Unit 1 I Love My Family（B卷·能力提升）《英语 基础模块2》（外研版） 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》（外研版）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。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》（外研版）《单元过关卷》 Unit 1 I Love My Family B卷·能力提升 考试时间：40分钟 满分：100分 班级 姓名 学号 成绩 一、阅读理解（每小题4分，共计40分） 从A、B、C、D四个选项中，选出符合题目要求的最佳选项。 A ①Do you yawn (打哈欠)? There are about 20 reasons that scientists think are possible for yawning after research. They do not know exactly why yawning happens, but they do know many facts about yawning. ②We know that everyone yawns in the same way. First, you open your mouth slowly. Your mouth stays open for about five seconds. You take in a lot of air and then push it out. Then you quickly close your mouth. We also know that yawning is contagious. When you see someone yawn, you yawn, too. ③Many people say they yawn because they are bored or tired. That might be true. People do often yawn before they sleep and after they wake up. However, we know that people also yawn when they are excited or nervous. Olympic runners, for example, often yawn before a race. Why is that? In 2007, scientists found that a yawn can help a warm brain cool down. ④Some scientists believe that yawning makes you notice things more quickly. When you yawn, you breathe deeply. You also stretch (拉伸) the muscles (肌肉) in your face, mouth, and neck. Your eardrums (耳膜) stretch, too. Maybe this helps you to be quicker to notice things. ⑤In some countries, people think yawning is not nice. People put their hands over their mouths to cover a yawn. In other countries, people think yawning is healthy. They think that opening the mouth very wide can let good things in. When they breathe out, they think that bad things go out of the body with the air. ⑥Scientists do not spend much time studying yawning. That is probably because yawning does not hurt. It is just something we do. 根据语篇内容，选择最佳选项。 1．What does the underlined word “contagious” in Paragraph 2 mean? A．有传染性的 B．可呼吸的 C．可改变的 2．Why do Olympic runners often yawn before a race? A．They are too tired or too bored. B．A yawn can let good things in. C．A yawn can help a warm brain cool down. 3．What is the main idea of Paragraph 5? A．Advantages of yawning. B．Disadvantages of yawning. C．Different ideas about yawning. 4．What can we probably infer (推断) from the passage? A．People use different ways to yawn. B．Some scientists think yawning is good for people. C．Scientists will do further research on yawning. 5．What would be the best structure of the passage? A．①/②③④⑤/⑥ B．①/②/③④⑤/⑥ C．①②③④⑤/⑥ 【答案】1.A 2.．C 3.C 4.B 5.A 【导语】本文介绍了科学家对打哈欠的相关研究，包括打哈欠的方式、原因、作用以及不同国家对打哈欠的不同看法。 【解析】1.第二段指出：“When you see someone yawn, you yawn, too.”，说明看到别人打哈欠自己也会打，因此contagious意为“有传染性的”。 2.第三段指出：“Olympic runners, for example, often yawn before a race. Why is that? In 2007, scientists found that a yawn can help a warm brain cool down.”，说明运动员赛前打哈欠是因为打哈欠能给过热的大脑降温。 3.第五段指出：“In some countries, people think yawning is not nice... In other countries, people think yawning is healthy.”，说明不同国家对打哈欠有不同看法。 4.第四段指出：“Some scientists believe that yawning makes you notice things more quickly...Maybe this helps you to be quicker to notice things.”，说明一些科学家认为打哈欠能让人更快注意到事物，对人有好处，由此可推断出一些科学家认为打哈欠对人有益。 5.第一段总述科学家研究出打哈欠约有 20 种可能原因，知晓相关事实；第二、三、四、五段分别介绍打哈欠的方式、原因、作用及不同看法；第六段总结科学家很少研究打哈欠，因为它无害。 