13单元阅读Thewaterplanet新教材课件
日期：2010-09-25 09:32
刘艳丽制作Unit13TheWaterplanetTheearthisawaterplanetAbout75%____ofthelivingspaceonearthisintheoceansMarinelifeisincredibly_______________99%rich&variedWhatpercentageoftheearthiscoveredbywater?Thereareaboutfivemillionspecies，rangingfromthetiniestplanktontogiantslikesharksandwhalesHowmanyspeciesarethereintheoceans?_________makestheoceansuchagreatplacetoliveinStructureofthepassagePara1MarinelifechemicalstructurePara2salinityPara3DensityPara4HeatCapacityPara5OceanmotionPara6Howisthetextorganized?Para7TheimportanceofprotectingwaterCarefulreadingTrueorfalse1Thereareaboutfivebillionspeciesintheoceansrangingfromthetiniestplanktontogiantslikesharksandwhales()2Thewatermoleculeismadeoftwohydrogenatomsandoneoxygenatom()FFbillion---millionmadeof---madeupof3Purewaterhasahigherfreezing，
查看全部