当前位置：文档之家 › 吉林省长春高二下学期期末考试英语试题A-含答案

吉林省长春高二下学期期末考试英语试题A-含答案

  • 格式：doc
  • 大小：213.22 KB
  • 文档页数：16

长春外国语学校第二学期期末考试高二年级英语试卷（人教版）出题人：戴春梅审题人：夏南本试卷分第Ⅰ卷（选择题）和第Ⅱ卷（非选择题）两部分，共 12 页。

考试结束后，将答题卡交回。

注意事项：1. 答题前，考生先将自己的姓名、准考证号填写清楚，将条形码准确粘贴在考生信息条形码粘贴区。

2．选择题必须使用2B铅笔填涂；非选择题必须使用0.5毫米黑色字迹的签字笔书写，字体工整、笔迹清楚。

3．请按照题号顺序在各题目的答题区域内作答，超出答题区域书写的答案无效；在草稿纸、试题卷上答题无效。

4．作图可先使用铅笔画出，确定后必须用黑色字迹的签字笔描黑。

5. 保持卡面清洁，不要折叠，不要弄破、弄皱，不准使用涂改液、修正带、刮纸刀。

第Ⅰ卷第一部分：听力（共两节，满分20分）第一节（共5小题；每小题1分，满分5分）听下面5段对话。

每段对话后有一小题，从题中所给的A,B,C 三个选项选出最佳答案。

每段对话仅读一遍。

1.Where is the man probably?A.On a plane.B. In a restaurant.C. At a hospital.2.Which instrument does the man love now?A.The piano.B. The violin.C. The guitar.3.How many oranges are good?A. 5.B. 15.C. 20.4.What does the man want?A. A DVD.B. A basetball.C. A magaine.5.What time is it now?A.800.B. 807.C. 810.第二节（共15小题；每小题1分，满分15分）听下面5段对话或独白。

每段对话或独白后有几个小题，从题中所给的A,B,C 三个选项中选出最佳答案。

每段对话或独白读两遍。

听第6段材料，回答第6至7题。

6.What’s the man going to do for Christmas?A.Go to Sydney.B. Stay at home.C. Fly to Hawaii.7.Who will the woman stay with during her holidays?A.Her parents.B. Her friends.C. A host family.听第7段材料，回答第8至9题。

8.What did Wendy as the woman to help with?A.Cooing.B. Decorating.C. Washing.9.What is the relationship between the two speaers?A.Teammates.B. Neighbors.C. Classmates.听第8段材料，回答第10至12题。

10.What does the woman want the man to do?A.Type a story.B. Write a story.C. Translate a story.11.What is the man’s mother tongue?A.Norwegian.B. Spanish.C. French.12.What will the man do immediately?A.Tae a test.B. Go to his dormitory.C. Mae a call.听第9段材料，回答第13至16题。

13.Where did the man begin school?A.In India.B. In England.C. In Egypt.14.How did the man support himself when travelling?A.With the money he saved before.B.With the money he got from his parents.C.With the money he earned by writing.15.When did the man start his trip in Asia?A.Two years ago.B. Five years ago.C. Four years ago.16.In what way does the man lie to travel?A.By car.B. By airplane.C. By train.听第10段材料，回答第17至20题。

17.What is the speaer mainly taling about?A.The secret of being successful.B.The secret of staying young.C.The secret of changing professions.18.What does the speaer suggest focusing on?A.Our habit.B. Our diet.C. Our brain.19.What did the housewife mentioned finally become?A. A designer.B. A lawyer.C. An artist.20.How old was the American man when he went to a law school?A.70.B. 71.C. 73.第二部分：阅读理解（共两节，满分 30 分）第一节：（共10小题；每小题2分，满分20分）阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。

