Importance of HTML structural elements and metadata in automated subject classification
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我最喜欢的课程是音乐课的英文作文1. 引言IntroductionIn the realm of academia, where an array of subjects vies for attention, there exists one discipline that resonates with me profoundly – Music Class. It transcends mere intellectual pursuit, offering a harmonious blend of creativity, emotion, and cultural immersion. This essay elucidates why Music Class holds a special place in my heart.2. 创造力的孵化器A Cradle for CreativityMusic Class is not merely a repository of theoretical knowledge but a dynamic platform that fosters creativity. It encourages us to experiment with melodies, harmonies, and rhythms, allowing us to express ourselves in a unique, non-verbal language. The process of composing, arranging, or improvising music stimulates our imagination and challenges us to think outside the conventional boxes. It is here that I learn to transform abstract ideas into tangible musical expressions, thus nurturing my artisticingenuity.3. 情感的共鸣与宣泄Emotional Resonance and CatharsisMusic has the unparalleled ability to evoke emotions, and Music Class serves as a sanctuary where these feelings find their voice. Whether it's the melancholic strains of a ballad, the exhilarating crescendos of a symphony, or the rhythmic pulsations of a dance track, each piece carries a distinct emotional charge. Engaging with such diverse repertoire in class enables me to empathize with different perspectives, broaden my emotional spectrum, and find solace or inspiration in times of joy or distress. Moreover, performing or creating music can be a powerful means of catharsis, helping me channel and articulate complex emotions that words often fail to capture.4. 文化交融的桥梁A Bridge Across CulturesMusic is a universal language that transcends geographical boundaries and time periods. In Music Class, we delve into the rich tapestry of global musical traditions, from the classical grandeur of Western orchestras to the intricate rhythms of African drumming,the meditative tranquility of Indian ragas to the vibrant energy of Latin American salsa. This exposure not only enriches my understanding and appreciation of diverse cultures but also fosters a sense of unity amidst diversity. It teaches me that despite our differences, we share a common human experience expressed through the universal language of music.5. 技能与素养的提升Enhancement of Skills and LiteracyAttending Music Class entails the acquisition of a multitude of practical skills, such as playing an instrument, reading musical notation, and using digital music software. These skills not only contribute to personal enjoyment and self-expression but also enhance cognitive abilities like memory, concentration, and coordination. Furthermore, music literacy equips me with a deeper understanding of the structural elements and historical context of various musical genres, fostering critical thinking and analytical skills. The discipline required for consistent practice and performance instills valuable life skills like perseverance, discipline, and teamwork.6. 社交与合作的纽带A Bond of Social Interaction and CollaborationMusic Class is inherently collaborative, as it often involves group performances, ensemble rehearsals, and peer feedback sessions. These interactions foster camaraderie, empathy, and effective communication, as we learn to listen attentively, synchronize our efforts, and respect each other's contributions. Participating in musical ensembles teaches me the importance of harmony –both musical and interpersonal –and the beauty that arises from collective creative endeavor.7. 结论ConclusionIn conclusion, Music Class stands out as my favorite subject due to its multifaceted nature that nurtures creativity, facilitates emotional expression, bridges cultural divides, enhances skills and literacy, and promotes social interaction and collaboration. It is more than just a school subject; it is a holistic learning experience that enriches my life in countless ways, resonating with my soul and inspiring me to continuously explore the boundless universe of sound and melody.Title: My Favourite Subject: Music Class1. 引言Introduction在学术的领域中,众多学科各展魅力,其中有一门学科深深触动着我——那就是音乐课。
园林专业英语考试andI.Vocabulary and Structure(Fill in the blanks with proper words or expressions,2 points for each one,total is 20 points).1.The heritage of garden art can make a()contribution towards general cultural education.It is of quite special importance for professional training since it contains the grammar of landscape design from the earliest beginnings up to modern times.A.biggerB.greaterC.considerableD.enough2.In garden terms a strict“conserve as found”,or preservation,policy is rarely appropriate because of the()of the principal medium,the plants.A.very long timeB.ephemeralityC.transitorinessD.transiency3.The history of life on earth has been a historyof()between living things and their surroundings.A.interactionB.relation ofC.relationshipD.connection4.()the whole span of earthly time,the opposite effect,in which life actually modifies its surroundings,has been relatively slight.A.HoweverB.ConsideringC.InspiteD.Although5.Considered as materials,all plants have definite potentialities and each plant has an inherent quality which will inevitably express itself.An intelligent landscape design can evolve only()a profound knowledge of,and sensitivity to,materials.A.fromB.betweenC.amongD.upon6.The layout of these landscape designs may have survived,but the planting will have changed many times through age and fashion,and because the provision for planting did notfavour the()of the plants.A.productionB.yieldC.reproductionD.regeneration7.These steps of the design process represent an ideal sequence of events.Many of the()overlap one another and blend together so the neat ordering of the outline is less clear and apparentA.foot paceB.stepsC.stepdder8.Each project represents a unique set of circumstances and,therefore,()a different method for proceeding through the design process.A.requiredB.requiresC.requireD.requiring9.Park projects would civilize and()the national character,foster the love of rural beauty and increase theknowledge of and taste for rare and beautiful trees and plants.A.refinedB.refineC.designedD.design10.The case for public parks in the 19th century was built largely on the same concerns()that for improved housing.A.soB.intoC.asD.likeII.True or False Questions.(Select T if the statement is true,select F if it is false.2 points for each one,total is 10 points).11.ICOM is the abbreviation of International Council of Museums.()A.TB.F12.UNESCO is the abbreviation of United Nations Educational,Scientific and Cultural Organization.()A.TB.F13.The IInd International Congress of Architects and Technicians of Historic Monuments,which met in Venice from May 25th to 31st 1964.()A.TB.F14.As the new day breaks,the city lights fade,overpowered by the light of the sun;blue seas and green forests and grasslands emerge,surrounding and penetrating the vast urban constellations.()A.TB.F15.In the preliminary master plan all elements of the design are put together and studied in association with one another in a realistic,semicomplete graphic manner.()A.TB.FIII.Cloze test(Please fill in the blanks of the following passages with proper words or phases given below.2 points for each one,total is 20 points).1.As an(16),the extent and type of information sought during the site analysis should directly(17)on the character and complexity of concepts prepared in a later phase.Likewise,one may find it necessary to revisit the site or talk to the(18)again once the design phase itself has been started because some item of information was overlooked the first time or one’s memory and(19)simply need refreshing.And sometimes it helps to revisit the site after starting the design phase because then the designer can look at the site with experience and greater understanding of what limitations or opportunities are present.In other words,no one step of the(20)process occurs independently of the others.A.designB.impressionC.dependD.illustrationE.client2.While the practitioners of the English(21)of Landscape were using a limited range of plant species,a few botanical gardens and,of course,the traditional cottage(22)contained a wider range.Certainly by the end of the first quarter of the 18th century,the importation of exotics into Britain from abroad had(23),especially from North American.In 17XX the collection at Whitton,near Hounslow,listed 342 different plant species,and by 1768 the Royal garden at Kew had over 3000different(24)with the precise figure of 5535 in 17XX.More interesting to planting design,however,was the record of Dr.John Fothergill’s garden laid out in 1762 at Upton House,East Ham,because this included a wild area in which hardy exotics successfully naturalized.Dr.Fothergill also(25) alpine plants.F.gardenmencedH.SchoolI.cultivatedJ.speciesIV.Reading comprehension questions(2 points for each one,total is 20 points).1.Questions 26 to 30 are based on the following passage.In 1887 a professor of mental and moral philosophy,Grant Allen,published an analysis of aesthetics called Physiological Aesthetics.Today this little classic is virtually forgotten, but if a copy can be found,I commend it to all.The aesthetic conclusions were geared to the emotions of the day and to us now seem horribly sentimental,but the scientific method is unanswerable.It explains the hostility of modern man to what he feels is a soul-less,machine-made environment,and is a basicguide to landscape.From this primitive treasure house my own first choice is the power of stereoscopic vision to create feeling as well as sight in environment,how we can and should design for it,and how a felt foreground will connect our psyche to middle and far distance.But of course the perceptions are only a technical part in the long manufacture of the emotions in that marvellous green and restless habitat.In a period described as the golden age of the mammals,we were vegetarian, peace-loving and monarchs.No wonder the irrational parts of us hanker for that carefree if cruel existence,which created our basic sense of beauty and subconsciously inspires most private gardens today.26.A good title for this passage is().A.Physiological aestheticsB.Aesthetic development in landscape architectureC.the history of physiological aesthetics.D.the history of landscape.27.The word“geared”in the paragraph means().A.To become adjusted so as to fit or blendB.To equip with gears.C.To connect by gears.D.To put into gear.28.The word“stereoscopic”in the paragraph means().A.relating to seeing space three-dimensionally as a result of binocular disparity.B.formed by a stereoscopeC.relating to a stereoscopeD.of a stereoscope29.The word“vegetarian”in the paragraph means().A.a person who advocates or practises vegetarianismB.CookeryC.consisting of vegetables and fruit onlyD.Consisting primarily or wholly of vegetables and vegetable products30.The word“monarch”in the paragraph means().A.peopleB.humanC.studentD.animal2.Questions 31 to 35 are based on the following passage.Ruins must be maintained and measures necessary for the permanent conservation and protection of architectural features