unit2readingandintegratingskills(mainidea)课件
日期：2010-06-27 06:37
SchemachartManygreatexplorersmadeexpeditionsacrosstheIndianOceanlongbeforeColumbus，amongwhomZhengHewasthemostprominentChinahadcontactswithcountriesalongtheIndianOceanfromtheearlytime，andduringancienttimeexplorershadbeguntocontactwitheachotherBetweentheHanandtheearlyTangDynasty，wrotethebookRecordofMyTravelsIntheeleventhcentury，SwahilikingdomsandtheislandsofftheAfricancoastdevelopedintotheworldtradecentreandattractedmerchantsfromtheworldDuringtheTangDynasty，whotraveledtomanylands，theAfricansmadeseveralvoyagestothecourtoftheSongDynastyBythebeginningofthefifteenthcenturythetimewasripeforagrandmeetingIntheyearsbetween1405and1433，sevenlargetreasurefleetssailedwestwardsonvoyagesoftradeandexplorationZhengHerenewedrelationswiththekingdomsoftheEastAfricancoastThefleetmadeseveralexpeditionsbeforetheexplorationwasstoppedScanningBythemiddleof1920s，underthecommandofZhengHe，DuHuan，MountQomolangmaremainedtobegreatestchallengeforhumanbeingsClimbingM，
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