Unit 7 Invention and Innovation（A卷·基础巩固）《英语 基础模块2》（高教版第三版）单元过关卷（原卷版+解析版）

编写说明：本套试卷紧扣《英语 基础模块2》（高教版第三版）教材，以教材单元为基准精准覆盖核心考点。 每个单元设置AB卷，A卷为基础巩固卷，侧重基础考点训练，帮助学生扎实掌握知识要点；B卷为能力提升卷，注重知识整合与全面检测，引导学生构建知识网络。全书设计4份综合测试卷，模拟实战情境，聚焦解题能力突破，全面提升应试能力与知识应用水平。 《英语 基础模块2》（高教版第三版）《单元过关卷》 Unit 7 Invention and Innovation （A卷·基础巩固） 考试时间：90分钟 满分：100分 班级 姓名 学号 成绩 一、单项选择（共15小题，每小题2分，共30分） 从每小题所给的四个选项中，选出一个可以填入空白处的最佳选项。 1．—______ is the programs, etc. used to operate a computer. —OK. I understand. A．Software B．Technology C．Information D．Internet 【答案】A 【详解】句意：——软件是用来操作计算机以及诸如此类的程序。——好的。我明白了。 考查名词辨析。Software软件；Technology科技；Information消息；Internet互联网。根据“...used to operate a computer.”可知，软件是用来操作计算机的程序。故选A。 2．—Confucius is a great thinker. His words still have a great ________ on millions of people around the world today. —That’s true. His words are always educational. A．meaning B．effect C．impression D．opinion 【答案】B 【详解】句意：——孔子是一位伟大的思想家。他的话至今仍对全世界数百万人有着巨大的影响。——确实如此。他的话总是富有教育意义。 考查名词辨析。meaning意义；effect影响；impression印象；opinion观点。根据“His words are always educational.”可知，此处强调孔子言论对人们的影响，have a great effect on ...“对……有巨大影响”，是固定搭配，符合语境。故选B。 3．Time waits for no man, but some people won’t ________ the importance of time until it’s gone. A．realize B．remember C．doubt D．suggest 【答案】A 【详解】句意：时间不等人，但有些人直到时间逝去才会意识到它的重要性。 考查动词辨析。realize意识到；remember记得；doubt怀疑；suggest建议。根据“until it’s gone”可知，此处表示“直到时间逝去才意识到时间的重要性”，强调从不知道到明白的过程，realize最符合语境。故选A。 4．Can he write with one hand and draw with the other ________? A．at same time B．in the same time C．on the time D．at the same time 【答案】D 【详解】句意：他能一只手写字，另一只手同时画画吗？ 考查介词短语。at same time表述错误，缺少定冠词；in the same time表述错误；on the time表述错误；at the same time同时。故选D。 5．Mary can sing well, ________ she can play many musical instruments. A．but B．and C．or D．because 【答案】B 【详解】句意：玛丽唱歌很好，而且她能演奏许多乐器。 考查连词辨析。but但是；and而且；or或者；because因为。句子前后部分为并列关系，因此用连词and。故选B。 6．Many traditional jobs are disappearing, ________ new jobs are appearing. A．but B．so C．or D．for 【答案】A 【详解】句意：许多传统工作正在消失，但是新的工作正在出现。 but但是；so因此；or或者；for因为。根据前后句“传统工作消失”和“新工作出现”的转折关系可知，应填but。 7．The view from the top of Mount Lu is amazing, ________ it draws many tourists every year. A．when B．if C．so D．but 【答案】C 【详解】句意：庐山山顶的景色令人惊叹，所以每年都吸引了许多游客。 考查连词辨析。when当……时候，引导时间状语从句；if如果，引导条件状语从句；so所以，表因果关系；but但是，表转折关系。根据“The view from the top of Mount Lu is amazing...it draws many tourists every year.”可知，句中表述庐山山顶景色令人惊叹，“因此”每年吸引很多游客，前后是因果关系。故选C。 8．We should stop climate change, ________ the earth will become worse and worse. A．so B．because C．but D．or 【答案】D 【详解】句意：我们应该阻止气候变化，否则地球将会变得越来越糟糕。 考查连词辨析。so所以；because因为；but但是；or否则。根据“the earth will become worse and worse”可知，此处表示不这样做的后果，应用or表示“否则”。故选D。 9．Ding Feng is an ancient book restorer (修复师) at Nanjing Library. He thinks a good restorer should leave fewer restoring marks, ________ the book will live hundreds of years longer. A．until B．and C．when D．or 【答案】B 【详解】句意：丁峰是南京图书馆的一名古籍修复师。他认为一个好的修复师应该留下更少的修复痕迹，这样书就能再保存几百年。 考查连词辨析。until直到；and和，而且；when当……时；or或者，否则。根据“a good restorer should leave fewer restoring marks”以及“the book will live hundreds of years longer”可知，前后句之间存在顺承和因果关系，即“留下较少的修复痕迹，(那么) 这本书就能保存得更久”。and表示顺承或结果。故选B。 10．Mary can sing well, ________ she can play many musical instruments. A．but B．and C．or D．because 【答案】B 【详解】句意：玛丽唱歌很好，而且她能演奏许多乐器。 考查连词辨析。but但是；and而且；or或者；because因为。