1 . 听下面一段较长对话，回答以下小题。
1. What was Prof. Stone’s grandfather afraid of?

A．Leaving his home.

B．Parting from his son.

C．Taking early retirement.

2. What does old age mean to many elderly Americans?

A．Lack of moral support.

B．Loss of self-worth.

C．Change of living habits.

3. What will Prof. Stone talk about next concerning elderly people?

A．Public services they ask for.

B．Health care available to them.

C．Contributions they can make.