题目内容:
WhichofthefollowingstatementsiStrue?
A.TheErieCanalconnectedLakeErieandtheHudsonRive B.Economistsarefortheopinionthatplaceswherefarmingisdonearegoodformakingrawmaterialsintofinishedgood
C.WagonsdrawnbyhorsesoroxenSoonprovedbetterandcheaperthancanaltransportatio
D.ThecomingoftherailroadscausedNewYorktobecomelessimportantasashippingcente
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答案解析: