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2017年秋人教版高中英语选修六学案：UNIT4GLOBALWARMINGPERIOD1WARMINGUPANDREADING.doc

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Book6Unit4Globalwarming Period1Warmingupandreading 编者：王海虹修编：李慧 学习目标 1.理解课文，能了解温室效应对环境的影响。 2.通过课文的学习，提高阅读能力，提高学生的节能减排意识。 3.掌握与本课阅读有关的重点词汇，分析背诵课文中部分经典的句子。 自主合作探究 【探究1】Ⅰ.篇章结构. 阅读P26－27的Reading部分，完成下列表格 Duringthe20thcenturythetemperatureoftheearthroseabout1.degreeFahrenheit.Theburningof2._____likecoal， naturalgasandoiltoproduceenergy.Thelevelsofcarbondioxidehave3．greatlyoverthelast100to150years.CharlesKeelingfoundthatthecarbondioxideintheatmospherewentupfromaround4.partstoaround370partspermillionbetween1957and1997.DrJaniceFostersaysthattheamountofwarmingcouldbeaslowas1to1.5degrees Celsius，butitcouldbeashighas5degreesoverthenext5.___years.TheclimatecouldbeveryseriousAriseofseveralmetresinthe6..Severestorms，floods，7．，famines.Thespreadofdiseases.Thedisappearanceof8.______.Weshouldnotworryabouthighlevelsofcarbondioxideintheair. Itwillmakeplantsgrow9.；cropswillproduce10.；itwillencourageagreaterrangeofanimals. Ititwillencourageagreaterrangeofanimal 【探究2】II.正误判断。 （）1)Thetemperatureinthelastcenturydidn’tseemtoincreasemuchcomparedtoothernaturalchanges. （）2)Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans. ()3)Iftherewerenogreenhouseeffect,theearthwouldbemuchcooler. ()4)Theriseincarbondioxideiscausingasteadyincreaseinglobalwarming. ()5)GeorgeHambleybelievesthatglobalwarmingwilldogoodratherthanharmtohumanbeings. 【探究3】III.语篇理解.阅读P26－27的Reading部分，选择最佳答案 1．Howmuchdidthetemperatureriseinthe1900s? A．OnedegreeFahrenheit.B．OneCelsius.C．Twodegrees. 2．Whatcausesthetemperatureoftheearthtoincrease? A．Cuttingtrees.B．Wastingthefarmland.C．Burningfossilfuels. 3．Whoaccuratelymeasuredtheamountofcarbondioxideintheatmospherefrom1957to1997?A．DrJaniceFoster.B．CharlesKeeling.C．Fahrenheit. 4．AccordingtoGeorgeHambley，. A．globalwarmingisaveryseriousproblem B．there'snoneedtoworryaboutglobalwarming C．thelevelsofCO2intheairwillbecomelowerinthefuture 5．Wecaninferfromthetextthat. A．thedebateabouttheeffectsofglobalwarminghasnotbeensettled B．thegreenhouseeffectistheresultofpeople'sactions C．allsc