《金版教程》必修二第五章 第一节 课后课时作业
金榜夺冠人教版必修2 课时作业Unit 5
一、语法填空专题训练(三)代词的选用◆技巧点拨当两个分句中间用逗号隔开，要求考生在第二个分句填入一个代词时，考生首先要弄清句子结构。
第二个分句前如有and, but, or，so 等连词，说明前后分句为并列关系，要用人称代词或指示代词。
第二分句前如无上述连词，说明它是一个非限制性定语从句，因此应填入关系代词。
如：Tom's mother kept telling him to work harder，but it didn't help.Tom's mother kept telling him to work harder，which didn't help.Mr.Green has four sons，all of whom are famous singers.Mr.Green has four sons，and all of them are famous singers.◆活学活用阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空，说出第2、3、4、6、7题的解题思路。
Y ou may be in a hurry to get your software released(发行) to the masses and start making lots of money，but if you fail to have it tested first __1__you release it，you are asking for ing a software testing service may delay the release of your software，but __2__will keep you from getting into trouble.A testing service is __3__that will test your software __4__look for bugs(漏洞，缺陷)，__5__ will help to ensure that the software program is working properly before it is released.__6__good reason to use a testing service is that they can detect problems __7__ can result in damages to a company by the software.So if you are starting __8__ own software designing company，do not skip this step.When you finally get to release your new software，you want to be able to know without a doubt that it is the __9__(good) software that it can be.It can make the difference between making and __10__(break) your software development business.二、完形填空(2010年北京卷)阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最佳选项。
《金版教程》必修二第五章 第七节 课后课时作业
A组：合格性水平训练1．(离心运动的理解)关于离心运动，下列说法中正确的是()A．物体一直不受外力作用时，可能做离心运动B．做匀速圆周运动的物体，在外界提供的向心力突然变大时做离心运动C．做匀速圆周运动的物体，只要向心力的数值发生变化便将做离心运动D．做匀速圆周运动的物体，当外界提供的向心力突然消失或数值变小时将做离心运动答案D解析物体一直不受外力作用，物体应保持静止状态或匀速直线运动状态，A错误；做匀速圆周运动的物体，所受的合外力等于向心力，当外界提供的向心力增大时，物体所需的向心力并没有增大，物体将做近心运动，B错误；做匀速圆周运动的物体，向心力的数值发生变化，物体可能仍做圆周运动，例如变速圆周运动，也可能做近心运动或离心运动，C错误；根据离心运动的条件可知，D 正确。
2．(航天器中的失重现象)(多选)航天飞机在围绕地球做匀速圆周运动过程中，关于航天员，下列说法中正确的是()A．航天员仍受重力作用B．航天员受的重力提供其做匀速圆周运动的向心力C．航天员处于超重状态D．航天员对座椅的压力为零答案ABD解析航天飞机在绕地球做匀速圆周运动时，依然受地球的吸引力，而且正是这个吸引力提供航天飞机绕地球做匀速圆周运动的向心力，航天员的加速度与航天飞机的相同，也是重力提供向心力，即mg＝m v 2R，A、B正确；此时航天员不受座椅弹力，即对座椅无压力，处于完全失重状态，D正确，C错误。
3．(凹桥模型)秋千的吊绳有些磨损，在摆动过程中，吊绳最容易断裂的时候是秋千( )A ．在下摆过程中B ．在上摆过程中C ．摆到最高点时D ．摆到最低点时答案 D解析 当秋千摆到最低点时速度最大，由F －mg ＝m v 2l 知，吊绳中拉力F 最大，吊绳最容易断裂，D 正确。
4. (拱桥模型)在较大的平直木板上相隔一定距离钉几个钉子，将三合板弯曲成拱桥形卡入钉子内形成拱形桥，三合板上表面事先铺上一层牛仔布以增加摩擦，这样玩具惯性车就可以在桥面上跑起来了。
2024-2025年北师大版英语必修第二册Unit5课时作业5(带答案)
课时作业(五) Writing Workshop, Viewing Workshop &Reading Clubs 1～2基础知识夯实Ⅰ.单词拼写1．The s________ (可怕的) earthquake made many people lose their homes and have to live in shelters.2．It proves that s________ (滑雪运动) is more popular around the world.3．Some escape skills are described in detail in the b________ (小册子).4．The rescuers have put up many s________ (避难所) to shelter the victims after the horrible earthquake.5．The sheet m________ (金属) under the brochure is designed for your teacher's experiment.6．V________ (各种各样的) animals and plants are easy to find in the jungle.7．More damage was caused to the area during the a________ (余震).8．After graduation, he chose to o________ (观察) apes in the jungle to carry on his research.9．Many animals are d________ (消失/消亡) because of excess hunting.10．His o________ (独创力) is seen in his novels.Ⅱ.单句语法填空1．Teachers are trying to develop students' sharp observation and unique ________ (original).2．Many creatures' ________ (disappear) is because of the huge climate change.3．This kind of insects look strange but are indeed ________ (harm).4．At the first attempt in the stadium last year, I was fond of ________ (ski).5．The police officer observed him ________ (drive) at 100 miles per hour.6．Trees were planted to shelter this area ________ strong sand storms.7．________ (vary) people have different ideas in the process of intelligence development.8．The ________ (scare) bomb caused the workers working in the mine to be trapped for 2 days.9．The animal, native only to China, is in danger of ________ (extinct) in the next 25 years.10．We often get the first impression of people ________ (base) on the colour of their skin or the manner in which they dressed.Ⅲ.用所给短语的适当形式填空if possible, hold on to, move away, be perfect for, be home to, be based on, leave alone, shelter...from, be harmless to1．If a little boy is ____________ in a crowded room, he may feel frightened.2．The scientist said this material ____________ the soil, so it was used bythe farmers.3．His success ____________ full preparations before the examination.4．This nature reserve can ____________ wildlife ____________ being disturbed by human beings.5．____________， we want to set out for the camp immediately.6．In some areas, people still ____________ that strange wedding custom.7．I found the landscape in these mountains ____________ photographing.8．He was curious about what made the whirlpool ____________ suddenly.9．Australia ____________ kangaroos.Ⅳ.根据提示补全句子1．如果可能的话，请在下周一公布考试结果。
2024-2025年北师大版英语必修第二册Unit5课时作业1(带答案)
