【单选题】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 o...
【单选题】The fitness movement that began in the late 1960s and early 1970s centered around aerobic exercise(有氧操). Millions of individuals became engaged in a variety of aerobic activities, and literally thousa...