A．A person who spends all day working in a laboratory.
B．A person who doesn’t talk about anything but science.
C．A person who doesn’t play games well and isn’t attractive to the opposite sex.
D．A person who is not lacking the sense of humor.

A．They live a happy and healthy life.
B．They are famous for their diligence.
C．They work hard outdoors in the fields and eat less food.
D．There were few crimes, few divorces and not much illness in their society.