Car and Air Pollution

CarandAirPollutionDirection:Forthispartyouareallowed30minutestowriteacompositiononthetopicCarsandAirPollution.Youshouldwritenolessthanwordsandbaseyourcompositionontheoutlinebelow:1.私家轿车越来越多，有些问题随之产生。2.比较明显的大问题有......3.我对这种现象的看法。CarandAirPollutionToomanycarshavecreatedalotofseriousproblemsinourworld.Besidescongestion,accidentsandfastfuelconsumption,carsareresponsibleforagoodpartofairpollutioninbigcities.Allthetime,theyarepumpinghugeamountsofwastegasesintotheatmosphere.Thesegasesareveryharmful,causingdiseaseandevendeath.Onepossiblesolutionistodesignanddevelopcleancarsandcleanfuels.InShanghai,someofthepublicbusesbegintorunonnaturalgas,whichdoesnotgiveoffasmuchcarbondioxideasthepetrol.Butitmaytakedecadesforthenewmodelsofcleancarscompletelyreplacethetraditionalones.Anothersolutionistodevelopmodernpublictransportationsystemsandrestricttheuseofprivatecars.Ifthepriceofpetrolrisesconstantlyandthepublicvehiclesareefficientandconvenientenough,mostpeoplewillnotbuyprivatecars.Andthetotalnumberofcarsinbigcitieswillreducegreatly.Onthewhole,theeliminationofairpollutionneedsthecollectiveeffortsfromthegovernment,thepublicandtheenvironmentalists.