During the past two decades, research has ________ our knowledge of daydreaming.【单选题】

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During the past two decades, research has ________ our knowledge of daydreaming.

A. expanded

B. emerged

C. descended

D. conquered

参考答案:

A

A 扩大 B 浮现、露出 C 下降 D 征服

英语考试