Unit 8 Green Earth（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 8 Green Earth （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．A bowl of hot soup can ________ us from the winter cold. A．protect B．make C．choose D．learn 【答案】A 【详解】句意：一碗热汤可以保护我们免受冬天的寒冷。 protect保护；make制作；choose选择；learn学习。根据句意和搭配“protect...from...（保护……免受……）”可知，热汤能保护我们不受寒冷侵袭。应填protect。 2．To improve the ocean ______, many countries have made laws to stop people from throwing rubbish into the sea these years. A．situation B．pollution C．action D．invention 【答案】B 【详解】句意：为了改善海洋污染，许多国家近年来已制定法律阻止人们向海里扔垃圾。 考查名词辨析。situation情况；pollution污染；action行动；invention发明。根据后半句“many countries have made laws to stop people from throwing rubbish into the sea these years”可知，目的是减少或改善海洋污染，因此应选pollution。故选B。 3．My mother always tells me to save money, not to ________ it. A．waste B．use C．earn D．keep 【答案】A 【详解】句意：我妈妈总是告诉我省钱，不要浪费钱。 考查动词辨析。waste浪费；use使用；earn赚取；keep保存。根据“My mother always tells me to save money, not to...it.”可知，前面提到妈妈说要省钱，后面not表示否定，此处需要选择与“save”语义相反的词，表示“不要浪费钱”。故选A。 4．—Sandy, you can’t eat snacks and do your homework ________. It’s a bad habit. —Sorry, Mom, I won’t do that. A．at the same time B．once in a while C．from time to time D．over and over again 【答案】A 【详解】句意：——桑迪，你不能同时吃零食和做作业。这是个坏习惯。——对不起，妈妈，我不会再那样做了。 考查短语辨析。at the same time同时；once in a while偶尔；from time to time不时；over and over again一遍又一遍。根据“It’s a bad habit.”可知，同时吃零食和做作业是个坏习惯。故选A。 5．It is I ______ to blame for the mistake. A．who am B．who is C．that be D．that is 【答案】A 【详解】句意：这个错误该怪我。 考查强调句和主谓一致。根据句子结构可知，这是一个强调句型：It is+被强调部分+who/that+其他。被强调的是主语I，所以引导词用who或that都可以。但谓语动词要和主语 I 保持一致，必须用am，因此正确答案是who am。故选A。 6．It was yesterday ______ he met his old friend. A．that B．when C．where D．who 【答案】A 【详解】句意：就是在昨天他遇到了他的老朋友。 考查强调句型。that无实际意义，用于强调句；when当……时；where在……地方；who谁。原句为“He met his old friend yesterday.”，若强调时间状语“yesterday”，需用“It was + 被强调部分 + that + 句子剩余部分”的强调结构，此处被强调部分为时间，但连接词仍用that。故选A。 7．It was because of his rich experience ________ he got the job. A．that B．why C．how D．what 【答案】A 【详解】句意：正是因为他丰富的经验，他得到了这份工作。 考查强调句结构。that在强调句中为连接词，无实际意义；why为什么；how如何；what什么。分析句子结构可知，此句为强调句型，其结构为“It is/was+被强调部分+that/who+其他部分”，此句强调的是“because of his rich experience”，为原因状语，所以此处应用that。故选A。 8．________ yesterday afternoon that they completed the project? A．Was it B．It was C．Is it D．It is 【答案】A 【详解】句意：他们是昨天下午完成项目的吗？ 考查强调句的疑问形式。强调句结构为“It is/was+被强调部分+that...”，疑问句需将be动词提前；时间状语“yesterday afternoon”表示过去，故用was。故选A。 9．It is I ______ to blame for the mistake. A．who am B．who is C．that be D．that is 【答案】A 【详解】句意：这个错误该怪我。 考查强调句和主谓一致。根据句子结构可知，这是一个强调句型：It is+被强调部分+who/that+其他。被强调的是主语I，所以引导词用who或that都可以。但谓语动词要和主语 I 保持一致，必须用am，因此正确答案是who am。故选A。 10．It was yesterday ______ he met his old friend. A．that B．when C．where D．who 【答案】A 【详解】句意：就是在昨天他遇到了他的老朋友。 考查强调句型。that无实际意义，用于强调句；when当……时；where在……地方；who谁。原句为“He met his old friend yesterday.”，若强调时间状语“yesterday”，需用“It was + 被强调部分 + that + 句子剩余部分”的强调结构，此处被强调部分为时间，但连接词仍用that。故选A。 11．It was because of his rich experience ________ he got the job. A．that B．why C．how D．what 【答案】A 【详解】句意：正是因为他丰富的经验，他得到了这份工作。 考查强调句结构。that在强调句中为连接词，无实际意义；why为什么；how如何；what什么。分析句子结构可知，此句为强调句型，其结构为“It is/was+被强调部分+that/who+其他部分”，此句强调的是“because of his rich experience”，为原因状语，所以此处应用that。故选A。 12．________ the team finally won the championship after five years of hard work. A．It was in 2023 when B．It was 2023 that C．During 2023 D．It was in 2023 that 【答案】D 【详解】句意：正是在2023年，这支队伍经过五年努力最终赢得了冠军。 考查强调句的用法。强调句的结构为“It is/was + 被强调部分 + that/who + 其他成分”。此处被强调部分为时间状语“in 2023”，必须用“that”。故选D。 13．It was his keys ________ he was looking for everywhere, not his wallet. A．which B．that C．what D．how 【答案】B 【详解】句意：他到处找的是他的钥匙，而不是他的钱包。 考查强调句型。强调句结构为“It is/was+被强调部分+that+其他部分”，此处被强调部分为“his keys”，用that。故选B。 14．