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Are there many versions A or B in Beijing senior high school mathematics textbooks?
Dongcheng District, Chongwen District, Chaoyang District, Fengtai District, Tongzhou District, Shunyi District, Daxing District, Pinggu District and Miyun County People's Education Edition A;

The areas of PEP B are: Xicheng District, Haidian District, Xuanwu District, Shijingshan District, Mentougou District, Fangshan District, Changping District, Huairou District and Yanqing District.

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