单项选择题
A．when we are hungry B．when we want to C．after the meal D．before the meal
A．be large producers of applesauce B．be large producers of apples C．have the longest history in apple production D．have the coldest winter among apple producing countries
A．people can live from 120 to 180 B．it is still doubtful how long humans can live C．the human body is designed to last past about 120 years D．it is possible for humans to live longer in the future