语篇视角下英语高考“七选五”阅读理解试题研究与实战训练 样张20200201
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重难点07 7选5【命题趋势】阅读理解七选五要求从短文后的七个选项中(均为完整的句子)选出五个能填入文章空处的最佳选项,主要考查考生对文章的整体内容和结构以及上下文逻辑意义的理解和掌握。
其命题形式深受英语四六级和考研阅读多项选择题的影响,体现了《新课标》"用英语获取、处理和运用信息的能力;逐步获取用英语思维的能力。
"的阅读学习和教学理念。
该题型命题形式仍然具有客观题的特点,又与完形填空具有异曲同工之妙,只是选项少,以句子形式出现,考查目的和侧重点不完全相同而已。
从《考试说明》对该题型命题目的的表述"主要考查考生对文章的整体内容和结构以及上下文逻辑意义的理解和掌握。
"可以得出以下判断:该题备选项可分为主旨概括句(文章整体内容)、过渡性句子(文章结构)和注释性句子(上下文逻辑意义)三类。
其多余的两个干扰项也往往从这三方面进行设置,例如主旨概括句或过于宽泛或以偏概全或偏离主题,过渡性句子不能反映文章的行文结构,注释性句子与上文脱节等。
文章体裁以说明文为主,语篇模式较为固定:提出问题——提供解决方案。
文章题材较为固定:与学生的日常生活学习紧密相关。
【满分技巧】【解题步骤1】在高考的现场如果考生用大量的时间来彻底读懂文章的意思其实是不现实的,也是没有必要的,我们可以尝试以下四步走。
1.先读文章的开始部分,明确文章的基本话题,然后仔细阅读五个空各自的前后句寻找并画出关键词。
【巧学妙记】(一名(名词)袋(代词)鼠(数次)很特殊(特殊疑问词),连(连词)蹦(动词)带跳很彪(标点/标题)悍。
)2.要对文章中出现的衔接手段保持敏感度。
衔接手段分为三种:词汇衔接、逻辑衔接、结构衔接。
可按这几个原则判断原文的空与选项是否匹配。
3.一旦确定一个选项,就要在该选项上做出标记(例如可以删掉),以避免干扰和分散注意力。
4.将选项代入到文章中重读,依据行文逻辑,再次确定选项。
答题技巧细节类题型解题技巧(词汇的衔接或逻辑的衔接)1.词汇的衔接包括:(1)词汇复现复现,是保证文章前后衔接而经常使用的一种写作手段,即作者在文章上下文不同的位置对同一个概念进行重复描述。
高考英语阅读七选五(附答案)一、考点精要【授之以渔】近年来,高考的阅读明白增加了七选五题型,试题模式为:给出一篇缺少5个句子的文章,对应有七个选项,要求同学们依照文章结构、内容,选出正确的句子,填入相应的空白处。
该题型要紧考查考生对文章的整体内容和结构以及上下文逻辑意义的明白和掌握。
其命题体现了《新课标》“用英语猎取、处理和运用信息的能力;逐步猎取用英语思维的能力。
”的阅读学习和教学理念。
《考试讲明》对该题型命题目的的表述“要紧考查考生对文章的整体内容和结构以及上下文逻辑意义的明白和掌握。
”新题型七选五事实上跟传统题型完形填空有相似之处,完形填空空出的是词,而七选五空出的是句子,然而他们的考察方式基本上一样的,只要考生挑选的答案可以使行文连贯,符合英文的语法以及适应表达就行,所以,这两类题型在做题办法上有共通之处。
二、解题技巧【名师坐堂】从该题型给出的选项中我们能够发觉一些特点:该题型选项大致可分为主旨概括句(文章整体内容)、过渡性句子(文章结构)和注释性句子(上下文逻辑意义)三类。
另外两个多余的干扰项也能够经过这三个特点来排除,例如主旨概括句要么过于宽泛要么以偏概全或偏离主题,过渡性句子别能反映文章的行文结构,注释性句子与上文脱节等。
依照这些,我们总结一些对于七选五的做题办法供大伙儿参考。
1.先看选项。
跟完形填空别一样,七选五的答案选项较少,同时给出的基本上句子,所以,我们能够经过句子的完整性或者句子后面的标点符号来推断该句在文章中的位置。
另外,经过阅读选项,有也许找出跟其他选项表达彻底别接受思的句子,如此的话我们就能够直截了当将该选项排除。
2.通读全文对文章举行快速扫瞄,寻觅主题句,抓住文章结构及文章的写作内容。
在阅读过程中,要注意文章的开始与结束段降,尤其是文章的首段及末段末句,因为“开门见山”与“结尾总结”的写作方式为常见的写作方式,首段的末句普通是全文的主题所在,讲明本文将探讨哪些内容,并简要指出文章的写作思路,有时甚至会以提纲的形式举行呈现。
新题型01 阅读理解七选五阅读理解七选五这个题型要求在一段约300词的短文中留出5个空白,要求考生从短文后的七个选项中(均为完整的句子)选出五个能填入文章空处的最佳选项,其中两项为多余的迷惑选项,主要考查考生对文章的整体内容和结构以及上下文逻辑意义的理解和掌握。
其命题形式深受英语四六级和考研阅读多项选择题的影响,体现了《新课标》"用英语获取、处理和运用信息的能力;逐步获取用英语思维的能力。
"的阅读学习和教学理念。
该题型命题形式仍然具有客观题的特点,又与完形填空具有异曲同工之妙,只是选项少,以句子形式出现,考查目的和侧重点不完全相同而已。
从《考试说明》对该题型命题目的的表述"主要考查考生对文章的整体内容和结构以及上下文逻辑意义的理解和掌握。
"可以得出以下结论:该题备选项可分为主旨概括句(文章整体内容)、过渡性句子(文章结构)和注释性句子(上下文逻辑意义)三类。
其多余的两个干扰项也往往从这三方面进行设置,例如主旨概括句或过于宽泛或以偏概全或偏离主题,过渡性句子不能反映文章的行文结构,注释性句子与上文脱节等。
文章体裁以说明文为主,语篇模式较为固定:提出问题——提供解决方案。
文章题材较为固定:与学生的日常生活、学习紧密相关。
【题型分析】分析篇章结构,把握全篇文脉是阅读填空题解题的关键,英语的语篇通常是由句子和语段构成的,语段是句子和语篇之间的中间层次,句子虽然能够单独地表达相对完整的思想,但是它不能表达多方面的、比较复杂的思想,只有把几个句子结合为较大的言语片段,才能表达一个相对独立的层意,所谓的"积句而成章,积章而成篇。
"就是这个道理。
分析文章的层次包含两种形式:一种是分析整篇文章的层次,也就是段落,另一种是分析每一个段落内部的层次,也就是语篇层次。
语篇与段落是有区别的,语段是篇章结构的中间层次,是由句子到篇的一种过渡形式,段落(paragraph)是在某些语体(如记叙文、议论文)中比语段更大的意义单位,较小的段落可以只包括一个语段或一个句子,一般来说,一个段落通常由几个语段构成。
