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
Of all the senses that help a small baby to distinguish his mother, there is the sound of her voice, his sense of smell, his sight, the ______ way she handles him, sight is predominant.
A.distinctive
B.intensive
C.intuitive
D.gracious
单项选择题
According to a major U.S. newspaper, President Bush will ______ a mission to the country W investigate the cause of the sudden disappearance of the two diplomats.
A.assign
B.dispatch
C.undertake
D.execute
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