课时作业(一) Topic Talk基础知识夯实Ⅰ.单词拼写1．A l________ (讲座) on how to survive natural disasters will be held in the college hall.2．O________ (过度使用) plastic must cause great disasters to the earth.3．I haven't worked out a better t________ (题目) for my lecture.4．Nowadays many experts are attaching much importance to disasters that c________ (气候) change may cause.5．To protect our world from disasters, we should learn about e________ (生态学).6．The small park across the street is usually not c________ (拥挤的) at this time of day.7．The parents were s________ (使震惊) by the news that their son needed an instant operation on his knee.8．The e________ (爆发) of any kind of disaster will bring a great loss to human beings.9．The l________ (风景) in the country is fantastic although there are sometimes hurricanes.10．The expert and his team workers are exploring the unique i________ (昆虫) in the jungle.11．Measures should be taken to keep the s________ (土壤) from being washed away in the flood.12．Flood is a kind of d________ (灾难) which often happens in the south of America.13．The PLA is often sent to save people from disasters, such as f________ (洪水) and landslides.14．D________ (干旱) often brings many deaths to animals and plants, whose damage equals other disasters.15．The professor made a speech to present his c________ (意见) on ecology.Ⅱ.单句语法填空1．If pesticides ________ (overuse) on fruits and vegetables, disasters may be caused to health.2．________ (million) of people are forced to leave their house before the eruption of the volcano.3．You can choose from these ________ (title) for your own essay on natural disasters.4．Sometimes scientists study those ________ (insect) from the jungle to infer the climate change there.5．The damage caused by the flood in the south ________ (shock) the whole country yesterday.6．When at college I was fond of most of Professor Liu's ________ (lecture) on ecology.7．Have you had any ________ (comment) about the cause of the disaster?8．The street once ________ (crowd) is empty now owing to the coming hurricane.9．We can spot some ________ (live) insects in the bush at night.10．The ________ (erupt) of the hurricane made many people leave their homeland for temporary peace.Ⅲ.根据汉语提示完成句子1．________________ (面对) selection from the company, you should show the best of you.2．They train you to ________________ (对……置之不理) courage, strength, and conscious living.3．These different ________________ (自然景观) had a direct effect on the local style of culture.4．In the study, scientists found ________________ (不同种类的) effects of the greenhouse gases.5．He ________________ (教了他们一个方法) of how to tell a person's identity.6．Obviously, ________________ (靠近) the authority made him know the news ahead of others.7．It has been confirmed that this new material's discovery and use ________________ (对……有用) the development of computers.8．When visiting the park, they ________________ (惊讶于) the varieties of plants in it.9．The path to Dawson was ________________ (被……覆盖) thirty feet of wet snow.10．________________ (结果), people will eat more food to try to make up for something that is missing.Ⅳ.一句多译1．他们必须使用中国生产的设备，因为他们别无选择。
高中英语 必修第二册 Unit 5 Music 课后练习、课时练习
一、根据首字母填写单词(单词拼写)1. F__________ in 1945, the United Nations aims to promote peace and cooperation between the countries for the common good of human beings. (根据首字母单词拼写)2. He was a________ the Nobel Prize for economics in 1978. (根据首字母单词拼写)3. He was sent to the hospital to receive t_________.二、根据汉语意思填写单词(单词拼写)4. It was really hard to _____ (证明) that he made such a big mistake. (根据汉语提示单词拼写)5. ________ (委派) by the King and Queen of Spain, Columbus departed with three ships. （根据汉语提示单词拼写）6. He tried to __________ (概述) his plans and attract the professor’s attention. (根据汉语提示单词拼写)三、根据中英文提示填写单词(单词拼写)7. Majors in medicine have to learn and are quite familiar with the s_____________(结构) of human body.8. T ________ (威胁) by human activities, some animals are facing great danger. (根据中英文提示填空)四、完成句子9. He _________________________ by teaching at a language school.他在语言学校教书以维持生计。
必修二金版教程创新导学案全册习题和P题和PPT-目录
第七章 机械能守恒定律
第1、2节 追寻守恒量——能量 功 第3节 功率 第4节 重力势能 第5节 探究弹性势能的表达式 第6节 实验：探究功与速度变化的关系 第7节 动能和动能定理
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第8节 机械能守恒定律 第9节 实验：验证机械能守恒定律 第10节 能量守恒定律与能源 专题 功的求法总结及常见的几种功能关系 章末复习讲座 第七章 章末检测（word） 模块综合检测(A卷) （word） 模块综合检测(B卷)（word）
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谢谢观看！
金版教程
人教版物理必修二
第五章 曲线运动
第1节 曲线运动 第2节 平抛运动 第3节 实验：研究平抛运动 第4节 圆7节 生活中的圆周运动 专题 圆周运动中的临界问题 章末复习讲座 第五章 章末检测（word）
第3页
第六章 万有引力与航天
第1、2节 行星的运动 太阳与行星间的引力 第3节 万有引力定律 第4节 万有引力理论的成就 第5、6节 宇宙航行 经典力学的局限性 专题 万有引力在天文学上的应用及人造卫星的相关问题 章末复习讲座 第六章 章末检测（word）
2021-2022学年人教版必修二Unit5usicusinglanguage课时作业(3)
Unit 5 Music using language课时作业第一节、完形填空阅读下面短文, 从每题所给的A、B、C、D四个选项中选出可以填入空白处的最佳选项。
My mum was a consultant psychiatrist(精神病医师) at Lancaster Moor hospital. At five, I went with her to the 1 on a Christmas afternoon. I didn't really want to be there, knowing I had not yet opened all my 2 at home. Mum gave me a big box of chocolates and told me to 3 around the psychogeriatric ward.Our household was the sort where treats were strictly 4 only one packet of crisps a week. So being entrusted(交托) with a huge box of chocolates was 5 indeed. I marched proudly around the ward, operating a "one for you, one for me" policy 6 I went from bed to bed, wondering why no one I talked to 7 .When you are 8 , so much of life is new and strange that you quickly accept even the strangest things as being 9 normal. But I remember thinking it was 10 that so many of these very old women were holding dollies(洋娃娃) and teddy bears tight.On the way home, feeling slightly 11 after all the chocolates, I asked Mum why the old ladies had dolls and why they had talked such nonsense. I can't remember herexact 12 , but I learned that most of them had no family, and received no 13 .That Christmas taught me not to be afraid of people with 14 illness. I wasn'teven 15 when my mother put me on the trolley(手推车) in