第18题: [单项选择]关于羊水的描述,以下不正确的是() A. 胎儿中枢神经系统畸形常合并羊水过多 B. 胎儿消化系统畸形常合并羊水过少 C. 妊娠早期羊水主要来自母体血清经胎膜进入羊膜腔的透析液 D. 妊娠中期起羊水来自胎儿尿液 E. 羊水最大深度≤3cm,羊水指数≤5cm诊断为羊水过少 参考答案:B 答案解析:胎儿消化系统畸形常合并羊水过多。
第26题: [单项选择] {$mediaurl}What is the topic of the discussion A. Ideas behind forms of historical research. B. History of successful expansion of world empires. C. Connections between culture and transportation. D. Ancient systems of laws and social control. 参考答案:C 答案解析:[听力原文] 12-17 P What we’re going to do today is really at the heart of history. We’re going to loo