II.完形填空。从A、B、C、D四个选项中，选出一个正确答案，并填在答题纸相应的位置上。（本大题共15小题，每小题1分，共15分）

　　As the pace of life continues to increase, 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. 16 being on the go is essential for a healthy mind and body.

　　Stress is a natural part of everyday life and there is no 17 to avoid it. In fact, it is not the bad thing as it is often 18 to be. A certain amount of stress is vital to provide motivation and give purpose to life. It is only 19 the stress gets out of 20 that it can lead to poor performance and ill health.

　　The amount of stress a person 21 withstand depends very much on the individual. Some people are not 22 stress, and such strong characters are obviously prime material for managerial responsibilities. Others 23 at the first sight of unusual difficulties. When24 to stress, in whatever form, we react both chemically and physically. 25 we make choice between “flight or fight” and 26 more primitive days the choices might make the difference between life and death. The crises we meet today are 27 to be so extreme, but however little the stress, it involves the same response. It is when such a reaction lasts long, 28 continued exposure to stress, that health becomes 29 . Such serious conditions as high blood pressure and heart diseases have 30 links with stress. Since we cannot remove stress from our lives, we need to find ways to deal with it.

　　16.A. And B. But

　　C. Or D. Therefore

　　17.A. plan B. choice

　　C. way D. idea

　　18.A. supposed B. found

　　C. meant D. planned

　　19.A. then B. that

　　C. when D. where

　　20.A. order B. mind

　　C. limitation D. control

　　21.A. should B. will

　　C. can D. must

　　22.A. concerned about B. interested in

　　C. happy with D. afraid of

　　23.A. lose heart B. get excited

　　C. gain confidence D. stay calm

　　24.A. faced B. brought

　　C. exposed D. connected

　　25.A. In reality B. In nature

　　C. On the contrary D. On one hand

　　26.A. in B. during

　　C. among D. on

　　27.A. unusually B. unlikely

　　C. ordinarily D. normally

　　28.A. in B. under

　　C. by D. about

　　29.A. dangerous B. risky

　　C. unsafe D. endangered

　　30.A. established B. blocked

　　C. offered D. destroyed