高二英语课件高二英语下学期Unit13integratingskills高二英语课件

IntegratingskillsChemicalStructure1H2O=2H+OThewatermoleculeismadeupoftwoHydrogenatomsandoneOxygenatom.Thewaythewatermoleculeisformedgiveswateruniqueproperties.TheChemicalStructureofwatermakesitdifferentfromalmosteverythingelseonearth.Howmuchdoyouknowaboutthem?Istheeconomytherewell-developedornot?Whichcityisthemostdeveloped?Why?Canyoutellwhatmapitis?Whereisit?Isthewaterheresaltyorfresh?What’stheplacewhereriverandtheoceanmeet?RiverOceanEstuaryEstuaryAnestuaryisthebodyofwaterwherearivermeetstheocean.Thismixingcreatesauniqueenvironment.Freshwaterandsaltwatermixedtogether.Homeofthousandsofanimalsandplants.Manycitiesandtownsarebuiltnearby.Nature’snursery:EstuariesFindthedefinitionofanestuaryAnestuaryisthebodyofwaterwherearivermeetstheocean.Saltwaterfromtheoceanandfreshwaterfromtherivermixtogetherinanestuary.Thismixingoffreshandsaltwatercreatesauniqueenvironmentfilledwithlifeofallkinds－azonebetweenthelandandsea.Nature’snurserynursery:placewhereyoungchildrenarecared,usuallywhiletheirparentsareatworkEstuariesaregreatplacesfornature’syoungones.Estuariesarethenurseryforlifeintheoceansandrivers.Activity1FindingTopicSentencesTopicSentenceofParagraph_____Astheoceansarethesourceoflifeonearth,theestuariesareourplanet'snurseries.TopicSentenceofParagraph_____Estuariesaregreatplacesfornature'syoungones.TopicSentenceofParagraph_____Estuariesarealsoimportantbecausetheyabsorbnutrientsandpollutantsfromwatercomingfrominlandsources,thuscleaningourwater.TopicSentenceofParagraph_____Estuariesprovidebothrecreationandeducationforhumanbeings.3241Activity2.Structureofthepassage124312431234√Greatplacesfornature’syounganimals.Cleanourwaterbyabsorbingnutrientsandpollutantsfromwatercomingfrominlandsources;Providebothrecreationandeducationforhumanbeings.Whatkindsoffunctionofestuarieshavebeenmentionedinthepassage?RecreationEducation1.Whyareestuariessuchgoodplacesfornature’syoungones?Inestuaries,animalscanenjoyallthebenefitsoftheoceanswithouthavingtofacemanyofitsdangers.Tidesprovideenergyfortheecosystems,butestuariesareprotectedfromwavesandstormsbyislands,mudorsand.Nutrientsfromboththelandandtheoceanarriveinestuaries.Activity3Readthepassageandanswerthefollowingquestions.4.Whyareestuariesmoresensitivetopollutionthanotherareas?Becauseestuariesactasfilters(过滤器),manypollutantsendupinthem.2.Whatdoesdensitymeaninthispassage?Itmeansthenumberofspeciesperarea.3.Howdoyouthinkestuariesaffectthewaterthatpassesthroughthem?Theyabsorbnutrientsandpollutantsfromwatercominginlandsources,thuscleaningourwater.5.Whyareestuariesimportanttohumanbeings?①Estuariesprovidebothrecreationandeducationforhumanbeings.Peoplecanfish,swimandhavefunonthebeach.Scientistsandstudentshaveendlessopportunitiestostudyavarietyoflifeinthehabitat.②Estuariesalsocontributetotheeconomythroughtourismandfishing.Whydotheyoungonesliketocomeandlivehere?Whichofthefollowingisnottrue?A.Theycangetnutrientsbothfromthelandandtheocean.B.Becausetheclimatehereiswarmer.C.Becauseestuariesareprotectedbyislands,mudandsand.D.Tidesprovideenergyfortheecosystem.Estuariesarebodiesofwateralongcoaststhatare________(形成)whenfreshwaterfromriversflowsintoand________withsaltwaterfromtheocean.Inestuaries,thefreshriverwaterisblockedfromstreamingintotheopenoceanbyeithersurroundingmainland,orislands.Thismixingoffreshandsaltwater_______auniqueenvironment______withlifeofallkinds—azonebetweenthelandandseaknownasanestuary.Finishthefollowingpassagewithwordsfromthetext.formedmixescreatesfilledTheestuarygathersandholdsa________oflife－givingnutrientsfromthelandandfromtheocean,forminganecosystemthatcontainsmorecreaturesthananyother________ontheearth.Estuariesarealsoimportantforhumanbeings.Theyprotectwaterqualityby________pollutantsfromwatercomingfrominlandsources.Theyarecentersfor________________(娱乐)andeducation.Estuaries,inshort,aretreasures.varietyhabitatabsorbingrecreationThankyou!