Unit 7 Reading Mark Twain 单元语法（定语从句）-2026-2027学年九年级英语上册单元练习（新教材沪教版）

**基本信息** 聚焦定语从句核心知识，融合AI、张桂梅等时代热点与杜甫、《朗读者》等文化素材，适配初中英语Unit 7单元复习，助力语言能力与思维品质提升。 **题型特征** |题型|题量/分值|知识覆盖|命题特色| |----|-----------|----------|----------| |单项选择|30题60分|关系代词who/which/that用法及省略规则|以“AI技术”“国家英雄”等情境设题，考查先行词指代及成分分析，强化语言理解能力| |完成句子|10题40分|合并句子、汉译英等综合应用|结合“科学研究”“音乐风格”等主题，要求运用定语从句整合信息，提升语言表达与思维逻辑性|

学校:___________姓名：___________班级：___________考号：___________ Unit 7 Reading Mark Twain 定语从句 （时间：60分钟，满分：100分） 定语从句基本概念与结构 项目 核心内容 示例 定义 修饰名词或代词（即先行词）的从句，相当于形容词的作用，常翻译为 “…… 的” This is the book that I bought yesterday.（这是我昨天买的那本书。） 三大要素 1. 先行词：被定语从句修饰的名词 / 代词 2. 关系词：连接主句和从句的词（分为关系代词、关系副词） 3. 定语从句：修饰先行词的句子部分 句中： - 先行词：the book - 关系词：that - 定语从句：I bought yesterday 位置规律 通常紧跟在先行词之后，避免歧义 错误：I saw a girl in the park who wears a red dress. 正确：I saw a girl who wears a red dress in the park. 关系代词的用法（重点） 关系代词 指代对象 在句中成分 可省略情况 示例 who 人（主格） 主语 不可省略 The boy who is talking is my brother.（正在说话的男孩是我弟弟。） which 物 / 事 主语、宾语 作宾语时可省略 1. The pen which is on the desk is mine.（桌子上的那支笔是我的。） 2. This is the song which I like best.（这是我最喜欢的歌。） that 人 / 物 / 事 主语、宾语 作宾语时可省略 1. The man that helped me is a doctor.（帮我的那个人是医生。） 2. The story that she told is interesting.（她讲的故事很有趣。） 一、单项选择(本大题共30小题，每小题2分，共60分) 1．The book ________ I borrowed from the library is about AI and robots. A．who B．whose C．whom D．which 【答案】D 【详解】句意：我从图书馆借的那本书是关于人工智能和机器人的。 who谁；whose谁的；whom谁（宾格）；which哪个（指物）。分析句子结构可知，空处引导定语从句修饰先行词“The book”，先行词指物且在从句中作宾语，应用关系代词which或that。 2．In difficult times, there are always national heroes ________ step up and bring people hope. A．where B．who C．which D．whose 【答案】B 【详解】句意：在困难时期，总有民族英雄站出来给人们带来希望。 where哪里；who谁；which哪一个；whose谁的。空处是定语从句的关系词，先行词是national heroes，指人，关系词在从句中作主语，因此用关系代词who引导定语从句。故选用who。 3．The film ________ we watched last weekend is very educational. A．which B．who C．what 【答案】A 【详解】句意：我们上周末看的那部电影很有教育意义。 which哪一个，指物；who谁，指人；what什么。先行词The film指物，且关系词在从句中作watched的宾语，需用which或that引导定语从句。应填which。 4．Du Fu is a great Chinese poet ________ has become popular with many people around the world. A．which B．whom C．who D．whose 【答案】C 【详解】句意：杜甫是一位伟大的中国诗人，他受到世界各地许多人的欢迎。 which哪一个；whom宾格，谁；who主格，谁；whose谁的。句中poet是先行词，表示“人”，所以此处使用who或whom引导定语从句，由于引导词在从句中作主语，所以此处使用who引导定语从句。 5．They talked about the teachers and the schools ________ they had visited. A．where B．which C．that 【答案】C 【详解】句意：他们谈论了他们之前拜访过的老师和学校。 where哪里；which哪一个；that那个。先行词是“the teachers and the schools”，既有人又有物，在定语从句中，当先行词既有人又有物时，关系代词只能用that。 6．This is the book ________ my mother bought for me last week. A．who B．whom C．which D．whose 【答案】C 【详解】句意：这是我妈妈上周给我买的那本书。 who谁；whom谁(宾格)；which 哪个(指物)；whose谁的。分析句子结构，先行词是“the book”，指物，关系词在从句中作宾语，应使用which引导该从句。 7．—Where is the School English Speech Contest going to be held tonight? —I’m not sure. Is it in the hall ________ can hold 300 people? A．that B．where C．what D．when 【答案】A 【详解】句意：——学校英语演讲比赛今晚将在哪里举行？——我不确定。是在能容纳300人的大厅里吗？ that引导定语从句时，在从句中可作主语或宾语；where引导定语从句时，在从句中作地点状语；what不能引导定语从句；when引导定语从句时，在从句中作时间状语。根据句子结构可知，该句为定语从句，先行词“the hall”指物，且从句中缺少主语，用关系代词that。 8．