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1. Beijing Niulanshan First Secondary School, Beijing 101300, China;
2. Beijing Niulanshan No.1 Experimental School, Beijing 101300, China;
3. Beijing Shunyi Education Research and Teacher Training Center, Beijing 101300, China;
4. Basic Education Teaching Research Center, Beijing Academy of Educational Sciences, Beijing 100088, China;
5. Beijing Dongcheng Academy of Educational Sciences, Beijing 100009, China |
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