选修六U2-3教师用
选修六 unit 3 Teaching plan
Teaching planUnit 3 A Healthy LifeReading : Advice from GrandadTeaching AimsKnowledge aims:1. Enable students to know the meaning of these words and phrases in this text, such as cigarette, adolescent, be addicted to, quit, pregnant, abnormal, effect, breathless, decide on, etc.2. Enable students to know the importance of health, the harmful effects of smoking and advice of quitting smoking.Ability aims:3. Enable students’dailed- reading ability to be improved by doing some exercises.Emotional aim：4. Enable students to build up correct attitudes towards smokingTeaching key pointHelp students to know the detailed information of the text by finishing some exercises.Give students some instructions on reading skills.Teaching difficult pointHelp students to build up correct attitudes towards smoking.Teaching procedures:Step1. Lead in.Greet the whole class as usual.Step 2. Pre-readingShow some pictures to let students know smoking does harm to our healthy life.Step3. ReadingTask1. Fast readingMatch the main idea to each paragraph it belongs to.Paragraph 1 a. James’ problem of smoking.Paragraph 2 b.The harmful effects of smoking.Paragraph 3 c.The life the old man is livingParagraph 4 d. Grandad ’s hope and his adviceParagraph 5 e.The three different ways of becoming addicted.Main idea of the text:James’ grandad wrote the ______ to help him _____ _____ smoking.Task2. Careful-readingRead each paragraph carefully and do some exercises.Para 1 It is amazing that James’ _____-year-old grandad can cycle_____ kilometres .Para 2 In what way did the old man try to persuade his grandson to give up smoking?A. Using scientific theoryB. His failure in loveC. His sports activityD. His own experience Para 3 3 Ways to become addictedFirst(ly), you can become ____________Secondly, you can also become ___________Lastly, you can become _______________Para 4 Harmful effects of smokingTo smokers themselves●Do terrible damage to ______ and _________●Be difficult for smoking couples to become ________.●_________ and _______ smell terrible●The ends of fingers ______________●Become _______________●Not enjoy _____________To non-smokers●The babies of smoking couples may have a ________ birth weight or even _________.●The health of non-smokers could be ________Para 5 Some advice (True or false questions.)1.You can choose the day of an exam to quit.2.It is useless to make a list of the benefits of quitting smoking.3.A doctor or chemist can help you.4.You should stop quitting smoking if you fail.5.If you feel nervous, you can go for a cigarette.6.When you want to smoke, you can do something else to make you busy.Step 4. Retelling.James’ grandfather writes him a letter to advise him to quit________. He says his long life must be due to the healthy life. He tells James people can become addicted to cigarettes in ____ ways. He also tells him some harmful______ of smoking In the end, he hopes James can ________ smoking and live a _____ life.Step 5. Group ActivityMake a poster(手抄报) to tell all the school teachers and students the harmful effects of smoking, let them get away from it and lead a healthy life.Step 6. SummaryStep 7. HomeworkSuppose you are James, you have given up smoking and are leading a healthy life now.Write back to your grandfather to tell him your present healthy life at school.Dear Grandad,I’m glad to hear from you. Thanks to your advice in the letter, I have given up smoking successfully and I’m living a healthy life now. Let me tell you somethi ng about my present life at school._________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ ________________________________________________________________________________________ Best wishes for you.Yours faithfully,James。
新人教版选修六Unit 3 全单元教案2
Unit 3 A healthy life Ⅰ. 单元教学目标Ⅱ. 目标语言Ⅲ. 教材分析与教材重组1. 教材分析本单元以A healthy life为话题，通过谈论人们最关心的健康问题，使学生认识到吸烟、喝酒、吸毒、不良饮食等对健康的危害，了解吸烟的危害及怎样戒烟；通过阅读一篇有关艾滋病的宣传文章了解一些艾滋病的常识及如何预防艾滋病；并学会如何就健康问题给别人提供一些建议；功能句式要求学生学会如何表达聚会中的礼仪和禁忌。
通过单元学习，要求学生意识到健康的重要性，养成良好的生活习惯，并学会帮助别人解决一些健康问题。
1.1 Warming Up列举了一些年轻人所关心的健康问题，由此引出单元话题。
要求学生列举出更多类似的健康问题，然后在小组和班级范围内进行比较，说出哪个问题是最重要的，并列举出5个有关这个问题人们应该了解的知识。
1.2 Pre-reading要求学生讨论5个与吸烟有关的问题，为后面的Reading做铺垫。
