选修6Unit4公开课正式

这幅图片传达的意思是地球正在持续升温。可怜的最耐寒的北极熊，都脱去了他衣服。北极常年冰冻，十分寒冷，北极熊都受到了如此厉害的影响，可见全球变暖是多么的厉害。关爱环境，是迫在眉睫需要注意的事情。全球变暖是给我们埋下的定时炸弹，不定什么时候，就会爆炸。为了我们自身，我们也应该保护环境，保护地球。冰做的人代表人类，冰遇热会融化。全球变暖，冰人正在一点点融化，直至最后消失。这也预示着全球变暖是人类灾难的开始，为了我们能够更好的生存，我们应该用实际行动阻止全球变暖。二氧化碳的增多，是全球变暖的原因之一。树木能够将二氧化碳吸收转换成我们呼吸所需要的氧气。多种树木，是最微小的阻止全球变暖的举动。而很多地方还存在着乱砍乱伐现象。缺少的树木就像我们的肺发生了病变，呼吸不畅。阻止全球变暖，拒绝乱砍乱伐。globalwarming①Whatarethey?

②Whatarethesebuildingsmadeof?③What’stheuse?greenhouse/glassAgreenhouseisusedfor_____________,especiallyduring____weather.Pre-readingTurntoPre-reading1,Page25.Read&answer.growingplantscold_____theheatfromthesunkeepsitfrom_____________theairupHowdoesagreenhousework?trapsescapingheatsimaginethattheearthisagreenhouse,theatmosphere(大气层)istheglass,thenwhereistheheatfrom?andonlyfromthesun?2023/2/20Dowehaveanyeffectontheearth'swarming?2023/2/20Thingsthatconsumeenergyvideo

playerrefrigeratorcomputerhairdryerlight/TV/waterdispensercarwashingmachineenergysourcessolarenergyoilcoalbiomassenergynuclear

energyhydro-electricpowerwindpower……naturalgaswave/tidal

energycarbondioxideFossilFuel(矿物燃料)coaloilgas●●●●●●produceWhatdoyouthinkgreenhousegasesdo?Greenhousegasestraptheheatofthesunandthereforewarmtheearth.Itisknownas__________________.Nowadaysourearthisbecoming_____________________.greenhouseeffectwarmerandwarmerPage26Theearthisbecomingwarmerandwarmer,butdoesitmatter?FastReadingGlanceatthearticleandanswerthesequestions.2023/2/20SophieArmstrongwrotethemagazinearticle.Thenameofthemagazineis“Earthcare”.2.Whatarethenamesofthethreescientistsmentionedinthearticle?TheyareDr.JaniceFoster,CharlesKeelingandGeorgeHambley.1.Whowrotethemagazinearticle?Whatisthenameofthemagazine?2023/2/203.Whatarethetwographsabout?Graph1showsthetemperatureincreaseofonedegreeFahrenheitbetween1860to2000.Graph2showsthecarbondioxidecontentintheatmospherefrom1957to1997.Graph1:Graph2:2023/2/204.Whatisthemaintopicofthearticle?Globalwarming/Thewarmingoftheearth.2023/2/20Detailed-ReadingReadthearticleindetailsandfinishthefollowingtask.2023/2/201.During20thcentury,thetemperatureoftheearthrose

.

2.SophieArmstrongwillexplore

.Para.1aboutonedegreeFarenhait.howhasthiscomeabout

and

doesitmatter.Para.21.Thereisnodoubtthatitis

___________thathascausedtheglobalwarming.

humanactivityPara.31.Allscientistsagreetheviewthattheincreaseintheearth'stemperatureisdueto

___________.2.Whenweaddhugequantitiesofextracarbondioxideintoatmosphere,theproblembegins,whichmeans___________theburingoffossilfuelstheglobaltemperaturetogoup1.WhatdidthescientistCharlesKeelingfindbetweentheyearsfrom1957to1997?Hefoundthatthecarbondioxidewentupfromaround315partstoaround370partspermillion.Para.4Para.51.Allscientistsacceptthedataandagreethatitis

thathadresultedinthisincreaseincarbondioxide.2.

DrJaniceFostersaysthattheamountofwarmingcouldbe__________,butitcouldbe__________.theburningofmoreandmorefossilfuelsaslowas1to1.5degreeCelsiusashighas5degreeCelsiusDr.JaniceFosterthinkstheeffectsof

globalwarmingcouldbevery______.GeorgeHambley

thinksglobalwarmingwillbe______withfewbadenvironmentalconsequences.

They__________witheachother.

Para6seriousmilddon'tagreecausethesealeveltoriseseverestormsfloodsdroughtsfaminesthespreadofdiseasesdisappearanceofspeciesPositiveeffectsNegativeeffectscausethesealeveltoriseseverestormsfloodsdroughtsfaminesthespreadofdiseasesdisappearanceofspeciesPositiveeffectsNegativeeffectsmakeplantsgrowquickercropswillproducemoreagreaterrangeofanimalsmakelifebetterPara.71.Evenifwestart

____theamountofcarbondioxideandothergreenhousegases,theclimateisgoingtokeepon_______for10or100years.2.___________knowstheeffectsofglobalwarming.reducingwarmingNooneLet'sdoourparttoprotectit!tomaketheearth