下列情况会对人体健康造成较大危害的是（）

题干

A：米粉作坊将米粉挂在房间中并在房内燃烧硫黄熏制

B：食堂制作馒头用适量小苏打发酵面团

C：少量氯气通入自来水消毒杀菌

D：用食醋清洗温水瓶胆中的水垢

上一题下一题 0.0难度选择题更新时间:2018-04-13 08:01:26

A

B

Happy Middle School

We're a bilingual(双语的) school for children of 6～15.We want a cook，a library assistant, a sports coach and a language teacher.

Jobs	Ages	Languages	Skills(技能)	Others
cook	25～40	Chinese	can cook Chinese and Western food	healthy
library assistant	20～35	Chinese， English	can read different kinds of books	careful
sports coach	20～40	Chinese, English	major in(主修) P．E.	healthy and strong
language teacher	—	Chinese, English	major in English	—