We can conclude from the passage that the scientific means for recycling solid waste________.

A．American people realize that all the wastes can be converted into useful resources
B．the main barrier for recycling is the lack of valuable new technological approaches
C．today only a little of the waste is diverted from municipal dump due to the high cost
D．it is much more cheaper to use recycled materials

A．tend to stay at home for more than 18 weeks
B．tend to adopt a male agenda
C．tend to quit their jobs and stay at home
D．tend to be submissive wives