lesson63课件
日期：2010-02-23 02:14
Revision:1Howmuchsaltdotheoceanscontainperthousandpartsofwater?2Whatiscoral?Whyarecora-lsnotfoundindeepwater?3WhyistheDeadSeacalledtheDeadSea?Questions:1WhycanlivingthingsliveinsuchcoldoceansaroundtheAntarctica?2Wheredoesthesquidlive?3Whatisthelengthofthespermwhaleingeneral?4Howmuchdoesawhaleeatatatime?5Doallthewhalesfeedonsm-allfish?6Howdeepcanaspermwhaledive?7Howdoesaspermwhalefindfoodatthebottomoftheoceanwhereitiscompletelydark?Lesson631providesthforsb/providesbwithsthTheyprovidethesufferswithfoodandclothes2atatime=eachtime“每次”atonetime“过去有段时间”AtonetimeIusedtogoswimming3slowvThethicksnowslowedourprogress4—ing形式作方式状语Theycrossedtheriverusingsmallboats，
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