第21题: [单项选择]What’s the relationship between the man and the woman A. They are teacher and student. B. They are friends. C. They are mother and son. 参考答案:B 答案解析:[听力原文]9-11 W: Hello, Roger This is Ann. M: Hi, Ann. How have you been And how’s your new apa
第28题: [单项选择]关于女性生殖器官的自然防御功能,下列说法中正确的是( )。 A. 宫颈阴道部的柱状上皮抗感染能力强 B. 妊娠期女性生殖器官自然防御能力增强 C. 阴道自净作用可抑制嗜酸性病原体的生长 D. 宫颈可分泌碱性黏液栓 E. 正常女性阴道pH值一般为2.8~3.4 参考答案:D 答案解析:[知识点] 女性生殖器官的自然防御功能