the corridor outside her office if she was busy in the ward.1.A.hospital B.school C.grocery D.restaurant2.A.books B.presents C.suitcases D.mailboxes3.A.promote B.taste C.distribute D.choose4.A.examined B.purchased C.forbidden D.controlled5.A.exciting B.upsetting C.demanding D.confusing6.A.before B.after C.as D.until7.A.follow suit B.took office C.lost heart D.made sense8.A.alone B.old C.free D.little9.A.barely B.bitterly C.perfectly D.hardly10.A.odd B.nice C.right D.certain11.A.fortunate B.energetic C.unconscious D.uncomfortable12.A.reaction B.explanation C.instruction D.motivation13.A.consultants B.visitors C.honour D.treatment14.A.mental B.deadly mon D.infectious15.A.satisfied B.embarrassed C.bothered D.relieved【参考答案】：1-5 ABCDA 6-10 CDDCA 11-15 DBBAC第二节、语法填空阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。
金牌教程数学必修二课时作业电子版
金牌教程数学必修二课时作业电子版1.下列说法中正确的个数是①身高是一个向量:②∠AOB的两条边都是向量:③温度含零上和零下温度,所以温度是向量;④物理学中的加速度是向量.A.0B. 1C.2D.3解析:选B身高只有大小，没有方向，故①不是向量，同理③不是向量;对②,∠AOB 的两条边只有方向，没有大小，不是向量;④是向量.故选B.2.下列说法正确的是A.若|al=|b|, 则a=bB.零向量的长度是0C.长度相等的向量叫相等向量D.共线向量是在同一条直线上的向量解析:选B对A当a=|b时，由于a, b方向是任意的，a=tb未必成立，所以A错误;对B,零向量的长度是0,正确;对C，长度相等的向量方向不一定相同，故C错误; 对D，共线向量不一定在同一条直线上，故D错误。
故选B.3.汽车以120 km/h的速度向西走了2 h,摩托车以45 km/h的速度向东北方向走了2 h, 则下列命题中正确的是A.汽车的速度大于摩托车的速度B.汽车的位移大于摩托车的位移C.汽车走的路程大于摩托车走的路程D.以上都不对6.下列叙述:单位向量都相等:若一个向量的模为0,则该向量的方向不确定:共线的向量，若起点不同，则终点一定不同;方向不同的两个向量一定不平行.其中正确的有解析: 错误.单位向量模都相等，但是方向不一定相同.正确。
若一个向量的模为0,则该向量是零向量，其方向不确定，是任意的.错误.共线的向量，若起点不同，但终点有可能相同.错误、方向相反的两个向量一定平行.答案:7.若a为任一非零向量，b为单位向量，下列各式:a|>|b|; a//b; a>0; b|=+1;若ao是与a同向的单位向量，则ao=b.其中正确的是解析:对, 不一定有|a|>|b|:对, a与b方向不一定相同或相反:对, 非零向量的模必大于0，即|a|>0; 对，向量的模非负:对, ao与b方向不一定相同。
综上可知正确。
必修二Unit 5 Music Learning about Language课时作业
Unit 5 Music Learning about Language课时作业第一节. 用适当的“介词+关系代词”填空1. There comes Tom, for whom I have been waiting an hour or so.2. He handed me a pen with which I wrote down his phone number.3. The university in which my brother once studied is very famous.4. Our school is very beautiful, of which we are greatly proud.5. Thank you for your help, without which we couldn’t have finished it on time.6. This is the man from whom I learned a lot in my life.7. Wang Hong, with whom I went to the concert, enjoyed herself very much.8. John invited about 40 people to his wedding, most of whom are family members.9. He wrote a lot of novels, none of which were popular.10. Gun control is a subject about which Americans have argued for a long time.第二节. 语法填空阅读下面短文, 在空白处填入1个适当的单词或括号内单词的正确形式。
Thomas is 1. undergraduate student at Simon Fraser University. Three years ago, he was pursuing a science degree with the goal of2. (become) a nurse but he was unsure of his next steps.One day 3. he was attending a classroom presentation, Thomas learned about the YWCA’s Boys 4 Real program. “ It was a unique experienc e to work with the youth, where you are giving 4. (they) skills to prepare for high school. ”Thomas 5. (volunteer) for the program for over 3 years. His favourite parts are the community service and healthy living units, where he canshare and apply what he’s learning in university. The community service project, in 6. volunteers lead the youth of Grade 7 to visit a senior’s home or collect cans for a food bank, is 7. (especial) meaningful to Thomas.V olunteering with the YWCA has helped Thomas see the impact(强大作用) that can 8. (make) by him as a mentor(导师). Boys 4 Real gave him a9. (clear) direction of where he is heading professionally than before. Now he has made up his mind 10. (continue) to stay at a school being a teacher after finishing his Bachelor’s degree.1.【解析】an。
高一化学金版教程必修二作业与测评
高一化学金版教程必修二作业与测评英文版Title: Chemistry Workbook and Assessment for Grade 11, Mandatory Course Volume 2IntroductionChemistry, a fascinating subject, explores the composition, structure, properties, and reactions of matter. As students progress to Grade 11, they delve deeper into the wonders of this science, building a solid foundation for their future academic pursuits. This workbook and assessment guide aims to support students in mastering the concepts and skills outlined in the Chemistry syllabus for Grade 11, Mandatory Course Volume 2.Workbook ContentThe workbook is designed to reinforce and expand upon the topics covered in class. It includes a range of exercises that cover all the key areas of the course, from fundamentalchemical principles to more complex reactions and calculations. The questions are carefully crafted to ensure gradual progression in difficulty, allowing students to build confidence and expertise as they progress.Assessment GuidelinesRegular assessments are crucial for monitoring student progress and identifying areas that need improvement. This workbook includes practice assessments that simulate the format and difficulty level of actual exams. These assessments help students familiarize themselves with exam conditions, allowing them to perform better on the big day.ConclusionBy working through this workbook and practicing the assessments, students can gain a comprehensive understanding of the Chemistry course for Grade 11, Mandatory Course Volume 2. This, in turn, will prepare them well for their exams and future academic challenges in the field of Chemistry.中文版标题：高一化学金版教程必修二作业与测评介绍化学是一门引人入胜的学科，它探索物质的组成、结构、性质和反应。
2022-2021年《金版学案》英语·人教版必修2练习：Unit 5Music
Unit 5Music【导语】音乐是人类最秀丽的语言。