I’ll never forget the days ________ we spent together five years ago. A．which B．when C．where D．how 【答案】A 【详解】句意：我永远不会忘记五年前我们一起度过的日子。 考查定语从句。根据“the days...we spent together five years ago”可知，这是一个定语从句，先行词是“the days”，表示物，在从句中作“spent”的宾语，因此要用关系代词“which”来引导定语从句。故选A。 9．Mr. Smith has just given us a speech ________ was about developing reading skills. A．which B．what C．whom D．who 【答案】A 【详解】句意：史密斯先生刚刚给我们做了一个关于培养阅读技巧的演讲。 考查定语从句。which哪一个，指代物；what什么，不引导定语从句；whom谁，宾格，指代人；who谁，主格，指代人。先行词speech指物，因此选择关系代词which引导定语从句，在从句中作主语，指代speech。故选A。 10．Nowadays, AI is one of the most important technologies ________ are widely used in our life. A．that B．which C．who D．what 【答案】A 【详解】句意：如今，人工智能是我们生活中广泛使用的最重要的技术之一。 考查定语从句。that那个，先行词指人或物；which哪一个，先行词指物；who谁，先行词指人；what什么，不引导定语从句。分析句子结构可知，空处引导定语从句，先行词为“technologies”，且有“the most important”最高级修饰，此时不能用which，要用that。故选A。 11．China is the first nation ________ landed a spacecraft (太空飞行器) on the far side of the moon. A．which B．who C．/ D．that 【答案】D 【详解】句意：中国是第一个在月球背面着陆太空飞行器的国家。 which指物；who指人；/省略；that指人或物。先行词“nation”被序数词“the first”修饰，关系代词应用that。 12．Harbin Ice and Snow World ________ started in 1999 has long been a business card for the city. It makes the city special and brings in many visitors every year. A．what B．where C．who D．that 【答案】D 【详解】句意：1999年开业的哈尔滨冰雪大世界长期以来都是这座城市的一张名片，它让这座城市变得特别，每年都吸引着许多游客。 what不能引导定语从句；where是关系副词，在从句中作地点状语，此处先行词是事物，不匹配；who指代人，先行词Harbin Ice and Snow World是事物，不符合；that是关系代词，可以指代事物，在定语从句中作主语，符合句子结构。结合定语从句的用法，此处选用that。 13．—Who is the man over there? —He is a famous singer ________ is very popular with young people. A．which B．whom C．that D．whose 【答案】C 【详解】句意：—那边那个人是谁？—他是一位在年轻人中非常受欢迎的著名歌手。 which指物；whom指人（宾格），作宾语；that既可指人也可指物且可作主语；whose谁的，后需接名词。分析句子可知，先行词是a famous singer，指人，关系词在从句中作主语。 14．—The teacher ________ we met yesterday ________ very kind to us. —I agree. She is one of the best teachers in our school. A．whom; is B．who; are C．which; was 【答案】A 【详解】句意：——我们昨天遇到的那位老师对我们非常好。——我同意，她是我们学校最好的老师之一。 第一空先行词The teacher指代人，且在定语从句“we met yesterday”中作met的宾语，可用关系代词whom/who，选项中whom符合要求；第二空句子主语The teacher是单数，描述人物的性格特质用一般现在时，be动词用is。who; are中are和单数主语不匹配，which不能指代人且was时态不符合语境，因此正确选项为whom; is。 15．This is the factory ________ we visited last summer. A．where B．that C．what 【答案】B 【详解】句意：这就是我们去年夏天参观过的那家工厂。 where哪里；that那个；what什么。先行词是the factory，指物，且关系词在从句中作visited的宾语，应用关系代词that或which。 16．China is getting better at making the most popular high-tech products ________ can be bought in all parts of the world. A．that B．which C．/ 【答案】A 【详解】句意：中国越来越擅长制造世界各地都能买到的最受欢迎的高科技产品。 考查定语从句关系代词的用法。that关系代词；which关系代词；/省略关系代词。当先行词被形容词最高级（如 the most popular）修饰时，通常用that引导定语从句。本句中，先行词 high-tech products被形容词最高级the most popular修饰，且关系代词在从句中作主语，不能省略。故选A。 17．Ms. Li is a good teacher ________ is skilled in encouraging her students. A．that B．whose C．what D．which 【答案】A 【详解】句意：李老师是一位擅长鼓励学生的好老师。 that关系代词；whose关系代词；what疑问代词；which关系代词。先行词是teacher，指人，且在定语从句中作主语，应用关系代词that引导。 18．This old photo makes me ________ the people and things ________ we met at college. A．think about; that B．think of; which C．think of; that D．