单项选择题

Scientists are ______ certain that there is a cancer-inhibiting agent in the blood of the shark.

A．dubiously
B．virtually
C．queerly
D．randomly
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单项选择题
He is a hypocrite, a liar, a thief—______, he is the greatest devil I ever know.
A．as a consequence
B．as a rule
C．as a matter of fact
D．as a matter of routine
单项选择题
The victims of drunken driving in America over the past decade ______ an incredible 250,000, with three killed every hour of every day on average.
A．take up
B．add up to
C．count for
D．turn out to
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