杨浦区2018学年度第一学期高三年级学业质量调研ok
上海市杨浦区2017-2018学年度第一学期高三英语模拟质量调研 2017. 12
杨浦区2017-2018学年度第一学期高三模拟质量调研2017. 12满分140分。
考试时间120分钟。
第I卷（共100分）II. Grammar and VocabularySection ADirections: After reading the passage below, fill in the blanks to make the passages coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.It’s interesting when you think about how Japan is a nation (21) ______ appreciates the virtues of silence and good manners, and yet when it comes to eating noodles, Japanese people can be (22) ______ (loud) in the world.According to lifestyle website grapee.jp, slurping (发出"哧溜"声) when eating noodles (23) ______ (encourage) in Japanese culture. It’s believed that taking air into your mouth (24) ______ enhance the flavor of the noodles, and that it helps cool down the noodles. It’s also considered to be a way to show appreciation for the dish. Sometimes, just making the noise alone seems to make the noodles more enjoyable.It wasn’t until a new expression –“noodle harassment（骚扰）”-- came out last year on social media (25) ______ Japanese people started to realize that the slurping noise is making some foreign visitors uncomfortable.(26) ______ a response, Japanese instant noodle maker Nissin introduced a so-called noise-canceling fork last month. The fork, which looks like an electric toothbrush, is connected wirelessly to a smart phone. When the person using the fork starts to slurp, the fork sends a signal to the perso n’s phone, (27) ______ (make) it play a sound to mask the slurping noise.But is it really necessary? Dining traditions do vary. (28) ______ is considered to be proper table manners in one country is likely to be seen as rude in another. In India, people eat with their hands (29) ______ they think in this way they build a connection with the food. However, people who are used to eating with forks might find it uncomfortable to get their hands (30) ______ (cover) in oil and bits of food. But this eating method is part of Indian's culture, just like Japan's slurping is part of its own.“So, if your are eating noodles, whether that’s ramen, uudon, or soba, please slurp,” wrote reporter Brian Ashcraft on blog Kotaku. “If anyone gets annoyed while you are doing that, pay them no mind because they're missing the point entirely.”Section BDirections: Fill in each blank with a proper word chosen from the box. Each word can only be used once. Note that theresealing up critical wounds in the skin or the organs, without the need for staples or sutures（钉合或缝合）.It’s called MeTro. It was developed by researchers from both Harvard Medical School and the University of Sydney, led by Nasim Annabi, an assistant professor of chemical __31__. The glue is made from a modified（改良的）human protein that responds to UV light, allowing the application and drying of the gel-like substance in just a minute.According to the international team of researchers behind the glue, it could quite literally be a lifesaver, sealing up wounds in 60 seconds without stopping the natural __32__ and relaxing of the organ or the skin it’s applied to. Wounds __33__ with MeTro can heal up in half the time compared with stitches or staples, the researchers claim, and if surgery is required then MeTro can simplify that __34__ too. It's also one of several ways researchers are exploring to engineer our body's own natural substances to help repair it when needed.The __35__ applications are powerful – from treating serious __36__ wounds at emergency sites such as following car accidents and in war zones, as well as improving hospital surgeries.MeTro is simple to apply, can be easily s tored, and works closely with natural __37__ to heal a wound. What’s more, it degrades without leaving any kind of poisonous leftovers in the body.For now the trials are __38__ to animal models. But human trials are in the works, and the results to date are incredibly __39__. If the MeTro can be further developed into a __40__ product, it could become an essential part of a first responder’s toolkit.III. Reading ComprehensionSection ACompetition is good for businesses. In the world of navigation（导航）systems, however, competition is also a necessity --- it may not be wise to rely on foreign systems for positioning and tracking services. Now, ___41___ remarkable accuracy and reliability, China’s BeiDou system has made its presence felt.The BeiDou project was set up in 1994. The first BeiDou satellite was not launched until 2000. Now, ___42___, there are already more than 20 BeiDou satellites in orbit (轨道) . They form a ___43___ network that provides positioning, navigation and timing services for China and several other Asian countries.This “home-grown" system is now ___44___ a major upgrade. Earlier this month, two BeiDou-3 satellites, the first of China’s most powerful ___45___of navigation satellites, were launched into space. The launch marks the b eginning of the global ___46___ of the BeiDou navigation system. Over the next three years, China plans to send up 30 more BeiDou-3 satellites; The expanded navigation system will ___47___ create a network that is able to support military and civilian applications around the world.Scientists involved in the project said the new system would give civilian users an accuracy of 2.5 meters to five meters, overtaking that of the ___48___ positioning technologies. BeiDou’s chief designer said the new satellites would be able to __49___ which lane a car is using on a motorway and __50___ the swing of a building in high winds. It will also be able to guide fire trucks to the nearest water hydrant (消防栓).The Chinese military, meanwhile, will be able to use coded signals for millimeter（毫米）___51___ .China is only the third country in the world to develop a navigation system on its own, after the United States (GPS) and Russia (GLONASS). Developing BeiDou is a necessity. The system __52___ national security by ending a reliance on foreign systems. Moreover, it enhances China’s international reputation for technological ___53___.For most of us, the benefits of the new satellite system will be felt in a couple of years when more phones are ___54___ with BeiDou chips (芯片). Many smartphones today still use GPS and GLONASS. That’ll soon change with the development of BeiDou. One product manager ___55___ most smartphones to be able to receive BeiDou signals. He says: “In three years’ time, people may still say ‘I’m using GPS’, but in fact, their phone is tune in to BeiDou. ”41. A. dominating B. boasting C. shifting D. inputting42. A. however B. afterwards C. moreover D. therefore43. A. continental B. local C. domestic D. regional44. A. enduring B. encountering C. undergoing D. processing45. A. generation B. information C. examination D. revolution46. A. extension B. expansion C. interaction D. invasion47. A. objectively B. eventually C. sufficiently D. essentially48. A. existing B. progressing C. upcoming D. everlasting49. A. explore B. investigate C. spot D. remind50. A. detect B. prevent C. protect D. adjust51. A. privacy B. accuracy C. fluency D. currency52. A. convinces B. insures C. highlights D. strengthens53. A. innovation B. consumption C. emission D. exhibition54. A. decorated B. furnished C. equipped D. connected55. A. respects B. instructs C. inspects D. expectsSection B(A)A Swedish power plant is taking reuse and recycle to the next level by burning unusable clothing instead of coal, Bloomberg reports.Retail giant Hennes & Mauritz, more commonly known as H&M, is helping the utility transition away from coal through its moldy (发霉的) or otherwise unsalable clothing.The multi-fuel power and heating station in Västerås, central Sweden, is planning to be completely fossil-fuel free by 2020. It’s the largest station of its kind and Sweden claims it’s one of Europe’s cleanest. To kick its coal habit, the station is turning instead to other burnable materials including recycled wood, rubbish and yes, clothes.“Our goal is to use only renewable and recycled fuels,” Jens Neren, head of fuel supplies at the utilit y company which owns and operates the Västerås plant, told Bloomberg.Johanna Dahl, head of communications for H&M in Sweden, told Bloomberg that the company allows only the burning of clothes which are no longer safe to use.“It is our legal obligation t o make sure that clothes that contain mold or do not meet the requirements of our strict restriction on chemicals are destroyed,” she said.The Västerås plant has burned around 15 tons of old H&M clothes so far this year, compared with about 400,000 tons of rubbish, Neren told Bloomberg.Sweden has one of the world’s greener energy generating systems, and has invested in bioenergy, solar power and electric buses. In 2015, the Scandinavian country announced an ambitious aim to become one of the first nations in the world to end its dependence on fossil fuels. According to the Swedish government, the country has already heavily reduced its dependence on oil, which accounted for 75% of the energy supply in 1970, and now makes up a 20% share.56. Which of the following can serve as fuel in the Västerås plant?A. Fashionable coats in H&M chain store.B. Old TV sets deserted as rubbish.C. Wooden furniture in second-hand shop.D. H&M clothes unsuitable for sale.57. The underlined word in the last paragraph “generating” is closest in meaning to ______.A. eliminatingB. adjustingC. producingD. circulating58.What can we learn from the passage?A. The Swedish government discourages the development of bioenergy.B. Clothes only take up a small proportion of the burning material.C. Sweden’s fossil-fuel free plan is almost accomplished by now.D. Sweden has an ambition to be the cleanest country in the world.59. What is the main idea of the passage?A. A Swedish power plant is burning unusable H&M clothes for fuel.B. The Swedish government aims high and is taking effective action.C. H&M is looking for a new way to strengthen its position in fashion.D. Coal and oil are no longer regarded as the primary fuels in Sweden.