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问题 单项选择题

选择连续的多个文件或文件夹时，先单击要选择的第一个目标，再按住( )单击要选择的最后一个目标。

A．Ctrl键

B．Alt键

C．Shift键

D．Space键

答案

参考答案：C

解析： 选择连续的多个文件或文件夹时，先单击要选择的第一个目标，再按住Shift键单击要选择的最后一个目标。

选择题

Is she _____________ the study? [ ]

A. on

B. to

C. in
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选择题

Mr. Irving, who ____ in a high school for forty years, is now living in retirement. [ ]

A. has taught

B. taught

C. had taught

D. has been teaching

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