1.3 Reading是一封爷爷写给James的建议信，信中谈到了吸烟为什么会上瘾、吸烟对健康的危害并附上了一篇如何戒烟的文章来帮助James戒烟。
1.4 Comprehending要求学生讨论几个与Reading内容有关的问题，并根据Reading的内容完成表格。
另外还要求学生用自己的语言简要概述一下advice on how to stop smoking。
1.5 Learning about Language包括两部分：Discovering useful words and expressions 是两个关于Reading中的一些词汇的练习；Discovering useful structures 是关于it structure的用法介绍和练习。
1.6 Using Language是一篇关于HIV / AIDS的宣传材料，介绍了一些有关艾滋病病毒和艾滋病的基本知识以及在生活中如何进行预防。
人教新课标高中英语选修六Unit3GrammarandUsefulStructures教案
Unit3 A healthy lifeGrammar and Useful StructuresTeaching materialNSEFC Book 6 —— Unit 3Teaching aimsEnable the students to master the usage of it.Teaching important & difficult pointsHow to enable the students to know the usage of it.Teaching aidstape recorder, slidesTeaching proceduresStep1 RevisionComplete the passage with the suitable words in their proper forms.1.due to 6. stress2.addicted 7.quit3.alcohol 8.drugs4.manage 9.pregnant5.cigarettes 10. adolescentsSmoking __________, drinking _______ or taking other__________ produce many harmful effects and have no real benefits. So why do ___________do it? Some begin because they believe it makes them look cool. Others think it will help with _______. In their life possibly________ pressure from their parents or teachers.Some just want to see what it is like. What they don’t realize is that they will get into t he habit and __________ become ____________. It will then be difficult to _________ the habit. A few people ________to quit easily but for many it is a very painful process. Of course, the best way to deal with these drugs is not to start in the first place.Keys：cigarettes；alcohol；drugs；adolescents；stress；due to；eventually；addicted ; quit；manageStep2 Lead inSlide showDiscovering “It”1．It rains heavily . 指天气2. It is 20 kilometers from Granddad’s house to James’. 指距离3. It is November 11, 2005. 指日期4. It is 9 o’clock at night. 指时间5. It is bad to smoke. 形式主语6. It is no good smoking. 形式主语7. It is likely that he will succeed. 形式主语Step3 The use of “it”一、“it”作人称代词1. it的最基本用法是作代词，主要指刚提到的事物，以避免重复:Xi’an is a beautiful city, isn’t it?They watched the train until it disappeared in the distance.2. 也可以指动物或婴儿(未知性别的婴儿或孩子):Is this your dog？No, it isn’t.二、it作非人称代词it有时并不指具体的东西，而泛指天气、时间、日期、距离、价值、度量、温度、环境等，称为非人称的it：1.指天气：It is a lovely day, isn’t it?It is a bit windy.2. 指时间:It was nearly midnight when she came back.3. 指环境:It was very quiet in the café.4. 指距离：It is half an hour’s walk to the city centre from my home.5. 指日期：What's the date today? It's May 1, 2007.6. 指季节：It is summer now.7. 指度量：It is about 5 kilograms.8. 指价值：----What's the cost of the T-shirt?----It is 150 Yuan.三、it用作形式主语替代作主语的从句、动词不定式、动名词，而把真正作主语的从句、动词不定式、动名词置于句尾。
江苏省射阳县第二中学高中英语选修六Unit 3 Word Power 教案
●Word PowerStep 1: BrainstormingDo you have any difficulty in remembering English words? What methods do you usually use in learning new words? Now I’ll give you some tips to learn and remember English vocabulary.Remember the spelling of a word by its pronunciation.Remember the spelling of a word by analyzing the formation of the word.Remember the meaning of a word by making a sentence with it.Remember the meaning of a word by studying the origin of the word.English is one of the most widely-spoken languages in the world and it is used as the international working language in many places throughout the world. But where do the English language and all its words come from? Who invented so many new words? Is it possible that English borrowed words from other languages? If so, Can you give some examples?Step 2: Vocabulary learning1. Look at Part A. This is an online article about English words borrowed from other languages. Read the article and analyse how words are borrowed from other languages and used in the English language. Finish the following table.2. Look at Part B. It is a spidergram showing some of the words that have been borrowed from other languages and incorporated into English. Please add more examples if possible.3. Part C serves as a strengthening exercise to check your ability to understand some new words and use them correctly. You should understand the passage and the exact meanings of these words first and then fill in the blanks correctly.4. In this passage (Part C), which words are borrowed from Italian? What was Italy famous for in the 18th century? What does the writer think of the Germans? Which words are borrowed from German? What were the Arabs great for?Step 3: Vocabulary extensionLook at Part D. The idioms connect a characteristic with an animal or a thing. Read the idioms and guess the meaning of each of them.Step 4: Homework1. Finish the two exercises on page 122 in Workbook.2. Complete the e-mail in Part C.。
