高二英语课件高二英语上学期M6U4reading79高二英语课件

Unit4GlobalwarmingPeriod1Unit4EnergyresourcesCanyouguesswhatarethese?Doyouknowwhichkindofenergyresourcetheyuse?Checkyouranswersandthinkwhethertheyarerenewableornon-renewable.Windmills,wind,renewable.What?Whatkindofresource?Renewable?What?Whatkind?Renewable?Acoalpowerstation,coal,non-renewable.What?Whatkind?Renewable?Anoilrefinery(精炼厂),oil,non-renewable.What?Whatkind?Renewable?Anuclearpowerplant,uranium(铀),non-renewable.What?Whatkind?Renewable?Solarpanels,sunlight,renewable.What?Whatkind?Renewable?Ahydro-electricdam,water,renewable.Unit4Non-renewableRenewableCoalOilNaturalgasUraniumWind(windpower)Sun(solarenergy)Water(hydro-electricpower)Plantwaste(biomassenergy)Hotspringsorgeysers(geothermalenergy地热能)Thesea(tidalenergy潮汐能)FossilfuelsUnit4Greenhousegases!Whataregreenhousegases?What’sgreenhouseeffect?Unit4Readthepassagequickly…Whatarethenamesofthethreescientistsmentioned?Whatarethetwographsabout?What’sthemaintopicofthearticle?Whatarethenamesofthethreescientistsmentioned?DrJaniceFoster,CharlesKeeling,GeorgeHambley.Whatarethetwographsabout?ThefirstgraphshowsthetemperatureofonedegreeFahrenheitbetween1860-2000.TheSecondgraphshowsthecarbondioxidecontentintheatmospherefrom1957-1997.What’sthemaintopicofthearticle?Globalwarming/thewarmingoftheearth.Trueorfalse!1Thetemperaturelastcenturydidn'tincreasemuch.2Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.3JaniceFosterbelievesthatglobalwarmingiscausedbyburningfossilfuels.4Naturalgasisagreenhousegas.5Carbondioxideisabyproductofburningfossilfuels.6PeopleacceptCharlesKeeling'sdatabecausehetookaccuratemeasurements.×××√√√7Floodingcouldbeoneoftheeffectsoffutureglobalwarming.8GeorgeHambleybelievesscientistsarejustguessingabouttheeffectsofglobalwarming.9GeorgeHambleyisworriedabouttheeffectsofcarbondioxideonplantgrowth.10Itisclearwhattheeffectsofglobalwarmingwillbe.√√××Unit4Readforthedetails.What’sthemainideaofthepassage?The__________havedifferentideasonwhetherit__________whentheearthisbecoming__________.scientistsmatterswarmerUnit4Parts.Part1(Para1):Thereisafiercedebateoverwhathascausedthisglobalwarming.Part2(Para2-7)Somescientiststhinkthatglobalwarmingcouldbeserious.Part3(Para8)Somethinkthatweshouldnotworrymuchaboutglobalwarming.Unit4Parts.Part4(Para9):Nooneknowswhatistheeffecttsofglobalwarmingwillbe.ThedifferentideasbetweenDr.JaniceFoster&GeorgeHambleyDr.JaniceFosterGeorgeHambleyCarbondioxidehascausedtheglobaltemperatureto__________.Anincreaseoffivedegreeswouldbea____________andcouldbe______________.Morecarbondioxideisa__________thing,whichmakescrops__________andwillen-courage___________________________.catastropheveryseriouspositiveproduceagreaterrangeofanimalsgoupUnit4HomeworkassignmentPreparethelanguagepointsofthispassageandunderlinetheimportantones.Afterrememberingthevocabulary,dotheexerciseonPage28.