第22题: [单项选择]治疗支原体肺炎首选的抗生素是 A. 链霉素 B. 丁胺卡那霉素 C. 青霉素 D. 头孢噻肟 E. 红霉素 参考答案:E 答案解析:[解题思路] ①青霉素对A组溶血性链球菌所致的扁桃体炎、猩红热、肺炎球菌肺炎敏感。②头孢菌素类药物抗菌谱广,抗菌活哇强,特别是对产酶耐药菌感染的疗效好。③丁胺卡那霉素是氨基糖苷类抗生素。④红霉素是大环
第30题: [单项选择]Questions 11 to 18 are based on the conversation you have just heard. A. He felt sick when he saw the alteration. B. He thinks the woman is being mean. C. He expected his suit to be ready. D. He backed up into another car. 参考答案:C 答案解析:[听力原文] M:What do you mean,my suit isn’t ready yet! I dropped it off for alteration more than thre