高中英语人教版选修六教案Unit 3单元教案(word版)
Unit 3 AhealthylifeWarmingUp,Pre-reading andReadingContentanalyze:本单元以健康话题为主题，听说读写等活动主要围绕如何健身，怎样成为健康人展开，其中涉及许多社会热点问题，如抽烟，吸毒，艾滋病，学习与工作压力等影响健康的棘手问题。
本单元引导学生讨论这些问题，目的在于让他们远离有损健康的活动，并养成良好的习惯。
课型设计与课时分配1st period 2nd period 3rd period 4th period 5th period 6th period 7th Reading Language Extensive word Grammar Speaking&writing listening study reading IntegratingskillsThe 1st periodTeachingAims:EnabletheSstolearnhowtogiveadviceonstoppingsmoking.DifficultyandimportanceLearnthebadeffectsof smoking andhowtobive adviceonstoppingsmoking.Learninwhatwayspeoplegetaddictedtocigarettes.Teachingmethods:Discussion,cooperativelearningandoralpractice.Teaching aidsAcomputerandaprojectorTeachingProcedures&waysStepⅠWarmingAhealthylifeAreport----HealthChina,2005,whichisabouttenissuesconcerningChinesepeoplethemostintheyear2005.Accordin gtoyourunderstanding,whatahealthylifeislike?Canyouguesswhatthetenissuesare? AhealthlifeshouldincludetwoaspectsAsamplelist:healthissuesAIDSandinfections,parenting,relationships,foodandnutrition,familyissues,environmentalhealth,dom esticviolence(家庭暴力),airpollution,cancer,anxiety,birthcontrol,dentalhealth,divorce,medicalemergencytreatment。
高中英语选修六复习教案
高中英语选修六复习教案教案标题：高中英语选修六复习教案教案目标：1. 复习选修六教材中的重点知识点和难点。
2. 提高学生的听、说、读、写、译等综合语言能力。
3. 培养学生的学习策略和解决问题的能力。
教学内容：1. Unit 1 Great Scientists- 课文主题：科学家爱因斯坦与杭特的故事- 听力理解：听取科学家的讲述并回答问题- 阅读理解：阅读科学家的传记并回答问题- 语言点：从历史的角度讨论科学发展的重要性2. Unit 2 Robots- 课文主题：机器人的发展和应用- 听力理解：听取一位科学家的演讲并回答问题- 阅读理解：阅读一篇关于机器人的文章并回答问题- 语言点：掌握关于机器人的相关词汇和表达方式3. Unit 3 Life in the Future- 课文主题：未来人类生活的预测和展望- 听力理解：听取人们对未来生活的各种想象和预测并回答问题- 阅读理解：阅读一篇关于未来的文章并回答问题- 语言点：学习表达未来的时间和方式的词汇和句型4. Unit 4 The World of Work- 课文主题：工作的意义和选择- 听力理解：听取人们对不同工作的看法并回答问题- 阅读理解：阅读关于工作的不同观点的文章并回答问题- 语言点：学习用英语表达自己的职业规划和选择教学方法：1. 合作学习：学生分小组讨论和解决问题，激发学生的思维和创造力。
2. 任务型教学：通过任务的设置，让学生主动参与，提高学习效果。
3. 影视资料引入：使用一些有趣的影视资料引入新课，激发学生的学习兴趣。
教学准备：1. 选修六教材及相关复习资料2. 多媒体设备和影视资料3. 黑板、白板或PPT等教学工具教学过程：1. 情境导入：通过展示一些科学家和机器人的照片或视频，激发学生学习的兴趣，引入新课的话题。
2. 预习复习：让学生先预习复习Unit 1-4的相关内容，可以分组讨论和回答问题来检查学生的学习情况。
3. 教学主体：根据课文和相关练习，进行听说读写的训练，引导学生掌握新课的重点和难点。
新人教版选修六unit3全单元教案1
Unit 3 A Healthy Life教材分析I．教学内容分析：本单元的中心话题为“健康生活”。
听说读写等各活动主要围绕如何健身、怎样成为健康的人展开，其中涉及许多社会热点问题，如抽烟，吸毒，艾滋病学习与工作压力等影响健康的棘手问题。
本单元引导学生讨论这些问题，目的在于让他们远离有损身体健康的活动，并养成良好的生活习惯。
Warming up部分主要围绕健康问题和真正健康的人展开讨论。
并提供了以下有关健康的话题：抽烟、喝酒、吸毒、饮食、健美、性健康、压力。
同时，为了启发学生联想现实中的健康话题，附了六幅图片，供学生讨论、思考。
Pre-reading 部分提供了四个讨论题，主要让学生明白“抽烟有害于健康”这一道理。
在我们周围有许多人抽烟，学生经常会听到抽烟的人谈论抽烟。
故此，联系实际，让学生讨论：为什么有些人要抽烟？抽烟有哪些危害？等等问题，并让学生讨论身边的人和事。
虽然学生没有抽烟的切身体会，但其周围不乏许多戒烟成功的例子，让学生体会交流一下，会有现实的作用，即学生或许会说服家人或亲戚把烟戒掉。
教师还可以向学生介绍一些提供戒烟帮助的组织等方面的信息。
Reading 部分是爷爷写给孙子的一封信，共分两部分，第一部分主要是爷爷向孙子介绍他能长寿和充满活力的主要原因在于他健康的生活方式。
而且还以亲身体会向孙子介绍了他年轻时吸烟上瘾的原因、抽烟的危害和戒烟的方法，依此告诫孙子把烟戒掉。
并说明吸烟上瘾的三个原因：1. 尼古丁的药物作用；2. 习惯的驱动力量；3. 精神上的依赖性. 还有吸烟的危害：1. 伤害心脏和肺；2. 不孕；3. 影响身边不吸烟的人的健康；4. 味道难闻；5. 手指发黄；6.跑步速度慢；7. 不喜欢运动。
第二部分提供了六种戒烟的方法：1. 制定计划；2. 下定决心；3. 破除旧习；4. 学习自我放松；5. 必要时请求帮助；6. 坚持不懈。
Comprehending部分帮助学生对课文细节的进一步理解。
选修六unit3教案
选修六unit3教案【篇一：选修六unit 3全单元教案】teaching planteaching content: a healthy life ( period 2 reading)teaching aims:1. improve the students’ reading ability.2. get the students to understand the text fully.3. to talk about the importance of health and the harmful effects of smoking. teaching important and difficult points:how to help the students understand the text fully.teaching aids: a computer , a microphone and a tapeteaching time: 45 minsteaching procedures:step 1greetings. ( slide 1)greet the ss as usual.step 2 pre-reading1. show some pictures on the screen and get the students to answer the following questions: (slide 2---slide 9)1) what are they doing?2) which are healthy activities while which are unhealthy activities?2. get the students to answer the following questions in