—Could you spare me one minute, Bob? I have a favor to ask you.

—_____.

A．It’s a pleasure

B．Go ahead

C．Help yourself

D．Ask, please

用于治疗肿瘤放疗、化疗患者呕吐的药物是（）

A．奥美拉唑

B．昂丹司琼

C．西咪替丁

D．苯海拉明

E．米索前列醇