--- What        it be?

--- It         be a man, for it is not moving. It      be a dustbin, I think.

A．can, may, must

B．can, can’t, must

C．can, must, can

D．may, may not, could

宫颈距处女膜缘小于4cm（）

A.子宫脱垂

B. * * 壁囊肿

C.子宫黏膜下肌瘤

D.宫颈息肉

E.宫颈延长