I went to the zoo yesterday. It        me two hours        there by subway.

A．spent, getting

B．took, to get

C．spends, to get

D．takes, to get

DSS开发和实现过程的管理方式将极大地影响实现的成功，下列哪项不属于其应考虑的问题（）

A.高层管理支持

B.用户的义务

C.用户参与管理监督

D.制度化