Question

It's reported that over 300 million people in China are suffering from near-sightedness. As more children have got eye trouble, their parents hope to cure　 48 　disease by medicine or equipment or by correcting the way children read and sit. 　 49 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 50　 follows:

Firstly, don't fasten your shoes too tightly. Try wearing loose shoes　 51　 walking bare-footed at home. When traveling, try wearing cloth shoes to make blood circulation (循环) easier.

　 52　 , 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　 53　 one's eyesight. When skipping the rope, one has to react quickly, 　 54 　 excites the brain and the eyes. 　 55　 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.

Answer 1

48. the    49. But    50. as   51 or   52. Secondly    53. to   54. which   55. Besides