B In the world of detective stories, the friendship between Sherlock Holmes and Dr John Watson is one of the most famous. Their partnership shows us what true friendship really means. They first met when they were looking for someone to share a flat with. Watson was an army doctor, just back from the war. Holmes was a strange but brilliant detective. They became roommates at 221B Baker Street. This was the beginning of a great friendship. They were not just flatmates; they became the closest partners. Holmes had a sharp mind for solving crimes, but he was often cold and logical. Watson, on the other hand, was kind and understood people’s feelings. In many cases, Holmes found the clues, but Watson helped him see the human side of the story. Their different personalities made them a perfect team. Watson also wrote down their adventures, which made Holmes famous. Their friendship was not always smooth. At times, Watson felt that Holmes was too secretive. Holmes sometimes thought Watson was too emotional. However, they always trusted and supported each other in dangerous situations. Watson once saved Holmes’ life, and Holmes always knew he could count on his friend. Their story teaches us that friendship is about accepting differences and supporting each other. A real friend can be very different from you, but you complement each other and become stronger together. The friendship between Holmes and Watson is a classic example of this. 6.What does the underlined word “They” in Paragraph 2 refer to? A．Sherlock Holmes and Dr John Watson. B．The detective stories. C．The army doctors. D．The drivers at Baker Street. 7.Which of the following is NOT true about Holmes and Watson? A．They were flatmates at 221B Baker Street. B．They had very similar personalities. C．Watson wrote down their adventures. D．They became the closest partners. 8.What’s the Chinese meaning of the underlined word “logical”? A．感情用事的 B．幽默风趣的 C．逻辑性强的 D．沉默寡言的 9.What does Paragraph 4 mainly tell us? A．Holmes and Watson never had any problems. B．Their friendship had challenges but was strong. C．Watson saved Holmes’ life many times. D．Holmes did not trust Watson. 10.What is the key to their friendship according to the passage? A．Being exactly the same. B．Working on the same cases. C．Living in the same flat. D．Accepting differences and supporting each other. 【答案】6.A 7.B 8.C 9.B 10.D 【导语】本文是一篇说明文，文章主要讲述了福尔摩斯和华生医生之间的友谊。 【解析】6.第二段“They first met when they were looking for someone to share a flat with…They became roommates at 221B Baker Street. This was the beginning of a great friendship”表明福尔摩斯和华生医生第一次见面时都在寻找合租的人，后来他们成了室友，这是他们伟大友谊的开始，所以“They”指代福尔摩斯和华生医生。 7.第三段“Their different personalities made them a perfect team”表明福尔摩斯和华生医生性格不同，B选项“他们性格非常相似”表述错误。 8.第三段“Holmes had a sharp mind for solving crimes, but he was often cold and logical. Watson, on the other hand, was kind and understood people’s feelings”表明福尔摩斯头脑敏锐，善于破案，但他常常很冷漠且“logical”，而华生医生很善良，理解人们的感受，由此可推测出“logical”意思是“逻辑性强的”。 9.第四段“Their friendship was not always smooth…However, they always trusted and supported each other in dangerous situations”表明他们的友谊并不总是一帆风顺，有时华生觉得福尔摩斯太神秘，福尔摩斯有时觉得华生太情绪化，但他们在危险的情况下总是相互信任和支持，所以本段主要告诉我们他们的友谊有挑战但很牢固。 10.最后一段“Their story teaches us that friendship is about accepting differences and supporting each other”表明他们的故事告诉我们友谊就是接受差异并相互支持，所以他们友谊的关键是接受差异并相互支持。 二、完型填空（本大题共15小题，每小题3分，共计45分） 从A、B、C、D四个选项中，选出空白处的最佳选项。 