《德语速成》mp3
http://cdhk.tongji.edu.cn/student/upfiles/2005/1_1a.mp3
http://cdhk.tongji.edu.cn/student/upfiles/2005/1_1b.mp3
http://cdhk.tongji.edu.cn/student/upfiles/2005/1_2a.mp3
http://cdhk.tongji.edu.cn/student/upfiles/2005/1_2b.mp3