(B)RAINFOREST ADVENTURE TIPS(1) Find out about the trail and surroundings, be sure that you have enough time to complete the entire route before darkness falls. Do not stray off the path to chase after animals.(2) Use good judgment regarding the fitness level required for the trek（徒步跋涉）, and know your physical limits.(3) Always inform the park officials or let someone know of your plans and destination for the day, especially if going alone.(4) Take plenty of water and pack a few easy to eat snacks to keep energy level up. Unless trekking with a local guide, it is not advisable to eat jungle fruit or drink from any water source.(5) Be as quiet as possible to avoid scaring any wildlife. Getting an early start during the dawn provides the best chance to sight animals seeking food and the warmth of the early morning sun.(6) Wear thin, loose, preferably cotton clothing to remain comfortable.(7). Cover arms and legs with long trousers and long-sleeved shirts to ward off mosquitoes and to provide protectionagainst thorny plants.(8) Be prepared for sudden rain showers by carrying a poncho that wraps over both body and your carrying pack to keep everything dry.(9) Choose footwear with proper ankle support and good traction.(10) A wide brimmed that helps to shade a trekker from the heat of the tropical60. Before an adventure, a trekker should ______.A. tell the park officials his destination and time scheduleB. pack up some jungle fruit juice and pre-cooked mealsC. consult a local guide about the most adventurous routeD. have his fitness level assessed at the tourist center61. Which of the following is NOT suitable for a rainforest trekking?A. Long-sleeved cotton shirts.B. Tight sports shorts.C. Hiking boots.D. A wide brimmed hat.62. If a trekker starts out at dawn, he may ______.A. escape being caught in the rainB. sight scared wildlifeC. enjoy the heat of the tropical sunD. see animals seeking food(C)The largest genetic study of mosquitoes has found their ability to resist insecticides is evolving rapidly and spreading across Africa, putting millions of people at higher risk of contracting malaria（疟疾）.British scientists who led the work said mosquitoes' growing resistance to control tools such as insecticide-treated bed nets and insecticide spraying, which have helped cut malaria cases since 2000, now threatens “to disturb malaria control” in Africa.“Our study highlights the severe challenges facing public efforts to control mosquitoes and to manage and limit insecticide resistance,” said Martin Donnelly of the Liverpool School of Tropical Medicine, who worked on the study with a team from Britain’s Wellcome Trust Sanger Institute.Latest World Health Organization (WHO) data show that 216 million people were infected last year with the malaria parasite (寄生虫), which is transmitted by blood-sucking Anopheles mosquitoes.The disease killed 445,000 people in 2016, and the majority of them were children in sub-Saharan Africa.To understand how mosquitoes are evolving, the researchers sequenced the DNA of 765 wild Anopheles mosquitoes taken from 15 locations across eight African countries. Their work, published in the journal Nature on Wednesday, created the largest data resource on natural genetic variation for any species of insect.Analyzing the data, the scientists found that the Anopheles gambiae mosquitoes（冈比亚疟蚊）were extremely genetically diverse （多样化的） compared with most other animal species. This high genetic diversity enables rapid evolution, they said, and helps to explain how mosquitoes develop insecticide resistance so quickly.The data also showed the rapid evolution of insecticide resistance appeared to be due to many previously unknown genetic variants（变体）within certain genes. The scientists said these genetic variants for insecticide resistance were not only emerging independently in different parts of Africa, but were also being spread across the continent by mosquito migration.Michael Chew, an expert at Britain’s Wel lcome Trust global health charity which helped fund the research, said the finds underlined the importance of pushing scientific research ahead to control malaria.Global efforts to control malaria through effective vaccine, insecticides and the best drug combinations require urgent, united action by scientists, drug companies, governments and the WHO.63. Which of the following is scientists’ headache?A. The number of mosquitoes in Africa is growing rapidly.B. Some genetic variants of mosquitoes are still unknown.C. The existing insecticides aren’t as effective as they used to be.D. Millions of African people have resistance to medicines for malaria.64. Malaria cases can be cut by ______.A. threatening drug companiesB. spraying insecticidesC. limiting blood donationD. transmitting data65. What CANNOT be concluded from the passage?A. Children are more likely to be bit by mosquitoes.B. Many previously unknown variants are found in the study.C. The mosquito migration contributes to the spread of variants.D. Anopheles mosquitoes have great genetic diversity.66. Which is FALSE about the genetic study of mosquitoes?A. It created the largest data on natural genetic variation for any insect species.B. It found the possible causes for the rapid evolution of insecticide resistance.C. It discovered where the genetic variants emerged and how they were spread.D. It highlighted the public efforts and appealed to limit the use of insecticides.Section CDirections: Read the following passage. Fill in each blank with a proper sentence given in the box. Each sentence can be used only once. Note that there are two more sentences than you need.Imagine you're standing in line to buy an afterschool snack at a store. You step up to the counter and the cashier scans your food. Next, you have to pay. But instead of scanning a QR code with your smartphone, you just hold out your hand so the cashier can scan your fingerprint. Or, a camera scans your face, your eyes or even your ear.__________67__________ As technology companies move away from traditional password, biometric（生物识别）security, which includes fingerprint, face and voice ID, is becoming increasingly popular.In 2013, Apple introduced the iPhone 5s, one of the first smartphones with a fingerprint scanner. Since then, using one’s fingerprint to unlock a phone and make mobile payments has become commonplace, bringing convenience to our lives. And since last year, Samsung has featured eye-scanning technology in its top smartphones, while Apple’s new iPhone X can even scan a user’s face.__________68__________ “Biometrics, ideally, are good,” John Michener, a biometric expert, told tech website Inverse. “In practice, not so much.”When introducing the new iP hone’s Face ID feature at Apple’s Keynote Event in September, Phil Schiller, Apple’s senior vice president, said, “__________69__________”But it’s already been done. In a video posted on community website Reddit on Nov 3, two brothers showed how they wer e each able to unlock the same iPhone X using their own face, Quartz reported. And they aren’t even twins.“We may expect too much from biometrics,” Anil Jain, a computer science professor at Michigan State University, told CBS news. “No security systems are perfect.”Earlier this year, Jain found a way to trick biometric security. Using a printed copy of a thumbprint, she was able to unlock a dead person's smartphone for police.“It’s good to see biometrics being used more,” Jain told CBS News, “becaus e it adds another factor for security. __________70__________”IV. Summary WritingDirections: Read the following passage. Summarize the main idea and the main point(s) of the passage in no more than 60 words. Use your own words as far as possible.It’s a common sight to see food delivery workers riding electric bikes through big cities in China. Most of them seem to be in a hurry, as they run red lights to deliver their meals in time. However, such reckless（鲁莽的）behavior often causes serious problems.In the first half of this year, food delivery drivers had 76 traffic accidents in Shanghai alone, according to the Shanghai Public Security Bureau. This means that on average, there is a food delivery worker that gets hurt or even dies on the road in Shanghai every 2.5 days.Other cities also share similar problems. In Nanjing, three people died and 2,473 were injured in road accidents related to food delivery workers in the same period, according to the Ministry of Public Security.The rise of reckless behavior among food delivery workers is closely related to the growing demand for their service, reported People’s Daily. About 150 million people in China use food delivery services, according to China Radio International (CRI). Such a big market has led to a large demand for food delivery workers, with some companies offering high salaries to attract new workers.However, food delivery workers are often under high pressure from their employers. They face company fines of 20 yuan for delivering food late and upwards of 200 yuan for receiving complaints, reported CRI. Moreover, the more orders they take, the more commission（佣金）they can earn, leading to some workers checking their mobile phones for new orders while they're riding their bikes.While most c ompanies have measures requiring delivery workers to follow traffic rules, “there remains a problem of whether these requirements and rules for delivery workers are truly entering their ears, brains and hearts,” Wang Liang, deputy head of the Traffic Police Security Bureau, told news website The Paper.To solve the problem, some cities have taken action. Shanghai has asked companies to train their workers on traffic rules and safety. Now in Shenzhen, if a delivery worker gets caught breaking traffic rules more than twice, he or she will be banned from driving food delivery vehicles for a whole year.第II卷（共40分）I. Translation71. 这个比赛旨在鼓励年轻人继承中国文化的传统。
