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试卷的分数下面,为什么要画两横?

  • 2026-04-04 11:09:23
试卷的分数下面,为什么要画两横?

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你是否还记得?

上课老师发试卷时,第一眼先找分数,第二眼就看到下面那两道红彤彤的横线。

你肯定以为:画两横,不就是老师为了强调分数、让你看清吗?

但真相是藏着一个300年前的“防作弊”秘密。

这两条横线,最初跟“强调”没有半毛钱关系。它的真实身份,是一个防伪标识。


❶最早的起源,要追溯到明清时期的账房。

古代记账,为了防止有人篡改数字,会在写好的数字下面画一道横线,表示“到此为止”,后面不能再加数字了。

后来演变成画两道横线,叫“押脚”,相当于现在的“封条”。

据《清稗类钞》记载,钱庄票号对此有严格规定:凡写银两数目,必画双线于下,以示不可增改。

这个习惯后来被私塾先生借鉴。批改完试卷,在分数下面画两道横线,意思就是:这个分数已经锁定,任何人不得修改。

所以那两道横线,本质上是在说:“此分数已生效,涂改无效。”


❷我做了一个小实验,验证了这招有多“狠”。

用红笔在纸上写个“78”,下面画两道横线。然后用橡皮把“7”改成“9”,变成“98”。

你会发现:改完数字,下面的横线位置完全对不齐,一眼就能看出动过手脚。

这个防篡改原理,跟古代账房用的是同一套逻辑。

除了防篡改,这两道横线还有另一个功能:总分核对

老师在批改时,每道题的分数加起来,写在总分位置。画第一道横线,表示“加过一次,没错”;画第二道横线,表示“复核一遍,确认无误”。

这是一个双人复核机制——哪怕只有一个老师,也要自己检查两遍,确保没有算错。

【30年老教师口述】:“我们那时候,画两道横线是铁规矩。学生改分数,横线对不上,一眼就看出来了。这招用了上百年,比什么防伪技术都管用。”


❸更惊人的是:这个传统,不同国家还有不同的用法。

在日本,老师画横线有讲究——两道横线代表“满分”,一道横线代表“及格线”,红笔和蓝笔还有不同含义。而在欧美,有些老师会画波浪线或圆圈,功能类似,都是“分数已定,不得擅改”的意思。

不过随着电子阅卷普及,手画横线越来越少了。

而那两道横线,就像老账本上的封条,在数字时代悄悄退场前,替你挡下了所有“改分数”的小心思。


你小时候见过老师画这两道横线吗?有没有过偷偷改分数的小念头?评论区一起聊聊~

💞您的每次互动,对我都是莫大鼓励,感恩遇见🥤

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  139. /yingpanguazai/ssd/ssd1/www/www.sjds.net/runtime/temp/5febe16c9207553ef9b4c4406f7af920.php ( 12.06 KB )
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  1. CONNECT:[ UseTime:0.000574s ] mysql:host=127.0.0.1;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000863s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.003912s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000304s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000739s ]
  6. SELECT * FROM `set` [ RunTime:0.001321s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000838s ]
  8. SELECT * FROM `article` WHERE `id` = 472790 LIMIT 1 [ RunTime:0.001001s ]
  9. UPDATE `article` SET `lasttime` = 1775448279 WHERE `id` = 472790 [ RunTime:0.006644s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.001120s ]
  11. SELECT * FROM `article` WHERE `id` < 472790 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000544s ]
  12. SELECT * FROM `article` WHERE `id` > 472790 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.005637s ]
  13. SELECT * FROM `article` WHERE `id` < 472790 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001083s ]
  14. SELECT * FROM `article` WHERE `id` < 472790 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.004833s ]
  15. SELECT * FROM `article` WHERE `id` < 472790 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.007179s ]
0.121115s