B)下面你将听到十组对话，每组对话都有一个问题。根据对话内容，从每组所给的A、B、C三个选项中找出能回答所提问题的最佳选项。每组对话读两遍。
5. How long has the man worked at Beijing International School?
A. For three years. B. Since 2006. C. Since 2007.
6. What sort of music does Daming like?
A. Pop. B. Rock. C. Techno.
7. What are they doing?
A. They are singing. B. They are listening to music.
C. They are talking about a song.
