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2026长沙中考压轴(回忆版)保姆级解析

  • 2026-07-07 15:27:41
2026长沙中考压轴(回忆版)保姆级解析
几何这次没有考察圆，单独出了四边形，但是主要知识点还是相似，所以也不算“偏”。此题解题方法比较多，第①问我选择了“双8字线束模型”，相对来说，步骤较为简洁。其实从知识点来说，不止我讲过，相信每个老师都讲过，而且都重点强调了平行模型。第②问主要就是沿用第一问的结论，用一个反8相似（圆内相交弦亦可），即可求得答案。
虽然知识点都是比较熟悉的，但是对于学生来说，第①问难度就相当大了，不好证，会难在通过线段替换证明相似，但是答案60还是容易得到的（可用特殊位置法逼答案）。
代数新定义，第（2）问对学生来讲，可能会有两个难点：①不知道联立（不知道题目给出的x与y的关系即是函数关系，因为不认识这个函数）②
不知道采用主元思想配方。第（3）问只要想到了联立，剩下其实就是计算了，试根法解高次方程，这个知识点也是我们作为一个专题讲过。
2026中考对后续考生的启发：
数学这个科目，其实从去年开始，无论从中考还是高考来看，都给了一种信号，就是压轴难度会断崖式上升，往拔创难度靠。中考基础100-106分送分到位，主要把基础搞好，问题都不大。但是再想往上考到108，甚至是110+，就非常需要思维，得从小学开始培养奥数，初一--初三持续训练压轴，这样，上高中后才能有一定的优势。
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长沙小升初毕业考数学复习备考疑难汇编(手写版)

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  1. CONNECT:[ UseTime:0.000577s ] mysql:host=127.0.0.1;port=3306;dbname=e460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000724s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.007347s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000429s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000656s ]
  6. SELECT * FROM `set` [ RunTime:0.005297s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000710s ]
  8. SELECT * FROM `article` WHERE `id` = 554744 LIMIT 1 [ RunTime:0.011027s ]
  9. UPDATE `article` SET `lasttime` = 1783613393 WHERE `id` = 554744 [ RunTime:0.002283s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.006115s ]
  11. SELECT * FROM `article` WHERE `id` < 554744 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.004551s ]
  12. SELECT * FROM `article` WHERE `id` > 554744 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.017817s ]
  13. SELECT * FROM `article` WHERE `id` < 554744 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.043352s ]
  14. SELECT * FROM `article` WHERE `id` < 554744 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.040139s ]
  15. SELECT * FROM `article` WHERE `id` < 554744 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.071553s ]
0.299579s