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张芳山1973年出生,是河南濮阳一所中学的一名化学老师,任教11年。在教学中取得优异成绩的同时,针对当前有限的能源,张老师凭着自己过硬的专业知识,经过历时半
Born in 1973, Zhang Fangshan is a chemistry teacher at a middle school in Puyang, Henan Province, teaching for 11 years. Achievements in teaching excellence at the same time, for the current limited energy, Zhang with their own excellent professional knowledge, after a lasted half