A-A+
How long one should take mild exercise a day t
问题详情
How long one should take mild exercise a day to increase one"s life span?
A.Half an hour.
B.One hour.
C.Two hours.
D.45 minutes.
参考答案
正确答案:A
解析:原文中有“They say 30 minutes of mild exercise a day will increase your life span...”一句。