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唐琐同学由一道关于抛物线的题,联想到椭圆和双曲线的相应问题,这种学习方法值得提倡．文中的性质不一定是新的,但唐琐同学经过研究把它发现出来是值得赞许的．
Tang Zou's classmates are associated with the problems of ellipses and hyperbolas by a question about parabola. This learning method is worth promoting. The nature of the text is not necessarily new, but it is worthy of praise that Tang Sow studied after researching it.