第2题: [单项选择]引起婴幼儿急性泪囊炎的主要细菌是() A. 肺炎链球菌 B. β-溶血性链球菌 C. 流感嗜血杆菌 D. 金黄色葡萄球菌 E. 摩-阿双杆菌 参考答案:C 答案解析:该题是基础理论记忆题。急性泪囊炎主要由毒力强的致病菌感染引起,如金黄色葡萄球菌、β-溶血性链球菌。但在新生儿泪囊炎,其致病菌主要是流感嗜血杆菌。答案选C。
第30题: [单项选择]{{B}}Passage One
Questions 26 to 28 are based on the passage you have just heard.{{/B}} A. It was decreasing. B. It was increasing. C. It remained almost unchanged. D. It was going up slowly. 参考答案:A 答案解析:[听力原文]
What do we know about the rate of heart attacks between 1972 and 1974 in the United States
第31题: [单项选择]无排卵型月经,首选促排卵的药物为() A. 人工周期疗法 B. 雌激素 C. 氯米芬 D. GnRHa E. HCG 参考答案:C