单项选择题

Some studies confirmed that this kind of eye disease was ______ in tropical countries.

A．prospective
B．prevalent
C．provocative
D．perpetual
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单项选择题
The problems requiring immediate solution will be given ______ at the meeting.
A．priority
B．urgency
C．superiority
D．emergency
单项选择题
A terrible traffic accident happened; people were saddened as they watched the ______ sight on TV.
A．panic
B．patriotic
C．pathetic
D．periodic
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