The passage mentions that many people believe that if you don't eat breakfast, you will______.

A．breakfast has great effect on work and studies
B．breakfast has much to do with people's health
C．a person will work better if he has simple breakfast
D．breakfast only affects those who work with their brains

A．classify the bookstores
B．beautify the streets and neighborhoods
C．enrich people's minds with knowledge
D．increase people's purchasing power