I have told you that is a stupid math model. because
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送交者: JFF 于 2010-04-27, 10:01:27:
回答: 谁TMD在乎这种生产力？到时候孩子生的少一代代下去快没人了生产力高有什么用 由 HHS 于 2010-04-27, 09:55:38:
it does not reprenst the reality. In reality,many people want and will have two children.
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