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【单选题】
若将网页上的背景图片下载下来，正确的操作方法是（）。A.
单击图片→“图片另存为”
B.
右击图片→“背景另存为”
C.
右击图片→“复制背景”
D.
右击图片→“设置为背景”
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反馈参考答案：
举一反三
【单选题】—I have worked hard at math, but it seems that I haven’t made any progress. —Keep on _____ at it, and you will be successful.
A.
work
B.
working
C.
to work
【单选题】It seems that I have seen this man somewhere before, but now I can’t remember I came across him.
A.
where was it that
B.
where it was that
C.
that it was where
D.
that was it where
【单选题】---Dead slow ahead! ---Reply: _________. ---Report: Engine dead slow ahead
A.
No problem
B.
OK
C.
Dead slow ahead
D.
Yes
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