—Should we throw away plastic bottles everywhere to make our lives easier? —________ They will pollute oceans and harm sea animals. A．That’s convenient. B．I think so. C．That’s not right. D．It’s up to you. 【答案】C 【详解】句意：——我们应该到处扔塑料瓶来让我们的生活更轻松吗？——那是不对的。它们会污染海洋并伤害海洋动物。 考查情境交际。That’s convenient那很方便；I think so我也这样认为；That’s not right那是不对的；It’s up to you由你决定。根据答语“They will pollute oceans and harm sea animals”可知，说话者认为到处扔塑料瓶是错误的，因此应表示否定态度。故选C。 15．—This year, my family is going to have a green Spring Festival to reduce food waste and air pollution. —________ We want to join you. A．Have fun. B．That’s cool! C．Take it easy. D．What a shame! 【答案】B 【详解】句意：——今年，我家打算过一个绿色的春节，以减少食物浪费和空气污染。——太酷了！我们想加入你们。 考查情景交际用语。Have fun玩得开心；That’s cool太酷了；Take it easy别紧张；What a shame真遗憾。根据“We want to join you.”可知，说话者对对方“绿色春节”的计划表示赞同和欣赏，因此应选择表示积极评价的选项。故选B。 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．What is the main purpose of the sign in the picture? A．To show how cute wild rabbits are on the roadside. B．To introduce the work carried out by National Highways. C．To remind people to deal with garbage properly to protect wildlife. 【答案】C 【详解】句意：图片中这个标识的主要目的是什么？ 根据标识文字“Litter kills 3 million animals a year (垃圾每年导致300万只动物死亡)”和“Bin your litter (把垃圾扔进垃圾桶)”可以推断出，该标识是为了提醒人们妥善处理垃圾，保护野生动物。 17．When is the World Environment Day? A．June 5th. B．May 5th. C．June 6th. 【答案】A 【详解】考查细节理解。句意：世界环境日是什么时候？根据图片中“WORLD ENVIRONMENT DAY JUNE 5 (世界环境日6月5日)”可知，世界环境日是6月5日。故选A。 18．According to the picture, what should we do? A．Drive a car as much as possible. B．Turn off the lights when going out. C．Use new plastic bags when go shopping. 【答案】B 【详解】考查细节理解。句意：根据图片，我们应该做什么？根据图片中“LET’S GO GREEN (让我们走向绿色环保)”可知，我们应践行绿色环保的理念，B选项“出门时关灯”，这是节约用电、践行环保的做法，B选项符合。故选B。 19．This poster tell us that ________. A．We should protect trees. B．We should cut down some trees. C．We should go to the forest on holiday. 【答案】A 【详解】考查细节理解。题意：这张海报告诉我们我们应该保护树木。根据图片中的文字“PROTECT TREES (保护树木)”可知，告诉我们保护树木。故选A。 20．What should we do to help the environment? A．Stop energy. B．Save energy. C．Turn on lights much. 【答案】B 【详解】考查推理判断。句意：我们应该做什么来帮助环境。根据“Lessen your energy consumption to help the environment (减少您的能量消耗以帮助环境)”“TURN OFF YOUR LIGHTS WHEN THEY'RE NOT IN USE (不使用时请关闭电源开关)”可知，可以节省能源来帮助环境。故选B。 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。 It’s easy to protect the planet! These tips help save energy. So get green and give the tips a try. Make sure to ask your parents before trying any of these tips. Keep those fans buzzing in summer instead of turning on the air conditioner. Replace the old light bulbs with energy-saving ones. They last up to ten times longer and use only a quarter of the energy. Turn off your computer before bed each night and before you go out for the day. Also set the computer’s sleep mode when the computer is idle (闲置的) for just a little while. By doing these two simple acts, you will use about 85% less energy each day. Switch off the light every time you leave a room. Place your desk next to a window and use natural light instead of a lamp. Close your curtains to keep out summer heat in daytime or keep in warmth at night in winter. Turn off the TV or video game console (掌上游戏机) and play outside. Ask Mom and Dad to turn off the car engine instead of letting it run idle while waiting for you. Ride a bike or walk instead of using the car. 21．According to the passage, it is better to use ________ to cool yourself off in summer. A．air conditioner B．energy-saving light bulbs C．fans D．ordinary bulbs 22．Where would you sit to do some reading at home if you don’t want to turn on the light? A．In a chair. B．On the bed. C．Behind the door. D．Close to the window. 23．To save energy what had you better do after hours of study? A．Watch TV. B．Play outside. C．