2022年人教[2012]版数学二上《两位数加两位数》word教案 .pdf

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1、名师精编优秀教案学科数学年级二年级主 备人王艳课题两位数加两位数上 课 教师王艳课 时数一课时教学内容两位数加两位数（不进位加）教学目标1.经历自主探索、交流两位数加两位数不进位加法的计算过程。2.会正确地计算不进位的两位数加两位数.3.使学生获得自主学习的成功体验，提髙学习数学的兴趣。教学重难点重点:掌握两位数加两位数(不进位加）的笔算方法，并能正确计算。难点:掌握竖式计算的书写格式，笔算的计算顺序教学准备小棒、课件。教学流程师生活动设计思路或教学修正预习质疑生成问题师:同学们喜欢旅游参观活动吗？如果想参加的话，就要先通过今天这一关。(课件出示教材第 11 页情景图）【设计意围：集体参观是学

2、生非常熟悉的事情，用学生熟悉的、感兴趣的名师精编优秀教案师:大家看，这就是同学们准备去参观博物馆，正集合的囷片。你从图中发现了哪些数学信息？学生观察交流知道:二(1)班有 35 人，二（2)班有 32 人，二（3）班有37人，二（4)班有 34 人，每个班有2名老师带队。事情作为素材，激发学生 的学与兴趣。通过观察情景图，了解图中的数学信息，培养学生用数学的眼光去观察生活，有利于后续的计算自主学习探究问题1.笔算两位数加一位数(不进位加)师:求“二(1)班的学生和本班的带队老师一共多少人”，该怎样列式呢？学生说算式，教师板书：35十 2，【设计意图：结合具体问题，思考怎样列式，进一步理解加法的

3、定义，深刻领悟加法的算术理论】合作交流解决问题师:下面请大家用自己的方法试着算一算。学生试做，教师巡视指导。师:谁愿意说一说自己的算法和计算结果？生 1：我是口算的:我想 35 如果摆小棒是 3 捆和 5 根，加 2 根就是 37 根，所以 35+2=37。文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编

4、码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10

5、U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1

6、C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3

7、T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F

8、3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI

9、3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R

10、6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2名师精编优秀教案生 2：我是用竖式计算的：35 表示 3个十和 5 个一，加 2 就是加 2 个一，所以个位上的5 和 2 对 齐，相加就是 7，十位上是 3，所以是 37。师:是啊，以前我们学习笔算加法时.-再强调相同数位要对齐。师生共释疑难问题1.笔算两位数加两位数(不进位加 师:如果求“二(丨)班和二口)班一共冇多少人”，该怎样列式计算呢？学生尝试解答，教师巡视指导。组织交流，重点引导学生说算法。(用竖式计算时，一定要相同数位对齐，结合摆小棒可以知道，小棒的捆数与捆数相加，单根数与单根教相加，计算的

11、时候要个位上的数字加个位上的数字，十位上的数字加十位上的教字，所得结果与加数的相同数位对齐师：同学们的算法很好，现在我们一起来看用竖式计算的方法，写竖式时，首先要将两个加数的数位对齐.【设计意图：学生运用自己已有的知识经验，解决两位数加两位数的计算问题，培养学生自主 学习的能力。这样既是学生个性化算法的展示，又可以让学生体验算法的多样化，同时培养了学生的反思能力】文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI

12、3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R

13、6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编

14、码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10

15、U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1

16、C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3

17、T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F

18、3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2名师精编优秀教案然沿从个位算起教师边讲解边板演。师：刚才我们用多种方法解决/参观博物馆情境中的问题，还学 4 了用竖式计算两位数加两位数(不进位加）5我们又学会了列竖式计算的方法，同学们今后解决问题时要注意运用哟！应用拓展升华问题师：同学们，你们发现没有，知识是相通的，以前我们学过的竖式计算法则，对于现在的两位数加两位数（不进位加)仍然是适用的。所以在今后的学习和生活屮要善于积累和运用,做个有心人。

19、【设计意图：引导学 生 做 好 课 堂 小结，有助于知识的巩固和自主学习能力的提高，使学生体会到利用以前的知识经验解决新问题是学习的重要方式】板书设计两位书加两位数相同数位要对起1.而对一个新的知识，教师要让学生运用已有的知识经文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9

20、HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O

21、10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7

22、 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2

23、V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2

24、文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:C

25、X10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y

26、4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2名师精编优秀教案导学案课后反思验去思考、去探索、相兀交流，充分发挥学生的生体作用，培养学生合作与交流的能力。认识不同的算法，既让学生体验到解决问题的方法不止一个.乂让学生尝到成功的喜悦，增强了学习数學的信心。在交流不同算法的基础上突 出笔算的方法，既传承了数学知识，提高了学生的计算能力，又发展了学生的抽象思雄。2 本课的教学从学生巳有的知识经验出发,联系学生的生活实际，呆现新的问题情境，让学生从情景图中提取信息，从而提出问题，为学生的探索提供广阔的空间。在探索阶段，教师应该引导学生主动探索、合作交流、独立解决新问题，从中休验到探索成功

27、的喜悦。文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档

28、编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX1

29、0U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z

30、1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD

31、3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10

32、F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2文档编码:CX10U4Y4Z1C9 HD3T8O10F3K7 ZI3O2V8R6Z2