unit4globalwarming课文分析辅导新人教版选修6

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1、Unit4GlobalwarmingTHEEARTHISBECOMINGWARMER—BUTDOESITMATTER?请根据下列任务预习课文，并在课堂上按照老师的引导检查各项任务的完成情况。TaskI.SkimmingReadthetext(P26-P27)quicklyandfillintheblanks.Thetextexplainsthe1.________oftheearth’sincreasingtemperatureandputsforwarddifferentviewsaboutthe

2、2.________ofincreasingcarbondioxideintheatmosphere.TaskII.CarefulreadingI.Readthetext(P26-P27)carefullyandfillintheblanks.Factsaboutglobalwarming★Thetemperatureoftheearthroseabout1.________Fahrenheitduringthe20thcentury.★Theglobalwarmingiscausedby2.___

3、_____insteadofarandomandnaturalphenomenon.ViewsonglobalwarmingDrJaniceFoster★Smallamountsofgasesintheatmospheretrap3.________fromthesunandthereforewarmtheearth.★Weneedthosegasesbecausewithoutthemtheearthwouldbeaboutthirty-threedegreesCelsius4.________t

4、hanitis.★Whenlargequantitiesofextra5.________wereaddedintotheatmosphere,theglobaltemperaturewentup.★Overthenext100yearstheamountofwarmingcouldbeaslowas1to1.5degreesCelsius,butitcouldbeashighas5degrees.★Anincreaseoffivedegreesinthetemperaturewouldbea(n)

5、6.________.GeorgeHambley★Anywarmingwillbemildwithfewbad7.________.★Morecarbondioxideisa(n)8.________thing,whichwillmakeplantsgrowquicker,cropsproducemoreandmoreanimalssurvive—allofwhichwillmakeourlifebetter.II.Choosethebestanswers.1.Whofoundouttheamoun

6、tofcarbondioxideintheatmospherefrom1957to1997?A.SophieArmstrong.       B.CharlesKeeling.C.DrFoster.                   D.GeorgeHambley.2.Whatisthepurposeofthelastparagraph?A.Tomakereadersdisappointedwiththeproblem.  B.Tomakereadersthinkabouttheproblem.C

7、.Toshowtheauthor’sopinionsontheproblem.   D.Tobeginsomediscussionaboutthefuture.答案Task I. 1.causes 2.effectsTaskII.I. 1.onedegree 2.humanactivity  3.heat 4.cooler  5.carbondioxide   6.catastrophe  7.environmentalconsequences      8.positiveII. 1-2BB