think about; which 【答案】C 【详解】句意：这张旧照片让我想起了我们在大学遇到的人和事。 think of想起，think about考虑。根据“This old photo”可知是照片引发回忆，第一空应填think of，排除A、D。第二空引导定语从句，先行词“the people and things”既有人又有物，关系代词只能用that，不能用which，排除B。 19．—Have you heard of the “National Excellent Teacher”—Zhang Guimei? —Sure. She’s a great teacher ________ sent the girls in poor villages into the universities. A．which B．who C．whose 【答案】B 【详解】句意：——你听说过“全国优秀教师”张桂梅吗？——当然。她是一位伟大的老师，她把贫困山区的女孩送进了大学。 which指物；who指人；whose指所属关系。先行词是“teacher”，指人，且在从句中作主语，故用who引导定语从句。 20．—Do you like the weekly talk show, The Reader, on CCTV? —Sure. It’s a great TV program ________ brings the habit of reading back to the public. A．who B．what C．that 【答案】C 【详解】句意：——你喜欢中央电视台每周一次的谈话节目《朗读者》吗？——当然。它是一个把阅读习惯带回大众身边的很棒的电视节目。 who谁（指人）；what什么（不引导定语从句）；that那（指人或物）。先行词是program，指物，从句中缺少主语，应用that或which 引导。应填that。 21．He is a personal friend ________ I’ve known for many years. I completely trust him. A．whose B．each C．this D．whom 【答案】D 【详解】句意：他是我认识很多年的私人朋友。我完全信任他。 whose谁的；each每个；this这个；whom谁。根据句子结构，句子是定语从句，先行词是friend，指人，且在从句中作known的宾语，应用whom。 22．—I feel so nervous. What should I do? —You’d better listen to music that ________. A．helps you relax B．you can dance C．makes you sad D．you feel safe 【答案】A 【详解】句意：——我感到很紧张。我该怎么办？——你最好听有助于你放松的音乐。 根据问句“I feel so nervous.”可知对方感到紧张，建议应舒缓情绪。选项A“helps you relax”意为“帮你放松”，符合语境，且that在从句中作主语，结构完整。 23．—Do you know the man ________ is talking with our teacher? —Yes, he is our new math teacher. A．which B．who C．whom D．whose 【答案】B 【详解】句意：——你认识正在和我们老师说话的那个人吗？——认识，他是我们的新数学老师。 which哪一个，指代物；who谁，指代人，在从句中作主语或宾语；whom谁，指代人，在从句中作宾语；whose谁的，表示所属关系。分析句子结构可知，这是一个定语从句，先行词是“the man”，指代人，且在从句中作主语，所以应该用who来引导。 24．—The woman ________ we met yesterday is our new Chinese teacher. —Really? She looks young and energetic. A．what B．whose C．who D．which 【答案】C 【详解】句意：——我们昨天遇见的那位女士是我们新的语文老师。——真的吗？她看起来年轻且充满活力。 what什么；whose谁的；who谁；which哪一个。先行词是“The woman”，指人，关系代词在定语从句中作met的宾语，指人应用 who/whom/that，结合选项只有who符合。 25．I’ll never forget the lesson ______ I learned last year. A．that B．who C．what D．whom 【答案】A 【详解】句意：我永远不会忘记去年学到的教训。 考查定语从句。that引导定语从句时，可在从句中作主语或宾语，指代人或物；who引导定语从句时，在从句中作主语或宾语，指代人；what不能引导定语从句；whom引导定语从句时，在从句中作宾语，指代人。根据“…I learned last year”是定语从句，修饰先行词“the lesson”，且从句中缺少宾语，所以应用关系代词that引导该定语从句。故选A。 26．She didn’t forget anything ________ her mother had told her to buy. A．whom B．which C．that D．who 【答案】C 【详解】句意：她没有忘记妈妈让她买的任何东西。 考查定语从句关系代词。whom在定语从句中指代人，作宾语；which指代物，作主语或宾语；that既可指人也可以指物，当先行词是不定代词（如anything）时，关系代词只能用that；who指代人，作主语。根据“anything...her mother had told her to buy”可知，此处先行词是不定代词“anything”，且在从句中作“buy”的宾语，故关系代词用that。故选C。 27．Wechat is a useful APP ________ can help people talk to friends and share photos freely. A．/ B．who C．that D．whose 【答案】C 【详解】句意：微信是一个有用的APP，可以帮助人们自由地与朋友交谈和分享照片。 考查定语从句。题干中的“APP”是先行词，指物，在从句中作主语，因此用“that”或“which”均可，故选C。 28．I prefer the music ________ is quiet and gentle. A．who B．that C．what D．whose 【答案】B 【详解】句意：我更喜欢安静而轻柔的音乐。 考查定语从句。分析句子，可知该句是定语从句，先行词是“music”，当先行词是物时连接词可以用that或者which，故选B。 29．Michael wants to be an astronaut like Yang Liwei ________ is the first Chinese astronaut to step in space. A．