A new tendency is demographic change is that ______ .A.life expectancy has been going up s

外语类 英语考试 已帮助 人

A new tendency is demographic change is that ______ .

A.life expectancy has been going up steadily

B.there is a decline of the young population

C.in America the birth rate has gone above replacement level

D.the old population has risen sharply in USA

热搜:投资利率系数对is曲线的影响