As the pace（步速） of life continues to increase , we are fast losing the art of relaxation. Once you are in the habit of rushing through lift, being on the go from morning till night, it is hard to slow down. But relaxation is completely necessary for a healthy mind and body.
Stress is an natural part of everyday lift and there is no way to avoid it. In fact , it is not the bad thing 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(忍受) depends very much on the individual. Some people are not afraid of stress, and such characters are obviously prime material for managerial responsibilities. 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 choice between "fight" or "flight" and in more primitive days the choice made the difference between life or 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 established（确定的）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.
According to the writer, the most important character for a good manager is his ________.

A．not fearing stress

B．knowing the art of relaxation

C．high sense of responsibility

D．having control over performance

Which of the following statements is true, according to the passage?

A．We can find some ways to avoid stress

B．Stress is always harmful to people’s health.

C．It is easy to change the habit of keeping oneself busy with work.

D．Different people can withstand different amounts of stress

In the last sentence of the passage, “do so” refers to         .

A．“expose ourselves to stress”

B．“find ways to deal with stress”

C．“remove stress from our lives”

D．“establish links between diseases and stress”

According to the author, the right attitude toward stress is         .

A．to avoid it

B．to try to deal with it

C．to regard it as a vital motivation

D．to find some relaxation