unit6warmingup,readingcomprehension课件
日期：2010-06-27 06:27
fourexpeditionssetouttoexplorethelandInthetwodecadesbeforetheCivilWar，theUnitedStatesofAmericawasayoungcountrythathadjustcomeintobeingItconsistedofthestateseastandsouthoftheGreatLakesAnyofthelandtothewestoftheMississippiriverwasunexploredIn1830，000peoplereachedOregon，PresidentThomasJeffersonsentasecretmessagetotheAmericancongress，thousandsofAmericansmovedtothewestAsmanyas250，callingforanexpeditiontothePacificOceanTheUSwantedtoextenditsterritoryoverthewholeofthecontinentInthenextsixtyyears，whileuntoldthousandsmigratedoverlandtosouthernCaliforniabywayofthevarioussouthernroutesAbout43，theytraveledtheroadofhardshiptofindanewhomeandcarveoutanewexistenceNoroadsexisted，000peopletraveledoverlandtonorthernCalifornia，andatleastasimilarnumbersettledinUtahInsearchofland，Unit6WARMINGUPOregonTheGreatTrekWestwardsTheytraveledtheroadofhardshipTheGreatTrekwestwardshadbeenturnedintomanydifferentmovies(DanceswithWolves)In1800，andtherewerenovillagesonthewayThetripwasdangerousandvery，
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