【附加15套高考模拟】【全国百强校】上海市延安中学2020届高三第二学期适应性考试(三模)数学(文)试题含
2020届上海市延安中学高三英语模拟试卷及参考答案

2020届上海市延安中学高三英语模拟试卷及参考答案第一部分阅读(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项AMany workers have had no choice but to adapt to working from home in recent months since offices shut down due to the COVID-19 pandemic (新冠疫情). And the noisy situation and endless housework may result in a terrible emotion. A new option is waiting foryou. That is WFH: work from a hotel.Hotel FigueroA special program titled Work Perks aims to reposition some of 94-year-old Hotel Figuero’s 268 rooms as day-use offices.According to Managing Director Connie Wang, the set-up launched in June and is a great opportunity to get out of their houses with high-speed Wi-Fi, unlimited printing privileges and free parking. The 350-square-foot rooms sell for $ 129 per day, with an option to extend to an overnight stay for an additional $ 20.The WytheA boutique hotel in Brooklyn. The hotel recently announced a partnership with co-working office space company Industrious through which it is recycling 13 second-story guest rooms to serve as offices for up to four people.Each of the rooms has a small outdoor platform, and dogs are welcome. Pricing starts at $ 200 and goes up to $ 275, depending on how many people use the space.The SawyerThe Sawyer, in Sacramento, California, is offering pool cabanas (更衣室) for use as outdoor offices, complete with fast Wi-Fi, free parking and catered lunch for $ 150 per day.HotelsByDayYannis Moati founded HotelsByDay back in 2015. That company has grown to include more than 1,500 hotels, and has seen a significant increase in the number of inquiries for day-use bookings lately.Moati said the current situation will force hotels to upgrade themselves to stay alive, and he predicted that offering rooms for day-use only is one of the directions they will go.1.How much should one pay for a 24-hour stay in Hotel Figuero?A.$ 129.B.$ 149.C.$ 150.D.$ 200.2.Which hotel allows pets in?A.The Wythe.B.The Sawyer.C.HotelsByDay.D.Hotel Figuero.3.What do we know about Yannis Moati?A.He started a program titledWork Perks.B.He has upgraded at least 1,500 rooms.C.He usually predicts everything correctly.D.He is optimistic about the WFH trend.BSlowing down was the last thing on Elaine Schaefer's mind when she turned 70 last year. She'd enjoyed an ambitious travel schedule for the previous decade. She didn't feel too old to travel.Yet many people are asking that slightly embarrassing question: Can you be too old to travel? The travel industry has already responded. Try renting a car inEurope, for example. InCroatia, Schaefer wouldn't be able to this year, because the maximum age is 70. Insurance companies require higher rates; tour operators limit certain activities. That feels like a " no" for many travelers.Definitely some folks should think twice before traveling, but not only based on their age. It's their level of fitness, says Kirsten Veldman, a former tour guide who now edits a retirement blog. She recalls a 93-year-old who was disabled and traveling alone on aCaribbeantour. "You can't expect to ask a tour leader to be there for you 24/7 for medical care. " she says. "Tour guides don't have the time, skills, and knowledge for it. So, in this case, my advice is: he shouldn't have traveled with us in this situation. "But some tour operators serve older travelers. For example, Grand Circle Travel started in 1958 to serve senior members. “We have travelers into their 80s and even 90s. Some travel as a couple and some alone,” says company spokeswoman Ann Shannon. “We have no age limit.”If you ask travel experts, they'll tell you that age is just a number. It's a question of physical, and to a certain extent, mental ability. "Many of our travelers are retired, focused on keeping their good health, and are experienced travelers who have a good idea of what to expect, "says Sara Baer-Sinnott, president of Oldways, a food and nutrition nonprofit that operates tours. "Someone in their 40's may struggle more than someone in their 80s. "4. What is expected if Schaefer travels inCroatiathis year?A. She