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EnvironmentalProtectionMainPoints:•1Whyweshouldprotecttheenvironment•2Thepresentsituationoftheenvironment•3Themeasurestoprotecttheenvironment•Weaffecttheworldarounduswithscienceandtechnologyaspowerfultools.Howeveritistruethattheadvancementofscienceandtechnologyhavebroughtusenvironmentalpollution.1.WhyWeShouldProtectTheEnvironment:•Wateristhesourceforlives.(水是生命之源)Wecan’tlivewithoutfreshwater.•Airandtreesisindispensabletolife.Thereisaboutone-fifthoxygenintheair.Weconsumeoxygen,andreleasecarbondioxide.Withouttheair,wecan’tlive.Treesconsumecarbondioxideandreleaseoxygen,alsoitcanbeautytheworld.AspectssaidthatWeliveinaclosedinterrelatedsystem.alllifeisconnectedthroughthemediumofwaterand99moleculesoutofahundred,inmostlivingthingsiswater.Animals,plants,anduswaterinconstantmotion.Contaminate(弄脏，污染)water,contaminatetheenvironment,intheendwecontaminateourselves.Asweonlyhaveoneearth,weshouldtryourbesttoprotecttheenvironmentinordertoprotecttheearth—ouronlyhome.2.ThePresentSituationOfTheEnvironment•Duetomassivepollutionandover-developmentinrecentyears,theEarthhasgraduallylostitsoriginalcharacteristics.•Climatechanges,naturaldisastersandthegreenhouseeffectareregardedastheEarth’sresponsetothisattack.AirPollution:Nowadaysasmoreandmorecarsarebeingproducedandputintouse,moreandmoreharmfulgasesarereleasedintotheair,sotheairisinfectedwithnoisomegaseswhicharebadforhumans’health.•Becausetherearemoreandmorefactories,moreandmoreuntreatedharmfulgasesarereleasedintotheair.LondonSmogIncident（伦敦烟雾事件）GreenhouseEffect（温室效应）WaterPollution:•Manyfactoriespouredliquidwaterintorivers.•Thiswatermay•becomeourdrinking•-waterordomestic•water.•Oritmayflowintoriver、lakeorsea,andmanyaquaticanimalswillbeaffected.•TodaymanyfamouslakesandrivesarepollutedsuchasTaihuLakeinWuxiCity.•AbouthalfofthecitiesinChinaarelackingofwater.•Manycitiesoverusedgroundwater,andtheirgroundleverdecrease.•Somepeoplegetillbydrinkingpollutedwateroreatinganimalslivinginpollutedwater.ResourceLeak:•Becausetherearelimitednumberofresourcesandalargeamountofpeople,theresourcesleftarebecomingfewerandfewer.Water、petroleum(石油)、forest、coalandmedal,peoplehaveconsumedalotoftheseresources,andonedaytheywillbeusedup.3.Measures•Toprotecttheenvironment,governmentsofmanycountrieshavedonealot.Legislativestepshavebeenintroducedtocontrolairpollution,toprotecttheforestandsearesourcesandtostopanyenvironmentalpollution.Therefore,governmentsareplayingthemostimportantroleintheenvironmentalprotectiontoday.•KyotoProtocol(京都议定书)whichissetupinDecember1997byalotofcountriestoprotecttheairhasbeencarriedoutforseveralyearsandhasachievedremarkableresults.•Thepolicyoffamilyplanninghasbeenmadetocontrolthepopulation.Duetothis,thepopulationofChinaisundercontrol.Manyfactorieshaveusedadvancedfouldrainagesystem(排污系统)whichcanreducerisk.Somescientistsareworkingfortappingnewresourcesofenergywhichisreproducibleandarepollution-free.•Lotsofbusesaretakingintousesothatfewerprivatecarscanbeusedandlessexhaustgaseswillbepouredintoair.•Thepublichaseducatedpeopletosavewater、saveelectricity、planttreesandsoon.•June5thineachyearistheWorldEnvironmentalDay(世界环境日),inthisdaycountriesallovertheworldwilleducatepeopleaboutenvironmentalprotection,alsotheUNEP(世界环境规划署)willheldacommemorativeactivities,alsoitwilldrawupWorldEnvironmentDayThemes(世界环境日主题).Herearesomethemes:•OnlyoneEarth(只有一个地球)1974•Water:VitalResourceforLife(水，生命的重要源泉)1976•ForLifeonEarth(为了地球上的生命)1997•GiveEarthaChance(让地球充满生机)2002•YourPlanetNeedsYou-UNitetoCombatClimateChange（地球需要你：团结起来应对气候变化）2009•Isgreen,giveourlifethisworld;we,can.enjoybetterandbettersunning;feel,newsair.•是绿色，给这个世界了生命，我们，才，得以享用阳光的灿烂，感觉，空气的清新，一颗树，就是一首永恒的诗，与自然共处，是生活中的一个不变的主题，让我们停下手中的利斧，珍惜我们的环境。