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
The newly-elected president is determined to ______ the established policy of developing agriculture.
A．go for
B．go on
C．go by
D．go up
单项选择题
I'm very sorry to have ______ you with so many questions on such an occasion.
A．interfered
B．offended
C．impressed
D．bothered
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