什么是计算机网络说出计算机网络连接的对象与连接介质。
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Why isn’t the man going to work
A. The boss wants him to have a rest.
B. He wants to go for a picnic.
C. He is sick and has to stay home.
在Excel 2003图表中，最适合显示百分比的分配情况的图表是______。
Where is the dictionary
A. In Lily’s desk.
B. In Sam’ bag.
C. Nobody keeps it.
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