who B．whose C．which D．where 【答案】A 【详解】句意：迈克尔想成为像杨利伟那样的宇航员，杨利伟是第一个进入太空的中国宇航员。 考查定语从句。who谁；whose谁的；which哪一个；where在哪里。分析句子可知，先行词“Yang Liwei”指人，且在从句中作主语，关系词应用who。故选A。 30．Have you ever heard of the news ______ is about the Strawberry Concert? A．who B．when C．what D．which 【答案】D 【详解】句意：你听说了那则关于草莓音乐会的新闻了吗？ 考查定语从句的关系词。who谁；when什么时候；what什么；which哪一个。本题先行词是news，且定语从句缺少主语，因此只能选用关系代词，只有which符合题意。故选D。 二、完成句子(本大题共10小题，每小题4分，共40分) 31．The violin is old. It was made many years ago. (用which合并句子) ________________________________________________________________ 【答案】The violin which was made many years ago is old. 【详解】句意：这把小提琴很古老。它是许多年前制作的。用which合并句子，第一句的主语The violin和第二句的主语It指代同一事物。先行词是物violin，且题目要求用which，因此用which替换第二句中的It引导定语从句。将定语从句which was made many years ago紧跟在先行词The violin之后，主句的系表结构is old放在从句后面。 32．This is a song. The song mixes pop and folk styles. (用that合并句子) ________________________________________________________________ 【答案】This is a song that mixes pop and folk styles. 【详解】句意：这是一首融合了流行和民谣风格的歌曲。第一句为This is a song，第二句为The song mixes pop and folk styles，两句中都有song，因此将第二句作为定语从句修饰先行词song。关系代词that在从句中作主语，代替the song，直接接谓语mixes，其余部分保持不变。 33．The boy is a gifted player. He plays the trumpet. (用who合并句子) ________________________________________________________________ 【答案】The boy who plays the trumpet is a gifted player. 【详解】句意：这个男孩是一名有天赋的演奏者，他吹小号。本题考查who引导的定语从句，先行词为the boy（人），关系代词who指代人，在从句中作主语，可替换原句的人称代词He；将“He plays the trumpet”转化为定语从句“who plays the trumpet”，紧跟先行词the boy后，剩余主句部分为“is a gifted player”。 34．I love soft music. It has true feelings. (用which合并句子) ________________________________________________________________ 【答案】I love soft music which has true feelings. 【详解】句意：我喜欢轻音乐，它拥有真实的情感。本题考查which引导的定语从句，先行词为soft music（事物，单数），关系代词which指代事物，在从句中作主语，替换原句代词It；将“It has true feelings”转化为定语从句“which has true feelings”，紧跟先行词soft music后，主句“I love soft music”保留不变。 35．我想成为一名研究生物体的科学家。 I want to be a scientist ________ ________ living things. 【答案】 who studies 【详解】原句关键词“研究……的”，在句中作定语，使用定语从句；先行词“scientist”是单数，指人，因此第一空填入引导词who，第二空谓语动词“研究”对应study的第三人称单数形式studies。 36．This relay race is full of fun. We take part in it.（用which合并） _________________________________________ 【答案】This relay race which we take part in is full of fun. 【详解】句意：这场接力赛充满乐趣。我们参加了它。原句中“This relay race”是指代事物的单数先行词，可用关系代词which引导定语从句，which在从句内作介词in的宾语，替换原句代词“it”，从句“which we take part in”修饰先行词“This relay race”，主句谓语动词搭配单数主语使用is，故填This relay race which we take part in is full of fun.。 37．这就是我上周读过的那本书。 This is the book ________ I ________ last week. 【答案】 which/that read 【详解】原句中“读过的那本书”是关键词，第一空：先行词是指代事物的the book，在从句里作宾语，可用关系代词that或者which来引导这个定语从句。第二空：句尾的last week（上周）是典型的一般过去时标志，表示“读”的英文为read，其过去式属于不规则变化，形式依然是read。 38．大多数女孩喜欢有幸福结局的浪漫故事。 Most girls love ________ ________ ________ have a happy ending. 【答案】 romantic stories which/that 【详解】原文中“……的浪漫故事”是关键词。“浪漫故事”对应的英文短语是romantic story，由于从句谓语动词是have，所以先行词story需用复数stories，表示物，因此关系代词应用that或which。 39．She is the teacher. She taught us English last year.（合并为一句） She is the teacher ________ ________ us English last year. 