Play computer games. D．Read books. 24．The writer seems to agree that we should ________. A．use the car as much as possible B．close curtains to keep warm in winter C．keep the car engine working while waiting for someone D．set the computer’s sleep mode before bed 【答案】21．C 22．D 23．B 24．B 【导语】本文是一篇应用文。文章主要提供了多种简单易行的环保节能小贴士，帮助人们在日常生活中节约能源、保护地球，同时提醒尝试这些建议前需先咨询父母。 21．细节理解题。根据第二段“Keep those fans buzzing in summer instead of turning on the air conditioner. (夏天让风扇转起来，而不是开空调。)”可知，夏天更适合用风扇来降温。故选C。 22．细节理解题。根据第三段“Place your desk next to a window and use natural light instead of a lamp. (把书桌放在窗户旁边，利用自然光而不是台灯。)”可知，若不想开灯读书，应坐在靠近窗户的位置。故选D。 23．细节理解题。根据最后一段“Turn off the TV or video game console and play outside. (关掉电视或掌上游戏机，去外面玩。)”可知，学习数小时后，为节约能源，最好去户外玩耍。故选B。 24．细节理解题。根据第四段“Close your curtains to keep out summer heat in daytime or keep in warmth at night in winter. (白天拉上窗帘阻挡夏日热气，冬天晚上拉上窗帘留住暖气。)”可知，作者认同冬天应拉上窗帘保暖。故选B。 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 “Earth Protection” club. ____25____ B: Yes, please. I want to join your club to help protect the earth. A: Great! First, can you tell me what you know about earth problems? B: Well, I know there are many problems, like ____26____ and deforestation. A: Correct. And what have you done to protect the earth? B: I ____27____ every time I go shopping. I don’t use plastic bags. A: That’s a good habit! Do you have any other ideas for earth protection? B: I think we can ____28____. For example, we can use energy-saving lights at home. A: Excellent! Those are useful ways. Now, fill in this form and you’ll be a member. B: Thank you! I’m so happy to join. A: You’re welcome. ____29____ B: I will! A．Can I help you? B．air pollution C．take my own bag D．save energy E．waste water F．Please keep doing these things G．cut down trees 【答案】25．A 26．B 27．C 28．D 29．F 【导语】这段对话是加入“地球保护”俱乐部的面试，讨论了地球问题和环保行动。 25．根据答语“Yes, please. I want to join your club (是的，我想加入你们的俱乐部)”可知，此处是俱乐部成员询问“是否需要帮助”。选项A“需要帮忙吗？”符合服务场景。故选A。 26．根据前文“earth problems (地球问题)”和后文“deforestation (砍伐森林)”可知，此处需填入另一个环保问题。选项B“空气污染”是常见的地球问题。故选B。 27．根据后文“I don’t use plastic bags (我不用塑料袋)”可知，此处指 “自带袋子”。选项C“自带袋子”符合“不用塑料袋”的替代做法。故选C。 28．根据后文“use energy-saving lights at home (在家用节能灯)”可知，此处指“节约能源”。选项D“节约能源”符合“节能灯”的目的。故选D。 29．根据答语“I will! (我会的!)”可知，此处是提醒“继续做这些环保事”。选项F“请继续做这些事”符合语境。故选F。 四、翻译（共5题，每小题4分，共20分） 30．This smart device was invented by a vocational school student to help with garbage sorting. __________________________________________________ 【答案】这款智能设备是一名职业学校学生发明的，用于帮助垃圾分类。 【详解】考查陈述句和非谓语动词。This smart device：这款智能设备，作主语；was invented：被发明，作谓语，一般过去时的被动语态；by a vocational school student：被一名职业学校学生，介词短语作状语；to help with garbage sorting：用于帮助垃圾分类，动词不定式短语，作目的状语。故本句译为：这款智能设备是一名职业学校学生发明的，用于帮助垃圾分类。 31． He does well in his schoolwork, and at the same time is helpful. __________________________________________________ 【答案】他不仅学业优秀，而且乐于助人。 【详解】考查并列句及固定短语。He does well in his schoolwork：他学业优秀，do well in是固定短语表“在……方面做得好”；and at the same time is helpful：而且乐于助人，and连接并列句，at the same time表“同时、而且”，用于连接并列的内容，helpful意为“乐于助人的”。故本句译为：他不仅学业优秀，而且乐于助人。 32．Shared bikes can be seen on the street everywhere. __________________________________________________ 【答案】共享单车在街上随处可见。 【详解】考查被动语态。Shared bikes：共享单车，名词短语作主语；can be seen：能被看见，是含有情态动词的被动语态结构，作谓语；on the street everywhere：在街上随处，作地点状语。故本句译为：共享单车在街上随处可见。 33．People ________ this movie. 人们对这部电影评价很高。 【答案】think highly of 【详解】考查动词短语。对……评价很高：think highly of。此句描述事实，所以应是一般现在时，主语是复数，动词使用原形。故填think highly of。 34．He likes to ________ together. 他喜欢和朋友们在一起玩。 【答案】play with friends 【详解】考查动词短语。“和……在一起玩”是动词短语“play with”；“朋友们”是复数名词“friends”；空前不定式符号to后接动词原形。故答案为：play with friends。 五、书面表达（20分） 35．当前环境污染越来越严重，我们只有一个地球，地球是我们生存的家园。作为中学生，我们要采取措施保护好我们的地球。请根据下面的提示写一篇关于保护环境的文章。内容包括： 1.原因：树林砍伐、工厂排放废水和废气……（请补充） 2.