成人子宫输卵管造影所显示的子宫腔容量平均为（）。
A.2ml左右
B.4ml左右
C.6ml左右
D.8ml左右
E.10ml左右
参考答案：C
根据下列句子的意思及所给的汉语提示，写出空缺处单词、固定短语或固定搭配的正确
形式。
1. I'll show my collection of ______ (邮票) to the class.
2. We practiced ______ (唱) English songs for one and a half hours today.
3. Which country is ______ (大) in population, the US or Canada?
4. Xu Li, with his friends, ______ (拾起) waste paper in the park every Sunday.
5. Do you know this table ______ (由……制成) bamboo?
具有活血行气，祛风止痛功效，能上行头目、下入血海的药物是
A．川芎
B．牛膝
C．桃仁
D．益母草
E．红花
