必修三练习三

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人教版高中英语必修三习题Unit3Section1巩固

Unit 3Section ⅠⅠ.单词拼写1．Stop talking, Henry! I don't have the patience(耐性) to hear such an empty talk.2．Their ship sank into the bottom of the sea. Fortunately, they were spotted(发现) by a ship and rescued.3．I got caught in the traffic jam, so I missed the first scene(场) of the play.4．The bill would permit(准许) workers 12 weeks of unpaid leave for family emergencies.5．You were at fault(过错). You didn't account for the reason to your teacher in time.6．Tom came to the city in the 1970s to seek(寻求) his fortune.7．The child was last seen wandering(漫游) in the street with a bag on his back.8．The children are listening to his adventure(冒险) stories in Africa with great attention.9．She was staring(盯) at the passers-by without any expression.10．I have read several novels(小说) written by Mark Twain, a famous American author.Ⅱ.选词填空which accounted_for my being late for the meeting.2．—I'm sure you like your new job.—On_the_contrary，it's dull.3．I was disappointed whenever the cook found_fault_with my work.4．The next morning，the boy found_himself carried to an unfamiliar place.5．Though brought_up in a big city，the boy likes being close to nature and animals.6．It is already midnight，but my father is still sitting in the armchair，staring_at the floor silently.7．Greenland was discovered by_accident by a man named Erik in the tenth century.8．I happened to be on_the_spot when the accident happened.9．—Could I use your pen，David?—Go_ahead，I'm not using it.10．It_was the ship that brought Henry to London，where he met two millionaires.Ⅲ.用所给词的适当形式填空1．His experience is adventurous(adventure)and has attracted many people's attention.2．On reaching the station，the passenger found someone in rags wandering(wander)around the station.3．As soon as he finished the letters，he took out the envelopes(envelope)at once.4．The tourist was attracted by the beautiful scenery(scene) of the area and decided to stay there foranother two days.5．I have ever read several novels written by thenovelist.(novel)6．The reason he gave to account (account) for his absence was unreasonable.7．The man has been seeking(seek)for a job ever since he lost his job.8．Without the owner's permission(permit)，you'd better not smoke here.9．The traveler who was missing in the mountain was spotted(spot)by a plane finally.10．He was only staring(stare)at the stranger without any words.Ⅳ.完成句子1．You can't enter the lab without_permission.(permission)没有允许，你不能进入实验室。

(完整版)高中英语必修三Book3-Unit3同步练习及详解

必修三 Unit 3 课后作业Ⅰ.单项填空1．Do you think it is ___ good manners to hear others’conversations in ____ curious manner?A．the；a B．/；/ C．/；a D．the；the2．－Could I ask you a rather personal question?－Sure，________.A.pardon me B．go ahead C．good idea D．forget it3．Jim's father didn't _____ him to join the school football team，which made him angry.A．let B．promise C．permit D．hope4．—I hear Johnson was badly injured in the accident.—________，let’s go and see him.A．If not B．If so C．If necessary D．If possible5．The poor young man is ready to accept ______ help he can get.A．whichever B．however C．whatever D．whenever6．I have no________with people who are always complaining of their misfortunes.A．devotion B．belief C．patience D．balance7．When he looked up, he suddenly found himself ___ by a group of teenagers，_____ looked at him anxiously.A．to be surrounded；which B．surrounded；whoC．be surrounded；who D．having been surrounded；which 8．—Does it rain a lot in this area?—________，it hardly ever rains；the climate is like that of a desert.A．What’s more B．In other words C．On the contrary D．As a result 9．It’s wise of you to _____ your father’s advice when you come to any difficulty.A．ask B．seek C．try D．attempt10．When the man was trying to break into the bank，he was caught by the police________.A．in a spot B．on the spot C．off the spot D．to the spotⅡ.阅读理解AIt was a half hour before midnight on December 24th. I was a ticket counter super v isor(主管) for a major airline and was looking forward to the end of my shift(班)at Stapleton International Airport in Denver. My wife was waiting up for me so we could exchange gifts.A very worried gentleman approached me. He asked how he could get home to Cheyenne, Wyoming. He had just arrived from Philadelphia and missed his connecting flight. I pointed him to the ground transportation area. There he could rent a car. And then I called my wife to let her know I would be home shortly.About fifteen minutes later, the gentleman returned and informed me that all the buses were full and there were no cars available. I told him he had to stay for a night. Hearing that, he burst into tears.He explained that his name was Tom, and his son was seriously ill and was not expected to live another year. He expected that this would likely be the last Christmas with his son.I told Tom to collect his luggage and wait for me. I called my wife Kathy and told her not to wait up for me. I was driving to Cheyenne. We arrived in Cheyenne around 2∶30 A．M..Kathy was waiting up for me when I got home. We traded gifts and then our conversation concerned Tom. For Kathy and me, there was no question that driving Tom to Cheyenne was the only option.A couple of days later, I received a Christmas card with a picture of Tom and his family. In it, Tom thanked me for the special gift he had received that holiday season, but I knew the best gift was mine.【解题导语】“我”帮助一位错过转接飞机的父亲圆了和患重病的儿子一起过圣诞节的愿望，妻子为“我”感到欣慰。

