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当我们在解题的道路上突然陷入了死胡同,百般努力都找不到出路在何处时,最好的方式无疑就是引“回归”之源,“回归”到问题的具体化、局部、低维、熟悉的知识领域,开创一片新的天空,为我们创造更多的机会.在问题得到解决后,能在原有基础上提出新的具有拓展意义的知识内容,为培养能力及创新意识打好基础,就是活“拓展”之水.
When we suddenly fall into a blind alley on the road to problem solving and find no way out for every effort, the best way is undoubtedly the source of “return” and the “return” to the concrete formulation of the problem , Local, low-dimensional and familiar fields of knowledge to create a new sky and create more opportunities for us.When the problems are solved, we can propose new and expanded knowledge contents on the basis of the original ones, Innovation lay a good foundation, that is, live “expansion ” of the water.