Unit 8 Imagine that!单元核心单词,词性转换,短语,语法,句型精练-2025-2026学年八年级英语下册单元练习（沪教版）

**基本信息** 本试卷为初中英语Unit 8“Imagine that!”单元复习卷，通过单词变形、短语翻译、句型应用及科幻主题短文填空，全面覆盖单元核心语言知识，适配基础巩固与语言能力提升需求，体现语言能力与思维品质培养。 **题型特征** |题型|题量/分值|知识覆盖|命题特色| |----|-----------|----------|----------| |单词适当形式填空|20题/20分|动词时态（如1题go→goes）、词性转换（如5题success→successful）|聚焦语法基础，考查词形变化规则| |汉语提示写单词|10题/10分|核心词汇（如21题Whether、23题promise）|强化词汇记忆与拼写准确性| |完成句子|10题/30分|固定搭配（如31题in fear）、句型结构（如34题likely to replace）|注重语言表达应用，衔接单元主题| |短文填空|10题/40分|语法（如41题help→helps）、上下文理解（科幻主题文本）|创设科幻情境，融合词汇、语法与语篇能力，培养想象力与思维品质|

班级 姓名 学号 分数 Unit 8 Imagine that! 单元重点单词变形短语语法句型精练 （时间：60分钟，满分：100分） 单元知识点习题训练 1、 用括号内所给单词的适当形式填空(本大题共20小题，每小题1分，共20分) 1．As time ________ (go) by, I realize the value of friendship. 【答案】goes 【详解】句意：随着时间的流逝，我意识到友谊的价值。go by“（时间）流逝”，动词短语；句子为as“随着”引导的时间状语从句，从句时态为一般现在时，主语time为不可数名词，动词用第三人称单数goes。 2．She is the ________ (manage) of the hotel and takes good care of everything. 【答案】manager 【详解】句意：她是这家酒店的经理，并且把一切都打理得很好。此处需要一个名词，在句中作表语。根据中文提示“经理”及括号内动词“manage”，应用动词变名词规则，故填manager。 3．He failed ________ (attend) the meeting because of the traffic jam. 【答案】to attend 【详解】句意：他因为交通堵塞没能参加会议。fail为动词，其固定用法为fail to do sth.，表示“未能做某事”，因此此处需用所给动词attend的不定式形式to attend。 4．It is important for us to be ________ (responsibility) for our own actions. 【答案】responsible 【详解】句意：对我们来说，为自己的行为负责是很重要的。be动词后接形容词作表语，responsibility为名词，其形容词形式为responsible，be responsible for是固定搭配，意为“对……负责”。 5．She wants to be a ________ (success) writer in the future. 【答案】successful 【详解】句意：她将来想成为一名成功的作家。此处需要形容词修饰名词writer，名词success的形容词形式是successful，表示“成功的”，符合句子语法及语境。 6．She suggested ________ (organize) a class meeting to discuss the problem. 【答案】organizing 【详解】句意：她建议组织一次班会来讨论这个问题。根据“suggested”以及提示可知，此处指的是“建议做某事”，英语是suggest doing sth，空格应用动名词形式作宾语，故填organizing。 7．The girl is ________ (curiosity) about the new robot in the museum. 【答案】curious 【详解】句意：这个女孩对博物馆里的新机器人感到好奇。curiosity意为“好奇心”，是名词。此处为系表结构，应用形容词curious作表语，表示“好奇的”，且与about构成固定搭配be curious about。故填curious。 8．The next day, they ________ (tell) their parents about the strange creatures. 【答案】told 【详解】句意：第二天，他们把那些奇怪的生物告诉了他们的父母。根据时间状语 “The next day” 可知，动作发生在过去，应用一般过去时。主语 “they” 为复数，括号内动词 “tell” 的过去式为 “told”。 9．The children ________ (be) frightened. 【答案】were 【详解】句意：孩子们很害怕。原句中主语The children是复数，句子为一般过去时，结合提示词be，需用其过去式were。 10．Tom’s eyes widened with a ________ look as he heard footsteps behind him in the quiet hallway, his body frozen, unsure whether to turn around or keep walking. (frighten) 【答案】frightened 【详解】句意：当汤姆在安静的走廊里听到身后有脚步声时，他的眼睛因恐惧而瞪大，身体僵住了，不知道是该转身还是继续往前走。此处需要一个形容词来修饰名词look。frighten是动词，其形容词有frightening和frightened。frightening常用来形容事物“令人害怕的”；frightened常用来形容人“感到害怕的”。这里描述Tom的神情，是指他感到害怕的神情，所以用frightened。 11．After the earthquake, many people donated money and ________ (supply) to help the victims (受害者). 【答案】supplies 【详解】句意：地震发生后，许多人捐款和物资以帮助受害者。根据“donated money and...”以及所给单词可知，应填supply“物资”的复数形式supplies，表示救灾的各类物资。 12．Don’t wait for Tim. He won’t ________ (probable) come today. 【答案】probably 【详解】句意：别等蒂姆了，他今天可能不会来。修饰动词“come”必须用副词，形容词probable的副词形式是probably“可能”。 13．The whales are one of the biggest _________ (creature) alive. 【答案】creatures 【详解】句意：鲸鱼是现存最大的生物之一。