练习题物理必修三

练习题物理必修三练习题物理必修三物理是一门探索自然规律的科学，对于学习物理的学生来说，练习题是非常重要的一部分。

通过解答练习题，不仅可以巩固知识，还可以提高解题能力和思维逻辑能力。

本文将介绍一些物理必修三的练习题，帮助学生更好地掌握物理知识。

第一章：机械运动1. 一个物体以5 m/s的速度匀速运动，经过10秒后速度变为10 m/s，求物体的加速度。

解析：加速度的定义是速度的变化量除以时间，即a=(v-v0)/t。

代入已知数据，可得a=(10-5)/10=0.5 m/s²。

2. 一辆汽车以20 m/s的速度匀速行驶20秒后，司机突然踩下刹车，汽车在5秒内停下来，求汽车的减速度。

解析：减速度的定义是速度的变化量除以时间，即a=(v-v0)/t。

代入已知数据，可得a=(-20)/5=-4 m/s²。

第二章：力学1. 一个质量为2 kg的物体受到一个10 N的力，求物体的加速度。

解析：根据牛顿第二定律，力等于质量乘以加速度，即F=ma。

代入已知数据，可得a=10/2=5 m/s²。

2. 一个物体质量为5 kg，受到一个10 N的水平力和一个5 N的竖直向上的力，求物体的加速度。

解析：根据牛顿第二定律，力等于质量乘以加速度，即F=ma。

水平方向的力为10 N，竖直方向的力为5 N，所以合力为√(10²+5²)=√125 N。

代入已知数据，可得加速度a=√125/5=5 m/s²。

第三章：功、能与机械能守恒1. 一个物体的质量为2 kg，从地面上抛出，初速度为10 m/s，求物体到达最高点时的动能和势能。

解析：到达最高点时，物体的速度为0 m/s，根据动能定理，动能等于质量乘以速度的平方的一半，即Ek=mv²/2。

代入已知数据，可得动能Ek=2*0²/2=0 J。

由于到达最高点时物体的高度最大，所以势能等于质量乘以重力加速度乘以高度，即Ep=mgh。

高中生物必修三练习题

高中生物必修三练习题一、选择题1. 细胞膜的主要功能是：A. 保护细胞B. 控制物质进出C. 催化化学反应D. 储存遗传信息2. 细胞核中储存的是：A. 蛋白质B. 酶C. DNAD. 糖类3. 下列哪个结构不是细胞器？A. 线粒体B. 核糖体C. 内质网D. 细胞壁4. 光合作用的主要场所是：A. 细胞核B. 线粒体C. 叶绿体D. 高尔基体5. 以下哪个过程不涉及DNA复制？A. 细胞分裂B. 基因表达C. 有丝分裂D. 减数分裂6. 基因突变可能导致：A. 遗传病B. 细胞死亡C. 物种灭绝D. 所有选项7. 以下哪个不是细胞周期的阶段？A. G1期B. S期C. G2期D. R期8. 细胞凋亡是一种：A. 细胞自然死亡B. 细胞感染病毒后的死亡C. 细胞因损伤而死亡D. 细胞因缺氧而死亡9. 细胞的全能性是指：A. 细胞具有无限分裂的能力B. 细胞具有分化成任何类型细胞的能力C. 细胞具有自我修复的能力D. 细胞具有自我复制的能力10. 细胞分化的结果是：A. 细胞数量增加B. 形成组织和器官C. 细胞体积增大D. 细胞功能增强二、填空题11. 细胞膜的流动镶嵌模型中，_________分子嵌入在磷脂双层中，起到识别和传递信息的作用。

12. 细胞分裂过程中，_________期是DNA复制的时期。

13. 细胞膜上的_________是细胞间通讯的重要结构。

14. 细胞内负责能量转换的细胞器是_________。

15. 细胞凋亡是由_________控制的程序性细胞死亡过程。

三、简答题16. 简述细胞呼吸的过程及其意义。

17. 描述细胞周期中各个阶段的主要特点。

18. 解释什么是基因表达，以及它在生物体中的作用。

四、论述题19. 论述细胞分化在生物体发育中的重要性，并举例说明。

20. 讨论基因突变对生物进化的影响及其在医学上的应用。

【注：以上题目设计旨在考察学生对高中生物必修三相关知识点的掌握情况，包括细胞结构与功能、细胞分裂与周期、细胞分化与凋亡、遗传与进化等主题。

高中化学(必修三)第三章羧酸羧酸衍生物练习题

高中化学（必修三）第三章羧酸羧酸衍生物练习题（含答案解析）学校:___________姓名：___________班级：___________一、单选题1．下列物质中不属于羧酸类有机物的是（）A ．B ．C ．2CH CH =-COOHD ． 2．油酸的结构简式是（）A ．2CH CHCOOH =B ．1531C H COOH C ．1733C H COOHD ．1735C H COOH3．设A N 为阿伏加德罗常数的值。

捕获2CO 生成甲酸的过程如图所示。

下列说法错误的是（）A ．()25310.1g N C H 中所含的共价键数目为A 2.1NB ．标准状况下，222.4L CO 中所含的质子数目为A 22NC ．1mol 乙基所含的电子总数为A 16ND ．100g46%的甲酸水溶液中所含的氧原子数目为A 5N4．某合成药物路线片段如下，D 为合成该药物的重要中间体，其中Et —表示25C H —，THF 为四氢呋喃，作为反应的溶剂。

下列说法不正确的是（）A．A→B的过程为取代反应，碳酸钠的主要作用是吸收生成的HClNaBH可选择性还原酯基B．由B→C的过程，说明在THF环境中4C．一个D分子中存在两个手性碳原子D．1mol B在NaOH溶液中发生水解，最多消耗4mol NaOH5．A、B、C三种醇同足量的金属钠完全反应，在相同条件下产生相同体积的氢气，消耗这三种醇的物质的量之比为3∶6∶2，则A、B、C三种醇分子里羟基数之比是（）A．3∶2∶1B．2∶6∶2C．3∶1∶2D．2∶1∶36．下列试剂可以鉴别乙醇、乙醛、乙酸、甲酸四种无色溶液的是（）A．银氨溶液B．浓溴水C．FeCl3溶液D．新制的Cu(OH)27．下列反应中有C-H键断裂的是（）A．光照下三氯甲烷与氯气反应B．乙烯与溴的四氯化碳溶液反应C．加热条件下乙醇与溴化氢反应D．乙酸与乙醇反应8．下面为三种简单螺环化合物，相关的说法正确的是( )A．上述化合物m、n分子中所有碳原子均处于同一平面B．化合物m的一氯代物有2种C．化合物n与3-甲基-1-庚烯互为同分异构体D．化合物t的名称为螺[5，4]壬烷9．研究有机物的一般步骤：分离提纯→确定最简式→确定分子式→确定结构式。