2020年高考英语阅读选择(七选五)模拟训练(名师押题预测,绝对精品,值得下载练习)第二节(共5小题;每小题2分,满分10分)根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。
We know that choosing a college major can be very hard. But have no fear! Your choice of major will not lock you into a specific career for the rest of your life. Here’s what you need to know about college majors before you commit.What is a major?36 Beyond general college requirements, you’ll also take a group of courses in a subject of your choosing such as Chemistry, Literature, or Political Science.How important is my major?The major you choose will neither predict nor guarantee your future. Many graduates find jobs that have nothing to do with what they studied in college. If you intend to earn a professional degree after college, you will probably need certain courses. 37When do I declare a major?This varies widely across schools and programs. 38 Others require that you declare upon a major by the time that you set foot inside your first class.39Definitely. One of the most exciting aspects of college life is that it introduces you to new subjects and arouses new passions. However, keep this in mind, every major has necessarycoursework. If you change your major late in the game, it may take more than the traditional four years to earn a degree.What are minors and double majors?If one field of study doesn’t satisfy your intellectual appetite, consider a minor. A minor is similar to a major in that it’s an area of academic concentration, 40 A double major provides you with an understanding of two academic fields. It allows you to become familiar with two sets of values and views while it also requires you to fulfill two sets of requirements.A. Can I change my mind?B. Is my major time-consuming?C. It’s your specialized area of study in college.D. Most students find one major is more than enough.E. Some schools may give you one year or more to decide.F. But many future doctors major in non-science related fields.G. The only difference is that it doesn’t r equire as many classes.36~40 CFEAO评分标准:36~40小题,每小题2分。
语篇视角下英语高考“七选五”阅读理解试题研究与实战训练第一部分试题研究与解题指导【试题研究】2015~2017 年英语高考全国卷“七选五”阅读理解试题分析阅读理解是英语高考的一个重要组成部分,为了让广大师生对“七选五”阅读理解这一题型有更加深入地认识,本文对近三年英语高考全国卷“七选五”阅读理解试题进行全面深入地分析。
本解析包括四部分,第一部分是考纲解读,全面解析阅读理解考查要求;第二部分是近三年高考“七选五”阅读理解命题分析,通过对近三年高考阅读理解试题统计分析揭示其命题规律,对未来考查趋势作以预测;第三部分是说明文体和记叙文体在近三年“七选五”阅读理解中的考查情况分析;第四部分是各类文体的文本特征和阅读解题技巧,对各类文体的结构特点作以分析,针对不同文体提出相应的阅读与解题技巧,并指出答题误区。
……二、三年高考“七选五”阅读理解命题解析为了让广大考生对近三年阅读理解试题有一个比较全面地了解,本部分对第第二节的“七选五”阅读理解从主题语境、语篇类型、阅读总量、选项设置等几个方面以表格的形式作以统计,在统计的基础上分析其基本命题规律和命题变化趋势。
