上学期unit2reading高三英语课件
日期：2010-06-15 06:30
Unit2CrossingLimits WorldmapexplorationHowmanycontinentsarethereintheworld?Whataretheirnames?OceaniaAntarctica1TalkaboutexplorationSpace/polar/desert/voyageexploration2NewwordsNavigator3LookatthepicturesandtalkaboutthepeopleZhengHe，andthentraveledfurthersouth，sevenlargetreasurefleetssailedwestwardsonvoyagesoftradeandexplorationUnderthecommandofZhengHe，discoveringtheeasterncoastofAfricaJamesCook(1728-1779)wasthegreatestBritainnavigatorIn1768hewassenttothePacificOnhisfamoussecondexpedition(1772-75)heexploredAntarcticaIn1776heundertookhisthirdandfinalvoyageinwhichheexploredtheWestcoastofNorthAmericaandtriedtolocateapassagebetweentheAtlanticandPacificoceansOnthisvoyagehediscoveredtheHawaiianIslands，intheyearbetween1405and1433，thefleetssetsailfromtheSouthChinaSeaacrosstheIndianOceantotheRedSea，andsailedupthecoastofNorthAmericathroughtheBeringStraitstotheArcticOceanOnhisreturnhewaskilledbyHawaiianislandersJAMESCOOKItalian-bornexplorerChristopherColumbusbr，
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