阅读短文，回答问题。
It’s no fun being in the hospital. Children who have to be in hospital often feel bored or lonely, and this would make them feel even sicker. Now some hospitals in the USA have computers connected to the Net and let sick children talk to other sick children in other hospitals on the computer anytime they want.
So far the system links （连接） eleven hospitals, each with about twenty computers that can be moved from room to room. Sick children can get in touch with patients like themselves for on-line talks or games.
Doctors agree that the system is more than a play thing. It helps sick children feel better, and that may help them get better.
With the computer children don’t feel so alone while they are in the hospital. They can get on-line and meet sick children who have the same health problems, share their medical battle stories, or anything.
One of the things that the system is trying to do is to link outside the hospital network so that children can talk with friends and family. Another is to link one hundred hospitals by the end of this year.
1．Why does a sick child feel bored or lonely?
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2．What do sick children do after the computers are connected to the Net?
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3．How many hospitals does the system link now?
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4．Is it possible that sick children in different hospitals may become friends?
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5．How many things is the system trying to do by the end of this year?
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