任务四　阅读表达
　　Once an unhappy young man came to an old man because he was very sad. He asked how to be happy. The old man told the unhappy young man to put a small bag of salt into a glass of water and then to drink it.“How does it taste?”the old man asked.“Terrible,”answered the young man.The old man smiled and asked the young man to take another small bag of salt and put it into the river.
　　They walked without any words to the river and the young man put the salt into the river.Then the old man said,“Now drink the water from the river."The young man did so and the old man asked,“How does it taste?"“Nice!"answered the young man.“Can you taste the salt?"asked the old man.“No,"said the young man.
The old man took the young man's hands and said,“The pain(痛苦) of life is the salt.No more, no less.It is always the same, and the only thing you can do is to be a person like a river, not a glass!"
　　阅读短文，按要求回答问题。每小题答案不超过5个词。
1. Why did the young man come to see the old man?
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2. Who told the young man to put a small bag of salt into a glass of water?
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3. Where did they go after the young man tasted the terrible water from the glass?
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4. What is like the salt according to(根据)the old man?
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5. What kind of person should we be?
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