A-A+
The author concludes in the last paragraph tha
问题详情
The author concludes in the last paragraph that ______.
A．governments have spent lots of time in solving the ageing problem
B．population ageing is a hard problem, but it needs to be solved urgently
C．people are too busy to solve the population ageing problem
D．much time and effort will be lost in solving the ageing problem请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
解析：根据文章最后一段可知，作者认为有必要为老年人建立一个合适的安全网，因此排除A(已经花了很多时间)、C(太忙以至于不能解决这个问题)、D(很多时间和努力会被花掉)。
