相互作用使药物吸收增加的联合用药是（）

A.阿托品联用吗啡

B.铁剂联用维生素C

C.阿托品联用普萘洛尔

D.硝苯地平联用普萘洛尔

E.普萘洛尔联用硝酸酯类

—______ your mother go to work?

—My mother goes to work by bus. [ ]

A. How do

B. How does

C. What does

D. How is