题目内容：
阅读文章，回答题：It is reported that over300 million people in China are suffering from nearsightedness(近视).
As more children have got eye trouble, their parents hope to curethe disease by medicine, equipment or by correcting the way children read andsit. But in fact the care given to one' s eyes should start with the exerciseon one' s feet. Three methods on how to protect eyes are as follows:
Firstly, don't fasten yourshoes too tightly. Try wearing loose socks or walking barefooted at
home. When traveling, try wearing cloth shoes so as to make bloodcirculation(循环) easier.
Secondly, walking ontiptoes will help improve one' s eyesight, and prevent nearsightedness. Figuresshow that few ballet (芭蕾舞) performers are nearsighted.,
Thirdly, rope skippingalso does good to one "s eyesight. When skipping the rope, one has to reactquickly, which excites the brain as well as the eyes. It will also help makeone grow taller.
Besides foot exercises, itis good to pull one' s ears. Pulling the ears 20 times is found to be an effectiveway to reduce the pressure on one' s eyes soon.
To cure nearsightedness,people don' t usually A．depend on medicine
B．use equipment
C．think of foot exercises
D．pay attention to correcting theway children read and-sit
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