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童话故事:风中奇缘22(终)
Thomas Henry Rolfe. Virginia New World Virginia ColonyThis was a tragic event. Many people mourned her. They remembered the courageous Indian princess. Young Thomas was educated in Britain by h...
贷款危机袭击投资银行
VOA 慢速 初级 金融危机Congress passed a banking act in niniteen thirty-three known as the Glass-Steagall Act. It banned commercial banks from buying and selling securities, their job was to pay ...
短文:统计学简介
统计学Statistics There were two widely divergent influences on the early development of statistical methods. Statistics had a mother who was dedicated to keeping orderly records of govern...
背诵美文——化石
A Rare Fossil RecordThe preservation of embryos and juveniles is a rate occurrence in the fossil record. The tiny, delicate skeletons are usually scattered by scavengers or destroye