【答案】 who taught 【详解】句意：她是老师。她去年教我们英语。先行词teacher指人，引导词在从句中作主语，需用who引导限制性定语从句，因此填who taught。 40．The man is a doctor. I talked to him just now.（合并为一句） The man ________ I ________ to just now is a doctor. 【答案】 who talked 【详解】句意：这个人是一名医生。我刚才和他谈过了。先行词The man指人，引导词在从句中作to的宾语，可填who，动词用talked（过去时）。 试卷第1页，共3页 试卷第1页，共3页 学科网（北京）股份有限公司 $ 学校:___________姓名：___________班级：___________考号：___________ Unit 7 Reading Mark Twain 定语从句 （时间：60分钟，满分：100分） 定语从句基本概念与结构 项目 核心内容 示例 定义 修饰名词或代词（即先行词）的从句，相当于形容词的作用，常翻译为 “…… 的” This is the book that I bought yesterday.（这是我昨天买的那本书。） 三大要素 1. 先行词：被定语从句修饰的名词 / 代词 2. 关系词：连接主句和从句的词（分为关系代词、关系副词） 3. 定语从句：修饰先行词的句子部分 句中： - 先行词：the book - 关系词：that - 定语从句：I bought yesterday 位置规律 通常紧跟在先行词之后，避免歧义 错误：I saw a girl in the park who wears a red dress. 正确：I saw a girl who wears a red dress in the park. 关系代词的用法（重点） 关系代词 指代对象 在句中成分 可省略情况 示例 who 人（主格） 主语 不可省略 The boy who is talking is my brother.（正在说话的男孩是我弟弟。） which 物 / 事 主语、宾语 作宾语时可省略 1. The pen which is on the desk is mine.（桌子上的那支笔是我的。） 2. This is the song which I like best.（这是我最喜欢的歌。） that 人 / 物 / 事 主语、宾语 作宾语时可省略 1. The man that helped me is a doctor.（帮我的那个人是医生。） 2. The story that she told is interesting.（她讲的故事很有趣。） 一、单项选择(本大题共30小题，每小题2分，共60分) 1．The book ________ I borrowed from the library is about AI and robots. A．who B．whose C．whom D．which 2．In difficult times, there are always national heroes ________ step up and bring people hope. A．where B．who C．which D．whose 3．The film ________ we watched last weekend is very educational. A．which B．who C．what 4．Du Fu is a great Chinese poet ________ has become popular with many people around the world. A．which B．whom C．who D．whose 5．They talked about the teachers and the schools ________ they had visited. A．where B．which C．that 6．This is the book ________ my mother bought for me last week. A．who B．whom C．which D．whose 7．—Where is the School English Speech Contest going to be held tonight? —I’m not sure. Is it in the hall ________ can hold 300 people? A．that B．where C．what D．when 8．I’ll never forget the days ________ we spent together five years ago. A．which B．when C．where D．how 9．Mr. Smith has just given us a speech ________ was about developing reading skills. A．which B．what C．whom D．who 10．Nowadays, AI is one of the most important technologies ________ are widely used in our life. A．that B．which C．who D．what 11．China is the first nation ________ landed a spacecraft (太空飞行器) on the far side of the moon. A．which B．who C．/ D．that 12．Harbin Ice and Snow World ________ started in 1999 has long been a business card for the city. It makes the city special and brings in many visitors every year. A．what B．where C．who D．that 13．—Who is the man over there? —He is a famous singer ________ is very popular with young people. A．which B．whom C．that D．whose 14．—The teacher ________ we met yesterday ________ very kind to us. —I agree. She is one of the best teachers in our school. A．whom; is B．who; are C．which; was 15．This is the factory ________ we visited last summer. A．where B．that C．what 16．