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

Unit7TheSea,26ProtectingtheSea,Howistheseaimportanttopeople?,Peoplecangetseafoodsuchas:fish,seaanimalsandplants;Theseaisrichinmanynaturalresources.wecangetoil,naturalgasandsomemetals,besides,theseahasagreateffectonclimateontheearth.,Japaneseshiparekillingthewhale.,Howcrueltheyare!,Theseaisimportanttous.Butwiththedevelopmentofsociety,humanbeingsexploreandseizetheseawithoutlimit,asaresult,doharmtothesea.,over-fishing,Harvestfishnow,Whataboutthefuture?,Whathappened?,Theoiltankerwasupset,oilpouredintothesea.,Whatistheresult?,Whocansavethepoorbirds?,In1989anoiltankerhitarockoffthenorthwestcoastofAlaska.35,000tonsofoilpouredintothesea.Theaccidentwasoneoftheworstinhistory.Morethan34,000birdsand10.000animalswerekilled.4,8oosquarekilometersofoceanwerepolluted.,TheSeaisweeping,Whatwillhappen?,industrialwaste,redtide,Istherenothingwithus?,ChinahasbeenexperiencingincreasingredtidesofftheChinesecoastsincethe1990sduetoincreasingpollutioncausedbyindustrialwaste.Accordingtoanofficialreport,duringthepast20years,atotalof200redtideshavebeenregistered（经正式鉴定的）causing240millionU.S.dollarsindirecteconomiclosses.The45majorredtidesoccurredintheBohaiSea,theYellowSea,theEast,ChinaSeaandtheSouthChinaSea.About4billiontonsofindustrialwastewateraredischarged(排放)intotheseaeveryyear,resultingintheaccumulation（积累）oforganicpollutantsblamed（归咎于有机污染物）forthegrowingoutbreaksofdisastrousredtides.Redtidesmayalsodestroymarinelives（海洋生物）andbringharmtomarinecultivationindustries(海洋养殖业).,1.Youarelikelytonoticesomethingaboutseapollutioninyourcityorhometown,pleasetalkaboutit.,2.Ifwegoonpollutingtheseawhatistheresult?,Ifthegovernmentgoonallowingtheindustrialwastefromfactoriesintotheseaandrivers,itisnotsafetoeatthefish.Ifwegoonpouringtherubbishintothesea,itisnolongersafeforswimming,asalotofdiseasesarepresentinthewater.Ifwegoonpollutingthesealikethat,childreninthefuturewillnotseebeautifulbluesea.,3.Whatmeasuresdoyouthinkweshouldtake?,Thegovernmentshouldmakelawstoprotectthesea.Wetakeactionlikethemtoprotectthesea.,cleaningoil,ThepeopleoftheGreenPeaceOrganizationarestrugglingwiththeshipforcatchingwhales.,Whataretheydoing?,ZhiHongandFangZhouarealsotalkingaboutprotectingthesea.Whatwilltheysay?,Weshouldspreadtheknowledgeaboutprotectingtheseaandletpeoplerealizetheimportanceofthesea.,Listentothetapeandchoosetherightanswer.1.Whatcanbedoneaboutoverfishing?man-maderaisingfishB.IntheworstareastheybanfishingforseveralyearsC.controlthenumberoffishpeoplecancatch,2.Whatstheresultofoverfishing?A.therearelessfishtocatchB.peoplecanfishtoomuchC.Theycancatchmorefishthanbeforebybettertechnology,A.therearelessfishtocatch,3.Whataresomegovernmentdepartmentsdoingaboutseapollution?A.punishingpeoplewhokeeparecordoflevelsofpopulationB.thinkingofwaystoreducepopulationC.alldepartmentsmustberesponsibleforfindingwherepollutioncomesfrom,B.thinkingofwaystoreducepopulation,Listentothetapeagainandfillinthetape.1.Thatswhenpeoplefish_andthenumberoffish_.Somefishmaydisappearaltogether.2.Sotherearemorefisherman_?Well,theyhopeto_,butthereare_tocatch,sothey_.,toomuch,fallstoolow,catchingmorefish,catchmorefish,lessfish,simplycant,3.Itmostlycomesfrom_wastefrom_and_wastefrom_.4.Theyalsotrytohelppeopleto_,sothereare_tryingto_.,lesspeople,makingalivingfromfishing,industrial,agricultural,factories,farming,getotherkindsofjobs,2.Whatistheproblem2?,pollution,Over-fishing,Listentotheinterviewagainandanswerthequestions,1.Whatistheproblem1?,3.Whatarethereasonsforproblem2?,toomanyfishermaninthesameplace,bettertechnologycancatchmorefish.,4.Whatarethecausesofproblem1?,chemicals,plastic,rubbish,oil,industrywaste,fromfactoriesandagriculturalwaste.,5.Whatarethesolutionstoproblem1?,governmentdepartments,lookforwaystoreducepollution,keeparecordoflevelsofpollution,findingwhereitcomefrom,punishingpolluterswhobreakthelaw.,6.Whatarethesolutionstoproblem2?,Controlthenumberoffishthatpeoplecancatch,banfishingcompletelyforafewmonths,helppeopletogetotherkindsofjobs.,Readthroughtheexampledialoguethenmakeupanewonewithyourpartner.A:Whatareyougoingtodoforyourseaproject?B:Iminterestedinhistoryofseatravel.A:Oh,really?B:Yes.Iwanttoknowhowhumanbeingscrossedtheseatolandotherplacesinsmallboat.,A:Oh!Itishardtoimagine.B:Mm.Theywerebraveandcleverenoughtoexploreunknownland.A:Whatdoyoualreadyknowaboutthesubject?B:IknowitwasntColumbusbuttheVikingreachedAmericafirst.,A:Oh,werethey?B:Yes,lookattheoldmap.ItisthoughtthattheVikingdrawthemapthatwasusedbyColumbuslater.A:Mm.Itistoointeresting.Whatdoyouneedtofindoutaboutthesubject?,B:WhowerethefirstpeopletoreachAustralia?Howdidtheyarrive?A:Really?Howcanyoufindoutmoreaboutthesubject?B:IgetsomeinformationfrombooksandtheInternet.Illmakeacartoonaboutit.A:Mm,doyour