He raised his gun, pointed it at a bear and _____aim, shot at it.

A．took careful

B．taking careful

C．to take careful

D．taken careful

银行涉假冠字号码查询申请者（）委托第三方代理查询。

A.可以

B.不可以

C.必须经人民银行批准后才可以

D.必须经查询受理单位同意后才可以