中年女性，中下腹横切面如图，箭头所示为()
A．子宫钙化环
B．宫内节育器
C．子宫肌瘤
D．孕囊
E．子宫肌瘤钙化
参考答案：B
_____ days went by, he didn't succeed in anything he had planned. [ ]
A. With
B. When
C. As
D. While
以下属于等渗溶液的有()。
A．5%葡萄糖溶液
B．10%葡萄糖溶液
C．5%碳酸氢钠溶液
D．1.4%碳酸氢钠溶液
E．1.87%碳酸氢钠溶液
g he had planned. [ ]