句子前后部分为并列关系，因此用连词and。故选B。 11．—How do you feel about growing up? —It’s not easy, ________ it’s meaningful. A．and B．but C．so D．or 【答案】B 【详解】句意：——你对成长有什么感觉？——这并不容易，但很有意义。 and和，表示并列；but但是，表示转折；so因此，表示结果；or或者，表示选择。根据“It’s not easy”和“it’s meaningful.”可知，两者之间是转折关系，应用连词but连接。故选B。 12．Many traditional jobs are disappearing, ________ new jobs are appearing. A．but B．so C．or D．for 【答案】A 【详解】句意：许多传统工作正在消失，但是新的工作正在出现。 but但是；so因此；or或者；for因为。根据前后句“传统工作消失”和“新工作出现”的转折关系可知，应填but。 13．Martha helped me a lot, ________ I want to send her a thank-you card. A．or B．but C．so D．and 【答案】C 【详解】句意：Martha帮了我很多，所以我想给她寄一张感谢卡。 考查连词辨析。or或者；but但是；so所以；and和。前半句“Martha helped me a lot”是原因，后半句“I want to send her a thank-you card”是结果，因此用表示结果的连词so连接。故选C。 14．—What’s your favorite outdoor activity? —________ A．I like reading books. B．I enjoy playing basketball. C．I love playing chess. D．I often do some cleaning. 【答案】B 【详解】句意：——你最喜欢的户外活动是什么？——我喜欢打篮球。 考查情境交际。I like reading books.我喜欢读书，是室内活动；I enjoy playing basketball.我喜欢打篮球，是户外活动；I love playing chess.我喜欢下棋；I often do some cleaning.我经常做一些清洁。根据问句“favorite outdoor activity”可知，回答应明确是户外活动，且需符合日常习惯。B项“playing basketball”是典型的户外运动。故选B。 15．—The invention of self-driving is seen as a great development in life. — ___________ A．I’m afraid not. B．No problem. C．You are welcome. D．I couldn’t agree more. 【答案】D 【详解】句意：——自动驾驶的发明被视为生活中的一个重大发展。——我非常同意。 考查情境交际用语。I’m afraid not.恐怕不是，表示不同意；No problem没问题，常用于回应请求；You are welcome不客气，用于回应感谢；I couldn’t agree more我非常同意，表示完全赞同。题干表达了一个积极的观点（自动驾驶是重大发展），需要选择回应此观点的合适选项。故选D。 第二节 语言应用（共5题，每小题2分，共10分） 根据图片所提供的信息，从三个选项中选出可以填入空白处的最佳选项。 16．From the picture, which is the earliest chatting tool? A．Kaokao Talk B．Line and WeChat C．WhatsApp 【答案】C 【详解】考查细节理解。句意：从图片上看，这是最早的聊天工具？根据每个聊天工具最下方的日期可知，WhatsApp创立于2009年5月，早于KakaoTalk（2010年3月）、WeChat（2011年1月）和Line（2011年6月），WhatsApp是最早的聊天工具。故选C。 17．Which of the following inventions is Not in Ancient China? A．Paper-making. B．Printing. C．High-speed railway. 【答案】C 【详解】考查细节理解。句意：以下哪项不是中国古代的发明？根据常识可知，中国古代四大发明包括：造纸术，印刷术，火药和指南针，不包括高铁。故选C。 18．According to the picture, which is the RIGHT meaning of the word “typography”? A．An instrument giving directions B．A kind of skill of making paper. C．Printing. 【答案】C 【详解】考查词句猜测。句意：根据图片，“typography”一词的正确含义是什么？根据图片中的内容和常识可知中国古代的四大发明是造纸术、印刷术、火药以及指南针。第一幅图中的文字“把握方向，永不偏离路线”，可知第一幅图是compass“指南针”；第二幅图中的文字“谨慎行事，当心玩火自焚”可知，应是“火药”；第三幅图中的“papermaking skill”根据单词的构成及图片可知，是“造纸术”；所以第四幅图中的英文单词“typography”应是指印刷术。故选C。 19．The sweeping robot can be controlled by ________. A．ECOVACS B．efficient and safe machine C．APP and voice 【答案】C 【详解】考查细节理解。题意：扫地机器人可以由应用程序和语音操控。根据图片中“App Control, Voice Control”可知，扫地机器人可以由应用程序和语音操控，即“APP and voice”。故选C。 20．What will you do first when you send an e-mail? A．You should log in first. B．You should check in first. C．You should log out first. 【答案】A 【详解】考查细节理解。句意：当你发送邮件之前你首先要做什么？根据图片信息“log in(登录)”得知在你发邮件前要先登录。故选A。 二、阅读理解（共4小题，每小题2.5分，共10分） 阅读下列短文，根据短文内容从每小题所给的四个选项中，选出一个最佳选项。 