The fitness movement that began in the late 1960s and early 1970s centered around aerobic exercise. Millions of individuals beca

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问题     The fitness movement that began in the late 1960s and early 1970s centered around aerobic exercise. Millions of individuals became【C1】______in a variety of aerobic activities, and【C2】______thousands of health spas【C3】______around the country to capitalize on his【C4】______interest in fitness, particularly aerobic dancing for females. A number of fitness spas existed【C5】______to this aerobic fitness movement, even a national chain with spas in most major cities. However, their【C6】______was not on aerobics,【C7】______on weight-training programs designed to develop muscular mass,【C8】______, and endu rance in their primarily male【C9】______. These fitness spas did not seem to benefit【C10】______from the aerobic fitness movement to better health, since medical opinion suggested that weight-training programs【C11】______few, if【C12】______, health benefits. In recent years, however, weight training has again become increasingly【C13】______for males and for females. Many【C14】______programs focus not only on developing muscular strength and endurance but on aerobic fitness as well.【C15】______, most physical-fitness tests have usually included measures of muscular strength and endurance, not for health-related reasons, but primarily【C16】______such fitness components have been related to【C17】______in athletics.【C18】______, in recent years, evidence has shown that training programs designed primarily to improve muscular strength and endurance might also offer some health【C19】______as well. The American College of Sports Medicine now【C20】______that weight training be part of a total fitness program for healthy Americans.
【C15】

选项 A、practically
B、Eventually
C、Essentially
D、Historically

答案D

解析 “历史地;过去地”。根据全文的时间性以及本段的上下文,下文提到“in recentyears”,根据时间上的对比,上文讲的应陔足健康运动的“historically过去”。而选项,A项“实际上”,B项“最后;终于;结果”,C项“实质上;本质上”均不与“in recentyears”形成对比,不符合题意。
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