The manager listened to the customers’ complaints attentively with great patience, _______ to miss any point.

A．not trying

B．trying not

C．to try not

D．not to try

粗暴按摩子宫可导致（）

A.胎盘剥离后滞留

B.胎盘嵌顿

C.胎盘粘连

D.软产道裂伤

E.凝血功能障碍