Only after Li Qi focused on his strengths instead of his weakness ___________ himself from his inferiority complex（自卑感）.

A．he freed

B．he had freed

C．did he free

D．had he freed

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