2. 外语
  3. _____ otherwise directed by a doctor, this medicine should be taken three times a day.

_____ otherwise directed by a doctor, this medicine should be taken three times a day.

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问题 _____ otherwise directed by a doctor, this medicine should be taken three times a day.
选项 A、Even if
B、Unless
C、Except that
D、As
答案B
解析 语法类试题(副词、形容词的使用)。otherwise，副词，意为：“另外”、“别的样的”、“(在)其他方面”，如：He is noisy，but otherwise a niceboy．他爱吵闹，但在其他方面倒是一个好孩子。evenif表示“即使”，如：Even if you had the book，you could not find the secret。except that表示“除了……”，而且要引导一个完整的从句。而按题意，应选unless。
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