政治选择性必修三答案练习册

政治选择性必修三答案练习册【练习一：政治制度的比较分析】1. 简述议会制和总统制两种政治制度的主要特点。

- 议会制：政府由议会多数党或联合政府组成，政府首脑（通常是总理）对议会负责，议会有权通过不信任投票推翻政府。

- 总统制：总统作为国家元首和政府首脑，独立于议会之外，拥有行政权，通常通过直接选举产生。

2. 比较联邦制和单一制在权力分配上的差异。

- 联邦制：权力在中央政府和地方政府之间分配，地方政府拥有一定的自治权。

- 单一制：权力高度集中于中央政府，地方政府的权力较小，通常由中央政府授权。

【练习二：政治参与与民主】1. 阐述公民参与政治的几种主要方式。

- 投票选举：通过选举参与政治决策过程。

- 政治讨论：在公共论坛或媒体上表达政治观点。

- 社会运动：参与或组织社会运动，推动政治变革。

2. 分析民主制度中公民参与的重要性。

- 民主制度依赖于公民的积极参与来确保政府的代表性和问责性。

- 公民参与可以提高政策的透明度和公正性。

【练习三：政治文化与价值观】1. 描述政治文化对政治行为的影响。

- 政治文化包括公民对政治制度、政治行为和政治价值的共享信念和态度，影响他们对政治的参与和对政府的期望。

2. 讨论政治价值观在不同社会中的差异。

- 政治价值观如自由、平等、正义等在不同社会中可能有不同的解释和优先级，影响政治制度的设计和政策的制定。

【练习四：国际政治与全球化】1. 解释全球化对国家政治的影响。

- 全球化增加了国家间的经济、文化和政治联系，对国家政策制定和国内政治产生影响。

2. 讨论国际组织在国际政治中的作用。

- 国际组织如联合国、世界贸易组织等在协调国际关系、解决国际争端和推动全球合作方面发挥重要作用。

【结束语】通过本练习册的学习和练习，我们对政治制度、政治参与、政治文化以及国际政治有了更深入的理解。

希望这些知识能够帮助大家更好地参与政治生活，理解政治现象，并在全球化的背景下思考国家与世界的关系。

人教版必修三第三章测试题(含答案)(K12教育文档)

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11第三章测试题一、选择题（本大题共12小题,每小题3分，共36分.在每小题给出的四个选项中，只有一项是符合题目要求的)1. 从一批产品中取出三件产品，设A ＝“三件产品全不是次品”，B ＝“三件产品全是次品”，C ＝“三件产品不全是次品”，则下列结论不正确．．．的是（）． A. A 与B 互斥且为对立事件B 。

B 与C 互斥且为对立事件C. A 与C 存在有包含关系D. A 与C 不是对立事件2. 抛掷一枚质地均匀的硬币，如果连续抛掷1000次，那么第999次出现正面朝上的概率是（）．A 。

9991 B.10001C 。

1000999 D 。

213。

同时抛掷两枚质地均匀的硬币，则出现两个正面朝上的概率是( ）． A.21 B 。

41 C 。

31D. 814.甲、乙两人随意入住两间空房，则甲乙两人各住一间房的概率是（）． A 。

31B.41 C 。

21D.无法确定25. 口袋内装有一些大小相同的红球、白球和黑球，从中摸出1个球，摸出红球的概率是0.42，摸出白球的概率是0.28，那么摸出黒球的概率是（）． A 。

0.42 B 。

0.28 C 。

0.3 D. 0.76. 已知地铁列车每10 min 一班，在车站停1 min 。

则乘客到达站台立即乘上车的概率是（）．A ．101 B ．91 C ．111 D ．817。

高中政治(人教版)必修三练习：3-7-2弘扬中华民族精神含解析

高中政治（人教版）必修三练习：3-7-2弘扬中华民族精神含解析一、基础巩固知识点一中华民族精神的特点1．在全面建成小康社会的新时期，我们仍然需要弘扬井冈山精神、长征精神、延安精神、西柏坡精神、沂蒙精神，主要是因为( )①民族精神不具有时代性，任何时代都不会过时②中华文化是中华民族精神的精髓③这些精神作为中国共产党人的革命精神，已成为现代中华民族精神的主体④这些精神具有浓厚的民族性、鲜明的时代性和先进性A．①②B．②④C．②③D．③④解析：选D。

①说法错误，民族精神具有鲜明的时代性，随着时代变化而不断丰富发展；②说法错误，中华民族精神是中华民族文化的精髓；③④正确回答了弘扬这些精神的原因，故选D项。

2．从革命战争时期的井冈山精神、长征精神到社会主义建设时期的雷锋精神、抗震救灾精神，这充分展示了中华民族精神的( ) A．薪火相传、越燃越旺B．独树一帜、绵延流长C．薪火相传、一脉相承D．民族特色、永恒不变解析：选A。

此题考查民族精神的特点。

由革命战争时期的民族精神，到建设时期的民族精神，可见民族精神相互延续，不断注入新的时代内涵，故选A。

知识点二弘扬和培育中华民族精神3．当今时代，文化越来越成为民族凝聚力和创造力的重要源泉，越来越成为综合国力竞争的重要因素。

民族精神在增强我国国际竞争力中的作用表现在( )①凝聚和动员民族力量，展示民族形象②有利于搞好经济建设，促进经济发展，增强综合国力③弘扬和培育民族精神是当前国际竞争的实质④民族精神是综合国力的基础，是综合国力最重要的因素A．①②B．③④C．①④D．②③解析：选A。

本题考查民族精神对综合国力的作用。

当前国际竞争的实质是以经济和科技实力为基础的综合国力的较量，故③④说法错误，排除含③或④的选项，A项入选。

4．在实现中华民族伟大复兴过程中，对中小学生弘扬和培育民族精神的作用在于( )①继承和发扬中华民族优良传统②提高中小学生的综合素质③为中华民族的生存和发展强基固本④是我国当前各项工作的中心A．①②④B．①③④C．①②③D．②③④解析：选C。

培根筑基29--课下全面练选择性必修三Unit 3(练习)(人教版新教材)