“one of + the + 形容词最高级 + 可数名词复数”是固定结构，“creature”的复数形式是“creatures”，故填“creatures”。 14．My bike is ________ (break). Could you lend me yours, please? 【答案】broken 【详解】句意：我的自行车坏了。你能把你的借给我吗？根据“Could you lend me yours”可知，因为我的自行车坏了，所以要借你的，“break”的形容词为“broken”，意为“坏的”。 15．They also talk about whether they can move ________(free) in space. 【答案】freely 【详解】本句中“move”是关键词，为实义动词，需用副词修饰。free是形容词，意为“自由的”，变副词直接加-ly，因此填freely表示“自由地、随意地”。 16．In the story, time is called the ________ (four) dimension of space. 【答案】fourth 【详解】句意：在这个故事里，时间被称为空间的第四维度。 four是基数词，根据句意需要用序数词形式修饰名词dimension，four的序数词为fourth，表示“第四”的顺序含义。 17．The book mentions a great science fiction ________ (invent)—the time machine. 【答案】invention 【详解】句意：这本书提到了一项了不起的科幻发明——时光机。不定冠词a后需要接可数名词单数，invent为动词，意为“发明”，其名词形式是在词尾加ion，变为invention，表示“发明”。 18．The story is ________ (real) interesting. 【答案】really 【详解】句意：这个故事真的很有趣。此处需要副词修饰形容词“interesting”，“real”对应的副词是“really”（真正地），符合语境。故填really。 19．Can you ________ (simple) the question for me? 【答案】simplify 【详解】句意：你能为我简化这个问题吗？can是情态动词，后接动词原形，simple“简单的”，是形容词，其动词是simplify“简化”。故填simplify。 20．She is known for her ________ (imagine) design. 【答案】imaginative 【详解】句意：她以富有想象力的设计而闻名。imagine“想象”，动词。此处需要形容词修饰名词“design”，表示“富有想象力的”，imagine的形容词形式是“imaginative”。故填imaginative。 二、根据汉语提示完成单词(本大题共10小题，每小题1分，共10分) 21．________ (是否) you are a history lover or not, the Palace Museum is a must-visit. 【答案】Whether 【详解】句意：无论你是否是历史爱好者，故宫博物院都是必游之地。句中有or not，固定搭配whether...or not表示“是否，无论是否”，位于句首首字母需大写，Whether符合句意。 22．It’s a dangerous ________ (冒险) to climb the mountain in such bad weather. 【答案】venture 【详解】句意：在如此恶劣的天气里爬山是一次危险的冒险。“冒险”可译为venture，为可数名词。a dangerous venture意为“一次危险的冒险”。 23．He made a ________ (承诺) that he would help me with my English. 【答案】promise 【详解】句意：他承诺会帮我学习英语。“承诺”对应的英文是promise，句中不定冠词a后需接可数名词单数形式。 24．The ________ (对手) in the competition is very strong, so we must practice hard. 【答案】opponent 【详解】句意：比赛中的对手实力很强，所以我们必须努力练习。“对手”对应的英文是opponent，句中be动词为is，提示主语需用可数名词单数。 25．We should take part in the ________ (选举) to choose our class monitor. 【答案】election 【详解】句意：我们应该参加选举来选择我们的班长。此处需要一个名词，在介词“in”后作宾语。election“选举”，可数名词。“take part in the...”此处表示参加特定的选举，故填单数名词election。 26．The ________ (主席) of the club will give a welcome speech to new members. 【答案】chairperson 【详解】句意：俱乐部的主席将向新成员致欢迎辞。“主席”可译为chairperson，为可数名词。the后接单数名词，表示特指。 27．He is a ________ (有责任的) boy and always finishes his work carefully. 【答案】responsible 【详解】句意：他是一个有责任心的男孩，总是认真完成他的工作。根据“a”及“boy”提示，需填形容词作定语。“有责任的”为形容词responsible。 28．The first ________ (任务) for us is to finish the homework on time. 【答案】task 【详解】句意：我们的首要任务是按时完成作业。“任务”对应的英文是task，句中be动词为is，提示主语需用可数名词单数。 29．It is going to rain ________ (今晚), so don’t forget to take an umbrella. 【答案】tonight 【详解】句意：今晚要下雨了，所以别忘了带伞。tonight意为“今晚”，时间状语。 30．I can’t stand the noise anymore. It drives me ________ (疯狂的). 【答案】crazy 【详解】句意：我再也受不了这噪音了，它快把我逼疯了。“drive sb. + 形容词”表示“使某人处于某种状态”，“疯狂的”对应的英文形容词是“crazy”，故填“crazy”。 三、完成句子(本大题共10小题，每小题3分，共30分) 31．他们在恐惧中逃跑了，因为那个怪物看起来很丑陋。 They ran away ________ ________ because the monster looked ugly. 【答案】 in fear 【详解】原句中“在恐惧中”是关键词，对应的英文固定短语是in fear，故填in；fear。 32．因为天气不好，宇宙飞船没能按时发射。 The spaceship failed to launch on time ________ ________ the bad weather. 