高中英语 Unit 7 The sea Lesson 26 Protecting the Sea课件 北师大版必修3.ppt

高中英语 Unit 7 The sea Lesson 26 Protecting the Sea课件 北师大版必修3.ppt

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大小:2.61 MB

页数:30页

时间:2020-03-31

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1、Unit7TheSea26ProtectingtheSeaHowistheseaimportanttopeople?Peoplecangetseafoodsuchas:fish,seaanimalsandplants;Theseaisrichinmanynaturalresources.wecangetoil,naturalgasandsomemetals,besides,theseahasagreateffectonclimateontheearth.Japaneseshiparekillingthewhale.Howcruelt

2、heyare!!!Theseaisimportanttous.Butwiththedevelopmentofsociety,humanbeingsexploreandseizetheseawithoutlimit,asaresult,doharmtothesea.over-fishingHarvestfishnow,Whataboutthefuture?Whathappened?Theoiltankerwasupset,oilpouredintothesea.Whatistheresult?Whocansavethepoorbird

3、s?In1989anoiltankerhitarockoffthenorthwestcoastofAlaska.35,000tonsofoilpouredintothesea.Theaccidentwasoneoftheworstinhistory.Morethan34,000birdsand10.000animalswerekilled.4,8oosquarekilometersofoceanwerepolluted.TheSeaisweepingWhatwillhappen?industrialwasteredtideIsthe

4、renothingwithus?ChinahasbeenexperiencingincreasingredtidesofftheChinesecoastsincethe1990sduetoincreasingpollutioncausedbyindustrialwaste.Accordingtoanofficialreport,duringthepast20years,atotalof200redtideshavebeenregistered(经正式鉴定的)causing240millionU.S.dollarsindirectec

5、onomiclosses.The45majorredtidesoccurredintheBohaiSea,theYellowSea,theEastChinaSeaandtheSouthChinaSea.About4billiontonsofindustrialwastewateraredischarged(排放)intotheseaeveryyear,resultingintheaccumulation(积累)oforganicpollutantsblamed(归咎于有机污染物)forthegrowingoutbreaksofdis

6、astrousredtides.Redtidesmayalsodestroymarinelives(海洋生物)andbringharmtomarinecultivationindustries(海洋养殖业).1.Youarelikelytonoticesomethingaboutseapollutioninyourcityorhometown,pleasetalkaboutit.2.Ifwegoonpollutingtheseawhatistheresult?Ifthegovernmentgoonallowingtheindustr

7、ialwastefromfactoriesintotheseaandrivers,itisnotsafetoeatthefish.Ifwegoonpouringtherubbishintothesea,itisnolongersafeforswimming,asalotofdiseasesarepresentinthewater.Ifwegoonpollutingthesealikethat,childreninthefuturewillnotseebeautifulbluesea.3.Whatmeasuresdoyouthinkw

8、eshouldtake?Thegovernmentshouldmakelawstoprotectthesea.Wetakeactionlikethemtoprotectthesea.cleaningoilThepeopleoftheG

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