题目内容：

    Hula hoops (呼啦圈) were a very popular toy for kids in the past. Millions of people still remember playing with the brightly colored rings, trying to swivel (旋转) their bodies to make the hula hoop move. People can't stop swiveling their bodies until the hula hoop falls. This is not only great fun, but also great exercise. It is very interesting to see how long people can keep the hoop going.

Nowadays, many students are more and more interested in the activity. Some kids are good at playing it. This old-fashioned (过时的) toy is popular again.

There are many fat children around the world now. 解决这个问题的最好方式是让他们每天锻炼， and hula hoop does this very well.

Kids usually spend a lot of time on their study. A hula hoop is also good exercise for kids. They can continue this exercise and improve their health. 事实上，锻炼和学习一样重要。

The newest hula hoops are quite different from the old ones. The colors are more attractive and the material of the toy is better. All children will be very happy if they get such a gift.

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