单项选择题

We Americans do a lot of business______ lunch, but people here prefer to tell stories.

A．in
B．over
C．within
D．without
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单项选择题
She met with no challenge because her arguments______ sound facts.
A．put forward
B．rested on
C．made for
D．conjured up
单项选择题
The theory was attacked ten years ago when it was first______, but gradually it was accepted.
A．promoted
B．enhanced
C．advanced
D．conceived
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