Monty Roberts came from a working family. When he was a school boy, he was asked to write a paper about what he wanted to do when he 11. ______ up. That night he wrote a seven-page paper about his goal of owning a horse ranch (牧场) someday. He wrote about his 12. ______ in great detail (详尽地) and he even drew a picture of a ranch. The next day he handed in his paper to his teacher. Two days later, he got his paper back. On the front page was a large red “F” with a note that read “See me after class”. The boy went to see the teacher after class and asked, “13. ______ did I get an ‘F’? “ The teacher answered, “This is an unrealistic (不切实际的) dream for a young boy like you. Owning a horse ranch needs a lot of money. You have to buy the land. You have to buy horses. There’s no way you can ever do it.” The teacher continued, “If you set 14. ______ goal, I will give you a better grade.” The boy went home and asked his father for advice. His father said, “Look, son, you have to make up your own mind on this. It is a very 15. ______ decision (决定) for you.” In the end, after sitting with it for a week, the boy turned in the same paper making no 16. ______ at all. He said to the teacher, “You can keep the ‘F’ and I will keep my dream.” Many years later, 17. ______ hard work, Monty owned a 200-acre horse farm. Then one day, he met the teacher by accident. The old man said, “18. ______ I was your teacher, I was something of a dream stealer (偷窃者). I stole a lot of kids’ dreams. 19. ______, you had enough courage (勇气) not to give up your dream.” Never let anyone steal your dreams. 20. ______ your heart no matter what holds you back. No dream is too big or too small when one works harder to live it out. And when you stick to your dream, you’ll find that every effort you put in is worthwhile. Once you have a dream, don’t let 21. ______ stop you. You may face difficulties and doubts from others, but 22. ______ you believe in yourself, nothing can stand in your way. Monty’s story tells us that dreams are not just ideas in our minds. They are 23. ______ that can come true with persistence (坚持) and hard work. Many people fail not because their dreams are too big, but because they give up too 24. ______. So, cherish your dreams and keep moving forward. 25. ______ your dream, and it will reward you in the end. 11. A．stayed B．got C．grew D．stood 12. A．paper B．dream C．family D．plan 13. A．How B．When C．Why D．Where 14. A．another B．other C．others D．the other 15. A．easy B．important C．interesting D．difficult 16. A．changes B．checks C．chances D．choices 17. A．in B．for C．through D．with 18. A．When B．Until C．Before D．After 19. A．Suddenly B．Sadly C．Luckily D．Finally 20. A．Fight B．Follow C．Forget D．Find 21. A．something B．anything C．nothing D．everything 22. A．if B．though C．because D．unless 23. A．promises B．hopes C．goals D．wishes 24. A．early B．late C．often D．seldom 25. A．Take B．Bring C．Hold D．Catch 【答案】11. C 12. B 13. C 14. A 15. B 16. A 17. C 18. A 19. C 20. B 21. B 22. A 23. C 24. A 25. C 【导语】本文讲述了出身工薪家庭的蒙蒂・罗伯茨，学生时代便怀揣拥有马场的梦想，并将其写进论文，却因老师认为梦想不切实际而得到 “F” 等级。但蒙蒂没有放弃，始终坚守梦想，最终通过不懈努力拥有了 200 英亩的马场。 【解析】 11. 考查动词短语辨析。句意：当他还是个学生的时候，他被要求写一篇关于他长大后想做什么的论文。A. stayed（停留）；B. got（得到）；C. grew（成长）；D. stood（站立）。固定短语“grow up”意为“长大”，符合“描述未来理想”的语境，故选C。 12. 考查名词辨析。句意：他详细地描述了他的梦想，甚至画了一幅牧场的画。A. paper（论文）；B. dream（梦想）；C. family（家庭）；D. plan（计划）。前文提到“owning a horse ranch someday”是他的目标，即“梦想”，后文也围绕“坚持梦想”展开，故选B。 13. 考查疑问词辨析。句意：男孩下课后去见老师，问道：“为什么我得了‘F’？”A. How（如何）；B. When（何时）；C. Why（为什么）；D. Where（哪里）。根据老师后文解释得“F”的原因可知，男孩是在询问“原因”，故选C。 14. 考查形容词辨析。句意：如果你设定另一个目标，我会给你更好的成绩。A. another（另一个，三者及以上中的一个）；B. other（其他的，后接复数名词）；C. others（其他人/物，代词）；D. the other（两者中的另一个）。此处指“另一个不同的目标”，无明确范围限制，故选A。 15. 考查形容词辨析。句意：这对你来说是一个非常重要的决定。A. easy（容易的）；B. important（重要的）；C. interesting（有趣的）；D. difficult（困难的）。根据“you have to make up your own mind on this”可知，这个决定需要男孩自己做，且关乎梦想，因此“很重要”，故选B。 16. 考查名词辨析。句意：最后，经过一周的考虑，男孩交回了同样的论文，没有做任何修改。A. changes（改变；修改）；B. checks（检查）；C. chances（机会）；D. choices（选择）。根据“the same paper”可知，男孩没有对论文做任何“修改”，故选A。 17. 考查介词辨析。