class. ( slide 10 )1). have you ever smoked? if you have, have you ever tried to stop?2). why do you think some adolescents start smoking?step 3skimming (slide 11 )read and find out the main idea of each paragraph.a. the writer leads to the topic of the letter by talking about james’ problem ofsmoking.b. introducing some different ways of becoming addicted.c. telling the writer’s hope for his grandson and advice on stopping smoking.d. telling the harmful effects of smoking.e. from the life the writer is leading now, we can know the importance ofhealthy life.keys: 2—a3----b 5-----c 4-----d 1-----estep 4 detail reading (slide 12--13)read the letter carefully, and try to finish the following chart. pregnant , run fast, dislike the smell ,other people near the smoker ,enjoy sportstep 5 reading, listening and summary1. read the article and fin d out the suggestions james’ grandfather found on the internet. (slide 14)suggested answers:1) prepare yourself.2) be determined.3) break the habit.4) relax.5) get help if you need it.6) keep trying.2. listen to the passage and fill in the blanks in the following summary. (slide 15) choose a day that is not __________ to quit smoking. make a list of all the __________ you will get from stopping smoking. ___________ all your cigarettes at the end of the day before you plan to quit. ________ the list of benefits you wrote when you feel like smoking. develop some other habits like walking, drinking some water, cleaning the house and so on to keep yourself busy. if you feel nervous or stressed, try to do some __________ exercises like deep breathing. you can stop smoking with a friend or join a group. if you feel really bad, ask a doctor or _________ for help. the most important thing is to keep trying. dont feel ________ if you _________ because some people have to try many times before they finally quit smoking. never give up and you willsucceed.3. check the students’ answers.suggested answers:stressful, benefits, throw away , reread ,relaxation,chemist ,ashamed , weaken4. get the students to read the passage together.step 6 discussion ( slide 16)1. what kind of person do you think james’ grandfather is?2. suppose your father is a smoker, how will you persuade him to quit smoking? make a short dialogue in pairs.step 7 homework ( slide 17 )1. discuss the questions after class.2. find out the key points of the text.3. search some more information about the harmful effects of smoking andadvice on stopping smoking.step 8 ending ( slide 18)module 6 unit 3 a healthy lifeusing languagehiv/aids: are you at risk?teaching aims:by the end of this lesson, students will be able to:＊get to know more about hiv/aids＊know how to protect themselves from aids＊talk about aids and aids awarenessteaching important and difficult point:to show the students an appropriate attitude towards aids patientsteaching procedures:the lesson with begin with the song ―live for love united‖ sung by famous football players. step one: warming upthe students are asked to watch a video clip and discuss what it is about.(the video clip is about the change of an aids infected woman in 90 days.)step two: pre-readingbackground learning: some information about aids.＊red ribbon is an international symbol of aids awareness＊it is worn by people around the world aids day＊it calls for care and concern on aids＊the world aids day: december 1ststep three: while-readingtask 1: skimming choose a main idea for each section＊ section 1 background information about what hiv / aids.＊ section 2 ways to protect yourself.＊ section 3 some wrong statements about aidstask 2 careful readingpart one: 1. what is hiv?hiv is a virus, a very small living thing that causes disease. 2. how does hiv harm people’s health?hiv virus weakens a person’s immune system and eventually it damages theimmune system somuch that the body can no longer fight against disease.3. is there a cure for aids and hiv at the moment?no, it is incurable.part two: in order to stay safe, you _________.a. should not share needles with someone else.b. have to avoid using anything else that the person has used while injectingdrugs.c. should use a condom if you have sex with another one.d. all of the above.part three: how much have you learnt about aids?