can rent a car to go around.B. She has to pay more insurance fees.C. She can join in all kinds of activities.D. She will receive 24/7 medical care.5. What caused Veldman to disapprove of the 93-year-old's traveling?A. His old age.B. His lack of money.C. His poor health.D. His in sociable personality.6. What do we know about Grand Circle Travel?A. It is a non-profit traveling organization.B. It offers service to a wide range of travelers.C. It has a history of more than seven decades.D. Its main customers are senior travelers.7. What is the authors altitude towards traveling old?A. Opposed.B. Supportive.C. Tolerant.D. Objective.CAfter years of releasing e-readers that compete directly with Amazon’s Kindle, Rakuten Kobo’s latest device offers something totally different: theability to draw and write directly on the screen.With a large 10.3-inch E-ink display, the Kobo Elipsa looks more like an electronic clipboard than the standard paperpack-sized e-reader. Although the ability to write on the screen is no big deal — especially given its high price tag of $ 600 — the overall package is impressively functional.In terms of reading, the Elipsa packs just about everything you’d expect in a Kobo. You can purchase and download books from the store, read web articles you’ve saved online via Pocket, and connect to your local library to borrow e-books and magazines. It’s known that Kindle basically requires you to buy books from Amazon. Unlike Kindles, Kobos are pretty open with the formats they support; you can connect the Elipsa to a computer and transfer over any PDF books you have bought or downloaded from stores like Booktopia or Google Books.You can fill your virtual notepads with notes using brush and pen types, and export them as PDFs or images to a PC. There’s also an “advanced” notebook that can turn your writing into typed and editable text for exporting to Microsoft Word format. You can also write directly onto documents themselves, with all your word circling and underlining saved as you go to review later. This is especially handy when it comes to PDFs, as changes you make are synced(同步)automatically when you have Wi-Fi, so you can move between your Elipsa, PC and phone and keep your notes.With all that said, we can see it really appealing to e-reader fans who also tend to do a lot of work on paper. Ifyou ever print things out to mark them up, fill notepads with writing or drawing that you later have to transcribe or scan, or just wish you could write all over your library books, this could be the device for you.8. Which of the following best describes the Elipsa?A. Automatic.B. Traditional.C. Useful.D. Standard.9. How is a Kobo different from a Kindle in reading?A. A Kindle has a larger screen.B. A Kindle can support more formats.C. A Kobo supports books from various sources.D. A Kobo should be connected to local libraries.10. What does paragraph 4 mainly tell us about Kobos?A Their function in syncing. B. Their function in typing.C. Their function in writing.D. Their function in reading.11. In which section of a newspaper can the text probably be found?A. Education.B. Technology.C. Lifestyle.D. Business.DMore than 10,000 people were made homeless in Ternang when the Sungai Mas overflowed its banks yesterday after six days of continuous heavy rain.The wooden bridge across the river has been washed away. The town is cut off by flood waters. At the fifth mile, Jalan Tengkn, the water is two meters deep. It is closed to all traffic. Flooding first happened at mid-afternoon yesterday along the river banks. People trying to get to higher ground were just in time to escape the destroying of the flood. Most of the flood victims(受害者) had to leave all their things behind.The National Flood Relief(救济) Center was reported to give its help and by early evening the whole town was moved out, helped by the army, police, Red Cross Society and volunteers(志愿者).The flood victims are now housed in different simple relief centers in the nearby town of Ternang. “Everything possible is being done to help the unlucky people,” a government spokesman said, “In fact, money, food