引起后果：土地沙化，河流污染……（请补充） 3.应对措施：植树、阻止工厂乱排废气和废水……（你的建议，2 — 3条） 注意：词数80 — 120词。 ___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 【答案】例文： As we know, our environment is getting worse and worse. There are many reasons. People cut down too many trees. Factories pour waste water, which has caused some serious problems. For example, the land is sandy, the river is polluted. Also, there are too many cars in the street. What shall we do to save the Earth? To begin with, we should plant more trees and stop factories pouring waste. What’s more, when we go out, we can take buses instead of taking cars. As a student, at school we can use both sides of paper. At home we can also use the used water to water flowers. We only have one Earth, and we should do everything to protect it. 【导语】本篇书面表达属于议论文。作为中学生，我们要呼吁大家保护地球。 【详解】1.词汇积累 废水：waste water→ contaminated water 破坏，砍伐：cut down→ destroy 严重的：serious→ severe 保护：protect→ preserve 2.句式拓展 简单句变复合句 原句：We only have one Earth, and we should do everything to protect it. 拓展句：Because we only have one Earth, we should do everything to protect it. 【点睛】【高分句型1】People cut down too many trees. Factories pour waste water, which has caused some serious problems. (运用了which引导的非限制性定语从句) 【高分句型2】What’s more, when we go out, we can take buses instead of taking cars. (运用了when引导的时间状语从句) 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 8 Green Earth （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．A bowl of hot soup can ________ us from the winter cold. A．protect B．make C．choose D．learn 2．To improve the ocean ______, many countries have made laws to stop people from throwing rubbish into the sea these years. A．situation B．pollution C．action D．invention 3．My mother always tells me to save money, not to ________ it. A．waste B．use C．earn D．keep 4．—Sandy, you can’t eat snacks and do your homework ________. It’s a bad habit. —Sorry, Mom, I won’t do that. A．at the same time B．once in a while C．from time to time D．over and over again 5．It is I ______ to blame for the mistake. A．who am B．who is C．that be D．that is 6．It was yesterday ______ he met his old friend. A．that B．when C．where D．who 7．It was because of his rich experience ________ he got the job. A．that B．why C．how D．what 8．________ yesterday afternoon that they completed the project? A．Was it B．It was C．Is it D．It is 9．It is I ______ to blame for the mistake. A．who am B．who is C．that be D．that is 10．It was yesterday ______ he met his old friend. A．that B．when C．where D．who 11．It was because of his rich experience ________ he got the job. A．that B．why C．how D．what 12．________ the team finally won the championship after five years of hard work. A．It was in 2023 when B．It was 2023 that C．During 2023 D．It was in 2023 that 13．It was his keys ________ he was looking for everywhere, not his wallet. A．which B．that C．what D．how 14．—Should we throw away plastic bottles everywhere to make our lives easier? —________ They will pollute oceans and harm sea animals. A．That’s convenient. B．I think so. C．That’s not right. D．It’s up to you. 15．—This year, my family is going to have a green Spring Festival to reduce food waste and air pollution. —________ We want to join you. A．Have fun. B．That’s cool! C．Take it easy. D．What a shame! 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．What is the main purpose of the sign in the picture? A．To show how cute wild rabbits are on the roadside. B．To introduce the work carried out by National Highways. C．To remind people to deal with garbage properly to protect wildlife. 17．When is the World Environment Day? A．June 5th. B．May 5th. C．June 6th. 18．According to the picture, what should we do? A．Drive a car as much as possible. B．Turn off the lights when going out. C．