题目内容：

听下面一段较长对话，回答以下小题。

1. What are the two speakers' nationalities?

A. British and Chinese.    B. Chinese and French.

C. Chinese and American.

2. What problem was a newspaper article about?

A. The problem of rapid growth of cars in cities in America.

B. The problem of rapid growth of cities in America.

C. The problem of rapid growth of skyscrapers.

3. Do Americans carry out a birth control policy?

A. Yes, they do.    B. No, they don't.    C. We can't know.

4. What attitudes do most Americans take towards having children?

A. Most Americans decide not to have any children.

B. Most Americans decide to have as many children as they can.

C. Most Americans decide to have only one or two children.