下列哪项不是乡镇工业劳动卫生服务的内容()
A.制订生产发展规划
B.从业人员健康监护
C.劳动卫生监督
D.宣传教育、培训
E.生产环境监测
参考答案:A
简述群体规范是如何形成并发挥作用?
Jane got sick last January and ____ in bed ever since. [ ]
A. was
B. had been
C. has been
D. would be