一起走近不同的音乐表现形式吧！MusicThere are two important kinds of music in the world—one is written down and the other is not.Many people earn their living by writing music.They write songs for pop stars and music for films and TV plays.They usually write exact instructions how the music is to be played.Folk music has been passed down from one generation to another.At first it was never written down.People learnt the songs from their families，relatives，neighbours and friends in the same village.These songs were about country life，the seasons，animals and plants，and about love and sadness in people's lives.Early performers used to learn hundreds of songs by heart.At festivals they used to act and sing in praise of heroes who lived long ago.This was at a time when there was no radio，TV or cinema.Many of the country people could neither read nor write.In this way stories were passed on from one person to another.This continues in some countries even today.In some parts of the world nowadays，you often see musicians performing in the streets to passers－by.They put a cap on the ground in front of them，so that people who like the music can drop coins into it.In Africa most music is folk music.It plays an important part in people's lives，especially at festivals and weddings，when people dance all night long.Indian music is not written down.There is a basic pattern of notes which the musicians follow.But a lot of modern music is also written.India produces more films than any other country in the world.It produces musicals too，that is，films with music，and millions of records are sold every year.Jazz was born in the USA around 1890.It came from work songs sung by black people and had its roots in Africa.Jazz started developing in the 1920s in the southern states.Soon it was played by white musicians，too，and reached other parts of the USA.【词海拾贝】1．instruction n．指示；说明2．relative n．亲戚；亲属3．passer－by n．过路人4．pattern n．模式5．musical n．音乐喜剧【问题思考】阅读短文，推断正(T)误(F)。
英语必修2Unit 5 Music课时作业Discovering Useful Structures
Discovering Useful Structures—Vid eo Time〖小题夯基〗维度一——单词拼写1．The piano (钢琴) took up too much space，so I removed it from the room.2．As is known to all，education is a gradual (渐进的) process.3．The entire village was destroyed.It now looks different from the previous (先前的) one.4．At a young age，Taylor already made a major impact (影响) on music.5．The outline (概述) of the talk is how to balance work and family.6．Somehow (不知怎么地)，I lost my keys on my way home.7．We assume (假定) him to be innocent before collecting the evidence against it. 8．Tom is romantic (浪漫的)，for he always sends his wife red roses on her birthday. 维度二——词形变化1．This method of treatment (treat) was not successful with the patient.2．Having rid the company of the heavy debts，the manager smiled with satisfaction (satisfy)．3．From this point forward，many developers helped to make various (vary) types of computer.4．Her parents’ reaction (react) to the news was surprisingly calm.5．I don’t think he is talented (talent) in expressing himself on paper.6．The company has decided to buy some modern equipment (equip)．7．He set about learning (learn) to play chess at an early age.8．Much to our relief (relieve)，the piano was not seriously damaged.维度三——固定用法和常用句式1．It’s__great__to__hear__from__you．I feel proud of knowing your interest in Chinese culture.(It’s＋adj.＋to do...)很高兴收到你的来信。
《金版教程》必修二第五章 第四节 课后课时作业
A组：合格性水平训练1．(对匀速圆周运动的认识)对于做匀速圆周运动的物体，下列说法中不正确的是()A．相等的时间内通过的路程相等B．相等的时间内通过的弧长相等C．相等的时间内通过的位移相等D．在任何相等的时间里，连接物体和圆心的半径转过的角度都相等答案C解析匀速圆周运动是指线速度大小不变的圆周运动，因此在相等时间内通过的路程相等，弧长相等，转过的角度也相等，A、B、D正确；相等时间内通过的位移大小相等，方向不一定相同，故C错误。
2．(角速度、周期和转速)(多选)一精准转动的机械钟表，下列说法正确的是()A．秒针转动的周期最长B．时针转动的转速最小C．秒针转动的角速度最大D．秒针的角速度为π30rad/s答案BCD解析秒针转动的周期最短，角速度最大，A错误，C正确；时针转动的周期最长，转速最小，B正确；秒针的角速度为ω＝2π60rad/s＝π30rad/s，故D正确。
3. (线速度与角速度)如图所示是一个玩具陀螺，a、b和c是陀螺上的三个点，当陀螺绕垂直于地面的轴线以角速度ω稳定旋转时，下列表述正确的是()A ．a 、b 和c 三点的线速度大小相等B ．a 、b 和c 三点的角速度大小相等C ．a 、b 的角速度比c 的大D ．c 的线速度比a 、b 的大 答案 B解析 同一玩具陀螺上的三点绕同一竖直轴转动，因此角速度相同，B 正确，C 错误；c 的半径最小，故它的线速度最小，a 、b 的半径相同，二者的线速度大小相等，A 、D 错误。
4. (传动问题)如图所示，甲、乙、丙三个齿轮(齿未画出)的半径分别为r 1、r 2、r 3，并且r 1＜r 2＜r 3。
若甲齿轮的角速度为ω1，则丙齿轮的角速度为( )A.r 1ω1r 3B.r 3ω1r 1C.r 3ω1r 2D.r 1ω1r 2答案 A解析 甲、乙、丙三个齿轮边缘上各点的线速度大小相等，即r 1ω1＝r 2ω2＝r 3ω3，所以ω3＝r 1ω1r 3，A 正确。
北师大版必修二 Uint 5 Lesson 1~2课时练
北师大版必修二Unit 5 Lesson 1~2课时练I.词汇练习1.His parents’ behavior had a great （影响）on him.2.I’m sorry to （使失望）you, but there aren’t any tickets left.3.（一般）speaking, learning hard is worth in the end after all.4.Do you know who has won the best actress （奖）this year?5.My mobile phone is （非常地）useful.6.You’re a （有影响力的）man-----people will listen to you.7.He was filled with （气愤）at the way he had been treated.8.The （观众）were clapping for 5 minutes.9.This mark （代表）a village in the map.10.（民间的）music is passed down from generation to generation.II. 单句填空1.Although he had only met the girl once, she had made a deep （impress）on him.2.The old lady was used to （live）in the countryside.3.The film is based a true story.4.It’s hard （combine）family life with a career.5.Her （perform）impressed the audience deeply.6.When I was little, my mother used to sit by my bed, （tell）me stories till I fell asleep.7.is often the case with old people, may grandfather is fond of talking about good old days.8.I can’t remember how the song goes, I’ll recognize it when I heard it.9.He went though with his plan his friends advised him to abandon it.10.My brother went to Guangzhou last year and it was not long he found a new job. 答案：I.1.effect2. disappoint3. Generally4.award5.extremely6.powerful7.anger8.audience9.represents 10.folkII.1. impression 考查词性转换句意：尽管只见过她一次，但这女孩却给他留下了深刻的印象。
