Jimmy is a good boy, He __________ his father. They are both clever and kind.

A．takes after

B．looks after

C．looks similar

D．looks the same

办公自动化是一门综合技术，除计算机技术、通信技术和系统科学以外，主要还有( )。

A．管理科学

B．决策科学

C．行为科学

D．信息科学