【答案】 because of 【详解】原句关键词“因为”。because of是固定短语，后接名词或者动名词作宾语，the bad weather作介词of的宾语。故填because；of。 33．这部电影引人深思，它讲述了人类的命运。 The film is ________, and it is about human ________. 【答案】 thought-provoking destiny/fate 【详解】根据句意，第一空应为形容词。引人深思的：thought-provoking；第二空意为“命运”，可以翻译为destiny/fate。故填thought-provoking；destiny/fate。 34．机器人在未来极有可能会取代人类做危险的工作。 Robots are very ________ ________ ________ humans in doing dangerous jobs in the future. 【答案】 likely to replace 【详解】原句的关键词是“极有可能会取代”，be likely to do“极有可能做某事”，“取代”表示为“replace”，用原形。 35．很多年轻人想要创业实现自己的梦想。 Many young people want to ________ ________ ________ to realize their dreams. 【答案】 start a business 【详解】原句中“创业”是关键词，表示“创业”的动词短语是start a business。want to后接动词原形start。 36．汤姆缺席了昨天的会议，所以他不知道这个决定。 Tom ________ ________ ________ the meeting yesterday, so he didn’t know about the decision. 【答案】 was absent from 【详解】原句中“缺席了”是关键词，表示“缺席……”的英文固定短语是 be absent from；句中时间状语yesterday提示句子为一般过去时，主语Tom是第三人称单数，be动词用was。 37．我们应该对自己的行为负责。 We should ________ ________ ________ our own behaviors. 【答案】 be responsible for 【详解】原句中“对……负责”是关键词，“对……负责”这一短语的英文表达。在英语中，“对……负责”常用“be responsible for”来表示。原句“我们应该对自己的行为负责”，“应该”用“should”，“should”后接动词原形，所以“be responsible for”中的“be”用原形。因此，三个空依次应填入“be”“responsible”“for”。 38．我们若想突破这种限制，或许可以尝试加速时间进程。 If we want to break through this limitation, we may try to __________ ________ the progression of time. 【答案】 speed up 【详解】原句中“加速”是关键词，表示“加速”的短语是speed up，try to后接动词原形。 39．以现在的技术，我们完全不能实现真正的时间旅行。 With today’s technology, we ________ realize real time travel ________. 【答案】 can’t at all 【详解】本句中“完全不能”是关键词，表示“完全不能”的结构是can’t...at all。本句为一般现在时，情态动词can’t后接动词原形realize，at all用于否定句末尾加强语气，意为“根本、完全”。 40．我们应该以正确的方式处理问题。 We should ____________ problems in the right way. 【答案】deal with 【详解】对比中英文提示可知，空处表示“处理”，用“deal with”表示，该短语常与“should”等情态动词连用，且“should”后接动词原形。 四、短文填空(本大题共10小题，每小题4分，共40分) 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。 Imagination is the key to the future. It 41 (help) us create new things and think of new ideas. For thousands of years, people 42 (use) their imagination to make the world better. Many great inventions started with a simple idea. 43 (imagine) is not only for artists but also for scientists. Without imagination, we would not have computers, smartphones or even robots. Today, many teenagers are interested 44 inventing new things. They take classes, do experiments and try 45 (make) their dreams come true. Some people think it is impossible 46 (live) on other planets, but many scientists are working on it. They believe that imagination can make the 47 (possible) become reality. China’s space programme is also a good example of 48 (imagine) and hard work. As students, we should develop our imagination and 49 (create). We should read more, think more and never be afraid 50 trying new things. 【答案】 41．helps 42．have used 43．Imagination 44．in 45．to make 46．to live 47．impossible 48．imagination 49．creativity 50．of 【导语】本文是一篇议论文，主要论述了想象力对于创造发明、科学发展以及个人成长的重要性，鼓励学生培养想象力和创造力。 41．句意：它帮助我们创造新事物并思考新想法。句子缺少谓语动词，主语It是单数第三人称，且描述一般事实，应用一般现在时。help“帮助”的第三人称单数形式是helps。故填helps。 42．句意：几千年来，人们一直运用想象力让世界变得更美好。时间状语For thousands of years表示从过去持续至今的动作，谓语动词需用现在完成时“have/has+过去分词”结构。