2018届上海市杨浦区高三学业质量调研一模历史试题及答案 精品推荐
上海市杨浦区2018届高三学业质量调研（一模）历史试题考生注意：1．考试时间120分钟，试卷满分150分。
一、选择题（共75分）以下每小题2分，共60分。
每题只有一个正确选项。
1．伯里克利在演讲中说：“我们的制度之所以被称为民主政治，因为政权掌握在____手中。
解决私人争执的时候，每个人在法律上都是平等的。
”符合空格中的正确一项是A．男性B．公民C．陪审法庭D．公民大会2．春秋战国时期诸子百家的世界观、人生观，为塑造中华民族的性格奠定了基础。
下列排列组合与儒家、道家、法家所崇尚的理想人格相对应的是A．英雄、隐士、君子B．英雄、隐士、君子C．君子、英雄、隐士D．君子、隐士、英雄3．复旦大学校训“博学而笃志，切问而近思”，出自中国某典籍，全句是“博学而笃志，切问而近思，仁在其中矣。
”按语义判断，复旦校训当出自A．《尚书》B．《墨经》C．《老予》D．《论语》5．“开始于沙漠中的一个宗教，在短短的一个世纪内，已发展成为横跨欧亚大陆的强大帝国，到750年，他统治了从比利牛斯山到信德，从摩洛哥到中国边境的广大地区。
”斯塔夫里阿诺斯《全球通史》里所说的这一帝国和宗教是A．罗马基督教B．阿拉伯伊斯兰教C．拜占庭东正教D．奥斯曼伊斯兰教4．西周时“一人跖（踏）来而耕，不过十亩”；战国时“一夫挟五口，治四百亩”。
引起这种变化的最直接原因是A．公田变为私田B．铁器牛耕的推广C．国家走向统一D．封建制度的确立6．普希金赞美俄国一位伟大的人物时说：“他用独断专行的手，勇敢地撒播着文明。
”其中的“他”是A．威廉·奥伦治B．彼得一世C．亚历山大二世D．尼古拉二世7．孟德斯鸠说：“中国是一个专制的国家，它的原则是恐怖的。
在最初的那些朝代，政府的专制精神也许稍微差些：但是今天的情况却正好相反。
”下列最能佐证引文中“稍许差些”的是A．唐朝完善三省六部制B．元朝实行行省制度C．明朝废除丞相制度D．清朝设置军机处8．恩格斯称法国启蒙思想家是“非常革命”的。
【上海市杨浦区】2018届高三上学期期中质量调研语文试卷
上海市杨浦区2018届高三上学期期中质量调研语文试卷一、积累应用（10分）1．按要求填空：（6分）（1）不应有恨，_______________？（苏轼《_______________·明月几时有》）（2）荀子在《劝学》中提倡学习贵在坚持，即使天资再好，也不能一蹴而就：_______________，_______________。
（3）李白在《梦游天姥吟留别》中描绘天姥山夜间猛兽震憾人心的吼声：_______________，_______________。
2．按要求选择。
（4分）（1）下列各项中没有歧义的一句是（）A．每周一的早晨，我们都能看见校门一边站着一位同学，迎接师生们入校。
B．她是传奇人物，她是脱口秀女王，她的故事讲不完。
C．暑假期间，两个师范大学的女生自愿前往贵族苗寨担任指导教师。
D．局里刚到一批保密材料，为保证材料安全，他只能在机要室阅读。
（2）秋日午后，满园桂香，你信步其中，哪句诗描绘此时景物最合适（）A．绿玉枝头一粟黄，碧纱帐里梦魂香，晓风和月步新凉。
B．桂子月中落，天香云外飘，霜薄花更发，冰轻叶未凋。
C．暗淡轻黄体性柔，情疏迹远只香留。
D．南中有八树，繁华无四时，不识风霜苦，安知零落期。
二、阅读（70分）（一）阅读下文，完成3~8题。
（17分）上帝、数据和故事（有删改）（1）关于“大数据”的名言：“除了上帝．．．．，任何人都必须用数据来说话。
”（2）在这句话中，大数据俨然成了一个新的“上帝”，人容易在如此理解里被大数据所管控，不时地失去自我主体位置，最终导致认知和改造世界的迷惘与失误。
（3）通俗理解，“大数据”即是“大量”的数据。
它解决了以往小部分数据时，必须由局部去推测整体的困难。
如在大海航行时，航行者发现冰山一角，以往必须借助某种“算法”，去推测冰山的大小；在冰山“大数据”可得到时，整个冰山便容易把握，航行者不需要任何“算法”去推测。
而且，如果数据可以“大”到无所不包的“全量”时，人类就能够大大地提高趋利避害的准确性。
最新 上海市杨浦区2018届高三上学期期末学科测试(历史
上海市杨浦区2018届高三上学期学科测试历史试卷本试卷分为选择题和非选择题两部分，全卷共10页。
2018年1月考生注意:1．答卷前，考生务必分别在答题卡和答题纸上用钢笔清楚填写姓名和准考证号，并用铅笔在答题卡上正确涂写准考证号。
交卷时需交答题卡和答题纸，试卷不用上交。
2．选择题（第1-30题）由机器阅卷，答案必须全部涂写在答题卡上。
注意：答题卡与试卷在试题编号和选项上是一一对应的。
考生应将代表该题答案的小方格涂黑，不能错位。
答案需要更改时，必须将原选择用橡皮擦清，重新选择。
答案不能写在试卷上，写在试卷上一律不给分。
（注意：答题卡的准考证号码是九位，如“×××××××××”，涂号码时按九位涂）3．考试时间120分钟，试卷满分150分。
一、选择题（共60分，每小题2分。
每题只有一个正确选项。
）1．“我们不模仿我们的邻人，但我们是他们的榜样。
我们的政体确可以称为民主政体，因为行政权不是掌握在少数人手里，而是握在多数人手中。
……任何人都可以有益于国家。
”——伯里克利。
你认为古代雅典民主政治高度发展的主要因素有①文化的繁荣活跃②商贸的频繁③相对封闭的地理环境④平民与贵族的斗争A．①②③④ B．①② C．①②③ D．①②④2．20世纪初，历史学家王国维在证明《史记·殷本纪》时总结自己的研究方法时说：“吾辈生于今日，幸遇纸上之材料外，更得地下之新材料。
有此种材料，我辈固得据以补正纸上之材料，亦得证明古书之某部分全为实录。
……此二重证据法，唯在今日始得为之。
”他所庆幸得到的地下“新材料”应该是（A）（B）（C）（D）3．诸子百家的政治主张在我国封建社会作为统治思想先后体现的有①道家“无为” ②儒家的“仁政” ③墨家的“兼爱” ④法家的“法治”A．①②③ B．①②④ C．④①② D．①②③④4．达·芬奇的著名的绘画作品《蒙娜丽莎》自诞生以来，以她无与伦比的美丽，令无数人为之倾倒。
上海市杨浦区2018届高三上学期期末质量调研英语试卷(含答案)
杨浦区2017-2018学年度第一学期高三模拟质量调研英语学科试卷2017. 12 本试卷分为第I卷（第1-11页）和第II卷（第12页）两部分。
全卷共12页。
满分140分。
考试时间120分钟。
第I卷（共100分）I. Listening ComprehensionSection ADirections: In Section A, you will hear ten short conversations between two speakers. At the end of each conversation, a question will be asked about what was said. The conversations and the questions will be spoken only once. After you hear a conversation and the question about it, read the four possible answers on your paper, and decide which one is the best answer to the question you have heard.1. A. In a professor's office. B. In a second-hand book shop.C. In a library.D. In a hospital.2. A. 10 yuan. B. 20 yuan.C. 30 yuan.D. 50 yuan.3. A. House agent and customer. B. Shop assistant and customer.C. Car mechanic and car owner.D. Employer and employee.4. A. The man doesn't believe what the woman says.B. The weather report spoils the man's good mood.C. They will cancel the hiking due to the bad weather.D. The man thinks it unnecessary to give up the adventure.5. A. She always talks bad about her colleagues.B. She has a good reputation among her colleagues.C. She is good at handling complicated relationships.D. She has good relations with her colleagues and boss.6. A. Harmony in a community. B. Safety in the neighborhood.C. Preparation for Christmas.D. Ways to save electricity.7. A. Watching advertisements may help ease eyestrain（眼疲劳）.B. It's a great chance to break the habit of watching TV.C. The advertisements are long enough for her to have a nap.D. Focusing eyes on the screen for a long time is harmful to eyes.8. A. The man decides to go home by rail.B. Most people travel by car during the festival.C. Most people arrive beyond the scheduled time.D. The man will have a sound sleep on the bus.9. A. He is not a bit overweight.B. He likes his fitness instructor.C. She has set too many rules for him.D. She should talk with his personal trainer.10. A. Greeks are not allowed to get married before 18.B. Greek kids are not as independent as American kids.C. American parents don’t pay for children's wedding.D. Greek parents will take care of children until they are 18.Section BDirections: In Section B, you will hear several longer conversation(s) and short passage(s), and you will be asked several questions on each of the conversation(s) and the passage(s). The conversation(s) and passage(s) will be read twice, but the questions will be spoken only once. When you hear a question, read the four possible answers on your paper and decide which one would be the best answer to the question you have heard.Questions 11 through 13 are based on the following passage.11. A. The burn is 20 millimeters across.B. The burn is small but very painful.C. The burn takes away the victim's feeling.D. The burn is small but the skin is damaged.12. A. Use a clean plastic bag to keep warm.B. Bind up the burn with bandage or cloth.C. Treat the burned area with cold running water.D. Flush（冲洗）the burn with ice water for several minutes.13. A. To avoid infection. B. To ease pain.C. To speed recovery.D. To reduce stickiness.Questions 14 through 16 are based on the following passage.14. A. A cell phone. B. A leather wallet.C. A mini camera.D. An alarm clock.15. A. The wallet will sound an alarm.B. It will track the thief with GPS system.C. It will contact the bank to block balance.D. Its owner will receive a picture of the thief.16. A. It's out-dated in this digital age.B. It can text messages automatically.C. It is a multifunctional wallet.D. It is unique in appearance and function.Questions 17 through 20 are based on the following conversation.17. A. The concert is beyond her curfew(宵禁).B. She can’t go out on school night.C. Her mother is not available.D. She doesn’t like the band.18. A. His parents set a strict rule for him.B. His parents don’t care when he is back.C. He is self-disciplined and trustworthy.D. He envies those who have curfews.。
《上海市杨浦区届高三上学期期末质量抽测(一模)(化学)》
杨浦区 2018 学年度高三学科测试化学试卷本试卷分为第I 卷 (第 1—4 页 )和第Ⅱ卷 (第 5— 8 页 )两部分。
全卷共8 页。
满分 l50 分，考试时间l20 分钟。
第I卷 (共66分)考生注意：1．答第I 卷前，考生务必在答题卡上用钢笔或圆珠笔清楚填写学校、姓名、准考据号，并用2B 铅笔正确涂写准考据号。
2．第I 卷 (1-22 小题 )，由机器阅卷，答案一定所有涂写在答题卡上。
考生应将代表正确答案的小方格用2B 铅笔涂黑。
注意试卷题号和答题纸编号一一对应，不可以错位。
答案需要改正时，一定将原选项用橡皮擦去，从头选择。
答案不可以涂写在试卷上，涂写在试卷上一律不给分。
相对原子质量：Fe-56一、选择题 (此题共 10 分，每题 2 分，只有一个正确选项。
)1．卢瑟福的α粒子散射实考证明原子中存在A ．α粒子B ．电子 C．中子 D ．原子核2．我国是世界最大的耗煤国家。
以下对煤综合利用的表达错误的选项是A ．煤的气化是化学变化B ．煤的干馏是物理变化C．煤的液化是化学变化D．煤焦油分馏出苯的同系物是物理变化3．已知： C( 金刚石，固 )C(石墨，固 ) +1.9kJ ，则以下判断正确的选项是A．金刚石转变为石墨可用右图表示B．等质量的石墨比金刚石能量高C．石墨比金刚石稳固D．金刚石转变为石墨没有化学键的断裂与生成能量石墨金刚石反响进度4．以下对化学用语的理解正确的选项是A ．原子构造表示图+624：表示1213CC，也能够表示B ．比率模型：表示二氧化碳分子，也能够表示水分子．．C．电子式．：：表示羟基，也能够表示氢氧根离子O H．．D ．构造简式 (CH 3)2CHOH ：表示 2–丙醇，也能够表示1–丙醇5．以下物质发生变化时，所战胜的粒子间互相作用属于同种种类的是1/11A．液溴和己烷分别受热变为气体B．干冰和氯化铵分别受热变为气体C．硅和铁分别受热融化D．氯化氢和蔗糖分别溶解于水二、选择题 (此题共 36 分，每题 3 分，只有一个正确选项。
上海市杨浦区2018届高三地理上学期期末质量调研试题
上海市杨浦区2018届高三地理上学期期末质量调研试题一.选择题（共 40 分，每小题 2 分，每小题只有一个正确答案)1.被称为“中国天眼”的 500m 口径球面射电天文望远镜位于贵州省平塘县的喀斯特洼坑中，选择在这里建设“中国天眼”主要考虑的因素是A。
气候特点B。
自然植被 C.地形地貌D。
交通运输2.中国科学院国家天文台太阳活动预报中心定期发布太阳活动预报，该预报从太阳活动主要标志进行综述，下列属于太阳活动主要标志的是A.极光和日珥B。
日珥和耀斑C。
磁暴和极光D。
太阳黑子和耀斑3。
假设国际各大黄金市场都是在当地时间 9:00-15：00 之间进行交易，某投资者 14：00 在上海市场购买了一批黄金，10 小时后价格有了大幅上涨，他想马上卖掉手中的黄金，应该选择的交易市场是A。
纽约（74°W） B.苏黎世（8°E）C。
香港（114°E）D。
伦敦（0°)4。
