SavingOurEarth 　　Itisveryimportanttodealwiththerubbishincities.Foronething,rubbishmaycausealotofpollution.Itmaypollutetheair,thewaterandtheplaceswelivein.Foranother,itmaydoharmtopeople'shealth. 　　Soinourcity,rubbishiswelldealtwith.First,itissorted.Thenoldnewspapersandglassarerecycled.Theharmfulwastesareburiedandthewastewateriscleanedbeforeitgoesintotheriver.Thegovernmenthasalreadymadelawsagainstpollutioncausedbyrubbish. 　　Butthat'snotenough.Wemustalltryour.besttopreventrubbishfrompollutingtheenvironmentsoasto.saveourcityandourlivingplace. 　　KeepingWaterSourcesClean 　　Whoiswillingtodrinkthepollutedwater?Itcancauseustobeillandeventodie.Wecan'twaitforamomenttoprotectourwatersources.Thewaterweusecomesfromoceans,lakes,riversorstreams.Butmanyofthesewatersourcesaregettingseriouslypolluted.Townsandcitiesarepouringdustintothewater.Manypeoplearethrowingallkindsofdirtythingsintothewater.Factoriesarepouringwastematerialintothewater.Therefore,watersourceshavebecomesobadlypollutedthatsomeofthewaterisunfittodrinkortouse.Nowitishightimethatweshoulddosomethingtoprotectourwaterenvironmentfrombeingpolluted. 　　Generally,warisrepugnant,butpeaceiswelcome.Whilepeaceistheultimategoalofallofourundertakinginthisworld,warhasbeeninevitableinthecourseofhumancivilization.Doesmanhaveaninnatetasteforwar?Orisitjustanacquiredschemelearnedfromhumansociety?Weonlyknow 　　thattherehasn'tbeenanyperiodinthehistoryduringwhichtheworldwasreallyatpeace.Humanbeingspursuepeaceandprosperitythroughtheestablishmentoffamilies,communities,andnations.Whyshouldweletallthesebedestroyedbywars? 　　Toreducethepossibilityofwartothelowestextent,Ihavetwosuggestions.Firstofall,educationshouldbeconsolidatedtoeliminatethebrutalityandbeastlinessinhumannature.Knowledgederivesfromeducationandisasurerroadtowisdom.Wisdomenablesustodistinguishrightfromwrong.Italsoteachesusrestraintandtolerance,Withwisdomandlove,thehumanraceasawholewilldetestwarandembracepeace拯救地球 　　处理城市垃圾是一个非常重要的问题.首先,垃圾会导致污染.它会污染空气、水和人们居住的场所.其次,它会危害人类健康. 　　所以我们在城市中,垃圾得到了妥善处理.我们首先将垃圾分类,然后可将旧报纸和玻璃制品进行再生利用.有害的废物要被掩埋,污水要在净化后才排入河流.政府已经制定了规章,禁止垃圾污染. 　　仅仅这些还不够.我们大家必须竭尽全力防止拉圾污染环境以及拯救我们的城市,拯救我们的家园. 　　保持水源清洁 　　污染的水会使人生病甚至死亡,有谁愿意喝这样的水呢?我们要保护水源,刻不容缓.我们用的水来自海洋、湖泊、河流或小溪,但这些水源有许多正受到严重的污染.城镇乒把大量的尘埃排入水中,许多人正把各种；各样的脏物投进水中,工厂正把废物排入水中.因此,水源已经污染严重,其中一些不适合再饮用.现在到了．采取措施保护水环境使其免受污染的时候了. 　　一般而言,战争令人憎恶而和平受人欢迎,虽然和平是人类世界上一切作为的最终目标,但战争在人类文明的过程中,始终无法避免.战争是人类天生的喜好,还是人类后天在社会中习得的伎俩?我们只知道,在历史上从来没有一段时期世界是真正处于和平状态.人类通过家庭、社会以及国家的构建来追求和平与繁荣,又怎么能让战争摧毁这一切呢? 　　要将战争的可能性降至最低程度,我有两点建议：首先,必须落实教育,以去除人性中的残酷与兽性；知识源于教育,同时也是通往智慧较稳当的一条路.智慧使我们明辨是非,同时也教导我们自制与容忍.自制与容忍乃防止任意杀戮和破坏的两条有效途径.有了智慧和爱,全体人类定当厌恶战争、拥抱和平.