赞题库-背景图
单项选择题

Running can strengthen your heart and muscles, but conversely, it can also damage your knees and the bones in your feet.

A.跑步能收缩你的心脏和肌肉,但是很显然,也会锻炼膝盖和脚骨。
B.跑步能锻炼你的心脏和肌肉,但是反过来说,也能锻炼膝盖和脚骨。
C.跑步能强健心脏和肌肉,但是反过来说,也会损害膝盖和脚骨。