“月上柳梢头，人约黄昏后”,欧阳修的名篇《生查子·元夕》生动地描述了某节日时的景象。
该节日时，下列地月位置关系图中正确的是B C D5.裂谷和海沟都位于板块的边界，下列关于裂谷和海沟说法正确的是A.裂谷位于板块的生长界,海沟位于板块的消亡界B。
裂谷位于板块的消亡界，海沟位于板块的生长界C.两者都位于板块的生长界D。
两者都位于板块的消亡界6.右图所示的河流蜿蜒曲折，看上去犹如一条明亮的缎带飘落在人间。
关于这种河流形态成因的说法，正确的是A。
甲为凸岸，侵蚀为主B。
甲为凹岸,堆积为主C.甲为凸岸，堆积为主D.甲为凹岸，侵蚀为主7.为了保证飞行的平稳，飞机常常选择在对流层之上的平流层里飞行，但由于对流层厚度有时空变化，飞机飞行的高度也相应变化.一般来说飞行高度最高的是A。
冬季的低纬度地区B。
夏季的低纬度地区C。
冬季的高纬度地区D。
夏季的高纬度地区8。
南亚的恒河三角洲是世界上人口最稠密的地区之一，这里土层深厚,水网稠密，但是每到雨季,三角洲常常被淹。
上海市杨浦区2018届高三数学上学期期末质量调研试题
上海市杨浦区2018届高三数学上学期期末质量调研试题一. 填空题（本大题共12题，1-6每题4分，7-12每题5分，共54分） 1. 计算1lim(1)n n→∞-的结果是2. 已知集合{1,2,}A m =，{3,4}B =，若{3}A B =，则实数m =3. 已知3cos 5θ=-，则sin()2πθ+=4. 若行列式124012x -=，则x = 5. 已知一个关于x 、y 的二元一次方程组的增广矩阵是112012-⎛⎫⎪⎝⎭，则x y +=6. 在62()x x-的二项展开式中，常数项的值为7. 若将一颗质地均匀的骰子（一种各面上分别标有1，2，3，4，5，6个点的正方体玩具）， 先后抛掷2次，则出现向上的点数之和为4的概率是8. 数列{}n a 的前n 项和为n S ，若点(,)n n S （*n N ∈）在函数2log (1)y x =+的反函数的图像上，则n a =9. 在ABC ∆中，若sin A 、sin B 、sin C 成等比数列，则角B 的最大值为10. 抛物线28y x =-的焦点与双曲线2221x y a-=的左焦点重合，则这条双曲线的两条渐近线的夹角为11. 已知函数()cos (sin )f x x x x =x R ∈，设0a >，若函数()()g x f x α=+ 为奇函数，则α的值为12. 已知点C 、D 是椭圆2214x y +=上的两个动点，且点(0,2)M ，若MD MC λ=，则实数λ的取值范围为二. 选择题（本大题共4题，每题5分，共20分） 13. 在复平面内，复数2iz i-=对应的点位于（ ） A. 第一象限 B. 第二象限 C. 第三象限 D. 第四象限14. 给出下列函数：①2log y x =；②2y x =；③||2x y =；④arcsin y x =. 其中图像关于y 轴对称的函数的序号是（ ）A. ①②B. ②③C. ①③D. ②④ 15. “0t ≥”是“函数2()f x x tx t =+-在(,)-∞+∞内存在零点”的（ ） A. 充分非必要条件 B. 必要非充分条件 C. 充要条件 D. 既非充分也非必要条件16. 设A 、B 、C 、D 是半径为1的球面上的四个不同点，且满足0AB AC ⋅=，0AC AD ⋅=，0AD AB ⋅=，用1S 、2S 、3S 分别表示ABC ∆、ACD ∆、ABD ∆的面积，则123S S S ++的最大值是（ ） A. 12B. 2C. 4D. 8三. 解答题（本大题共5题，共14+14+14+16+18=76分）17. 如图所示，用总长为定值l 的篱笆围成长方形的场地，以墙为一边，并用平行于一边的篱笆隔开.（1）设场地面积为y ，垂直于墙的边长为x ，试用解析式将y 表示成x 的函数，并确定这个函数的定义域； （2）怎样围才能使得场地的面积最大？最大面积是多少？18. 如图，已知圆锥的侧面积为15π，底面半径OA 和OB 互相垂直，且3OA =，P 是母线BS 的中点.（1）求圆锥的体积；（2）求异面直线SO 与PA 所成角的大小. （结果用反三角函数值表示）19. 已知函数1()ln1xf x x+=-的定义域为集合A ，集合(,1)B a a =+，且B A ⊆. （1）求实数a 的取值范围；（2）求证：函数()f x 是奇函数但不是偶函数.20. 设直线l 与抛物线2:4y x Ω=相交于不同两点A 、B ，O 为坐标原点. （1）求抛物线Ω的焦点到准线的距离；（2）若直线l 又与圆22:(5)16C x y -+=相切于点M ，且M 为线段AB 的中点，求直线l 的方程；（3）若0OA OB ⋅=，点Q 在线段AB 上，满足OQ AB ⊥，求点Q 的轨迹方程.21. 若数列A ：1a ，2a ，⋅⋅⋅，n a （3n ≥）中*i a N ∈（1i n ≤≤）且对任意的21k n ≤≤-，112k k k a a a +-+>恒成立，则称数列A 为“U -数列”.（1）若数列1，x ，y ，7为“U -数列”，写出所有可能的x 、y ；（2）若“U -数列” A ：1a ，2a ，⋅⋅⋅，n a 中，11a =，2017n a =，求n 的最大值； （3）设0n 为给定的偶数，对所有可能的“U -数列”A ：1a ，2a ，⋅⋅⋅，0n a ，记012max{,,,}n M a a a =⋅⋅⋅，其中12max{,,,}s x x x ⋅⋅⋅表示1x ，2x ，⋅⋅⋅，s x 这s 个数中最大的数，求M 的最小值.参考答案一. 填空题1. 32. 35- 3. 2 4. 6 5. 160- 6.1127. 1 8. 12n n a -= 9. 3π 10. 3π11. *()26k k N ππα=-∈ 12. 1[,3]3二. 选择题13. C 14. B 15. A 16. B三. 解答题17．（本题满分14分，第1小题满分6分，第2小题满分8分）解：（1）设平行于墙的边长为a ， 则篱笆总长3l x a =+，即3a l x =-， ……2分所以场地面积(3)y x l x =-，(0,)3lx ∈ （定义域2分） ……6分（2）222(3)33()612l l y x l x x lx x =-=-+=--+，(0,)3l x ∈ ……8分所以当且仅当6l x =时，2max 12l y = ……12分综上，当场地垂直于墙的边长x 为6l 时，最大面积为212l ……14分18．（本题满分14分，第1小题满分7分，第2小题满分7分） 解1：（1）由题意，15OA SB ππ⋅⋅=得5BS =， ……2分故4SO === ……4分从而体积2211341233V OA SO πππ=⋅⋅=⨯⨯=. ……7分 （2）如图，取OB 中点H ，联结PH AH 、. 由P 是SB 的中点知PH SO ∥，则APH ∠（或其补角）就是异面直线SO 与PA 所成角. ……10分 由SO ⊥平面OAB ⇒PH ⊥平面OAB ⇒PH AH ⊥.在OAH ∆中，由OA OB ⊥得2AH ==；……11分在Rt APH ∆中，90AHP O∠=，122PH SB ==，AH =……12分则tan 4AH APH PH ∠==，所以异面直线SO 与PA 所成角的大小 …14分 (其他方法参考给分)19．（本题满分14分，第1小题满分6分，第2小题满分8分） 解：（1）令101xx+>-，解得11x -<<，所以(1,1)A =-， ……3分 因为B A ⊆，所以111a a ≥-⎧⎨+≤⎩，解得10a -≤≤，即实数a 的取值范围是[1,0]- ……6分（2）函数()f x 的定义域(1,1)A =-，定义域关于原点对称 ……8分1()()ln 1()x f x x ---=+-1111ln ln ln ()111x x x f x x x x -+--⎛⎫===-=- ⎪-++⎝⎭……12分 而1()ln32f =，11()ln 23f -=，所以11()()22f f -≠ ……13分 所以函数()f x 是奇函数但不是偶函数. ……14分20．（本题满分16分，第1小题满分4分，第2小题满分5分，第3小题满分7分） 解：（1）抛物线Ω的焦点到准线的距离为2 ……4分 （2）设直线:l x my b =+当0m =时，1x =和9x =符合题意 ……5分当0m ≠时，11(,)A x y 、22(,)B x y 的坐标满足方程组24x my by x=+⎧⎨=⎩，所以2440y my b --=的两根为1y 、2y 。
杨浦区2018学年度第一学期高三年级模拟质量调研 数学学科试卷及答案
杨浦区2018学年度第一学期高三年级模拟质量调研数学学科试卷及答案 2018.12.考生注意： 1．答卷前，考生务必在答题纸写上姓名、考号,并将核对后的条形码贴在指定位置上.2． 本试卷共有21道题，满分150分，考试时间120分钟．一、填空题（本大题共有12题，满分54分，第1～6题每题4分，第7～12题每题5分）考生应在答题纸的相应位置填写结果.1．设全集{}=1,2,3,4,5U ，若集合{}3,4,5A =，则U A =ð ▲ ．2．已知扇形的半径为6，圆心角为3π，则扇形的面积为 ▲ ． 3．已知双曲线221x y -=，则其两条渐近线的夹角为 ▲________．4. 若nb a )(+展开式的二项式系数之和为8，则n = ▲________．5. 若实数,x y 满足 221x y +=，则xy 的取值范围是▲________．6. 若圆锥的母线长=l )(5cm ，高)(4cm h =，则这个圆锥的体积等于▲________()3cm . 7. 在无穷等比数列{}n a 中，121lim()2n n a a a →∞+++=，则1a 的取值范围是▲________． 8. 若函数1()ln1xf x x+=-的定义域为集合A ，集合(,1)B a a =+. 且B A ⊆， 则实数a 的取值范围为▲________．9. 在行列式中，第3行第2列的元素的代数余子式记作，则的零点是▲________10. 已知复数1cos 2()i z x f x =+，2cos )i z x x =++ (,R x λ∈，i 为虚数单位）．在复平面上，设复数12,z z 对应的点分别为12,Z Z ，若︒=∠9021OZ Z ，其中O 是坐标原点，则函数()f x 的最小正周期 ▲________． 11. 当a x <<0时，不等式2)(1122≥-+x a x 恒成立，则实数a 的最大值为 ▲________． 274434651xx--()f x 1()y f x =+12. 设d 为等差数列}{n a 的公差，数列}{n b 的前n 项和n T ，满足)N ()1(21*∈-=+n b T n n n n ，且25b a d ==. 若实数)3,N }(|{*32≥∈<<=∈+-k k a x a x P m k k k ，则称m 具有性质k P .若n H 是数列}{n T 的前n 项和，对任意的*N ∈n ，12-n H 都具有性质k P ，则所有满足条件的k 的值为▲________.二、选择题（本题共有4题，满分20分，每题5分）每题有且只有一个正确选项，考生应在答题纸的相应位置，将代表正确选项的小方格涂黑.13. 下列函数中既是奇函数，又在区间[-1,1]上单调递减的是 ………( ). x x f arcsin )(=. lg y x =.()f x x =-.()cos f x x =14. 某象棋俱乐部有队员5人，其中女队员2人. 现随机选派2人参加一个象棋比赛，则选出的2人中恰有1人是女队员的概率为 ………( )()A .310()B .35()C .25()D .2315. 已知x x f θsin log )(=，，设sin cos ,2a f θθ+⎛⎫=⎪⎝⎭b f =，sin 2sin cos c f θθθ⎛⎫=⎪+⎝⎭，则c b a ,,的大小关系是 ………( )()A .b c a ≤≤.()B .a c b ≤≤. ()C .a b c ≤≤.()D .c b a ≤≤.16. 已知函数nx x m x f x ++⋅=22)(，记集合},0)(|{R x x f x A ∈==，集合},0)]([|{R x x f f x B ∈==，若B A =，且都不是空集，则n m +的取值范围是………( )()A . [0,4) ()B . [1,4)- ()C . [3,5]- ()D . [0,7)()A ()B ()C ()D )2,0(πθ∈三、解答题（本大题共有5题，满分76分）解答下列各题必须在答题纸的相应位置写出必要的步骤.17.（本题满分14分，第1小题满分6分，第2小题满分8分）如图，PA ⊥平面ABCD ，四边形ABCD 为矩形，1PA AB ==，2AD =，点F 是PB 的中点，点E 在边BC 上移动.（1）求三棱锥E PAD -的体积；（2）证明：无论点E 在边BC 的何处，都有AF PE ⊥.18. （本题满分14分，第1小题满分7分，第2小题满分7分）在ABC ∆中，角,,A B C 所对的边分别为,,a b c ，且5cos 13B =． （1）若4sin 5A =，求cos C ； （2）若4b =，求证：5-≥⋅BC AB ．19. （本题满分14分，第1小题满分6分，第2小题满分8分）上海某工厂以x 千克/小时的速度匀速生产一种产品，每一小时可获得的利润是)315(xx -+元，其中101≤≤x .（1）要使生产该产品2小时获得的利润不低于30元，求x 的取值范围；（2）要使生产900千克该产品获得的利润最大，问：该厂应选取何种生产速度？并求最大利润.20. （本题满分16分，第1小题满分4分，第2小题满分5分，第3小题满分7分）如图，已知点P 是y 轴左侧（不含y 轴）一点，抛物线x y C 4:2=上存在不同的两点B A ,，满足PB PA ,的中点均在抛物线C 上.（1）求抛物线C 的焦点到准线的距离；（2）设AB 中点为M ，且),(),,(M M P P y x M y x P ，证明：M P y y =；（3）若P 是曲线221(0)4y x x +=<上的动点，求PAB ∆面积的最小值.21. （本题满分18分，第1小题满分4分，第2小题满分5分，第3小题满分9分） 记无穷数列{}n a 的前n 项中最大值为n M ，最小值为n m ，令2n nn M m b +=，其中*N ∈n . (1) 若2cos2n n n a π=+，请写出3b 的值； (2) 求证：“数列{}n a 是等差数列”是“数列{}n b 是等差数列”的充要条件；(3) 若对任意n ，有||2018n a <, 且||1n b =，请问：是否存在*K ∈N ，使得对于任意不小于K 的正整数n ，有1n n b b += 成立？请说明理由．青浦区2018学年第一学期高三年级期终学业质量调研测试数学参考答案及评分标准 2018.12说明1．本解答列出试题一种或几种解法，如果考生的解法与所列解法不同，可参照解答中评分标准的精神进行评分．2．评阅试卷，应坚持每题评阅到底，不要因为考生的解答中出现错误而中断对该题的评阅．当考生的解答在某一步出现错误，影响了后续部分，但该步以后的解答未改变这一题的内容和难度时，可视影响程度决定后面部分的给分，但是原则上不应超出后面部分应给分数之半，如果有较严重的概念性错误，就不给分．3．第17题至第21题中右端所注的分数，表示考生正确做到这一步应得的该题分数． 4．给分或扣分均以1分为单位．一.填空题（本大题满分54分）本大题共有12题，1-6每题4分，7-12每题5分考生应在答题纸相应编号的空格内直接填写结果. 1．{}1-； 2．“若a b <，则22am bm <”； 3．()2,3-；4．43； 5．12π；67．(0,4)(4,8)； 8．32；9. 80； 10. 14；11．10,2⎛⎤ ⎥⎝⎦；12.1,3⎤⎦.二.选择题（本大题满分20分）本大题共有4题，每题有且只有一个正确答案，考生应在答题纸的相应编号上，将代表答案的小方格涂黑，选对得5分，否则一律得零分. 13. A ；14. D ； 15．C ；16. C .三．解答题（本大题满分74分）本大题共有5题，解答下列各题必须在答题纸相应编号的规定区域内写出必要的步骤.17.(本题满分14分）本题共2小题，第（1）小题6分，第（2）小题8分. 解：（1）在正四棱柱1111ABCD A B C D -中， ∵1AA ⊥平面ABCD ，AD ⊂≠平面ABCD ， ∴1AA AD ⊥，故14AA =， ∴正四棱柱的侧面积为(43)448⨯⨯=， 体积为2(3)436⨯=．（2）建立如图的空间直角坐标系O xyz -，由题意 可得(0,0,0)D ,(3,3,0)B ,1(3,0,4)A ,(0,0,0)D ,3(,0,2)2E ,1(0,0,4)AA =，3(,3,2)2BE =--，设1AA 与BE 所成角为α，直线BE 与平面ABCD 所成角为θ，则11cos ||||AA BEAA BE α⋅===⋅ 又1AA是平面ABCD 的一个法向量， 故sin cos θα==，θ=．所以直线BE 与平面ABCD所成的角为arcsin61． 【另法提示：设AD 中点为G ，证EBG ∠即为BE 与平面ABCD 所成的角，然后解直角三角形EBG ，求出EBG ∠】arctan 1518．（本题满分14分）第（1）小题满分8分，第（2）小题满分6分.解：（1）,1,01BP t CP t t ==-≤≤45DAQ θ∠=︒-,1tan(45)1tDQ tθ-=︒-=+, 12111t tCQ t t-=-=++所以211t PQ t +===+ 故221111211t t l CP CQ PQ t t t t t+=++=-++=-++=++ 所以△CPQ 的周长l 是定值2（2）111221ABP ADQ ABCD t t S S S S t ∆∆-=--=--⨯+正方形122(1)221t t=-++≤+当且仅当1t =时，等号成立所以摄像头能捕捉到正方形ABCD 内部区域的面积S至多为22hm19.(本题满分14分）本题共2小题，第（1）小题6分，第（2）小题8分. 解：（1）因为函数()3g x x =是函数()3mf x x x=+在区间[)+∞4，上的弱渐近函数， 所以()()1mf xg x x-=≤ ，即m x ≤在区间[)+∞4，上恒成立， 即444m m ≤⇒-≤≤（2）()()2f x g x x x -==[)2,+x ∈∞，()()22(f x g x x x ∴-==-A DCBθP Q45令2()()()2(x xh x f x g x x=-===任取122x x≤<，则2212311x x≤-<-≤<120xx<<12()()h x h x⇒>⇒<即函数()()()2(h x f x g x x=-=在区间[)2,+∞上单调递减，所以(()()0,4f x gx-∈-，又([]0,41,1-⊆-，即满足()2g x x=使得对于任意的[)2,x∈+∞有()()1f xg x-≤恒成立，所以函数()2g x x=是函数()f x=在区间[)2,+∞上的弱渐近函数．20.(本题满分16分）本题共3小题，第（1）小题4分，第（2）小题6分，第（3）小题6分.解：（1）242a a=⇒=，又双曲线的渐近线方程为y=，所以bba==双曲线的标准方程是221412x y-=．（2）法一：由题不妨设11()A x，22(,)B x，则1212(,)22x xP+，由P在双曲线上，代入双曲线方程得124x x⋅=；法二：当直线AB的斜率不存在时，显然2x=±，此时124xx⋅=；当直线AB的斜率存在时，设直线AB的方程为(0,y kxt k k=+≠≠则由y kx tAy=+⎛⎧⎪⇒⎨=⎪⎩同理y kx tBy=+⎛⎧⎪⇒⎨=⎪⎩此时223,33kt t P k k ⎛⎫ ⎪--⎝⎭代入双曲线方程得224(3)t k =-，所以212243t x x k ⋅==-（3）①对称中心：原点；对称轴方程：,y y x ==②顶点坐标：3,22⎛⎫⎪ ⎪⎝⎭，322⎛⎫-- ⎪ ⎪⎝⎭；焦点坐标：(，(1,-实轴长：2a =、虚轴长：22b =、焦距：24c =③范围：()0,,2,x y ⎡≠∈-∞+∞⎣④渐近线：0,3x y x ==21.(本题满分18分）本题共3小题，第（1）小题4分，第（2）小题6分，第（3）小题8分.解：（1）因为数列{}n b 是“Γ数列”，且11b =，3k =、4d =、0c =，所以当1n ≥，n *∈N 时，310n b +=，又*2016672N 3=∈，即20170b =， 20182017044b b d =+=+=，20192018448b b d =+=+= （2）因为数列{}n b 是“Γ数列”，且12b =，4k =、2d =、1c =()()()414344341434243434312336n n n n n n n n n n b b cb b b d b b d b b d b d +---------=-=⨯+-=+-=+-==则数列前4n 项中的项43n b -是以2为首项，6为公差的得差数列，易知{}4n b 中删掉含有43n b -的项后按原来的顺序构成一个首项为2公差为2的等差数列，41543()n n S b b b -∴=+++()()()()23467846454442414+n n n n n n b b b b b b b b b b b b -----++++++++++++⎡⎤⎣⎦2(1)3(31)26(3)2212822n n n n n n n n --=+⨯+⨯+⨯=+ 43nn S λ≤⋅，43nn S λ∴≤，设2412833n n n n S n n c +==，则()max n c λ≥，22211112(1)8(1)12824820333n n n n n n n n n n n c c +++++++-++-=-=当1n =时，2248200n n -++>，12c c <；当2n ≥，n *∈N 时，2248200n n -++<，1n n c c +<，∴123c c c <>>，∴()2max 649n c c ==， 即()2max 649n c c λ≥==（3）因为{}n b 既是“Γ数列”又是等比数列，设{}n b 的公比为1n nb q b +=，由等比数列的通项公式有1n n b bq -=，当m *∈N 时，21k m k m b b d ++-=，即()11km km km bq bq bq q d +-=-=① 1q =，则0d =，n b b =； ② 1q ≠，则()1kmd qq b=-，则kmq 为常数，则1q =-，k 为偶数，2d b =-，()11n n b b -=-； 经检验，满足条件的{}n b 的通项公式为n b b =或()11n n b b -=-.。
