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1997年，原国家教委推出了高中新的教材体系，并首先在山西、江西、天津两省一市进行试验。新教材在保证内容的系统性和知识结构的合理性的前提下，与传统教材相比，一个显著的特点是增添了不少紧密结合现实生活的实用性问题和学生能够亲自参与动手画、动手做的实践性问题，即
In 1997, the former State Education Commission launched a new textbook system for senior high schools, and first conducted experiments in Shanxi, Jiangxi, and Tianjin. Under the premise of ensuring the systemicity of the content and the rationality of the knowledge structure, the new textbook has a distinctive feature in comparison with traditional textbooks. It adds many practical issues that closely integrate with real life and students can personally participate in hands-on drawing and hands-on. The practical problem to do is