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    精英家教网 > 高中英语 > 题目详情
    ---- An ant has two stomachs --- one for itself and the other for others.
    ----Really? Quite interesting. I ________ anything about it.
    A．don’t knowB．hadn’t knownC．haven’t knownD．didn’t know
    D
    考查时态。“蚂蚁有两个胃，一个自己用一个为别的蚂蚁。”“真的么？我不知道。”在对话时不知道，所以用一般过去时态。
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