句意：多年后，通过努力工作，蒙蒂拥有了一个200英亩的养马场。A. in（在……里）；B. for（为了）；C. through（通过，凭借）；D. with（和……一起）。“through hard work”表示“通过努力工作”，强调方式，符合“凭借努力实现梦想”的语境，故选C。 18. 考查连词辨析。句意：当我还是你的老师时，我有点像是梦想偷窃者。A. When（当……时）；B. Until（直到……才）；C. Before（在……之前）；D. After（在……之后）。此处引导时间状语从句，指“当老师的那段时间”，故选A。 19. 考查副词辨析。句意：幸运的是，你有足够的勇气不放弃你的梦想。A. Suddenly（突然）；B. Sadly（悲伤地）；C. Luckily（幸运地）；D. Finally（最终）。老师承认自己偷走了很多孩子的梦想，而男孩坚持下来了，这是“幸运的”，故选C。 20. 考查动词辨析。句意：无论什么阻碍你，都要跟随你的心。A. Fight（战斗）；B. Follow（跟随）；C. Forget（忘记）；D. Find（找到）。“Follow your heart”是固定表达，意为“跟随你的心”，契合“坚持梦想”的核心主旨，故选B。 21. 考查不定代词辨析。句意：一旦你有了梦想，不要让任何事情阻止你。A. something（某事，用于肯定句）；B. anything（任何事情，用于否定句/疑问句）；C. nothing（没有事情）；D. everything（所有事情）。句子为否定句，强调“任何事情”都不能阻止，故选B。 22. 考查连词辨析。句意：你可能会面临他人的质疑和困难，但如果你相信自己，没有什么能阻挡你。A. if（如果）；B. though（虽然）；C. because（因为）；D. unless（除非）。此处引导条件状语从句，表“相信自己”的前提下“无阻碍”，故选A。 23. 考查名词辨析。句意：它们是通过坚持和努力就能实现的目标。A. promises（承诺）；B. hopes（希望）；C. goals（目标）；D. wishes（愿望）。梦想是可通过努力实现的“目标”，与前文“his goal of owning a horse ranch”呼应，故选C。 24. 考查副词辨析。句意：很多人失败不是因为梦想太大，而是因为放弃得太早。A. early（早地）；B. late（晚地）；C. often（经常）；D. seldom（很少）。结合语境，“放弃太早”是失败的常见原因，与“坚持”形成对比，故选A。 25. 考查动词辨析。句意：坚持你的梦想，最终它会回报你。A. Take（拿）；B. Bring（带来）；C. Hold（坚持；持有）；D. Catch（抓住）。“Hold your dream”意为“坚持你的梦想”，符合前文“don’t give up your dream”的核心，故选C。 三、书面表达（15分） 假如你是李华，写一篇80词左右的英语短文，分享你的一次家庭故事，体现你对家人的爱与理解。 内容包括： 1. 文体为记叙文； 2. 包括故事背景、具体事件、感悟收获三部分 注意： 1.文中不得出现考生个人真实信息； 2.可适当增加细节，使行文连贯。 _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 【解析】分析过程： 类型：家庭故事（记叙文）。 结构： 1. 开头：点明故事背景（如住校/外出学习初期，渴望独立、忽略家人的关心）； 2. 中间：描述具体事件（如遇到困难、生病、遭遇挫折时家人的陪伴与付出），体现家人的爱与包容； 3. 结尾：表达内心的转变与感恩，说明当下用具体行动回应家人的爱，体现对亲情的理解。 重点词汇翻译 家庭故事：family story 住校：live at school 独立：independence 遇到困难：meet with difficulties 安慰：comfort 照顾：look after 深受感动：be deeply moved 保持联系：keep in touch 表达爱意：show love 珍惜：cherish 范文 My Family Story After I started to live at school, I was happy with the independence and new life. I was busy with lessons and friends, so I seldom called my parents and even thought their daily calls were boring. I just wanted to be free from their constant care. However, things changed when I failed my math exam. I was sad and upset, and I called my mum with tears. She comforted me patiently for a long time, and my dad drove to school the next day, bringing my favourite food and encouraging me not to give up. They stayed with me until I felt better. I was deeply moved by their silent love. Now, I take the initiative to call my parents every night. I share my school life, joys and troubles with them. I know independence is important, but family love is the warmest support in life. I will cherish it forever and show my love to them with every small action in daily life. 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》（外研版）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。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》（外研版）《单元过关卷》 Unit 1 I Love My Family B卷·能力提升 考试时间：40分钟 满分：100分 班级 姓名 学号 成绩 一、阅读理解（每小题4分，共计40分） 从A、B、C、D四个选项中，选出符合题目要求的最佳选项。 A ①Do you yawn (打哈欠)? There are about 20 reasons that scientists think are possible for yawning after research. They do not know exactly why yawning happens, but they do know many facts about yawning. ②We know that everyone yawns in the same way. First, you open your mouth slowly. Your mouth stays open for about five seconds. You take in a lot of air and then push it out. Then you quickly close your mouth. We also know that yawning is contagious. When you see someone yawn, you yawn, too. ③Many people say they yawn because they are bored or tired. That might be true. People do often yawn before they sleep and after they