AThe Museum The Charles Dicens Museum in Lond on is the world’s most important collection of material relating to the great Victorian novelist and social commentator. The only surviving London home of Dicens (from 1837 until 1839) was opened as a museum in 1925 and is still welcoming visitors from all over the world.On the four floors, visitors can see paintings, rare editions, manuscripts, original furniture and many items relating to the life of one of the most popular and beloved personalities of the Victorian age.Opening Hours The Museum is open from Mondays to Saturdays 1000-1700; Sundays 1100-1700. Last admission is 30 minutes before closing time.Special opening times can be arranged for groups, who may wish to boo a private view.Admission Charges Adults￡5.00; Students￡400; Seniors￡4.00; Children￡3.00;Families￡14.00 (2 adults & up to five children).Group Rates For a group of 10 or more, a special group rate of ￡4.00 each applies. Children will still be admitted for ￡3.00 each.Access We are constantly woring to improve access to the Museum. Our current projects involve the fitting of a wheelchair ramp(活动坡道)for better access and an audio tour for visitors with impaired vision. Our Handling Sessions (亲身体验活动) are also suitable for the visually impaired. The Museum has developed an online virtual tour through the Museum. Clic here to visit all the rooms in the Museum online.Hire the Museum The Museum can be hired for private functions, parties and many other social occasions.Find Us The Museum may be reached by using the following buses 7, 17, 19, 38, 45, 46, 55, 243. And by these underground services Piccadilly Line; Central Line.For a map, please clic here. The British Museum and the Foundling Museum are within waling distance.21. Compared to going there separately, if a family with two adults and four childrengo to the Museum together they will save______.A. ￡22. 00B. ￡14. 00C. ￡11. 00D. ￡8. 0022. According to the passage, which of the following statements is true? ______.A. Anyone cannot hire the Museum for other usesB. Visitors with poor vision cannot enjoy the MuseumC. The Museum is not very far from the British MuseumD. In any case people cannot visit the Museum after 170023. The passage is probably from a ______.A. magaineB. websiteC. guidebooD. newspaperBApril 23 mars the 400th anniversary of William Shaespeare’s death.Organiations in Britain have planned numerous events to honor him.In Stratford-upon-Avon, his birthplace, the tourism organiation has a great number of free events, includi ng performances of Shaespeare’s plays, and a daling firewors display. And the BBC is broadcasting a live show from Stratfore-upon-Avon, celebrating Shaespeare’s widespread influence on the world. In England’s capital, the London Shaespeare Centre is holding a series of public performances, ehibitions and activities. It isn’t just England that honors the anniversary of the death of this etraordinary writer. In Washington, D.C., the Folger Shaespeare Library, which houses the world’s largest collection of doc uments relating to William Shaespeare, is displaying a series of ehibitions.Shaespeare is probably one of the most famous authors and is considered a genius. He wrote around 37 plays and 154 sonnets(十四行诗), and his wor has been translated into over one hundred languages! He penned beautiful metaphors(暗喻), serious dramas and amusing tales.Shaespeare also invented many new terms and phrases. If someone’s behavior suggested they were not being honest and should not be trusted, Shaespeare called their actions suspicious. If someone was being silly and perhaps looing lie a fool, Shaespeare found their actions laughable. And Shaespeare called people who offered their opinions on the quality of something critics. Today, for instance, food critics and film critics give audiences their opinions of foods and films. The familiar phrase “brea the ice” comes from Shaespeare’s play The Taming of the Shrew. “The ice is broen” when a difficult conversation or meeting is calmed by some basic introduction, such as a simple game. More common words coined by Shaespeare include road, gossip, lonely, bump and hurry.Four hundred years after his death, Shaespeare surely lives on，in everyday speech, as the most famous writer of all time!24. The passage is mainly about ______.A. the 400th anniversary of Shaespeare’s deathB. the influence Shaespeare has on written EnglishC. the friends of William ShaespeareD. Shaespeare’s colorful and fruitful life25. Shaespeare is honored in the following ways ecept ______.A. a great number of free events in Stratford-upon-AvonB. a series of activities in the London Shaespeare CentreC. a series of ehibitions in the Folger Shaespeare LibraryD. a live show of Shaespeare in Washington, D.C.26. According to the tet, a simple game to mae a difficult conversation easy is called______.A. an ice-breaerB. a suspicious manC. a criticD. a laughable manCThe Eurotunnel is a tunnel(隧道) which crosses the Channel under the sea, lining France and the U. It is about 50.5 m long and 38m lies under the seabed. There are trains which carry passengers and cars, and others which carry carriages or other heavier vehicles(车辆), as well as goods.The construction of the tunnel started in 1986, with a cost of almost 10 billion pounds. It was opened in 1994 but was not financially successful until 2007, because of the high interest rates (利率) the company had to pay the bans, as well as low earnings from passengers and goods.The Eurotunnel is a very convenient way of traveling between the two countries as the journey is quic (less than one hour), cheap, and comfortable. You can go with your car, motorbie or bie. The tunnel operates every day, round the cloc. At the busiest times there are up to three shuttle departures (班次) per hour. There are facilities(设施)for disabled passengers and for babies at the two terminals (终点站).The Eurotunnel, also commonly nown as the Channel Tunnel, Eurochannel and Eurochunnel is environmentally friendly. It perfects its sources of energy through its use of renewable energy with the result that, by 2008, it had reduced itsgreenhouse gas emissions(排量) by 45%. In addition, 50% of the waste produced is recycled.The future of the Eurotunnel seems promising, although some people who have the fear of enclosed(与外界隔绝的)spaces will never use this type of transportation. There have been some problems with snow storms lie the one in the winter of the 2009 which have made the services stop for a period of time, leaving passengers in the tunnel for more than 15 hours without light, heating, food or drin, inside an unmoving train under the sea. Some of the passengers reacted very badly and decided not to use this means of transport again.27. Why was the Eurotunnel not financially successful at first? ______.A. It was free for passing trainsB. Many people dislied itC. Its operating cost was very highD. It was heavily in debt28. What is Paragraph 3 mainly about? ______.A. The wonderful design of the EurotunnelB. A traveling guide to the EurotunnelC. The advantages of the EurotunnelD. An introduction of the Eurotunnel’s equipment29. We can learn from the tet that the Eurotunnel ______.A. used environmentally friendly energyB. was completely built under the seabedC. was designed for passenger trains onlyD. operated successfully without any accident30.What is the author’s attitude towards the Eurotunnel? ______.A. CautiousB. OptimisticC. NegativeD. Doubtful第二节（共5小题；每小题2分，满分10分）根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。

