笼中有30只鸡和兔，数一数正好有100只脚．鸡有只，兔有只．

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更新 2022-09-03
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笼中有30只鸡和兔，数一数正好有100只脚．鸡有　　只，兔有　　只．

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Peter： Excuse me． sir？ Could you tell me the wav to the nearest bank？

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