1.“七选五”阅读理解试题命题特征统计2.命题基本规律……【注:本文系作者为2018 年《试题调研》阅读专辑(第4 辑)所撰写并发表的特约稿件,有删改】2018、2019 年英语高考全国卷“七选五”阅读理解试题分析随着《普通高中英语课程标准(2017 版)》(以下简称新课标)的颁布,英语高考全国卷的命题依据新课标学业质量要求和高考命题建议在逐渐地发生变化,由对学生综合语言运用能力的考查升级为对学生英语学科核心素养的全面考查。
“七选五”阅读理解作为阅读理解试题中区分度比较大的试题类型,也在继承中发展与创新,越来越注重考查学生理解语篇上下文逻辑关系的能力。
为了让广大师生对新课标颁布以来两年的六套英语高考全国卷中的“七选五”阅读理解试题有一个全面了解,本文通过对试题统计分析以概括出这六份试题的特点和考查趋势,同时也提出对教学的启示和建议,以便广大师生能攻克高考英语“七选五” 阅读理解这一难关。
第1讲细节理解题[小题夯基练]请选择以下设误方式(张冠李戴、无中生有、曲解文意、颠倒是非、正误参半)或正确选项特征(原文原词、同义替换、信息归纳、正话反说)填入下表的“诊断”一栏中。
1.(2018·天津卷阅读C节选)Food productionWith a 3D printer,a cook can print complicated chocolate sculptures and beautiful pieces for decoration on a wedding cake.Not everybody can do that—it takes years of experience,but a printer makes it easy.A restaurant in Spain uses a Foodini to “recreate forms and pieces”of food that are“exactly the same,”freeing cooks to complete other tasks.In another restaurant,all of the dishes and desserts it serves are 3Dprinted,rather than farm to table.Q:What benefit does 3D printing bring to food production?选项诊断A It helps cooks to create new dishes. 曲解文意B It saves time and effort in cooking. 信息归纳C It improves the cooking conditions. 无中生有D It contributes to restaurantdecorations.颠倒是非a great wayto earn merit badges(荣誉徽章).At Space Camp, trainees can earn their Space Exploration badge as they build and fire model rockets, learn about space tasks and try simulated (模拟) flying to space with the crew from all over the world.The Aviation Challenge program gives trainees the chance to earn their Aviation badge.They learn the principles of flight and test their operating skills in the cockpit(驾驶舱)of a variety of flight simulators.Trainees also get a good start on their Wilderness Survival badge as they learn about waterand landsurvival through designed tasks and their search and rescue of a “downed” pilot.Q:To earn a Space Exploration badge, a trainee needs to________.选项诊断A fly to space 正误参半its first professional writer and publisher,famous and beloved,who had led an explosion in both the publication of novels and their readership and whose characters—from Oliver Twist to Tiny Tim—were held up as moral touchstones.Today Dickens' greatness is unchallenged.Removing him from the pantheon(名人堂)of English literature would make about as much sense as the Louvre selling off the Mona Lisa.Q:Dickens is compared with the Mona Lisa in the text to stress________.AFrom the Forbidden City to the Great Wall,ancient Chinese people have always been praised for their building skills and wisdom.And their great skills have been passed down to modern Chinese people.Evidence of this can be seen in recent buildings,such as the National Stadium,also known as the“Bird's Nest”in