选择性必修第三册Unit 3Environmental ProtectionⅠ.阅读理解A[2021·西安模拟]Instagram is about to take its biggest step toward removing likes from its platform. After months of testing an option to hide likes in select international markets, Instagram, which is owned by Facebook (FB), has already been testing hiding likes in seven other countries, including Canada, Ireland and Australia. For years, likes have been central to how celebrities, brands, politicians and everyday users experience Instagram and Facebook. It's a way of measuring popularity and success. But in recent months, Instagram has been rethinking how likes contribute to making its platform more toxic. Now it's considering a change.The total number of likes on posts－which appear as hearts on the app－will disappear from Instagram's main feed, profile pages and permalink pages. The owner of the account can still see their own likes, but their followers won't know the count.CNN Business previously spoke with users in countries with the test. The majority felt this move would improve well-being on the app. Instagram is the most detrimental social networking app for young people's mental health, such as negatively impacting body image, according to one study.But other users and psychologists said hiding likes won't fix everything. The test doesn't address some of the key ways that activity on Instagram can impact the well-being of users, including bullying, feeling left out and thinking other people's lives are better than their own.Renee Engeln, a psychology professor at Northwestern University, voiced his opinion that the biggest impact of Instagram is the content and the exposure to this constant stream of perfected images is what seems to hurt psychologically. Plus, users can still see their own likes—and feel badly if their posts don't perform well.1．How do users usually experience Instagram for years?A．By selecting platforms.B．By showing off talents.C．By hiding likes. D．By giving likes.2．What does the underlined word “detrimental” in Paragraph 3 mean?A．Profitable. B．Popular.C．Harmful. D．Positive.3．What can we infer from the passage?A．Instagram has affected youngsters' mental health.B．The account owners won't know the count o-likes.C．Instagram tested hiding likes in seven countries first.D．The majority think Instagram has been a well-being app.4．What could be the best title of the passage?A．Instagram Misuses LikesB．More People Are Against LikesC．Likes Cause Mental ProblemsD．Likes will Be Hidden on InstagramB[2021·德州模拟]China's Mars rover, Tianwen-1, will likely attempt to land at a site in northeastern Mars, according to a new paper published just days ahead of the mission's launch. The paper was written by team members of China's Tianwen-1 Mars mission, which aims to send an orbiter and a rover to the Red Planet.The study reveals new details about Tianwen-1, outlining its intended landing area, science goals and the names of instruments aboard the spacecraft. It also stresses the historic nature of the mission: Not only is Tianwen-1 China's first fully homegrown Mars mission, it's also the first to carry both an orbiter and a rover.Tianwen-1 means “questions to heaven”and was taken from the title of a poem by Qu Yuan (340 —278 BC). The spacecraft will reach Mars in February 2021, at the same time as NASA's Perseverance rover and the United Arab Emirates 5 Hope orbiter launched on Sunday (July 19). However, China's rover will remain attached to the orbiter for two to three months before attempting its landing, according to the paper.The chosen landing area is Utopia Planitia, a huge basin formed by a large impact far back in Mars' history that was also the region where NASA's Viking 2 lander touched down in 1976. China had isolated a part of the vast plain as a landing area, which means there will be more time and atmosphere for the entry spacecraft to slow down and safely land on the surface. The latitude is also suitable for receiving enough sunlight to power the 240 kilograms rover. The relatively smooth surface will also be helpful for roving. The mission also benefits from the engineering heritage of China's Chang'e lunar exploration program, the paper noted.The Tianwen-1 orbiter will operate in a polar orbit in order to map Mars. The rover will also investigate the surface soil characteristics and water-ice distribution with its own Subsurface Exploration Radar. It will also analyze surface material composition and characteristics of the Martian climate and environment on the surface.5．What's the purpose of the passage?A．To lay out key details about Tianwen-1.B．To state how Tianwen-1 was invented.C．To stress the historic meaning of Tianwen-1.D．To analyze characteristics of the Martian climate.6．What is most special about Tianwen-1 according to Para. 2?A．It was named after Qu Y uan, a famous poet in Chinese history.B．It will reach Mars at the same time as NASA's Viking 2.C．It will remain for 2 or 3 months on Mars.D．It will complete orbiting and roving in a Mars mission.7．Why is Utopia Planitia chosen as the landing area of Tianwen-1?A．The rare air there is suitable for the flight of Tianwen.B．The area can protect Tianwen-1 from too much sunlight.C．It has relatively smooth surface, which is helpful for roving.D．There is no spacecraft successfully landing there in history.8．The last Paragraph states mainly ________.A．Tianwen-1's historic contributionsB．Tianwen-1's new radar instrumentsC．Tianwen-1's academic advantagesD．Tianwen-1's scientific goalsⅡ.完形填空[2021·日照模拟]Just a few months earlier, I would never have pictured myself acting in a play in front of two hundred people. If not for my __1__，Mrs. Sather, I might never have found that opportunity.In the first and second grade, I was extremely __2__. It just wasn't in my personality to be very outgoing. I would escape in my writing. Mrs. Sather, always __3__ me to write more. I think she was one of the first people to see my inner __4__.One day, she announced our class was going to __5__ a play, a take-off on The Wizard of Oz. “I need someone to play the lead part of Dorothy.” A few excited hands __6__. Mine, of course, was not one of them.After school, Mrs. Sather said to me, “Dallas, I was __7__ you didn't raise your hand. You're great at memorizing things, and you have such a sweet personality. Perfect for Dorothy! I had you in __8__ for Dorothy while writing the play! If you __9__ don't want to, though, I won't make you. It's your __10__.”I realized it was time to show the world who I really was. I __11__ the role. Fast-forward through five months of __12__，line memorizing, and costume creating, we were ready.At the end of the play, when the audience stood and applauded, I knew they were not just __13__ for my performance that night, but for the __14__ that they knew would come in later years because of my newfound __15__.1．A.partner B．teacherC．parent D．classmate2．A.shy B．weakC．energetic D．ambitious3．A.recommended B．allowedC．encouraged D．accompanied4．A.drawback B．peaceC．character D．strength5．A.perform B．watchC．write D．enjoy6．A.put down B．reached outC．shot up D．drew back7．A.excited B．amusedC．afraid D．surprised8．A.store B．mindC．memory D．comparison9．A.initially B．reallyC．finally D．spiritually10．A.turn B．choiceC．luck D．fault11．A.accepted B．playedC．created D．remembered12．A.practicing B．learningC．observing D．communicating13．A.celebrating B．chattingC．cheering D．congratulating14．A.praises B．effortsC．beliefs D．performances15．A.skill B．confidenceC．interest D．hobbyⅢ.语篇填空[2021·湖北模拟]Having a vegan diet might sound hard. However, in recent years, veganism (纯素食主义) has become one of 1.________ fastest-growing lifestyle trends in the world.According to HuffPost, more than 3 million people in the United States are vegans. In the UK, about 542,000 people 2.________ (choose) veganism over the past decade.What is driving this 3.________ (grow) in veganism? It is because people want to protect the environment. Producing meat and dairy products 4.________ (be) stressful for the environment. According to a study, global meat manufacturing causes about 18 percent of the world's greenhouse gas emissions. This figure is 5.________ (high) than all the world's cars, trains and planes combined. Another reason is 6.________ many of today's young people believe it's wrong to kill animals for food.For many people, veganism 7.________ (simple) means eating no meat, cheese or eggs, but going animal-free also applies to fashion and manufacturing. Every year more than a billion animals are killed 8.________ (make) leather products from their skins. Now, many brands are looking for other materials. The sports brand Puma has made shoes out of pineapple leaves. Tesla is said to be removing animal-based leather 9.________ its seats.So, if you're interested in 10.________ (protect) the environment, you might want to give veganism a try.详解答案选择性必修第三册Unit 3Environmental Protection Ⅰ.阅读理解A【语篇解读】本文是一篇说明文。

