mydearteachers，fellowstudentsandfriends：goodafternoon.
asweallknow,theearthisaplanetalmostcoveredbywater，anditiswatermadeeverythingontheearthlively.waterisalsooneoftheimportantpartofourenvironment.though，istherereallysomuchwaterforustoclean，toproducemanythings，toplaywith?howmuchwaterarethereontheearththen?
mostofthewaterisintheoceansorlockedawayasice.thelargestvolumesoffreshwaterarestoredundergroundasgroundwater，imaginethereisonlyonebarrelofwaterintheworld，thenthereisonlyaspoonofitontheland，andthewaterwecanuseisonlyadropofit.nowihavetoremindallofyouherethatthesingledropofwaterisneverascleanasbefore，ithasbeenpollutedseverelybyourhumanbeings.
thereisaverybeautifulriverinparis.itistheseine，itrunsacrossthecity，peopledrinkcoffee,chatonthebankintheday，atnight，theyenjoythebeautifulsceneryintheboat，songsfromtheriverflyintotheskymadetherivermoreattractive,theseineisafamoussymboloffrance;onthewestcoastofpacificoceanthereliesthemoderncityshanghai，anotherriverwhichusedtobeaveryimportanttransportationrouterunsthroughthecenterofthecity，peoplerespectedandregarditas"mother".itisthe"suzhouriver，butlbelievethatfewofyouwouldsitbesideit，peoplewillbescatteredbytheterriblesmellofwaterwhenwalkby.ihavetosayitisextremelydirty!andweallknowthatalotofbeautifulriversintheworldalsoaresharingthesamefatewithsuzhouriver.whoisthedevil?ican'thelpasking.
manyhumanactivitiesandtheirby-productshavethepotentialtopollutewater.pleasehavealookalongthebanksoftheriver,largeandsmallindustrialenterprisesdischargedirty
water,tonsofgarbagewerethrownintotheriver,thewatercontainedsomuchthatitcan'tcleanitself.comparedwiththedramaticdevelopmentinmanysidesofshanghai,thesuzhouriverhasbecomeablackpointoftheappearanceofcity.
fortunately,thegovernmenthascontrolthesituationnow,wearehappytoseesomepartsoftheriverhasbecomecleanagain,andweevencanfindfishsometime.
theuniqueearthistheonlyplanetfulloflives,thewaterisjustlikethebloodintheactivebody,protectingwaterissavingourselves.nottowasteasingledropofwater,otherwise,theonlydropofwaterwecouldkeepinthefuturewouldbeourtear!
mydearfriends,mankindstillfacesagreatdifficultyinsolvingtheproblemsoftheenvironmentanddevelopment,andthereisagrandtasktoperformandalongwaytogo.themiddleschoolstudentsinchinawillalwayscooperatewiththeyoungpeopleoftheworldtoprotecttheenvironment.
thefutureisourstobuild!
thanksforlistening.