________ for the free ticket, I would not have gone to the theatre so often.

A．Were it not

B．Had it not been

C．Had not it been

D．Were not it

关于改革开放初期原有“四大专业银行”分工的下列说法中错误的是( )。

A．中国工商银行专门经营工商信贷和个人储蓄业务

B．中国银行专门制订和执行货币政策，维护金融稳定

C．中国农业银行专门经营农村金融业务

D．中国建设银行专门经营基础设施建设等长期信用业务