合集下载

【全国百强校word】吉林省长春市一五0中学2017-2018学年高二下学期期末考试英语试题(有答案)

【全国百强校word】吉林省长春市一五0中学2017-2018学年高二下学期期末考试英语试题(有答案)

第一部分听力（共两节，满分30分）做题时，先将答案标在试卷上。

录音内容结束后，你将有两分钟的时间将试卷上的答案转涂到答题卡上。

第一节（共5小题；每小题1.5分，满分7.5分）听下面5段对话。

每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。

听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

例：How much is the shirt?A. £19.15.B. £9.18.C. £9.15.答案是C。

1. Where does the conversation probably take place?A. In a restaurant.B. In a theatre.C. In a classroom.2. What happened to the man?A. He took an easier exam.B. He probably failed in the exam.C. He forgot all about the exam.3. What did the man do this morning?A. He had a history lesson.B. He had a chemistry lesson.C. He attended a meeting.4. What happened to the woman?A. She lost her handbag.B. She lost her key.C. She lost her car.5. Where will the speaker go?A. To a clothes store.B. To a company.C. To a birthday party.第二节（共15小题；每小题1.5分，满分22.5分）听下面5段对话或独白。

吉林省长春市2025届高三质量监测 (一)英语试题(含答案,无听力原文及音频)

吉林省长春市2025届高三质量监测 (一)英语试题(含答案,无听力原文及音频)

吉林省长春市2025届高三质量监测 (一)英语试题本试卷共12页。

考试结束后，将本试卷和答题卡一并交回。

2024.11注意事项：1.答题前，考生先将自己的姓名、准考证号码填写清楚，将条形码准确粘贴在考生信息条形码粘贴区。

2.选择题必须使用2B 铅笔填涂；非选择题必须使用0.5毫米黑色字迹的签字笔书写，字体工整、笔迹清楚。

3.请按照题号顺序在答题卡各题目的答题区域内作答，超出答题区域书写的答案无效；在草稿纸、试卷上答题无效。

4.作图可先使用铅笔画出，确定后必须用黑色字迹的签字笔描黑。

5.保持卡面清洁，不要折叠，不要弄破、弄皱，不准使用涂改液、修正带、刮纸刀。

第一部分听力 (1~20小题) 在笔试结束后进行。

第二部分阅读(共两节，满分50分)第一节 (共15小题; 每小题2.5分, 满分37.5分)阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

