—Could you tell me _________ last night?

—Er, I was watching TV at home.[ ]

A. what you were doing

B. what were you doing

C. what you are doing

D. what are you doing

关于前置胎盘的处理，下述哪项是错误的

A．期待疗法为止血及补充血容量
B．中央性前置胎盘，不论宫口开大与否，均禁忌行人工破膜
C．依孕周、前置类型、出血多少、有无休克，决定是否用期待疗法
D．根据胎次、胎位、胎儿是否存活，综合分析决定处理
E．B超根据胎盘与宫口位置，确诊前置胎盘类型