and of objects discovered must be taken. Furthermore, every means must be taken to facilitate the understanding ofthe monument and to reveal it without ever distorting its meaning.All reconstruction work should however be ruled out “a priori”.Only anastylosis,that is to say,the reassembling of existing but dismembered parts can be permitted.The material used for integration should always be recognizable and its use should be the least that will ensure the conservation of a monument and the reinstatement of its form.31.The word“ruin”in the paragraph means().A.something that is severely damagedB.a person who has suffered a downfallC.destroyed or decayed building or townD.loss of value or usefulness32.The word“conservation”in the paragraph means().A.protection,preservation,and careful management of natural resources and of theenvironment B.maintenance C.The maintenance of a physical quantity D.the principles of democracy33.The word“anastylosis”in the paragraph means().A.reassemblyB.archaeology,C.repeatD.reproduce34.The word“dismembered”in the paragraph means().A.to remove the limbs or members ofB.to cut to piecesC.to divide or partitionD.dissected35.The word“reinstatement”in the paragraph means().A.restorationB.recoverC.restartD.conversationV.Translation(Please translate the following passages into Chinese.10 points for each one,total is 30 points).1.The master plan,the next step in the design process,isa refinement of the preliminary master plan.After gaining the reactions of the client from the preliminary master plan,the designer may need to revise and restudy certain portions of the proposal.With these changes included,the designer once again draws the site plan in a presentable fashion.One of the primary differences between a preliminary master plan and a master plan,in addition to the necessary design revisions,is the graphic style of each.While the preliminary master plan is drawn in loose,freehand,yet legible manner,the master plan istypically drawn with more control and refinement,as in Figure.9.1.Rather than drawn entirely freehand,the master plan may have certain parts such as the property line,building outline,and edges of hard structural elements (walls, terrace, walks,decks,etc.)drafted with a triangle and T-square. However, other elements such as plant materials are still drawn freehand. To give the plan a controlled appearance,more time is usually spent drawing the master plan compared with the preliminary master plan.2.Modern urban problems are no different,in essence,from those that plagued ancient cities,execpt in degree,in the toxicity and persistence of new contaminants,and in the extent of the earth that is now urbanized.Even those who have sought to introduce nature to the city in the form of parks and gardens have frequently viewed the city as something foreign to nature,have seen themselves as bringing a piece of nature to the city.3.The cypress avenue was another form of planting and directed attention to a view beyond the garden or to some feature in the garden,and to a certain extent reduced the strong visual effect of planting arranged to form a pattern.The association between the landscape designs of the Far East andthe natural landscape is familiar to those interested in the history of landscapes,especially in the stylized simulation of mountain and river landscapes,and also the philosophy embodied in this association.。
九年级英语作文评课Here is an English essay with more than 1,000 words, without a title, and without any extra punctuation marks in the body of the text.In the realm of language learning, the evaluation of English compositions holds a pivotal role in shaping the development of students' writing skills. As a ninth-grade English teacher, I have the privilege of guiding my students through this crucial stage of their academic journey. The process of providing constructive feedback on their written work not only enhances their proficiency in the language but also fosters a deeper understanding of the nuances and intricacies of effective communication.One of the primary objectives in evaluating ninth-grade English compositions is to identify the areas of strength and areas for improvement within each student's writing. By closely examining the structure, content, grammar, and overall coherence of their work, I am able to pinpoint the specific aspects that require further attention. This targeted approach allows me to tailor my instructional strategies to the individual needs of my students, ensuring that they receive the necessary support to enhance their writing abilities.A key aspect of the evaluation process is the assessment of the students' ability to organize their thoughts and ideas in a logical and cohesive manner. Ninth-grade students are often still developing their skills in crafting well-structured essays, and it is our responsibility as educators to guide them in this regard. I pay close attention to the flow of their writing, the clarity of their thesis statements, and the coherence of their supporting arguments. By providing detailed feedback on the overall organization and structure of their compositions, I can help students understand the importance of logical progression and the effective use of transitional devices.In addition to the structural elements, the evaluation of content is equally crucial. I examine the depth and relevance of the ideas presented by the students, as well as their ability to engage the reader and maintain their interest throughout the essay. Ninth-grade students are often grappling with complex topics and concepts, and it is essential that they demonstrate a clear understanding of the subject matter and the ability to articulate their thoughts effectively. By providing constructive feedback on the content and substance of their writing, I can encourage students to delve deeper into their topics, explore multiple perspectives, and develop a more nuanced and well-rounded understanding of the subject.Another crucial aspect of the evaluation process is the assessment ofgrammar and mechanics. Ninth-grade students are still in the process of mastering the intricacies of the English language, and it is important to provide them with guidance on proper usage, sentence structure, and the application of grammatical rules. I carefully examine their work for common errors, such as subject-verb agreement, pronoun usage, and punctuation, and offer specific feedback to help them improve their command of the language. By addressing these technical aspects of writing, I can empower students to communicate their ideas more effectively and with greater precision.The evaluation of ninth-grade English compositions also involves the assessment of the students' ability to express themselves creatively and engage the reader. I encourage my students to explore various rhetorical techniques, such as the use of figurative language, vivid descriptions, and persuasive appeals. By providing feedback on the creativity and stylistic elements of their writing, I can inspire students to develop a more dynamic and engaging writing voice, which can enhance the overall impact of their compositions.Throughout the evaluation process, I strive to strike a balance between constructive criticism and positive reinforcement. While it is essential to identify areas for improvement, it is equally important to acknowledge the students' strengths and celebrate their successes. By highlighting the aspects of their writing that are particularlyeffective, I can boost their confidence and motivate them to continue honing their skills. This approach not only helps students recognize their own capabilities but also fosters a growth mindset, where they are empowered to take ownership of their learning and continuously work towards improving their writing abilities.The evaluation of ninth-grade English compositions is a multifaceted process that requires a deep understanding of the unique challenges and developmental needs of this age group. As an educator, I am committed to providing my students with the guidance and support they need to become confident and proficient writers. By addressing the structural, content-related, grammatical, and stylistic elements of their work, I aim to equip them with the necessary tools to effectively communicate their ideas, express themselves creatively, and engage with the world around them through the power of the written word.。
八下英语作文四单元Learning a new language can be a challenging yet rewarding experience. As students in grade 8, we are currently exploring the fourth unit of our English curriculum, which focuses on various aspects of language acquisition and cultural exchange. In this essay, I will delve into the significance of learning English, the benefits it offers, and the strategies I have employed to enhance my proficiency in this global language.Firstly, the importance of learning English cannot be overstated. English is the predominant language of international communication, used in fields ranging from business and diplomacy to academia and technology. By mastering English, we gain access to a world of opportunities, both in our academic pursuits and future careers. The ability to effectively communicate in English opens doors to higher education, prestigious internships, and lucrative job prospects, as it is the lingua franca of the global marketplace.Moreover, learning English provides us with a deeper understanding of diverse cultures and perspectives. As we engage with Englishliterature, media, and interactions with native speakers, we are exposed to a wealth of cultural nuances and traditions. This exposure fosters empathy, cultural awareness, and the ability to navigate cross-cultural interactions with ease. In our increasingly interconnected world, these skills are invaluable, as they enable us to collaborate, network, and forge meaningful connections with individuals from various backgrounds.In addition to the professional and cultural benefits, learning English also enhances our cognitive abilities. Studies have shown that the process of acquiring a new language stimulates the brain, improving memory, problem-solving skills, and critical thinking. As we navigate the complexities of English grammar, vocabulary, and syntax, we exercise our mental faculties, strengthening our overall intellectual capacity. This cognitive development not only benefits us in our academic pursuits but also equips us with the necessary tools to tackle the challenges of the 21st century.To maximize the benefits of learning English, I have employed a multifaceted approach to enhance my proficiency. Firstly, I have made a concerted effort to immerse myself in the language as much as possible. This includes watching English-language films and television shows, listening to English-language music, and reading a variety of English-language materials, from novels to news articles. By exposing myself to the language in various contexts, I have beenable to improve my comprehension, expand my vocabulary, and develop a better understanding of idiomatic expressions and nuanced usage.Secondly, I have actively participated in English-language discussions and conversations, both in and out of the classroom. Engaging with my peers and teachers in