Unit 3 Reading and Thinking & Reading for writing（阅读课讲义）英语人教版必修第二册

Unit 3 Reading and Thinking & Reading for writing （阅读课讲义） 目录 1. Lead in 2. Pre-reading 3. While Reading-Text1 4. Post Reading-Text1 Analysis 5. While Reading-Text2 6. Post Reading-Text2 Analysis 7. Post Reading-Language Building 8. Homework 1. Lead in 一、话题引入： What is the Internet? What do you usually do on the Internet? 二、问题链互动（课堂提问）： ① What changes has the Internet brought to our daily life? ② Does the Internet only bring us advantages? What are its disadvantages? 2. Pre-reading 一、话题核心词汇预热（互联网主题） 序号 英文 词性 中文释义 1 n. 互联网 2 v. 浏览（互联网） 3 adj. 方便的；便利的 4 n.&v. 益处；使受益 5 n. 距离 6 v. 激励；鼓舞 7 n. 通道；机会 v. 访问；使用 8 n. 慈善；慈善机构 9 adj. 数字的；数码的 10 v. 弥合；架起 n. 桥梁 11 n.&v. 进步；推进 12 adj. 残疾的 重点主题短语 序号 英文短语 中文释义 例句 1 浏览互联网 Many old people begin to surf the Internet nowadays. 2 陪伴某人 The Internet can keep lonely people company. 3 弥合数字鸿沟 We should make efforts to bridge the digital divide. 4 可以使用；有接触…… 的机会 Everyone should have access to newtechnology. 5 激励某人做某事 Her story inspires us to help people in need. 6 消除距离 Online communities remove the distance between people. 7 为…… 筹集资金 The website raises money for poor children. 8 多亏；由于 Thanks to the Internet, many people’s life has improved. 二、背景知识铺垫 1.Online communities 网络社区 Online communities are groups of people who communicate with each other over the Internet. People share feelings, exchange information and offer support. For people who are lonely or stuck at home, online communities are very important. 2. digital divide 数字鸿沟 The digital divide refers to the gap between those who can use digital technology and those who cannot. Many old people or poor people have little chance to get online. We should help them get access to the Internet. 三、标题 + 插图预测任务 Text 标题：STRONGER TOGETHER: HOW WE HAVE BEEN CHANGED BY THE INTERNET 思考问题： 1 What does the title suggest about the attitude of the writer? ② What aspects will the text talk about? 3. While Reading-Text1 SKIMMING 1.Match main ideas with paragraphs Para.1　　　　The _______ of the internet to our life. Para.2　　　　The _______ why Jan began to surf the Internet. Para.3　　　　Jan started an IT club to ________________. Para.4　　　　Jan continued to learn to start _______________. Para.5 Jan’s life has been _____________ by the Internet. 2.What is the text type of this passage? Argumentation Narration Exposition 3. Read for the structure Para____: General introduction of Internet’s advantages Para____: Jan’s personal experience Para____: Jan’s opinion & reflection DETAILED READING Part1 General introduction (Para.1) What convenience does the Internet bring us according to Paragraph1? Part2 Jan’s personal experience (Para.2) Finish 5W1H for Jan’s story Who What When Where Why How Question：How did the Internet change Jan’s bad situation? Part3 Jan’s actions to help others (Para.3) What did Jan do to help other people? What changes happened to those old people? Part4 Jan’s opinion & reflection(Para.4) What is Jan’s new goal? What is Jan’s final realization? Post Reading-Text1 Analysis 一、篇章结构 框架：总述互联网益处→人物真实个案（Jan 的经历）→人物回馈社会行动→感悟升华主题（议论文 + 记叙文） 明线（事件发展） 暗线（情感与认知变化） 行文结构 第一部分 (Para.1) 总 Introduce general advantages of the Internet: convenience & removing distance between people objective introduction 总述：介绍互联网带给人类的便利，最大好处是消除人与人之间的距离 第二部分 (Para.23) 分 Jan fell ill and stayed home; she got comfort & support online; she set up IT club to teach the elderly to use the Internet; other old people benefited a lot lonely → inspired → warmhearted 叙事：讲述 Jan 个人故事，从互联网获得力量之后，反过来帮助其他老年人，体现 “Stronger together” 第三部分 (Para.4) 总 Jan’s new goal of charity website; her reflection on tough times and mutual support thoughtprovoking 升华：提出弥合数字鸿沟，人与人互相扶持，点题 “Stronger together” 二、行文逻辑分析 行文逻辑：GeneraltoSpecific（总分总） 先总写互联网整体优势，再用 Jan 的真实故事作为具体案例，最后回归观点升华主题。