2. 外语
  3. Because of the high blood pressure, the doctor advised him to ______ from smoking.

Because of the high blood pressure, the doctor advised him to ______ from smoking.

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问题 Because of the high blood pressure, the doctor advised him to ______ from smoking.
选项 A、constrain
B、restrain
C、refrain
D、remain
答案C
解析 refrain意为“忍住，抑制，戒除”，是不及物动词，后面接宾语时要用介词from。restrain也有“抑制，制止”之意，但它是及物动词，后面直接跟宾语。constrain意为“强迫，迫使”，是及物动词，常用于constrain sb . to do sth．(强迫某人做某事)。remain为不及物动词，意为“保持(某种状态)”。
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