题目内容

-- 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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