Use new plastic bags when go shopping. 19．This poster tell us that ________. A．We should protect trees. B．We should cut down some trees. C．We should go to the forest on holiday. 20．What should we do to help the environment? A．Stop energy. B．Save energy. C．Turn on lights much. 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。 It’s easy to protect the planet! These tips help save energy. So get green and give the tips a try. Make sure to ask your parents before trying any of these tips. Keep those fans buzzing in summer instead of turning on the air conditioner. Replace the old light bulbs with energy-saving ones. They last up to ten times longer and use only a quarter of the energy. Turn off your computer before bed each night and before you go out for the day. Also set the computer’s sleep mode when the computer is idle (闲置的) for just a little while. By doing these two simple acts, you will use about 85% less energy each day. Switch off the light every time you leave a room. Place your desk next to a window and use natural light instead of a lamp. Close your curtains to keep out summer heat in daytime or keep in warmth at night in winter. Turn off the TV or video game console (掌上游戏机) and play outside. Ask Mom and Dad to turn off the car engine instead of letting it run idle while waiting for you. Ride a bike or walk instead of using the car. 21．According to the passage, it is better to use ________ to cool yourself off in summer. A．air conditioner B．energy-saving light bulbs C．fans D．ordinary bulbs 22．Where would you sit to do some reading at home if you don’t want to turn on the light? A．In a chair. B．On the bed. C．Behind the door. D．Close to the window. 23．To save energy what had you better do after hours of study? A．Watch TV. B．Play outside. C．Play computer games. D．Read books. 24．The writer seems to agree that we should ________. A．use the car as much as possible B．close curtains to keep warm in winter C．keep the car engine working while waiting for someone D．set the computer’s sleep mode before bed 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 “Earth Protection” club. ____25____ B: Yes, please. I want to join your club to help protect the earth. A: Great! First, can you tell me what you know about earth problems? B: Well, I know there are many problems, like ____26____ and deforestation. A: Correct. And what have you done to protect the earth? B: I ____27____ every time I go shopping. I don’t use plastic bags. A: That’s a good habit! Do you have any other ideas for earth protection? B: I think we can ____28____. For example, we can use energy-saving lights at home. A: Excellent! Those are useful ways. Now, fill in this form and you’ll be a member. B: Thank you! I’m so happy to join. A: You’re welcome. ____29____ B: I will! A．Can I help you? B．air pollution C．take my own bag D．save energy E．waste water F．Please keep doing these things G．cut down trees 四、翻译（共5题，每小题4分，共20分） 30．This smart device was invented by a vocational school student to help with garbage sorting. __________________________________________________ 31． He does well in his schoolwork, and at the same time is helpful. __________________________________________________ 32．Shared bikes can be seen on the street everywhere. __________________________________________________ 33．People ________ this movie. 人们对这部电影评价很高。 34．He likes to ________ together. 他喜欢和朋友们在一起玩。 五、书面表达（20分） 35．当前环境污染越来越严重，我们只有一个地球，地球是我们生存的家园。作为中学生，我们要采取措施保护好我们的地球。请根据下面的提示写一篇关于保护环境的文章。内容包括： 1.原因：树林砍伐、工厂排放废水和废气……（请补充） 2.引起后果：土地沙化，河流污染……（请补充） 3.应对措施：植树、阻止工厂乱排废气和废水……（你的建议，2 — 3条） 注意：词数80 — 120词。 __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 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 $