新人教版高中英语必修三第三单元专项练习

必修第三册Unit 3一、词性转换1. ________adj.不同的；多种多样的→________ n.差异(性)；不同(点)；多样性2. _________ n. 机会；运气→_________ adj. 幸运的；吉利的→_________ adv. 幸运地；幸亏3. _________ vi.&vt.承认vt.准许进入(或加入)→_________n.允许进入；入场费；承认4.________adj.确实的，肯定的→________ adv.肯定；确实5. _________ n.历史→_________ adj.历史上著名(或重要)的；有史时期的→_________ adj. (有关)历史的6. _________ vi.移入(外国定居)→_________ n.(外来)移民；外侨adj.移民的，移居的→_________ n.移民；移居入境7. _________ vt.选择；挑选；选拔→_________ n.选择，挑选8. _________ adj. 较小的；次要的→_________ n. 少数民族；少数派；少数人9._________ n. 金融；财政→_________ adj. 财政的；财务的；金融的→_________ adv.财政上；金融上10. _________ n. 诗；韵文→_________ n. 诗人→_________ n.诗集；诗歌；诗作→_________ adj.诗的；诗意的11. _________n.毒物；毒药；毒素vt.毒死；毒害→_________ adj.引起中毒的；有毒的；分泌毒素的12. _________ v. 收集；搜集→_________ n.收藏家→_________ n.作品集；收集物；收藏品13. _________n. 百分之…… adj.&adv.每一百中→_________ n.百分率；百分比14. _________vt.&vi.定居；结束(争论)；解决(纠纷)→_________n. 定居；解决→_________ n.移民；殖民者15._________ adj.温和的；和善的；轻微的→_________ adv. 轻微地；温和地16. _________ vt. 建设；修建→_________ n.建筑；建造；建造物；(句子、短语等的)结构二、词块翻译1. 幸运曲奇__________________2. (朝……)前进；(向……)去__________________3. 寻找成功致富之路；闯世界__________________4. 谋生__________________5. 一系列或一连串(事件) __________________6. 除了……外(还)；此外__________________7. 导致；引起__________________8. 仅举几例__________________9. 第一手；亲自__________________三、单句语法填空1. There is a need for greater _________ (diverse) and choice in education.2. _________ (fortunate), everything worked out all right in the end.3. They tried to get into the club but were refused _________ (admit).4. I’m _________ (definite) going to get in touch with these people.5. Most schools would have a good _________ (select) of these books in their libraries.6. We’ll need to do a series of _________ (test) before we do anything else.7. Apart _________ grammar, this article is all right.8. They took effective measures to prevent _________ (poison) gases from escaping.9. The summer house was a simple wooden _________ (construct).10. The library has a _________ (collect) of 80,000 books and 90 kinds of newspapers and magazines.参考答案一、词性转换1.diverse；diversity2. fortune；fortunate；fortunately3.admit；admission4.definite；definitely5. history；historic；historical6.immigrate；immigrant；immigration7.select；selection8.minor；minority9.finance；financial；financially 10.poem；poet；poetry；poetic 11.poison；poisonous 12.collect；collector；collection 13. percent；percentage 14. settle；settlement；settler d；mildly 16.construct；construction二、词块翻译1.fortune cookie2.head to3.seek one’ s fortune4.earn a living5.series of6.apart from(especially aside from)7.bring about8.to name but a few9. (at) first hand三、单句语法填空1.diversity 2.Fortunately 3.admission 4.definitely 5.selection 6.t ests 7.from 8.poisonous 9.construction 10.collection。

高二物理必修三练习题

高二物理必修三练习题高二物理必修三是学习物理的一门基础课程，通过这门课程的学习，我们可以更加深入地了解物理世界的规律和现象。

为了帮助同学们更好地掌握物理知识，我准备了一些练习题，希望能够帮助大家巩固知识，并且提高解题能力。

练习题一：力的作用与力的分解1. 一个质量为2kg的物体，受到一个恒力3N的作用力，求该物体在这个力的作用下，加速度是多少？(10分)2. 若一个物体受到的合力为零，则可以断定该物体一定处于静止状态吗？试举例说明。

(10分)练习题二：牛顿第二定律与质量1. 一个质量为3kg的物体受到一个作用力4N，求该物体的加速度是多少？(10分)2. 在草原上有一块石头，若我们用同样的力推动该石头和推动一个质量较小的小石头，哪个石头的加速度更大？为什么？(10分)练习题三：弹性力与胡克定律1. 当物体受到一个弹簧拉伸力时，弹簧的伸长量与拉力之间的关系是什么？(10分)2. 如果将一个质量为2kg的物体悬挂在弹簧上，发现弹簧伸长了0.5m，求该物体所受的拉力大小。