and clothing have begun to come in from public organizations and helpful people. A Disaster Relief Fund(救灾基金会) will be started as soon as possible.”According to the latest reports it is still raining heavily at Ternang. The whole town is expected to be wholly covered by the water. So far no deaths have been reported.12. This passage is probably taken from______.A. a storybookB. a textbookC. a magazineD. a newspaper13. It seems that the flood happened just because ______.A. the banks were too lowB. the wooden bridge is solid (坚固)C. the river was too narrowD. they had had wet days for some time14.From the passage we know that ______.A. though the town was flooded, you could still go there by busB. as soon as the water flowed over the banks, people began to go to higher landsC. the government and the whole society are taking great care of the flood victimsD. the flood hasn't brought a large loss to the town as nobody died in the flood15. What is the best title for this passage?A. A Big FloodB. Ternang Is destroyedC. Over 10,000 People Are HomelessD. Rescue Team Arrived第二节(共5小题;每小题2分,满分10分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。
2020届上海市延安中学高三语文模拟试题及答案

2020届上海市延安中学高三语文模拟试题及答案一、现代文阅读(36分)(一)现代文阅读I(9分)阅读下面的文字,完成下列各题。
四合院秋冬①仲夏刚过,一阵好雨,一阵凉风,四合院的秋忽焉而至了。
②到上海后,每爱七八月间回北京,常常住到旧历七月下旬再回江南,几乎像辛勤的候鸟一样,年年可以迎接燕山的新秋。
其时在宣南还有一间小房,可以容身。
虽是宿舍房子,但是平房,又是按四合院的格局盖的。
中间院子、四周房子,自然不是一家一院,而是十七八家的大杂院。
不过因为有院子,人们可以搬个小板凳在院乘凉,也可在窗前听雨,或坐房中,隔着竹帘望院中雨景……这样还多少有一些古老的四合院的情调。
③有一年近中元节时,好雨初晴,金风乍到,精神为之一爽,忽然诗兴大发,写下了一首诗并寄给平伯师。
他回信道:“奉手书并新著五言,得雨中幽趣,为欣。
视我之闷居洋楼,不知风雨者,远胜矣。
”从平伯师的信中,可以看到,从四合院中感觉到的季节情趣,在洋楼中是感觉不到的。
他现在虽然住在南沙沟高级洋房中,却也免不了怀念老君堂的古老四合院中的古槐书屋了。
④造化给人们以光泽和色彩,是公平的。
宫阙红墙,秋风黄叶,宫廷有宫廷的绚烂秋色,百姓家也有百姓家的朴实淡雅的秋色。
在那靠城根一带,或南城南下洼子一带偏僻的小胡同中,多是低低的小四合院的房子。
一进院门,种棵歪脖子枣树;北房山墙上,种两棵老倭瓜;屋门前种点喇叭花、指甲草、野菊花、草茉莉……总之,秋风一起,那可就热闹了,会把小院点缀得五光十色,那真是秋色可观。
虽在帝京,也饶有田家风味。
至于那些盛开的花花草草,喇叭花的紫花白边,指甲草的娇红带粉,野菊花的黄如金盏,草茉莉的白花红点,还有那“满架秋风扁豆花”的淡紫色的星星点点……这都是开在夏尾,盛在秋初,点缀得陋巷人家秋色如画了。
⑤当然,还有精致一点的小院。
这种院子不是北城的深宅大院,而大多在东、西城及南城。
“四破五”的南北屋,也就是四开间的宽度,盖成三正两耳的小五间,东西屋非常入浅。
2020届上海市延安中学高三语文二模试卷及参考答案

2020届上海市延安中学高三语文二模试卷及参考答案一、现代文阅读(36分)(一)现代文阅读I(9分)阅读下面的文字,完成各题。
英国学者泰勒认为:文化意识就是人们对于文化的一种自觉的能动的认识活动。
文化意识包括文化知识、文化理解、跨文化交际意识和能力等。
在文学阅读中应注意培养下列几种意识:文化的挖掘意识。
文学反映的是人学、是社会学,文学作品中蕴含着丰厚的人类社会文化知识。
读周作人那些以“平和冲淡”见称于世的美文,我们读到的不仅是恬淡从容、庄谐并出的风格,更重要的是了解了今人古籍、宇宙昆虫乃至故乡野菜、北京茶食的文化知识;读巴尔扎克的作品,我们看到的不仅是高老头悲苦的命运,而且体察到了当时封建贵族阶级的衰亡、资本主义社会金钱主宰一切的社会文化心态。
文化的挖掘意识就是对文学作品中写作主体在特定时代的心灵状态、生命状态、价值取向、思维方式的感悟。
北师大教授刘锡庆认为:“作文的本质是写作主体内在精神、独特个性的自由显现,是其生命力、创造力的文字外化。
”这就需要学生阅读时不仅要读作品,还要读与作品相关的资料:作家传记、创作手迹,了解作品所处的时代背景、社会风尚,这些与作品相关的文化知识对解读作品大有裨益。
文化的反思意识。
反思是一种再思考。
学生在阅读活动结束后,对自己的阅读理解、阅读感受以及阅读判断进行分析思考的一种心理需求和习惯。
文学作品源于生活又高于生活,文学作品中反映的人的生存状态、生存意义、人与人交往沟通情况以及人所憧憬的理想必然与作家不同的文化取向和文化理想有关。
任何时代任何民族的作品,它作为文字符号总是负载着文化意义,这些文化意义深入到文学作品的深层,成为一种“底色”,学生通过艺术文本内部反观作品文化思想、文化意义,就是寻求这个“底色”的过程。
有些文学作品本身就包含了浓郁的文化反思意识:鲁迅从对民族传统文化的反思中深入剖析了中国国民的精神弱点;老舍则通过北京市民社会这个独特的角度对中国文化进行了崭新的透视,体现了“笑中有所思”的艺术魅力。
2020年上海市延安中学高三英语二模试卷及答案

2020年上海市延安中学高三英语二模试卷及答案第一部分阅读(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项ASan Francisco Bay Area is a great place if you're a sports fan as you'll find several events all year round and plenty of team pride. If you are anywhere close to the area during a game,these fantastic sports events are here for you.San Francisco Giants BaseballThe San Francisco Giants baseball team plays in SF at Oracle Park. This is a fun ballpark because it's always packed with great energy and offers views of the bay. It's one of the most popular San Francisco sports events. The Giants are part of the National League West Division. Since their arrival here in 1958,they have been World Series Champions three times.Golden State Warriors BasketballThe fan base of the Golden State Warriors distributes the whole San Francisco Bay Area as this region's only NBA team.Their regular season runs from late October through mid-April, and all home games are played at the Chase Center in San Francisco.In total, the Warriors has won six NBA championships.San Francisco 49ers FootballThe 49ers are San Francisco's NFL team, though they have recently moved to Levi's Stadium in Santa Clara, about an hour south of SF. The