必修2 Unit 5 Music 课时作业 高效提能
单独成册：对应学生用书第236页Ⅰ.阅读理解Most people know that listening to music when they are feeling down or depressed can encourage their spirits.However，studies have also shown that music，especially certain tones can reduce stress.Music can change brainwave patterns，deepen breathing，and bring on a totally stress-free and more open mindset(思维倾向)．Using music to relax when considering a particular problem may not only raise your mood，but also could help you reach that “a-ha” moment and find a solution.Music has also been shown not only to make you feel good，but also，to be a great motivator.For example，during exercise，listening to music can keep you going，or get you to exercise more by helping you to ignore negative feelings of tiredness and focus on the pleasurable feelings you get from being absorbed in the music.Music is mainly used to record emotion.When we listen to a piece of music we share the artist's feelings on a visceral (发自内心的)level.That can be sad，and who among us hasn't put on a painful love song to share in the misery after a bad break-up？On the contrary，we can share in the delight of songs of joy and happiness，or any song or piece of music that reminds us of a particular happy time in our past.So next time you are feeling down，put on Beethoven's Ode to Joy，I bet you will feel a lot better about whatever it was that was bothering you![语篇解读]本文是一篇说明文。
金版教程课时作业必修二化学电子版
金版教程课时作业必修二化学电子版
1.[2015-东莞高―检测]下列有关氧化还原反应的叙述中，正确的是()
A.一定有电子的转移
B.氧化反应一定先还原反应发生
C.氧化剂发生氧化反应
D.其本质是元素化合价发生变化
解析﹑礼化还原反应的本质是电子的转移，特征是元素化合价发生变化，A正确，D错误;氧化反应与还原反应同时发生，反应中氧化剂得电子发生还原反应，B、C错误。
答案A
2.下列关丁氧化还原反应的叙述止确的是()A.H还原CuO的反应只属于还原反应
高温
B．置换反应都是氧化还原反应，所以，3CO+FezOs2Fe l 3Co,既是置换反应又是氧化还原反应
电火花
c. 3o220,是氧化还原反应D.复分解反应一定不是氧化还原反应
解析﹑氧化还原反应是一个整体，氧化反应和还原反应必然同时发生
A
在同一个反应中，在H+CuO—Cu十HsO过程中，对CuO而言是失去氧被还原，发生了还原反应，对H而言，则是得到氧被氧化，发生了氧化反应。
置换反应都是氧化还原反应，但CO与FezOa的反应不是置换反应，所以B错。
复分解反应只是反应物互相交换成分重新组合成新的物质，没有电子
转移，所以，复分解反应一定不是氧化还原反应。
C中反应前后氧元素的化合价都没变化，属于非氧化还原反应。
答案D
3.[2014-杭州七中高一期中]下列反应中不属于氧化还原反应的是
A. NO+NO+2NaOH=2NaNO,+H,o
B. NHa+HCl===NH,CI
C. Br,l 2KIe—I,l2KBr
D. 2H;O=—2HsO+Ot
解析B选项中的反应中各元素化合价均无变化，不属于氧化还原反应。
答案B。
【金版新学案】（陕西专用）2021届高考英语大一轮温习 Unit 5 Music课时作业必修2(1)
课时作业(十) 必修2 Unit 5 MusicⅠ.单词拼写1．Wellknown sportsmen can________(赚) a great deal of money by advertising clothes and equipment.2．May I give you a(n)________(简要的) introduction to our company?3．She closed her eyes and________(假装) to be asleep when hearing her parents come back.4．We appreciated his________(献身) of time and money to the project.5．Two experiments were________(实施，做) to test whether the medicine did any harm to patients.6．Events in early childhood help to________(形成) our personalities in later life.7．I hear the concert will be________(广播) live on TV tomorrow evening.8．I need you to message me your full name and address so that I can send you the________(邀请函) to their wedding.Ⅱ.单项填空1．(2021·浙江四校调研)—Tom often plays the record very loud at midnight in his apartment.—________！A．Just your luck B．Better notC．It can’t be helped D．That’s too much2．(2021·河南省实验中学月考)It is reported that a similar technique can be________to the treatment of cancer.A．applied B．attachedC．added D．compared3．(2021·杭州一检)She paused________over the unfamiliar word but soon continued.A．frequently B．brieflyC．anxiously D．casually4．(2021·乌鲁木齐地域高三第一次诊断)________means that you have a positive attitude toward your abilities and life.A．Be confident B．Being outgoingC．To be outgoing D．Being confident5．(2021·石家庄高中温习教学质检)I always try to be________to others when walking my pet dog along a pavement and step to the side with my dog to let them pass by.A．flexible B．considerateC．devoted D．sensitive6．(2021·石家庄模拟)The company provides cheap Internet access.________，it makes shareware freely available.A．In addition B．In generalC．In return D．In brief7．(2021·福建师大附中高三质检)—I am sorry I didn’t finish the task.—Never mind.________，you have tried your best.A．Above all B．In allC．At all D．After all8．(2021·四川省南充市第一次适应性考试)My favorite writer is Mo Yan，some of ________novels have a surprising ending.A．whom B．hisC．whose D．which9．(2021·湖南邵阳市模拟)Emperor Kangxi came to this village twice，thus________it the name Huangcheng.A．to earn B．earningC．earned D．earn10．(2021·苏锡常镇四市调研)—How was your interview for going abroad to study?—Oh，I couldn’t feel any________.I hardly understood most of the questions they asked.A．worse B．harderC．happier D．better11．(2021·江苏四校第四次考试)The flood has caused a lot of damage to that area and the figures of the missing________shortly.A．will be published B．have been publishedC．had been published D．are published12．(2021·邯郸模拟)I don’t think it right to________jok es on the disabled，especially when they are in trouble.A．put B．keepC．find D．play13．(2021·济南3月模拟)The basic design of the car is very similar to________of the earlier model.A．that B．itC．this D．one14．(2021·温州质检)It is________tradition for people in this country to pay in________cash when buying things.A．the；/ B．a；/C．；/the D．a；the15．(2021·北京四中期中)The children________very well last night and the audience were attracted by their play.A．permitted B．performedC．pretended D．presentedⅢ.