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对于很多课本习题,我们若仔细研究就能发现有价值的新东西,给我们的解题带来思路和方法,这样才真正达到事半功倍之效,下面举一例.
For many textbook exercises, if we carefully study it, we can discover valuable new things and bring thoughts and methods to our problem solving. Only in this way can we really achieve a multiplier effect.