单项选择题
A．the quantity of foods B．the quality of foods C．either the quantity or the quality of foods D．the quality as well as the quantity
A．meet the standard of B．realize the purpose of C．fulfill the demands of D．keep the promise of
A．showing the faulty item to the manufacturer B．explaining exactly what is wrong with the item C．saying firmly that the item is of poor quality D．asking politely to change the item