＊you can catch aids after drinking from the glass used by an hiv-infected person.＊i can become infected with hiv by swimming in a pool, holding hands orkissing someone with hiv.＊people who have not injected drugs do not need to get tested for hiv.＊if i had hiv, i would know because i would feel sick.＊kids can get aids by being bitten by mosquitoes or other insects.＊sharing food with someone infected with hiv will give you hiv, too.＊it is very likely that you will die if you become infected with hiv.＊if you have hiv, you will always get aids eventually.comprehending:1. what do the “it” stand for? hiv or aids? some two million people died of it each year2. this passage is _____.a. an advertisementb. a posterc. a magazine coverd. a criticismstep four: post-reading let’s say something about aids.1. word bank: the new words we have learned.do damage/harm to 损害infect (v.感染) – infected (adj.被感染的) – infectious (adj.有传染性的)be infected with 被…感染stage (v.阶段) drug (n.毒品)inject (v.注射) injection (n.注射)red ribbon 红丝带prejudice (n. 偏见)awareness (n.意识，觉悟) be aware of 意识到virus (n.病毒)immune system 免疫系统cure (v.治愈) – curable (adj.可治愈的) – incurable (adj.不可治愈的)2.exercise 1: fill in the blanks with proper words.①艾滋病是一种可传染的无法医治的疾病。
新人教版选修六Unit2 Period3教案
Unit 2 PoemsPeriod 3——Reading (Language points)Teacher: Huang LikuiTeaching material: NSEFC Book 6 —— Unit 2Lesson type: readingTeaching aids:1. a tape recorder2. a projector3.slidesTeaching Objectives:1.To learn some new words and phrases.2.To master the main idea of each paragraph.3.To learn some complicated sentence patterns.Teaching Important Point:The usage of some useful words and expressions.Teaching Difficult Point:How to grasp and remember the detailed information of the reading material. Teaching Methods:1.Explanations of words and phrases to get the students know their meanings.2.More examples to get the students know the usage.3.Pair work or group work to get every student to join in the class activities andlearn self-study.Teaching Procedure:Step 1: greeting and revision (2 minutes)T: Good morning, girls!Ss: Good morning, Huang!T: Yesterday we talked about English poetry, especially some famous English poets, right?Ss: YesT: I think you must have got a first impression of English poet ry. This class let’s study the passage in details. In my opinion, this passage is not easy. So some language points may help you to understand it better.Step 2: Language points (32 minutes)T: OK, now would you please open your textbook and turn to page 18——English poetry. Have you noticed that in slime paragraphs, there are some words in bold? Please pay attention to these words and make clear “what do the words in bold refer to?”. Ok, let’s read the first paragraph together. Reading poetry, one two sta rt. Ss: (reading)T: Thanks for your sweet voice. Who’d like to translate the second sentence into Chinese? Xxx, would you please?S1: ……Step 3: Homework (3 minutes)T: I believe you must have something in your mind. Here comes your homework.1.Review the language points we have discussed this class and try to retell thewhole passage.2.Finish exercise 2 in word study.Are you clear?Ss: YesT: So much for today. See you tomorrow!Ss: See you!Blackboard Design:Language points1.There are various reasons why people write poetry.a poemvarious: different, its root is varypoetry is a collective noun, used as an uncountable noun.2. Some poems tell a story or…Others try to convey certain emotionSome …others… ／One… the other(s) …常常以固定的搭配形式出现Convey : communicate ideas, feelings to sbColors like red convey a sense of energy and strength.Body language conveys much more information than language spoken.3. emotion 情绪emotional 易动感情的4. learn about sth.learn sth5. I saw a person twelve-feet high.It is appropriate to “tall” here6. We would have won if Jack had scored that goal.。
1516学年人教版高中物理选修32 第六章 传感器 教师用书 教师用书+课件+检测(8份)(4份打包
一、单项选择题(本大题共6小题，每小题6分，共36分。
在四个选项中，只有一个选项符合题目要求)1．当前传感器被广泛应用于各种电器、电子产品之中，下述关于常用的几种家用电子器件所采用传感器的说法中，不正确的是()A．电视机对无线遥控信号的接收主要是采用了光电传感器B．电子体温计中主要是采用了温度传感器C．电脑所用的光电鼠标主要是采用了声波传感器D．电子秤中主要是采用了力电传感器2．在下列有关一些电阻应用的说法中，错误的是()A．热敏电阻可应用于温度测控装置中B．光敏电阻是一种光电传感器C．电阻丝可应用于电热设备中D．电阻在电路中主要起通过直流、阻碍交流的作用3．电子打火机的点火原理是压电效应，压电片在受压时会在两侧形成电压且电压大小与压力近似成正比，现有一利用压电效应制造的电梯加速度传感器，如图所示。
