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recently our country population get more and more,and then, it will cause unnecessary stress for our country, for instance,environment pollution,obtain employment, and so on, and for all of this kind of things , we not only need our government to stand out and solve problems about population,and also to get population under control is everybody commission.so all of us need get our hands together to solve population problems,and get a marry at a mature age,get a child at a mature age。