单项选择题
A．air pllution B．both the litter problem and waste of resources C．excess consumption D．unnecessary buying
A．the less pollution we have B．the harder pollution can be done away with C．the more pollution there will be D．the more easily pollution can be controlled
A．the box of bricks was heavier than him B．the box of bricks was lighter than him C．the box of bricks came down too fast D．the man was too careless