Beijing,and the Shanghai Tower.And recently,China has created even more proof of its great building skills.The Hong KongZhuhaiMacao Bridge(HZMB) was opened on Oct.24,2018.The HZMB,which is located at the waters of the Lingdingyang of Pearl River Estuary,is a huge sea crossing bridge,linking the Hong Kong SAR,Zhuhai City and the Macao SAR.As the world's longest seabased project,the 55kilometer bridge is the result of six years of research and another nine years of building.Builders had to make artificial islands in the Pearl River Delta to provide supports for the bridge.There is al so a 6.7kilometer underwater tunnel in the middle of the bridge.This is to allow ships to sail through the Delta.It has been named as one of the “seven wonders of the modern world”by The Guardian.“It is designed with a service life of 120 years.It can en dure a strong wind equal to a maximum Beaufort scale 16,”Zhu Yongling,a project official,told The Guardian.“It can also survive a magnitude8 earthquake.”Meanwhile,the Yshaped bridge could reduce travel time from Hong Kong to Zhuhai and Macao from more than three hours to about 45 minutes.“The bridge will no t only be a transport link.It will be a social,economic,cultural,and tourism connection among the three areas,”Yu Lie,deputy director of the Hong KongZhuhaiMacao Bridge Authority,said.The bridge will be open to tourists to drive across it.However,local car owners will not be able to cross the bridge unless they have a special permit.Most visitors will take a shuttle bus to make the journey.The shuttle buses will cost 300 yuan for a single trip.[语篇解读] 一桥连三地,天堑变通途。
2020高考英语阅读理解七选五试题及答案解析2020高考全国卷I阅读理解七选五试题及答案解析请看高考试题:第二节(共5小题;每小题2分,满分10分)根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。
选项中有两项为多余选项。
A Few Tips for Self-AcceptanceWe all want it … to accept and love ourselves. But at times it seems too difficult and too far out of reach. 36 ___ Here’s a handful of ways that will set you in the right direction.●37 Do not follow the people who make you feel not-good-enough. Why do you follow them? Are you hoping that eventually you will feel empowered because your life is better than theirs? Know that your life is your own; you are the only you in this world.●Forgive yourself for mistakes that you have made. We are often ashamed of our shortcomings, our mistakes and our failures. 38 You will make mistakes, time and time again. Rather than getting caught up in how you could have done better, why not offer yourself a compassionate (有同情心) response? "That didn’t go as planned. But, I tried my best."