wHo提出的健康的定义是：“健康不仅是没有疾病和病痛，而且是个体在身体上和社会活动上、精神上完全保持健全的状态。”
参考答案：对
We’ll have a sports meet for the next three days.________, we won’t have lessons for three days.[ ]
A. In other words
B. On the other hand
C. For one thing
D. As a matter of fact
（）是以绕单轴或双轴旋转方式全天跟踪太阳运动的集热器。
