四川省广安市岳池县第一中学高中英语外研版4导学案 Module 4 Great Scientists 第2课时

学必求其心得，业必贵于专精学必求其心得，业必贵于专精学必求其心得，业必贵于专精Period2:Reading学习目标：1。了解中国长江三峡的情况2。利用单元词汇描绘名胜古迹3。培养快速阅读的能力学习重点：了解中国长江三峡的情况学习难点：良好阅读习惯和阅读能力的培养课前预习使用说明与学法指导：1.了解背景知识加深对文章的理解2。15分钟之内完成教材助读：TheThreeGorgesregionisascenicareaalongtheYangtzeRiverinChinawithatotallengthofabout200km。TheThreeGorgestakesup120kmwithinthisregion。Althoughitisprimarilyfamousforitsscenery，theThreeGorgesregionishistoricallyandculturallyanimportantregioninChina。TheThreeGorgesregionislocatedalongtheYangtzeRiverbetweenthecitiesofFengjieandYichanginChongqingMunicipalityandHubeiCurrentlytheThreeGorgesregionismostfamousfortheThreeGorgesDam.TheThreeGorgesDamisunderconstructionataplacecalledSandouping（三斗坪）inthemiddleoftheXilingGorge.Inadditiontotheimpacts(影响)ofthedamontheecologyandpeople（i。e.themassrelocationoftownsandvillages）oftheregion，thedamwillalsochangethesceneryoftheThreeGorges。Becausethewaterlevelwillbehigher,thegorgeswillbenarrowerandthemountainswillappearlower。Supportersofthedampointoutthatbecausethemountainsreachseveralthousandfeetabovetheriver，thegorgesarestilllikelytoofferfascinatingviewsofthesurroundingcliffs,anditshouldbenotedthatmostriverboatcompaniesthatoperateintheThreeGorgesintendtocontinuetooffertoursoftheregion:TheincreaseinwidthoftheThreeGorgeswillalsoallowlargershipsthroughthegorgesanditispredictedthatrivertrafficofallkindswillincrease.预习自测：课文原句背诵1．Hethoughtthatpeoplewastohavemorericeandtoproduceitmorequickly。他认为，养活世人的关键是拥有更多的水稻并且能更快地生产出来。2．Thetubeswereattachedtoalongstickwhichhelpedinastraightdirection。箭管被绑在一根长棍子上,这根棍子能使火箭沿直线飞行。3．Orwashecarriedmilesintospace，theworld’sfirstastronaut?还是被带到了太空，成为了世界上第一位宇航员呢?我的疑问：__________________________________________________________________________________________________________________________________________课内探究质疑探究：语篇理解阅读P42的ReadingandVocabulary部分,从每题所给的3个选项中选出最佳答案1．Thewriterwrotethispassageinorderto.A．tellabouthisexperienceasateacherinChinaB．tellabouthisfirstvisittotheThreeGorgesC．tellabouthisfirstrideonaboatalongtheYangtzeRiver2．WhydidtheircolleaguessuggesttheynotgoontheJiangyouboat?A．BecausetheticketsfortheJiangyouboatareexpensive。B．Becausetheyareonlyforgoods。C．Becausetheyarecrowdedandmainlyforgoodsandpeopletradingalongtheriver。3．“BuildtheThreeGorges，ExploittheYangtzeRiver！"Whichofthefollowingwordscantaketheplaceoftheunderlinedwordinthesentence？A．Explore. B．Build。C．Takeadvantageof。4．WhichofthefollowingstatementsisTRUEaccordingtothepassage？A．OnabeautifulafternoontheypassedthroughtheWuGorge.B．Theytooktheboatupstream。C．TherearelotsofhistoricalplacesofinterestalongtheYangtzeRiver.5．Thispassageisorganisedbymeansof。A．timeandeventsB．descriptionsC．opinionsandexamples课文缩写用所给单词或短语的正确形式完成课文缩写detour；geton；dock;character；construction;deck；exploit；narrow；distant；downstreamWedecidedtobuyticketsfortheJiangyouboat。Wejusthadtoshowourpassportsandtheyletus1。theboat。Weleftthe2.onabeautifulafternoon.Thesunwasshiningbrightlyaswesailed3。throughahillyregion.WesleptthroughtheQutangGorge，which4。to350feetastheriverrushesthroughthee。highmountains。AtWushanwemadea5.uptheDaningRiver。AswecameoutoftheXilingGorge，wesailedintothe6。siteofthedam。Allthepassengerscameon7。,tookpicturesandpointedatthesite,butweweren'tallowedtogetofftheboat.Ona8。mountainwasasignin20。foot9.。“BuildtheThreeGorgesDam，10。theYangtzeRiver，”itsaid.当堂检测:短语填空attheedgeof;atleast；beheavywith；inthedistance；besurroundedby1．Thegreatactorhisusualcrowdofhangers。on.2．Everyautumn，theappletreesbehindmyhouseapples。3．Icanhearthesoundofthecheering.4．Therearethreethingswecandotokeephealthyeveryday。Doyouknowwhattheyare？5．Listen!Thebirdsaresingingwoods。课后反思：__________________________________________________________________________________________________________________________________________课后训练Around200millionyearsago，theearthwas18degreeswarmerthanitisnow。Thatmightbeabithotforhumans,butitwasjustrightforthegiantdinosaursthatwanderedabouttheearthduringtheMesozoic(中生代的）era.Anewstudyfoundthatplant.eatingdinosaursmayhavecontributedtothewarmingoftheearthbyreleasingsignificantamountsofmethane（甲烷)．Thestudy，publishedinsciencejournalCurrentBiology,focusedonsauropods，long­neckedherbivores（食草动物）thatmunched(用力咀嚼）onthetopoftrees。Theywerethelargestofthedinosaurs；foodbrokedownintheirstomachsforlongperiodsoftime。Theresearchersestimatethatasauropodareleased2，675litersofmethaneperday—addinguptoalargeamountofthegreenhousegasbeingpumpedfromdinosaur’sgutintotheatmosphere。Planteatersnaturallyreleasemethaneaspartoftheirdigestiveprocess。Thelargertheanimal,themoremethaneitproduces。Methane，agreenhousegas，trapsheatandremainsintheatmosphereforapproximately9-15years,whichwarmstheatmosphere。Today，someanimals，suchascattle，goatsandsheep,producelargeamountsofmethaneasaducttotheirfooddigestion。Methaneisalsoreleasedfromhuman-influencedsourcessuchaslandfill，agriculturalactivities,coalminingandotherindustrialpractices—whichallcontributetotoday’sclimatechange，accordingtotheEnvironmentalProtectionAgency。Theresearchersestimatethatearth'ssauropodswouldhaveproducedabout520milliontonsofmethaneperyear－similartothetotalamountofmethaneproducedtodaybynaturalandman。madesources。However，theresearcherswarnthattheirnumbersareestimatesbasedonmultipleassumptionsaboutthedigestivesystemsandpopulationsofdinosaurs。TheauthorofthestudyDavidWilkinsonsaystheemissionofmethanefromdinosaurswouldhavebeenjustoneofthecausesofwarmclimateduringtheMesozoicera.Othercausesincludegasesproducedfromvolcanoes,swamps，shallowseasandsoon.Still，Wilkinsonsays,“Theamountofmethanefromdinosaursislargeenoughtohaveameasurableeffect.”1。Scientiststhinkdinosaursmayhav