Man has many interesting inventions since the beginning of time. One of the most important inventions is the computer. It has changed all our lives. People built the first computer in Harvard University (佛大学) in 1944. It was as large as a room and quite difficult and slow to operate (操作). But since the invention of the silicon chip (硅片), computer has become smaller, easier to use, and faster to operate. Some computers are as small as TV sets. People can make computer smaller than a book. And computers are getting smaller all the time. Why is the computer useful to us? First, it can keep a lot of news and messages. Second, the computer can operate very fast — thousands of times faster than a man, and it will not be tired. Third, people can build computers into other kinds of machines, like radios, cars and planes. Computers can do a lot of work for us. Soon, almost everyone will use some kinds of computers. This invention will change the lives of all of us. 21．What was the first computer like? A．It was quick to operate. B．It was easy to handle. C．It was as large as a room. D．It became small. 22．How long is the history of computers? A．forty-four years. B．forty-five years. C．fifty years. D．more than sixty years. 23．The computer has become smaller and easier to use because of the invention of _________. A．many kinds of machines B．the silicon chip C．numbers and words D．cars and radios 24．The computer is useful for the following reasons except _______. A．it is getting small all the time B．it can keep lots of messages and news C．it can operate very fast D．it can be built into other machines 【答案】21．C 22．D 23．B 24．A 【导语】本文是一篇说明文，文章介绍了计算机是人类重要发明之一，讲述了其发展历史、因硅片发明而变小易用的变化、对人类有用的原因，以及其未来将更广泛影响人们生活。 21．细节理解题。根据第二段“It was as large as a room (它和一个房间一样大)”可知，第一台计算机的样子是和一个房间一样大。故选C。 22．细节理解题。根据第二段“People built the first computer in Harvard University in 1944. (人们1944年在哈佛大学建造了第一台计算机。)”可知，到现在2025年已经有超过六十年的历史。故选D。 23．细节理解题。根据第二段“But since the invention of the silicon chip, computer has become smaller, easier to use, and faster to operate. (但自从硅片的发明，电脑就变得更小，使用起来更简单，操作起来更快。)”可知，电脑变得更小，使用起来更简单的原因是硅片的发明。故选B。 24．细节理解题。根据最后一段“it can keep a lot of news and messages. (它能够保存大量的新闻和信息)”，“the computer can operate very fast (电脑操作起来很快)”和“people can build computers into other kinds of machines (人们可以将电脑植入其他种类的机器)”可知，电脑很有用的原因中没有提到它总是变得更小。故选A。 三、补全对话（共5小题，每小题2分，共10分） 根据对话内容，从文后选择恰当的选项补全对话，其中有两项多余。 A: Good morning! Welcome to our science museum. ____25____ B: Yes, please. I want to know more about great inventions. A: Great! This way, please. These are some of the most important inventions in history. B:____26____ A: That's the light bulb. It was invented by Thomas Edison in 1879. B: ____27____Before that, people used candles or oil lamps. A: You’re right. It made people’s life easier at night. B: ____28____ A: It’s the first telephone. It was invented by Alexander Graham Bell. B: Can we try using it? A:____29____But you can listen to the introduction about how it works. B: Okay, thank you. A．What’s that over there? B．How does it work? C．It’s really a useful invention. D．Can I help you? E．What about that one? F．Sorry, you can’t. G．Who invented it? 【答案】25．D 26．A 27．C 28．E 29．F 【导语】本文是一段游客在科学博物馆参观的对话，对话双方围绕重要发明（如电灯、电话）的名称、发明者、用途和互动体验等内容展开交流。 25．根据答语“Yes, please. I want to know more about great inventions. (是的，我想了解更多关于伟大发明的知识。)”可知，此处应是工作人员主动提供帮助，选项D“我能帮你吗？”符合语境。故选D。 26．根据答语“That’s the light bulb. It was invented by Thomas Edison in 1879. (那是电灯，由托马斯・爱迪生在 1879 年发明。)”可知，此处应是询问展品是什么，选项A“那边那个是什么？”符合语境。故选A。 27．根据答语“You’re right. It made people’s life easier at night. (你说得对，它让人们的夜晚生活更便捷。)”及前文“Before that, people used candles or oil lamps. (在那之前，人们用蜡烛或油灯。)” 