Can you think of some cases______drivers obviously knew the traffic rules but didn’t obey them?

A．why

B．where

C．as

D．which

作业检讨的基本原则有（）

A.作业结果的检查与记录

B.整理整顿清扫

C.作业步骤的检讨

D.作业计划的比较

E.设备工具的确认保养