题目内容：

It's reported that over 300 million people in China are suffering from near-sightedness（近视）. As more children have got eye trouble, their parents hope to cure   1.   disease by medicine or equipment or by correcting the way children read and sit.   2.   in fact the care given to one's eyes should start with the exercise on one's feet. Three methods on how to protect are   3.  follows:

Firstly, don't fasten your shoes too tightly. Try wearing loose shoes   4.   walking bare-footed at home. When traveling, try wearing cloth shoes to make blood circulation (循环) easier.

5.   , walking on tiptoes(脚尖) will help improve one's eyesight and prevent near-sightedness.  Figures show that few ballet performers are near-sighted.

Thirdly, rope skipping also does good  6.   one's eyesight. When skipping the rope, one has to react quickly,   7.    excites the brain and the eyes.    8.   foot exercises, it's good to pull one's ears. Pulling the ears 20 times is found to be an effective way to reduce the pressure on one's eyes.