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1、高中作文-高三作文-说明文-环保活动，你我参与（英文版）Environmentalprotectionactivities,you,IandFullParticipation!Ridingabicycle,canbringbenefitstomanypeople,aslongasonethirdofthepeoplearoundtheworld,canrideabicycle,airpollutioncanbereducebyhalf!Justbecausethepeoplearoundtheworldarenotawareofdamage,airpollutionhasbr
2、oughtusIdecidedlmustinformmyclassmatesoAlthoughlhavenotcompletedl2yearsold,butleanstartfromnowandlearntorideabike!Sowhenl2yearsold,Icansafelygotoschool,afterschool,gotoschoolclasses!Anddonz/tbothermymomandDad,alsoicanbeindependent,andcanreducetheairpollution!TheresalotofAirpollutionaroundus
3、,pleaselookatthefollowingscientifiedisplay。Thiscentury,sincethel950s,duetothelarge-sealesocializedproductionandhumanacceleratedpaceoflife,thecarhasbeenalotinuse。Thecaralsobringsconveniencetopeoplez/slivesandseriousenvironmentalpollution,whichcausesahugethreattohumanhealth。Thereareabout500mi
4、11ioncarsintheworId,theannualdischargeoffourhundredmilliontonsofcarbonmonoxide,8000tonsofHCsandfiftymilliontonsofnitricoxide。Airpollution，accordingtostatisticstheU。S。，about60%ofthemeansoftransportcausedinJapan,about85%iscausedbythecar,oursituationisnotoptimistic。Vehicleemissionshavebecometh
5、eworld^surbanpollutionculprit。Automobileexhaustintheprocessofinitiatinganddrivingthemainpollutantscarbonmonoxide,hydrocarbons、nitrogenoxidesandparticulatematter。Automotiveexhaustgascompositionandtheemissionsrelatedtothetypeofengineandfuel,ingeneral,theconcentrationofcarbonmonoxideandhydroca
6、rbonsintheexhaustgasofdieselenginesaremuchlowerthanthegasolineengine,theconcentrationofthenitrogen-oxygencompoundisalmostequal,however,dieselenginesemitlargesmokyodoroffensive。Hydrocarbonsandnitrogen-oxygencompoundinthephotochemicalreactionoccursinthestrongultravioletradiation,togenerateaph
7、otochemicalsmogThereisnotenoughinformationonvehicleemissionsinavarietyofharmfulingredientscombinedeffectsofhumansandothermammals,theheaIthhazards,andmorewiththetoxiceffectsoftheindividualcomponentstoevaluatetheharm。Carbonmonoxidemainlybyhemoglobinbinding
