—Did you dare to go out at night when you were a little child?

— No, I didn’t. I don’t have the ______ to go out alone at night even now.

A．courage

B．power

C．ability

D．chance

电化学腐蚀是金属与介质之间由于（）作用而引起的破坏。

A、纯化学

B、电化学

C、物理化学

D、纯物理