主语people是复数，助动词用have，use的过去分词是used。故填have used。 43．句意：想象力不仅属于艺术家，也属于科学家。此处作句子的主语，需用名词形式。imagine“想象”的名词形式是imagination“想象力”，首字母大写。故填Imagination。 44．句意：如今，许多青少年对发明新事物感兴趣。be interested in…“对……感兴趣”是动词短语，in是介词。故填in。 45．句意：他们上课、做实验，并努力让梦想成真。try to do sth.“努力做某事”是动词短语。make“使”需用其不定式形式to make。故填to make。 46．句意：有些人认为在其他星球上生活是不可能的。it是形式主语，真正的主语是“在其他星球上生活”，需用动词不定式结构。It is + adj. + to do sth.是常用句型。live“生活”需用其不定式形式to live。故填to live。 47．句意：他们相信想象力可以让不可能变为现实。make sth. + adj.“使某物……”是动词短语，此处形容词作宾语。possible“可能的”的否定形式是impossible“不可能的”，指代“不可能的事情”这一抽象概念。故填impossible。 48．句意：中国的太空计划也是想象力和努力工作的一个好例子。介词of后需接名词作宾语。imagine“想象”的名词形式是imagination“想象力”。故填imagination。 49．句意：作为学生，我们应该发展我们的想象力和创造力。and连接两个并列的宾语，前文imagination是名词，此处也需用名词形式。create“创造”的名词形式是creativity“创造力”。故填creativity。 50．句意：我们应该多读书、多思考，并且永远不要害怕尝试新事物。be afraid of doing sth.“害怕做某事”是动词短语。故填of。 要求：阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。 Science fiction has always been a source of wonder and imagination. It allows us to explore possible futures and ask deep questions about 51 (we) existence. Many great writers have contributed to this genre. Jules Verne, a French author, is often 52 (call) the “Father of Science Fiction”. His stories were full of inventions that seemed impossible at the time 53 later became reality. Isaac Asimov, an American writer, was known for his scientific accuracy. His Foundation series 54 (influence) generations of writers since the 1950s. In China, Liu Cixin has become a leading voice in science fiction. His novel The Three-Body Problem won the Hugo Award in 2015, 55 (make) him world-famous. His works deal with the destiny of humanity and the universe. Sometimes science fiction feels very real, as in the story of Tina and Tom. The two children saw 56 alien spaceship crash in the forest. They were frightened and ran away. Later, they told their parents, 57 refused to believe them. But at the end of the story, the children spread 58 (they) wings and flew to school. This surprising ending suggests that perhaps the children themselves were not from Earth. Time travel is another popular theme in science fiction. In H.G. Wells’ The Time Machine, the Time Traveller argues that time is the fourth dimension. He believes that humans can move in time just 59 they move in space. Although others think it is nonsense, the idea 60 time travel continues to fascinate us. 【答案】 51．our 52．called 53．but 54．has influenced 55．making 56．an 57．who 58．their 59．as 60．of 【导语】本文是一篇说明文。文章介绍了科幻小说的魅力与意义，通过Jules Verne、Isaac Asimov、刘慈欣等作家的例子，展现了科幻文学对未来的想象与对现实的影响，并探讨了时间旅行等经典主题。 51．句意：它让我们探索可能的未来，并对我们自身的存在提出深刻的问题。修饰名词“existence”，需要用we的形容词性物主代词our“我们的”。故填our。 52．句意：法国作家Jules Verne常被称为“科幻小说之父”。分析句子结构和语义可知，主语“Jules Verne”与动词call为被动关系，结合空格前“is”，这里是一般现在时的被动语态，即is called“被称为”。故填called。 53．句意：他的故事里充满了当时看似不可能的发明，但后来都变成了现实。前半句“inventions that seemed impossible at the time”与后半句“later became reality”为转折关系，即“看似不可能”与“成了现实”是相反、转折的关系，应用连词but。故填but。 54．句意：自20世纪50年代以来，他的《基地》系列影响了一代又一代作家。“since the 1950s”是现在完成时的标志，主语“series”视为单数，助动词用has，动词influence的过去分词为influenced。故填has influenced。 55．句意：他的小说《三体》在2015年获得了雨果奖，使他闻名世界。句子的谓语为“won”，这里应用现在分词作结果状语，表示“获奖”这件事带来的自然结果。故填making。 56．