---Will you please repeat your idea?

---Sure. But I don't think that you ________ attention.

A．paid

B．pay

C．are paying

D．were paying

正常足月分娩时，胎头以哪个径线通过中骨盆：

A．枕下前囟径

B．枕额径

C．枕颏径

D．双顶径

E．双颞径