◎ 题干
As a heavy smoker , he finds it hard to get rid of the habit, which has a bad _____on his health.
A.affectB.effectC.effortD.affection
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“As a heavy smoker , he finds it hard to get rid of the habit, which has a bad _____on his health.A.affectB.effectC.effortD.affection…”主要考查了你对  【可数名词及其单复数】【集合名词】【名词】  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。