--- How is the _______ in Hangzhou ?

--- Awful. There are always long lines of cars on roads .

A．culture

B．food

C．weather

D．traffic

药物作用的基本原理可用下列哪项来解释（）

A.“相须相使”

B.“配伍禁忌”

C.“服药食忌”

D.“相畏相杀”

E.“以偏纠偏”