Unit3EnvironmentalProtectionReadingandThinking学习任务单-高中英语人教版选择性

Unit3EnvironmentalProtectionReadingandThinking任务单

课程基本信息课题Unit3EnvironmentalProtectionReadingandThinking学习目标Inthisclass,studentswill:Tohaveabetterunderstandingofclimatechangeandglobalwarming；Toanalyzemainideas,genre,structure,methodsandlanguagefeaturesofthepassage;Tobeabletoapplyreadingskillstoappreciateexpositionpassages.课前学习任务ClimateChangeRequiresWorld’sAttentionWehaveknownaboutclimatechangefordecades.____1____Awarmingoceanandatmospherealongwithmeltingiceandrisingsealevelsprovideevidenceofadramaticchangeintheglobalclimate.In2013,alotofpeoplewereshockedbyanewsphotoofadeadpolarbearthatwasfoundonNorway'sArcticislandofSvalbard.Accordingtothescientistswhofounditsdeadbody,allthatremainedofthepolarbearwas"skinandbones".Anexpertwhohasstudiedpolarbearsformanyyearssaidthatfromthepositionofitsdeadbody,thebearappearedtohavestarvedanddied.Expertsclaimedthatlowseaicelevelscausedbyclimatechangemeantthebearcouldnothuntsealsasbefore,soithadtotravelgreaterdistancesinordertofindfood.____2____Thenwhatiscausingtheincreaseintheglobalaveragesurfacetemperature?Climatescientistsoftenmentionakeyclimateprocesscalledthe"greenhouseeffect",whichhastwomonmeanings:the"natural"greenhouseeffectandthe"manmade"greenhouseeffect.The"natural"greenhouseeffectreferstothefactthatheatfromthesunenterstheatmosphereandwarmsEarth'ssurfaceasshortwaveradiation.Theheatisreleasedbackintospaceatlongerwavelengths.Greenhousegasesintheatmosphere,suchasmethaneandcarbondioxide,trapsomeoftheheat,keepingEarth'sclimatewarmandhabitable.Withoutthisprocess,Earthcouldnotsustainlife.____3____Whenpeopleproducehugeamountsofextragreenhousegasesbyburningfossilfuels,moreheatenergyistrappedintheatmosphereandcausesEarth'ssurfacetemperaturetorise.____4____Climatescientistshavewarnedthatifwedonottakeappropriateactions,thiswarmingtrendwillprobablycontinueandtherewillbeahigherpricetopay.Infact,newsreportsarefrequentlybroadcastaboutextremerainstormsandheatwavescausingdeathsandeconomiclosses.Continuedgreenhousegasemissionswillresultinfurtherwarmingandlonglastingchangestotheglobalclimate.Thisrequirestheattentionofpeopleallovertheworld.Governmentsneedtoconsidermakingpoliciesandtakingappropriateactionsandmeasurestoreducegreenhousegasemissions.____5____Itisourresponsibilitytoseizeeveryopportunitytoeducateeveryoneaboutglobalwarming,alongwithitscausesandimpacts,becausethisisthemostseriousissueaffectingallofusonthisplanet.Sowhatwillyoudotohelp?Weasindividualscanalsoreduceour"carbonfootprint"byrestrictingtheamountofcarbondioxideourlifestylesproduce.B.ThereislittledoubtthatEarthisgettingwarmerandwarmer.C.Thereisstrongandprehensiveevidencethattheriseintemperaturehasledtoanincreaseinextremeweatherandnaturaldisastersworldwide,notonlycausingseriousdamage,butalsocostinghumanlives.D.However,the"manmade"greenhouseeffecthasnowbeeabigproblem.E.Globalwarmingcontributestothemeltingofglaciersontheearth.F.Largescaleclimatechangehasbeenreportedinrecentyears.G.Thisalarmingcaseshowedhowtheincreaseintemperaturehadanimpactonecology.课上学习任务【Task1】LeadinWhathappenedtotheanimalinthepicture?Why?【Task2】GapfillingandsummarizemainideasChecktheanswersofgapfillingexerciseassignedbeforeclassSummarizethemainideaofeachparagraphPara.1Thee_______ofclimatechangePara.2Thes________ofadeadpolarbearPara.3Thec________ofclimatechangePara.4Thee________ofclimatechangePara.5Thes________toclimatechange【Task3】ReadforstructureWhichisthestructureofthepassage?PP4P1P1A.B.C.D.P1P1P2P4P3P2P1P3P2P2P4P3P2P1P3P2P3PP3P4P2P4P3P4P4P3P4【Task4】ReadforgenreWhattypeofwritingisthispassage?A.Argumentation(议论文）B.Narration（记叙文）C.Exposition(说明文）D.Description(描写文)【Task5】ReadformindmappingCouldyoupleasefinishthefollowingmindmapping?【Task6】ReadformethodsWhatexpositionmethodsdoesthepassageapply?\_________________________._________________________._________________________.【Task7】Readforlanguagefeatures1.(evidential/humorous/objective/subjective)2.(brief/wordy/plain/vivid)3.(clear/unclear/organized/disordered)【Task8】SummarizeandprehendHowtoreadan