第25题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. Buy a ticket. B. Leave at once. C. Get ready immediately. D. Call a taxi. 参考答案:B 答案解析:[听力原文]
W: You’ll have to hurry if you really want to catch the flight. The new airport is quite far
第27题: [单项选择]接受清洁手术者,在术前给予抗菌药物的适宜时间是 A. 0.5/小时~2/小时 B. 2小时一3/小时 C. 2/小时~4/小时 D. 3/小时~6/小时 E. 4/小时~8/小时 参考答案:A 答案解析:[解析] 本题考查抗菌药物的预防性应用。
给药方法:接受清洁手术者,在术前0.5~2小时内给药,或麻醉开始时给药,使手术切口暴露时局部组织中已达到足以杀灭手术过程中入侵切口细菌的药物浓度。