◎ 题干
I smoke out of ____ habit, not for ____ pleasure, and I have had this habit for twenty years.

A. a; the
B. the; a
C. /; the
D. /; /
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“I smoke out of ____ habit, not for ____ pleasure, and I have had this habit for twenty years.[ ]A. a; the B. the; aC. /; theD. /; /…”主要考查了你对  【零冠词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。