最新-杨浦区2018学年度第一学期高三年级学科测试[上学期] 精品
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杨浦区2018学年度第一学期高三年级学科测试物理试卷考生注意：1．本试卷共8页，满分150分。
考试时间120分钟。
考生应用钢笔或圆珠笔将答案直接写在试卷上。
2．本试卷一、四大题中，小题序号后标有字母A 的试题，适合于使用一期课改教材的考生；标有字母B 的试题，适合于使用二期课改教材的考生；其它未标字母A 或B 的试题为全体考生必做的试题。
不同大题可以选择不同的A 类或B 类试题，但同一大题的选择必须相同，若在同一大题内同时选做A 类、B 类两类试题，阅卷时只以A 类试题计分。
3．第19、20、21、22、23题要求写出必要的文字说明、方程式和重要的演算步骤。
只写出最后答案，而未写出主要演算过程的，不能得分。
有关物理量的数值计算问题，答案中必须明确写出数值和单位。
一．（20分）填空题。
本大题共5小题，每小题4分，答案写在题中横线上的空白处或指定位置，这要求写出演算过程。
A 类题（适合于使用一期课改教材的考生）1A ．在一个平面内有六根彼此绝缘的通电直导线，电流方向如右图所示，各导线的电流大小相等，I 、II 、III 、IV 为四个面积相等的区域，则垂直纸面指向纸内的磁通量最大的区域是_____________，垂直纸面指向纸外的磁通量最大的区域是_____________。
2A ．将力F 分解为两个分力，若已知F 的大小及F 和F 2之间的夹角θ，且θ为锐角，则当F 1和F 2大小相等时，F 1的大小为_____________，而当F 1有最小值时，F 2的大小为_____________。
3A ．带如下图所示，取计数点A 、B 、C 、D 、E 每相邻两个计数点间还有四个实验点画出），已用刻度尺测量以A 为起点，到B D 、E 各点的距离标在图上，则纸带运动加速度的大小为a ＝_____________m/s 2，打纸带上C 点时的瞬时速度大小为v C＝_____________ m/s 。
上海市杨浦区2018届高三语文上学期期末质量调研试题
上海市杨浦区2018届高三语文上学期期末质量调研试题一积累应用（10分）1.根据提示填空：（5分）（1），万钟于我何加焉？（孟子《鱼我所欲也》）（2），万方多难起登临。
（杜甫《》）（3）人类的物质文明无论多么奢华，坚固，都逃不过时间的淘洗，李白在《登金陵凤凰台》中的一联“，”对此发出感慨。
2.按要求选择。
（5分）（1）现代人做事讲求“有法可依”“有根有据”，以下表述对应的一项是（）（2分）A.导之以德，齐之以礼，有耻且格天行有常，不为尧存，不为桀亡B.没有规矩，不成方圆事不目见耳闻，而臆断其有无，可乎C.礼禁未然之前，法施已然之后道听而途说，德之弃也D.国不可无法，有法而不善与无法等不以言举人，不以人废言（2）填入下面语段空白处的词句，最恰当的一项是（）（3分）中国古典诗文的审美通常停留于农耕时代的意象，中国古代文学理论的气、韵、境、味等均是中国人独特情趣的表现。
然而，面对现代社会的复杂经验，以“诗评、文评”为主要内容的中国古代文学理论只能做出相当有限的反应。
A.精美的意象，隽永的意境仍能酣畅淋漓的表达B.古典诗文的朦胧、雅致倒是十分贴切C.精致的古典诗文已显得力不从心D.再精美的诗文都已经失去言说的能力二阅读（70分）（一）阅读下文，完成3—7题。
（16分）标准化时代的文化乡愁（有删节）（1）用坐标横轴表示诗的完美性，用纵轴表示重要性，确立一个坐标点，计算其所占面积，便可测算诗的伟大指数。
这种表述几近完美，将诗歌欣赏的感性沉迷转化为可资遵循的理性路径，将只能意会难以言传的审美体悟做成可视化的数学模型，既易于理解又具有操作性。
但这改变不了标准化时代“精致的平庸．．．．．”的本质。
它回答不了如下问题：为什么在我们的生命经验里，诗歌会比视像更美，更能让读者悸动与心跳、更能感受美丽与哀愁、更能使人眷恋这世间红尘？（2）严格说，悟诗比解诗更重要。
南宋严羽借禅喻诗：“大抵禅道唯在妙悟,诗道亦在妙悟。
”[1]行家眼中，这或者更贴近诗的本质:诗歌往往只表现情绪，传达情感，能触摸这种情感，感受语言的体温，也就够了。
杨浦区2018学年度第二学期高三年级学业质量调研物理试卷答案ok(3)
杨浦区2018学年度第二学期高中等级考质量调研 物理学科参考答案及评分标准 一．选择题（共40分。
第1-8小题，每小题3分，第9-12小题，每小题4分。
每小题只有一个正确答案。
） 题号 1 2 3 4 5 6 7 8 910 11 12 答案 A B C B C C D DC B CD 二．填空题（本大题有2小题，每小题4分，每空格2分，共20分）13．54mg ，超重； 14．96，62； 15．a 点和c 点；（3，0.4）； 16．S mg p +0, h mg S P mg ⋅+20； 17．10Ω，0.6W. 三．综合题（本大题有3小题，18题12分、19题12分，20题16分共40分）18．（8分,每小题2分）（1）向左；（2）不发生；（3）向右；（4）向右。
19.（15分）解：（1）进入磁场前小车匀速运动时速度最大，则有F ＝f ，（1分）牵引力的功率为p ＝Fv ＝fv ＝0.4×5W=2W ；（2分）（2）车头刚进入磁场时，产生的感应电动势为:E ＝NBLv ＝10×1.4×0.1×5V=7V ，（2分）据闭合电路欧姆定律:A 5.3A 27===R E I ，（2分） 车头刚进入磁场时，小车受到阻力、安培力（受力分析1分）:F 安＝NBIL ＝10×1.4×3.5×0.1N=4.9N ，（2分）据牛顿第二定律F 安+f ＝ma 解得：22s /m 5.26s /m 2.04.09.4=+=+=m f F a 安（2分） （3）根据能量守恒定律得：s f Q mv 2212⋅+=（1分） 解得：J 18.2J )4.024.052.021(22122=⨯⨯-⨯⨯=⋅-=s f mv Q （2分） 答：（1）进入磁场前小车所受牵引力的功率P 为2W ；（2）车头刚进入磁场时，小车的加速度大小为26.5m/s 2；（3）电磁刹车过程中产生的焦耳热Q 为2.18J 。
2018-2019学年杨浦区高三年级英语一模测试卷（含答案）
杨浦区2018学年度第一学期高三模拟质量调研英语学科试卷2018.12考生注意:1.考试时间120分钟,试卷满分140分；2.本次考试设试卷和答题纸两部分.所有答题必须涂(选择题)或写(非选择题>在答题纸上,做在试卷上一律不得分；3务必在答题纸上填写准考证号和姓名,井将核对后的条形码贴在指定位置上。
I.Listening ComprehensionSectionADirections:In Section A,you will hear ten short conversations between two speakers.At the end of e ach conversation,a question will be asked about what was said.Theconversations and the questions will be spoken only once, After you hear aconversation and the question about it,read the four poss ible answers on your paper.and decide which one is the best answer to the question you have heard.1. A.Job applicants. B.University students.C.News reporters.D.Public speakers.2. A.$36. B. $60.C. $24.D.$303. A.Nervous. B.Exc ited.C.Surprised.D.Calm.4. A.They can hardly find time to do exercise.B.Both of them are fond of doing exercise.C.Doing exercise is the last thing they'd like to do.D.The woman disagrees to do exercise with the man.5.A.Student and teacher. B Guest and receptionist.C.Customer and shop assistant.D.Daughter and father.6. A.The Student Union. B.The Tutoring Service Center.C.Her professor's office.D.Her tutor's home.7. A.The coverage of newspapers. B.The nature of humans.C.The increase of crime rate.D.The impact of mass media.高三英语第1页共19页8. A.Doctor Green is very busy on Mondays.B.Doctor Green forgot to put the man on the schedule.C.An unexpected patient visited Doctor Green last Monday.D.Patients can usually see Doctor Green on schedule.9. A.She is disappointed with his decision.B.She is crazy about going camping in the tropical jungle.C.She tries to persuade the man not to go with Jerry.D.She suggests the man reconsider his plan.10. A.Because he favors goods in physical stores.B.Because he enjoys the offline shopping experience.C.Because he doesn't have much money.D.Because he doesn't like the shopping festival.Section BDirection:In Section B, you will hear two short passages and one longer conversation, and you wil be asked several questions on each of the passages and the conversation. The passages and the conversation will be read twice, but the questions will be spoken only once. When you hear a question, read the four possible answers on your paper and decide which one would be the best answer to the question you have heard.Questions 11 through 13 are based on the following passage.11. A. A number of giant rats are hidden in the fields or forests.B. V iolent robbers may come out and hurt innocent civilians.C. People may step onto a landmine(地雷) and get injured.D. Other roads have a litter problem, which spoils good mood.12. A. It is a rare species of rat.B. It has a good sense of smell.C. It sacrifices its life to detect dangers.D. It is terrified of explosive device.高三英语第2页共19页13.A. 13 minutes B. 30 minutesC. 40 minutesD. 4 daysQuestions 14 through 16 are based on the following passage.14.A. It bans the sales of salty and unhealthy food.B. Its residents lose altogether 100,000kg by 2020.C. Everyone weighs himself on giant scales in public.D. Local doctors make personalized diets for everyone15. A. Local people share healthy diet with each other.B. Thousands of residents kick football to keep slim.C. Local restaurants use olive oil to replace butter.D. Government officials persevere in physical exercise.16. A. Students are encouraged to walk or ride to schoolB. Students are allowed to ride bicycles in school libraries.C. Parents are offered devices to monitor children's walking time.D. Fruits are provided for those who are addicted to online games.Questions 17 through 20 are based on the following passage.17. A. Neither of them can find a suitable game.B. They are both enthusiastic about games.C. Good games cost a large amount of money.D. They often go Dutch when buying gifts.18. A. It includes fantasy role-playing.高三英语第3页共19页B. It doesn't have an actual ending.C. It is an expensive online game.D. It is something like a racing game.19. A. Players have opportunities to make new friends.B. Players can have face-to-face communication.C. Players may be rewarded with delic ious food.D. Players can start the game at any time they want.20. A. Add variety to the recommended game.B. Look around to find a cheaper online game.C. Persuade the woman to change her mind.D. Try to find an extraordinary online game.II. Grammar and VocabularySection ADirections: After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each with the proper form of the given word; for the other blanks, use one word that best fits each blank.A newly discovered tea plant is caffeine-freeThe world loves tea and some 3m tons of tea are consumed every year. Tea can be good for health, as it contains compounds that help to lower cholesterol（胆固醇）and reduce the risk of heart disease. But there is a downside. Tea contains caffeine which, (21) __________ it improves mental alertness, can also cause anxiety, insomnia and other problems.(22) __________ would be agreeable is that a tea plant that provides all the taste and goodness but with little or (23) __________ of the caffeine has been found. Liang Chen and Ji-Qiang Jin of高三英语第4页共19页the Tea Research Institute of the Chinese Academy of Agricultural Sciences have discovered just such a plant (24) __________ (grow) wild in a remote area in Fujian province, southern China. (25) __________ they report in the Journal of Agricultural and Food Chemistry, not only is the tea plantnaturally caffeine-free but it also contains a number of unique medicinal compounds that, the locals believe, offer considerable health benefits.