题目内容

13．I have no idea ________ is better，so I took _______ of them．（　　）
A．what，bothB．what，noneC．which，bothD．which，all

分析 我不知道哪个更好，所以我两个都买了．

解答 答案：C，根据better比较级可知是两个事物进行比较，不知选哪一个，因此引导同位语从句使用which"哪一个"，第二个空表示两者使用代词both，all用于三者及以上，故答案为C．

点评 考查不定代词，应对句子成分进行分析，根据句子语境判断正确答案．

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