football team was named for the prospectors (探矿者) who arrived in the area in 1849 for the Gold Rush. They’ve won 5 Super Bowl championships, all between 1981 and 1994.San Jose Sharks HockeyThe San Jose Sharks represent the Bay Area in hockey (冰球).They were founded in 1991 as the only Bay Area team to compete in the NHL. Sharks fans love going to these San Francisco sports events at the SAP Center,which they call the Shark Tank,located about an hour southeast of SF.1.Where can a sports fan have a good view of the area?A.The Oracle Park.B.The Chase Center.C.Levi's Stadium.D.The SAP Center2.Which team has claimed the most titles according to the text?A.The Giants.B.The Golden State Warriors.C.The 49ers.D.The San Jose Sharks.3.Where is the passage probably taken from?A.A book review.B.A news report.C.A science fiction.D.A tourist magazine.BKids often admire well-known celebrities, putting posters of their favorite musicians, movie stars and athletes on their bedroom walls. But rarely does a young person get to meet or talk to their idol. Yet for one young tennis player - Coco Gauff - her chance to do just that happened in an amazing way!Coco was born on March 13, 2004. At the age of 4, she developed an interest in tennis after watching Venus Williams win the Australian Open on TV. Coco began playing at 7 and showed a real talent for the sport. When young Coco turned 10, she began training at a tennis centre run by Venus's coach, Patrick Mouratoglou. He still remembers the first time he met Coco. He says, “She impressed me with her determination and fighting spirit. ” Convinced of her talent, Mouratoglou sponsored(资助)Coco to attend his academy in France. While she was preparing to go to the academy in 2019, she received a call that would change her plans and her life!Wimbledon(温布尔顿网球比赛)organizers called and offered Gauff entry to the tournament(联赛)as a wildcard(外卡选手).This madeher one of the youngest players to ever qualify. Before she knew it she was on her way to London. After arriving, she received another surprise. For her Wimbledon debut(首次登场),she would be playing her lifelong hero, Venus Williams! The tennis legend is 24years older than Gauff.The world watched with amazement as young Gauff beat Venus in two straight sets! Afterwards, Gauff shook Venus's hand, thanked her and said, “I wouldn't be here if it wasn't for you. " After the match, Venus said of Gauff, “I think the sky is the limit;it really is. " Venus said, “I feel honored that I was on her wall [as a poster] at some point in her life. Soon she will be on other girls' walls. It's nice because it will keep going from the next generation to the next generation. "4. What can we learn about Coco from the text?A. She took up tennis as career at the age of 4.B. She went to academy at the age of 7.C. She had played against William before 10.D. She beat William at the age of 155. Which of the following can best describe Coco?A. Talented and modest.B. Lucky and responsible.C. Proud and hard-working.D. Respectful and cheerful.6. What can we infer from Venus's words?A. Coco had reached her limits.B. Coco would rise to fame after the match.C. Coco's poster would be passed on.D. Coco had once visited her home.7. What can be a suitable title for the text ?A. Coco Gauff:Tennis's Next Superstar.B. Coco Gauff:A Poster on the Wall.C. What Posters Mean to a Young Girl.D. The Significance of Admiring an Idol.CThereare two days that set you on your path in life: the day you’re born, and the day you realize why you were born.Growing up south of Chicago in Harvey, Illinois, most people just had their heads down trying to make it from point A to point B. I was the same way, just going with the flow. I played basketball in high school because I was good at it and because other people thought I should until I discovered my talent.I give up basketball and started doing speeches. It wasn’t a popular decision but my grandfather told me to do what made me happy. I fell in love with comedy and performing. And when I discovered the passion, I realized why I was born.I knew I had something to offer —I knew that not only am I