单项选择题

Talk to anyone in the drug industry,______ you'll soon discover that the science of genetics is the biggest firing to hit drug research since penicillin was discovered.

A．or
B．and
C．for
D．so
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单项选择题
He spoke so______ that even his opponents were won over by his arguments.
A．bluntly
B．convincingly
C．emphatically
D．determinedly
单项选择题
The foreign student advisor recommended that she______ more English before enrolling at the university.
A．studied
B．study
C．would study
D．was studying
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