【课件】Unit+3Reading+and+Thinking+课件人教版（2019）选择性必修第三册

Earthprovidesenoughtosatisfyeveryman’sneeds,butnoteveryman’sgreed.Lead-inWatchthevideobelow.What’stheenvironmentalprobleminthevideo?ThinkandtalkWhatotherconsequencesmayglobalwarmingbringabout?heatwavedroughtThinkandtalkmeltingicefloodWhatotherconsequencesmayglobalwarmingbringabout?ThinkandtalkWhatotherconsequencesmayglobalwarmingbringabout?ThinkandtalkGlobalwarminganimalsdyingtheriseofsealevelwildfireeconomiclossesextremeweathernaturaldisastersWhatotherconsequencesmayglobalwarmingbringabout?Earthprovidesenoughtosatisfyeveryman’sneeds,butnoteveryman’sgreed.—MohandasK.Gandhi地球能满足人类的需要，但满足不了人类的贪婪。EvidenceCauseResultSolutionsScanPara.1-2tofinishthefollowingchartTask2Evidence(para1-2)

1.awarmingoceanandatmosphere

2.meltingice3.risingsealevels4.adeadpolarbearEvidence

Wehaveknownaboutclimatechangefordecades.ThereislittledoubtthatEarthisgettingwarmerandwarmer(seethegraph).Awarmingoceanandatmospherealongwithmeltingiceandrisingsealevelsprovideevidenceofadramaticchangeintheglobalclimate.Thereislittle/nodoubtthat...毫无疑问...本句是复合句。Thereislittle/nodoubtthat...“毫无疑问...”，that引导同位语从句，解释说明doubt的具体内容。Thereislittledoubtabout/whether...对/对是否...有些疑问。Idoubtwhether/if...我怀疑是否...Idon’tdoubtthat...我确信...alongwith与...一起我们了解气候变化已有数十年之久了。毫无疑问，地球正变得越来越温暖（如图）。海洋和大气变暖，以及冰层融化、海平面上升，都为全球气候急剧变化提供了依据.In2013,alotofpeoplewereshockedbyanewsphotoofadeadpolarbearthatwasfoundonNorway'sArcticislandofSvalbard.Accordingtothescientistswhofounditsdeadbody,allthatremainedofthepolarbearwas"skinandbones".Anexpertwhohasstudiedpolarbearsformanyyearssaidthatfromthepositionofitsdeadbody,thebearappearedtohavestarvedanddied.Expertsclaimed

thatlowsea-icelevelscausedbyclimatechangemeantthebearcouldnothuntsealsasbefore,soithadtotravelgreaterdistancesinordertofindfood.ThisalarmingcaseshowedhowtheincreaseintemperaturehadanimpactonEarth'secology.2013年，在挪威的北极圈斯瓦尔巴群岛的一个岛上，（人们）发现了一只死亡的北极熊，这张新闻图片令许多人感到震惊。据发现北极熊尸体的科学家说，这只北极熊仅剩"皮包骨"。一位长期研究北极熊的专家说，从尸体的姿势看，这只北极熊像是饿死的。专家称，气候变化导致的海冰面降低意味着北极熊无法像以前那样捕食海豹，于是它只能长途跋涉去寻找食物。这一令人惊恐的案例反映了气温上升对地球生态造成的影响。Greenhouseeffect5..greenhouseeffect7..

greenhouseeffect6.

8.ScanPara.3tofinishthefollowingchartTask2Causes(para3)

Impactsnatural

man-madeKeepearth’surfacewarmandhabitableTheearth’surfacetemperaturewillrisequicklyifmoreheatenergyistrappedintheatmosphere

Thenwhatiscausingtheincreaseintheglobalaveragesurfacetemperature?Climatescientistsoftenmentionakeyclimateprocesscalledthe"greenhouseeffect",whichhastwocommonmeanings:the"natural"greenhouseeffectandthe"man-made"greenhouseeffect.The"natural"greenhouseeffectreferstothefactthatheatfromthesunenterstheatmosphereandwarmsEarth'ssurfaceasshort-waveradiation.Theheatisreleasedbackintospaceatlongerwavelengths.Greenhousegasesintheatmosphere,suchasmethaneandcarbondioxide,trapsomeoftheheat,keepingEarth’sclimatewarmandhabitable.Withoutthisprocess,Earthcouldnotsustainlife.

