All of my teachers but the math teacher ______ he cheated in the exam.

A．doubt that

B．doubts that

C．doubt whether

D．doubts whether

胎盘娩出前断续大量 * * 出血，暗红色，有血块（）

A.胎盘剥离不全

B.子宫胎盘卒中

C.凝血功能障碍

D.宫缩乏力

E.软产道损伤