wake up. However, we know that people also yawn when they are excited or nervous. Olympic runners, for example, often yawn before a race. Why is that? In 2007, scientists found that a yawn can help a warm brain cool down. ④Some scientists believe that yawning makes you notice things more quickly. When you yawn, you breathe deeply. You also stretch (拉伸) the muscles (肌肉) in your face, mouth, and neck. Your eardrums (耳膜) stretch, too. Maybe this helps you to be quicker to notice things. ⑤In some countries, people think yawning is not nice. People put their hands over their mouths to cover a yawn. In other countries, people think yawning is healthy. They think that opening the mouth very wide can let good things in. When they breathe out, they think that bad things go out of the body with the air. ⑥Scientists do not spend much time studying yawning. That is probably because yawning does not hurt. It is just something we do. 根据语篇内容，选择最佳选项。 1．What does the underlined word “contagious” in Paragraph 2 mean? A．有传染性的 B．可呼吸的 C．可改变的 2．Why do Olympic runners often yawn before a race? A．They are too tired or too bored. B．A yawn can let good things in. C．A yawn can help a warm brain cool down. 3．What is the main idea of Paragraph 5? A．Advantages of yawning. B．Disadvantages of yawning. C．Different ideas about yawning. 4．What can we probably infer (推断) from the passage? A．People use different ways to yawn. B．Some scientists think yawning is good for people. C．Scientists will do further research on yawning. 5．What would be the best structure of the passage? A．①/②③④⑤/⑥ B．①/②/③④⑤/⑥ C．①②③④⑤/⑥ B In the world of detective stories, the friendship between Sherlock Holmes and Dr John Watson is one of the most famous. Their partnership shows us what true friendship really means. They first met when they were looking for someone to share a flat with. Watson was an army doctor, just back from the war. Holmes was a strange but brilliant detective. They became roommates at 221B Baker Street. This was the beginning of a great friendship. They were not just flatmates; they became the closest partners. Holmes had a sharp mind for solving crimes, but he was often cold and logical. Watson, on the other hand, was kind and understood people’s feelings. In many cases, Holmes found the clues, but Watson helped him see the human side of the story. Their different personalities made them a perfect team. Watson also wrote down their adventures, which made Holmes famous. Their friendship was not always smooth. At times, Watson felt that Holmes was too secretive. Holmes sometimes thought Watson was too emotional. However, they always trusted and supported each other in dangerous situations. Watson once saved Holmes’ life, and Holmes always knew he could count on his friend. Their story teaches us that friendship is about accepting differences and supporting each other. A real friend can be very different from you, but you complement each other and become stronger together. The friendship between Holmes and Watson is a classic example of this. 6.What does the underlined word “They” in Paragraph 2 refer to? A．Sherlock Holmes and Dr John Watson. B．The detective stories. C．The army doctors. D．The drivers at Baker Street. 7.Which of the following is NOT true about Holmes and Watson? A．They were flatmates at 221B Baker Street. B．They had very similar personalities. C．Watson wrote down their adventures. D．They became the closest partners. 8.What’s the Chinese meaning of the underlined word “logical”? A．感情用事的 B．幽默风趣的 C．逻辑性强的 D．沉默寡言的 9.What does Paragraph 4 mainly tell us? A．