The population in China is the largest than those in other countries.The great sum of people caused lots of problems,such as the traffic jams,the lack of land,food and water,the pollution,and so on.In order to control the increasing of people,measures have taken for over thirty years.One-child policy is one of them.Thank to the policy,the population today is within 1.3 billion.Now we still have a long way to go,but I think we'll have a bright futuer.
