2. 外语
  3. An exercise program designed for younger adults may be inappropriate for older persons, particularly for persons over age 50. Sp

An exercise program designed for younger adults may be inappropriate for older persons, particularly for persons over age 50. Sp

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问题     An exercise program designed for younger adults may be inappropriate for older persons, particularly for persons over age 50. Special attention must be paid to matching the program to the interests and abilities of the participants. The goals of the program should include both social interaction and physical conditioning.
    Older adults should take a physical examination before starting a fitness program. Included in this examination should be a stress cardiogram (心电图) , blood pressure check, and an evaluation of joint functioning. It is a good idea for participants  to learn how to monitor their own cardiorespiratory (心肺的) status during exercise.
    Well- designed fitness programs for older adults will have activities that begin slowly, are monitored frequently, and are geared to the enjoyment of the participants. The professional staff coordinating the program should be familiar with the signs of distress. Periods of warm- up and cool- down should be included. Activities to increase flexibility are beneficial in the beginning and ending parts of the program. Participants should wear comfortable clothing, appropriate shoes, and be mentally prepared to enjoy the activities to the fullest.
    A program designed for older adults will largely conform to the criteria of activity, intensity, duration, and frequency. The principal exception is in the intensity camp where the THR (Target Heart Rate) should not exceed 120 beats per minute.  This level of intensity is approximately 40% to 50% of the maximum heart rate. Also, because of possible joint or muscular or skeletal problems, certain activities may have to be done in a sitting position. Pain and discomfort should be reported immediately to the fitness instructor.
   Fortunately, properly screened adults will rarely have health emergencies during a well -monitored fitness program. Like their youthful counterparts, many older adults find fitness programs socially enjoyable, physically beneficial, and occasionally addictive.
According to the author,______.
选项 A、older adults need more physical exercises than the younger ones
B、younger adults are not necessary to take a physical examination before a fitness program
C、fitness programs for older adults should be well -monitored
D、poorly - designed fitness programs for older adults will do serious harms to them
答案C
解析 通过文章第二段可以看出，老年人在参加健身项目以前应进行体检，而在运动中，还要监测他们的心肺机能状态。而A，B，D选项的内容则未在文中提及。
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