下学期Unit13integratingskills高二英语课件
日期：2010-07-14 07:33
IntegratingskillsChemicalStructure1H2O=2H+OThewatermoleculeismadeupoftwoHydrogenatomsandoneOxygenatomThewaythewatermoleculeisformedgiveswateruniquepropertiesTheChemicalStructureofwatermakesitdifferentfromalmosteverythingelseonearthHowmuchdoyouknowaboutthem?Istheeconomytherewell-developedornot?Whichcityisthemostdeveloped?Why?Canyoutellwhatmapitis?Whereisit?Isthewaterheresaltyorfresh?What’stheplacewhereriverandtheoceanmeet?RiverOceanEstuaryEstuaryAnestuaryisthebodyofwaterwherearivermeetstheoceanThismixingcreatesauniqueenvironmentFreshwaterandsaltwatermixedtogetherHomeofthousandsofanimalsandplantsManycitiesandtownsarebuiltnearbyNature’snursery:EstuariesFindthedefinitionofanestuaryAnestuaryisthebodyofwaterwherearivermeetstheoceanSaltwaterfromtheoceanandfreshwaterfromtherivermixtogetherinanestuaryThismixingoffreshandsaltwatercreatesauniqueenvironmentfilledwithlifeofallkinds－azonebetweenthelandandseaNature’snurserynursery:placewhereyoungchildren，
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