Exercise
Whether or not exercise adds__1__the length of life, it is common experience that a certain__2__of regular exercise improves the health and contributes a feeling of well-being. Furthermore, exerise__3__involves play and recreation, and relieves nervous tension and mental fatigue in so doing, is not only pleasant but beneficial.
How much and what kind of exercise one should__4__merits careful consideration.The growing child and the normal young man and young woman thrill with the exhilaration of strenuous sports. They fatigue to the__5__of exhaustion but recover promptly with a period of rest. But not so with__6__of middle age and beyond. For them moderation is __7__vital importance. Just how much exercise a person of a given age can safely take is question__8__to answer. Individual variability is__9__great to permit of generalization. A game of tennis may be perfectly safe for one person of forty but folly for another. The sage limit for exercise__10__on the condition of the heart, the condition of the muscles, the type of exercise, and the regularity with which it is taken. Two general suggestions, however, will__11__ as sound advice for anyone. The first is that the condition of the heart and general health should be__12__periodically by careful, thorough physical examinations. The __13__is that exercise should be kept below the point of physical exhaustion.
What type of exercise one should__14__depens upon ones physical condition. Young people can safely enjoy vigorous competitive sports, but most older persons do better to limit themselves to less strenuous activities. Walking, swimming, skating are among the sports that one can enjoy and safely participate__15__throughout life. Regularity is important if one is to get the most enjoyment and benefit out of exercise.
1.A for B to C at D of
2.A heaviness B highness C amount D number
3. A which B where C when D why
4. A carry B make C bring D take
5. A point B place C left D reverse
6. A these B this C those D that
7. A against B below C on D of
8. A easy B hard C impossible D unnecessary
9. A very B too C constantly D considerably
10. A depends B bases C acts D carries
11. A refer B regard C serve D treat
12. A delayed B defended C designed D determined
13. A other B another C one D same
14. A endure B choose C rebuild D produce
15. A with B from C in D on
答案：B C A D A C D B B A C D A B C