（弹簧劲度系数为60N/m）(10分)练习题四：力和加速度的关系1. 一个质量为2kg的物体受到一个力，使其产生加速度1m/s²，若该物体的质量增加到4kg，受到相同的力作用时，新的加速度是多少？(10分)2. 如果一个物体的质量不变，它受到的力增加了一倍，那么它的加速度会发生怎样的变化？为什么？(10分)练习题五：作业一1. 如果一个小球从斜面顶端自由落下，不考虑空气阻力，那么这个小球在下滑的过程中会受到哪些力？这些力的方向如何？(10分)2. 在电梯上，当电梯加速向上运动时，一个站在电梯上的人感觉自己的体重增加了，这是为什么？(10分)练习题六：作业二1. 在一个竖直向上的坡道上，有一辆质量为100kg的小汽车，它受到了与坡度无关的摩擦力，摩擦力的大小为300N，小汽车所受的推力是多少才能保持匀速上坡？(10分)2. 在上一题的情况下，如果小汽车所受的推力为700N，小汽车的加速度是多少？(10分)练习题七：弹性力与动能1. 弹射器上的橡皮筋拉紧后发射小球，小球射出的速度是否受到橡皮筋的劲度系数的影响？为什么？(10分)2. 在一个摩擦很小的水平桌面上，有一个质量为0.5kg的物体，当物体从静止开始逐渐向右推动，直到达到2m/s的速度时停止推动，求整个过程中物体所受到的摩擦力的大小。

高中地理必修三练习第三章第一节能源资源的开发以我国山西省为例Word版含答案

第三章区域自然资源综合开发利用第一节能源资源的开发——以我国山西省为例教材第43页活动1．教材的资料从成本和对环境的影响给出了正反两方面的说明。

(1)输出煤会减轻本地环境污染，而造成使用地的环境污染；输出电会增加本地的环境污染，而减轻使用地的环境污染。

每一种方式对生产地和使用地都会产生不同的影响。

(2)从输出成原来看，输电成本低，而输煤成本高。

(3)山西缺水，燃煤发电消耗大量水资源。

输煤好，还是输电好？不是简洁地确定一种而否定另一种，它们是各有利弊的，正由于如此，这两种方式始终并存。

2．资料揭示的内容如下：(1)“西气东输”将使晋煤失去部分市场；(2)“西电东送”将使晋煤在东部的市场份额进一步削减；(3)今后核电和水电的比重将大幅上升，晋煤的比重将减小；(4)山西煤炭的开采因种种缘由不具优势。

以上资料的引申信息：山西煤炭工业将面临市场缩小、其他能源竞争的压力。

假如不重视这个问题，不实行预防措施、准时调整产业结构，山西经济将不行能持续进展。

改革开放以前和改革开放初期，山西省产业结构格外单一。

这种以出售原材料为主的经济结构，首先对运输形成了巨大的压力，更对生态环境造成严峻威逼。

更为严峻的是，假如国内能源市场需求减小，将对山西以煤为主的经济带来格外不利的影响。

为避开这种状况的发生，山西进行了产业结构调整，围绕能源的开发构建了三条产业链，提高了能源的综合利用程度和产品的附加价值。

教材第46页活动1．从煤炭资源隐藏量和品种看，山西省已探明煤炭资源储量为2 700多亿吨，储量丰富，矿种齐全，煤质优良，埋藏浅；内蒙古东部地区煤炭探明储量640多亿吨，占全国煤炭总量的1/10，矿种单一、煤质中等，地质构造简洁，煤层厚、埋藏浅。

从开采条件看，两地都较优越，适宜露天开采和大规模机械化开采。

2．山西地处我国中部，有京包、石太等铁路经过，邻近北京、天津、郑州、洛阳、西安、咸阳等工业中心，与上海、沈阳、武汉等城市相距不远，煤、电输送都较近便。

人教版高中英语必修三unit3综合练习测试卷(含答案)

M3unit3Ⅰ.单词荟萃1．________n．出生地；故乡→________n．出生2．________n．小说；长篇故事→________n．小说家3．___________n．冒险→________ n．冒险家→________ adj.冒险的4．________ n．商人→________n．生意；商业5．________n．耐心→________adj.耐心的→________ adv.耐心地→________n．病人6．________vi.漫游；漫步；漂泊7．________vt. & vi.许可；允许→________ n．允许8．________vi.凝视；盯着看9._______vi.发现；认出→_______(过去式)→_______(过去分词) 10．________vt.寻找；探索→________ (过去式)→________ (过去分词)11．________adj.难以置信的→________vt.可信→________n．信仰→________adj.可信的12．________adj.粗鲁的；无礼的→________n. 粗鲁→________adv.粗鲁地Ⅱ.短语检测1．偶然地；意外地_________________2．衣衫褴褛__________________3．前进；往下说______________ 4．盯着看________________________5．导致；做出解____________ 6．与此相反，正相反_____________________7．冒险____________ 8．至于；关于_________________________9.打赌____________ 10.养育；抚养____________III、完成句子1．事实上，当他进入办公室时是偶然被保安发现的。