可知，此处应是对电灯实用性的评价，选项C“这真是一项有用的发明。”符合语境。故选C。 28．根据答语“It’s the first telephone. It was invented by Alexander Graham Bell. (那是第一部电话，由亚历山大・格雷厄姆・贝尔发明。)”可知，此处应是询问另一件展品，选项E“那一个呢？”符合语境。故选E。 29．根据问句“Can we try using it? (我们能试着用一下吗？）” 和答语“But you can listen to the introduction about how it works. (但你可以听关于它工作原理的介绍。)”可知，此处应是拒绝试玩的请求，选项F“抱歉，你不能。”符合语境。故选F。 四、翻译（共5题，每小题4分，共20分） 30．A good beginning is half done. _______________________________________________________________________________ 【答案】好的开始是成功的一半。 【详解】考查主系表结构。分析句子可知，“A good beginning”是主语，意为“一个良好的开端”；“is”是系动词，意为“是”，用于连接主语和表语；“half done”是表语，意为“完成了一半”。故本句译为：好的开始是成功的一半。 31．I am doubtful about what he said for his frequent lies. _______________________________________________________________________________ 【答案】我怀疑他所说的话，因为他经常说谎。 【详解】考查宾语从句。I：我，人称代词作主语；am doubtful about：对……表示怀疑，am是be动词，与doubtful构成系表结构作谓语；what he said：他所说的，是一个宾语从句；for his frequent lies：因为他经常说谎，介词短语作原因状语。故本句译为：我怀疑他所说的话，因为他经常说谎。 32．Turn off the power before checking the electrical equipment. _______________________________________________________________________________ 【答案】在检查电气设备之前，请先关闭电源。 【详解】考查祈使句。Turn off：关掉，作谓语； the power：电源，宾语；before checking the electrical equipment：在检查电气设备之前，时间状语。故本句译为：在检查电气设备之前，请先关闭电源。 33．The factory ________ electric fencing. 工厂有电网围着。 【答案】is surrounded by 【详解】考查动词短语。“被……包围”短语为“be surrounded by”，主语“The factory”为第三人称单数，故be动词用“is”。故填is surrounded by。 34．A family break ________ together with your family. 一次家庭休假使你和家人共度宝贵时光。 【答案】allows you to spend precious time 【详解】考查动词短语、时态和非谓语动词。“使某人做某事”短语为“allow sb to do sth”，根据句意可知，描述的是现实情况，用一般现在时，主语是第三人称单数，所以动词allow用第三人称单数形式allows；“共度宝贵时光”短语为“spend precious time together”。故答案为allows you to spend precious time。 五、书面表达（20分） 35．假定你是李华，你的新西兰朋友Terry在中国学习。他来邮件询问你们学校举办的“科技展”活动情况。请回复邮件，内容包括： 1.科技展的时间和地点； 2.科技展的内容和意义； 3.发出邀请。 注意： 1.词数：80-100左右； 2.可以适当增加细节，以使行文连贯。 参考词汇：科技展 Science and Technology Exhibition Dear Terry, ___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Yours, Li Hua 【答案】例文： Dear Terry, I’m so delighted to receive your letter. I am writing to tell you the details of the “Science and Technology Exhibition” to be held by my school from July 18 to August 15, 2024, in the science building. The exhibition, which includes several themes such as AI and VR, features a new collection of science books and videos. Not only can visitors enjoy a variety of inventions, such as robot models, 3D printers, etc., but they can also experience the 9D Virtual Reality chair. The activity is of great significance. Therefore, I sincerely invite you to participate in it. Should you need any further information, please don’t hesitate to contact me. Yours,   Li Hua 【导语】本文是一篇应用文，要求考生向新西兰朋友Terry介绍“科技展”活动情况。 【详解】1.词汇积累 高兴的：delighted→ pleased 展览：exhibition→ display 主题：themes→ subjects 重要性：significance→ importance 2.句式拓展 简单句变复合句 原句： I am writing to tell you the details of the “Science and Technology Exhibition” to be held by my school from July 18 to August 15, 2024, in the science building. 拓展句：I am writing to tell you the details of the “Science and Technology Exhibition” , which will be held by my school from July 18 to August 15, 2024, in the science building. 