●Recognize all of your strengths. Write them down in a journal. Begin to train your brain to look at strength before weakness. List all of your accomplishments and achievements. You have a job, earned your degree, and you got out of bed today. 39●Now that you’ve listed your strengths, list your imperfections. Turn the page in your journal. Put into words why you feel unworthy, why you don’t feel good enough. Now, read these words back to yourself. 40 Turn to a page in your journal to your list of strengths and achievements. See how awesome you are?A. Feeling upset again?B. Where do you start?C. Nothing is too small to celebrate.D. Remember, you are only human.E Set an intention for self-acceptance.F. Stop comparing yourself with others.G. When does the comparison game start?请看答案及解析:本文是一篇说明文,语篇选材以“自我接纳”为主题,引导考生积极进行自我对话,关注青少年心理健康,体现了以人为本的价值理念。
语篇视角下英语高考“七选五”阅读理解试题研究与实战训练第一部分试题研究与解题指导【试题研究】2015~2017 年英语高考全国卷“七选五”阅读理解试题分析阅读理解是英语高考的一个重要组成部分,为了让广大师生对“七选五”阅读理解这一题型有更加深入地认识,本文对近三年英语高考全国卷“七选五”阅读理解试题进行全面深入地分析。
本解析包括四部分,第一部分是考纲解读,全面解析阅读理解考查要求;第二部分是近三年高考“七选五”阅读理解命题分析,通过对近三年高考阅读理解试题统计分析揭示其命题规律,对未来考查趋势作以预测;第三部分是说明文体和记叙文体在近三年“七选五”阅读理解中的考查情况分析;第四部分是各类文体的文本特征和阅读解题技巧,对各类文体的结构特点作以分析,针对不同文体提出相应的阅读与解题技巧,并指出答题误区。
……二、三年高考“七选五”阅读理解命题解析为了让广大考生对近三年阅读理解试题有一个比较全面地了解,本部分对第第二节的“七选五”阅读理解从主题语境、语篇类型、阅读总量、选项设置等几个方面以表格的形式作以统计,在统计的基础上分析其基本命题规律和命题变化趋势。
1.“七选五”阅读理解试题命题特征统计2.命题基本规律……【注:本文系作者为2018 年《试题调研》阅读专辑(第4 辑)所撰写并发表的特约稿件,有删改】2018、2019 年英语高考全国卷“七选五”阅读理解试题分析随着《普通高中英语课程标准(2017 版)》(以下简称新课标)的颁布,英语高考全国卷的命题依据新课标学业质量要求和高考命题建议在逐渐地发生变化,由对学生综合语言运用能力的考查升级为对学生英语学科核心素养的全面考查。
“七选五”阅读理解作为阅读理解试题中区分度比较大的试题类型,也在继承中发展与创新,越来越注重考查学生理解语篇上下文逻辑关系的能力。
为了让广大师生对新课标颁布以来两年的六套英语高考全国卷中的“七选五”阅读理解试题有一个全面了解,本文通过对试题统计分析以概括出这六份试题的特点和考查趋势,同时也提出对教学的启示和建议,以便广大师生能攻克高考英语“七选五” 阅读理解这一难关。
……【解题指导1】把握说明文文体结构特征驾驭“七选五”阅读理解试题——英语高考“七选五”阅读理解解题指导“七选五”阅读理解试题是自2010 年起英语高考新课标卷开始使用的一种阅读理解新题型,这个题型位于阅读理解第二节中,其题目要求为:根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。
该部分共设5 个小题,每小题2 分,满分10 分,试题由一篇去掉五个句子(或短语)的短文和七个选项句(或短语)组成,要求考生根据短文的内容选出最佳选项填入空白处,旨在考查考生运用英语获取信息、处理信息和综合运用信息的能力。
该题型不仅要求考生能够理解文章的内容,还要求考生能够从段落和篇章上去把握文章的层次结构,更注重对语篇结构的考查。
……【解题指导2】理清语篇脉络,巧解“七选五”阅读理解试题2016 年起,英语高考全国卷三份试题均采用了“七选五”阅读理解这一题型,位于阅读理解第二节。
该题型主要考查考生对语篇文本整体内容、结构、上下文逻辑意义的理解和掌握,相对于第一节的阅读理解而言,该题型对考生的阅读理解能力要求更高,难度相对较大。
本文将从考纲解读入手以明确“七选五”阅读理解试题的题型及对考生阅读能力的要求,通过统计分析2014 至2016 年全国卷“七选五”阅读理解试题揭示该题型的命题特征与命题变化趋势,然后提出该题型的解题方法和技巧,并对2016 年全国卷I “七选五”阅读理解真题进行解析,最后提出针对该题型的备考策略,以帮助广大学生全面了解和认识这一题型,掌握解题方法,提高解题技能。
……【注:此文系作者为2017 年《学英语》高三版所撰写的特约稿件,2017 年 1 月17 日发表于第29 期(总15494 期),有修改】【解题指导3】英语高考全国卷“七选五”阅读理解解题指导(2018)……三、“七选五”阅读理解解题方法与步骤1.解题方法(1)利用语篇文本结构解题。
理清说明文语篇文本结构是解答高考“七选五” 阅读理解试题的关键所在,说明文语篇通常采用总分(总)式结构,所以解题时首先要在首段中找到语篇所要说明的对象和篇章主旨是什么,然后再去看其它段落首句,如果每段首句恰好是该段的主题句(说明文中阐明每段主旨的句子通常位于段首),就能理清语篇文本的基本结构。