2．很多人去大城市追求幸福和成功而我想碰碰运气，在家乡开个公司。

高中英语必修三情态动词B3练习

高中英语必修三情态动词B3练习必修三情态动词训练3.8Unit11.(2011年北京)—I don’t really like James. Why did you invite him?—Don’t worry. He_____come. He said he wasn’t certain what his plans were.A. must notB. need notC. would notD. might not2.(2011福建)—Shall I inform him of the change of the schedule right now? —I am afraid you_______,in case he comes late for the meeting.A．will B．must C．may D．Can3.（2011湖南）-----No one _______ be compared with Yao Ming in playing basketball.-----Oh,you are really his big fan.A. canB. needC. mustD. might4.（2011江西）It ______ be the postman at the door. It’s only six o’clock.A. mustn’tB. can’tC. won’tD. needn’t5.（2011陕西）—Will you read me a story, Mummy? --OK. You ________have one if you goto bed as soon as possible.A. mightB. mustC. couldD. shall6.（2011上海）I ______ worry about my weekend—I always have my plans ready before itcomes.A. can’tB. mustn’tC. daren’tD. needn’t7.（2011辽宁）If you __ go, at least wait until the storm is over.A. canB. mayC. mustD. will8.（2011四川）The police still haven't found the lost child, but they’re doing allthey______ .A. canB. mayC. mustD. should9.（2011浙江）－Ｈow's your new babysitter?－We____ask for a better one ,All our kidslove her so much.A. shouldB. mightC. mustn'tD. couldn't10.（2011重庆）——Why didn’t you come to Simon’s party last night?——I want to, but mymom simply _________ not let me out so late at night.A. couldB. mightC. wouldD. should11.（2010安徽）Jack described his father, who________a brave boy many years ago，as astrong-willed manA. would beB. would have beenC. must beD. must have been12.（2010北京）---Good morning. I've got an appointment with Miss Smith in the PersonnelDepartment.--Ah, good morning. You_____be Mrs. Peters.A. mightB. mustC. wouldD. can13.(2010湖南）You_____ buy a gift, but you can if you want to.A. mustB. mustn'tC. have toD. don't have to14.(2010江苏）—I haven’t got the reference book yet, butI’ll have a test on the subject nextmonth.—Don’t worry. You______ have it by Friday.A. couldB. shallC. mustD. may15.（2010江西）I have told you the truth. ______ I keep repeating it?A MustB CanC MayD Will16.Day and night, the old woman wept over the death of her only son, __ she forgave the driverwho killed him.A. as thoughB. even thoughC. all thoughD. even17.Give me a reason _____ you think that email is a good way for people to communicate.A. whichB. whyC. whenD. where18.______ Hu Jin would not appear that night, Li Fang was _______.A.Found; heart-brokenB. Finding; heart-brokenC. To find; broke heartD. Find; breaking heart19.The day _____ he was looking forward ____ in the end.A.when, to comeB. which, to comeC. which, to cameD. when, to came Unit21．一May I take this book out of the reading room?一No，you _____ ．You read it in here．A．mightn’t B．won’t C．needn’t D．mustn’t2．You ____park here! It’s an emergency exit．A．wouldn’t B．needn’t C．couldn’t D．mustn’t3．You ____buy a gift，but you can if you want to．A．must B．mustn’t C．have to D．don’t have to4．But for their help，we____the program in time．A．can not finish B．will not finishC．had not finished D．could not have finished5. She____have left school，for her bike is still here．A．can’t B．wouldn’t C．shouldn’t D．needn’t6．Thank you for all your hard work last week．I don’t think we ____ it without you．A．can manage B．could have managed C．could manage D．can have managed 7．一I’m sorry I _____ at you the other day．一Forget it．1 was a bit out of control myself．A．shouldn’t shout B．shouldn’t have shoutedC．mustn’t shout D．mustn’t have shouted8．What a pity! Considering his ability and experience，he____better．A．need have done B．must have doneC．can have done D．might have done9．—What sort of house do you want to have? Somethingbig?—Well, it ____be big—that’s not important．A．mustn’t B．needn’t C．can’t D．won’t10．——She looks very happy．She ____have passed the exam．——I guess so．It’s not difficult after all．[2007江苏，22] A．should B．could C．must D．might11. He____have solved all his problems；otherwise，he wouldn’t be so relaxed．A．should B．must C．wouldn’t D．can’t12．There was a lot of fun at last night’s party．You____have come，but why didn’t you? A．must B．might C．need D．should13．Sir，you____be sitting in this waiting—room．It is for women and children only．A．oughtn’t to B．can’t C．won’t D．needn’t14．Oh，I’m not feeling well in the stomach．I____ so much fried chicken just now．A．shouldn’t eat B．mustn’t have eatenC．shouldn’t have eaten D．mustn’t eat15．--T om is never late for work．Why is he absent today?--Something_____to him．A．must happen B．should have happenedC．could have happened D．must have happened16．--I haven’t seen Mr．White for weeks．--What ____to him?A．must have happened B．may have happenedC．can have happened D．may happen17．Being afraid of making mistakes，the little boy______ answer his teacher’s question．A．does dare B．doesn’t dareC．daren’t to D．not dare to18．一Must I bring my lunch here?一No, you ____. We have prepared it．A．shoutdn’t B．don’t have to C．mustn’t D．needn’t to19. Boddy___me your secret，but he meant no harm．A．shouldn’t have told B．should tellC．musm’t have told D．could tell20．--I’11 tell Mary about her new job tomorrow．--You ____her 1ast week．A．should have told B．ought to tellC．must tell D．would have told。

物理必修三答案练习册

物理必修三答案练习册一、选择题1. 根据牛顿第二定律，一个物体受到的合力越大，其加速度就越大。

以下哪个选项正确描述了这一定律？A. F = maB. F = mvC. F = ma²D. F = m/a答案：A2. 光在同一均匀介质中是沿直线传播的，这是基于哪个物理原理？A. 光的波动性B. 光的粒子性C. 光的直线传播原理D. 光的反射原理答案：C3. 根据能量守恒定律，在一个封闭系统中，能量不能被创造或销毁，只能从一种形式转换为另一种形式。

以下哪个选项正确地说明了能量守恒定律？A. ΔE = 0B. ΔE = QC. ΔE = WD. ΔE = Q + W答案：A二、填空题1. 一个物体的动能（K.E.）可以通过公式 ______ 计算，其中m是物体的质量，v是物体的速度。

答案：K.E. = 1/2 mv²2. 根据库仑定律，两个点电荷之间的静电力F与它们的电荷量q1和q2的乘积成正比，与它们之间的距离r的平方成反比，其公式为______ 。

答案：F = k (q1q2) / r²3. 一个物体在自由下落过程中，其速度v与下落时间t的关系可以用公式 ______ 表示。

答案：v = gt三、计算题1. 一个质量为5kg的物体在水平面上受到一个10N的恒定拉力，假设摩擦力忽略不计，求物体在5秒内移动的距离。

解答：首先，根据牛顿第二定律，F = ma，可以求出加速度a。

a = F/m = 10N / 5kg = 2 m/s²然后，使用公式s = 1/2 at²计算5秒内物体移动的距离。

s = 1/2 × 2 m/s² × (5s)² = 25 m2. 一个物体从高度h = 50m自由下落，求物体落地时的速度。

解答：使用公式v² = 2gh，其中g是重力加速度，取9.8 m/s²。

v² = 2 × 9.8 m/s² × 50 mv = √(2 × 9.8 m/s² × 50 m) ≈ 31.6 m/s结束语通过本练习册的练习，同学们应该能够更好地理解和掌握物理必修三的相关知识和计算方法。

