过期妊娠通常合并下列哪些情况（）
A.羊水过多
B.巨大胎儿
C.巨体儿
D.羊水过少
E.胎盘粘连或胎盘植入
参考答案：B, C, D
When he heard that his job application had been rejected, he struggled to _______ his feelings.
A．get rid of
B．get over
C．smooth away
D．push away
简答X射线萤光光谱分析的基本原理。