(26) __________ (know)locally as Hongyacha, the newly discovered plant grows only between 700 and 1,000 metres (27) __________ sea level around a handful of Chinese villages.Now the researchers (28) __________ (explore) methods to protect Hongyacha in its natural habitat while further studies are carried out. It can take time – and sometimes it does not work – for new plant varieties (29) __________ (breed) for commercial use. A pair of naturally caffeine-free coffee plants were discovered in 2003, but little progress (30) __________ (report) Tea enthusiasts will be watching Hongyacha with interest. And others will wonder what else is out there.Section BDirections: Fill in each blank with a proper word chosen from the box. Each word can be used only once. Note that there is one word more than you need.Dealing with Difficult RelationshipsEveryone has at least one awkward or ___31___ relationship. It may be with somebody who will ___32___ your energy whenever you are with them. Or worse, it could be someone who always cuts you down. This person may be a family member or even a friend. No matter who it is, it‟s necessary that you learn to set boundaries for yourself. Otherwise this kind of relationship can chip away at your self-esteem.Setting boundaries for difficult relationships starts by ___33___ how you are affected by the relations hip. Do they bring you closer to your goals or pull you farther away? For example, it‟s time to study for tomorrow‟s test. But your friend wants to take you to a party. Here, setting boundaries will help protect your ___34___ goals.高三英语第5页共19页Next, decide how much time you should spend with these people. It‟s easy to overcommit yourself. But it‟s difficult to help others if you forget to protect your own ___35___.How do you know if a relationship is unhealthy, and it‟s time to set boundaries? Here are a few practical questions to ask yourself.1.How does this relationship affect me?Every ___36___ can affect you positively or negatively. For example, someone whopressuresyou to something you‟re not comfortable doing will ____37___ you out. But a friend who c o ns id ers h ow yo u f e e l w ill r esp ec t y o ur ___38___t o try s om et h ing new.2.Why am I in this relationship in the first place?P eople may try to keep you in an unhealthy relationship. By ___39___ you it‟s yourobligation or duty, you forget about your own needs. Sadly, by remaining ___40___ to these people, you forget who you are. Y ou allow them to take advantage of you or even belittle you.Settling boundaries requires taking a long, honest look at yourself. By saying “no” to harmful patterns in relationships, you say “yes” to a healthier you.III. Reading ComprehensionSection ADirections:For each blank in the following passage there are four words or phrases marked A, B, C and D. Fill in each blank with the word or phrase that best fits the context.According to German novelist Heinrich Mann (1871-1950), a house without books is like a room without windows. Mann ___41___ pointed out the value of books, but some researchers have found evidence that people with books in their homes really do gain a window on the world.A new study in the journal Social Science Research, publishing in October, suggests that people who grow up with more books are more likely to have educational ___42___, and to achieve more in life, than people who grow up without them. In the study, over 160,000 adultsfrom 31 countries and regions were asked about the number of books there were in their homes when高三英语第6页共19页they were 16 years old. Then they were_ 43_ in literacy, numeracy (计算能力) and information communication technology.The research shows that the number of books for each household 44_ greatlyfrom country to country.45 _, the number of books is27 in Turkey, 143 in the UK and 218 in Estonia. But "the total46_ of home library size on literacy are largeeverywhere” , according to researcher Joann Sikorn of AustralianNational Universityina paper based on the study.The researcher found that people who had lower levels of secondary educationbut had a large number of books at home got a(n)_47_ score as universitygraduates who grew up with only a few books.The Guardian newspaper commented that “bookish adolescence makes for a good deal of educational advantage.""Reading books in a young age can_ 48 shortcomings not only in adultliteracy but also numeracy; its impacts are __49 to additional years of education."Sikora told Science Alert.Apart from the educational benefits, growing up with more books also plays animportant role in adult success."Early_50_ to books in the parental home matters because books are anessential part of routines and practices that 5l_ lifelong cognitive (认知的)abilities", Sikora told Science Alert. These abilities are_ 52_ to future development.Without doubt, the fact that we are moving toward a digital era could_ 53_ theimportance of printed books. For now, 54_, "they still seem to_ 55_ quite alarge positive benefit, which shows no sign of decreasing", researchers wrote in thepaper.41. A. simply B. definitely C. generally D. randomly42 A. backgrounds B. advantages C. requirements D. development43. A. estimated B. examined C. tested D. investigated44 A. changes B. alters C. shifts D. varies45 A By comparison B. As a result C. For instance D. In total高三英语第7页共19页46. A. effects B. expenses C. inputs D. contributions47. A. higher B. lower C. average D. similar48. A. make up for B break up with C. liveup to D. catch up with49 A. senior B. essential C. equal D. familiar50. A. addition B. engagementC. devotion D. exposure51. A. prove B. demonstrate C. enhance D. acquire52. A. relevant B. crucial C. opposite D. compulsory53. A. weaken B. highlight C. overestimate D. reflect54. A. therefore B. however C otherwise D. likewise55. A. enjoy B. obtain C. maintain D. reduceSection BDirections:Read the following three passages. Each passage is followed by severalquestions or unfinished statements. For each of them there are four choices marked A, B, C and D. Choose the one that fits best according to the information given in thepassage you have just read.(A)"Don't tell anyone". We hear these words when someone tells a secret to us. But it can be hard to keep a secret. We're often tempted to “spill the beans”, even if weregret it later According to Asim Shah, professor in the Menninger Department of Psychiatryand Behavioral Sciences at Baylor College of Medicine, US, keeping a secret may well “become a burden". This is because people often have an "obsessive (无法摆脱的)and anxious urge to share it with someone".An earlier study, led by Anita E. Kelly, a scientist at the University of NotreDame, US, suggested that keeping a secret could cause stress. People entrusted with secrets can suffer from depression, anxiety, and body aches, reported the Daily Mail.高三英语第8页共19页But with secrets so often getting out, why do people share them at all? Shahexplained that people often feel that it will help them keep a person as a friend.Another reason people share secrets is guilt over keeping it from someone close tothem. A sense of distrust can develop when people who are close do not share it with each other. "Keeping or sharing secrets often puts people in a position of eithergaining or losing the trust of someone." according to Shah.He added that talkative people could let secrets slip out. But this doesn't meanthat it is a good idea only to share secrets with quiet people. A quiet person may besomeone who keeps everything inside. To tell such a person a secret may cause themstress, and make them talk about the secret.Shah said that to judge whether to tell someone a secret, you'd better put yourselfin their position. Think about how you would feel to be told that you mustn't give the information away. Shah also recommended that if you accidentally give up someone'ssecret you should come clean about it. Let the person know that their secret isn't so secret anymore.56. The underlined phrase "spill the bean" is closest in meaning to________.A. let out a secretB. tell the truthC. eat our wordsD. take gossip57. A person who is entrusted with a secret ________.A. is oft often obsessed with a certain threatB. often would rather not have been told about itC. usually has a strong desire to keep it until deathD. may suffer from physical or psychological problems58. What can we learn from the passage?A. Quiet people are more likely to keep the secrets to themselves.B. Sharing secrets helps establish friendship or get over the sense of guilt.C. It's better to inform others of the chances of your leaking secrets beforehand.D. Putting yourself in others' shoes helps realize the difficulty of keeping secrets.高三英语第9页共19页59. What‟s the best title for the passage?A. Walls have ears.B. Still tongues make wise heads.C. A word spoken is past recalling.D. Every wall has a crack.(B)Does the thought of cooking an entire Christmas dinner for friends and family make you shudder? Our cookery writer Sophie Godwin has created the ultimate simplified menu for a stress-free day. With a range of time-saving techniques and showstopping flavour twists, this is the only festive menu you'll ever need. Embrace the art of the shortcut!Y our timeplan to eat at 2pmView and print our at-a-glance infographic time plan.·11am Take your turkey out of the fridge.·11.30am Heat the oven.Prepare the rosemary butter and rub underneath the turkey skin.·12pm Put the turkey in the oven to roast.·12.15pm Boil the potatoes and root vegetables. Make the harissa & orange marmalade glaze.Chop the ingredients for the stuffing sprouts.·1pm Baste the turkey, pour in the white wine and nestle cabbage wedges around the bird.Return to the oven.高三英语第10页共19页·1.10pm Prepare the separate ingredients for the mackerel starter.·1.25pm Smash the roasties and put them in the oven.