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    trees are cut down in the forests every year. A. ThousandB. ThousandsC. Thousand ofD. Thousands of 答案: D. (选择C的同学注意词组记忆的准确性) 【查看更多】

     

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    _____ trees are cut down in the forests every year.
    [     ]
    A. Thousand
    B. Thousands
    C. Thousand of
    D. Thousands of

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    ______ trees are cut down in the forests every year.
    A．ThousandB．Thousands
    C．Thousands ofD．Thousand of

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