世界无烟日的英语高二作文.docx

世界无烟日的英语高二作文

世界无烟日的英语高二作文Smokehassomethingforpeopleinpoorhealth,nicotine.Nicotineinacigarettecankillamouse,25gofnicotineincigarettescankillafewcows,40to60mgofpurenicotinecankillaperson.Thedangersofnicotineisalsoquitebig,itcancausestomachorotherstomachdisease;Alsocanmakethepersoncausesheartdiseasecauserhythmoftheheartisnotstraight;Theoutbreakofseriousstillcancausecancer.Cigarettesarehiddenintheinvisiblekiller,aroundusareallshouldbevigilant.Accordingtoscientists,thechemicalcompositionoftobaccocontainshundredsofcomplex,mostharmfultohumanbody,includingtar,nicotine,phenols,alcohols,acids,aldehydeis40kindsoftoxicandcarcinogenicsubstance.Smokeafterthefire,smoke,containsthechemicalcompositionoftobaccoinall,atthesametimethanthetobaccoitselfandaddedsomeharmfulsubstances,suchascarbonmonoxide,tobaccotarandsoon.Thisisbecauseinadditiontothetobaccoitself,intheprocessofcigarettemade,toaddsomecocoainrawmaterials,liquorice,sugar,glycerin,suchasethyleneglycol,moist,tastefragranceandcombustion-supportingmaterial.Althoughtheseadditiveitselfisharmless,butchangedintheprocessofcombustion.Forexample,inthebackoftheratwithcocoaafterburningsmokeoil,cangrowskintumor.Glycyrrhizicacidinglycyrrhizaafterburning,withotheringredients,cangeneratehavecarcinogenicpolycyclicaromatichydrocarbons.Sugarincreasedaftercombustionwithtobaccotar,andtheproductofsugaraftercombustionisanimportantcarcinogensintobacco.Glycerinandglycolaftertheburningofthematerial,notonlycanmakesmokersbladdercancer,andtheacroleininhibitsthetracheaandciliasecretionfromthelungs,therebyincreasethechancesofsufferingfrombronchitisandemphysema,andmakepeoplewithbothbecameseriouslyill.Smokeharmtopeopleishowgreat!Sowecan'tsmoke.Stopsmoking,thebenefitoffuturegenerations.烟里有一种对人身体不好的东西——尼古丁。一枝香烟中的尼古丁可以毒死一只小白鼠，25g的香烟里的尼古丁可毒死几头牛，40至60毫克纯尼古丁可以毒死一个人。尼古丁的危害也是相当的大，它可以引起胃痛或其它胃病;还会使人引起心律不正诱发心脏病;严重的还可能引起癌症的爆发。香烟是隐藏在我们身边的隐形杀手，是大家所应警惕的。据科学家测定，烟草中含有数百种复杂的化学成分，大部分对人体有害，其中焦油、尼古丁、酚类、醇类、酸类、醛类等40种是有毒和有致癌作用的物质。烟在点燃后，所产生的烟雾，包含了烟草中所有的.化学成分，同时比烟草本身又增加了一些有害物质，如一氧化碳和