AThe U. S. News Honor Roll of Best Medicare Advantage Plans is based on the Centers fo Medicare and Medicaid Services (CMS) 2024 star ratings for Medicare Advantage plans Individuals choosing a Medicare Advantage plan should consider criteria including the size or the provider network, monthly costs, and coverage for services such as physical rehabilitatior(康复), ambulance use, dental care and vision services. Here is a look at the best CMS rated Medicare Advantage insurance companies.2024 Best Company for Member Experience: HumanaAverage Health Plan Member Experience star rating:3.9 out of 5Service area: Available in 49 states plus Washington,D. C., and Puerto RicoHow is member experience rated?CMS rates Medicare Advantage plans on various aspects of the member experience, such as how easy it is to get needed care and see a specialist, how soon members can get an appointment, members’ subjective ratings of the health plan, and efficiency of care coordination by medical providers. Humana wins this honour once again and improves its rating for 2024, increasing from 3.8 to 3.9 stars. Its member experience star rating also exceeds英语试题第1页 (共12页)the national average member experience rating of 3.5 out of 5.2024 Best Medicare Advantage Company for Drug Plan Ratings: United HealthcareAverage Prescription Drug Plan star rating:4 out of 5Service area: Available in 48 states and Washington, D. C.Highlighted Features:For 2024, United Healthcare received a rating of 4 out of 5 stars for its prescription drug plans. This is better than the national average of 3.8 stars. CMS also rated United Healthcare 4 out of 5 stars overall, making it the second-highest rated insurance company. There's no copay for tier 1 and tier 2 prescriptions when you use United Healthcare's Optum Home Delivery. And for most plans, insulin (胰岛素) costs as little as $35 monthly, accordin g to United Healthcare.Click here to view the individual plans.21.' What should be considered when choosing a Medicare Advantage plan?A. Star rating.B. Service range.C. Payment method.D. Nursing care efficiency.22. What do two insurance companies have in common?A. Having the same star rating.B. Winning the honour for the second time.C. Requiring self-payment for tier l prescriptions.D. Being accessible to residents of Washington, D. C..23. Where can you find the text?A. In a magazine.B. On a website.C. In a newspaper.D. In a brochure.BPeople who visit Yao Huifen's workshop often mistake her embroidery(刺绣) for paintings or photographs. It is easy to see why. Yao's works look so realistic, like oil paintings, Chinese ink wash paintings or photographs. Many of her works have been bought by domestic and foreign museums.The inheritor of embroidery in Suzhou, Jiangsu province, was born into a family with a long history in the art. Her grandparents and parents worked in the industry. She started to learn from her grandmother and mother when she was little. Influenced by her father, she always loved to read books about art and aesthetics(美学). She attended lectures on philosophy and art innovation when she was growing up. “You might not use the knowledge in the beginning, but what you read and what you experienced will eventually reflect in your works,” says Yao.For more than 10 years, she learned embroidery from masters of Suzhou embroidery and(长春一模) 英语试题第2页 (共12页)gradually became famous for her own skill. Elected as a promoter and ambassador of Suzhou embroidery, she has been to many countries for cultural communication, including the United States, France and Italy.Like many cultural heritage items, Suzhou embroidery faces the problem of finding young people to pass the craft on to. The huge input of time and energy required to learn embroidery, Yao admits, has scared away many young people. However, she takes it as her responsibility to attract and train enough inheritors. She cooperated with colleges in Suzhou to open an embroidery course and teach the students for free. Yao has been teaching embroiderylovers at her workshop for many years. Some of her students have set up their own workshops and started to tea ch others themselves.“Traditional handicrafts need to conform (顺应) to the current aesthetics and cannot linger on the standards of old times. Embroidery techniques should also be improved continuously.” Yao suggests that embroiderers should open up new horizons instead of working in workshops all day long. She visits art exhibitions and museums at every opportunity when she goes to big cities.24. What is the author's purpose in writing the first paragraph?A. To compare embroidery with photos.B. To list some mistaken views of embroidery.C. To highlight Yao Huifen's extraordinary skill.D. To clarify the differences between embroidery and paintings.25. According to Yao, why are young people unwilling to learn embroidery?A. They find it effort-consuming.B. They lack interest in it.C. They consider it less profitable.D. They have a different taste for beauty.26. Which of the following words can best describe Yao Huifen?A. Persistent and modest.B. Devoted and disciplined.C. Determined and ambitious.D. Responsible and selfless.27. What can we infer from the text?A. Yao Huifen prefers working in big cities.B. Embroidery is gradually regaining its fame.C. Yao Huifen has a talent in teaching embroidery.D. Yao Huifen is struggling to inherit Suzhou embroidery.C“Turn off, tune out and drop in.” That's the message to customers at a Dutch digital detox(戒瘾) cafe who are paying for the privilege of leaving their phones at the door. The Offline Club, which began life in Amsterdam, offers an oasis(乐土) of calm and pause from the constant digital busyness of life lived through the black glass of a smartphone. It creates英语试题第3页(共12页)moments of quiet reflection, and encourages conversations with strangers instead of endless keyboard arguments hammered out 280 characters at a time.With board games, a piano and books on hand, the idea is to swap recharging your device for refilling your soul, even for just a few hours. Aided by word spreading on social media, the club has already branched out to mul tiple cities across the Netherlands, and is now ready for an international launch.