powerful, but I can make a difference.I realized a long time ago that my dream is not to be famous or rich. My talent is to entertain. But it’s more than that. I have the chance to reach people, to brighten days, to bring laughter and positive energy into lives and inspire. And I am grateful forit.Acting putting myself out there and having doors closed on me time and time again has taught me a lot about myself. I have learned to trust what I have to offer the world over momentary doubt. I’ve learned to put my faith over my feelings. And I've grown a tough skin. More importantly, I have learned there is a long way towards our goals and that when we put our talents and passion to work, we determine our value.Like a lot of places across the country, there’s poverty, crime, violence and unemployment in Harvey. And growing up there, a lot of people have tragically low expectations for life. But I know that with the right opportunity and with help along the way, everyone can find their passion and go after it. My life is proof.8. What was the author born to do according to the text?A. Be a basketball player.B. Act and perform.C. Make speeches.D. Teach people.9. What does the underlined word “it” in Paragraph 5 refer to?A. Chance.B. Energy.C. Days.D. Laughter.10. What is the author’s purpose of writing this text?A. To help others find their talents.B. To prove his decision was right.C. To inspire people to follow their dreams.D. To encourage people to set a goal.11. What can be the best tile for the text?A. Success Lies in Hard Work.B. How to Achieve the Dream Is Important.C. The Two Important Days in Life.D. The Day I Realized What I Was Born to Do.DMany cars in advertisements and on exhibition in the United States are red, blue or green, but almost 75 percent of new cars sold in the United States are black, white, silver orgray.Les Jackson is a reporter who writes about cars. He says the color1 s of cars Americans choose do not show dirt. He says that means the owners wash their cars less in order to save money. And he notes some areas that are suffering from water shortages do not permit people to wash their cars often.Dan Benton works for a company called Axalta, which makes supplies for international car makers. He says white cars are often sold more expensive than cars of other color1 s. And he notes that white cars “absorb(吸收)less energy” than cars of other color1 s. This means temperatures inside them are lower in warmer areas. Benton also says research at Monash University in Australia suggests that there is a lower risk of crashes during the day for white cars compared with darker ones.Car buyers in other countries also like white. Jane Harrington works for PPG Industries, a company that makes paint for cars. She said in China, buyers say white makes a small car look bigger.About 11 percent of cars sold in North America are red and 8 percent are blue. Green has become less popular. Benton notes that in the mid-1990s green was the most popular color1 in North America. Today, green is hard to find.Sometime in the future, people may not have to choose the color1 of their cars —— technology may let owners change their cars’ paint color1 anytime.12. What can we learn from Paragraph 2?A. Most Americans don’t like red cars.B. People in America are not allowed to wash their cars.C. Many people prefer to choose white cars in America.D. Americans may consider the cost of cleaning when choosing cars.13. Why do many people choose white cars?A. They are much cheaper than cars of other color1 s..B. They are much safer while crashing.C. They are bigger than cars of other color1 s.D. They are more comfortable inside in warmer areas.14. What do we know from the text?A. Les Jackson is a member of Axalta.B. Most Americans rarely wash their cars.C. PPG Industries mainly produces cars in China.D. Green cars were once popular in North America.15. What does the text mainly tell us?A. Choices of car color1 sB. How to buy a good car.C. Differences of car color1 s.D. Popular car color1 s in history.第二节(共5小题;每小题2分,满分10分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。
