临产的主要标志是
A.规律性宫缩, * * 流血
B.见红
C.规律性宫缩并逐渐加强,伴宫颈口扩张和先露部下降
D.不规则宫缩
E.规律性宫缩,宫颈口扩张
参考答案:C
I do my homework. What _____________ you? [ ]
A. are
B. com
C. about
编组调车