例如:2016 年全国卷I“七选五”阅读理解材料第一段从“密码的应用”引入话题,第二段从“编码和解码”再到“密码学的概念”切入到文章的主题——密码学,这两段应该是总体说明部分,接下来的三、四、五段用举例的方式说明了三种类型密码的编码和解码,三至五段是文章的分别说明部分。
理清语篇的文本结构,便能进一步把握语篇的内在逻辑关系。
弄清本文三、四段之间的关系就能轻易地判断出第38 题应选G 选项来说明第二种类型密码的编码,起到连贯衔接作用。
(2)利用篇章标题、小标题、项目符、序号和突出的字体等信息解题。
有些命题材料设置了标题和小标题,有时文中还包含有项目符、序号或突出的字体等信息,在解题时要充分利用这些信息。
这些信息有助于理清语篇文本结构、文章主旨和段落主旨。
如在2017 年全国卷III 中,看到四个项目符就知道语篇采用了“总分”式结构,每个项目符后的祈使句就是段落的主旨,段落其它部分对主旨句进行诠释和展开说明,阅读主旨句就理清了语篇基本结构。
……【注:此文系作者为2018 年《学英语》高三版撰写的特约稿件,2018 年 1 月16 日发表于第29 期(总16254 期),有修改】第二部分分类实战训练记叙文类记叙文文本结构与解题关键【文本结构】高考题中所选的记叙文通常以记人、叙事为主,以人物的经历和事物发展变化为主要内容。
记叙文包含时间、地点、人物、起因、经过和结果六要素,常用的记叙顺序有顺叙、倒叙、插叙、补叙和分叙,表达方式有叙述、描写、议论、说明和抒情。
【解题关键】记叙文的阅读一要抓住时间、地点、人物、起因、经过和结果六要素,二要弄清记叙的顺序,三要把握好人物的情感和态度。
如果记叙中所涉及的人物较多,还要弄清人物之间的关系。
在阅读解题时,首先要通读全文,弄清六要素和记叙的顺序,特别要注意文章中所提到的多个时间、地点、人物,理清起因、经过和结果;然后阅读选项,弄清事情的起因、经过和结果,根据故事发展的线索、事物的先后顺序、指代关系、同词重现等下上文信息确定答案。
实战训练1——记叙文题组试题要求:根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。
选项中有两项为多余选项。
Passage 1话题:生活经历词数:289 words 难度指数:★☆☆☆☆Michael’s birthday was coming soon, so he asked his dad for a bicycle so that hewould not need to walk to school anymore. 36 Michael got a book instead but he did not complain.One bright and sunny day while Michael was walking past a convenience storeon his way to school, he saw a big boy on a bike. The bike was too small for the boy.37The boy was a prefect in Michael’s school. Michael recognized him. The boy’s name was William. William seemed to have broken his leg. Michael picked up William’s bike which was not damaged and rode to the nearby hospital to get help.38 Michael rode William’s bike to school so he would not be late for class.After school, Michael quickly rode the bicycle to William’s house with a book and a jigsaw puzzle (七巧板) for William. 39 He could stay at home for a rest after his leg was put in a cast (给……做石膏固定).To Michael’s surprise, William was getting a new bike on his birthday in two months’ time and Michael could have William’s old bike. Michael was overjoyed.40 Michael visited William every day till William’s leg was healed (痊愈).A.Luckily, William was not too seriously hurt.B.Michael found it amusing and couldn’t help laughing.C.From then on, Michael and William became good friends.D.William gave his bike to Michael to show his thanks to Michael.E.However, Michael’s dad had lost his job and did not have much money.F.As the boy was turning around a corner, the bike crashed into a lamp-post.G.A few minutes later, an ambulance came and brought William to the hospital.……说明文类典型结构说明文文本结构与解题关键【文本结构】典型结构说明文常用总分(总)式文本结构,由总体说明、分别说明和总结三部分构成,这类说明文语篇多以方法、技巧、建议为其内容,说明如何做事。
文章的首段往往做出总体说明,在引入文章的主题后明确说明的维度(或角度),……【解题关键】理清语篇文本结构、说明方法和逻辑关系是解答典型结构说明文类“七选五”阅读理解试题的关键。