学习初期很容易掌握。过了5年级，就没什么戏了。

来源: 知名度比较高于 2012-05-16 18:40:18 [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.