阅读明白得A(2021·安徽省芜湖三校高三第一次模拟考试)Teachers and parents usually call attention to the pictures when they read storybooks to preschool children.But a new study suggests that calling attention to the words and letters on the page may lead to better readers.The twoyear st udy compared children who were read in this way in class with children who were not.Those whose teachers most often discussed the print showed clearly higher skills in reading，spelling and understanding.These results were found one year and even two years later.Shayne Piasta，an assistant professor of teaching and learning at Ohio State University，was an author of the study.She says most preschool teachers would find this method manageable and would need only a small change in the way they teach.They already read storybooks in class.The only difference would be increased attention to the printed text.“If you get children to pay attention toletters and words，it makes sense that they will do better at word recognition and spelling.” But she says research suggests that very few parents and teachers do this in a systematic way.More than 300 children aged four and five were observed in classrooms.They came from poor families and were below average in their language skills.For thirty weeks，the children took part in a program called Project STAR—Sit Together and Read.The project is based at Ohio State.It tests the shortterm and longterm results of reading regularly to preschool children in their classrooms.There are different ways that adults can talk to children about print.They can point to a letter and discuss it，and even trace the shape with a finger.They can point out a word and discuss the meaning of the print or how the words tell the story.And they can talk about the organization of the print—for instance，showing how words are written left to right in English.1．What do we know about the ways preschool children are usually taught?A．Preference is given to the shape of letters and the organization of the print.B．More attention is paid to the pictures，with words and letters being ignored.C．The focus of the teaching is on bringing them up to be good readers.D．Equal attention is paid to the texts and the pictures.2．What does Shayne Piasta suggest preschool teachers should do in class?A．Teach children how to draw pictures to get an idea of what they mean.B．Adopt different methods according to the students’ difference in reading skills.C．Change the way they teach and pay more attention to words and letters.D．Read storybooks to children rather than explain the meaning of the pictures.3．Which of the following is TRUE about the study on language skills of preschool children?A．Many teachers want to change their way of teaching preschool children.B．Attention on the pictures has made the children uninterested in reading.C．Teachers are often prevented from taking different approaches to language teaching.D．Project STAR aims to research into the results of reading books to preschool children in the classroom.4．Which section of a magazine does the passage probably come from?A．Fashion. B．Economy.C．Education. D．Entertainment.Ⅳ.信息匹配(2021·陕西省长安一中等五校高三一模)A．Beijing had its heaviest traffic jam.B．Measures are taken to solve the problem.C．Mooncakes sell well.D．Mooncakes made with gold and silver are expensive.E．Big cities are suffering from heavy traffic.F．People are busy developing their connections during festivals.1.In a society that strongly stresses connections，festivals provide the best chance to develop and maintain relationships through giving gifts，but they also contribute to corruption (腐败)．The worst traffic jam Beijing has suffered from in a year has once again focused people’s attention on “holiday corruption”．2.The capital suffered from the heaviest traffic jam of thee year on Tuesday，with rain making the situation worse.As the MidAutumn Festival and the National Day holidays approach，the Beijing Municipal Commission of Transport warned on Monday that the traffic jam in the capital will reach its peak this week.3.Beijing，other big cities such as Shanghai and Guangzhou，and also major cities that are political and business centers，are also suffering from heavy traffic jams before the holiday.Traffic jams are already a daily problem in some cities，due to the increasing number of cars and poor road designs.However，people driving across cities with gifts aimed at boosting their connections are worsening the situation.4.It is also reported that mooncakes made with gold and silver are selling well these days.Onesalesperson told the reporter that the gold mooncakes，priced at 47,620 yuan and silver ones at the price of 850 yuan per package，are favored by many companies.5.Efforts to stop holiday corruption have been promoted for many years.Some local governments have even issued bans on expensive cigarettes or alcohol.Some also forbid civil servants from accepting gifts and attending social banquets before holidays.Ⅴ.短文改错(2021·陕西省宝鸡市质量检测三)Jack has regarded as a young hero in his town for his heroic deed.The other day，Jack was going home by bike as usual while he heard a woman screaming for help.Then he was riding quickly towards the direction of the voice.At the corner，he saw a woman stopping by a man with a knife in her hand.Without hesitation，Jack made a immediate dive for the robber and controlled him by held him down against the ground.A few minutes later，three policeman came and took the robber away.Slight wounded as he was in the left hand，but since then he has become wellknown as a young hero all over the town.课时作业(十)Ⅰ.单词拼写1．earn 2.brief 3.pretended 4.devotion 5.performed 6.form 7.broadcast 8.invitation Ⅱ.单项填空1．解析：考查交际用语。
必修二金版教程创新导学案全册习题和P和PPT-5-006
3. 求合力：钢球在转动过程中受到重力 mg 和细线拉力 FT， 通过测量_半__径__和__高__度__．可求出 tanθ＝hr，钢球的受力如图所示．钢 球所受合力 F＝_m__g_t_a_n_θ__＝mhgr.