这套 “总述优点→真实案例→反思启示” 结构，可迁移到 “科技利弊” 主题写作。 转折思辨逻辑 文本不盲目吹捧互联网：互联网不是天然造福所有人，部分群体（老年人、贫困人群）无法享受技术红利，因此需要人们主动行动，bridge the digital divide 弥合数字鸿沟。体现辩证思维，科技工具需要人的善意才能发挥价值。 点题逻辑 标题 Stronger Together 在结尾得到诠释：网络的力量不只来自技术本身，而是来自人与人互相理解、彼此扶持。 三、主题升华 What can we learn from Jan’s experience? Discussion question：The Internet brings us great benefits, but it also has disadvantages. What bad sides of Internet should we watch out for? 5. While Reading-Text2 Skimming 略读 What is the main idea of this blog post? Match main ideas with paragraphs Para.1　　　A. Three golden rules for staying safe online Para.2　　　B. Raise questions and invite readers’ comments Para.3　　　C. Introduce the blog topic Detailed Reading 细读 Part 1 Introduction (Para.1) How does the writer introduce the topic? Complete the table（提炼三条准则，区分 do’s & don’ts） Golden rules What we SHOULD do What we should NOT do Rule 1: Follow the Internet golden rule Rule 2: Protect your privacy Rule3: Be polite online Questions ① What problem will happen if we give out private information online? ② Who are the online troublemakers mentioned in the text? And how does the author explain them? Part3 Ending & Comments(Para.3) How does the author end the blog post? What can we learn from the two sample comments below the blog? 6. Post Reading-Text2 Analysis 一、博客（blog post）完整篇章框架 博客文章分为两大板块：博客正文 + 用户评论区 内容板块 写作功能 行文技巧 开头 (Introduction) Para.1 提出问题引入话题 抛出问题，直接点明博客主题 Tip1：问句开篇，快速切入主题 主体 (Body) Para.2 三条网络安全黄金准则 分点给出建议，解释网络风险名词 1. 使用连接词分层；2. 祈使句给出警示；3. 用下定义、作对比解释新词（troll /cyberbully） 结尾 (Ending) Para.3 互动提问 增强博客互动性，邀请读者参与 抛出问题，号召读者留言评论 附加板块 Comments 评论区 展示读者真实案例，补充佐证 真实案例，让话题更贴近学生生活 二、行文逻辑分析 行文逻辑：QuestionSuggestionInteraction 提问建议互动 博客开篇抛出现实问题，主体分层给出可操作建议，结尾不做封闭式总结，而是提问邀请读者留言，体现博客文体强互动性，区别于普通说明文。 解释陌生概念的写作手法（高考写作可迁移） 文中遇到 troll、cyberbully、identity theft 等网络新词，作者使用 definition（下定义）+ comparison（作对比）： 下定义：A troll is a person who posts comments…to stir up trouble online. 作对比：Like a troll, a cyberbully will also write something mean but it is usually directed at particular people. 迁移：书面表达遇到专有名词，可以用简单语言解释，提升作文清晰度。 祈使句大量使用 博客给出安全建议，大量使用祈使句，语言简洁有力，适合写建议类短文、倡议书。 三、主题升华 Discussion Discussion question：The Internet brings us convenience, but it also has hidden risks. What should we do to be smart netizens（网民）? 7. Post Reading-Language Building 一、核心主题词块 英文短语 中文释义 stay safe online 保证网络安全 avoid bad experiences 避免糟糕的经历 leave the site immediately 立刻退出网站 protect one’s privacy 保护某人的隐私 give out personal information 泄露个人信息 identity theft 身份盗用 become a target for… 成为…… 的目标 stir up trouble online 在网上挑起事端 post comments 发表评论 be directed at particular people 针对特定的人 二、逻辑连接词积累（建议类作文必备） 类别 单词 / 短语 第一点 first of all / to begin with / firstly 递进补充 second / besides / moreover / what’s more / in addition 最后一点 third / lastly / last but not least 三、重点高级句式 If you see or read something that makes you feel uncomfortable, leave the site immediately. （if 条件状语从句 + that 引导定语从句） 翻译：如果你看到或者读到令你感到不舒服的内容，请立刻退出网站。 Being online is no excuse for being rude, and you don’t want to become a target for a troll or cyberbully. （动名词作主语） 翻译：上网并不是举止粗鲁的借口，而且你也不想成为挑事者或者网络霸凌者的攻击目标。 The more polite you are, the less likely it is you will be attacked. （the + 比较级…,the + 比较级… 越…… 就越……） 翻译：你越有礼貌，你被攻击的可能性就越小。 