I can't sleep, so I ______ listen to quiet music, and I ______ listen to exciting music.[ ]

A. should, should              

B. shouldn't, shouldn't  

C. should, shouldn't          

D. can, don't

关于持续性枕后位错误的是（）

A.肛查感到盆腔前部较空虚

B.胎头俯屈不良是主要原因

C.子宫收缩乏力影响胎头俯屈和内旋转

D.容易在宫口未开全前使用腹压

E.多见于男型骨盆