三、阅读短文,根据短文内容,完成下列各题。
Long ago, there was a rich man. To make his son live a happy life, he sent him to see a wise old man for advice on happiness. When the old man knew about this, he gave the boy a bowl(碗) and asked him to go to the river and fill it with water. “If no water is spilt(洒) when you come back, I’ll tell you about it.”
Soon the boy walked back with a full bowl of water. The old man asked him, “Did you notice the beautiful flowers and the singing of birds along the road?” The boy could say nothing because he paid much attention(注意) to the bowl in his hands.
The old man smiled, “Bring me another bowl of water and enjoy the flowers and the singing of birds.”
When he came back, the boy could describe(描述) everything he saw to the old man. But when he looked at his bowl, he found most of the water was gone. He forgot(忘记) all about his bowl.
The old man said, “Well, enjoy the beauty of the world, but never forget your goal. This is the secret(秘密) of happiness.”
21. Why did the rich man send his son to see a wise old man for advice?

22. What did the old man ask the boy to do?

23. How many times did the old man ask the boy to get water?

24. What is the secret of happiness in your mind? (within 15 words)

21.To make his son live a happy life./Because he wanted to make his son live a happy life.
22.He asked the boy to go to the river and fill a bowl with water.
23.Twice.
24.We should enjoy the beauty of the world, but never forget our goal.