The high-school students' answer to "what will life be like in 19787" sounds ______.

A．Antismoking propaganda.
B．Diseases striking nonsmokers as well as smokers.
C．Rules and regulations that prohibit smoking.
D．Separation of smokers from nonsmokers.

A．to separate people from people
B．to work together in mutual accommodation
C．to make us keenly aware of choice
D．to serve society's interests better