A．Because he has less homework． B．Because he needn't go to school． C．Because he has fewer lessons．

14．What is the man most interested in?

A．Playing the piano． B．Playing the violin． C．Listening to music．

15．What do you know about the two speakers?

A．They both lack the theory of music． B．They often go to concerts together． C．They both like playing the piano．

16．Whom will they ask for advice?

A．The woman's teacher． B．Their professor． C．The man's uncle． 听第 10 段材料，回答第 17 至 20 题。

17．Which floor was damaged?

A．The third floor． B．The second floor． C．The first floor．

18．When was it built?

A．In 1718． B．In 1782． C．In the 1930's．