As the pace of life continues to increase, we are getting more and more stressed and we are fast losing the art of relaxation. Once you are in the habit of rushing through life, being on the go from morning till night, it is hard to slow down. But learning to live with a certain amount of stress is of great significance while relaxation is completely necessary for a healthy mind and body.
Stress is a natural part of everyday life and there is no way to avoid it. In fact, it is not the bad thing as it is often supposed to be. A certain amount of stress is vital to provide motivation and give purpose to life. It is only when the stress gets out of control that it can lead to poor performance and ill health.
The amount of stress a person can withstand（经受住）depends very much on the individual. Some people are not afraid of stress, and such characters are obviously prime material for managerial. Others lose heart at the first signs of unusual difficulties. When exposed to stress, in whatever form, we react both chemically and physically. In fact, we make a choice between “fight ” and “flight” and in more primitive days, the choice made the difference between life and death. The crises（危机）we meet today are unlikely to be so extreme, but however little the stress, it involves the same response. It is when such a reaction lasts long, through continued exposure to stress, that health becomes endangered. Such serious conditions as high blood pressure and heart disease have formed links with stress.
Since we cannot remove stress from our lives (it would be unwise to do so even if we could), we need to find ways to deal with it to keep our mind and body healthy.
83．What does the author mainly want to tell us in this passage?
A．Relaxation is necessary for our health.
B．We should get rid of stress in a proper way.
C．Long lasting stress usually leads to serious diseases.
D．We should learn to live with a certain amount of stress.
84．The underlined sentence in Paragraph 3 probably means that .
A．even a little stress causes us to make a choice between life and death
B．we react both chemically and physically though we are under slight pressure
C．we must answer whether we should remove the stress no matter how small it is
D．the stress is not big but it can lead to serious heart disease or high blood pressure
85．Which of the following shows the organization of the passage?
CP: Central Point P: Point SP: Sub-point（次要点） C: Conclusion