·1.30pm Check the turkey—take out to rest if the internal temperature has reached 65C.Return the cabbage to the oven to finish cooking.·1.35pm Toss the roasted roots in the harissa glaze,then put in the oven.·1.40 pm Make the gravy, cook the sprouts and keep warm.·2 pm Sit down to the starter, with everything for your lunch ready to go.·The d essert takes just 10 minutes to assemble ,so you can do it once you‟ve enjoyed the ma in course.Buy your ingredientsWe‟ve pre-loaded your shopping list so that you can quickly buy all your ingredients for this menu in one go. Just click below to be taken to your shopping list, where you can buy all your ingredients from your preferred supermarket, and remove any ingredients as needed, and even print the list, to use direct when shopping.(Serves 6)·Add to shopping ListThe above shopping list is powered by Whisk. Please check your list thoroughly before purchasing. If the same items appear across different recipes they will not automatically combine in your list and you‟ll need to do this manually. Please als o check the products that have been selected via the Whisk program, as you may prefer a different brand from that listed.60.Which section CAN‟T we find on the website?A. Classic cocktailsB. V egetarian Christmas高三英语第11页共19页C. Roast calculatorD. Wealth management61.How long does it take to toast the turkey?A.1 hourB.2 hoursC.1.5 hoursD.2.5 hours62.Which of the following is True?A. The entire Christmas dinner is composed of a roasted turkey and dessert.B. The automatically-generated shopping list is just for user‟s reference.C. Most of the ingredients on the shopping list come from the same brand.D. Y ou can buy all your ingredients online through Whisky by one click.（C）Y ou‟re walking down a quiet street and suddenly you hear some footsteps .Undoubtedly ,it means that there‟s someone around. But have you ever wonder why it occurs to us that it‟s someone else‟s footsteps , not ours?According to a new study published in the journal Nature in September, this phenomenon arises from a function in our brain to ignore the noise we make ourselves.In order to explore how our brain does this, a group of scientists carried out an experiment with mice at Duke University. The research entered on an intuition(直觉)---that we are usually unaware of the sound of our own footsteps ---as a vehicle for understanding larger neural(神经系统的) phenomena; how this behavior reveals the ability to monitor, recognize, and remember the sound of one‟s own movements in r elation to those of their larger environments.In the experiment, research controlled the sounds of a group of mice could hear, reported Science Daily. During the first several days, the mice would hear the same sound each time they took a step. This was just like “running on a tiny piano with each key playing exactly the same note”, sen ior study author Richard Mooney, a professor of neurobiology at Duke University, told Live Science.Scientists found that their auditory cortex (听觉皮层) – the area of the brain that processes sound – became active at first but decreased its response to the sound after two or three minutes高三英语第12页共19页when the mice became familiar with it.“ It‟s almost like they were wearing special headphones that could filter(过滤)out the sound of their own movements.” David Schneider, an assistant professor at the Center for Neutral Sci ence at New Y ork University, told HuffPost.But once the sound changed, their auditory cortex became active again. This suggests that the “sensory filter” in a mouse‟s brain could help it detect new sounds or abnormal noise in the environment easily after tuning out familiar sounds.“For mice, this is really important,” said Schneider. “They are prey animals, so they really need to be able to listen for a cat creeping up on them, even when they‟re walking and making noise.Being able to ignore the sounds of one's own movements is likely important for humans as well. But the ability to predict the sounds of our own actions is also important for more complex human behaviors such as speaking or playing an instrument."When we learn to speak or to play music, we predict what sounds we are going to hear – such as when we prepare to strike keys on a piano–and we compare this to what we actually hear, "explains Schneider. “We use mismatches between expectation and experience to change how we play – and we get bett er over time because our brain is trying to minimize these errors.”63. What can be discovered about mice in the experiment?A. Their brain responds inactively to the familiar soundsB. They are able to detect sounds other animals don‟t notice.C. They cannot identify different sounds except their own footsteps.D. Different areas of their brain are responsible for different sounds.64. What‟s the function of the sensory filter?A. Getting used to abnormal or unfamiliar sounds.B. Ignoring the sounds made by our companions.C. Identifying the sounds from a larger environment高三英语第13页共19页D. Being sensitive to the sounds of our own movement.65. Why can a good symphony conductor immediately recognize it when a wrong note is played?A. He has the ability to match the wrong note with the instrument player.B. He has an intuition that he should ignore the sound of his own movement.C. He has a low expectation and knows where players are likely to make errors.D. He has a good prediction of how each note should be played in the orchestra.66. What can be inferred from thepassage?A. Noise-filtering ability ensures us a quiet and undisturbed environment.B. The ability to ignore familiar noises helps to detect potential dangers.C. The activeness of auditory cortex determines our activity performance.D. Sound-predicting ability seems not so important for humans as for animals.Section CDirections:Read the passage carefully. Fill in each blank with a proper sentence given in the box. Each sentence can be used only once. Note that there are two more sentences than you need.高三英语第14页共19页Building a lasting social relationshipWe all know that friends are special people who we share our lives with, and who share their lives with us in return. But seeking friends and keeping the friendship going are never easy.According to research recently published in the Journal of Social and Personal Relationships, the key is to use "we-talk".Led by University of California psychologist Megan Robins and her colleagues, the researchers reviewed and analyzed 30 different studies involving over 5, 000participants.________67________.The word "we" moves people from an individual position into a partnership, which makes us more interdependent."__________68____________.Word use is a window into what people are thinking and feeling without asking them." Robbins told Science Daily.___________69___________. The primary point is that interdependence may bring about supportive and relationship-centered behaviors and positive perceptions of the partner--especially important in times of stress and disagreement.Contrary to "we-talk", there is "I-talk", which refers to the frequent use of the first-person singular pronouns, such as "I", "me" and "mine", when writing or speaking. Earlier this year, researcher analyzed a set of data that came from 4,7000 people in Germany and the US.___________70___________. As you can see from the two studies, too much "I-talk" can make you feel depressed. But "we-talk" can encourage you to become more positive and create a chain effect of healthy interdependence with others.So next time you are talking to a friend, try using more "we-talk". Y ou may find yourself feeling more positive--and the effect it will have on your friend will be positive as well.高三英语第15页共19页IV. Summary WritingDirections: Read the following passage. Summarize the main idea and the main point(s) of the passage in no more than 60 words. Use your own words as far as possible.When we wake up feeling sleepy and with dark circles under eyes, many of us of ten think:” I‟m going to go to bed earlier tomorrow!” But however determined we are, chances are that we don‟t stick to our promise. This behavior is called “bedtime procrastination（拖延症）”.According to a study carried out by a group of health psychologists at Utrecht University in the Netherlands in 2014, bedtime procrastination is a common problem. In their study, 53 percent of the 2,400 participants said they didn‟t follow their sleep schedule, delaying it at least twice a week.It‟s found that they delayed bedtime not because they liked to stay up late, but they couldn‟t stop doing other unimportant things, which were keeping them up in the first place.“People who generally have trouble resisting temptations and sticking to their intentions are more like ly to delay going to bed.” Floor Kroese, a psychologist at Utrecht University, further explained to HuffPost.Y et, according to scientists, lack of self-control is not the only thing to blame. Our body clock also plays an important role when it comes to bed time. In order to check the influence of the body clock on sleep, psychologists at Ulm University in Germany studied the sleep patterns of 108 people in February. It was found that those who get up late are more likely to postpone their bedtime than those who wake early every morning.“The intention to go to bed earlier is not enough,” Jane Kuhnel, a psychologist at Ulm University, concluded in Popular Science. “Biological processes need to support this intention.”People always think that bedtime proc rastination isn‟t a big problem, but as Kroese told Popular Science, “the choices we make that affect out sleep could turn out to be pretty important for our health.”V. T ranslationDirections:Translate the following sentences into English, using the words given in the brackets.高三英语第16页共19页72.无论幸福的定义如何变化，人们永远不会放弃追求幸福的权利。
