【課件】Unit+3Reading+and+Thinking+課件人教版（2019）選擇性必修第三冊

Earthprovidesenoughtosatisfyeveryman’sneeds,butnoteveryman’sgreed.Lead-inWatchthevideobelow.What’stheenvironmentalprobleminthevideo?ThinkandtalkWhatotherconsequencesmayglobalwarmingbringabout?heatwavedroughtThinkandtalkmeltingicefloodWhatotherconsequencesmayglobalwarmingbringabout?ThinkandtalkWhatotherconsequencesmayglobalwarmingbringabout?ThinkandtalkGlobalwarminganimalsdyingtheriseofsealevelwildfireeconomiclossesextremeweathernaturaldisastersWhatotherconsequencesmayglobalwarmingbringabout?Earthprovidesenoughtosatisfyeveryman’sneeds,butnoteveryman’sgreed.—MohandasK.Gandhi地球能滿足人類的需要，但滿足不了人類的貪婪。EvidenceCauseResultSolutionsScanPara.1-2tofinishthefollowingchartTask2Evidence(para1-2)

1.awarmingoceanandatmosphere

2.meltingice3.risingsealevels4.adeadpolarbearEvidence

Wehaveknownaboutclimatechangefordecades.ThereislittledoubtthatEarthisgettingwarmerandwarmer(seethegraph).Awarmingoceanandatmospherealongwithmeltingiceandrisingsealevelsprovideevidenceofadramaticchangeintheglobalclimate.Thereislittle/nodoubtthat...毫無疑問...本句是復合句。Thereislittle/nodoubtthat...“毫無疑問...”，that引導同位語從句，解釋說明doubt的具體內(nèi)容。Thereislittledoubtabout/whether...對/對是否...有些疑問。Idoubtwhether/if...我懷疑是否...Idon’tdoubtthat...我確信...alongwith與...一起我們了解氣候變化已有數(shù)十年之久了。毫無疑問，地球正變得越來越溫暖（如圖）。海洋和大氣變暖，以及冰層融化、海平面上升，都為全球氣候急劇變化提供了依據(jù).In2013,alotofpeoplewereshockedbyanewsphotoofadeadpolarbearthatwasfoundonNorway'sArcticislandofSvalbard.Accordingtothescientistswhofounditsdeadbody,allthatremainedofthepolarbearwas"skinandbones".Anexpertwhohasstudiedpolarbearsformanyyearssaidthatfromthepositionofitsdeadbody,thebearappearedtohavestarvedanddied.Expertsclaimed

thatlowsea-icelevelscausedbyclimatechangemeantthebearcouldnothuntsealsasbefore,soithadtotravelgreaterdistancesinordertofindfood.ThisalarmingcaseshowedhowtheincreaseintemperaturehadanimpactonEarth'secology.2013年，在挪威的北極圈斯瓦爾巴群島的一個島上，（人們）發(fā)現(xiàn)了一只死亡的北極熊，這張新聞圖片令許多人感到震驚。據(jù)發(fā)現(xiàn)北極熊尸體的科學家說，這只北極熊僅剩"皮包骨"。一位長期研究北極熊的專家說，從尸體的姿勢看，這只北極熊像是餓死的。專家稱，氣候變化導致的海冰面降低意味著北極熊無法像以前那樣捕食海豹，于是它只能長途跋涉去尋找食物。這一令人驚恐的案例反映了氣溫上升對地球生態(tài)造成的影響。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，到底是什么導致全球平均地表溫度上升呢？氣候科學家常常會提到一個關(guān)鍵的氣候過程﹣-"溫室效應"；它有兩個常見的含義："天然"溫室效應和"人造"溫室效應。"天然"溫室效應指的是來自太陽的熱量以短波輻射的形式進人大氣層，使地表變暖。熱量以更長的波長釋放回太空。大氣中的溫室氣體，如甲烷和二氧化碳，會吸收一些熱量，使地球氣候保持溫暖和適宜居住。沒有這個過程，地球就無法維持生命。However,the"man-made"greenhouseeffecthasnowbecomeabigproblem.Whenpeopleproducehugeamountsofextragreenhousegasesbyburningfossilfuels,moreheatenergyistrappedintheatmosphereandcausesEarth'ssurfacetemperaturetorisequickly.然而，"人造"溫室效應現(xiàn)在卻成為一個大問題。當人類由于燃燒化石燃料產(chǎn)生了大量額外的溫室氣體，更多的熱能被困在大氣層中，導致地表溫度迅速上升。Task4Results(para.4)

ScanPara.4tofinishthefollowingchartResults9.

10.

notonly11.

.butalso12.

.extreme13.

and14.

causingdeathsandeconomiclossesextremeweathernaturaldisasterscausingseriousdamagecostinghumanlivesrainstormheatwaves

Thereisstrongandcomprehensiveevidencethattheriseintemperaturehasledtoanincreaseinextremeweatherandnaturaldisastersworldwide,notonlycausingseriousdamage,butalsocostinghumanlives.Climatescientistshavewarnedthatifwedonottakeappropriateactions,thiswarmingtrendwillprobablycontinueandtherewillbeahigherpricetopay.Infact,newsreportsarefrequentlybroadcastaboutextremerainstormsandheatwavescausingdeathsandeconomiclosses.確鑿、全面的證據(jù)表明，溫度上升導致全球極端天氣和自然災害增多，不僅造成嚴重破壞，而且使人喪命。氣候?qū)W家已發(fā)出警告：如果我們不采取適當?shù)男袆?，這種變暖的趨勢可能會持續(xù)下去，而我們將為此付出更大的代價。事實上，有關(guān)極端暴風雨和熱浪造成死亡和經(jīng)濟損失的新聞報道已屢見不鮮。Solutionsgovernmentindividuals15.16.

17.18.ScanPara.5tofinishthefollowingchartTask5Solutions(para.5)

makepoliciestakeappropriateactionsandmeasurestoreducegreenhousegasemissionsrestricttheamountofcarbondioxideourlifestyleproduceeducateeveryoneaboutglobalwarming,alongwithitscausesandimpacts

Continuedgreenhousegasemissionswillresultinfurtherwarmingandlong-lastingchangestotheglobalclimate.Thisrequirestheattentionofpeopleallovertheworld.Governmentsneedtoconsidermakingpoliciesandtakingappropriateactionsandmeasurestoreducegreenhousegasemissions.溫室氣體的持續(xù)排放將導致全球氣候進一步變暖，并帶來持久的變化。這需要全世界人的關(guān)注。各國政府需考慮制定政策并采取適當?shù)男袆雍痛胧┮詼p少溫室氣體的排放。

Weasindividualscanalsoreduceour"carbonfootprint"byrestrictingtheamountofcarbondioxideourlifestylesproduce.Itisourresponsibilitytoseizeeveryopportunitytoeducateeveryoneaboutglobalwarming,alongwithitscausesandimpacts,becausethisisthemostseriousissueaffectingallofusonthisplanet.Sowhatwillyoudotohelp?作為個人，我們可以通過限制生活方式產(chǎn)生的二氧化碳量來減少我們的"碳足跡"。我們有責任抓住每一個機會，教育每個人了解全球變暖，包括其成因和影響，因為這是影響這個星球上我們所有人的最嚴重的問題。那么，你會做些什么來貢獻力量呢？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