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    Dinosaurs were huge animals. They lived ___________ years ago.

    A. hundreds of
    B. thousands of
    C. millions of
    C
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    科目：小学英语 来源：北京模拟题 题型：单选题

    Dinosaurs were huge animals. They lived ___________ years ago.
    [     ]
    A. hundreds of
    B. thousands of
    C. millions of

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