“People love it: they tell us this is exactly what they' ve been waiting for; they can't believe it didn't exist alrea dy, "says co-founder Ilya Kneppelhout. “A girl called Belinda who struggled with stress and anxiety told us she hadn't felt so at peace with herself in a year and a half.”Customers switch between time to themselves and time to connect. “People don't just pay to get rid of their ph ones — they’ re also paying to meet others,” says Kneppelhout. “We live in quite an isolated world where we' re more connected online, but in the physical world, it's hard to meet people.”He's already had a group of digital downtime followers in the UK, where Georgina Sturmer, who has worked with clients experiencing over-dependence on phones, points out another benefit of a switched-off society. “We are constantly at risk of having every word or image captured and shared,” she says. “This sense of being endlessly photographed is something that has come with these devices being in our lives so much. Wouldn't it be great to feel safe knowing it doesn't matter if we' re having a bad hair day, or don't really like our outfit?”28. What can we know about the Dutch digital detox cafe?A. It is the first cafe in Amsterdam.B. Interaction among people is advocated.C. Only black smartphones are allowed there.D. Customers have to type 280 characters nonstop.29. How did the cafe become more and more popular?A. By media's advertising.B. By netizens' commenting online.C. By employees' handing out leaflets.D. By customers' word-of-mouth promoting.30. Why is Belinda mentioned in the third paragraph?A. To show the effect of the cafe.B. To explain the cause of her anxiety.C. To stress the seriousness of her situation.D. To introduce the problem of modern people.31. What is Georgina Sturmer's attitude towards the cafe?A. Ambiguous.B. Concerned.C. Supportive.D. Doubtful.(长春一模) 英语试题第4页(共12页)Do you ever find yourself repeating a specific word in your head over and over until the word suddenly make s no sense to you and you wonder why it's a word at all? This is just one of the many odd things our brains do to us, and it's a pretty funny experience when it happens.This phenomenon is known as semantic satiation(语义饱和) and it causes us to perceive a real word as meani ngless sounds. Sometimes that loss of meaning can be a pain, sometimes it can be useful, and sometimes, it can ev en be unforgettably beautiful.Semantic satiation occurs when a word is repeated over and over again until the word begins to lose its meani ng to the listener. The term was first coined in 1962, but research surrounding the phenomenon dates from the earl y 20th century. There are multiple theories as to why semantic satiation occurs. One is that the repeated use of a ne ural pathway associated with a word impacts response times, leading to the loss of meaning. Another theory is that tiredness causes the connection between word and meaning to get disordered.More recently, researchers have used neural networking simulations (模拟) to try to identify why the phenom enon happens and another set of researchers have found that semantic satiation delays facial expression processing . In other words, there isn't an agreement as to why semantic satiation happens.Studies looking at semantic satiation have typically involved the repetition of a word up to30 times, withsemantic satiation, in some cases, appearing after seven to nine repetitions. Some words used during these studies have been as short as four letters, but others have been much longer.Sometimes, losing the meaning of a word can actually be helpful. Judy Ravin of Accents International uses semantic satiation to help English language learners focus more on how your muscles need to move in order to ma ke the sounds required, rather than the meaning of a particular word. “A word in itself doesn't actually have meani ng. A word is a symbol for something, so, when we can move away from the meaning and just think about sound production, the physiology, it's helpful.”32. What can we learn from semantic satiation?A. It has its origin from money.B. It is most likely to be painful.C. It arises as a word is repeated enough times.D. It's one of the few tricks our brain plays on us.33. What does the word“coined” in paragraph 3 probably mean?A. Created.B. Saved.C. Earned.D. Collected.34. How does Judy Ravin help English learners?A. By strengthening muscles physically.B. By emphasizing learning words basically.C. By combining the meaning and sound organically.D. By concentrating on pronouncing words physiologically.英语试题第5页(共12页)35. What does the text mainly talk about?A. Who are suffering from semantic satiation.B. What kind of semantic satiation is beneficial.C. Why semantic satiation makes a word meaningless.D. How semantic satiation influences our facial expression.第二节 (共5小题; 每小题2.5分, 满分12.5分)阅读下面短文，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。

