单项选择题

Most electronic devices of this kind, ______ manufactured for such purposes, are tightly packed.

A．that are
B．as are
C．which is
D．it is
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单项选择题
Why does a vegetarian restaurant make its dishes resemble meat in every way except ______
A．ingredients
B．elements
C．components
D．compounds
单项选择题
I'd rather you ______ those important documents with you.
A．don't take
B．didn't take
C．won't take
D．not take
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