The would-be taxi drivers have to        a very tough training period to get their licenses.   [ ]

A. go through

B. get through

C. pass through

D. put through

属于安全作业禁止行为（）。

A、禁止井筒作业不系安全带造成伤人事故

B、禁止井筒作业中不设监护人

C、禁止盲日作业不顾及周围环境是错误安全