单项选择题
A.America is entering an ever-aging society B.age plays a more important role in America C.many sayings have been given a new meaning D.America's aging process is reshaping the society
A.quantity is an important factor B.families are better off with working wives C.middle-aged people are more attractive on TV D.crime is associated with people's age
A.A good Mandarin. B.Good manners. C.Higher educational background. D.All of the abov