题目内容：

完形填空。

We often see boxers(拳击手) skipping on TV. Is skipping very important for them? Skipping is a tiring exercise. It's also a great sport for our _______ You can jump alone or with your classmates. You can also turn a _______ rope for others to jump over, one at a time. _______ you jump alone, you still need a right rope and it should be just long enough for your _______. Try ropes of _______ lengths until you find a right one for our height.

How do you turn a rope? It should be slowly. After all, we are not boxers. It must also be turned _______ enough. Turning the rope freely and safely _______ careful timing. In rope jumping, timing means turning the rope slowly enough for you to jump over at the right time _______ striking your feet.

While skipping, your heart beats _______ and your face has a healthy color. But if you skip too many times at first, you will get _______. You must learn when to stop for a rest before you jump again. If you are practicing, you can increase the number of times you skip without resting.

1.A．police         B．officers         C．children         D．teachers

2.A．strong         B．colorful         C．short            D．long

3.A．But            B．If               C．Though           D．Because

4.A．partner        B．school           C．game             D．height

5.A．same           B．different        C．difficult        D．long

6.A．far            B．near             C．high             D．short

7.A．hates          B．needs            C．protects         D．offers

8.A．with           B．without          C．for              D．on

9.A．faster         B．slower           C．worse            D．better

10.A．excited       B．sleepy           C．hungry           D．tired