单选题 All of the following can be inferred form the passage except that ______.

A、 many developed nations suffer from the problem of a rapidly aging population
B、 the family-planning policy meets more difficulty in the countryside than in cities
C、 the increasing number of aged people is a result of the reduced birth-rate
D、 in the year of 2010 each child will have to look after one parent

【正确答案】 D

【答案解析】本题可用排除法，选项A、B、C的内容分别反映在文中China shares．．．developed nations of the world；though considerably more effective in cities than in the countryside和be- cause of．．．policy，the Chinese population is aging rapidly。选项D，文中最后一段只是说到 2010年会有9%的老龄人口，并没有说每个小孩需要照顾一位父母。