句意：这两个孩子看到一艘外星飞船在森林里坠毁。“alien”以元音音素开头，用不定冠词an表示“一艘外星飞船”。故填an。 57．句意：后来，他们告诉了父母，但父母拒绝相信他们。非限制性定语从句，先行词是“parents”，用who指代人，且在从句中作主语。故填who。 58．句意：但在故事的结尾，孩子们展开了他们的翅膀，飞向了学校。修饰名词“wings”，应用they的形容词性物主代词their“他们的”，在句中作定语。故填their。 59．句意：他认为人类可以在时间中移动，就像他们在空间中移动一样。just as“正如，就像”，固定搭配。故填as。 60．句意：尽管别人认为这很荒谬，但关于时间旅行的想法仍然让我们着迷。the idea of...“……的想法”，固定搭配。故填of。 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 $ 班级 姓名 学号 分数 Unit 8 Imagine that! 单元重点单词变形短语语法句型精练 （时间：60分钟，满分：100分） 单元知识点习题训练 1、 用括号内所给单词的适当形式填空(本大题共20小题，每小题1分，共20分) 1．As time ________ (go) by, I realize the value of friendship. 2．She is the ________ (manage) of the hotel and takes good care of everything. 3．He failed ________ (attend) the meeting because of the traffic jam. 4．It is important for us to be ________ (responsibility) for our own actions. 5．She wants to be a ________ (success) writer in the future. 6．She suggested ________ (organize) a class meeting to discuss the problem. 7．The girl is ________ (curiosity) about the new robot in the museum. 8．The next day, they ________ (tell) their parents about the strange creatures. 9．The children ________ (be) frightened. 10．Tom’s eyes widened with a ________ look as he heard footsteps behind him in the quiet hallway, his body frozen, unsure whether to turn around or keep walking. (frighten) 11．After the earthquake, many people donated money and ________ (supply) to help the victims (受害者). 12．Don’t wait for Tim. He won’t ________ (probable) come today. 13．The whales are one of the biggest _________ (creature) alive. 14．My bike is ________ (break). Could you lend me yours, please? 15．They also talk about whether they can move ________(free) in space. 16．In the story, time is called the ________ (four) dimension of space. 17．The book mentions a great science fiction ________ (invent)—the time machine. 18．The story is ________ (real) interesting. 19．Can you ________ (simple) the question for me? 20．She is known for her ________ (imagine) design. 二、根据汉语提示完成单词(本大题共10小题，每小题1分，共10分) 21．________ (是否) you are a history lover or not, the Palace Museum is a must-visit. 22．It’s a dangerous ________ (冒险) to climb the mountain in such bad weather. 23．He made a ________ (承诺) that he would help me with my English. 24．The ________ (对手) in the competition is very strong, so we must practice hard. 25．We should take part in the ________ (选举) to choose our class monitor. 26．The ________ (主席) of the club will give a welcome speech to new members. 27．He is a ________ (有责任的) boy and always finishes his work carefully. 28．The first ________ (任务) for us is to finish the homework on time. 29．It is going to rain ________ (今晚), so don’t forget to take an umbrella. 30．I can’t stand the noise anymore. It drives me ________ (疯狂的). 三、完成句子(本大题共10小题，每小题3分，共30分) 31．他们在恐惧中逃跑了，因为那个怪物看起来很丑陋。 They ran away ________ ________ because the monster looked ugly. 32．因为天气不好，宇宙飞船没能按时发射。 The spaceship failed to launch on time ________ ________ the bad weather. 33．这部电影引人深思，它讲述了人类的命运。 The film is ________, and it is about human ________. 34．机器人在未来极有可能会取代人类做危险的工作。 Robots are very ________ ________ ________ humans in doing dangerous jobs in the future. 35．