相关方法为
分子的振动、转动能级的跃迁
A．紫外分光光度法B．红外分光光度法C．气相色谱法D．液相色谱法E．荧光法
参考答案：B
— Look! There's a food shop.
— Yes, we can buy some _____ in it. [ ]
A. bread
B. baseballs
C. clothes
D. books
