1 . 听下面一段独白，回答以下小题。
1. What is the main topic discussed in the passage?

A．The development of science and industry in America.

B．The influence (影响) of science and industry on American families.

C．The harmful effect of industrialization.

2. What are described in the passage?

A．Families of the present and of the future.

B．Families of the past and of the future.

C．Families of the past, the present and the future.

3. Who will be in charge of raising children in the future?

A．All families.

B．Social workers.

C．A small number of families.

4. What can we conclude from the passage?

A．Large families can hardly exist in modern society.

B．Children do not like to live with their parents or grandparents.

C．Americans are very careful in choosing their jobs.

2 . 听下面一段独白，回答以下小题。
1. Why did people leave the earth for Mars?

A．The earth was seriously polluted.

B．War made them lose their home.

C．The earth failed to provide enough water.

2. What does the speaker have for breakfast?

A．Pills and juice.

B．Bread and milk.

C．Meat.

3. How does the speaker go to school?

A．By car.

B．By plane.

C．By spaceship.

4. What will the speaker learn from the guides?

A．The languages.

B．The ability of solving problems.

C．How to keep away from the pollution.

3 . 听下面一段较长对话，回答以下小题。
1. When did the man build the first computer?

A．In junior high school.

B．In senior high school.

C．At the university.

2. Where does the man work?

A．In a school.

B．In a company.

C．In a store.

3. How do some people find technology?

A．Interesting.

B．Dangerous.

C．Wonderful.

4. What are the speakers talking about?

A．The making of computers.

B．The past of computers.

C．The future of computers.