改良是全人类社会需要不断面对的问题。^^

来源: xingfu^ 于 2010-05-02 12:31:08 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.