很多年轻人想要创业实现自己的梦想。 Many young people want to ________ ________ ________ to realize their dreams. 36．汤姆缺席了昨天的会议，所以他不知道这个决定。 Tom ________ ________ ________ the meeting yesterday, so he didn’t know about the decision. 37．我们应该对自己的行为负责。 We should ________ ________ ________ our own behaviors. 38．我们若想突破这种限制，或许可以尝试加速时间进程。 If we want to break through this limitation, we may try to __________ ________ the progression of time. 39．以现在的技术，我们完全不能实现真正的时间旅行。 With today’s technology, we ________ realize real time travel ________. 40．我们应该以正确的方式处理问题。 We should ____________ problems in the right way. 四、短文填空(本大题共10小题，每小题4分，共40分) 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。 Imagination is the key to the future. It 41 (help) us create new things and think of new ideas. For thousands of years, people 42 (use) their imagination to make the world better. Many great inventions started with a simple idea. 43 (imagine) is not only for artists but also for scientists. Without imagination, we would not have computers, smartphones or even robots. Today, many teenagers are interested 44 inventing new things. They take classes, do experiments and try 45 (make) their dreams come true. Some people think it is impossible 46 (live) on other planets, but many scientists are working on it. They believe that imagination can make the 47 (possible) become reality. China’s space programme is also a good example of 48 (imagine) and hard work. As students, we should develop our imagination and 49 (create). We should read more, think more and never be afraid 50 trying new things. 要求：阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。 Science fiction has always been a source of wonder and imagination. It allows us to explore possible futures and ask deep questions about 51 (we) existence. Many great writers have contributed to this genre. Jules Verne, a French author, is often 52 (call) the “Father of Science Fiction”. His stories were full of inventions that seemed impossible at the time 53 later became reality. Isaac Asimov, an American writer, was known for his scientific accuracy. His Foundation series 54 (influence) generations of writers since the 1950s. In China, Liu Cixin has become a leading voice in science fiction. His novel The Three-Body Problem won the Hugo Award in 2015, 55 (make) him world-famous. His works deal with the destiny of humanity and the universe. Sometimes science fiction feels very real, as in the story of Tina and Tom. The two children saw 56 alien spaceship crash in the forest. They were frightened and ran away. Later, they told their parents, 57 refused to believe them. But at the end of the story, the children spread 58 (they) wings and flew to school. This surprising ending suggests that perhaps the children themselves were not from Earth. Time travel is another popular theme in science fiction. In H.G. Wells’ The Time Machine, the Time Traveller argues that time is the fourth dimension. He believes that humans can move in time just 59 they move in space. Although others think it is nonsense, the idea 60 time travel continues to fascinate us. 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 $