吉林省长春市新解放学校2022-2023学年高二下学期4月月考试题 英语

吉林省长春市新解放学校2022-2023学年高二下学期4月月考试题 英语

长春市新解放学校2022-2023学年下学期第一次月考高二英语第一部分听力(共两节;满分30分)第一节(共5小题;每小题1.5分，满分7.5分)听下面5段对话，每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项。

听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

1．Where are the speakers probably?A．On a train. B．In a taxi. C．At a railway station. 2．What are the speakers talking about?A．A neighbor. B．A phone. C．A movie.3．What will the woman do today?A．Buy a book. B．Attend a lecture. C．Teach English. 4．What does the man order?A．A pie. B．A cake. C．An ice cream. 5．What docs the woman usually do in the evening?A．She watches TV. B．She goes for a run. C．She does yoga.第二节（共15小题；每题1.5分，满分22.5分）听下面5段对话或独白。

每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项。

听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。

每段对话或独白读两遍。

听第6段材料，回答第6、7题。

6．What’s the probable relationship b etween the speakers?A．Fellow travelers.B．Interviewer and interviewee.C．Friends.7．What’s the woman’s advantage?A．She is calm under pressure.B．She can fly many kinds of airplanes.C．She is good-looking.听第7段材料，回答第8至9题。

吉林省长春市第二十中学2024_2025学年高二物理下学期期末考试试题

吉林省长春市第二十中学2024_2025学年高二物理下学期期末考试试题

吉林省长春市其次十中学2024-2025学年高二物理下学期期末考试试题（90分钟100分）一、单选题（每题4分共32分）1．关于分子的下列说法，正确的是（ ）A ．我们将充溢气的气球压扁时须要用力，这是因为分子间存在斥力的原因B ．某个气体分子在高温状态时的速率不行能与低温状态时相等C ．两分子从相距无穷远到无穷近的过程中，分子间的合力先增大后减小再增大D ．分子甲固定不动，分子乙由较远处渐渐向甲靠近直到平衡位置，在这一过程中，分子力先对乙做正功，再对乙做负功2．物理学的基本原理在生产生活中有着广泛应用．下面列举的四种器件中，在工作时利用了电磁感应现象的是（ ）A ．回旋加速器B ．变压器C ．质谱仪D ．速度选择器3．某正弦式交变电流的i －t 图象如图所示，则该电流的( )A ．频率0.02 f Hz ＝B ．有效值10I A ＝C ．峰值102m I A ＝D ．瞬时值表达式()20 100i sin t A π＝4．如图所示，两平行金属导轨水平放置，导轨间接有电阻R ，置于匀强磁场中，导轨上垂直搁置两根金属棒ab 、cd ．当用外力F 拉动ab 棒向右运动的过程中，cd 棒将会（ ）A ．保持静止B ．向左运动C ．向右运动D ．向上跳起5．容积为20 L 的钢瓶充溢氧气后，压强为150 atm ，打开钢瓶的阀门让氧气同时分装到容积为5 L 的小瓶中，若小瓶原来是真空的，小瓶中充气后压强为10 atm ，分装过程中无漏气，且温度不变，那么最多能分装( )A ．4瓶B ．50瓶C ．56瓶 D.60瓶6．粗细匀称的电阻丝围成图所示的线框，置于正方形有界匀强磁场中，磁感应强度为B ，方向垂直线框平面对里，图中ab =bc =2cd =2de =2ef =2fa =2L .现使线框以同样大小的速度v 匀速沿四个不同方向平动进入磁场，并且速度方向始终与线框先进入磁场的那条边垂直，则在通过如图所示位置时，下列说法中正确的是( )A ．a 、b 两点电势差图①中最大B ．a 、b 两点间的电势差图②中最大C ．回路电流图③中最大D ．回路电流图④中最小7．如图所示，面积为20.2m 的100匝线圈处在匀强磁场，磁场方向垂直于线圈平面。