单项选择题
A．They used to stay home from church on Sundays. B．They knew each other well. C．Most of them prepared to live in big cities. D．They liked to tell jokes among themselves.
A．Because American people do not like to talk to each other. B．Because the society does not have small communities now. C．Because not many people say "hello" to each other when they meet. D．Because people no longer maintain close relations with each other.
A．milk B．grain C．protein D．soybeans