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已知由若干个小立方体组成的几何体的三视图,求出组成这个几何体所需小立方体的个数.这是我们感到困难的问题,也是中考的热点.
Knowing the three views of the geometry composed of several small cubes, we can get the number of small cubes needed to make up the geometry, which is a problem that we find difficult and also a hot spot in the exam.