The United

　　States Baseball players __10__ backwards when their team is losing

　　Ⅱ.简答题

　　The Internet is a huge network of computers located all over the world that communicate with each other.

　　The Internet is an international collection of computer networks that all understand a standard system of addresses and commands，connected together.It was started in 1969，when the U．S.Department of Defense established a nationwide network to connect many universities.The original idea was to increase computing ability that could be shared by users in different locations and to find out what it would take for computer networks to survive a nuclear war or other disasters by providing multiple paths between users.People quickly discovered that they could exchange messages and hold electronic conferences with people far away.If somebody had something interesting on his computer，it was very easy to obtain a copy of it.Over the years，more networks joined.The first international connections，to Norway and England，were added in 1973.Today thousands of networks and millions of computers are connected to the Internet.It is growing so quickly that nobody can say exactly how many users are on the Net.

　　However，Internet use appears to cause a decline in people’s mental health，according to research at Carnegie Mellon University.

　　Even people who spent just a few hours a week on the Internet experienced more depression and loneliness than those who logged on less frequently，the two-year study showed.And it wasn’t that people who were already feeling bad spent more time on the Internet，but that using the Net actually appeared to cause the bad feelings.

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