以下物质极性最小的是（）
A.苯甲酯
B.苯
C.苯酚
D.苯甲酸
E.苯甲醚
参考答案：B
宫腔镜治疗的适应证包括（）
A.黏膜下小肌瘤
B.子宫内膜息肉
C.子宫纵隔
D.宫腔黏连分离
E.子宫颈息肉
根据句意及首字母(汉语)的提示，补全单词。
l. Catherine stayed i_____ because it was raining.
2. Peter k ___ the glass off the table and broke it.
3. I bought a_____(篮子)of apples yesterday.
4. This had made it necessary for agriculture and industry to d __ very quickly.
5. You have to file away for hours to get this ___ (金属)smooth.