Have you had any bad experiences online, or do you have some good advice for staying safe? Post your comments below! （问句用于文章结尾，实现互动，博客文体标志性句式） 四、可迁移写作替换 feel uncomfortable → feel uneasy 感到不适 become a target for → fall victim to 成为…… 的受害者 stir up trouble → cause trouble 挑起麻烦 It is no excuse for doing… → There is no excuse for doing… …… 不能成为做某事的借口 五、微练习（选词填空） target; privacy; stir up; identity theft; uncomfortable Don’t give out your phone number online to protect your ________. If you see something ________, quit the website right away. Some badintentioned people try to ________ trouble on the Internet. If you leak too much information, you may become a ________ for online criminals. ________ is a serious problem when our personal data is stolen. 8. Homework 作业 A：课文改编语法填空（博客原文挖空） Today I thought I’d blog about a question 1.____ has been asked many times — how do you stay safe online and avoid bad experiences on the Internet? First of all, there’s the golden rule of the Internet: If you see or read something 2.____ makes you feel uncomfortable, leave the site immediately. Don’t post comments or click on anything. Second, protect your 3.(private). Don’t give out your address or phone number. Someone might use the information 4.(steal) your identity, 5.____ is called identity theft. Third, be polite. Being online 6.(be) no excuse for being rude. A troll is a person who posts comments 7.(stir) up trouble online. A cyberbully, like a troll, will also write something mean 8.____ it is usually directed at particular people. However, the 9.(polite) you are, the less likely it is that you 10.(attack). Have you had any bad experiences online? Post your comments below! 作业 B：微写作（博客片段仿写，80 词左右） 任务：仿照课文博客写法，写一篇博客片段，主题：Tips for being a smart netizen。 要求：①问句开头引入话题；②使用 23 条建议，用上连接词；③结尾提问邀请读者评论；④至少使用一处 the + 比较级句型。 14 / 17 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $ Unit 3 Reading and Thinking & Reading for writing （阅读课讲义） 目录 1. Lead in 2. Pre-reading 3. While Reading-Text1 4. Post Reading-Text1 Analysis 5. While Reading-Text2 6. Post Reading-Text2 Analysis 7. Post Reading-Language Building 8. Homework 1. Lead in 一、话题引入： What is the Internet? What do you usually do on the Internet? 【答案】 chat with friends；have online lessons；go through news；stream videos；play online games；order food；shop online 二、问题链互动（课堂提问）： ① What changes has the Internet brought to our daily life? ② Does the Internet only bring us advantages? What are its disadvantages? 【答案】 1 It brings us convenience. We can communicate, study and shop online. ② No. It also causes problems: information safety, screen addiction, false information. 2. Pre-reading 一、话题核心词汇预热（互联网主题） 序号 英文 词性 中文释义 1 internet n. 互联网 2 surf v. 浏览（互联网） 3 convenient adj. 方便的；便利的 4 benefit n.&v. 益处；使受益 5 distance n. 距离 6 inspire v. 激励；鼓舞 7 access n. 通道；机会 v. 访问；使用 8 charity n. 慈善；慈善机构 9 digital adj. 数字的；数码的 10 bridge v. 弥合；架起 n. 桥梁 11 advance n.&v. 进步；推进 12 disabled adj. 残疾的 重点主题短语 序号 英文短语 中文释义 例句 1 surf the Internet 浏览互联网 Many old people begin to surf the Internet nowadays. 2 keep sb company 陪伴某人 The Internet can keep lonely people company. 3 bridge the digital divide 弥合数字鸿沟 We should make efforts to bridge the digital divide. 4 have access to 可以使用；有接触…… 的机会 Everyone should have access to newtechnology. 5 inspire sb to do sth 激励某人做某事 Her story inspires us to help people in need. 6 remove the distance 消除距离 Online communities remove the distance between people. 7 raise money for 为…… 筹集资金 The website raises money for poor children. 8 thanks to 多亏；由于 Thanks to the Internet, many people’s life has improved. 二、背景知识铺垫 1.Online communities 网络社区 Online communities are groups of people who communicate with each other over the Internet. People share feelings, exchange information and offer support. For people who are lonely or stuck at home, online communities are very important. 2. digital divide 数字鸿沟 The digital divide refers to the gap between those who can use digital technology and those who cannot. Many old people or poor people have little chance to get online. We should help them get access to the Internet. 