单项选择题

The degree of economic growth is an ______ of the level of living.

A．index
B．advantage
C．access
D．aspect
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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
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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