The cat with a white tail isn’t _______. I think it belongs to _______.

A．mine; him

B．mine; his

C．my; him

D．my; his

《铁路旅客运输服务质量标准》要求：客运人员应熟知（）和职责，认真执行规章、制度、作业标准。

A.本岗位应知应会

B.铁路客运知识

C.客运业务知识

D.本岗位业务知识