They considered ______ a computer, which was considered ________ a great help in their work.

A．to buy; to be

B．buying; being

C．to buy; being

D．buying; to be

治安管理处罚，是指司法机关对违反治安管理，尚不够刑事处罚的行为人依法剥夺其人身自由、财产或其他权利的行政处罚。( )