那么，到底是什么导致全球平均地表温度上升呢？气候科学家常常会提到一个关键的气候过程﹣-"温室效应"；它有两个常见的含义："天然"温室效应和"人造"温室效应。"天然"温室效应指的是来自太阳的热量以短波辐射的形式进人大气层，使地表变暖。热量以更长的波长释放回太空。大气中的温室气体，如甲烷和二氧化碳，会吸收一些热量，使地球气候保持温暖和适宜居住。没有这个过程，地球就无法维持生命。However,the"man-made"greenhouseeffecthasnowbecomeabigproblem.Whenpeopleproducehugeamountsofextragreenhousegasesbyburningfossilfuels,moreheatenergyistrappedintheatmosphereandcausesEarth'ssurfacetemperaturetorisequickly.然而，"人造"温室效应现在却成为一个大问题。当人类由于燃烧化石燃料产生了大量额外的温室气体，更多的热能被困在大气层中，导致地表温度迅速上升。Task4Results(para.4)

ScanPara.4tofinishthefollowingchartResults9.

10.

notonly11.

.butalso12.

.extreme13.

and14.

causingdeathsandeconomiclossesextremeweathernaturaldisasterscausingseriousdamagecostinghumanlivesrainstormheatwaves

Thereisstrongandcomprehensiveevidencethattheriseintemperaturehasledtoanincreaseinextremeweatherandnaturaldisastersworldwide,notonlycausingseriousdamage,butalsocostinghumanlives.Climatescientistshavewarnedthatifwedonottakeappropriateactions,thiswarmingtrendwillprobablycontinueandtherewillbeahigherpricetopay.Infact,newsreportsarefrequentlybroadcastaboutextremerainstormsandheatwavescausingdeathsandeconomiclosses.确凿、全面的证据表明，温度上升导致全球极端天气和自然灾害增多，不仅造成严重破坏，而且使人丧命。气候学家已发出警告：如果我们不采取适当的行动，这种变暖的趋势可能会持续下去，而我们将为此付出更大的代价。事实上，有关极端暴风雨和热浪造成死亡和经济损失的新闻报道已屡见不鲜。Solutionsgovernmentindividuals15.16.

17.18.ScanPara.5tofinishthefollowingchartTask5Solutions(para.5)

makepoliciestakeappropriateactionsandmeasurestoreducegreenhousegasemissionsrestricttheamountofcarbondioxideourlifestyleproduceeducateeveryoneaboutglobalwarming,alongwithitscausesandimpacts

Continuedgreenhousegasemissionswillresultinfurtherwarmingandlong-lastingchangestotheglobalclimate.Thisrequirestheattentionofpeopleallovertheworld.Governmentsneedtoconsidermakingpoliciesandtakingappropriateactionsandmeasurestoreducegreenhousegasemissions.温室气体的持续排放将导致全球气候进一步变暖，并带来持久的变化。这需要全世界人的关注。各国政府需考虑制定政策并采取适当的行动和措施以减少温室气体的排放。

Weasindividualscanalsoreduceour"carbonfootprint"byrestrictingtheamountofcarbondioxideourlifestylesproduce.Itisourresponsibilitytoseizeeveryopportunitytoeducateeveryoneaboutglobalwarming,alongwithitscausesandimpacts,becausethisisthemostseriousissueaffectingallofusonthisplanet.Sowhatwillyoudotohelp?作为个人，我们可以通过限制生活方式产生的二氧化碳量来减少我们的"碳足迹"。我们有责任抓住每一个机会，教育每个人了解全球变暖，包括其成因和影响，因为这是影响这个星球上我们所有人的最严重的问题。那么，你会做些什么来贡献力量呢？Climatechange

Evidence

SolutionsCausesEffects

governmentindividualsextremeweathernaturaldisastersGreenhouseeffectnatural

greenhouseeffectman-made

greenhouseeffectAbetterunderstandingofclimatechange?1.Whydoestheauthormentionthephotoofthedeadpolarbearinthefirstparagraph?A.Tointroducethetopicofthistext.B.Toshowusthecoldweatherinthearctic.C.Toshowthetemperatureincreaseinthe

arctic.D.Totellustheimportanceofwarmth.2.Theweatheronearthisgettinghotterand

hottermainlybecauseof__________.A.naturalgreenhousegasesB.man-m