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课件:第一节种子的萌发|人教版生物七年级下册|轻松掌握教材重难点

  • 2026-04-03 05:00:46
课件:第一节种子的萌发|人教版生物七年级下册|轻松掌握教材重难点

[图片]详解教材重难点[图片]一、温故知新[图片]二、探究种子萌发的环境条件1、提出问题种子在什么样的环境条件下才能萌发？2、作出假设资料1、许多作物是在春天播种，天寒地冻不适于播种；推测种子萌发需要：适宜的温度。资料2、在播种前往往要在地里浇一些水，使土壤潮湿，但过于潮湿容易使...

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  1. CONNECT:[ UseTime:0.000616s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000688s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000368s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000353s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000612s ]
  6. SELECT * FROM `set` [ RunTime:0.000297s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000751s ]
  8. SELECT * FROM `article` WHERE `id` = 477087 LIMIT 1 [ RunTime:0.000549s ]
  9. UPDATE `article` SET `lasttime` = 1775495819 WHERE `id` = 477087 [ RunTime:0.012287s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000409s ]
  11. SELECT * FROM `article` WHERE `id` < 477087 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000551s ]
  12. SELECT * FROM `article` WHERE `id` > 477087 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.004453s ]
  13. SELECT * FROM `article` WHERE `id` < 477087 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000819s ]
  14. SELECT * FROM `article` WHERE `id` < 477087 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.003352s ]
  15. SELECT * FROM `article` WHERE `id` < 477087 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001054s ]
0.107255s