—What did he say          his stupid behavior?

—He admitted having made a serious mistake.

A．in explanation of

B．in favor of

C．in case of

D．in fear of

运输集装箱货物的船舶可分为______。

A．全集装箱船

B．半集装箱船

C．可变换集装箱船

D．不可变换集装箱船

E．冷冻集装箱船