1 . 听下面一段较长对话，回答以下小题。
1. What are the speakers talking about?

A．Buying a mobile phone.

B．Winning a prize.

C．Joining a singing contest.

2. What’s the man’s attitude to his chance of winning?

A．Doubtful.

B．Confident.

C．Indifferent.

3. What is the probable relationship between the speakers?

A．Schoolmates.

B．Colleagues.

C．Roommates.

2 . How many students competed in the race in total?

A．15.

B．25.

C．40.

3 . How many students competed in the race in total?

A．15.

B．25.

C．40.