○  中学生英语演讲稿－thegreatrace  ○

mdependenceonmid-eastoil,useouroil,use
   　　ouroilmoreefficientlyand,almostasanafterthought,lowerlevelsof
   　　pollutionfromourvehicles.
   　　efficiencyandcleanline,whileperhabeingnexttogodline,have
   　　latelytakenabackseattosecurity.however,researchanddevelopment
   　　effortsaremutuallybeneficial.thenextgenerationoffuelwillbeboth
   　　cleanerandlocallymade.majorautomanufacturersandoilcompanieshave
   　　oftenbeenseenaspartoftheproblem(wecan''tbuywhattheyrefuseto
   　　make).but,fromtheirperective,，全国文秘工作者的!theyc

an''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.thereisco

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