unit13 integrating skills[下学期] 人教版高二英语Unit13 The w-豆柴文库

unit13 integrating skills[下学期] 人教版高二英语Unit13 The w.ppt

2024-12-02

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1Thewatermoleculeismadeupoftwoh___________atomsandoneo________atom. 2Waterisaliquidatroomtemperature,butitturnsintoas________whenthetemperaturedropsbelow0℃andintoagaswhenheatedabove100℃. 3Thesoilcana__________water,soithelpstokeepwaterfromflowingaway. 4Marinescientistsstudyther_____________betweenlivingcreaturesandtheirhabitatintheocean. 5Lifeintheoceansappearsindifferentsizes,r__________fromthetiniestfishallthewayuptothebiggestbluewhales. 6Oilhasadensitylowerthan1,000kg/m3,soitwillf_____onwater.4.Anicecubecanfloatonwater.Ithassomethingtodowithwater’s. salinityB.densityC.heatcapacity 5.Thecoastalareasareoftenneithertoohotnortoocold.It’sbecauseofwater’s. A.salinityB.densityC.highheatcapacitySkimmingGreatplacesfornature’syounganimals. Cleanourwaterbyabsorbingnutrientsandpollutantsfromwatercomingfrominlandsources; Providebothrecreationand educationforhumanbeings.Activity1.FindingTopicSentencesActivity2.StructureofthepassageReading:Questions (1)Whyareestuariessuchgoodplacesfornature’syoungone? (2)Whatdoesdensitymeaninthispassage? (3)Howdoestuariesaffectthewaterthatpassesthroughthem? (4)Whyareestuariesmoresensitivetopollutionthanotherareas? (5)Whyareestuariesimportanttohumanbeings?1.Whyareestuariessuchgoodplacesfornature’syoungones? Inestuaries,animalscanenjoyallthebenefitsoftheoceanswithouthavingtofacemanyofitsdangers. Tidesprovideenergyfortheecosystems,butestuariesareprotectedfromwavesandstormsbyislands,mudorsand. Nutrientsfromboththelandandtheoceanarriveinestuaries.4.Whyareestuariesmoresensitivetopollutionthanotherareas? Becauseestuariesactasfilters(过滤器),manypollutantsendupinthem.5.Whyareestuariesimportanttohumanbeings? Estuariesprovidebothrecreationandeducationforhumanbeings. Peoplecanfish,swimandhavefunonthebeach. Scientistsandstudentshaveendlessopportunitiestostudyavarietyoflifeinthehabitat. Estuariesalsocontributetotheeconomythroughtourismandfishing.1.Bymentioning“nutrientsarriveinestuariesfromboththelandandtheocean”(Para.2)theauthormeans______. A.estuaries

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