Some studies confirmed that this kind of eye disease was_____in tropic countries.

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问题 Some studies confirmed that this kind of eye disease was_____in tropic countries.

选项 A、prospective
B、prevalent
C、provocative
D、perpetual

答案B

解析 空格意思是:一些研究证实,在热带国家这种眼疾很普遍。各项的意思是:prospective“预期的”;prevalent“普遍的,流行”;provocative“煽动的,挑衅的”;perpetual“永久的,不断的”。
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