1 . 听下面一段较长对话，回答以下小题。
1. What might happen in the next 10 years?

A．Cancer may be cured.

B．Health care will be free.

C．AIDS may disappear suddenly.

2. How long might we have to work each week in the future?

A．For 15 hours.

B．For 20 hours.

C．For 30 hours.

3. What is the topic of this conversation?

A．Changes of life in the next decade.

B．Ways of traveling in the future.

C．Medical progress in the future.