【点睛】【高分句型1】The exhibition, which includes several themes such as AI and VR, features a new collection of science books and videos. (运用which引导的非限制性定语从句) 【高分句型2】Not only can visitors enjoy a variety of inventions, such as robot models, 3D printers, etc., but they can also experience the 9D Virtual Reality chair. (运用not only … but also的句子结构) 学科网（北京）股份有限公司 ( 1 )原创精品资源学科网独家享有版权，侵权必究！ 学科网（北京）股份有限公司 $ 编写说明：本套试卷紧扣《英语 基础模块2》（高教版第三版）教材，以教材单元为基准精准覆盖核心考点。 每个单元设置AB卷，A卷为基础巩固卷，侧重基础考点训练，帮助学生扎实掌握知识要点；B卷为能力提升卷，注重知识整合与全面检测，引导学生构建知识网络。全书设计4份综合测试卷，模拟实战情境，聚焦解题能力突破，全面提升应试能力与知识应用水平。 《英语 基础模块2》（高教版第三版）《单元过关卷》 Unit 7 Invention and Innovation （A卷·基础巩固） 考试时间：90分钟 满分：100分 班级 姓名 学号 成绩 一、单项选择（共15小题，每小题2分，共30分） 从每小题所给的四个选项中，选出一个可以填入空白处的最佳选项。 1．—______ is the programs, etc. used to operate a computer. —OK. I understand. A．Software B．Technology C．Information D．Internet 2．—Confucius is a great thinker. His words still have a great ________ on millions of people around the world today. —That’s true. His words are always educational. A．meaning B．effect C．impression D．opinion 3．Time waits for no man, but some people won’t ________ the importance of time until it’s gone. A．realize B．remember C．doubt D．suggest 4．Can he write with one hand and draw with the other ________? A．at same time B．in the same time C．on the time D．at the same time 5．Mary can sing well, ________ she can play many musical instruments. A．but B．and C．or D．because 6．Many traditional jobs are disappearing, ________ new jobs are appearing. A．but B．so C．or D．for 7．The view from the top of Mount Lu is amazing, ________ it draws many tourists every year. A．when B．if C．so D．but 8．We should stop climate change, ________ the earth will become worse and worse. A．so B．because C．but D．or 9．Ding Feng is an ancient book restorer (修复师) at Nanjing Library. He thinks a good restorer should leave fewer restoring marks, ________ the book will live hundreds of years longer. A．until B．and C．when D．or 10．Mary can sing well, ________ she can play many musical instruments. A．but B．and C．or D．because 11．—How do you feel about growing up? —It’s not easy, ________ it’s meaningful. A．and B．but C．so D．or 12．Many traditional jobs are disappearing, ________ new jobs are appearing. A．but B．so C．or D．for 13．Martha helped me a lot, ________ I want to send her a thank-you card. A．or B．but C．so D．and 14．—What’s your favorite outdoor activity? —________ A．I like reading books. B．I enjoy playing basketball. C．I love playing chess. D．I often do some cleaning. 15．—The invention of self-driving is seen as a great development in life. — ___________ A．I’m afraid not. B．No problem. C．You are welcome. D．I couldn’t agree more. 第二节 语言应用（共5题，每小题2分，共10分） 根据图片所提供的信息，从三个选项中选出可以填入空白处的最佳选项。 16．From the picture, which is the earliest chatting tool? A．Kaokao Talk B．Line and WeChat C．WhatsApp 17．Which of the following inventions is Not in Ancient China? A．Paper-making. B．Printing. C．High-speed railway. 18．According to the picture, which is the RIGHT meaning of the word “typography”? A．An instrument giving directions B．A kind of skill of making paper. C．Printing. 19．The sweeping robot can be controlled by ________. A．ECOVACS B．efficient and safe machine C．APP and voice 20．What will you do first when you send an e-mail? A．You should log in first. B．You should check in first. C．You should log out first. 二、阅读理解（共4小题，每小题2.5分，共10分） 阅读下列短文，根据短文内容从每小题所给的四个选项中，选出一个最佳选项。 