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2026经开二模|试卷分析

  • 2026-05-14 20:34:38
2026经开二模|试卷分析
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01
知识点分析
自查知识薄弱点
02
试卷原文

免责声明:本试卷分析内容仅供教学教研、学生学习参考使用,真题版权归官方命题机构所有,本账号仅做公益教学解析,不用于商业盈利,侵删。

03
易错点

第1题:绝对值概念,易混淆绝对值与倒数、相反数,忽略负数的绝对值是其相反数。

第2题:幂的运算,易混淆幂的乘方、同底数幂除法及积的乘方规则,忽略指数运算的底数不变原则。

第3题:三视图识别,易混淆左视图与主视图、俯视图,忽略U型磁铁从左向右看的投影特征。

第4题:科学记数法,易忽略科学记数法要求a在1到10之间。

第5题:一元二次方程根的判别式,易忽略将方程整理为标准形式,或解不等式时未变号。

第6题:统计图表分析,易混淆样本定义,或算错众数、中位数。

第7题:不等式性质应用,易忽略b为负数时-2b为正数,或通过特殊值验证时取值不当。

第8题:正六边形面积分割,易因G点位置不确定而误判所有组合均无法确定,忽略利用对称性分析部分面积为定值,容易误选其他选项。

第9题:反比例函数与二次函数综合,易算错抛物线顶点坐标,或忽略k大于0时反比例函数在不同象限的增减性。

第10题:矩形翻折综合,易忽略三角形为直角三角形时分两种情况讨论,或误信选项中的负数解,容易误选A。

第11题:实数运算,易算错算术平方根或忽略减法运算顺序,容易误算为-9、-11或9。

第12题:因式分解,易漏提公因式或未用完全平方公式彻底分解,容易误写为2m(m²-2m)或2m(m-2)²。

第13题:圆中几何计算,易忽略利用垂径定理和勾股定理列方程,或算错半径表达式,容易误算为5、4.5或4。

第14题:分段函数与方程根,易忽略x大于等于0时函数为开口向下的抛物线,或误判方程有3个根时t的范围。

第15题:分式化简求值,易通分时符号出错或约分错误,直接代入导致计算复杂。

第16题:二元一次方程组与不等式应用,易列错单价方程组或忽略件数为整数,容易误算为小数。

第17题:网格作图与位似,画重心时易找错中线交点,位似放大时易搞错位似比方向,计算面积时易忘记平方比例关系。

第18题:解直角三角形应用,易在坡比和俯仰角的转换中混淆直角边关系,计算山峰高度时易遗漏线段或算错三角函数。

第19题:统计综合,补全条形图时易算错总人数,求圆心角时易忘记乘百分比,列表求概率时易漏掉组合情况。

第20题:圆的综合,证明平行时易忽略弦切角定理或内错角相等的条件,计算长度时易算错直径或切线长。

第21题:新定义智慧数,探究规律时易忽略分类讨论,归纳核心规律时易以偏概全,计算个数时易漏算边界值。

第22题:菱形与相似综合,证明等边三角形时易忽略角平分线与菱形性质结合,求长度时易算错线段比例,相似比应用时易找错对应边。

第23题:二次函数和谐函数,求参数时易忽略开口方向或对称轴位置,确定取值范围时易混淆最大值与最小值,存在性问题易漏解。

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  1. CONNECT:[ UseTime:0.000776s ] mysql:host=127.0.0.1;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001053s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.016134s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.002507s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001192s ]
  6. SELECT * FROM `set` [ RunTime:0.000580s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001089s ]
  8. SELECT * FROM `article` WHERE `id` = 492861 LIMIT 1 [ RunTime:0.000713s ]
  9. UPDATE `article` SET `lasttime` = 1778773928 WHERE `id` = 492861 [ RunTime:0.015563s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.004284s ]
  11. SELECT * FROM `article` WHERE `id` < 492861 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000971s ]
  12. SELECT * FROM `article` WHERE `id` > 492861 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002288s ]
  13. SELECT * FROM `article` WHERE `id` < 492861 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.029966s ]
  14. SELECT * FROM `article` WHERE `id` < 492861 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.008621s ]
  15. SELECT * FROM `article` WHERE `id` < 492861 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.003694s ]
0.223715s