第6题: [单项选择]What is the author's main point A. Every family has its happiness and unhappiness. B. Her family has suffered a lot. C. Her ex-husband is not a good man. D. Every family has its strength and can create its happiness. 参考答案:D 答案解析:作者最后一段说,每个人都有机会,力量存在于想冲破自身局限的愿望之中,单亲家庭也不一定就要成为社会学家的研究统计的对象。
第20题: [单项选择]联合应用抗生素,错误的是() A. 联合以多为好 B. 能提高抗菌效果 C. 可降低药物剂量 D. 能防止或延迟药物出现耐药性 E. 联合用药应避免敢用不敢停的弊病 参考答案:A 答案解析:一般情况下,抗生素可单用不联合;可用窄谱不用广谱。还应考虑药源充足、价格低廉有效。故答案应选A。