压电片安装在电梯地板下，电压表与压电片构成闭合回路用来测量压电片两侧形成的电压，若发现电压表示数增大，下列说法正确的是()A．电梯一定加速上升B．电梯一定减速下降C．电梯加速度一定向上D．电梯加速度一定向下4．如图所示是电容式话筒的示意图，它是利用电容制作的传感器。
话筒的振动膜前面镀有薄薄的金属层，膜后距膜几十微米处有一金属板，振动膜上的金属层和这个金属板构成电容器的两极。
在两极间加一电压U，人对着话筒说话时，振动膜前后振动，使电容发生变化，导致话筒所在电路中的其他量发生变化，使声音信号被话筒转化为电信号。
其中导致电容变化的原因可能是电容器两板间的()A．距离变化B．正对面积变化C．介质变化D．电压变化5．如图所示是会议室和宾馆房间的天花板上装有的火灾报警器的结构原理图：罩内装有发光二极管LED、光电三极管和不透明的挡板。
平时光电三极管接收不到LED 发出的光，呈现高电阻状态，发生火灾时，下列说法正确的是()A．进入罩内的烟雾遮挡了光线,使光电三极管电阻更大，检测电路检测出变化发出警报B．发生火灾时，光电三极管温度升高，电阻变小，检测电路检测出变化发出警报C．发生火灾时，进入罩内的烟雾对光有散射作用，部分光线照到光电三极管上，电阻变小，发出警报D．以上说法均不正确6．酒精测试仪用于对机动车驾驶人员是否酒后驾车及其他严禁酒后作业人员的现场检测，它利用的是一种二氧化锡半导体型酒精气体传感器。
1516学年人教版高中物理选修32 第六章 传感器 教师用书 教师用书+课件+检测(8份)(4份打包
一、单项选择题1．关于传感器的作用，下列说法正确的是()A．通常的传感器可以直接用来进行自动控制B．传感器可以将感受到的一些信息转换为电学量C．传感器可以将所有感受到的信息都转换为电学量D．以上说法均不正确2．下列说法不正确的是()A．传感器担负着信息采集的任务B．干簧管是一种磁传感器C．传感器不是电视遥控接收器的主要元件D．传感器是将力、温度、光、声、化学成分等转换为电信号的主要工具3．关于光敏电阻和热敏电阻，下列说法中正确的是()A．光敏电阻是用半导体材料制成的，其阻值随光照增强而减小，随光照的减弱而增大B．光敏电阻是能把光照强度这个光学量转换为电流这个电学量的传感器C．热敏电阻是用金属铂制成的，它对温度感知很灵敏D．热敏电阻是把热量这个热学量转换为电阻这个电学量的传感器4．在如图所示的电路中，电源两端的电压恒定，L为小灯泡，R为光敏电阻，LED 为发光二极管(电流越大，发出的光越强)，且R与LED相距不变，下列说法正确的是()A．当滑动触头P向左移动时，L消耗的功率增大B．当滑动触头P向左移动时，L消耗的功率减小C．当S断开时，L消耗功率变大D．无论怎样移动触头，P、L消耗的功率都不变5．如图所示是观察电阻值随温度变化情况示意图。
现在把杯中的水由冷水变为热水，关于欧姆表的读数变化情况正确的是()A．如果R为金属热电阻，读数变大，且变化非常明显B．如果R为金属热电阻，读数变小，且变化不明显C．如果R为NTC热敏电阻(用半导体材料制作)，读数变小，读数变化非常明显D．如果R为NTC热敏电阻(用半导体材料制作)，读数变小，读数变化不明显二、多项选择题6．如图所示，用光敏电阻LDR和灯泡制成的一种简易水污染指示器，下列说法中正确的是()A．严重污染时，LDR是高电阻B．轻度污染时，LDR是高电阻C．无论污染程度如何，LDR的电阻不变，阻值大小由材料本身因素决定D．该仪器的使用会因为白天和晚上受到影响7．传感器是一种采集信息的重要器件，如图所示为测定压力的电容式传感器，将电容器、灵敏电流计(零刻度在中间)和电源串联成闭合回路。
1516学年人教版高中物理选修32 第六章 传感器 教师用书 教师用书+课件+检测(8份)(4份打包
1．传感器(1)定义：能够感受诸如力、温度、光、声、化学成分等物理量，并能把它们按照一定的规律转换为便于传送和处理的另一个物理量(通常是电压、电流等电学量)，或转换为电路的通断的元件。
(2)非电学量转换为电学量的意义：把非电学量转换为电学量，可以方便地进行测量、传输、处理和控制。
有一种电水壶为了防止烧干后引起事故，在水壶上安装了传感器，当壶中的水减少到一定程度时，就会自动断电，这种水壶上安装了什么样的传感器？解析：这种水壶上安装了压力传感器。
当水壶中的水减少到一定程度时，压力减小，压力传感器使电路断开，起保护作用。
2．光敏电阻(1)特点：在被光照时电阻发生变化。
(2)原因：无光照时，载流子少，导电性能不好；随着光照的增强，载流子增多，导电性变好。
(3)作用：把光照强弱这个光学量转换为电阻这个电学量。
传感器是将非电学量转换为电学量的装置，请列举日常生活中见到的传感器。
解析：马路两旁的自动控制路灯开关的装置，楼道内的声控灯装置，有些汽车、电动车上安装的自动报警装置等。
4．霍尔元件(1)构造：如图所示，在一个很小的矩形半导体(例如砷化铟)薄片上，制作四个电极E 、F 、M 、N ，就成为一个霍尔元件。
(2)工作原理：在E 、F 间通入恒定的电流I, 同时外加与薄片垂直的磁场B ，则薄片中的载流子就在洛伦兹力的作用下，向着与电流和磁场都垂直的方向漂移，使M 、N 间出现了电压，称为霍尔电压U H 。
(3)霍尔电压：U H ＝k IB d。
①其中d 为薄片的厚度，k 为霍尔系数，其大小与薄片的材料有关；②一个霍尔元件的d 、k 为定值，再保持I 恒定，则U H 的变化就与B 成正比。
(4)作用：把磁感应强度这个磁学量转换为电压这个电学量。
1．核心元件(1)敏感元件是利用材料的某种敏感效应(如热敏、光敏、压敏、力敏、湿敏)制成的。
(2)转换元件是传感器中能将敏感元件输出的、与被测物理量成一定关系的非电信号转换成电信号的电子元件。
2020-2021学年高二英语人教版选修6教师用书：Unit 3 Section Ⅳ Using
姓名，年级：时间：（教师用书独具)HIV/AIDS：ARE YOU AT RISK?HIV is a virus．A virus is a very small living thing that causes disease．There are many different viruses，for example，the flu virus or the SARS virus．HIV weakens a person's immune system；that is，① the part of the body that fights disease．You can have HIV in your blood for a long time，but eventually HIV will damage your immune system so much that your body can no longer fight disease．This stage of the illness is called AIDS．If you develop AIDS，your chances② of survival are very small．人体免疫缺损病毒/艾滋病：你是否面临危险？HIV(人体免疫缺损病毒)是一种病毒。
病毒是一种可以引发疾病的微生物。
它有许多种类，如流感病毒和SARS病毒.HIV病毒损害人体的免疫系统,也就是说使人体抗衡疾病的免疫功能减弱.在你的血液中，HIV病毒可以长期存在,但是它最终会使你的免疫系统严重受损,以至于你的身体再不能抗衡疾病。
这种疾病到了这个阶段就叫艾滋病。
如果你发展成了艾滋病，生存的几率很小。
[助读讲解] ①that is 也就是（说)。
②chance 此处指“某事发生的可能性”.during sex．For a person to become infected③， blood or sexualfluid that carries the virus，has to get inside the body through broken skin or by injection．One day scientists will find a cure for HIV/AIDS．Until that happens，you need to protect yourself．Here are some things you can do to make sure you stay safe④．HIV是通过血液或性交时产生的体液传播的.携带病毒的血液或体液必须通过皮肤上的创口或通过注射才能进入人体，使人受感染。
2020-2021学年高二英语人教版选修6教师用书：Unit 3 Section Ⅲ Gramma
姓名，年级：时间：it的用法(Ⅰ）语境自主领悟先观察原句后自主感悟1．It is a beautiful day here andI am sitting under the big treeat the end of the garden．2．Your mother tells me that youstarted smoking some time agoand now you are finding itdifficult to give it up．3．Believe me，I know how easyit is to begin smoking and howtough it is to stop．1．例句1中的it作非人称代词，此处指代时间。
2．例句2中的第一个it作形式宾语，真正的宾语为后面的不定式短语to give it up；第二个it作人称代词,代替前文提到的名词smoking。
