When asked why he went there, he said he was sent there _____for a space flight.

A．training

B．being trained

C．to have trained

D．to be trained

初产妇，39周妊娠，规律宫缩2小时入院，估计胎儿3500g，查宫底剑下1指，左枕前位，胎心好，宫缩强，胎头跨耻征可疑阳性。

下一步的处理措施为（）

A.产妇的髋关节屈曲

B.静滴缩宫素加强宫缩

C.产妇取蹲位分娩

D.剖宫产分娩

E.产钳助产

F.手转胎头至枕前位