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
Husband and wife with a common duty to the country will find themselves ______closer together.
A．been drawn
B．to draw
C．drawn
D．drawing
单项选择题
______ if I had arrived yesterday without letting you know beforehand
A．Would you be surprised
B．Were you surprised
C．Had you been surprised
D．Would you have been surprised
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