English has allowed me to practice my speaking and listening skills, while also providing valuable feedback on areas for improvement. Additionally, I have sought out opportunities to interact with native English speakers, whether through language exchange programs or online platforms, as these interactions offer invaluable insights into the cultural and linguistic nuances of the language.Furthermore, I have dedicated time to methodical study and practice of English grammar, syntax, and writing conventions. By thoroughly understanding the structural elements of the language, I have been able to communicate more effectively and confidently in both written and oral contexts. I have also made use of various online resources, such as language-learning apps and educational websites, to supplement my classroom instruction and reinforce my understanding of the language.Perhaps most importantly, I have maintained a positive and persistent attitude towards learning English. I recognize thatmastering a new language requires time, effort, and a willingness to make mistakes and learn from them. Rather than being discouraged by the challenges, I have embraced them as opportunities for growth and self-improvement. This mindset has allowed me to persevere through the inevitable ups and downs of the language-learning process, and to ultimately make steady progress in my proficiency.In conclusion, the importance of learning English cannot be overstated. As students in grade 8, we are at a crucial juncture in our educational and personal development, and the skills we acquire in this unit will undoubtedly shape our future trajectories. By immersing ourselves in the language, engaging in active practice, and maintaining a positive and persistent attitude, we can unlock a world of opportunities and personal growth. I am committed to continuing my journey of English language mastery, and I am confident that the strategies I have employed thus far will serve me well as I navigate the exciting challenges and rewards that lie ahead.。
1.“Materials science"involves investigating the relationships that exist between the structures and properties of materials. In contrast, "Materials engineering" involves, on the basis of these structur e-property correlations, designing or engineering the structure of a material to produce a predeter mined set of properties.“材料科学”涉及研究材料的结构和性能之间的关系。
相反,“材料工程”是指在这些结构和性能相关性的基础上,基于预期的性能来设计或生产有预定性能的材料。
2.Virtually all important Properties of solid materials may be grouped into six different categories: mechanical, electrical, thermal, magnetic, optical, and deteriorative实际上,固体材料的所有重要性质都可以分为六类:机械、电气、热、磁、光学和腐蚀性。
3.In addition to structure and properties, two other important components are involved in the scien ce and engineering of materials- namely“processing”and“performance”.除了结构和性能之外,材料科学和工程还涉及另外两个重要的组成部分,即“加工”和“性能”。
英语作文中的常见建筑单词{z}Title: Common Architectural Words in English EssaysIntroduction:When writing essays in English, it is important to have a rich vocabulary to effectively describe architectural elements and structures.In this document, we will explore some common architectural words that can be used in English essays.1.Building Materials:- Concrete: A strong and durable material commonly used in construction.- Brick: A rectangular block of clay or other materials, commonly used in building walls.- Steel: A strong and flexible material, often used in the construction of skyscrapers and bridges.- Glass: A transparent material used in windows and facades, allowing natural light to enter the building.2.Structural Elements:- Foundation: The base of a building, providing support and stability.- Wall: A vertical structure that divides or encloses space within a building.- Floor: The flat surface on which people walk, located below the ceiling and above the foundation.- Roof: The covering of a building, protecting it from weather elements.3.architectural Features:- Arch: A curved structure that spans a space and transfers weight to the supports at each end.- Column: A vertical support, often made of wood or metal, that provides structural support.- Beam: A horizontal structural element that supports weight, often made of wood or metal.- Dome: A circular or oval structure with a rounded top, often found in religious buildings.4.Spaces and Rooms:- Hall: A large, open space within a building, often used for gatherings or events.- Room: A enclosed space within a building, used for various purposes such as living, working, or sleeping.- Lobby: An entrance area of a building, often featuring a reception desk or seating area.- Atrium: A large, open central space in a building, often featuring a skylight or glass roof.5.Architectural Styles:- Gothic: A style of architecture characterized by pointed arches,ribbed vaults, and flying buttresses.- Renaissance: A style of architecture that emerged during the Renaissance period, characterized by symmetry, proportion, and classical elements.- Modern: A style of architecture that emerged in the 20th century, characterized by simplicity, functionality, and the use of new materials and technologies.Conclusion:In conclusion, having a diverse vocabulary of architectural terms is essential when writing essays in English.By utilizing the common architectural words mentioned in this document, students can effectively describe and discuss various elements and styles of architecture.。
2025年教师资格考试高级中学英语学科知识与教学能力模拟试卷与参考答案一、单项选择题(本大题有30小题,每小题2分,共60分)1、Which of the following is NOT a characteristic of communicative language teaching (CLT)?A. Emphasis on accuracy over fluencyB. Use of authentic materialsC. Focus on meaningful communicationD. Learner-centered approachAnswer: AExplanation: Communicative Language Teaching (CLT) emphasizes the importance of using the language for communication and interaction. It encourages fluency over accuracy, which means that while making errors is seen as a natural part of the learning process, the ability to communicate effectively is prioritized. Authentic materials, a focus on meaningful communication, and a learner-centered approach are all key features of CLT, making option A the correct choice as it contradicts the principles of CLT.2、In second language acquisition, the term ‘fossilization’ refers to:A. The process by which learners acquire grammatical rulesB. The point at which a learner’s interlanguage stops developingC. The initial stage of language learning where vocabulary is emphasizedD. The technique of using physical objects to teach language conceptsAnswer: BExplanation: Fossilization is a phenomenon in second language acquisition where the errors made by learners become permanent and resistant to change. This typically occurs when a learner reaches an intermediate level but fails to progress further, resulting in a stabilization of their interlanguage, which is the learner’s current state of knowled ge about the target language. Options A, C, and D do not accurately describe fossilization, thus B is the correct answer.3、The teacher is about to introduce a new topic in the English class. Which of the following phrases can best be used to engage the st udents’ interest and prepare them for the lesson?A. “Now, class, let’s dive into the depths of this new topic.”B. “Alright, everyone, it’s time to turn the page and explore something new.”C. “Today, we’re going to embark on an adventure through the worl d of literature.”D. “Let’s start by reviewing what we learned last class, and then we’ll move on to our new topic.”Answer: C. “Today, we’re going to embark on an adventure through the worldof literature.”Explanation: Option C uses an engaging and vivid phrase (“embark on an adventure”) that can capture the students’ interest and create a sense of excitement about the new topic. It also clearly indicates the direction of the lesson, which is beneficial for setting expectations and preparing the students for what to expect.4、In a reading comprehension activity, the teacher wants to ensure that students understand the main idea of a passage. Which of the following methods is most effective for this purpose?A. “Find the first sentence of each paragraph and summarize it.”B. “Circle the keywords in each paragraph and then discuss their meaning.”C. “Read the passage aloud and pause after each paragraph to discuss the main point.”D. “Write a one-sentence summary of the entire passage and share it with the cl ass.”Answer: D. “Write a one-sentence summary of the entire passage and share it with the class.”Explanation: Option D encourages students to think critically about the passage and distill its main idea into a concise statement. This method promotes active engagement with the text and helps students internalize the key information. It also allows the teacher to monitor each student’s understanding and provide feedback accordingly.5、Which of the following teaching methods emphasizes student-centered learning and encourages active engagement in the classroom?A、Lecture methodB、Auditory methodC、Interactive methodD、Cooperative methodAnswer: CAnalysis: The interactive method (选项C) is a student-centered approach that encourages active participation and interaction among students. This method promotes collaborative learning and discussion, which helps students develop critical thinking and communication skills.6、In the context of English language teaching, which of the following activities is most suitable for achieving the communicative competence of advanced high school students?A、Translating short paragraphs from English to ChineseB、Listening to and discussing authentic English-language podcastsC、Writing detailed summaries of poetryD、Parroting back English-language vocabulary listsAnswer: BAnalysis: Listening to and discussing authentic English-language podcasts (选项B) is the most suitable activity for achieving the communicative competence of advanced high school students. This activity provides real-worldlanguage input and encourages students to engage in meaningful communication, understand cultural nuances, and practice comprehension in an authentic context.7、The teacher is demonstrating a new vocabulary word to the high school students. Which of the following techniques would be most effective in helping the students retain the information?A. Using a direct translation from a familiar language.B. Providing a visual representation of the word in context.C. Asking students to repeat the word without giving any examples.D. Starting a brainstorming session about the word’s origin.Answer: B. Providing a visual representation of the word in context.Explanation: Visual aids, such as showing a picture of the object or situation that the word describes, can help students connect the new vocabulary with concrete examples and incidents. This concrete association is generally more effective in memory retention than a purely auditory or semantic approach.8、Which of the following is the most appropriate method to use when reviewing the structure of a complex literary text with advanced-level English language learners?A. Providing a comprehensive outline of the text structure.B. Encouraging students tomemorize a list of the text’s main structural elements, such as introduction, body paragraphs, and conclusion.C. Having students summarize the text in their own words before discussingthe structure.D. Asking students to rearrange the text elements without any prior guidance or explanation.Answer: C. Having students summarize the text in their own words before discussing the structure.Explanation: Reviewing the structure of a text is best accomplished by first having students summarize what they have read. This summarization phase activates prior knowledge and encourages students to engage more deeply with the content. Following this, d iscussion about the text’s structure can be conducted in a way that connects the new information to their personal understanding of the text. This method leads to a more active and meaningful learning experience.9、Which of the following activities best pr omotes students’ communicative competence?A) Completing grammar worksheets.B) Memorizing vocabulary lists.C) Role-playing a conversation at a restaurant.D) Writing a formal essay on a given topic.Answer: CExplanation: Communicative competence involves the ability to use language effectively in real-life situations. Role-playing a conversation at a restaurant (Option C) provides students with an opportunity to practice usinglanguage in a practical context, thereby enhancing their communicative skills. The other options focus more on discrete aspects of language learning, such as grammar, vocabulary, or writing, which do not necessarily promote communicative competence.10、When teaching pronunciation, what is a key factor that teachers should consider to help students improve their listening and speaking skills?A) Encouraging students to read aloud texts they have never seen before.B) Focusing solely on the pronunciation of individual sounds.C) Providing authentic listening materials that reflect natural speech patterns.D) Asking students to write down new vocabulary words and their phonetic transcriptions.Answer: CExplanation: To improve listening and speaking skills, it is essential for students to be exposed to authentic listening materials that reflect natural speech patterns (Option C). This exposure helps students become familiar with the rhythm, intonation, and connected speech features of the language, which are crucial for effective communication. While reading aloud and focusing on individual sounds can also be beneficial, they are not as effective in isolation as providing authentic listening practice. Writing down phonetic transcriptions can aid memory but does not directly enhance listening or speaking abilities.11、The teacher is using a visual aid to illustrate the concept of present perfect tense. Which of the following statements best describes the visual aid?A) A timeline showing events that started in the past and continue to the present.B) A series of photos of students from different eras.C) A chart comparing present perfect and present continuous tenses.D) A map showing the progression of a story.Answer: A) A timeline showing events that started in the past and continue to the present.Explanation: The present perfect tense is used to describe actions that started in the past and continue to the present. A timeline is an effective visual aid to demonstrate this concept by showing the continuity of events.12、In the context of teaching reading comprehension, which of the following strategies is most appropriate for helping students identify the main idea of a text?A)Paraphrasing sentences from the text.B)Summarizing the text in their own words.C)Asking students to predict the outcome of the story.D)Focusing on specific details and facts from the text.Answer: B) Summarizing the text in their own words.Explanation: Summarizing the text in their own words is a key strategy for identifying the main idea because it requires students to distill the essential information and concepts, rather than focusing on specific details or predictions. This helps them understand the overall message and purpose of the text.13、In which of the following works is the character Pip the main character?A. Oliver Twist - Charles DickensB. Great Expectations - Charles DickensC. Jane Eyre - Charlotte BronteD. Wuthering Heights - Emily BronteAnswer: B解析: Pip is the central character in “Great Expectations” by Charles Dickens. The novel explores Pip’s life and relationships and his journey to becoming a gentleman.14、Which novel features a deterministic theme, where the characters’ actions are largely determined by their environment and societal conditions?A. 1984 - George OrwellB. To Kill a Mockingbird - Harper LeeC. Crime and Punishment - Fyodor DostoevskyD. The Great Gatsby - F. Scott FitzgeraldAnswer: C解析: “Crime and Punishment” by Fyodor Dostoevsky is known for its deterministic themes, where the narrator Raskolnikov’s actions are influenced deeply by his harsh environment and societal conditions, reflecting wider themes of free will versus determinism.15、The following sentence can be properly rewritten as a passive voice without changing the meaning:A)The stone was thrown by Tom.B)Tom threw the stone.C)By Tom, the stone was thrown.D) A stone was thrown by Tom on the ground.Answer: CExplanation: The correct passive voice form changes the subject to the receiver of the action (the stone) and uses the appropriate form of “to be” combined with the past participle. In this case, “By Tom, the stone was thrown” is the proper passive voice construction.16、Which of the following sentences correctly uses the past perfect tense?A)She had finished her homework before dinner time.B)She finishes her homework after dinner.C)She has finished her homework every day.D)She will finish her homework before it’s too late.Answer: AExplanation: The past perfect tense is used to describe an action that happened before another past action. In this question, the sentence refers to an action (finishing homework) t hat happened before “dinner time.” The past perfect tense construction is “had + past participle,” hence “had finished” in option A is the correct choice. The other options use the present simple or future perfect tenses, which are not appropriate for the context.17、Which of the following is NOT a communicative competence skill according to Canale and Swain (1980)?A. Grammatical competenceB. Sociolinguistic competenceC. Strategic competenceD. Discourse competenceAnswer: EExplanation: Canale and Swain’s model of communicative competence includes grammatical competence (knowledge of vocabulary, morphology, syntax, semantics, and phonology), sociolinguistic competence (understanding of how language use varies according to social context), strategic competence (ability to compensate for lack of knowledge), and discourse competence (ability to connect sentences together coherently). The correct choice is not listed among the options, but if we assume that ‘E’ represents an option not given, it would be the correct answer by default. However, if this is a mistake and one of the listed options is supposed to be incorrect, then the question needs to be reviewed.18、When designing a lesson plan, which of the following steps should come first?A. Identifying learning objectivesB. Selecting teaching materialsC. Planning assessment methodsD. Organizing classroom activitiesAnswer: AExplanation: In effective lesson planning, identifying learning objectives is the crucial first step. These objectives guide the selection of teachingmaterials, planning of assessment methods, and organization of classroom activities. They define what students should know or be able to do at the end of the lesson, ensuring that all other components of the lesson are aligned with these goals.19.The following sentence contains an error in verb tense. Which sentence is correct?A. The students are doing their homework in the library.B. The students had done their homework when the teacher came in.C. The students will be doing their homework in the library next week.D. The students were doing their homework when the teacher came in.Answer: DExplanation: Option D is correct because it uses the past continuous tense to describe an action that was happening at a specific moment in the past (when the teacher came in). The other options use incorrect tenses: A uses the present continuous, B uses the past perfect, and C uses the future continuous.20.Choose the word that best completes the sentence.The teacher_______the students to participate in the discussion actively.A. encouragesB. discouragedC. discouragingD. will encourageAnswer: AExplanation: Option A is correct as “encourages” is the correct form of the verb to use in this context, which means “to inspire or motivate someone to do something.” The other options do not fit the context: B is the past tense of discourage, C is the present participle, and D is the future tense of encourage.21、Which of the following best describes the relationship between a thesaurus and a dictionary?A、A thesaurus provides synonyms for words, while a dictionary offers definitions and information about words.B、A thesaurus lists homophones, while a dictionary provides synonyms.C、A thesaurus and a dictionary are both conduits for personal expression.D、A thesaurus and a dictionary are interchangeable tools for writing.Answer: AExplanation: A thesaurus is primarily used for finding synonyms and related words, while a dictionary provides definitions and other information about words, including their etymology, pronunciation, and usage. These tools serve different purposes and are not interchangeable.22、Which层面的理解方式最能体现阅读活动中的深度对话与批判性思维?A、表层理解B、中层理解C、深层理解D、超层次理解Answer: CExplanation: Deep understanding (深层理解) refers to a comprehensive and critical interpretation of a text, including its themes, symbols, and underlying messages. It involves not just comprehension at a surface level (表层理解) or a medium level (中层理解), but a deeper engagement with the text that encourages critical thinking and reflection.23.The following sentences highlight the flexible use of grammar in English. Which sentence demonstrates the use of “have” and “has” to indicate possession?A. Harry/typescripts well.B. The books/on my desk are all new.C. She/have a cat named Lily.D. Her sister has a car.Answer: C.Explanation: The correct usage is “She has a cat named Lily” because “has” is used with “she,” the third-person singular pronoun.24.In English, adjectives can have comparative and superlative forms. Which sentence uses the superlative form to suggest that a particular class of students is the best in terms of punctuality?A. The chemistry students are more punctual than the biology students.B. The chemistry class is the most punctual at our school.C. The biology class is more punctual than most classes in our school.D. While chemistry students are punctual, biology students have a few late minutes.Answer: B.Explanation: The sentence “The chemistry class is the most punctual at our school” uses the superlative form “most punctual” to indicate that the chemistry class is the best or most punctual compared to other classes.25.Which of the following activities best promotes students’ comm unicative competence in an English language classroom?A)Memorizing vocabulary listsB)Reading silently from a textbookC)Engaging in role-play dialoguesD)Writing essays on given topicsAnswer: C) Engaging in role-play dialoguesExplanation: Communicative competence refers to the ability to use language appropriately in different social contexts. Role-play dialogues provide learners with opportunities to practice using language in a way that simulates real-life situations, which is essential for developing their ability to communicate effectively. The other options, while useful for building specific skills, do not directly promote the interactive and communicative aspects of language learning.26.In the context of teaching grammar, what does the term ‘form-focused instruction’ refer to?A)Teaching grammar rules as a separate subject without integrating them into languagepracticeB)Focusing solely on the accuracy of pronunciation and intonationC)Integrating attention to grammatical forms within the context of meaningfulcommunicationD)Encouraging students to learn grammar through trial and error without explicitguidanceAnswer: C) Integrating attention to grammatical forms within the context of meaningful communicationExplanation: Form-focused instruction is an approach to language teaching that involves drawing students’ attention to grammatical features during meaningful communication. This method aims to improve both form (the structure of the language) and meaning (the content of the message) simultaneously, thereby enhancing students’ overall language proficiency. It contrasts with approaches that treat grammar as an isolated set of rules or those that avoid direct instruction on grammar altogether.27.The teacher in the following scenario demonstrates which principle of classroom management?A)ConsistencyB)FlexibilityC)AutonomyD)ParticipationAnswer: A) ConsistencyExplanation: Consistency is a key principle of classroom management thatinvolves maintaining the same rules, expectations, and consequences for students. In the scenario, the teacher consistently applies the same rules and consequences, which helps to create a stable and predictable learning environment.28.Which of the following is an effective strategy for promoting student engagement in a reading activity?A)Reading the entire text aloud to the classB)Providing students with a list of vocabulary words to memorizeC)Encouraging students to work independently on a reading passageD)Asking students to predict the outcome of a story based on the title and illustrationsAnswer: D) Asking students to predict the outcome of a story based on the title and illustrationsExplanation: Encouraging students to predict the outcome of a story based on the title and illustrations is an effective strategy for promoting engagement because it activates their prior knowledge and encourages critical thinking. This activity also helps to build anticipation and interest in the text.29、Which of the following is NOT a principle of teaching pronunciation to high school students?(A) Emphasizing the phonetic environment and structural analysis.(B) Incorporating pronunciation practice into listening and speaking activities.(C) Using minimal pairs to distinguish similar sounds.(D) Focusing solely on spelling of words.Answer: (D) Focusing solely on spelling of words.解析: 教师在教授高中学生的英语发音时,不应仅强调单词的拼写,因为发音和拼写之间存在复杂的关系,而且强调拼写容易忽视发音的实际实践。
高中英语读后续写备考优质范文(第56-60篇)Learning English, especially reading and writing, is a crucial part of a high school student's academic journey. As we approach the final stretch of our high school years, it is important to reflect on the progress we have made and set our sights on continued improvement. In this essay, I will provide model essays that showcase effective strategies for tackling reading comprehension and writing assignments.Essay 56: Analyzing a Literary WorkLiterature analysis is a fundamental skill that allows us to delve deeper into the themes, characters, and literary devices employed by authors. In this essay, I will examine the novel "To Kill a Mockingbird" by Harper Lee. The story follows the journey of Scout Finch, a young girl living in the segregated South, as she navigates the complexities of racism, justice, and moral development.One of the key themes explored in the novel is the concept of moralcourage. The character of Atticus Finch, Scout's father, exemplifies this virtue as he stands up for the wrongfully accused Tom Robinson, despite facing social backlash and personal risk. Atticus' unwavering commitment to justice and his willingness to challenge the status quo serve as a powerful example of moral fortitude in the face of adversity.Another important theme is the loss of innocence. As Scout and her brother Jem witness the injustices and prejudices of their community, they are forced to confront the harsh realities of the world, leading to a gradual erosion of their childhood innocence. This theme is further explored through the character of Boo Radley, a reclusive neighbor whose true nature is misunderstood by the community.The novel's use of symbolism is also noteworthy. The mockingbird, a symbol of innocence and vulnerability, serves as a metaphor for the characters who are unjustly persecuted, such as Tom Robinson. The imagery of the tree in which Jem and Scout find gifts left by Boo Radley represents the gradual unveiling of the mysterious neighbor and the development of empathy and understanding.Overall, "To Kill a Mockingbird" is a powerful and thought-provoking work that explores timeless themes of justice, morality, and the human condition. By analyzing the novel's themes, characters, and literary devices, we can gain a deeper appreciation for thecomplexities of the human experience and the importance of standing up for what is right.Essay 57: Crafting a Persuasive EssayPersuasive writing is a crucial skill in both academic and professional settings. In this essay, I will delve into the strategies and techniques necessary to craft a compelling persuasive argument.The foundation of a strong persuasive essay lies in the development of a clear and well-reasoned thesis statement. This statement should articulate the central argument or position that the essay will aim to defend. A well-crafted thesis statement not only sets the tone for the essay but also provides a roadmap for the reader, guiding them through the key points and supporting evidence.Effective persuasive essays rely on a strategic use of rhetorical appeals: ethos, pathos, and logos. Ethos, or the credibility of the writer, can be established through the use of authoritative sources, personal expertise, and a demonstrated understanding of the topic. Pathos, or the emotional appeal, can be employed to evoke empathy, passion, or a sense of urgency in the reader. Logos, or the logical appeal, involves the presentation of well-researched facts, statistics, and reasoning to support the central argument.The structure of a persuasive essay is also crucial. A strongintroduction should capture the reader's attention and provide context for the argument. The body paragraphs should systematically present the supporting evidence, addressing counterarguments and refuting them effectively. The conclusion should reinforce the thesis statement, leaving the reader with a clear understanding of the writer's position and a sense of the essay's broader implications.Throughout the writing process, it is essential to maintain an objective and balanced tone. While the goal is to persuade the reader, the essay should avoid emotional language or logical fallacies. Instead, the writer should strive to present a well-reasoned and well-supported argument that appeals to the reader's intellect and sense of reason.By mastering the art of persuasive writing, students can develop a valuable skill that will serve them well in their academic pursuits, as well as in their future professional and personal endeavors. Through the strategic use of rhetorical appeals, a well-structured argument, and a balanced and objective tone, students can craft persuasive essays that effectively influence and inspire their readers.Essay 58: Analyzing a Nonfiction TextNonfiction texts, such as informative articles, biographies, and historical accounts, offer a wealth of knowledge and insight into theworld around us. In this essay, I will demonstrate the process of analyzing a nonfiction text, using the biography "Unbroken" by Laura Hillenbrand as an example."Unbroken" tells the remarkable story of Louis Zamperini, an Olympic runner who was captured by the Japanese during World War II and endured years of brutal treatment as a prisoner of war. The book is a testament to the resilience of the human spirit and the power of perseverance in the face of unimaginable adversity.One of the key elements to consider when analyzing a nonfiction text is the author's purpose and perspective. In "Unbroken," Hillenbrand's primary objective is to document Zamperini's extraordinary life and the harrowing experiences he endured during the war. The author's meticulous research and attention to detail lend credibility to the narrative, while her empathetic portrayal of Zamperini's struggles and triumphs elicits a powerful emotional response from the reader.Another important aspect of nonfiction analysis is the evaluation of the author's use of evidence and supporting details. Hillenbrand seamlessly weaves together historical facts, personal accounts, and vivid descriptions to create a comprehensive and immersive reading experience. The book's extensive use of primary sources, such as Zamperini's own memoirs and interviews, further strengthens thecredibility of the narrative.The structure and organization of the nonfiction text also warrant close examination. "Unbroken" follows a chronological timeline, allowing the reader to trace Zamperini's journey from his childhood in California to his captivity in Japan and eventual liberation. The author's skillful pacing and strategic use of foreshadowing keep the reader engaged and invested in the unfolding of events.Finally, the analysis of a nonfiction text should consider the broader implications and themes that emerge from the narrative. In the case of "Unbroken," the themes of resilience, redemption, and the human capacity for endurance are powerfully conveyed, inspiring readers to reflect on the extraordinary feats of the human spirit in the face of overwhelming adversity.By closely examining the author's purpose, use of evidence, structural elements, and thematic significance, students can develop a deeper understanding and appreciation for the richness and complexity of nonfiction texts. This analytical approach not only enhances their reading comprehension but also equips them with the critical thinking skills necessary to engage with a wide range of informative and thought-provoking literature.Essay 59: Crafting a Narrative EssayNarrative writing, with its focus on storytelling and personal experience, is a powerful tool for self-expression and communication. In this essay, I will explore the key elements and strategies involved in crafting an effective narrative essay.At the heart of a narrative essay lies the writer's personal experience or perspective. The essay should transport the reader into thewriter's world, allowing them to vicariously live through the events and emotions being described. To achieve this, the writer must employ vivid and descriptive language, painting a clear picture for the reader and engaging their senses.The narrative essay's structure typically follows a chronological timeline, guiding the reader through a series of events or a specific moment in time. The introduction should set the stage, establishing the context and introducing the central theme or conflict that will drive the narrative forward. The body paragraphs should then unfold the story, carefully selecting and sequencing the details to create a cohesive and engaging flow.One of the crucial elements of a successful narrative essay is the development of the central character, which is often the writer themselves. By delving into the character's thoughts, feelings, and motivations, the writer can create a relatable and empathetic protagonist that the reader can connect with on a deeper level. Theinclusion of dialogue, sensory descriptions, and introspective reflections can further enhance the reader's understanding of the character's experience.In addition to the character development, the narrative essay should also incorporate vivid and evocative descriptions of the setting and surrounding environment. The writer should strive to transport the reader to the specific time and place, using sensory details to create a immersive and memorable reading experience.The conclusion of the narrative essay should leave a lasting impression on the reader, either by resolving the central conflict, reflecting on the significance of the experience, or drawing a larger, universal lesson from the personal narrative. This final section should tie together the essay's themes and leave the reader with a sense of closure or a deeper understanding of the writer's perspective.By mastering the art of narrative writing, students can develop a powerful tool for self-expression, creativity, and effective communication. Through the strategic use of storytelling techniques, vivid descriptions, and character development, narrative essays can captivate readers and convey meaningful insights about the human experience.Essay 60: Analyzing a Visual TextIn today's multimedia-driven world, the ability to critically analyze visual texts, such as images, infographics, and advertisements, has become an increasingly important skill. In this essay, I will demonstrate the process of analyzing a visual text, using a thought-provoking political cartoon as an example.The selected cartoon depicts a series of figures, each representing a different country or region, standing in a line and holding hands. However, the figure representing the United States is noticeably taller than the others, towering over them and casting a long shadow. This visual metaphor immediately suggests a power imbalance and a sense of dominance or control exercised by the United States over the other nations.One of the key elements to consider in the analysis of a visual text is the use of symbolism and iconography. In this cartoon, the varying sizes and positioning of the figures serve as powerful symbols, conveying complex ideas about global power dynamics and the perceived influence of the United States on the international stage. The artist's strategic use of scale and placement effectively communicates a message about the disproportionate influence and perceived hegemony of the US over other nations.Another important aspect of visual text analysis is the examination of color, tone, and composition. In the case of this political cartoon, themuted, earthy tones and the stark contrast between the figures create a somber and contemplative mood, suggesting a sense of unease or discomfort with the depicted power dynamics. The overall composition, with the figures arranged in a linear formation, further reinforces the notion of a hierarchical structure and the imbalance of power.The interpretation of a visual text should also consider the broader context in which it was created and the potential messages or commentary it aims to convey. In the context of this political cartoon, the artist may be critiquing the perceived hegemonic influence of the United States on global affairs, or perhaps highlighting the need for a more equitable and balanced distribution of power on the international stage.By carefully analyzing the visual elements, symbolism, and contextual factors, students can develop a deeper understanding of the underlying messages and perspectives conveyed in a visual text. This analytical approach not only enhances their critical thinking skills but also equips them with the tools necessary to navigate and interpret the increasingly visual-centric landscape of modern communication and media.。
材料科学与工程-专业英语-Unit--Classification-of-Ma terials译文————————————————————————————————作者:————————————————————————————————日期:Classification of Materials(材料分类)Solid materials have been conveniently grouped into three basic classifications: metals, ceramics, and polymers. This scheme is based primarily on chemical makeup and atomic structure, and most materials fall into one distinct grouping or another, although there are some intermediates. In addition, there are three other groups of important engineering materials—composites, semiconductors, and biomaterials.译文:固体材料被便利的分为三个基本的类型:金属,陶瓷和聚合物。
这个分类是首先基于化学组成和原子结构来分的,大多数材料落在明显的一个类别里面,尽管有许多中间品。
除此之外,有三类其他重要的工程材料-复合材料,半导体材料和生物材料。
Composites consist of combinations of two or more different materials, whereas semiconductors are utilized because of their unusual electrical characteristics; biomaterials are implanted into the human body. A brief explanation of the material types and representative characteristics is offered next.译文:复合材料由两种或者两种以上不同的材料组成,然而半导体由于它们非同寻常的电学性质而得到使用;生物材料被移植进入人类的身体中。
engineering structures字数Engineering Structures – A comprehensive guide to understanding and designing safe and reliable structuresIntroduction:Engineering structures play a crucial role in our daily lives, providing safety and stability to buildings, bridges, and other constructions. This article aims to provide a comprehensive guide to understanding and designing engineering structures, ranging from the fundamental concepts to intricate design considerations. Whether you are an aspiring engineer or simply interested in the subject, this article will walk you through the step-by-step process of creating safe and reliable structures.Section 1: Basics of Engineering Structures1.1 Definition and Importance:Engineering structures are the physical infrastructure that supports the built environment. They provide a framework for our cities, connecting people, and enabling various activities. Structures must be able to withstand various forces, includinggravity, weather conditions, and human activities, ensuring the safety and stability of the construction.1.2 Categories of Engineering Structures:Engineering structures can be broadly categorized into buildings, bridges, dams, tunnels, and maritime structures. Each category has its unique set of design considerations and challenges.Section 2: Design Considerations2.1 Structural Analysis:Before embarking on the design process, engineers must conduct a thorough analysis of the structure. This involves understanding the expected loads, such as dead loads (self-weight), live loads (occupants, furniture), and environmental loads (wind, snow). Software tools, such as Finite Element Analysis (FEA), assist engineers in simulating and predicting structural behavior.2.2 Material Selection:Choosing the appropriate material is critical to ensure the structural integrity of a construction. Common structural materials include steel, concrete, timber, and composites. Factors such asstrength, durability, cost, and suitability for specific applications need to be considered during the selection process.2.3 Structural Systems:The choice of a structural system depends on various factors, including the intended use of the structure, aesthetics, and budget. Common systems include frame structures (steel or reinforced concrete), arches, shells, and trusses, each with its advantages and limitations.2.4 Structural Elements:Structural elements, such as beams, columns, slabs, and foundations, work together to provide strength and support to the structure. Engineers must design these elements to resist the expected loads and distribute them effectively to prevent overloading or failure.Section 3: Design Process3.1 Preliminary Design:During the initial phase, engineers sketch conceptual designs to meet the project's requirements, considering factors likeaesthetics, functionality, and safety. This stage involves evaluating alternative solutions and selecting the most feasible option.3.2 Detailed Design:In this stage, engineers generate detailed drawings, specifications, and calculations to ensure that the structure meets the required standards and regulations. Structural software and computer-aided design (CAD) tools assist in producing accurate and efficient designs.3.3 Construction and Quality Control:During construction, engineers oversee the execution of the design, ensuring that the plans are followed correctly. Regular inspections and quality control checks help to identify and rectify any errors or discrepancies to maintain the structural integrity.Section 4: Lateral Forces and Structural Stability4.1 Wind Loads:Wind exerts significant forces on structures, especially tall buildings and bridges. Proper analysis and design to withstand these forces are crucial to ensure stability and safety.4.2 Seismic Loads:In earthquake-prone regions, structures must be designed to withstand the ground motion generated during seismic events. Careful consideration of the structural response to seismic loads, including lateral forces and dynamic effects, is essential.4.3 Foundation Design:The design of a stable foundation is critical to support the entire structure. Factors such as soil conditions, load-bearing capacity, and settlement must be considered to prevent any structural failure.Conclusion:Engineering structures are the backbone of our built environment. Understanding their design principles and the factors that contribute to their stability and safety is crucial for engineers and designers. This article has provided a step-by-step guide from the basics of engineering structures to the intricate design considerations involved in creating safe and reliable constructions.By adhering to proper analysis, material selection, and design techniques, engineers can ensure the longevity and functionality of these structures, contributing to a safer and more sustainable future.。
