单项选择题

A scientific law is liable at any time to need modifying. This happens when fact is discovered which seems to ______ what the law would lead one to expect.

A．prove
B．support
C．contradict
D．discourage
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单项选择题
The ______ now seems to stand as the primary to a new era of strong economic growth.
A．defect
B．descent
C．deficit
D．defeat
单项选择题
The trouble is that various worldly pressures will make you more, not less, inclined to play it ______.
A．safe
B．safely
C．to safety
D．in safety
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