Our surroundings are being polluted faster than nature and man’s present efforts cannot prevent it. Time is bringing us more people, and more people will bring us more industry, more cars, larger cities, and the growing use of man-made materials.
What can explain and solve this problem? The fact is that pollution is caused by man—by his desire for a modern way of life. We make “increasing industrialization” our chief aim. So we are often ready to offer everything: clean air, pure water, good food, our health and the future of our children. There is a constant flow of people from the countryside into the cities, eager for the benefits of our modern society. But as our technological achievements have grown in the last twenty years, pollution has become a serious problem.
Isn’t it time we stopped to ask ourselves where we are going—and why? It makes one think of the story about the airline pilot who told his passengers over the loudspeaker, “I’ve some good news and some bad news. The good news is that we’re making rapid progress at 530 miles per hour. The bad news is that we’re lost and don’t know where we’re going.” The sad fact is that this becomes a true story when spoken of our modern society.
Man cannot prevent the world from being polluted mainly because______.

A．the population of the world is decreasing fast

B．people use too many man-made materials

C．we have more and more industry

D．we are producing more cars, trucks and buses

According to the passage, what does man value most?

A．Industry.	B．Health.
C．Clean air.	D．The future of the children.

The story about the airline pilot tells us that ______.

A．man knows where the society is going

B．people do not welcome the rapid development of modern society

C．man can do little about the problem of pollution

D．the writer is worried about the future of our society

People crowd into the cities because ______.

A．they want very much to find well-paid jobs

B．they are anxious to enjoy the achievements of our society

C．they have become tired of their homeland

D．they have a strong wish to become industrial workers