单项选择题

______ that they may eventually reduce the amount of labor needed on construction sites.

A．So clever are the construction robots
B．So clever the construction robots are
C．Such construction robots are clever
D．Such clever construction robots are
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单项选择题
They are faced with the same kinds of challenges and problems after graduation ______ we are.
A．as if
B．even if
C．as
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—I'm sorry for keeping you waiting. —Never mind. I ______ here only a few minutes.
A．came
B．have come
C．was
D．have been
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