— I have been worried about the possible danger of driving on a railway line.

— Do not be afraid; God will ________ us.[ ]

A. turn over  

B. watch over

C. go over  

D. look over

计算机中用传送数据，状态和指令采用（）。

A、局部总线

B、地址总线

C、控制总线

D、数据总线