病理缩复环最多见于下列哪种情况（）。
A.胎儿畸形
B.子宫收缩乏力
C.头盆不称
D.软产道异常
E.臀位
参考答案：C
－Shall we go and have a picnic at the weekend?
—________ It is said there might be snow then.
A．Why not?
B．It sounds great!
C．Well, I can’t agree with you more．
D．That depends．
