单项选择题

_________ the temperature falling so rapidly, we couldn't go on with the experiment.

A．Since
B．For
C．As
D．With
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单项选择题
Among all the changes resulting from the _________ entry of women into the work force, the trans- formation that has occurred in the women themselves is not the least important.
A．massive
B．quantitative
C．surplus
D．formidable
单项选择题
No one had told Smith about _________ a lecture the following day.
A．there being
B．there be
C．there would be
D．there was
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