高中英语人教版必修三练习：Unit 3 课下能力提升(十)含解析

Unit 3课下能力提升(十)Ⅰ.根据提示写出单词的正确形式1．Scientists had ________ (寻找) for a solution to the mystery, but they didn't find it.2．On reaching the station, the passenger found someone in rags ________ (游荡) around the station.3．There are a lot of ________ (过错) in that page; please correct them and email me next morning.4. —What are you ________ (凝视) at?—A flying object in the sky.5．As soon as he finished the letter, he took out of the ________ (信封) at once.6．You can't enter the room without your teacher's ________ (permit)．7．For the more ________ (adventure) tourists, there are trips into the mountains with a local guide.8．Her endless ________ (patient) made her the best nurse in the hospital.9．I was almost frightened to death at the sight of the frightening ________ (scenery)．10．He had a few ________ (penniless) in his pocket.Ⅱ.选词填空stare at, account for, bring up, go ahead, by accident, on the spot, on the contrary, care about 1．My car broke down halfway, which ____________ my being late for the meeting.2．—I'm sure you like your new job.—____________，it's dull.3．She doesn't like communicating with others and never ____________ what others think.4．—Could I use your pen, David?—____________. I'm not using it.5．Though ____________ in a big city, the boy likes being close to nature and animals.6．It is already midnight, but my father is still sitting in the armchair, ____________ the floor silently.7．Greenland was discovered ____________ by a man named Erik in the tenth century.8．I happened to be ____________ when the accident happened.Ⅲ.完成句子1．I ________________ by a group of children full of curiosity.我发现自己被一群充满好奇心的孩子围住了。

2021英语高中人教版必修第三册习题UNIT 3

UNIT3DIVERSECULTURESSectionA ListeningandSpeaking课后篇巩固提升基础夯实Ⅰ.单句填空1.I don’t really like the author,although I have( admit) his books are very答案to admit2.English is a language shared by several(diversity) cultures,which uses it答案diverse3.American(cook) often mixes things all over the world to make something答案cookingd better write down the key words when(take) notes.答案taking.Do you know when exactly the fortune cookies(invent)?答案were invented.After several months of voyage,Columbus arrived in was called America.答案what(注意动词的适当形式)die from,later on,save time,mix with,have an interview,in additionwe ran into real trouble.答案later onand effort.答案save timesometime in the afternoon.答案have an interview.You need money and time;,you need diligence.答案in additionstarvation.答案die fromwater sugar,it makes a pleasant,refreshing drink.答案mixed;withⅢ.完成句子1.老人打开了房门,发现地上覆盖着厚厚的雪。

人教版高中英语必修三Unit3TheMillionPoundBank-Note同步练习(三).docx

高中英语学习材料***鼎尚图文理制作***Unit 3 The Million Pound Bank-Note 同步练习(三)一、单项选择( )1. ——Do you mind my taking this seat?A. Yes, sit down, pleaseB. No, of course notC. Yes, take it, pleaseD. No, you can’t take it( )2. ——Would yogh like to have dinner with me?A. Not at allB. No, I’m busy nowC. That’s all rightD. I’d love to, but I’m busy now( )3. 一Do you want more tea? .一Yes, please _____ some more.A. Would likeB. 1ikeC. haveD. will drink( )4. ——I’d like to invite you to dinner tonight, but I’m short of money these days.一That’s all right. _____.A. I’ll help youB. It’s my treat this timeC. Help yourselfD. You’re welcome( )5. 一How are things going with you?A. Quite well, thank you.B. Good, and you?C. Good. Why not? D。

No, just so-so.( )6. ——The book isn’t easy for Jack to understand, is it?——. His foreign language is far better than expected.A. No, it isn’tB. I’m afraid notC. I don’t think soD. Yes. it is( )7. 一_____一With pleasure.A. Excuse me for interrupting you.B. Is there anything that I can do for you?C. Why not wear some flowers tonight?D. Would you hold my bike for a moment?( )8. ——When will your group go for the spring journey, next week or the week after?——_____A. Yes, we willB. At the end of the year, I thinkC. That dependsD. It’s my pleasure( )9. ——I can’t open the top of this apple juice.一—_____it.A. Mark has to doB. Do have Mark to doC. Have Mark doD. Mark do have( )1 0. ——I’d rather have some wine, if you don’t mind.——_____A. No, you’d better notB. Not at all, anything you wantC. Thank you all the sameD. Yes, but not good( )11. ——I’m entering for the garden, competition to be held in out city next week.——_____!A. CongratulationsB. Enjoy yourselfC. Good 1uckD. Wonderful( )12 一Why isn’t Picasso at the dance?一He Couldn’t come because he hurt his foot.—_____!A. That’s a shameB. Never mindC. Bad luckD. Don’t Worry about her( )1 3. 一I really thought I’d win the game.一Oh, well, _____,Bill.A. you are rightB. best wishes,C. better luck next timeD. Congratulations( )14. 一Do drop in to see US next time you come here.—_____A. Yes. I doB. Sure, I willC. With PleasureD. You are welcome( )15. ——I’m afraid I can’t finish the book within this week.一—_____A. Please go aheadB. Take it easyC. Not at allD. Take your time二、完形填空Can you imagine what life would be like if there were __1__ telephone? You c ouldn’t call __2__ your fiends on the phone and talk to them. If a fire __3__ in your house, you couldn’t call the fire department. If __4__ were sick you couldn’t call a doctor. In our daily life we __5__ to communicate with __6__. We do this __7__ by speaking to other people and listening to__8__they have t0 say t0 us, and when we are__9__them we can do this very easily. However our 110ises will not travel very far even__10__we shout, and it is __11__ to the invention of the telephone that weare__12__able to communicate with each other and hold talks when we are far apart We Call__13__each other as clearly __14__ we were in the__15__room.The mall who made this possible was Alexander Graham Be11, born in Edinburgh in l 847, Bell. a teacher of visible speech who later moved to Canada, __16__all his spare time experimenting. __17__ enthusiastic(热心的)was he in his research for a means of sending speech by __18__ that he left __19__ time for his day-to—day work and__20__was almost penniless.( ) 1. A. a B. no C. not D. many( ) 2. A. up B. on C. at D. for( ) 3. A. came B. appeared C. broke out D. took place( ) 4. A. he B. a man C. anyone D. someone( ) 5. A. are B. want C. need D. used( ) 6. A. you B. them C. the others D. one another( ) 7. A. mostly B. nearly C. almost D. just( ) 8. A. that B. what C. words D. when( ) 9. A. far from B. next to C. close to D. behind( ) 10. A. unless B. as if C. while D. when( ) 11. A. thanks B. because C. only D. according( ) 12. A. not B. yet C. still D. already( ) 13. A. see B. heal. C. 1isten to D. 1ook at( ) 14. A. as B. once C. when D. as if( )15。