阅读理解 The fitness movement that began in the late 1960s and early 1970s centered around aerobic exercise. Millions of individuals became engaged in a variety of aerobic activities, and literally thousands of health spas developed around the country to capitalize on this emerging interest in fitness, particularly aerobic dancing for females. A number of fitness spas existed prior to this aerobic fitness movement, even a national chain with spas in most major cities. However, their focus was not on aerobics, but rather on weight-training programs designed to develop muscular mass, strength, and endurance in their primarily male enthusiasts. There fitness spas did not seem to benefit financially from the aerobic fitness movement to better health, since medical opinion suggested that weight-training programs offered few, if any, health benefits. In recent years, however, weight training has again become increasingly popular for males and for females. Many current programs focus not only on developing muscular strength and endurance but on aerobic fitness as well. Historically, most physical-fitness test usually included measures of muscular strength and endurance, not for health-related reasons, but primarily because such fitness components have been related to performance in athletics. However, in recent years, evidence has shown that training programs designed primarily to improve muscular strength and endurance night also offer some health benefits as well. The American College of Sports Medicine now recommends that weight training be part of a total fitness program for healthy Americans. Increased participation in such training is one of the specific physical activity and fitness objectives of Healthy People 2000:National Health Promotion and Disease Prevention Object.

单选题 The word "spas" (Para. 1) most probably refers to ________.

【正确答案】 B

【答案解析】词汇题。根据第一段第二句“Millions of individuals became engaged in a variety of aerobic activities，and literally thousands of health spas developed around the country to capitalize on this emerging interest in fitness， particularly aerobic dancing for females．”看来，spas前后的意思是：很多人热衷于有氧操，成千上万的spas在全国各地出现，而建造这么多spas的目的是为了从这场健身运动中获利。由此可见，B是正确答案。

单选题 Early fitness spas were intended mainly for ________.

单选题 What was the attitude of doctors towards weight training in health improvement?

单选题 People were given physical fitness tests in order to find out ________.

【正确答案】 A

【答案解析】事实细节题。根据第二段第一句“Historically，most physical-fitness tests have usually included measures of muscular strength and endurance，not for health-related reasons，but primarily because such fitness components have been related to performance in athletics．”可知，A是正确答案。