Which of the following sentences is not true according to the author？
A. The author wants to tell us that pollution is a serious problem caused by man.
B. We can stop this trend of pollution merely by our own efforts.
C. Many scientists show their worry about the world pollution.
D. The pollution of the earth will threaten the human being"s survival.
查看答案
Who caused this problem according to the passage？
A. The motor cycles.
B. The growing industries.
C. The human beings.
D. The larger cities.
If people want to reduce stress and depression, what attitude should they take according to some doctors？
A. They should take kind of positive attitude.
B. They should take the attitude of wait-and-see.
C. They should take the negative attitude.
D. They should follow their fate.
Which of the following is not mentioned by the author as one of many causes of stress in the passage？
A. The boredom and frustration brought by unemployment.
B. The poorness of living space and housing shortage.
C. The stress and depression produced by sleeplessness.
D. The worry about financial and economic situation.
What will happen to a person if he suffers from long-term stress and depression？
A. He will lose his present job.
B. He will become bored with his life.
C. He will become sleepless and anxious.
D. He will commit suicide.
微信支付 
支付宝支付