妊娠晚期，羊水中不应含有()
A．胎脂
B．胎粪
C．性激素
D．白蛋白
E．毳毛
参考答案：B
The Chinese people were cheering at the most _____ moment when Liu Xiang broke the world record. [ ]
A. excited
B. to excite
C. excite
D. exciting
巷道掘进的主要工序是什么？