三、标题 + 插图预测任务 Text 标题：STRONGER TOGETHER: HOW WE HAVE BEEN CHANGED BY THE INTERNET 思考问题： 1 What does the title suggest about the attitude of the writer? ② What aspects will the text talk about? 【答案】 ① Positive / Optimistic. The writer holds a positive attitude towards the Internet. 2 It will talk about how the Internet changes people’s life, its benefits and reallife examples. 3. While Reading-Text1 SKIMMING 1.Match main ideas with paragraphs Para.1　　　　The _______ of the internet to our life. Para.2　　　　The _______ why Jan began to surf the Internet. Para.3　　　　Jan started an IT club to ________________. Para.4　　　　Jan continued to learn to start _______________. Para.5 Jan’s life has been _____________ by the Internet. 2.What is the text type of this passage? Argumentation Narration Exposition 3. Read for the structure Para____: General introduction of Internet’s advantages Para____: Jan’s personal experience Para____: Jan’s opinion & reflection 【答案】 Benefits reason help older people a charity website greatly improved C 1；24；5 DETAILED READING Part1 General introduction (Para.1) What convenience does the Internet bring us according to Paragraph1? 【答案】 Shopping without cash or waiting in line. Get the most updated information from larger databases (search engines) Download software, documents, images. Part2 Jan’s personal experience (Para.2) Finish 5W1H for Jan’s story Who Jan Tchamani, an English teacher What She fell seriously ill and had to stay home alone. When At age 50 Where Birmingham Why She felt lonely, so she turned to the Internet for help. How She surfed the Internet, joined online groups and got support from others. Question：How did the Internet change Jan’s bad situation? 【答案】She surfed the Internet to explore the world, joined online groups and got support from other people online. She no longer felt lonely. Part3 Jan’s actions to help others (Para.3) What did Jan do to help other people? What changes happened to those old people? 【答案】 She started an IT club to teach older people how to use computers and the Internet. Some learned to apply for work online and found great jobs. Some could take care of themselves. One woman set up her own online company. Part4 Jan’s opinion & reflection(Para.4) What is Jan’s new goal? What is Jan’s final realization? 【答案】 Her new goal is to start a charity website to raise money for children in poor countries. When we go through tough times and meet people who share similar challenges, we can get inspiration and offer help to each other. Post Reading-Text1 Analysis 一、篇章结构 框架：总述互联网益处→人物真实个案（Jan 的经历）→人物回馈社会行动→感悟升华主题（议论文 + 记叙文） 明线（事件发展） 暗线（情感与认知变化） 行文结构 第一部分 (Para.1) 总 Introduce general advantages of the Internet: convenience & removing distance between people objective introduction 总述：介绍互联网带给人类的便利，最大好处是消除人与人之间的距离 第二部分 (Para.23) 分 Jan fell ill and stayed home; she got comfort & support online; she set up IT club to teach the elderly to use the Internet; other old people benefited a lot lonely → inspired → warmhearted 叙事：讲述 Jan 个人故事，从互联网获得力量之后，反过来帮助其他老年人，体现 “Stronger together” 第三部分 (Para.4) 总 Jan’s new goal of charity website; her reflection on tough times and mutual support thoughtprovoking 升华：提出弥合数字鸿沟，人与人互相扶持，点题 “Stronger together” 二、行文逻辑分析 行文逻辑：GeneraltoSpecific（总分总） 先总写互联网整体优势，再用 Jan 的真实故事作为具体案例，最后回归观点升华主题。这套 “总述优点→真实案例→反思启示” 结构，可迁移到 “科技利弊” 主题写作。 转折思辨逻辑 文本不盲目吹捧互联网：互联网不是天然造福所有人，部分群体（老年人、贫困人群）无法享受技术红利，因此需要人们主动行动，bridge the digital divide 弥合数字鸿沟。体现辩证思维，科技工具需要人的善意才能发挥价值。 点题逻辑 标题 Stronger Together 在结尾得到诠释：网络的力量不只来自技术本身，而是来自人与人互相理解、彼此扶持。 三、主题升华 What can we learn from Jan’s experience? 