题干
A survey of the opinions of scientists _____ that three hours of outdoor exercise a week
_____ good for our health.
_____ good for our health.
A：show; are
B：shows; i
C：show; i
D：shows; are
答案(点此获取答案解析）
B
的人生，才是有价值的人生 ②个人生存、发展的条件都是由社会提供的