杨浦区2018学年度第一学期高三年级学业质量调研物理试卷答案ok
杨浦区2018学年度第一学期高中等级考质量调研物理学科参考答案及评分标准一．选择题（共40分。
第1-8小题，每小题3分，第9-12小题，每小题4分。
每小题只有一个正确答案。
） 题号123456789101112 答案 A D D B D A A D D D D A二．填空题（本大题有2小题，每小题4分，每空格2分，共20分）13．能量，1.60×10-19J ； 14．法拉第，甲； 15．170.9，85.4(g 取9.8m/s 2)； 或者173.2,86.6(g 取10m/s 2)； 16．0.785，0.08； 17．R P 03，P 0.三．综合题（本大题有3小题，18题12分、19题12分，20题16分共40分）18．（1）①、③（2分） 放置导电纸时有导电物质的一面应向上；应使用电压传感器（2分） （2）a 点（2分） （3）电压（2分） f 点（2分）向右移动（2分）19.（12分） 解：（1）设小球在M 点的速度为v 1，小球由高度为h 处下滑至M 点过程中只有重力做功，机械能守恒，取地面为零势能面，则：2121mv mgh =∴gR R g gh v 55.2221=⋅== ---------2分 设小球在N 点的速度为v 2 ，由机械能守恒定律，得R mg mv mgh 22122+=……①，---------2分将h =2.5R 代入①式，可得gR v =2； ---------1分 ；N 点的向心力mg Rvm F ==22向，所以重力完全充当向心力，小球对轨道的压力为0。
---------1分 （2）由机械能守恒定律：R mg E mgh k 2+=∴R mg mgh E k 2-=……②， 可知E k - h 图象是一条截距为-mg 2R ，斜率为mg 的倾斜直线。
---------2分 当h ＜2.5R 时，小球能量不足以到达最高点，故对最高点讨论动能无意义； h=2.5R 时，mgR mv E k 212122==图中A （2.5，0.5） h=5R 时，代入②式，mgR E k 3= 图中B （5，3） ---------2分 连接AB 作出E K —h 变化图象如图所示． --------2分 答：（1）小球通过M 点时的速度大小为gR v 51=，通过N 点时对轨道的压力为0；（2）E K —h 变化图象如图所示．mgaF 安20.（16分）解：（1）由右手定则可知：感应电流方向为顺时针． ---------2分 （2）当正方形框加速度为零时，速度最大， ---------1分---------1分由受力图：安F mg =……① ---------1分由于两条边在磁场中受力，BIx F 2=安……②---------1分线框中电流R BxV R E I m2==……③ ---------1分 导体的电阻AxR 4ρ=……④ ---------1分由①②③④三式可得：XAB mgRV m 2= ---------2分（3）当线框下落加速为a 时，受力图如右：--------1分由牛顿第二定律可得：ma F mg =-安--------1分，将g a 31=代入，可得mg F 32=……⑤ ---------1分 由前分析可知，BIx F 2=安……② 由②⑤可得Bx mg I 3=，---------1分 ；而导体电阻AxR 4ρ=， 所以方框的发热功率为：R I P 2==xAB g m 22294ρ． ---------2分答：（1）顺时针 （2）方框最大速度XAB mgRV m 2=（3）方框发热功率xAB g m P 22294ρ=mga =0F 安。
杨浦区2018学年度第一学期期末质量调研参考答案及评分标准(1227)
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（20）分析（a）(b)(c)得：用（斜向上）大小相同的拉力作用在同一物体上，物体静止时，拉力与水平方向夹角改变，物体对水平面压力改变。
/分析（b）和（d）可知：用（斜向上）的拉力作用在同一物体上，物体静止时，拉力与水平方向夹角相同，拉力大小改变，物体对水平面压力大小改变。
（21）物体质量/物体重力
杨浦区2018学年度第一学期期末质量调研参考答案及评分标准
一、选择题（每题2分，共20分）
1. C。2. A。3. C。4. B。5. C。6.B。7. B。8.D。9. A。10.B。
二、填空题（共25分）
11.（1）托里拆利；（2）奥斯特；（3）磁感线。
12.（4）220；（5）并联；（6）变小。
29.计算过程：
（12）R滑大=U滑大/I=6伏/ 0.3安=20欧
（13）6伏+Ux=4.5伏+2Ux，Ux=1.5伏
U总=Ux+6伏=7.5伏
（14）第一次：Rx=Ux/I=1.5伏/0.3安=5欧
第二次：Rx=Ux/I=3伏/0.6安=5欧
第三次：Rx=Ux/I=7.5伏/1.4安=5.4欧
平均值Rx=5.1欧
30.（15）I滑随着U滑增加而较小。
（16）I滑变化量与U滑变化量成正比。
（17）U滑变化量与I滑变化量的比值。
（18）串联电路中，U滑变化量与I滑变化量的比值等于定值电阻阻值。
（19）U总=U滑+I滑R定=U’滑+I’滑R定
I滑R定-I’滑R定=U’滑-U滑
R定=（U’滑-U滑）/（I滑-I’滑）合理即给分
杨浦区2018学年度第一学期高三年级期中质量调研
杨浦区2018学年度第一学期高三年級期中质量调研语文学科试卷（答案做在答题卡上）（满分150分，时间150分钟）2018年11月一.积累应用（10分）1．根据提示填空：（5分）（1）三山半落青天外，。
（李白《登金陵凤凰台》）（2）雾失楼台，月迷津渡，。
（秦观《·郴州旅含》（3）《劝学》中用“，”两句来比喻君子通过广泛学习不断反省，从而完善自我。
2．按要求选择。
（5分）（1）小张如愿考上了清华大学。
以下各句中，哪一项最适合用来恭喜他？（）（2分）A．踏破铁鞋无觅处，得来全不费功夫。
B．春风得意马蹄疾，一日看尽长安花。
C．人生得意须尽欢，莫使金樽空对月。
D．问渠哪得清如许，为有源头活水来。
（2）将下列编号的语句依次填入空白处，语意连贯的一项是（）（3分）艺术与娱乐的享受通常是被动的，既不像工作活动，也不像运动或园艺等非工作的休闲活动，。
当观看一部电影时，我们会与其他观众、包括那些在不同的时间、地点欣赏同一部电影的观众一起哄堂大笑，这表明我们自己与他人一样，对某一特定的语词或行动多少会有所回应。
与此类似，人们欣赏心仪已久的大师名画时内心感觉到的敬畏和震撼，与其他曾经在昨天、甚至百年前看到这幅画的人有着同样的共鸣。
①而在其中，社会成员之间可以通过意义共享和相互理解而实现沟通。
②人们需要做的仅仅是接收影像、声音、运动、印象和情感，然后做出回应即可。
③艺术与娱乐都属于这样一种文化层次。
④文化会耗费我们的心智，但是不需耗费用脑力工作时付出的劳力或责任。
⑤在其中，我们实际上并没有花精力或投入体力，因此“文化源于脑力劳动与体力劳动的彻底分离”。
A．③④①②B．③④②①C．②⑤④③①D．②③⑤①④二.阅读（70分）（一）阅读下文，完成第3一7题。
（16分）数媒时代的“读者”衰微与“用户”兴起（1）“读者”的豪微与“用户”的兴起，是数堞时代接受主体的一个深刻变化。
（2）这一变化的信息在最直接面对“读者”的图书馆事业中有着更明晰的提示。
上海市杨浦区2018-2019学年度第一学期高中等级考模拟质量调研物理试题
杨浦区2018学年度第一学期高中等级考模拟质量调研
高三年级物理学科试卷
一、选择题（共40分。
第1-8小题，每小题3分，第9-12小题，每小题4分。
每小题只有一个正确答案。
）
1．下列用来定量描述磁场强弱和方向的是
A．磁感应强度．B．磁通量．C．安培力．D．磁感线．
2．20世纪中叶以后，移动电话快速发展．移动电话机
A．既能发射电磁波，也能接收电磁波．
B．只能发射电磁波，不能接收电磁波．
C．不能发射电磁波，只能接收电磁波．
D．既不能发射电磁波，也不能接收电磁波．
3．我国《道路交通安全法》中规定：各种小型车辆前排乘坐的人（包括司机）必须系好安全带．这是因为
A．系好安全带可以减小惯性．
B．系好安全带可以防止因人的惯性而造成的伤害．
C．系好安全带可以防止因车的惯性而造成的伤害．
D．是否系好安全带对人和车的惯性没有影响．
4．电源电动势反映了电源把其它形式的能转化为电能的本领，下列关于电动势的说法中正确的是
A．电动势是一种非静电力．
B．电动势越大表明电源储存的电能越多．
C．电动势就是闭合电路中电源两端的电压．
D．电动势由电源中非静电力的特性决定，跟其体积、外电路无关．
5．如图所示，在两块相同的竖直木板之间，有质量均为m的4块相同的砖，用两个大小均为F的水平力压木板，使砖块静止不动，则第2块砖对第3块砖的摩擦力大小是。
高三政治-上海市杨浦区2018届高三上学期期末质量调研(
杨浦区2018学年第一学期高三学科测试政治试卷2018年 1月考生注意:1．考试时间120分钟，试卷满分150分。
2．本考试设试卷和答题纸两部分，试卷包括试题与答题要求。
所有答题必须写在答题纸上，做在试卷上一律不得分。
3．答题前，务必在答题纸上填写准考证号和姓名。
交卷时需交答题纸，试卷不用上交。
4．答题纸与试卷在试题编号上是一一对应的，答题时应特别注意，不能错位。
一、单项选择题（共42分，每题2分。
每题只能选一个选项）1．我们党和国家历来重视人民军队建设，邓小平同志就曾经指出，军队建设的所有领域、所有方面，都要建立制度，制定法规、纳入法制轨道。
这主要强调军队的A．信息化建设B．现代化建设C．正规化建设D．革命化建设2．民族区域自治制度是我国基本政治制度。
在我国民族区域自治地方的自治机关①是最高权力机关②有权依照当地民族的特点制定自治条例③自主地管理本地方的财政、经济、文化、教育事业④有独立的立法权和设置军队的权利A．①② B. ②③ C. ③④ D. ②④3．近年来，各地政府为促进“以创业带动就业”，从工商登记、资金筹措、技能培训、经营用地等方面对农民工返乡创业予以大力支持。
各地政府的做法履行了①组织和领导社会主义现代化建设的职能②保障人民民主，保卫社会主义建设的职能③组织社会公共服务的职能④协调人民内部利益关系的职能A. ①②③B. ①③④C. ①②④D. ②③④4．我国人大代表在依法行使代表职权的同时，必须依法履行代表的义务。
下列属于人大代表义务的是A．参加本级人民代表大会的选举B．保守国家的机密C．参加本级人民代表大会的表决D．提议权5．依法执政是中国共产党执政的基本方式。
下列能直接体现这一基本方式的是①全党开展深入学习实践科学发展观活动②党的主张经过法定程序上升为国家意志③党支持人民代表大会依法履行职能④民主党派发挥政治协商和民主监督作用A. ①②B. ③④C. ①④D. ②③6．我国的全国人大代表，工人、农民、知识分子、解放军和妇女、归国华侨等都有适当的比例，人口再少的民族也至少有一名代表。
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杨浦区2018学年度第一学期高中等级考模拟质量调研
高三年级物理学科试卷2018年12月
考生注意：
1．试卷满分100分，考试时间60分钟．
2．本考试分设试卷和答题纸．试卷包括三部分，第一部分为选择题，第二部分为填空题，第三部分为综台题．
3．答题前，务必在答题纸上填写姓名、报名号、考场号和座位号，并将核对后的条形码贴在指定位置上．作答必须涂或写在答题纸上，在试卷上作答一律不得分．第一部分的作答必须涂在答题纸上相应的区域，第二、三部分的作答必须写在答题纸上与试卷题号对应的位置．
一、选择题（共40分。
第1-8小题，每小题3分，第9-12小题，每小题4分．每小题只有一个正确答案．）
1．在物理学中，为了研究问题的方便，有时需要突出问题的主要方面，忽略次要因素，建立理想化的“物理模型”．下列不属于理想模型的是
(A) 力的合成．(B) 质点．(C) 点电荷．(D) 匀速直线运动．
2．关于静电场，下列结论普遍成立的是
(A) 电场中任意两点之间的电势差只与这两点的场强有关．
(B) 电场强度大的地方电势高，电场强度小的地方电势低．
(C) 将正点电荷从场强为零的一点移动到场强为零的另一点，电场力做功为零．
(D) 在正电荷或负电荷产生的静电场中，场强方向都指向电势降低最快的方向．
3．如图金属圆环P沿着速度v方向运动，且P中通以如图
所示电流，则眼睛看到的金属环L和R的电流方向是
(A) 都是顺时针．(B) 都是逆时针．
(C) L顺时针，R逆时针．(D) L逆时针，R顺时针．
高中等级考质量调研物理学科试卷保留版权第1 页（共7页）
杨浦区高中等级考质量调研物理学科试卷 保留版权 第 2 页（共7 页）
4．如图所示，正中有一O 点是水面上一波源，实、虚线分别表示该时刻的波峰、波谷，A 是挡板，B 是小孔，经过一段时间，水面上的波形发生明显衍射的区域是 (A) 阴影Ⅰ区域． (B) 阴影Ⅱ区域．
(C) 阴影Ⅰ、Ⅱ区． (D) 无明显衍射区域．
5．应用物理知识分析生活中的常见现象，可以使物理学习更加深入．例如平伸手掌托起物体，由静止开始竖直向上运动，直至将物体抛出．对此现象分析正确的是 (A) 手托物体向上运动的过程中，物体始终处于超重状态． (B) 手托物体向上运动的过程中，物体始终处于失重状态． (C) 在物体离开手的瞬间，物体的加速度大于重力加速度． (D) 在物体离开手的瞬间，手的加速度大于重力加速度．
6．质量为m 的物体用轻绳AB 悬挂于天花板上．用水平向左的力F 缓慢拉动绳上的结点O ，如图所示．用T 表示绳OA 段拉力的大小，在O 点向左移动的过程中 (A) F 逐渐变大，T 逐渐变大． (B) F 逐渐变大，T 逐渐变小．
(C) F 逐渐变小，T 逐渐变大． (D) F 逐渐变小，T 逐渐变小．
7．恒星在均匀地向四周辐射能量的过程中，质量缓慢减小，围绕恒星运动的小行星可近似看成在做圆周运动．则经过足够长的时间后，小行星运动的 (A) 半径变大．
(B) 速率变大．
(C) 角速度变大． (D) 加速度变大．
O
杨浦区高中等级考质量调研物理学科试卷 保留版权 第 3 页（共7 页）
8.以不同初速度将两个物体同时竖直向上抛出并开始计时，一个物体所受空气阻力可忽略，另一物体所受空气阻力大小与物体速率成正比，下列用虚线和实线描述两物体运动的v ﹣t 图象可能正确的是
(A) (B) (C) (D)
9．一列横波沿水平放置的弹性绳向右传播，绳上两质点A 、B 的平衡位置相距4
3
波长，B 位于A 右方．t 时刻A 位于平衡位置上方且向上运动，再经过
4
1
周期，B 位于平衡位置 (A) 上方且向上运动． (B)上方且向下运动．
(C) 下方且向上运动． (D)下方且向下运动．
10．如图，表面光滑的固定斜面顶端安装一定滑轮，质量不同的小物块A 、B 用轻绳连接并跨过滑轮（不计滑轮的质量和摩擦）．初始时刻，A 、B 处于同一高度并恰好处于静止状态．剪断轻绳后A 下落、B 沿斜面下滑，则从剪断轻绳到物块着地，两物块 (A) 速率的变化量不同．
(B) 机械能的变化量不同．
(C) 重力势能的变化量相同． (D) 重力做功的平均功率相同．
11．如图，空间某区域中有一匀强磁场，磁感应强度方向水平，且垂直于纸面向里，磁场上边界b 和下边界d 水平．在竖直面内有一矩形金属线圈，线圈上下边的距离很短．线圈从水平面a 开始下落，下落过程中线圈下边始终保持水平．已知磁场上下边界之间的距离大于水平面a 、b 之间的距离．若线圈下边刚通过水平面b 、c
（位于磁场中）
杨浦区高中等级考质量调研物理学科试卷 保留版权 第 4 页（共7 页）
和d 时，线圈所受到的磁场力的大小分别为F b 、F c 和F d ，则 (A) F d ＞F c ＞F b ． (B) F c ＜F d ＜F b ．
(C) F c ＞F b ＞F d ． (D) F c ＜F b ＜F d ．
12．在城市建设施工中，经常需要确定地下金属管线的位置，如图所示。
有一种探测方法是，首先给金属长直管线通上电流，再用可以测量磁场强弱、方向的仪器进行以下操作：①用测量仪在金属管线附近的水平地面上找到磁感应强度最强的某点，记为a ；②在a 点附近的
地面上，找到与a 点磁感应强度相同的若干点，将这些点连成直线EF ；③在地面上过a 点垂直于EF 的直线上，找到磁场方向与地面夹角为45°的b 、c 两点，测得b 、c 两点距离为L ．由此可确定金属管线
(A) 平行于EF ，深度为2L
． (B) 平行于EF ，深度为L ． (C) 垂直于EF ，深度为2
L
．
(D) 垂直于EF ，深度为L ．
二、填空题（共20分．每小题4分．）
13．电子伏特是 （“能量”或“电压”）的单位，1eV= （单位请写国际单位）．
14．电磁感应现象是英国物理学家 首先发现的．探究这个现象应选用如图中 （填“甲”或“乙”）所示的装置进行实验．
15．如图所示的装置以加速度为5m/s 2竖直上升时，装置中质量为10kg 的小球对斜面的压力为 N ；对竖直墙的压力为 N ．
金属管线
I
水平地面
a
杨浦区高中等级考质量调研物理学科试卷 保留版权 第 5 页（共7 页）
16．如图，在半径为2.5m 的光滑圆环上切下一小段圆弧，放置于竖直平面内，两端点距最低点高度差H 为1cm ．将小环置于圆弧端点并从静止释放，小环运动到最低点所需的最短时间为 s ，在最低点处的加速度为 m/s 2．（取g=10m/s 2）
17．如图，电路中三个电阻R l 、R 2和R 3的阻值分别为R 、2R 和4R ．当电键S 1断开、S 2闭合时，电源输出功率为P 0；当S 1闭合、S 2断开时，电源输出功率也为P 0．则电源电动势为 ；当S 1、S 2都断开时，电源的总功率为 ．
三、综合题（共40分）
注意：第19、20题在列式计算、逻辑推理以及回答问题过程中，要求给出必要的图示、文字说明、公式、演算等．
18.（12分）电场中等势线的描绘的实验装置如图所示． （1）一个学生在做此实验时的主要准备步骤如下：
①在木板上依次铺放白纸、复写纸、导电纸各一张，导电纸有导电物质的一面朝下；
②导电纸上平放着跟它接触良好的两个圆柱形电极，两电极分别与电源的两极相连； ③从一个电流传感器的两个接线柱引出两支探针；
④在导电纸上画出两个电极的连线，在连线上选取间距大致相等的5个点作基准点，并用探针把它们的位置压印在白纸上．
以上准备步骤中，错误的有 （写序号），应改为 ． （2）在图的a 、b 、c 、d 、e 五个基准点中，电势最高的点是 点．
（3）若传感器的两个接线柱分别接触图中d 、f 两点（f 、d 连线和A 、B 连线垂直）时，d 、f 两点______大于零，则传感器的“+”接线柱接在
点．要使传感器示数为零，应将接
f的探针（填“向左”或“向右”）移动．
19．（12分）游乐场的过山车可以底朝上在圆轨道上运行，游客却不会掉下来，我们把这种情况抽象为如图1的模型：圆弧轨道半径为R，下端与竖直圆轨道相接于M点，使小球从弧形轨道上距离M点竖直高度为h处无初速滚下，小球进入圆轨道下端后沿圆轨道运动．实验发现，只要h大于一定值，小球就可以顺利通过圆轨道的最高点N，不考虑摩擦等阻力．
图1 图2
（1）若h=2.5R，求质量为m的小球通过M点时的速度大小和通过N点时对轨道的压力；（2）若改变h的大小，小球通过最高点N时的动能E K也随之发生变化，试通过
计算在方格纸上作出E K随h的变化关系图象（作在答题卡上）．
杨浦区高中等级考质量调研物理学科试卷保留版权第 6 页（共7 页）
杨浦区高中等级考质量调研物理学科试卷 保留版权 第 7 页（共7 页）
20．（16分）质量为m ，电阻率为ρ，横截面为A 的均匀薄金属条围成边长为x 的闭合正方形框abb´a´．如图所示，金属方框置于磁极的狭缝间，方框平面与磁场方向平行．设匀强磁场仅存在于两个相对磁极之间，其他地方的磁场忽略不计．可认为方框的aa´边和bb´边都处在磁感应强度大小为B 的匀强磁场中．方框从静止开始释放，其平面在下落过程中保持水平（不计空气阻力，导体的电阻S
L
R ρ=，其中ρ为导体的电阻率，L 为导体的长度，S 为导体的横截面．）
（1）请判断图2中感应电流的方向；
（2）若方框未到底端前速度已达最大，求方框的最大速度v m ； （3）当方框下落的加速度为g 3
1
时，求方框的发热功率P ．
x
x。