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    Left alone on that small island, he seemed to have to learn to survive . A.from a teacher B.through trial and error C.without any effort D.by scientific experiments 【查看更多】

     

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    Left alone on that small island, he seemed to have to learn to survive _____.

    A. from a teacher                      B. through trial and error 

    C. without any effort           D. by scientific experiments

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