高二英语Unit16TheSea旧课件
日期：2010-10-27 10:31
Unit16ThePacificOceanTheArcticOceanAsiaNorthAmericaAfricaEuropeSouthAmericaAntarcticOceania(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)Talkaboutthepicture:Whatdoestheearthlooklike?Why?1Howsaltyisthewaterintheocean?A35%B11%C25%√2Whereisthesaltiestlakeintheworld?TheGreatSaltLake3Whereisthelongestcoralbedintheworld?4Howdoesseawaterstayclean?ItliesoffthenortheastcoastofAustraliaSeaweedsproducevariouschemicalsthatkeepseawatercleanTheearthlooksbluefromthespacebecauseitissofaraway(F)(F)(F)(T)2Onlyafewpeoplehaveseenmuchoftheearth’ssolidsurfacebefore3Altogetherthereareelevenmineralsthatmakeupthesaltwateroftheocean4Chemicalsproducedbyseaweedshelpkeeptheseawaterclean(T)(F)(F)(T)5ThesurfacewateroftheMediterraneaninsummercanreachupto25°C6Accordingtothepassage，ifthesealosesalotofwatertotheair，theremightbe76partsofsaltperthousandofwater7Coralbedscanbe，
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