A-A+
A new tendency is demographic change is that _
问题详情
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
参考答案
正确答案：B
解析：细节题。文章第三段谈到世界人口变化的新趋势：青年人数的减少(But the decline in the number of young people is something new)。故选B。
