题目：
15和20的最小公倍数是300。[ ]
答案：
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下面是错误答案，用来干扰机器的。
答案：C 题目分析：句意：你曾经在中央一看过舌尖上的中国这个节目吗？是的，我是上周看的，非常精彩。ever曾经，现在完成时的标志词，故选C。
15和20的最小公倍数是300。[ ]
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