北师大版选修八Unit22 lesson1 Global warming课件.ppt

Unit22,EnvironmentalProtection,Lesson1,GlobalWarming,warm-up,Exercise1,Howmuchdoyouknowaboutenvironentalproblems?usethekeywordstocompletethesentences:,1.Earthquakesandvolcaniceruptionsareexamplesof.2.ThegiantpandaandtheBengaltigerare.3.Becauseof,theearthiswarmedbygasestrappedintheatmosphere.isanincreaseovertimeoftheaveragetemperatureoftheEarth.isharmfultotheecologyofthesea.6.ThousandsofpeopleinAfricacontinuetodiebecauseofwarand.7.Thewaterlevelrosesohighinseveralplacesthatmanyhomesareatriskfrom.,1.Earthquakesandvolcaniceruptionsareexamplesofnaturaldisasters.2.ThegiantpandaandtheBengaltigerareendangeredspecies.3.Becauseofthegreenhouseeffect,theearthiswarmedbygasestrappedintheatmosphere.4.GlobalwarmingisanincreaseovertimeoftheaveragetemperatureoftheEarth.5.Overfishingisharmfultotheecologyofthesea.6.ThousandsofpeopleinAfricacontinuetodiebecauseofwarandpoverty.7.Thewaterlevelrosesohighinseveralplacesthatmanyhomesareatriskfromflooding.,Answers,Exercise2,Listentothenewsreport.Whichofthestatementsaretrueorfalse?WriteTfortrueandFforfalse.,1.ThenewsreporterisworkinginAntarctica.2.Thenewsreportisaboutpenguins.3.Penguinshaveonlyonepartnerforlife.4.Fishingboatsdonotaffectthedeathsofpenguions.5.MostpenguinspeciesoutsideofAntarcticaaresafefromenvironmentalchanges.6.Expertscallforimmediateinternationalconservationefforts,F,T,T,F,F,T,Exercise3,Inpairs,discusswhichanimalsyouthinkareamongthetop5endangeredspeciesinChina?,物种代码010670001中文名白暨豚拉丁学名Lipotesvexillifer俗名白暨豚商品名英文名YangtzeRiverDolphinCITES公约附录附录IIUCN等级濒危红皮书等级濒危国家保护等级一级濒危原因回游被切断，过度捕猎，环境污染保护措施迁地保护,物种代码011050011中文名藏羚拉丁学名Pantholopshodgsoni俗名羚羊，藏羚羊商品名英文名Chiru,Tibetanantelope红皮书等级渐危国家保护等级一级濒危原因栖息地破坏，作为食物被捕猎，因为贸易被捕猎,白唇鹿的角很大别名岩鹿、白鼻鹿、黄鹿学名Cervusalbirostris英文名white-lippeddeer鹿科Cervidae分布青海、甘肃及四川西部、西藏东部国家一级保护动物,白唇鹿的体型大小与水鹿、马鹿相似。头骨泪窝大而深。唇的周围和下颌为白色，故名“白唇鹿”，为我国特产动物。成年雄鹿角的直线长可达1米，有4-6个分叉，雌性无角。蹄较宽大。通体呈黄褐色，臀斑淡棕色，没有黑色背线和白斑。栖息在海拔3500-5000米的高寒灌丛或草原上。白天常隐于林缘或其他灌木丛中，也构件登流石滩和裸岩峭壁，善于爬山奔跑。喜欢集群生活。主要采食禾本科、蓼科、景天科植物，也吃多种树叶，有食盐的习性。发情交配多在9-11月份，雄性间有激烈的争偶格斗，孕期8个月左右，每胎1仔，幼鹿身上有白斑。鹿茸产量较高，是名贵中药材。,物种代码011050018中文名赛加羚羊拉丁学名Saigatatarica俗名高鼻羚羊，大鼻羚羊商品名英文名SaigaAntelopeCITES公约附录附录IIIUCN等级濒危红皮书等级国内绝迹国家保护等级一级濒危原因栖息地破坏，过度捕猎，作为食物被捕猎，作为医药成分被捕猎，因为贸易被捕猎,物种代码011050007中文名喜马拉雅塔尔羊拉丁学名Hemitragusjemlahicus俗名喜马拉雅塔尔羊，毛羊，山羊商品名英文名HimalayanTahrCITES公约附录未列入IUCN等级资料不足红皮书等级稀有国家保护等级一级濒危原因过度捕猎,物种代码011050003中文名北山羊拉丁学名Capraibex俗名亚洲羊，红羊，悬羊商品名英文名IbexCITES公约附录未列入IUCN等级未列入红皮书等级濒危国家保护等级一级濒危原因作为食物被捕猎，栖息地破坏,物种代码010530009中文名云豹拉丁学名Neofelisnebulosa俗名乌云豹，龟纹豹，荷叶豹，艾叶豹，樟豹商品名英文名CloudedLeopardCITES公约附录附录IIUCN等级易危红皮书等级濒危国家保护等级一级濒危原因因为贸易被捕猎，作为医药成分被捕猎，作为食物被捕猎，栖息地破坏,物种代码011030010中文名麋鹿拉丁学名Elaphurusdavidianus俗名四不象商品名英文名PereDavidsDeerCITES公约附录未列入IUCN等级濒危红皮书等级野生绝灭国家保护等级一级濒危原因栖息地破坏，过度捕猎,物种代码011050008中文名红斑羚拉丁学名Naemorheduscranbrooki俗名红斑羚，红山羊，赤斑羚商品名英文名S.ChinaGoralCITES公约附录未列入IUCN等级未列入红皮书等级稀有国家保护等级一级濒危原因栖息地破坏，作为食物被捕猎，过度捕猎,物种代码011030017中文名黑麂拉丁学名Muntiacuscrinifrons俗名红头麂，蓬头麂商品名麝香英文名BlackfrontedMuntjacCITES公约附录附录IIUCN等级易危红皮书等级渐危国家保护等级一级濒危原因种内生物学特点，栖息地破坏，作为食物被捕猎，因为贸易被捕猎,Exercise4,Whatcanyoudotohelpsavethem?Writedownyoursuggestions,thenpresentyourideastotheclass.,reading,Exercise1,Ingroupsdiscusswhatyouknowaboutglobalwarming.Lookatthepicturestogetideas.,Exercise2,Whichcountriesdoyouthinkcontributemoretoglobalwarming:developedcountrieslikeAmerica,orundevelopedcountrieslikemanyinAfrica.Why?,Exercise3,Scanthetextbelowforthesewordsandworkouttheirmeanings:environmentalist:line1,peoplewhoareconcernedwithprotectingtheenvironmentradiate:line22,sendoutinalldirectionsatmosphericconcentration:line35,theamountofsuchgasesintheatmosphererelease:line33,allowtocomeoutinsignificant:line43,toosmallorunimportanttoconsiderorworryaboutconsequence:line44,somethingthathappensasaresultofadirectactionorsetofconditionsdramatic:line48,greatandsuddenenergy-efficient:line65,thathelpstosaveenergy,Exercise4,Readthetextandanswerthesequestions,1.Whatisglobalwarming?2.Whathumanactivitiesarecausingglobalwarming?3.Byhowmuchhastheglobalaveragetemperatureincreasedinthelast100years?4.AregreenhousegasesnecessaryforlifeonEarth?5.Howcanindividualshelpsolvetheproblemofglobalwarming?,GlobalwarmingisanaverageincreaseintheEarth;satmosphere.,Industry,agriculture,transportation,deforestationandtheburningoffuelsarecausingglobalwarming.,By1F,Yes,theyare.becausetheytrapheatintheatmosphereoftheEarth.OtherwisetheEarthwouldbecoldandunsunsuitableforlife.,Asindividualswecanmakesmallchangesliketakingpublictransport,recycling,usinglowflowshowerheads,buyingenergy-efficientlightbulbstohelpstopglobalwarming,vocabulary,Exercise6,beyondourcontrol,pumpinto,asaresultof,inlargequantities,referto,speedup1.Waterwaspumpedintothefishpondfromtheriver.2.Weallneedtospeeduptofinishintime.3.Thereisnothingmorewecando.Thesituationisnowbeyondourcontrol.Asaresultoftheaccident,sheisnowafraindofwater.5.Thescientistreferrdtoglobalwarmingatleastthreetimesinhisspeech.6.Thefactorywasproducinggreenhousegasesinlargequantities.,Usetheexpressonsintheboxinthecorrectformtocompletethesentences.,grammar,Exercise7,Whatverbsareusedinthetexttoreportthesestatements?,1.HumanbeingsarecausingchangesintheEarthsclimate.2.GasespumpedintotheEarthsatmospherehavebeenspeedinguptheprocessofglobalwarming.3.Globalwarmingcouldbeoneofthebiggestenvironmentalproblemsfacingthe21stcentury.4.Globalwarmingismostlyduetohumanactivities.5.Globalwarmingwillcausedramaticclimatechangesincludingmorefrequentfloods,heatwaves,anddroughts.,toreportthat,toclaimthat,tobelievethat,toinsistthat,towarnthat,Exercise8,Lookatthesesentencesfromthetextandexplainwhytheunderlinedverbsarenotthesametenseasthereportingverbs.,1.RecentreportsfromtheIPCCwarnedthatglobalwarmingwillcausedramaticclimatechanges.2.ScientistsfoundthatthetemperatureoftheEarthiscontrolledbygreenhousegases.,becauseititinthefuture,becauseitisageneraltruth,Exercise9,Matchthesentenceswithappropriatereportingverbsfromthelist.Thenwritethereportedsentences.,admit,boast,forbid,inquire,invite,order,suggest,threaten1.wellclosecreditlinesifyoudontreducecarbondioxideemissions.2.Ok,youreright,somepoisonouschemicalsdidescapeintotheatmosphere.3.Whydontyoudropintonight?4.Standupimmediately!5.imthe