A man lives in a big house. He likes his house, but he hates(讨厌)the mice in it. One day, he buys a big cat from the market(市场) to eat the mice. After a few days, the cat kills(杀)many mice. This time, the mice become very worried. They decide to do something to save their lives, so all the mice come together to discuss(讨论)it. They have many plans, but none of them is good and useful.

    At last, a young mouse stands up and says: “I'll show you what we can do. We can put a bell around the cat's neck. Then if the cat comes we can run away, because we can hear the bell ring.” All the mice agree and say it's a good idea. Then an old mouse stands up and asks, “The point(重点)is which of us will tie(系)the bell to the cat's neck?” No one says anything because no one dares(敢)to do it.