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读罢2005年1月上《直线系的应用》一文,自己的“把简单的问题复杂化”的癖好又来了．我仔细看了看例3的答案与条件关系,又有了新问题．
Reading the article “Application of the Linear System” in January 2005, his own “complexity of simple problems” has returned. I took a closer look at the relationship between the answers and conditions in Example 3 and there were new problems.