啥呀，你学得太浅，只知道美国高中生AP科得那些内容，还谈不上大学数学，哈哈哈

来源: 用户名被占用了于 2013-01-28 13:52:24 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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