第7题: [单项选择]糖皮质激素用于治疗严重感染的机制是 A. 中和病原体产生的外毒素 B. 发挥抗炎、抗免疫、抗毒、抗休克作用,使病人渡过危险期 C. 增强机体的免疫力 D. 提高中枢兴奋性 E. 抑制、杀灭病原体 参考答案:B 答案解析:[解题思路] 糖皮质激素只能提高机体对内毒素的耐受力,无中和内毒素及外毒素的作用,更没有抑制、杀灭细菌的作用。
第25题: [单项选择]Which of the following sentences expresses a fact A. Mary and her son must be home by now. B. Careless reading must give poor results. C. It’s getting late, and I must leave now. D. He must be working late at the office. 参考答案:C