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-- What is the function of the mouse?
-- It________ the cursor(光标) on the screen.
A.is used for movingB.is used to moving
C.is using for movingD.used to move
A
考查短语:被用来做某事be used for doing sth,过去常常做某事used to do,J句意:鼠标的作用是什么?它被用来在屏幕上移动光标。故选A
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