2. 外语
  3. At first, the speaker was referring to the problem of pollution in the country but halfway in her speech, she suddenly ______ to

At first, the speaker was referring to the problem of pollution in the country but halfway in her speech, she suddenly ______ to

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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、switched
D、transmitted
答案C
解析 题意是：起初，演讲者提到该国的污染问题，但是在其演讲中途，她突然到另一个话题。[C]switched“转换，改变(话题，思路等)”，符合题意。[A] committed“犯(罪)，委托”，[B]favored“赞成，赞助”，[D]transmitted“传送，传达”都不符合题意。
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大学英语四级

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