A. They are very nice and comfortable. B. There are not enough trains. C. They often run behind schedule. D. They leave and arrive at the right time. 参考答案:D 答案解析:根据第五段They(the Japanese trains)always leave and arrive on time可知正确答案为D。
第32题: [单项选择]对于抗生素的选择,下列哪一个是正确的 A. 头孢他啶 B. 他唑巴坦 C. 两性霉素B D. 庆大霉素 E. 青霉素 参考答案:C 答案解析:[解题思路] 1.大剂量长期应用广谱抗生素最易招致真菌感染,该患者临床症状也符合真菌性脓毒症。
2.血液真菌检查及培养是诊断真菌性脓毒症的最可靠依据。
3.滥用广谱抗生素必然导致菌群失调,必须立即