lesson46课件
日期：2010-12-02 12:38
Unit12MainlyrevisionLesson46Theuniverseandman-madesatellitesLookatpicturesWhatisasatellite?WatchVideoPre-readingWhatisasatellite?Whatisasatellite?AsatellitegoesaroundtheearthThemoonisasatelliteoftheearthTherearemanyman-madesatellitesinspaceMan-madesatelliteshavebeensentupintospacebymanycountriesWhatcanasatellitedo?TheycanhelpustolearnmoreabouttheearthhelpustostudytheuniversesendandreceivemessageshelpustolearnmoreabouttheweatherandotherthingshelpustomaketelephonecallstoaforeigncountrysendandreceiveTVorradioprogrammesWatchVideoWhile-readingWhatdowemeanwhenwetalkabouttheuniverse?Whycan’tmanystarsbeseen?Howfaristhemoonawayfromtheearth?Hasthemoonbeenvisitedbymanalready?Haveanyman-mademachinestravelledfartherthanthemoon?Whatarethey?Whatdoyouknowabouttheuniverse?Whydowesaytheworlditselfisbecomingsmallerandsmaller?THEUNIVERSEANDMAN-MADESATELLITESTheuniverseandman-madesatell，
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