单项选择题

There being no cause for alarm, you ______ in such a panic yesterday.

A．need not act
B．did not need to act
C．need not have acted
D．did not need to have acted
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单项选择题
The electronic games would not have ______ without being ingeniously programmed.
A．taken to
B．caught on
C．fitted in
D．set about
单项选择题
Catholicism is an integral and ______ influence on Irish national life and culture.
A．persistent
B．persuasive
C．pervasive
D．perceptive
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