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下面有一个五边形图案,它的外围分布着一至 …
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在下面的每一道题中,你需要根据释义猜出 …
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请你在下面每句话的两个空格中分别填入两个 …
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你知道这些纪念品来自哪个国家吗?想一想, …
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提示一:数学。提示二:空间。提示三:笛卡 …
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