键盘上,单独使用时不起作用的键是(  )。

键盘上,单独使用时不起作用的键是(  )。A.Num Lock B.Shift C.Caps Lock D.Backspace

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A are causedB caused  C are to causeD have been causing

A are causedB caused  C are to causeD have been causing

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Which of the following can be best inferred from the passage

Which of the following can be best inferred from the passage? __________A.The im

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根据以上短文和选项,回答题Paragraph 2__________

根据以上短文和选项,回答题Paragraph 2__________

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使用“剪切”、“复制”和“粘贴”命令只能在同一个文档中进行选定对象的移动和复制。(  )

使用“剪切”、“复制”和“粘贴”命令只能在同一个文档中进行选定对象的移动和复制。(  )

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