我国允许使用的食用漂白剂不包括（）。
A.吊白块
B.二氧化硫
C.亚硫酸钠
D.低亚硫酸钠
E.硫磺
参考答案：A
整复直肠脱时清洗患部可用（）
A.70%酒精
B.5%碘酊
C.1%明矾溶液
D.0.1%苯扎溴铵
E.1%高锰酸钾
- -- What do you think of your parents?
--- They are always strict ____ our studies and they often make me ______ too much homework .
A．with , to do
B．in , to do
C．about , do
D．at , do
