lol 对得很！ tip：在可控范围内使自己的利润最大化就是答案（当然，也有买六合彩中巨奖等等答案不在考虑之列）

来源: backchina888 于 2012-06-24 15:09:16 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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