At first, the speaker was referring to the problem of pollution in the country,

游客2024-08-24  9

问题 At first, the speaker was referring to the problem of pollution in the country, but halfway in her speech, she suddenly________to another subject.

选项 A、committed
B、favored
C、transmitted
D、switched

答案 D

解析 一开始,演讲者讲的是这个国家的污染问题,但讲到一半,她突然换了一个话题。动词辨析题。commit意为“犯罪;保证”;favor意为“喜欢,青睐”;transmit意为“传送”;switch意为“转变,突变”。根据句意可知,D项为正确答案。
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