3．例句3中的第一个it作形式主语，真正的主语为后面的不定式短语to begin smoking；第二个it也作形式主语，真正的主语为后面的不定式短语to stop。
一、用作代词1．it作非人称代词常用于指代时间、距离、自然现象、量度、价值等.It is time to get up．（指时间)到起床的时间了。
It is going to snow．(指天气）(天)要下雪了。
It is a long way from my school to the hospital．（指距离)从我的学校到医院(距离)很远.2．it用作人称代词代替前文提到的事物或动物、指婴儿（尤指性别不明者),未指明但谈话双方都明白的事情或情况。
Her baby’s due next month．She hopes it will be a boy．（代替前文提到的Her baby）她的孩子该下个月出生.她希望会是个男孩。
[即时演练1]用适当的代词填空①The Parkers bought a new apartment but it will need a lot of work before they can move in．②It was nearly midnight when she came back．二、用作形式主语it充当形式主语，本身无意义，其真正的主语通常是不定式、动名词或主语从句。
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知识梳理1.bare adj.& v.(1) adj.裸露的；缺少遮盖的，没有保护的；光秃秃的(2) adj.空的，几乎空了的[搭配] be bare of sth．bare of sth.(3)adj．仅够的，基本的The bare necessities of life维持生活的基本必需品[注意]作此意讲时，bare只能作定语。
(4) v. 揭开；(使)某物裸露出来[拓展]the bare bones (of sth．)梗概，概要lay sth．bare揭露，揭发bare its teeth龇牙咧嘴：bare one's heart／soul (to sb．)诉说衷肠2.appropriate(1) adj. 正确的；合适的(2) v. 拨出；拨给(3) v.侵吞；盗用；挪用[提示]在It is appropriate that．．．结构中用虚拟语气。
[辨析]appropriate，fit，suitable与properappropriate指适合于特殊的人及场合、地位等，强调自然具备适宜的性质；fit指某人或某物在目的上、用途上适合；suitable指适合某种情况；proper有本来就具备适宜的性质的含义，还表示某物具有它应当具备的性质。
3.exchange v.& n．(1) v.交换，互换，调换[搭配] exchange……for……以……换取……exchange……with (sb.) 和(某人)换……(2) n.交换，互换，交流，交易(3) n.[U]兑换；兑换率[拓展] in exchange for交换，调换exchange rate汇率exchange students(两国)交换的留学生exchange (angry) words争吵，争论[辨析]change与exchange①Let'sc hange／exchange our seats!我们换换座位吧!②I changed my seat．我换了个座位。
[注意]在①句中seat必须用复数形式。
sponsor n.& v.(1)n.[C]赞助公司；广告客户；发起者；倡议者；保证人(2) vt. 担保或赞助(某人／某事物)；倡议(某事)；发起，主办4.虚拟语气(2)(Subjunctive Mood 2)(1)与过去事实相反的虚拟条件句在该类条件句中，条件从句中的谓语部分为"had+过去分词”，主句中的谓语部分为"would／should／might ／could十have十过去分词”。
(2)有关虚拟条件句的几种情况①条件从句中的谓语部分有were，should和had时，if有时可以省略，这时从句要用倒装语序。
[注意] if it weren't for……／if it hadn't been fort．．相当于but for……，意为“多亏了……，要不是……”。
这两个句型倒装时not总是在it之后，即were it not for．．．／had it not been for ……。
②有些条件句中的主句谓语和从句谓语表示的动作在时间上并不一致，这类句子称为错综时间条件句。
③有时虚拟语气的条件是通过词或短语表示出来的。
④有些句子虽不含条件从句，但仍用虚拟语气，这种句子称为含蓄条件句。
(3)虚拟语气在某些从句中的运用①as if／as though引导的状语从句或表语从句，有时用虚拟语气。
从句内容与现在事实相反，谓语部分用动词的过去式，be动词常用were；从句内容与过去事实相反，谓语部分为"had+过去分词”；表示将来的可能性不大，用‘would／might／could+动词原形’但若表示确有某种可能，也可不用虚拟语气。
②在It is (high／about time ……句型中，其后的从句要用虚拟语气。
从句中谓语动词常用过去式，也可用“should+动词原形”，should不能省略.③在It is +形容词/名词+that句型中，that引导的从句的谓语部分有时为“should+动词原形”，should可以省略④在与表示“请求、建议、命令、要求”等意义的词相关的主语从句、表语从句和同位语从句中，谓语部分为“should+动词原形”，should可以省略。
⑤在in case, for fear that, in order that, so that 引导的目的状语从句中，谓语部分一般为“should/could/might+动词原形”，should可以省略。
(4)虚拟语气还可用来表示祝愿、诅咒、禁止等。
God bless you．愿上帝保佑你。
Heaven help us!上天保佑我们!May you have a long and happy life。
祝你快乐长寿。
典题精析(W.XX)1."You can't leave the back part _______, "noted Mr. Johnson.A. looseB. blankC. bareD. incomplete2.We must choose texts( that) are appropriate ______ our teaching.A. toB. forC. ofD.A and B3.Plain, simple clothes are appropriate _____ school wear.A. inB. forC. atD. with4. It is illegal for a public official to ask people for gifts or money ______ favors to them.A. in preference toB. in place ofC. in agreement withD. in exchange for5.Two lawyers have donated$ 50,000 to ______ our school's campaign "Help the Needy" , which wasstarted by our former headmaster three years ago.A. sponsorB. launchC. organizeD. plan6.--The weather has been very hot and dry.--Yes. If it had mined even a drop, things would be much better now! And my vegetables _______.A. wouldn't dieB. didn't dieC. hadn't diedD. wouldn't have died7. We ______ John's name on the race list yesterday but for his recent injury.A. will putB. will have putC. would putD. would have put8.--How I want to have studied harder when I was in school.--If you had, you _____work into late every day nowadays. Anyhow, better late than never.A. don'tB. wouldn'tC. didn'tD. won't9.They _____two free tickets to Canada, otherwise they'd never have been able to afford to go.A. had gotB. gotC. have gotD. get10. I _____ through that bitter period without your generous help.A. couldn't have goneB. didn't goC. wouldn't goD. hadn't gone11.Don't handle the vase as ff it_____ made of steel.A. isB. wereC. has beenD. had been12.It's high time that we students _____ even harder at our lessons as the national entrance examination iscoming nearer.A. workB. will workC. workedD. have to work13.