He has lunch ______ his friends at school.[ ]

A. for

B. with

C. to

胆道手术后经T型管胆道造影，下列哪些描述是正确的()

A．术后7天可以进行造影检查

B．造影前用生理盐水冲洗胆道

C．造影时为了使胆道充分显影，可改变患者体位

D．造影后应开放T型管引流

E．造影后有发热时可用抗生素