教的比较慢，正好可以用，谢谢！

thanks very much

thanks very much

thanks very much

恩~还不错啊!!

不错哦，    准  备上课就用

谢谢楼主的无私奉献！！！！

谢谢你的资源啊！！！

绕口令蛮不错的。

thank you very much