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During the past two decades，research has______our knowledge of daydreaming.
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During the past two decades，research has______our knowledge of daydreaming.
A、expanded
B、emerged
C、descended
D、conquered
时间：2021-07-24 01:31
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答案解析
A
解析：在最近的20年间，研究已经拓展了对白日梦的知识。expand：拓宽，拓宽；emerge：显现，浮现；descend：下降；conquer：占领。
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