【答案】 The Internet can create a cycle of support and inspiration among people. The Internet can help people reduce loneliness and boredomduring difficult times. The Internet can empower not only the learner but also theteacher (Jan herself in this case) to make a positive impact. People can use the Internet to contribute to society and help others. Discussion question：The Internet brings us great benefits, but it also has disadvantages. What bad sides of Internet should we watch out for? 【答案】 We should guard against false online information. Teenagers should avoid screen addiction. We must pay attention to personal information safety online. While enjoying convenience, we should make good use of online resources and respect other netizens. 5. While Reading-Text2 Skimming 略读 What is the main idea of this blog post? Match main ideas with paragraphs Para.1　　　A. Three golden rules for staying safe online Para.2　　　B. Raise questions and invite readers’ comments Para.3　　　C. Introduce the blog topic 【答案】 This blog post gives practical golden rules / advice on how to stay safe online and avoid bad online experiences. Para 1 — C Para 2 — A Para 3 — B Detailed Reading 细读 Part 1 Introduction (Para.1) How does the writer introduce the topic? 【答案】By raising a question: how do you stay safe online and avoid bad experiences on the Internet. Part2 Bodythree golden rules (Para.2) Complete the table（提炼三条准则，区分 do’s & don’ts） Golden rules What we SHOULD do What we should NOT do Rule 1: Follow the Internet golden rule Leave the site immediately if feeling uncomfortable Don’t post comments or click on anything Rule 2: Protect your privacy Keep personal information secret Don’t give out your address or phone number Rule3: Be polite online Be polite when surfing online Don’t be rude online; avoid becoming a target for trolls or cyberbullies Questions ① What problem will happen if we give out private information online? 【答案】Someone may steal our identity. Identity theft will happen. ② Who are the online troublemakers mentioned in the text? And how does the author explain them? 【答案】Trolls and cyberbullies. The author uses definition & comparison to explain them. A troll stirs up trouble online; a cyberbully means harm to particular people, similar to a troll. Part3 Ending & Comments(Para.3) How does the author end the blog post? 【答案】The author puts forward questions and invites readers to post their own comments below, to achieve online interaction. What can we learn from the two sample comments below the blog? 【答案】They show reallife bad online experiences, which prove that online risks are common among teenagers. 6. Post Reading-Text2 Analysis 一、博客（blog post）完整篇章框架 博客文章分为两大板块：博客正文 + 用户评论区 内容板块 写作功能 行文技巧 开头 (Introduction) Para.1 提出问题引入话题 抛出问题，直接点明博客主题 Tip1：问句开篇，快速切入主题 主体 (Body) Para.2 三条网络安全黄金准则 分点给出建议，解释网络风险名词 1. 使用连接词分层；2. 祈使句给出警示；3. 用下定义、作对比解释新词（troll /cyberbully） 结尾 (Ending) Para.3 互动提问 增强博客互动性，邀请读者参与 抛出问题，号召读者留言评论 附加板块 Comments 评论区 展示读者真实案例，补充佐证 真实案例，让话题更贴近学生生活 二、行文逻辑分析 行文逻辑：QuestionSuggestionInteraction 提问建议互动 博客开篇抛出现实问题，主体分层给出可操作建议，结尾不做封闭式总结，而是提问邀请读者留言，体现博客文体强互动性，区别于普通说明文。 解释陌生概念的写作手法（高考写作可迁移） 文中遇到 troll、cyberbully、identity theft 等网络新词，作者使用 definition（下定义）+ comparison（作对比）： 下定义：A troll is a person who posts comments…to stir up trouble online. 作对比：Like a troll, a cyberbully will also write something mean but it is usually directed at particular people. 迁移：书面表达遇到专有名词，可以用简单语言解释，提升作文清晰度。 祈使句大量使用 博客给出安全建议，大量使用祈使句，语言简洁有力，适合写建议类短文、倡议书。 三、主题升华 Discussion Discussion question：The Internet brings us convenience, but it also has hidden risks. What should we do to be smart netizens（网民）? 