网友回答：
has kept the policy “one couple，it is reported that the world’s population was 6 billion in the year 2， more and more people losing their jobs and so on. these problems are mainly in the developing countries because the population of the developing count
温馨提醒：随时光变迁，文中所陈述观点；准确性、难免有所变动，因此文中观点仅供参考。
