2022年Unit3_Is_It_Snowing_第4课时教学设计 .pdf

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1、名师精编优秀教案Unit3 Is It Snowing 第 4 课时教学设计【内容来源】陕旅教育出版社四年级下册Unit3【主题】Read a story,Read the words,Look and write【课时】第 4 课时一、教学目标1.能听懂、理解 Part B Read a story中的内容，并能准确跟读，要求模仿正确、语音语调自然。2.通过复习 Part B Read the words中已学含有字母a的单词，引导学生总结字母 a在单词中的常见读音规则，让学生初步感知音标知识，提高学生认读和记忆单词的能力。3.教育学生不要像故事中的寒号鸟一样，只贪图眼前的安逸，应该为己的以

2、后早做打算，用辛勤的劳动来创造美好的生活！二、教学准备教师准备：1.本单元所学的词汇图片。2.寒号鸟的动画视频。3.Read a story部分的故事挂图。4.Read a story和 Read the words部分的教学音频。三、教学方法建议课程导入(Leading In)(1)课前复习教师出示天气图片，并借助本单元重点句型进行提问：T:(出示下雨的图片)Is it snowing?Ss:No,it isnt.T:Is there a wind?Ss:No,there isnt.T:Is it raining?Ss:Yes,it is.T:What do you need?Ss:I ne

3、ed a raincoat/an umbrella.名师精编优秀教案T:OK.Let s take a raincoat/an umbrella.教师也可请一位学生上台，然后出示图片，由该学生提问大家。如：（教师出示刮风的图片）S1:Is it raining?Ss:No,it isnt.S1:Is there a wind?Ss:Yes,there is.S1:What do you need?Ss:I need a coat.S1:OK.Lets put on a coat.温馨提示：必要时教师可对学生提出的问题进行补充，并鼓励学生们踊跃发言。(2)新课导人教师播放寒号鸟的动画视频，带领学

4、生提前感知新课内容，了解 Part B Read a story的故事背景。课程展示活动和过程的设计建议(presentation)(1)Part B Read a story 1.教师出示故事挂图或让学生打开书，翻到第22页，看图理解故事。教师对图片进行提问。以下问题可供参考：Question 1:How many birds are there?Question 2:What color are they?Question 3:What are the two birds doing?2.教师引导学生根据图片内容作答。3.教师鼓励学生积极思考，踊跃参与，完整回答问题。4.教师播放录音，并继

5、续提问：Question 4:Are they playing games?Question 5:Are the two birds busy?Question 6:Is it snowing in Picture 3?Question 7:Is the blue bird cold in Picture 3?Question 8:Does the blue bird have a house?Why?文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6

6、HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S

7、8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6

8、HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S

9、8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6

10、HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S

11、8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6

12、HG7H9W4P3E8 ZH2C3O6S8P6名师精编优秀教案教学小贴士教师可以适当讲解一下所提问题中比较难的唱汇，如：busy 忙碌的，why为什么。最后一个问题比较难，教师可要求学生分组讨论，鼓励他们用学过的句型回答。通过教师循序渐进的提问，让学生逐渐明白故事的含义：不要像故事中的寒号乌只贪图眼前的安逸，而应该像故事中另外两只勤劳的鸟儿一样，为自己的以后早做打算，用自己辛勤的劳动来创造美好的生活。5.教师再次播放录音，让学生模仿录音的语音语凋逐句跟读，比一比谁模仿得最像。6.学生齐读对话，教师纠正错误的语音语调。7.男女生分角色读对话(2)Part B Read the words 1.教

13、师播放 Part B Read the words部分的录音，要求学生跟读，注意强调a在这两组单词中的读音。2.教师引领学生总结字母Aa 在单词中的常见读音规则：?,e?。教学小贴士1.元音字母 Aa 在重读开音节中发其字母本身的音e?。如：face,game,cake。2.元音字母 Aa 在重读闭音节中发?。如：apple,candy,rabbit。教师注意要求学生在发?音时，将嘴巴张大，同时将两边嘴角往后靠，模仿鸭子的扁嘴。对于本部分语音知识，教师可根据学生接受程度，由浅入深，逐渐渗透，不必讲得太深入，避免学生混淆。3.教师带领学生仔细观察本部分的单词face,game,cake等，引导学

14、生发现字母 Aa 的发音规律：以不发音的 e 结尾的重读音节，字母 Aa 发其本身的音 e?。也可总结为：以一个元音字母结尾的重读音节，元音字母发该字母本身的音。4.Try to read more 4.1.教师要求学生尝试读本部分的新单词，感知字母Aa 在单词中的发音。4.2.教师鼓励学生大胆开口，勇于尝试。4.3.教师播放录音，让学生听并跟读Try to read more部分的单词，检验发音情况。文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6

15、HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S

16、8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6

17、HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S

18、8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6

19、HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S

20、8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6

21、HG7H9W4P3E8 ZH2C3O6S8P6名师精编优秀教案操练活动的设计与实施建议(Practice Activities)(1)表演 Part B Read a story 1.学生分组排练对话，教师可鼓励学生为角色配上相应的动作，要求表演大方自然，并注意相应语境中的语气。2.学生表演故事，教师可要求台下学生进行点评，最后教师给予总结性评价，并对表现出色的学生进行表扬。3.学生分小组表演完毕后，教师可以鼓励学生加入他们自己的想法，想一想还可以怎样来编创故事，并鼓励他们尽量多地将学过的句型运用于编创的故事之中。(2)Part C Look and write 1.教师引领学生看图审题，先不

22、填空。2.教师指导学生根据要求看图填空。3.随机挑选学生读句子，教师核对答案，并对踊跃答题的学生进行表扬。教学小贴士教师向学生教授做题方法：1.不要着急填空，先审题。2.注意填空时不仅要看图片，还要判断时态。3.注意抓句子中的关键词。如：动词前有be动词，那么可以判断句子的时态是现在进行时，动词要变成现在分词。参考答案：1.sun,glasses 2.snowing,sweater 3.raining,raincoat 4.clouds,umbrella(3)单元小复习做完游戏后，教师可组织带领学生对本单元所学的重点词汇、重点句型等知识内容逐一进行复习；可以采用口头表达的形式，也可以由教师出题

23、，学生做一些简单的练习题等。文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:C

24、T9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3

25、E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:C

26、T9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3

27、E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:C

28、T9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3

29、E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6名师精编优秀教案教学笔记【板书设计】文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8

30、 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9

31、I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8

32、 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9

33、I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8

34、 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6文档编码:CT9I7P9E4R6 HG7H9W4P3E8 ZH2C3O6S8P6