【答案】 We should protect our personal privacy and behave politely online. When facing bad information or online violence, we should stay away from it instead of arguing. We should make good use of the Internet and refuse to become victims of online crimes. 7. Post Reading-Language Building 一、核心主题词块 英文短语 中文释义 stay safe online 保证网络安全 avoid bad experiences 避免糟糕的经历 leave the site immediately 立刻退出网站 protect one’s privacy 保护某人的隐私 give out personal information 泄露个人信息 identity theft 身份盗用 become a target for… 成为…… 的目标 stir up trouble online 在网上挑起事端 post comments 发表评论 be directed at particular people 针对特定的人 二、逻辑连接词积累（建议类作文必备） 类别 单词 / 短语 第一点 first of all / to begin with / firstly 递进补充 second / besides / moreover / what’s more / in addition 最后一点 third / lastly / last but not least 三、重点高级句式 If you see or read something that makes you feel uncomfortable, leave the site immediately. （if 条件状语从句 + that 引导定语从句） 翻译：如果你看到或者读到令你感到不舒服的内容，请立刻退出网站。 Being online is no excuse for being rude, and you don’t want to become a target for a troll or cyberbully. （动名词作主语） 翻译：上网并不是举止粗鲁的借口，而且你也不想成为挑事者或者网络霸凌者的攻击目标。 The more polite you are, the less likely it is you will be attacked. （the + 比较级…,the + 比较级… 越…… 就越……） 翻译：你越有礼貌，你被攻击的可能性就越小。 Have you had any bad experiences online, or do you have some good advice for staying safe? Post your comments below! （问句用于文章结尾，实现互动，博客文体标志性句式） 四、可迁移写作替换 feel uncomfortable → feel uneasy 感到不适 become a target for → fall victim to 成为…… 的受害者 stir up trouble → cause trouble 挑起麻烦 It is no excuse for doing… → There is no excuse for doing… …… 不能成为做某事的借口 五、微练习（选词填空） target; privacy; stir up; identity theft; uncomfortable Don’t give out your phone number online to protect your ________. If you see something ________, quit the website right away. Some badintentioned people try to ________ trouble on the Internet. If you leak too much information, you may become a ________ for online criminals. ________ is a serious problem when our personal data is stolen. 【答案】 1.privacy 2.uncomfortable 3.stir up 4.target 5.Identity theft 8. Homework 作业 A：课文改编语法填空（博客原文挖空） Today I thought I’d blog about a question 1.____ has been asked many times — how do you stay safe online and avoid bad experiences on the Internet? First of all, there’s the golden rule of the Internet: If you see or read something 2.____ makes you feel uncomfortable, leave the site immediately. Don’t post comments or click on anything. Second, protect your 3.(private). Don’t give out your address or phone number. Someone might use the information 4.(steal) your identity, 5.____ is called identity theft. Third, be polite. Being online 6.(be) no excuse for being rude. A troll is a person who posts comments 7.(stir) up trouble online. A cyberbully, like a troll, will also write something mean 8.____ it is usually directed at particular people. However, the 9.(polite) you are, the less likely it is that you 10.(attack). Have you had any bad experiences online? Post your comments below! 【答案】 1.that 2.that 3.privacy 4.to steal 5.which 6.is 7.to stir 8.but 9.more polite 10.will be attacked 作业 B：微写作（博客片段仿写，80 词左右） 任务：仿照课文博客写法，写一篇博客片段，主题：Tips for being a smart netizen。 要求：①问句开头引入话题；②使用 23 条建议，用上连接词；③结尾提问邀请读者评论；④至少使用一处 the + 比较级句型。 【参考范文】 Tips for being a smart netizen Today I’d like to blog about a question many teenagers care about: How can we be smart netizens in the digital age? First of all, we should protect our privacy and never give out too much personal information online. Besides, we ought to behave politely and refuse online violence. The more careful we are, the safer we will be on the Internet. Do you have any other practical tips? Post your comments below! 14 / 17 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $