康桥国际学校自然与生活科技第四册3及2节角落学习1选择1
2024年精彩教案精彩课件典范英语6a l12教学参考
一、教学内容本节课选自典范英语6A教材第12课，主题为“2024年的生活”。
教学内容详细涵盖未来生活的各个方面，包括科技发展、环境保护、人际交流等。
具体章节内容涉及：1. 科技改变生活；2. 绿色地球，从我做起；3. 沟通无国界。
二、教学目标1. 了解2024年未来生活的各个方面，提高学生对科技、环保和沟通的认识。
2. 掌握本节课的重点词汇和句型，提升学生的英语表达能力。
3. 培养学生的创新意识和环保意识，激发他们对未来的向往和探索。
三、教学难点与重点教学难点：词汇的准确运用和句型的熟练掌握。
教学重点：对未来生活的理解和表达，以及环保意识的培养。
四、教具与学具准备教师准备：PPT课件、黑板、粉笔、单词卡片。
学生准备：英语课本、笔记本、彩色笔。
五、教学过程1. 导入：通过展示2024年的科技图片，引发学生对未来生活的思考，激发他们的学习兴趣。
2. 新课内容呈现：a. 学习词汇：教师展示单词卡片，引导学生学习并掌握新词汇。
b. 句型练习：教师通过PPT展示句型，组织学生进行句型练习。
c. 对话展示：学生分角色朗读对话，熟悉课文内容。
3. 例题讲解：针对本节课的重点知识点，教师进行详细讲解和示范。
4. 随堂练习：学生完成课后练习，巩固所学知识。
5. 小组讨论：学生分组讨论，探讨未来生活中的科技、环保和沟通等方面的问题，并提出自己的看法和建议。
六、板书设计板书分为三部分：1. 2024年的生活2. 重点词汇：科技、环保、沟通等。
3. 重点句型：What will our life be like in 2024? How can we protect the environment?七、作业设计1. 作业题目：以“2024年的生活”为主题，写一篇短文，不少于80词。
2. 作业答案：例文如下：八、课后反思及拓展延伸本节课结束后，教师应反思教学效果，针对学生的掌握情况，调整教学策略。
同时，鼓励学生课后关注科技、环保和沟通等领域的新闻和资讯，拓展知识面，提高综合素质。
高考英语一轮复习模块知识选择性必修第四册UNIT1 SCIENCE FICTION练习含答案
UNIT 1SCIENCE FICTIONⅠ.完形填空It’s hard to believe my husband and I will be celebrating our 11th wedding anniversary this year，but I still remember our honeymoon clearly.After our 1，we flew to Mexico for our honeymoon. We stayed at a beautiful hotel on the east coast facing a beautiful sea and we had a(n)2time！The weather was perfect，locals were friendly，and we had plenty of things to 3while we were there.At the top of our list of 4was to swim with dolphins. There was a place down there called Dolphin Discovery，and it was included within our honeymoon 5. We headed over there one afternoon and were 6with the place. The dolphins looked well kept and happy.The employees told us that the dolphins 7interacting with us humans as it entertained them and gave them exercise. They were social animals and loved to play. They spent about 30 minutes 8us all about these wonderful animals. Then it was our group’s 9.We 10clothes and got into the pool. We were given clear 11so that we could swim with the dolphins as a couple. Gradually，the dolphins 12us，so it was a great chance for my husband and me to 13them closer —they were so cute and lovely. It 14let me appreciate dolphins more and made me realise how 15it was to save and protect them.1.A.adventure B.appointmentC.graduationD.wedding2.A.anxious B.goodC.strictD.ordinary3.A.enjoy B.protectC.spreadD.avoid4.A.experiments B.performancesC.bargainsD.activities5.A.package B.regretC.prizeD.invention6.A.careful B.pleasedC.familiarD.bored7.A.stayed away from B.broke up withC.put up withD.looked forward to8.A.selling B.lendingC.tellingD.posting9.A.gift B.recipeC.turnD.risk10.A.made B.changedC.donatedD.designed11.A.instructions B.destinationsC.connectionsbinations12.A.challenged B.attackedC.approachedD.controlled13.A.feed B.trainC.observeD.catch14.A.merely B.casuallyC.barelyD.really15.A.significant plexC.hopefulD.confusing【语篇解读】本文是一篇记叙文。
剑桥国际英语教程4答案unit7
剑桥国际英语教程4答案unit71、Becky is having a great time ______ her aunt in Shanghai. （）[单选题] *A. to visitB. visitedC. visitsD. visiting(正确答案)2、The red jacket is _______ than the green one. [单选题] *A. cheapB. cheapestC. cheaper(正确答案)D. more cheap3、Our teacher suggested that each of us _____ a study plan for the tong summer vacation. [单选题] *A. make(正确答案)B. madeC. will makeD. would make4、( ) What other books have you read___ this English novel? [单选题] *A. besides(正确答案)B. exceptC.inD. about5、Li Lei often takes a walk early ______ the morning.（）[单选题] *A. atB. onC. in(正确答案)D. for6、_______, making some DIY things is fashionable. [单选题] *A. Stand outB. In ones opinionC. In my opinion(正确答案)D. Out of fashion7、My home is about _______ away from the school. [单选题] *A. three hundred metreB. three hundreds metresC. three hundred metres(正确答案)D. three hundreds metre8、He has bought an unusual car. [单选题] *A. 平常的B. 异常的(正确答案)C. 漂亮的D. 废弃的9、Reading（）the lines, I dare say that the government are more worried than they admitted. [单选题] *A. behindB. between(正确答案)C. alongD. among10、I _______ Zhang Hua in the bookstore last Sunday. [单选题] *A. meetB. meetingC. meetedD. met(正确答案)11、Every morning John takes a（）to his office. [单选题] *A. 20-minutes' walkB. 20 minute ' walkC. 20-minutes walkD. 20-minute walk(正确答案)12、48．—________ is your new skirt, Lingling?—Black. [单选题] *A．HowB．What colour(正确答案)C．WhichD．Why13、There is a popular belief _____schools don’t pay any attention to spelling. [单选题] *A.that(正确答案)B.whichC.whatD.whose14、He always found it hard to satisfy himself. [单选题] *A. 控制B. 满足(正确答案)C. 了解D. 批评15、—______ —（）[单选题] *A. How long did you stay there?B. How much did you pay for the dress?C. How many flowers did you buy?(正确答案)D. How often did you visit your grandparents?16、You cannot see the doctor _____ you have made an appointment with him. [单选题] *A. exceptB.evenC. howeverD.unless(正确答案)17、You should take the medicine after you read the _______. [单选题] *A. linesB. wordsC. instructions(正确答案)D. suggestions18、--_______ do you have to do after school?--Do my homework, of course. [单选题] *A. What(正确答案)B. WhenC. WhereD. How19、My dog is very _______. It is safe to touch it if you want to. [单选题] *A. luckyB. deliciousC. friendly(正确答案)D. helpful20、E-mail is _______ than express mail, so I usually email my friends. [单选题] *A. fastB. faster(正确答案)C. the fastestD. more faster21、One thousand dollars a month is not a fortune but at least can help cover my living（）. [单选题] *A. billsB. expenses(正确答案)C. pricesD. charges22、7．—________ is the Shanghai Wild Animal Park?—It’s 15km east of the Bund. [单选题] *A．WhoB．WhatC．WhenD．Where (正确答案)23、I’d like to go with you, ______ I’m too busy. [单选题] *A. orB. andC. soD. but(正确答案)24、How _______ it rained yesterday! We had to cancel(取消) our football match. [单选题] *A. heavily(正确答案)B. lightC. lightlyD. heavy25、I will _______ at the school gate. [单选题] *A. pick you up(正确答案)B. pick up youC. pick you outD. pick out you26、The manager gave one of the salesgirls an accusing look for her（）attitude towards customers. [单选题] *A. impartialB. mildC. hostile(正确答案)D. opposing27、The classmates can' t（）Alice from her twin sister. [单选题] *A. speakB. tell(正确答案)C. talkD. say28、Tom’s sister is a nurse. I met _______ in the street yesterday . [单选题] *A. sheB. hersC. himD. her(正确答案)29、She works in a hospital. She is a(n) _______. [单选题] *A. managerB. engineerC. doctor(正确答案)D. patient30、Guilin is _______ its beautiful scenery. [单选题] *A. famous for(正确答案)B. interested inC. fond ofD. careful with。
2023人教版高中英语选择性必修四教材答案
2023人教版高中英语选择性必修四教材答案Unit 1 Living with technologySection A1.B2.A3.C4.C5.BSection B1.D2.A3.B4.C5.ASection C1.A2.C3.B4.D5.CUnit 2 Health and wellness Section A1.C2.B3.A4.D5.CSection B1.D2.C3.B4.A5.DSection C1.A2.B3.C4.D5.BUnit 3 Environment and sustainability Section A1.D2.C3.B4.A5.DSection B1.B2.C3.D5.BSection C1.A2.C3.D4.B5.DUnit 4 Cultural exchange Section A1.C2.B3.A4.D5.CSection B1.D3.A4.B5.DSection C1.B2.C3.A4.D5.DUnit 5 Personal finance Section A1.C2.A3.D4.B5.CSection B1.B2.C3.A4.D5.CSection C1.D2.A3.B4.C5.DUnit 6 Social issues Section A1.B2.A3.C4.D5.BSection B1.C2.A3.D4.B5.CSection C1.D2.B3.C4.A5.D这是2023年人教版高中英语选择性必修四教材的答案。
每个单元分为A、B、C三个部分。
每个部分包含了5个小题的选择题答案。
请同学们使用这些答案来检查自己在学习过程中的理解和记忆。
注意，这里仅提供了选择题的答案。
对于其他类型的题目，如阅读理解、完形填空、改错等，请参考教材中的答案或咨询老师。
希望这些答案对同学们有所帮助，祝大家学习进步！。
Unit4MeetingthemuseDevelopingideas教学设计--2023-2024学
选择性必修一Unit 4 Meeting the muse Developing ideas: Art &Technology【主题语境】人与社会艺术的灵感【语篇类型】书面语篇说明文【语篇研读】本版块呈现了从另一角度反映单元主题的课文，介绍了美国艺术家Janet Echelman的“技术流”作品，艺术与现代科技相结合的数字版《清明上河图》等，探讨了艺术和科技之间的关系。
本语篇结构脉络清晰，辩证地剖析了科技对于艺术正反两方面的影响，并提供了丰富的实例支撑。
适合通过思维导图，梳理文章内容结构，并延伸出相关的辩论活动，引导学生思考科技给艺术领域带来的改变，以及如何看待这些改变，更好地激发学生的思辨能力和语言表达能力，提升学生对于该话题的学习兴趣，实现知识和思维能力的拓展和迁移。
【学情分析】本节课的授课对象是普通高中二年级学生。
本班大部分学生英语基础较好，学习态度较认真。
学生已基本具备在阅读中提取细节信息的能力，部分学生能用英语自信流利地表达观点。
但多数学生在分析论证观点以及批判性思维方面的能力比较欠缺。
此外，虽然学生对于艺术和科技这两个词很熟悉，但对二者的关系缺乏系统地思考和辩证地认知。
在本节课授课之前，学生已经学习了本单元的第一个语篇内容，对于艺术品及艺术灵感来源这一主题语境有了一定的了解。
【教学目标】At the end of the class, students will be able to:the author’s propose in writing the passage.a thorough analysis of the text in terms of rhetorical devices, content and structure.a proper attitude towards the relationship between art and technology, and offer insights into practical issues related.【教学重难点】1.引导学生分析语篇，梳理文章结构，提取关键信息。
2024年中考英语新课标话题综合突破—科学与技术-(B卷)
2024年中考英语新课标话题综合突破—科学与技术(B卷)一、完形填空A(2024·广东珠海·一模)Chinese scientists said they had developed robotic fish that could“eat”microplastics(微塑料)while moving through the water.Researchers working on the project say the robots could be1in cleaning up plastic pollution in oceans.The project was2by a team at Sichuan University in southwestern China.The researchers said the robots had already performed well in shallow(浅的)water and that they planned to carry out more tests in3 water.The team said the robotic fish could be4by light.Turning on and off the near-infrared light laser(近红外激光)causes the fish’s tail to move.It can swim at a5of about3.5cm per second.Wang Yuyan was a member of Sichuan University’s research team.She told Reuters that the small robotic fish were being used to6microplastics for research purposes.But Wang added that the team planned to expand (扩展)that use,so the robotic fish could remove larger amounts of microplastic7from deep ocean areas.“The robotic fish can take in different kinds of microplastics and even8itself when it is broken,”the researchers said.“And if a robot fish is accidentally eaten by a real fish,the real fish can9digest(消化)the material.So it does no harm.”Wang said similar robots could be developed to be placed inside human bodies to remove10 materials.And there is still much to be improved for the robots.1．A．strange B．dangerous C．helpful D．helpless2．A．laughed at B．given up C．put off D．set up3．A．cold B．clean C．deep D．hot4．A．controlled B．developed C．recorded D．destroyed5．A．number B．price C．speed D．distance6．A．sell B．collect C．buy D．produce7．A．information B．tool C．waste D．fish8．A．wash B．repair C．enjoy D．relax9．A．safely B．carelessly C．probably D．hardly10．A．good B．important C．normal D．harmful【答案】1-5C D C A C6-10B C B A D【解析】本文介绍了中国科学家研发出能够清除水环境中微塑料颗粒的机器鱼。
选择性必修第四册 Unit 4 Never too old to learn
Ⅰ.认阅读单词1．auditory adj.听的，听觉的2．verbal adj.言语的，文字的；口头的3．Confucius n．孔子4．concrete adj.确实的，具体的；有形的，实在的n．混凝土5．inductive adj.归纳的，归纳法的6．swan n．天鹅7．domain n．领域，范围；领土；域8．vocational adj.职业的，业务知识的9．circuit n．电路，线路；环行；赛车道10．lamp n．灯11．statistic n．统计数字，统计资料12．tablet n．平板电脑；药片13．certificate n．文凭，结业证书；证明，证明书14．breast n．胸部，胸脯15．geometry n．几何(学)；几何形状16．laptop n．笔记本电脑，便携式电脑17．sneeze v i.打喷嚏n．喷嚏，喷嚏声18．drawer n．抽屉19．cafeteria n．自助餐厅，自助食堂20．beard n．胡须，络腮胡子21．intimidating adj.吓人的，令人胆怯的22．carriage n．(火车的)客车厢；(旧时载客的)四轮马车23．kettle n．壶，水壶Ⅱ.记重点单词1．blank adj.空白的n．空白处，空格2．bound adj.一定会，很可能会；有义务(做某事)3．resolve v t.& v i.解决；表决；决心，决定n．决心，坚定的信念4．refresh v t.使变新；使恢复精力；使想起5．objective adj.客观的；客观存在的；宾格的n．目标，目的6．inquire v t.& v i.询问，打听7．register v t.& v i.登记，注册n．语体风格，语域；登记表8．comprehension n．理解力，领悟能力；理解练习9．cease v i.& v t.(使)停止，终止，结束10．self-worth n．自我价值感11．reasoning n．推理，理性的观点，论证12．abstract adj.抽象的，纯理论的v t.把……抽象出，提取13．qualify v t.使合格；使具备资格v i.取得资格(或学历)，合格14．prospect n．成功的机会，前景；可能性15．motor adj.机动车的，汽车的n．发动机，马达16．institution n．机构；风俗习惯，制度17．drill v t.& v i.培训，训练；钻(孔) n．练习，训练；钻，钻头18．competence n．能力，胜任19．random adj.随机的；辨认不出的；不合常理的20．curtain n．幕，帷幕；窗帘；帘，幔；覆盖物21．mature adj.明白事理的，成熟的v i.成熟，长成；有判断力22．circus n．热闹场面；马戏团23．dormitory n．学生宿舍，集体宿舍24．essay n．文章，短文25．paragraph n．段，段落26．draft n．草稿，草案，草图v t.起草，草拟27．polish v t.& v i.修改，润饰；擦光，磨光n．抛光，上光；完美，娴熟，精湛28．bounce v t.(向某人)试探地透露(主意) v i.跳动n．弹跳；活力29．professor n．教授；讲师，教员30．librarian n．图书管理员，图书馆馆长31．forehead n．额，前额Ⅲ.知拓展单词1．composition n．构图；构成，成分；作品；作曲艺术→compose v．构成；使镇静；创作；撰写→composer n．作曲家2．educator n．教育工作者；教育(学)家→educate v t.教育→educated adj.受过教育的；有教养的→education n．教育3．inquire v t.& v i.询问，打听→inquiry n．调查；询问，打听4．comprehension n．理解力，领悟能力；理解练习→comprehend v t.理解，领悟，懂得5．criticize v t.& v i.批评，批判，挑剔，指责；评价→criticism n．批判；指责，评论6．assumption n．假定，假设→assume v．假定，假设，认为7．occupation n．侵占，占领期；使用；工作，职业；消遣→occupy v t.占领；占用(时间、空间等)→occupied adj.使用中；忙于；被占领的8．recreation n．娱乐，消遣→recreational adj.消遣的；娱乐的9．tight ad v.紧紧地，牢固地adj.牢固的；严格的，密集的；亲密的→tighten v．(使)变紧，加强→tightly ad v.紧紧地，牢固地10．reference n．提到；参考；推荐信→refer v．查阅；参考，谈到11．presentation n．幻灯片演示；提交，授予；展示会；演出→present v．颁发，授予；提出，提交；呈现，展现12．extension n．(为非全日制学生开设的)进修部，进修课；扩大，延伸→extend v．扩大，扩展，延伸1．passport n．护照2．patience n．容忍；耐心3．painful adj.疼痛的，痛苦的4．peaceful adj.和平的；安宁的5．performer n．执行者；演奏者6．persuade v t.说服，劝说7．physical adj.身体的；物理的8．plain adj.家常的；普通的9．plastic adj.塑料的10．pleasant adj.令人愉快的，舒适的11．pleasure n．高兴，愉快12．poisonous adj.有毒的Ⅳ.背核心短语1．be bound to一定会，很可能会2．keep pace with sb/sth 与……步调一致，与……并驾齐驱3．subscribe to订阅；定期订购(或订阅等)；同意，赞成4．in a flash转瞬间；立即5．compose oneself使自己镇定下来6．bounce ideas off sb 向某人试探地透露主意7．become aware that意识到，了解到，知道8．be perceived as被视为，被理解为，被认为9．be impressed on/upon sb 给某人留下深刻的印象10．take a deep breath深吸气，深呼吸11．stay up熬夜12．dawn on知晓，明白Ⅴ.悟经典句式1．As I journey through my life，I have become aware that acquiring knowledge is not only a means by which you can better understand the world，but also a way of appreciating how much，as an individual，you do not know.(“介词＋关系代词”引导定语从句)在我的人生征途中，我逐渐意识到获取知识不仅是一种让你更好地了解世界的方式，也是一种让你作为个体认识到你所不知的一种方式。
英语综合教程4参考答案
英语综合教程4参考答案Unit 1: Understanding CulturePart I: Vocabulary and Grammar1. The correct answer is "cultural heritage," which refers to the legacy of physical artifacts and intangible attributes of a group or society that are inherited from past generations, maintained in the present, and bestowed for the benefit of future generations.2. The phrase "cultural diversity" is the right choice here, highlighting the existence of a variety of cultural or ethnic groups within a society.3. "Cultural assimilation" is the term used to describe the process in which a minority group or its members are absorbed into the dominant culture of another group.4. The correct answer is "cultural identity," which is the sense of belonging to a cultural group and sharing its customs, language, and traditions.5. "Cultural relativism" is the concept that a person's beliefs, practices, and customs should be understood based on that person's own culture, rather than be judged against the criteria of another culture.Part II: Reading Comprehension1. True. The passage discusses the importance of understanding cultural differences.2. False. The text emphasizes the need for cultural awareness rather than the elimination of cultural differences.3. True. It is mentioned that cultural understanding can lead to better communication and cooperation.4. False. The passage does not suggest that cultural understanding is only for people from different countries but for everyone.5. True. The text suggests that cultural understanding can help in avoiding misunderstandings and conflicts.Part III: Listening Comprehension1. The speaker talks about the challenges of adapting to a new culture.2. The second speaker discusses the benefits of cultural exchange programs.3. The third speaker shares their experience of learning a new language as part of cultural immersion.4. The fourth speaker mentions the importance of respecting cultural traditions.5. The final speaker highlights the role of technology in facilitating cultural understanding.Unit 2: The Power of LanguagePart I: Vocabulary and Grammar1. "Eloquent" is the correct term to describe someone who speaks or writes in a fluent, expressive, and persuasive manner.2. "Verbal" refers to something expressed in spoken rather than written form.3. "Idiomatic" is the term used to describe language, expressions, or phrases that are peculiar to a language and cannot be understood literally.4. "Paraphrasing" is the act of restating or rewording something, especially to achieve greater clarity or to avoid plagiarism.5. "Syntax" is the arrangement of words and phrases to create well-formed sentences in a language.Part II: Reading Comprehension1. The passage discusses the impact of language on thought and perception.2. True. The text suggests that the structure of a language can influence the way its speakers perceive the world.3. False. The passage does not claim that language is the only factor that shapes thought.4. True. It is mentioned that learning a new language can provide insights into different cultures.5. False. The text does not suggest that all languages are equally expressive or complex.Part III: Listening Comprehension1. The first speaker talks about the importance of effective communication in the workplace.2. The second speaker discusses the role of language in forming personal identity.3. The third speaker shares their experience of learning a new language and the challenges they faced.4. The fourth speaker mentions the influence of media on language use and development.5. The final speaker highlights the power of storytelling asa form of language expression.Unit 3: The Digital AgePart I: Vocabulary and Grammar1. "Innovative" is the correct term to describe somethingthat introduces new methods, ideas, or products.2. "Cyberspace" refers to the virtual environment of computer networks or the internet.3. "Digital divide" is the term used to describe the gap between those who have access to modern information and communication technology and those who lack such access.4. "E-commerce" is the buying and selling of goods or services, conducted over computer networks such as the internet.5. "Artificial intelligence" (AI) is the simulation of human intelligence processes by machines, especially computer systems.Part II: Reading Comprehension1. The passage discusses the impact of digital technology on society.2. True. The text suggests that digital technology has transformed various aspects of life, including communication and commerce.3. False. The passage does not claim that everyone has equal access to digital technology.4. True. It is mentioned that the digital divide can exacerbate social inequalities.5. False. The text does not suggest that digital technology is inherently good or bad, but rather that it has both positive and negative aspects.Part III: Listening Comprehension1. The first speaker talks about the benefits of usingdigital tools in education.2. The second speaker discusses the challenges of maintaining privacy in the digital age.3. The third speaker shares their experience with。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
康橋國際學校自然與生活科技第四冊1-3及3-2節角落學習一、選擇1.（）哪一項為鉀與水反應的反應式？(A)2Na＋2H2O→2NaOH＋H2(B)2H2O2→2H2O＋O2(C)CaO＋H2O→Ca(OH) 2(D)2K＋2H2O→2KOH＋H2。
《答案》D詳解：鉀的元素符號為K，水的化學式為H2O。
兩者在一起反應後會產生H2，另產生鹼性物質KOH。
2.（）有關化學式的寫法，下列何者錯誤？(A)氧化物中的氧寫在右邊(B)(C)正、負原子的價數必須相等(D)有機化合物碳、氫、氧的排列順序中，碳排在最左邊。
《答案》B詳解：(B)金屬化合物中金屬放左邊。
3.（）將下列四種物質配製成相同濃度的水溶液，再用相同的導電裝置測試，則哪一種溶液的導電效果最差？(A)醋酸(B)氫氧化鈉(C)硝酸鉀(D)硫酸。
《答案》A詳解：醋酸為弱電解質，因此其水溶液的導電效果最差。
4.（）下列粒子中，何者不是原子團？(A)OH－(B)NH4＋(C)NO3－(D)H2《答案》D詳解：原子團帶有電荷，因此只有H2O不屬於原子團。
5.（）「電離說」與「原子說」中所提及「原子不可分割」的說法有所矛盾，因此在當時一直存在著一些質疑，直到哪一個事件發生後，才讓當時的人具體了解電離說？(A)同位素的發現(B)電子的發現(C)原子量的訂定(D)莫耳數的提出。
《答案》B詳解：電子的發現，才讓科學家得以完美的解釋「電離說」。
6.（）下列哪一個離子是原子失去兩個電子所形成的？(A)Na＋(B)Br－(C)Mg2＋(D)S2－。
《答案》C詳解：鎂原子失去2個電子，會帶2個正電荷。
7.（）有關化學反應式的敘述，下列何者錯誤？(A)化學反應式表示實際發生的化學反應，不能憑空杜撰(B)用「→」表示化學反應的方向(C)化學反應式即化學式(D)化學反應式中，反應物與生成物的原子數目必須相等。
《答案》C詳解：化學反應式簡稱反應式，用以表示化學反應過程的反應物與生成物的種類、數量關係及反應條件。
8.（）電解質溶解於水中後，下列敘述何者錯誤？(A)負離子和正離子的數目不一定相等(B)(C)溶液可導電(D)通電時，負離子向負極移動。
《答案》D詳解：通電時，負離子向正極移動。
9.（）關於化學反應式的寫法原則，以下何者錯誤？(A)「→」表示反應進行方向(B)以「＋」連接(C)反應式左、右的分子數目相同(D)必須加上係數平衡才算完成。
《答案》C詳解：左、右兩邊的原子數目要相同，分子數目不一定要相同。
10.（）電解質水溶液中，應含有什麼離子？(A)僅有正離子(B)僅有負離子(C)不含有離子(D)正、負離子皆有。
《答案》D詳解：電解質溶於水後，會同時解離出正、負離子。
11.（）下列何圖可以表示某種非電解質溶於水的情形？(A)(B)(C)(D)《答案》B12.（）下列化學式何者正確？(A)硫酸銨：(NH2)2SO4(B)葡萄糖：C12H22O11(C)硝酸鉀：K2NO3(D)碳酸：H2CO3。
《答案》D詳解：(A)硫酸銨：(NH4)2SO4；(B)葡萄糖：C6H12O6；(C)硝酸鉀：KNO3。
13.（）在電解質水溶液中，正離子的總個數與負離子的總個數關係為何？(A)正離子的總個數較多(B)負離子的總個數較多(C)正、負離子的總個數相同(D)不一定，有可能正離子的總個數多，也可能負離子的總個數多。
《答案》D詳解：電解質水溶液呈電中性，故正、負離子總電量相等，但不代表正、負離子的總個數一樣多。
14.（）電解質溶於水後能導電的原因為下列何者？(A)含有可移動的自由電子(B)在水中產生可移動的正、負離子(C)原子本身活動力強(D)分子的移動非常自由。
《答案》B詳解：電解質溶於水後之所以能夠導電，乃是因為其在水中產生可以自由移動的正、負離子所致。
15.（）在一個化學反應中，反應物所含的原子種類與生成物所含原子種類的關係，下列敘述何者正確？(A)反應物較多(B)生成物較多(C)一樣多(D)資料不足，無法比較。
《答案》C詳解：化學反應僅是原子的重新排列組合，因此反應前後的原子數目一樣多。
16.（）一化學反應式：碳酸鈣＋鹽酸→氯化鈣＋水＋二氧化碳，若已知反應物中有鈣原子20個，則完全反應後，生成物中有多少個鈣原子？(A)10個(B)20個(C)30個(D)40個。
《答案》B詳解：化學反應僅是原子的重新排列組合，因此反應前後的原子數目一樣多。
17.（）附圖為稀鹽酸倒入水槽後通電的裝置示意圖，試問下列敘述何者錯誤？(A)燈泡會發亮(B)稀鹽酸藉由(C)溶液中的氫離子游向正極(D)此實驗可證明HCl為電解質。
《答案》C詳解：正離子會游向負極，負離子會游向正極，而氫離子為正離子。
18.（）關於氯原子(Cl)變成氯離子(Cl－)的敘述，下列何者正確？(A)氯原子失去1個質子變成氯離子(B)氯原子失去1個電子變成氯離子(C)氯原子得到1個質子變成氯離子(D)氯原子得到1個電子變成氯離子。
《答案》D詳解：氯離子的核外電子數目總和會比核內質子數目總和多1，因此會帶1個負電。
19.（）若氯化氫(HCl)在水溶液中解離出400個氫離子，則水溶液中應含有多少個氯離子？(A)100(B)200(C)400(D)800。
《答案》C詳解：氫離子帶1個正電荷、氯離子帶1個負電荷，因水溶液呈1電中性，故兩者的個數應相同。
20.（）哪一位科學家曾經提出電解質會在水中解離成離子的「電離說」？(A)湯姆森(B)亞佛加厥(C)道耳頓(D)阿瑞尼斯。
《答案》D詳解：「電離說」乃由阿瑞尼斯所提出。
21.（）在化學反應式aN2＋bH2→cNH3中，a、b、c各為最簡單整數的平衡係數。
請問下列敘述何者正確？(A)a＝3(B)b＝2(C)c＝1(D)a＋b＋c＝6。
《答案》D詳解：1N2＋3H2 2NH3。
22.（）乾粉滅火器是利用高壓氮將乾粉(碳酸氫鈉)噴向火源，以受熱分解出的二氧化碳滅火，其反應式為xNaHCO3→yNa2CO3＋zCO2+wH2O，平衡後下列何者正確？(A)x＝y(B)x＝y＋z(C)x＝y＋z＋w(D)y＝z＋w。
《答案》B23.（）鉀、鈉和水作用之後，除產生氫氣外，還有哪些生成物？(A)氫氧化鈉、氯化鉀(B)氯化鈉、氯化鉀(C)氯化鈉、氫氧化鉀(D)氫氧化鉀、氫氧化鈉。
《答案》D詳解：2K＋2H2O→2KOH＋H2；2Na＋2H2O→2NaOH＋H2。
24.（）有關電解質的敘述，下列何者錯誤？(A)在任何狀態下皆能導電(B)一般而言，酸(C)金屬元素雖然可以導電，但不屬於電解質(D)硫酸為強電解質、醋酸為弱電解質。
《答案》A詳解：溶於水後水溶液可導電者，屬於電解質。
25.（）以下何者是氫氣和氧氣反應產生水的正確反應式？(A)H＋O→HO(B)2H2＋O2→2H2O(C)H2＋O2→H2O2(D)H2＋O→H2O。
《答案》B詳解：氫氣是H2，氧氣是O2，水則為H2O，當反應式平衡時，必須在H2及H2O之前寫上係數2，使得2H2＋O2→2H2O。
26.（）姿瑩以附圖的裝置測試相同濃度的硫酸、醋酸、葡萄糖、酒精水溶液之導電性，請問這些水溶液中，何者可使裝置圖中的燈泡最亮？(A)硫酸(B)醋酸(C)葡萄糖(D)酒精。
《答案》A詳解：硫酸為強電解質。
27.（）鎂和氧加熱生成氧化鎂，鎂消耗15公克，則氧消耗多少公克？(A)10(B)20(C)30(D)40。
《答案》A詳解：反應式為2Mg＋O2→2MgO，反應係數比＝反應之莫耳數比，所以2：1＝15/24：X/32，即X＝10(g)。
28.（）下列何者可代表非電解質溶於水後的示意圖？(A)甲乙丙(B)甲丙(C)甲乙(D)乙。
《答案》D詳解：非電解質溶於水不解離。
29.（）氫氧化鈉(NaOH)在水中解離後，其離子的種類為何？(A)Na＋、H＋、O－(B)NaO－、H＋(C)Na＋、OH－(D)NaH＋、O－。
《答案》C詳解：氫氧化鈉在水中解離後，會產生帶正電的鈉離子與帶負電的氫氧根離子。
30.（）化學式2CO2的意義，下列何者正確？(A)2個C原子與2個O原子，結合成1個分子(B)2個C原子與1個O原子，結合成2個分子(C)2個C原子與4個O原子，結合成1個分子(D)由1個C原子與2個O原子所結合的分子，共2個。
《答案》D31.（）氯化鈉溶於水會生成帶正電的鈉離子及帶負電的氯離子，主要是因為下列何者的移動所致？(A)中子(B)質子(C)電子(D)原子。
《答案》C詳解：當原子失去電子時，會使其形成正離子而帶正電；反之，當原子得到電子時，則會使其形成負離子而帶負電。
32.（）下列化合物的水溶液，何者無法導電？(A)氫氧化鈉，NaOH(B)氫氧化鈣，2(C)酒精，C2H5OH(D)硫酸，H2SO4。
《答案》C33.（）將氯化鈣溶於水中形成水溶液，則下列敘述何者正確？(A)正離子所帶的總電量和負離子所帶的總電量相等(B)鈣離子帶一個正電荷，氯離子帶兩個負電荷(C)溶液通電時，正離子往正極移動，負離子往負極移動(D)整個水溶液是帶負電。
《答案》A詳解：(B)鈣離子帶兩個正電荷，氯離子帶一個負電荷；(C)正離子往負極移動，負離子往正極移動；(D)整個水溶液呈電中性。
34.（）電解質水溶液可以導電，主要是因為電解質在水中會解離出下列哪一種粒子？(A)原子(B)離子(C)中子(D)分子。
《答案》B詳解：電解質會在水中解離出帶電之離子，使水溶液可以導電。
35.（）10個氯化鈣分子在水中完全解離後，下列敘述何者正確？(A)產生10個鈣離子(B)產生10個氯離子(C)鈣離子的總電量＞氯離子的總電量(D)此溶液將帶正電。
《答案》A詳解：1個CaCl2分子解離後，會得到1個鈣離子與2個氯離子，但是正、負離子的總電量相同。
36.（）氨分子是由3個氫分子和1個氮分子所組成，則「氫＋氮→氨」的反應，以下列哪一個圖形來表示較為恰當？(□表示1單位體積的氣體；。
表示氫原子；⊕表示氮原子)(A)(B)(C)(D)《答案》A詳解：氫的分子式為H2、氮的分子式為N2、氨的分子式為NH3。
反應式為3H2＋N2→2NH3。
37.（）硫粉在空氣中燃燒產生二氧化硫，其反應式為：S＋O2→SO2，則有關此燃燒反應的敘述，下列何者錯誤？(A)1公克的硫原子與1公克的二氧化硫(B)1個硫原子與1個氧分子反應，將產生1個二氧化硫分子(C)1莫耳硫原子與1莫耳氧分子反應，將產生1莫耳二氧化硫分子(D)整個反應過程符合質量守恆定律。
《答案》A詳解：「平衡係數比」所代表的意義，為反應過程所需要的物質莫耳數比，所有的係數均為1，代表兩種反應物各1莫耳的情形下，將會產生1莫耳的生成物。
238.（）鈣原子序為20，氯原子序為17，氯化鈣(CaCl2)在水中的解離反應式為CaCl2→Ca2+＋2Cl－，則下列敘述何者錯誤？(A)此水溶液呈電中性(B)Ca2+及Cl－之電子18(C)溶液中Cl－數目為Ca2+的兩倍(D)Ca2+及Cl－之質子數相等。