-- What is the function of the mouse?
-- It________ the cursor(光標) on the screen.
A.is used for movingB.is used to moving
C.is using for movingD.used to move
A
考查短語:被用來做某事be used for doing sth,過去常常做某事used to do,J句意:鼠標的作用是什么?它被用來在屏幕上移動光標。故選A
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