单项选择题

There is a real possibility that these animals could be frightened, ______ a sudden loud noise.

A. being there
B. should there be
C. there was
D. there have been
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单项选择题
Anyone who has spent time with children is aware of the difference in the way boys and girls respond to ______ situations.
A. similar
B. alike
C. same
D. likely
单项选择题
High grades are supposed to ______ academic ability, but his actual performance did not confirm this.
A. certify
B. clarify
C. classify
D. notify
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