file:易混发音与连读 .pdf file:听力模拟 .pdf file:场景词汇及四种题型答题技巧 .pdf file:23.2009北大练习讲解(6).mp4 file:10.注意事项.mp4 file:08.主观问答常见问题.mp4 file:07.听、读文章回答问题2.mp4 file:05.自我介绍3.mp4 file:01.常见考试形式.mp4.mp4