China is getting better at making the most popular high-tech products ________ can be bought in all parts of the world. A．that B．which C．/ 17．Ms. Li is a good teacher ________ is skilled in encouraging her students. A．that B．whose C．what D．which 18．This old photo makes me ________ the people and things ________ we met at college. A．think about; that B．think of; which C．think of; that D．think about; which 19．—Have you heard of the “National Excellent Teacher”—Zhang Guimei? —Sure. She’s a great teacher ________ sent the girls in poor villages into the universities. A．which B．who C．whose 20．—Do you like the weekly talk show, The Reader, on CCTV? —Sure. It’s a great TV program ________ brings the habit of reading back to the public. A．who B．what C．that 21．He is a personal friend ________ I’ve known for many years. I completely trust him. A．whose B．each C．this D．whom 22．—I feel so nervous. What should I do? —You’d better listen to music that ________. A．helps you relax B．you can dance C．makes you sad D．you feel safe 23．—Do you know the man ________ is talking with our teacher? —Yes, he is our new math teacher. A．which B．who C．whom D．whose 24．—The woman ________ we met yesterday is our new Chinese teacher. —Really? She looks young and energetic. A．what B．whose C．who D．which 25．I’ll never forget the lesson ______ I learned last year. A．that B．who C．what D．whom 26．She didn’t forget anything ________ her mother had told her to buy. A．whom B．which C．that D．who 27．Wechat is a useful APP ________ can help people talk to friends and share photos freely. A．/ B．who C．that D．whose 28．I prefer the music ________ is quiet and gentle. A．who B．that C．what D．whose 29．Michael wants to be an astronaut like Yang Liwei ________ is the first Chinese astronaut to step in space. A．who B．whose C．which D．where 30．Have you ever heard of the news ______ is about the Strawberry Concert? A．who B．when C．what D．which 二、完成句子(本大题共10小题，每小题4分，共40分) 31．The violin is old. It was made many years ago. (用which合并句子) ________________________________________________________________ 32．This is a song. The song mixes pop and folk styles. (用that合并句子) ________________________________________________________________ 33．The boy is a gifted player. He plays the trumpet. (用who合并句子) ________________________________________________________________ 34．I love soft music. It has true feelings. (用which合并句子) ________________________________________________________________ 35．我想成为一名研究生物体的科学家。 I want to be a scientist ________ ________ living things. 36．This relay race is full of fun. We take part in it.（用which合并） _________________________________________ 37．这就是我上周读过的那本书。 This is the book ________ I ________ last week. 38．大多数女孩喜欢有幸福结局的浪漫故事。 Most girls love ________ ________ ________ have a happy ending. 39．She is the teacher. She taught us English last year.（合并为一句） She is the teacher ________ ________ us English last year. 40．The man is a doctor. I talked to him just now.（合并为一句） The man ________ I ________ to just now is a doctor. 试卷第1页，共3页 试卷第1页，共3页 学科网（北京）股份有限公司 $