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4. 结论：代入数据后比较计算出的向心力 Fn 和钢球所受合 力 F 的大小，即可得出结论：钢球需要的__向__心__力__等于钢球所 受力的__合__力___．
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二、实验验证 1. 装置：细线下面悬挂一个钢球，用手带动钢球使它在某 个水平面内做匀速圆周运动，组成一个圆锥摆且 θ 很小，如图所 示．
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2. 计算向心力：用秒表测出钢球运动 n 圈所用的时间 t，测 出钢球做匀速圆周运动的半径 r，则钢球的线速度大小 v＝2πtrn， 由于预先用天平测出了钢球的质量 m，代入公式 Fn＝mvr2中可知 钢球的向心力 Fn＝4mπt22rn2.
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A. 圆筒壁对车的静摩擦力 B. 筒壁对车的弹力 C. 摩托车本身的动力 D. 重力和摩擦力的合力
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[解析] 在竖直的壁上的摩托车只受三个力作用，其中竖直 方向上重力与摩擦力是一对平衡力，水平方向上筒壁对车的弹力 提供了车子和人整体做匀速圆周运动的向心力，B 正确．
[答案] B
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例如：用一细线系一小球在竖直平面内做变速圆周运动，在 向下加速运动过程的某一位置 A 和向上减速运动过程的某一位 置 B，小球的受力情况如图所示．
比较可知，匀速圆周运动和变速圆周运动受力情况的不同 是：匀速圆周运动中，合力全部用来提供向心力，合力指向圆心； 变速圆周运动中，合力沿着半径方向的分量提供向心力，合力不 一定指向圆心．
[答案] BC
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A组：合格性水平训练
1．(曲线运动的理解)(多选)下列关于曲线运动的说法正确的是()
A．物体所受合外力一定不为零，其大小方向都在不断变化
B．速度的大小和方向都在不断变化
C．物体的加速度可能变化，也可能不变化
D．一定是变速运动
答案CD
解析做曲线运动的物体速度方向时刻改变，D项正确。
当F合为恒力时，加速度恒定，物体做匀变速曲线运动；当F合为变力时，加速度不断改变，物体做非匀变速曲线运动，A项错误，C项正确。
当F合方向始终与速度方向垂直时，物体的速度方向时刻变化，但速度大小不变，B项错误。
2．(曲线运动的条件)对做曲线运动的物体，下列说法正确的是()
A．速度方向与合外力方向不可能在同一条直线上
B．加速度方向与合外力方向可能不在同一条直线上
C．加速度方向与速度方向有可能在同一条直线上
D．合外力的方向一定是变化的
答案A
解析由物体做曲线运动的条件可知，速度方向与合外力(加速度)方向不在同一条直线上，所以A正确，C错误；根据牛顿第二定律，加速度与合外力一定同向，所以B错误；在恒力作用下，物体也可以做曲线运动，只要合外力方向与速度方向不共线就可以，D错误。
3. (两分运动的合成)(多选)如图所示，某同学在研究运动的合成时做了如下活动：用左手沿黑板推动直尺竖直向上运动，运动中保持直尺水平，同时用右手沿直尺向右移动笔尖。
若该同学左手的运动为匀速运动，右手相对于直尺的运动为初速度为零的匀加速运动，则关于笔尖的实际运动，下列说法中正确的是()
A．笔尖做匀速直线运动
B．笔尖做匀变速直线运动
C．笔尖做匀变速曲线运动
D．笔尖的速度方向与水平方向夹角逐渐变小
答案CD
解析由题意知，笔尖的初速度竖直向上，水平向右的加速度恒定，故做匀变速曲线运动，A、B错误，C正确；由于竖直方向速度大小恒定，水平方向速度大小逐渐增大，故笔尖的速度方向与水平方向的夹角逐渐变小，D正确。
4. (力、速度与曲线轨迹的关系)(多选)如图所示，一个质点沿轨道ABCD运动，图中画出了质点在各处的速度v和质点所受合力F的方向，其中可能正确的是()
A．A位置B．B位置C．C位置D．D位置
答案BD
解析当F＝0时，质点将做直线运动，故A错误；曲线上点的速度方向为该点的切线方向，轨迹向合力的方向一侧弯曲，故B、D正确，C错误。
5. (力、速度与曲线轨迹的关系)一个质点在恒力F作用下，在xOy平面上从O点运动到B点的轨迹如图所示，且在A点时的速度方向与x轴平行，则恒力F 的方向可能是()
A．沿＋x方向B．沿－x方向
C．沿＋y方向D．沿－y方向
答案D
解析根据曲线运动的轨迹位于速度方向和合力方向所夹的范围内且向合力方向弯曲，可知A、B、C错误，D正确。
6．(合力与曲线运动)(多选)质点在三个恒力F1、F2、F3的共同作用下保持平衡状态，若突然撤去F1，保持其他力不变，则质点()
A．一定做匀变速运动B．一定做直线运动
C．一定做非匀变速运动D．可能做曲线运动
答案AD
解析由题意可知，当突然撤去F1时，质点受到的合力大小等于F1的大小，方向与F1相反，质点的加速度恒定，一定做匀变速运动，故A正确，C错误。
在撤去F1之前，质点保持平衡，有两种可能：一是质点处于静止状态，则撤去F1后，质点做匀变速直线运动；二是质点处于匀速直线运动状态，则撤去F1后，质点可能做直线运动(条件是：F1的方向和速度方向在同一条直线上)，也可能做曲线运动(条件是：F1的方向和速度方向不在同一条直线上)，故B错误，D正确。