Holmes and Watson never had any problems. B．Their friendship had challenges but was strong. C．Watson saved Holmes’ life many times. D．Holmes did not trust Watson. 10.What is the key to their friendship according to the passage? A．Being exactly the same. B．Working on the same cases. C．Living in the same flat. D．Accepting differences and supporting each other. 二、完型填空（本大题共15小题，每小题3分，共计45分） 从A、B、C、D四个选项中，选出空白处的最佳选项。 Monty Roberts came from a working family. When he was a school boy, he was asked to write a paper about what he wanted to do when he 11. ______ up. That night he wrote a seven-page paper about his goal of owning a horse ranch (牧场) someday. He wrote about his 12. ______ in great detail (详尽地) and he even drew a picture of a ranch. The next day he handed in his paper to his teacher. Two days later, he got his paper back. On the front page was a large red “F” with a note that read “See me after class”. The boy went to see the teacher after class and asked, “13. ______ did I get an ‘F’? “ The teacher answered, “This is an unrealistic (不切实际的) dream for a young boy like you. Owning a horse ranch needs a lot of money. You have to buy the land. You have to buy horses. There’s no way you can ever do it.” The teacher continued, “If you set 14. ______ goal, I will give you a better grade.” The boy went home and asked his father for advice. His father said, “Look, son, you have to make up your own mind on this. It is a very 15. ______ decision (决定) for you.” In the end, after sitting with it for a week, the boy turned in the same paper making no 16. ______ at all. He said to the teacher, “You can keep the ‘F’ and I will keep my dream.” Many years later, 17. ______ hard work, Monty owned a 200-acre horse farm. Then one day, he met the teacher by accident. The old man said, “18. ______ I was your teacher, I was something of a dream stealer (偷窃者). I stole a lot of kids’ dreams. 19. ______, you had enough courage (勇气) not to give up your dream.” Never let anyone steal your dreams. 20. ______ your heart no matter what holds you back. No dream is too big or too small when one works harder to live it out. And when you stick to your dream, you’ll find that every effort you put in is worthwhile. Once you have a dream, don’t let 21. ______ stop you. You may face difficulties and doubts from others, but 22. ______ you believe in yourself, nothing can stand in your way. Monty’s story tells us that dreams are not just ideas in our minds. They are 23. ______ that can come true with persistence (坚持) and hard work. Many people fail not because their dreams are too big, but because they give up too 24. ______. So, cherish your dreams and keep moving forward. 25. ______ your dream, and it will reward you in the end. 11. A．stayed B．got C．grew D．stood 12. A．paper B．dream C．family D．plan 13. A．How B．When C．Why D．Where 14. A．another B．other C．others D．the other 15. A．easy B．important C．interesting D．difficult 16. A．changes B．checks C．chances D．choices 17. A．in B．for C．through D．with 18. A．When B．Until C．Before D．After 19. A．Suddenly B．Sadly C．Luckily D．Finally 20. A．Fight B．Follow C．Forget D．Find 21. A．something B．anything C．nothing D．everything 22. A．if B．though C．because D．unless 23. A．promises B．hopes C．goals D．wishes 24. A．early B．late C．often D．seldom 25. A．Take B．Bring C．Hold D．Catch 三、书面表达（15分） 假如你是李华，写一篇80词左右的英语短文，分享你的一次家庭故事，体现你对家人的爱与理解。 内容包括： 1. 文体为记叙文； 2. 包括故事背景、具体事件、感悟收获三部分 注意： 1.文中不得出现考生个人真实信息； 2.可适当增加细节，使行文连贯。 _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 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 $