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Unit2SavingtheEarthSectionCTopic2
Alltheseproblemsareveryserious.Warming-upGuess:WhathappenstotheEarth?Pre-readingWhat’sthegreenhouseeffectorglobalwarming?Carbondioxide(二氧化碳)increasesalotandformsa“blanket”tostoptheheatfromthesunfromescapingfromtheearth.Sothetemperatureisrising.Thisiscalled“thegreenhouseeffect”or“globalwarming”.Freetalkozonelayer臭氧层What’sozonelayer?Ozoneisaspecialkindofoxygen.Itcanprotecttheearth.Nowpeopleproducelotsofharmfulchemicalsintotheair.Theycauseabigholeintheozonelayer.Sotheradiationcanpassthroughtheholeandreachtheearthdirectly.Pre-readingduringthisperiod在此期间takeaway拿走e.g.CanItakeawaythisbook?formv.
出现;形成n.种类,形式risev.上升;起床;升起
escapev.渗出;逃跑LanguagepointsPre-readingLookandpredictThemainideaofthepassagemaybe________________________________.theproblemsaboutourenvironmentPre-readingfewertreesfactorypollutiontrafficpollutiontheozonelayermorecarbondioxideListenandmatchWhile-reading_________Allovertheworld,peoplehavecutdownmillionsoftrees.Whenitrainsorwhenthewindblows,theearthistakenaway.Forestshavebecomedeserts,somanykindsofanimalsandplantsaredisappearing.Choosesuitabletitlesforparagraphs2—6CA.TrafficpollutionB.FactorypollutionC.FewertreesD.TheozoneholeE.MorecarbondioxidePara.2While-readingA.TrafficpollutionB.FactorypollutionC.FewertreesD.TheozoneholeE.MorecarbondioxidePara.3While-readingPara.4_________
Inbigcities,carsandbuseshavepollutedtheair.Nowmanypeopleincitieshavehealthproblems.A_________Factorieshavealsopollutedthelandandthewater.Asaresult,manyriversandlakesarenowdead.BA.TrafficpollutionB.FactorypollutionC.FewertreesD.TheozoneholeE.MorecarbondioxidePara.5While-reading_________
Aroundtheearth,there’saspecialkindofoxygencalled“ozone”(O3).Itisimportanttotheearth.Butnowairpollutionisdestroyingitandmakingaverybigholeintheozonelayer.Toomuchharmfulradiationfromthesunpassesthroughtheholeandreachestheearthdirectly.Thisisverydangerousbecausethiskindofradiationcancausecancer.
DA.TrafficpollutionB.FactorypollutionC.FewertreesD.TheozoneholeE.MorecarbondioxidePara.6While-reading_________Carbondioxide(CO2)intheairhasincreasedalot.Itmainlycomesfromburningoil,coalandwood.Thishasformedablanketaroundtheearth.Theheatfromthesuncan’tescapesothetemperatureisrising.Thisiscalled“thegreenhouseeffect”.Itcausestheleveloftheoceanstoriseandtheclimateoftheearthtochange.
EReadandcompletethefollowingtask1.Whatdoesourplanetmeanhere?
A.Thesun. B.Mars.
C.Themoon. D.Theearth.2.Inthepassage,blanketrefersto_____.A.carbondioxidearoundtheearthB.theozonelayerinthesky
C.theforestsaroundtheworldD.pollutionallovertheworld3.TheworditinParagraph5refersto_____.
A.CO2B.O3C.O2D.H2OWhile-readingCompletethenotesProblemEffectontheenvironmentfewertreesforestsbecomedeserts,animalsandplantsdisappeartrafficpollutiongreenhouseeffect,levelofoceansrising,climatechange……carsandbusespolluteair,healthproblemspollutelandandwater,riversandlakesdeadharmfulradiationreachestheearth,causecancerfactorypollutionozoneholemoreCO2While-readingCombinethekeypointsinthetabletoformashortpassagePost-readingProblemEffectontheenvironmentfewertreesforestsbecomedeserts,animalsandplantsdisappeartrafficpollutiongreenhouseeffect,levelofoceansrising,climatechangecarsandbusespolluteair,healthproblemspollutelandandwater,riversandlakesdeadharmfulradiationreachestheearth,causecancerfactorypollutionozoneholemoreCO2AppreciateapossibleversionAsweallknow,waterpollutionisbecomingmoreandmoreserious.Somefactoriespourwastewaterintotherivers.Asaresult,itmakesthewaterdirtyandsmellterrible.Mostoffishinthewaterhavediedandwecan’tswiminthewater.Waterisveryimportanttohumanbeings,soweshoulddoourbesttoprotectandsaveit.Luckily,ourgovernmentistakingmeasurestoprotectthewaterfrompollution.Post-readingSummaryProblemEffectontheenvironmentfewertreesforestsbecomedeserts,animalsandplantsdisappeartrafficpollutiongreenhouseeffect,levelofoceansrising,climatechangecarsandbusespolluteair,healthproblemspollutelandandwater,riversandlakesdeadharmfulradiationreachestheearth,c
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