7．(合力与曲线运动)(多选)质量为m的物体，在F1、F2、F3三个共点力的作用下做匀速直线运动，保持F1、F2不变，仅将F3的方向改变90°(大小不变)后，物体可能做()
A．加速度大小为F3
m的匀变速直线运动
B．加速度大小为2F3
m的匀变速直线运动
C．加速度大小为2F3
m的匀变速曲线运动
D．匀速直线运动
答案 BC
解析 物体在F 1、F 2、F 3三个共点力作用下做匀速直线运动，必有F 3与F 1、F 2的合力等大反向，当F 3大小不变，方向改变90°时，F 1、F 2的合力大小仍为
F 3，方向与改变方向后的F 3夹角为90°，故F 合＝2F 3，加速度a ＝F 合m ＝2F 3m 。
若初速度方向与F 合方向共线，物体做匀变速直线运动；若初速度方向与F 合方向不共线，物体做匀变速曲线运动。
故A 、D 错误，B 、C 正确。
8. (综合)一只小船过河，运动轨迹如图所示。
水流速度各处相同且恒定不变，方向平行于岸边；小船相对于静水分别做匀加速、匀减速、匀速直线运动，船相对于静水的初速度大小均相同、方向垂直于岸边，且船在过河过程中船头方向始终不变。
由此可以确定( )
A ．船沿AD 轨迹运动时，船相对于静水做匀加速直线运动
B ．船沿三条不同路径渡河的时间相同
C ．船沿AB 轨迹过河所用的时间最短
D ．船沿AC 轨迹到达对岸前瞬间的速度最大
答案 D
解析 因为三种运动船的船头垂直河岸，相对于静水的初速度相同，垂直河岸方向运动性质不同，河的宽度相同，则过河时间不等，B 错误；加速度的方向指向轨迹的凹侧，依题意可知，AC 轨迹是匀加速运动，AB 轨迹是匀速运动，AD 轨迹是匀减速运动，从而知道AC 轨迹过河时间最短，A 、C 错误；沿AC 轨迹在垂直河岸方向是加速运动，故船到达对岸的速度最大，D 正确。
9．(小船渡河问题)小船在200 m 宽的河中横渡，水流速度是2 m/s ，小船在静水中的航速是4 m/s 。
求：
(1)要使小船渡河耗时最少，应如何航行？最短时间为多少？
(2)要使小船航程最短，应如何航行？最短航程为多少？
答案 (1)船头正对河岸航行耗时最少，最短时间为50 s
(2)船头偏向上游，与河岸成60°角，最短航程为200 m
解析(1)如图甲所示，船头始终正对河岸航行时耗时最少，即最短时间t min
＝d v船＝200
4s＝50 s。
(2)如图乙所示，航程最短为河宽d＝200 m，即应使v合的方向垂直于河岸，
故船头应偏向上游，与河岸成α角，有cosα＝v水
v船
＝2
4
＝1
2
，解得α＝60°。
B组：等级性水平训练
10. (曲线运动的合力与轨迹的关系)如图所示，在一次救灾工作中，一架离水面高为H，沿水平直线飞行的直升机A，用悬索(重力可忽略不计)救护困在湖水中的伤员B，在直升机A和伤员B以相同的水平速率匀速运动的同时，悬索将伤员吊起。
设经时间t后，A、B之间的距离为l，且l＝H－t2，则在这段时间内关于伤员B的受力情况和运动轨迹正确的是()
答案A
解析伤员在水平方向匀速运动，所以F、G都在竖直方向上，根据l＝H －t2，可知B在竖直方向上是匀加速上升的，悬索中拉力大于重力，即表示拉力F的线段要比表示重力G的线段长；向上加速，运动轨迹向上弯曲，只有A符合。
11. (绳联物体速度的分解)如图所示，中间有孔的物块A套在光滑的竖直杆上，通过滑轮用不可伸长的轻绳将物体拉着匀速向上运动。
则关于拉力F及拉力作用点的移动速度v的下列说法正确的是()
A．F不变、v不变B．F增大、v不变
C．F增大、v增大D．F增大、v减小
答案D
解析设与A相连的绳子与竖直方向的夹角为θ，因为A做匀速直线运动，在竖直方向上合力为零，有F cosθ＝mg，因为θ增大，则F增大，拉力作用点的移动速度即为物块A沿绳子方向上的分速度，v＝v物cosθ，因为θ增大，则v 减小。
D正确。
12．(综合)(多选)一快艇从离岸边100 m远的河流中央向岸边行驶。
已知快艇在静水中的速度图象如图甲所示；河中各处水流速度相同，且速度图象如图乙所示。
则()
A ．快艇的运动轨迹一定为直线
B ．快艇的运动轨迹一定为曲线
C ．快艇最快到达岸边，所用的时间为20 s
D ．快艇最快到达岸边，经过的位移为100 m
答案 BC
解析 两个分运动一个是匀加速直线运动，另一个是匀速直线运动，合速度的方向与合加速度的方向不在同一直线上，合运动为曲线运动，故A 错误，B 正确；当快艇垂直于河岸时，时间最短，垂直于河岸方向上的加速度a ＝0.5 m/s 2，
由d ＝12at 2，得t ＝20 s ，而位移大于100 m ，C 正确，D 错误。
13. (绳联模型)一辆车通过一根跨过定滑轮的轻绳提升一个质量为m 的重物，开始车在滑轮的正下方，绳子的端点离滑轮的距离是H 。
车由静止开始向左做匀加速运动，经过时间t ，绳子与水平方向的夹角为θ，如图所示。
试求：
(1)车向左运动的加速度的大小；
(2)重物m 在t 时刻速度的大小。
答案 (1)2H t 2tan θ (2)2H cos θt tan θ
解析 (1)分析可得：车在时间t 内向左运动的位移
s ＝H tan θ，
由车做匀加速运动，得s＝1
2at
2，
解得a＝2s
t2＝
2H
t2tanθ。
(2)车的速度：v车＝at＝
2H
t tanθ
，
由运动的分解知识可知，车的速度v车沿绳的分速度大小与重物m的速度大小相等，
即v物＝v车cosθ，解得v物＝2H cosθ
t tanθ。