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tions, international relations, and puter science.the emergence of choices marks the beginning of a new era in china39。s history。 an era of spanersity, of material and cultural richness, and an era of the rebirth of the chinese nation.we enjoy the abundance of choice. but this has not e easily.about 150 years ago, china was forced to open up its door by western canons and gunboats. it has been through the struggle and sacrifice of generations that we finally have gained the opportunity to choose for ourselves. the policy o