题目

 Excuse me . Could you tell me _______  ?  A. is there a hotel near here         B. there is a hotel near here        C. how can I get to the nearest hotel    D. how I can get to the nearest hotel        答案：D胎儿通过脐带与胎盘相连，胎盘的主要作用是（ ）A．胎儿连接母体的器官 B．胎儿与母体进行物质交换的器官C．胎儿的器官 D．母体的器官