--Don't you think it necessary that he _____ to Miami but to New York?--I agree, but the problem is_____ he has refused to.A. will not be sent; thatB. not be sent; thatC. should not be sent; whatD. should not send ;what14. Jane's pale face suggested that she _____ill, and her parents suggested that she _____ a medicalexamination.A. be; should haveB. was; haveC. should be; hadD. was; has15._____in the regulations that you should not tell other people the password of your e-mail account.A. What is requiredB. What requiresC. It is requiredD. It requires能力提升(W.XX)1. Although they plant trees in this area every year, the tops of some hills are still ______.A. blankB. hollowC. vacantD. bare2. For many patients, institutional care is the most _____ and beneficial form of care.A. persistentB. appropriateC. thoughtfulD. sufficient3. I must go to the library today to ______ these books.A. publishB. alterC. replaceD. exchange4. If you had come half an hour earlier, you _______the writer.A. had metB. would have metC. would meetD. could meet5. It is important that we _____with all that can be united.A. will uniteB. would uniteC. should uniteD. shall unite6. It is time we ______ to the library.A. will goB. wentC. goD. gone7. In case I ______ , I would try again.A. will failB. would failC. should failD. shall fail8. I can't move my legs--it is as if they __ to the floor.A. are stuckB. have been stuckC. were stuckD. had been stuck9. ______ his help, I wouldn't have succeeded.A. If it weren't forB. But forC. Not had it been forD. Had it been not for10. It is necessary that he _____ in time to attend the meeting.A. might comeB. would comeC. cameD. come11. My suggestion is that he _____ there at once.A. goB. goesC. wentD. would go12. He gave the order that we ______ there on time.A. beB. areC. had beenD. will be13. If you ______ that late movie last night, you would not be so sleepy now.A. haven't watchedB. didn't watchC. wouldn't have watchedD. hadn't watched14. It was ordered that no smoking ______ in the library.A. be allowedB. would be allowedC. was allowedD. has been allowed15. The kind-hearted couple treat the orphan as though he _____ their own son.A. has beenB. wereC. had beenD. should be16. The actor ____ the benefit performance to raise money for the Hope Project.A. spoiledB. splashedC. splitD. sponsored17. Without air, there ______no living things.A. will beB. can beC. would beD. shall be18. He _____ busy yesterday, or he _______ you with the housework.A. was; had helpedB. was; would have helpedC. had been; would have helpedD. were; would have helped19. _______yesterday, he would get there by Friday.A. Were he to leaveB. If he has leftC. Is he to leaveD. Had he left随堂小测(SZ.XX)Sept. 10th WednesdayToday is Teacher’s Day. I attended a celebration meeting hold by our school.At the meeting, 25 advanced teachers were praised and those had completed 30years of teaching was given medals. My the first English teacher was one of thosepraised. After the meeting, my classmates and I went to see them. Seeing us, thegrey-haired teacher looked exciting. When we said we all wanted to be teachersand devoted ourselves to education in the future, he nodded with satisfaction.He said in firm voice, “teaching is a noble job. Man would be stupid witheducation.” We all agreed and were greatly encouraged by his words.师生互动分数评语错题归档确认参考答案：典题精析：CDBDA DDBBA CBBC能力提升：DBDBC BCCBD AADAB DCBD随堂小测：Sept. 10th WednesdayToday is Teacher’s Day. I attended a celebration meeting hold by our school.Teachers’heldAt the meeting, 25 advanced teachers were praised and those∧had completed 30whoyears of teaching was given medals. My the first English teacher was one of those were 删去thepraised. After the meeting, my classmates and I went to see them. Seeing us, thehimgrey-haired teacher looked exciting. When we said we all wanted to be teachersexcitedand devoted ourselves to education in the future, he nodded with satisfaction.devoteHe said in ∧firm voice, “teaching is a noble job. Man would be stupid witha without education.” We all agreed and were greatly encouraged by his words.。