2017年秋人教版高中英语选修六学案：UNIT 4 GLOBAL WARMING PERIOD 1 WARMING UP AND READING-豆柴文库

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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