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