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ID:38521284
大小:2.88 MB
页数:31页
时间:2019-06-14
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1、WordsstudyUnit4Globalwarming—Reading授课人刘胜丽Whatcausestheglobalwarming?Humanactivityorarandombutnaturalphenomenon?Thinkabout:Carbondioxidecoaloilnaturalgasglobalwarming●●●●●●Why?FossilFuelLookatthefollowingpictures.Whatdothepicturesshow?Humanactivity---burningoffossilfuels.Greenhouseeffect---greenhous
2、egases---weneedthosegases.WeaddhugequantitiesofextracarbondioxidetotheatmospherebyburningFossilfuels.学科网学科网学科网GreenhouseeffectWhataretheeffectsanddisastersofglobalwarming?What’sworse,theglaciers(冰川)oftheSouthPolearebeginningtocrack(破裂)TheglaciersofthePolesarestartingtomeltduetotheincreasingtemperatu
3、rescausedbyglobalwarming.tsunamiThesealeveltorise.tornadosSeverestormsdroughtsfaminesthespreadofdiseasesdestructionofspeciesTheEarthIsBecomingWarmer–ButDoesItMatter?ReadingFast-ReadingWhat’sthemaintopicofthearticle?It’saboutglobalwarmingthewarmingoftheearth.skimming2.Whowrotethemagazinearticle?What
4、isnameofthemagazine?TheyareDr.JaniceFoster,CharlesKeelingandGeorgeHambley.ReadingComprehensionIskimming3.Whathascausedglobalwarming?Humanactivity.4.Whatdoscientiststhinkmakestheearth’stemperaturegoup?Theburningoffossilfuels.skimming5.Howdoes“greenhouseeffect”comeabout?Itcomesaboutwhensmallamountsofg
5、asesintheatmospheretrapheatfromthesunandthereforewarmtheearth.Trueorfalse?(P27)scanningReadingComprehensionII2Thetemperatureinthelastcenturydidn’tseemtoincreasemuch.2.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.3.JaniceFosterbelievesshecanmeasurethefutureglobalriseintemperature.
6、4.Theriseincarbondioxideiscausingasteadyincreaseinglobalwarming.5.GeorgeHambleybelievesthatglobalwarmingwilldogoodratherthanharmtotheearth.6.Itisclearwhattheeffectsofglobalwarmingwillbe.1.Thepurposeofthefirstparagraphisto___.introducethewriterB.explainachangeC.introducethetopicD.raiseaquestion2.Theg
7、raphsareusedto_____.illustratepointsbyprovidingevidencetellthechangeoftemperaturetellthecontentofcarbondioxideintheairinterestthereadersskimmingReadingComprehensionIII3.Greenhousegasesreferto_______.c
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