先兆临产的症状有 ()
A.假阵缩
B.规律宫缩
C.见红
D.进行性宫口开大
E.胎儿下降感
参考答案:A, C, E
I’ll never forget the day ______ I was born.
A.in which
B.that
C.on that
D.when
重组能产生______中没有的新的类型。