【单选题】

Sports do us good in many respects. It goes without saying that taking exercises can build up our physical strength. Sports can build our bodies, prevent us from getting too fat, and keep us healthy. They also give us valuable practice in helping the eyes, brain and muscles to work together.

In collective sports like basketball, volleyball, or football, we will learn the importance of cooperation. While taking part in sports game, we will try our best to win and arouse ourselves the competitive spirit. Sports can also help us relax after a period of exhausting work.
However, as the saying goes, "There are two sides to everything", and sports is without exception. We may hurt other players or ourselves if we are not careful enough when participating (参与) in sports activities. What’s more, excessive (过度) training can do harm to our health.
Careful exercises can even do harm to our health.
A、Right
B、Wrong C、Doesn’t Say