今年的全国高考理科综合试卷化学试题第 31题 ,是一道经典的精品习题 ,让我们来领略一下解答这道试题的思维之美吧 !题目　A、B、C是短周期ⅠA和ⅡA族元素的碳酸盐 ,它们的质量分别为mA、mB、mC,与足量盐酸完全反应 ,消耗盐酸的物质的量分别为nA(HCl)、nB(HCl)、nC(HCl)。已知 This year’s National College Entrance Examination for Science, the 31st question in chemistry test questions, is a classic exquisite exercise, let us take a look at the beauty of the answer to this question! Topics A, B, and C are the carbon of the short-cycle IA and IIA elements. The acid salts, whose masses are respectively mA, mB, mC, are fully reacted with a sufficient amount of hydrochloric acid, and the amounts of substances that consume hydrochloric acid are nA(HCl), nB(HCl), nC(HCl), respectively. A known