A. Rauber et al. (Eds.): ECDL 2005, LNCS 3652, pp. 368 – 378, 2005.© Springer-Verlag Berlin Heidelberg 2005Importance of HTML Structural Elements andMetadata in Automated Subject ClassificationKoraljka Golub and Anders ArdöKnowledge Discovery and Digital Library Research Group (KnowLib),Digital Information Systems, Department of Information Technology, Lund University ,P.O. Box 118, 22 100 Lund, Sweden {anders.ardo, koraljka.golub}@it.lth.sehttp://www.it.lth.se/knowlib/Abstract. The aim of the study was to determine how significance indicatorsassigned to different Web page elements (internal metadata, title, headings, andmain text) influence automated classification. The data collection that was usedcomprised 1000 Web pages in engineering, to which Engineering Informationclasses had been manually assigned. The significance indicators were derivedusing several different methods: (total and partial) precision and recall, seman-tic distance and multiple regression. It was shown that for best results all theelements have to be included in the classification process. The exact way ofcombining the significance indicators turned out not to be overly important: us-ing the F1 measure, the best combination of significance indicators yielded nomore than 3% higher performance results than the baseline.1 IntroductionAutomated subject classification has been a challenging research issue for several decades now, a major motivation being high costs of manual classification. The inter-est rapidly grew around 1997, when search engines couldn’t do with just full-text retrieval techniques, because the number of available documents grew exponentially. Due to the ever-increasing number of documents, there is also a danger that recog-nized objectives of bibliographic systems (finding, collocating, choice, acquisition, navigation) ([19], p. 20-21) would get left behind; automated means could be a solu-tion to preserve them (ibid., p. 30). Automated subject classification of text finds its use in a wide variety of applications, such as: organizing documents into subject cate-gories for topical browsing, which includes grouping search results by subject; topical harvesting; personalized routing of news articles; filtering of unwanted content for Internet browsers; and, many others (see [17], [12]).A frequent approach to Web-page classification has been a bag-of-words represen-tation of a document, in which all parts of a Web page are considered to be of equal significance. However, unlike other text documents, Web pages have certain charac-teristics, such as internal metadata, structural information, hyperlinks and anchors, which could serve as potential indicators of subject content. For example, words from title could be more indicative of a page’s content than headings. The degree to whichImportance of HTML Structural Elements and Metadata 369 different Web page elements are indicative of its content is in this paper referred to as significance indicator.With the overall purpose of improving our classification algorithm (see section 2.3), the aim was to determine the importance of distinguishing between different parts of a Web page. Significance of four elements was studied: title, headings, meta-data, and main text.The paper is structured as follows: in the second chapter a literature review is given, evaluation issues are discussed and the algorithm used is described (2 Back-ground); in the third chapter data collection as well as methodology for deriving sig-nificance indicators are described (3 Methodology); deriving and testing the signifi-cance indicators is presented in chapter 4 (4 Significance indicators). The paper ends with conclusions and further research (5 Conclusion).2 Background2.1 Related WorkA number of issues related to automated classification of documents and significance of their different parts have been explored in the literature. A. Kolcz, V. Prabakar-murthi, J. Kalita and J. Alspector [14] studied news stories features and found out that initial parts of a story (headline and first two paragraphs) give best results, reflecting the fact that news stories are written so as to capture readers’ attention. J. Pierre [16] gained best results in targeted spidering when using contents of keywords and de-scription metatags as the source of text features, while body text decreased classifica-tion accuracy. R. Ghani, S. Slattery & Y. Yang [10] also showed that metadata can be very useful for improving classification accuracy. A. Blum & T. Mitchell [4] com-pared two approaches, one based on full-text, and one based on anchor words pointing to the target pages, and showed that anchor words alone were slightly less powerful than the full-text alone, and that the combination of the two was best. E. Glover et al.[11] claimed that text in citing documents close to the citation often had greater dis-criminative and descriptive power than text in target documents. Similarly, A. Attardi, A. Gulli & F. Sebastiani [3] also used information from the context where a URL that refers to that document appears and got encouraging results. J. Fürnkranz [9] used portions of texts from all pages that point to the target page: the anchor text, the head-ings that structurally precede it, the text of the paragraph in which it occurs, and a set of (automatically extracted) linguistic phrases that capture syntactic role of the anchor text in the paragraph; headings and anchor text proved to be most useful.On the other hand, R. Ghani, S. Slattery & Y. Yang [10] claim that including words from linked neighborhoods should be done carefully since the neighborhoods could be rather “noisy”. Different data collections contain Web pages of various char-acteristics. If certain characteristics are common to the majority of Web pages in the collection, an appropriate approach taking advantage of those could be applied, but if the Web pages are very heterogeneous, it is difficult to take advantage of any of the Web-specific characteristics (cf. [22], [8], [18]).370 K. Golub and A. Ardö2.2 Evaluation ChallengeThe problem of deriving the correct interpretation of a document's subject matter has been much discussed in the library science and related literature. It has been reported that different people, whether users or subject indexers, would assign different subject terms or classes to the same document. Studies on inter-indexer and intra-indexer consistency report generally low indexer consistency ([15], p. 99-101). There are two main factors that seem to affect it: 1) higher exhaustivity and specificity of subject indexing both lead to lower consistency (indexers choose the same first term for the major subject of the document, but the consistency decreases as they choose more classes or terms); 2) the bigger the vocabulary, or, the more choices the indexers have, the less likely they will choose the same classes or terms (ibid.).In this study we start from the assumption that manual classes in our data collec-tion are correct, and compare results of automated classification against them. The classification system used in the study is Engineering Information (Ei), which is rather big (around 800 classes) and deep (five hierarchical levels), allowing many different choices. Without a thorough qualitative analysis of automatically assigned classes we cannot be sure if the classes assigned by the algorithm, which were not manually assigned, are actually wrong.2.3 Description of the AlgorithmThis study is based on an automated classification approach [2] that has been devel-oped within the DESIRE project [6] to produce “All” Engineering [1], an experimen-tal module of the manually created subject gateway Engineering Electronic Library (EELS) [7] (no longer maintained).The algorithm classifies Web pages into classes of the Ei classification system. Mappings exist between the Ei classes and Ei thesaurus descriptors; both the captions of classes and the descriptors are matched against extracted title, headings, metadata, and main text of a Web page. Each time a match is found, the document is assigned the corresponding class, which is awarded a relevance score, based on which term is matched (single word, phrase, Boolean), the type of class matched (main or optional) (weight[term]), and the part of the Web page in which the match is found (weight[loc]). A match of a phrase (a number of words in exact order) or a Boolean expression (all terms must be present but in any order) is made more discriminating than a match of a single word; a main class is made more important than an optional class (in the Ei thesaurus, main class (code) is the class to use for the term, while optional class (code) is to be used under certain circumstances). A list of suggested classes and corresponding relevance scores (S) is produced using the following algo-rithm:S =∑locs (∑terms( freq[loc j][term i] * weight[term i] * weight[loc j] ) ). (1)Only classes with scores above a pre-defined cut-off value (cf. section 4.5) are selected as the classes for the document. Having experimented with different ap-Importance of HTML Structural Elements and Metadata 371proaches for stemming and stop-word removal, the best results were gained when an expanded stop-word list was used, and stemming was not applied. For more informa-tion on the algorithm, see [2] and [13].3 Methodology3.1 Data CollectionThe data collection used in the study comprises a selection of Web pages from the EELS subject gateway [7]. EELS Web pages have been selected and classified by librarians for end users of the gateway.For the study, only pages in English were kept, the reason being that Ei captions and descriptors are in English. Also, some other pages were removed because they contained very little or no text. (The problem of pages containing hardly any text could be dealt with in the future, by propagating the class obtained for their subordi-nate pages.) The final data collection consisted of 1003 Web pages in the field of engineering.The data were organized in a relational database. Each document in the database was assigned Ei classes derived from the following elements:•title (Title);•headings (Headings);•metadata (Metadata); and,•page’s main text (Text).Each class was automatically assigned a score indicating the degree of certainty that it is the correct one. Every document also had manually assigned Ei classes (Manual), against which the automatically assigned classes were compared.3.2 Methods for Evaluation and Deriving Significance IndicatorsVarious measures have been used to evaluate different aspects of automated classifi-cation performance [21]. Effectiveness, the degree to which correct classification decisions have been made, is often evaluated using performance measures from in-formation retrieval, such as precision and recall, and F1 measure being the harmonic mean of the two. Solutions have also been proposed to measure partial overlap, i.e. the degree of agreement between correct and automatically assigned classes (see, for example, [5]).In this study, three methods have been used for evaluating and deriving the signifi-cance of different Web-page elements:1.total and partial precision, recall, and F1 measures (using macroaveraging);2.semantic distance; and,3.multiple regression.372 K. Golub and A. Ardö1. The Ei classification system has a solid hierarchical structure, allowing for a rather credible test on partial overlap. Three different levels of overlap were tested: total overlap; partial overlap of the first three digits, e.g. “932.1.” and “932.2.” are considered the same; and, partial overlap of the first two digits, e.g. “932” and “933” are considered the same. Partial overlap of the first four digits has not been conducted because there were few classes of five-digit length in the data collection.2. In the literature, different similarity measures have been used for hypermedia navigation and retrieval (see, for example, [20]). Semantic distance, a numerical value representing the difference in meaning between two concepts or