Man has many interesting inventions since the beginning of time. One of the most important inventions is the computer. It has changed all our lives. People built the first computer in Harvard University (佛大学) in 1944. It was as large as a room and quite difficult and slow to operate (操作). But since the invention of the silicon chip (硅片), computer has become smaller, easier to use, and faster to operate. Some computers are as small as TV sets. People can make computer smaller than a book. And computers are getting smaller all the time. Why is the computer useful to us? First, it can keep a lot of news and messages. Second, the computer can operate very fast — thousands of times faster than a man, and it will not be tired. Third, people can build computers into other kinds of machines, like radios, cars and planes. Computers can do a lot of work for us. Soon, almost everyone will use some kinds of computers. This invention will change the lives of all of us. 21．What was the first computer like? A．It was quick to operate. B．It was easy to handle. C．It was as large as a room. D．It became small. 22．How long is the history of computers? A．forty-four years. B．forty-five years. C．fifty years. D．more than sixty years. 23．The computer has become smaller and easier to use because of the invention of _________. A．many kinds of machines B．the silicon chip C．numbers and words D．cars and radios 24．The computer is useful for the following reasons except _______. A．it is getting small all the time B．it can keep lots of messages and news C．it can operate very fast D．it can be built into other machines 三、补全对话（共5小题，每小题2分，共10分） 根据对话内容，从文后选择恰当的选项补全对话，其中有两项多余。 A: Good morning! Welcome to our science museum. ____25____ B: Yes, please. I want to know more about great inventions. A: Great! This way, please. These are some of the most important inventions in history. B:____26____ A: That's the light bulb. It was invented by Thomas Edison in 1879. B: ____27____Before that, people used candles or oil lamps. A: You’re right. It made people’s life easier at night. B: ____28____ A: It’s the first telephone. It was invented by Alexander Graham Bell. B: Can we try using it? A:____29____But you can listen to the introduction about how it works. B: Okay, thank you. A．What’s that over there? B．How does it work? C．It’s really a useful invention. D．Can I help you? E．What about that one? F．Sorry, you can’t. G．Who invented it? 四、翻译（共5题，每小题4分，共20分） 30．A good beginning is half done. _______________________________________________________________________________ 31．I am doubtful about what he said for his frequent lies. _______________________________________________________________________________ 32．Turn off the power before checking the electrical equipment. _______________________________________________________________________________ 33．The factory ________ electric fencing. 工厂有电网围着。 34．A family break ________ together with your family. 一次家庭休假使你和家人共度宝贵时光。 五、书面表达（20分） 35．假定你是李华，你的新西兰朋友Terry在中国学习。他来邮件询问你们学校举办的“科技展”活动情况。请回复邮件，内容包括： 1.科技展的时间和地点； 2.科技展的内容和意义； 3.发出邀请。 注意： 1.词数：80-100左右； 2.可以适当增加细节，以使行文连贯。 参考词汇：科技展 Science and Technology Exhibition Dear Terry, ___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Yours, Li Hua 学科网（北京）股份有限公司 ( 1 )原创精品资源学科网独家享有版权，侵权必究！ 学科网（北京）股份有限公司 $