看來還是老中聰明啊，緊抓數學不放鬆，哈哈。

來源: xiaoxing 於 2014-07-07 08:44:02 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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看來還是老中聰明啊，緊抓數學不放鬆， 哈哈。