2. 医学
  3. If exercise is a bodily maintenance activity and an index of physiological age, the lack of sufficient exercise may either cause

If exercise is a bodily maintenance activity and an index of physiological age, the lack of sufficient exercise may either cause

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问题 If exercise is a bodily maintenance activity and an index of physiological age, the lack of sufficient exercise may either cause or hasten aging.
选项 A、instance
B、indicator
C、appearance
D、option
答案B
解析 句意：如果说锻炼身体是保养身体的活动，是生理年龄的指标，那么缺乏锻炼可能就会加速老化。index指标。indicator指示。option选择。
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