Dr.Smith, together with his wife and daughters, ______visit Beijing this summer. [       ]

A. is going to      

B. are going to      

C. was going to    

D. were going to

患者，男性，48岁。因患胃癌行胃大部切除，手术后第3天起咳嗽，痰呈黄色脓痰，体温最高39.3℃，稽留热型。X线胸部摄片示左中肺野大片浸润阴影，并见空洞和液平。痰培养多次为金黄色葡萄球菌。曾应用青霉素、苯唑西林、头孢呋辛、头孢噻肟、头孢他啶、阿米卡星等，病情不见改善。

本例抗菌治疗调整最适当的是（）

A.红霉素联合妥布霉素

B.万古霉素联合环丙沙星

C.头孢哌酮联合氯霉素

D.氯唑西林联合阿米卡星

E.氨曲南联合甲硝唑