单选题：We can infer from the second paragraph that

题目分类：理工类
题目类型：单选题
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题目内容：

We can infer from the second paragraph that A．some people become addicted to drug unintentionally
B．patients are likely to become addicts
C．most drug addicts are those who are in the medical profession
D．people over 30 years old are immune to drug abuse

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答案解析：

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分类：理工类题型：单选题

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分类：理工类题型：单选题

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分类：理工类题型：单选题