第24题: [单项选择]According to the first paragraph, in what sense do AIDS or drugs corrupt American life A. They are a mental threat. B. They lead to addiction. C. They violate immune system. D. None of the above. 参考答案:C 答案解析:[解析] 事实细节题。文章第一段第二句话可以解释为“艾滋病破坏基因免疫力,麻醉品上瘾危害神经系统的免疫力”(AIDS destroys genetic immunity:drug addiction