terms, is one of them. There are different ways in which to calculate it. For example, the measure of clicking distance in a directory-browsing tree can be used. We used the hierarchical structure of the Ei classification system as the means of obtaining the following (rather arbi-trary) measures of semantic distance between any two classes:•4, when the classes differ already in the first digit (e.g. 601 vs. 901);•2, when the classes differ already in the second digit (e.g. 932 vs. 901);•1, when the classes differ in the third digit (e.g. 674.1 vs. 673.1); and•0.5, when the classes differ in the fourth digit (e.g. 674.1 vs. 674.2).Those values reflect how the hierarchical system is structured; e.g. we say that class 6 and class 7 are more distant from each other than classes 63 and 64, which are in turn more distant in meaning than 635.1 and 635.2.Calculations were conducted using the average distance between manually and automatically assigned classes. For each document, average distances were calculated for each of the four elements, and then the values were averaged for all the docu-ments. When there was more than one manually assigned class per document, the semantic distance was measured between an automatically assigned class and that manually assigned class which was most similar to the automatically assigned one.3. Multiple regression was used in a rather simplified way: scores assigned based on individual elements of a Web page were taken as independent variables, while the final score represented the dependent variable. The dependent variable was set to either 1000 or 0, corresponding to a correct or an incorrect class respectively.4 Significance Indicators4.1 GeneralIn Table 1 basic classification characteristics and tendencies of our data collection are given. All the documents (1003) have at least one, and no more than six manually assigned classes, the majority having up to three classes. Manual assignment of classes was based on collection-specific classification rules.Concerning automatically assigned classes based on different parts of a page, not all the pages have classes based on all of them. Classes based on text are assigned to the majority of documents, while those based on metadata to the least number of documents. Based on only title, headings, or metadata, less than 50% of the docu-ments would get classified at all. On the average, per every document there are twoImportance of HTML Structural Elements and Metadata 373manually assigned classes, two classes based on title, four based on headings, ninebased on metadata, and some 18 classes based on text.In the whole collection there are 753 different classes assigned, either manually or automatically. The largest variety comes from the group of classes assigned based ontext (675), which is more than twice as many as manually assigned (305).Table 1. Distribution of classes in the data collection. First data row shows how many docu-ments have been classified, second row how many classes have been assigned in the whole ofthe data collection, and the last row how many different individual classes, out of some 800possible, have been assigned.HeadingsTextMetadata ManualTitleNumber of classified doc. 1003 411 391 260 964In the data collection 1943 827 1504 2227 17089Different classes 305 174 329 406 6754.2 Precision and RecallFig. 1. shows the degree of automated classification accuracy when words are takensolely from the four different parts of the Web page. While title tends to yield best precision, which is 27% more than the worst element (text), text gives the best recall,but only 9% more than the worst element (title). Precision and recall are averagedusing the F1 measure, according to which title performs the best (35%), closely fol-lowed by headings (29%), metadata (21%) and text (15%).Fig. 1. Precision, recall and F1 measure374 K. Golub and A. ArdöPartial Precision and Recall. When testing the algorithm performance for partial overlap (Fig. 2.), precision and recall for all parts of a Web page give much better results (title in 2-digit overlap achieves 59%). The ratio between their performance forboth two- and three-digit overlap is the same as for total overlap: title performs the best, followed by headings, metadata and text.Fig. 2. F1-measure values for total overlap, 3-digit and 2-digit overlap4.3 Semantic DistanceUsing the semantic distance method, the calculations (Table 2) show that automati-cally assigned classes are on the average wrong in the third and second digits. Justlike precision and recall results for partial overlap (cf. section 4.2), best results (smallest semantic distances) are achieved by title, followed by headings, metadataand text.Table 2. Semantic distanceTextMetadataTitleHeadingsMean distance 1,3 1,7 1,8 2,24.4 Deriving Significance IndicatorsAs we have seen in section 4.1, not every document has all the four elements contain-ing sufficient terms for automated classification. Thus, in order to get documents classified, we need to use a combination of them. How to best combine them has been experimented with in this section, by applying results gained in evaluation using theF1 measure, semantic distance, and multiple regression.Importance of HTML Structural Elements and Metadata 375 The symbols used in formulae of this section are:•S – final score for the automatically assigned class;•STi – score for the automatically assigned class based on words in Title;•SH – score for the automatically assigned class based on words in Headings; •SM – score for the automatically assigned class based on words in Metadata; and, •STe – score for the automatically assigned class based on words in Text.The baseline, in which all the elements have equal significance, is represented with the following formula:S = STi + SH + SM + STe . (2) Based on evaluation results, the following co-efficients, representing significance indicators, have been derived (the co-efficients were normalized by reducing the smallest co-efficient to one and by rounding others to integer values):I. Based on total overlap and F1 measure values:S = 2*STi + 2*SH + SM + STe . (3) These co-efficients have been derived by simply taking the F1 measure values of each of the algorithms (cf. Fig. 1). The same co-efficients have also been derived using partial overlap, the only difference being that the co-efficient for SM was two, both in two- and three-digit overlap.II. Based on multiple regression, with scores not normalized for the number of words contained in title, headings, metadata, and text:S = 86*STi + 5*SH + 6*SM + STe . (4) III. Based on multiple regression, with scores normalized for the number of words contained in title, headings, metadata, and text:S = STi + SH + SM + 5*STe . (5) IV. On the basis of semantic distance results, the best significance indicator performs less than twice as well as the worst one, so all co-efficients are almost equal, as in (2).4.5 EvaluationDefining a Cut-Off. As described in section 2.3, each document is assigned a number of suggested classes and corresponding relevance scores. Only a few classes with best376 K. Golub and A. Ardöscores, those above a certain cut-off value, are finally selected as the classes repre-senting the document.Different cut-offs, that would give best precision and recall results, were experi-mented with. Also, the number of documents that would be assigned at least one class, and the number of classes that would be assigned per document, were taken into consideration. Best results were achieved when the final classes selected were those with scores that contained at least 5% of all the scores assigned to all the classes, or, if such a class hadn’t existed, the class with the top score was selected. In this case, F1 was 27%, there were about 4000 classes assigned as final, and all documents were classified. This is the cut-off we used in the study.Results. As seen from Table 3, the evaluation showed that different significance indi-cators make hardly any difference in terms of classification algorithm performance. Co-efficients in (3) and (5) are similar to the ones in the baseline (2), and, compared to the baseline (2), which performs 23% in F1, normalized multiple regression (5) performs worse by 1%, while the formula based on F1 measure (3) performs the same. The best result was achieved using non-normalized multiple regression (4), which performs by 3% better than the baseline. This formula gives big significance indicator to classes that were assigned based on the title.Table 3. Results of applying different co-efficients as significance indicatorsBaseline (2)F1 (3) Regression (4)Regression N. (5) Precision 16% 17% 21% 16% Recall 39% 39% 35% 38% F1 23% 23% 26% 22% Number of pages 1003 1003 1003 1003Number of classes 5174 5063 4073 51475 ConclusionThe aim of this study was to determine the significance of different parts of a Web page for automated classification: title, headings, metadata, and main text. The sig-nificance indicators were derived using several different methods: (total and partial) precision and recall, semantic distance, and multiple regression. The study showed that using all the structural elements and metadata is necessary since not all of them occur on every page. However, the exact way of combining the significance indica-tors turned out not to be highly important: the best combination of significance indica-tors is only 3% better than the baseline.Reasons for such results need to be further investigated. One could guess that this is due to the fact that the Web pages in our data collection were rather heterogeneous; on the other hand, they were selected by librarians for end users of an operational service, and as such they might indicate what such Web-page collections are like. Apart from heterogeneity, the problem could be that metadata were abused, and thatImportance of HTML Structural Elements and Metadata 377certain tags were misused (e.g. instead of using appropriate tags for making text bold, one used a headings tag, which has the same effect on the screen).Concerning evaluation of automated classification in general, further research is needed to determine the true value of the classification results. To that purpose infor-mation specialists and users could be involved, to compare their judgments as to which classes are correctly assigned. Also, in order to put the evaluation of classifica-tion into a broader context, a user study based on different information-seeking tasks would be valuable.Other related issues of further interest include:•determining significance of other elements, such as anchor text, location at the beginning of the document versus location at the end, etc.;•comparing the results with new versions of the Web pages in the collection, e.g.maybe the quality of titles improves with time, and structural tags or metadata get less misused etc.; and,•experimenting with other Web page collections.AcknowledgementsThe research was funded by ALVIS, an EU Sixth Framework Programme, Informa-tion Society Technologies (IST-1-002068-STP), and The Swedish Agency for Inno-vation Systems (P22504-1 A).References1.“All” Engineering Resources on the Internet: A Companion Service to EELS. 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