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七上历史ppt课件丨一张纸,改变了世界文明

  • 2026-11-07 12:41:49
七上历史ppt课件丨一张纸,改变了世界文明

七上历史ppt课件丨一张纸，改变了世界文明

东汉时期，蔡伦改进造纸术，让文字摆脱了竹简的束缚。轻便、易保存的纸张推动了知识传播，也影响了世界文明的发展。一项技术的改变，可能改变整个时代的学习方式。 #七年级历史 #秦汉科技 #造纸术 #蔡伦 #历史知识 #初中历史 #历史课件 #中国古代科技 #学习笔记 #历史学习

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新苏少九上|10.《寻味运河》美术课件

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  1. CONNECT:[ UseTime:0.000796s ] mysql:host=172.18.0.4;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001016s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000451s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000401s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000534s ]
  6. SELECT * FROM `set` [ RunTime:0.000274s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000662s ]
  8. SELECT * FROM `article` WHERE `id` = 539141 LIMIT 1 [ RunTime:0.000353s ]
  9. UPDATE `article` SET `lasttime` = 1794108229 WHERE `id` = 539141 [ RunTime:0.001325s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000314s ]
  11. SELECT * FROM `article` WHERE `id` < 539141 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000392s ]
  12. SELECT * FROM `article` WHERE `id` > 539141 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000418s ]
  13. SELECT * FROM `article` WHERE `id` < 539141 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000564s ]
  14. SELECT * FROM `article` WHERE `id` < 539141 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000545s ]
  15. SELECT * FROM `article` WHERE `id` < 539141 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000993s ]
0.090191s