Questions 22 to 25 are based on the conversation you have just heard.

22. A) The average life span was less than 50 years.

B) It was very common for them to have 12 children.

C) They retired from work much earlier than today.

D) They were quite optimistic about their future.

23. A) Get ready for ecological changes.

B) Adapt to the new environment.

C) Learn to use new technology.

D) Explore ways to stay young.

24. A) When all women go out to work.

B) When family planning is enforced..

C) When a world government is set up.

D) When all people become wealthier.

25. A) Eliminate poverty and injustice.

B) Migrate to other planets.

C) Control the environment.

D) Find inexhaustible resources.

答案：

22. A There average life span was less than 50 years.

23. C Learn to use new technology.

24. D when all people become wealthier.

25. C Control the environment.

原文：

Long conversation one

W: Hi, Professor Smith. I hear you’ve written a book titled Visions.

M: Yes. It explains how science will revolutionize the 21st century.

W: Could I ask you some questions concerning the book?

M: Sure.

W: Are you optimistic about the future?

M: Generally, yeah. If we go back to the year of 1900, most Americans didn’t live beyond the age of 50. Since then, we’ve had improvements in healthcare and technology. There is no reason why these won’t continue far into the 21st century.

W: Are we ready for the changes that will come?

M: Changes are already happening. The future is here now. We have DNA, microchips, the internet. Some people’s reaction is to say, we are too old; we don’t understand new technology. My reaction is to say, we must educate people to use new technology now.

W: Is world population going to be a big problem?

M: Yes, and no. I think that world population will stop increasing as we all get richer. If you are a part of the middle class, you don’t want or need 12 children.

W: Will there be a world government?

M: Very probably. We will have to manage the world and its resources on a global level because countries alone are too small.

W: Will we have control of everything?

M: I think we’ll learn to control the weather, volcanoes and earthquakes. Illness won’t exist. We’ll grow new livers, kidneys, hearts, and lungs like spare parts for a car. People will live to about 130 or 150. For 2000 years, we have tried to understand our environment. Now we’ll begin to control it.

Q22-25 are based on the conversation you just heard.

22. What does Professor Smith say about most Americans around the year of 1900?

23. What does Professor Smith advice we do?

24. When will the world population stop growing according to Professor Smith?

25. What does Professor Smith think human beings will be able to do?