twantto
buy..tothem,itisourpenchantforgas-guzzlingortsutilityvehicles
thatisdangerous,wastefulandsuddenlyuatriotic.
hydrogensourcesandsulyinfrastructure
hydrogenisabundant,buttherearesulyproblems.hydrogenisalmost
neverfoundinitspureform.itisalreadycombinedwithotherelements
toformwateroranynumberoforganiccompounds.togetpurehydrogen,
youhavetoseparateitfromsomething.inthecaseofwater,theproce
iscalledelectrolysis.inhydrocarbonfuels,itiscalledreformation.
althoughhydrogenhasbeensuccefullyreformedfromallmajorfuels,
industrialalicatioforhydrogentodaygenerallyrelyonreformingit
fromnaturalgas.thistechniquecanatbestbeashort-termsolutionif
thegoalistobeindependentfromfoilfuels.othersourcesofhydrogen
includeglucose,sodiumborohydrideandevenbacterialcomposting.notall
ofthesewillmakethecut.renewabilityisakeyiue.themoney,time
andefforttoturngtasfillingstatio,hydrogenfillingstatiois
mindandbudget-boggling.
theotherproblemissulyinfrastructure.themoney,timeandeffortto
turngasfillingstatio.thereiscoiderablementalenergygoinginto
solvingtheseproblems,buttheywillnotbeso;vedquicklyorcheaply.at
leastibelieve.