上海市延安中学高三下学期适应性考试三模数学文试题含答案[高考精品].doc
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上海市延安中学2015学年第二学期适应性考试高三年级数学(理科)试卷一、填空题:本题满分56分,每小题4分1.(x + 1)5的展开式中,兀2的系数为_________ .2.己知集合A = {x\x2-3x<0,xe N\则用列举法表示集合A二 _______________ .log. X -13•若=0,则兀= •-4 24.若sin6r = - , a为第二象限角,贝0 sin la的值为____________ .5.函数/(x) = x\x< -2)的反函数是_____________ .6.在AABC 中,ZABC = - , AB =逅,BC = 3,则AC =4r2 v27.已知双曲线务-务=1的一条渐近线过点(4,3),且双曲线的一个焦点在抛物线a b~y2 = 20x的准线上,则双曲线的方程为_________ .8.将序号分别为1、2、3、4、5的5张参观券全部分给4人,每人至少1张,那么不同的分法种数是________ .9.在复平面上,已知复数Z]和Z2的对应点关于直线y = x对称,且满足Z,Z2=9Z,则I 召 |= ________ .210.已知数列{色}是公差为1的等差数列,则lim如= ___________ .”卄S”S 9 11.设甲乙两个圆柱的底面积分别为S P S2,体积为K,% ,若它们的侧面积相等且才=匕,*S*2 4则匕的值是匕12•已知函数/(%) = 3sinx+4cos x,若对任B XG R均有f(x) > f(a),贝0 tan a的值等13.如图所示,求一个棱长为血的正四面体的体积,可以看成一个棱长为1的正方体切去四个角麻得到,类比这种分法,一个相对棱长都相等的四面体A-BCD,其三组棱长分别为 AB = CD = 4i , AD = BC = y[^ , AC = BD = 4id,则此四面体的体积为_______________ .14.己知椭圆G : 2 += 1(。
2020届上海市延安高级中学高三英语二模试题及答案

2020届上海市延安高级中学高三英语二模试题及答案第一部分阅读(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项AThe Middlerby Kirsty ApplebaumEleven-year-old Maggie lives in Fennis Wick, enclosed and protected from the outside world. Her brother Jed is the eldest, a hero. Her younger brother is Trig—everyone loves Trig. But Maggie's just a middler;she is left behind. In this book, we experience the sadness of being the forgotten middle child, the child with no voice, even in her own family.Dennis in Jurassic Barkby Nigel AuchterlounieBeanotown is in trouble again, and this time the danger is Jurassic! Dennis,latest adventure is filled with fun, including Vikings, Victorians and soon, along with puzzles for you to finish. Can you help Dennis save Beanotown from the prehistoric invasion?Little Book for Big Changesby Karen Ng and Kirsten LiepmannIncluding more than 100 activities, try-outs, games, puzzles and tips,Little Book for Big Changesoffers fun and creative ways to bring people together to help change the world. Understand more about big problems in the world such as inequality and climate change, and be empowered to help make the world a better place.The Saga of Erik the Vikingby Terry JonesIn this illustrated story, Erik the Viking sets out with his trusty team of men in search of the land where the Sun goes at night. On his journey, he will meet adventures that will put his courage to the test.1. Who told a story about an unseen child in a family?A. Terry Jones.B. Kirsty Applebaum.C. Nigel Auchterlounie.D. Karen Ng and Kirsten Liepmann.2. Which book is proper for kids who love prehistoric-related stories?A.The Middler.B.Little Book for Big Changes.C.Dennis in Jurassic Bark.D.The Saga of Erik the Viking.3. What is special aboutLittle Book for Big Changes"!A. It is about two people.B. It is an adventure book.C. It has picturesinside to help kids read.D. It teaches kids to care for the world.BBe it from the mouths of foreigners who have lived here for a few years or from stories on travel websites, one of the most common qualities that people list about Shanghai is the infectious energy that courses through the city.For some, this energy is defined by the way of life—Shanghai is a city that never sleeps. In the day, the streets arc always bustling with people from all over the world. After all, the city has long been China’s most cosmopolitan city, having been the epicenter of trade and cultural exchange between Chinese and foreigners since the city was forced to open its door to the world in 1843 after the First Opium War (1840-42).Shanghai’s ubiquitous delivery people can be found on the roads even past midnight, rushing from point to point on their trusty electric scooters to satiate the hunger of night owls. Even before the break of dawn, pensioners can be found gathering in parks, ready to kick start their day with a tai chi session.For others, this energy is generated from the friction between the contrasts the city has. Indeed, it does not take long for one to realize that Shanghai's charmlies in it being a binary of old and new.Here, charming neoclassical architecture and art deco structures stand alongside modem buildings with shimmering glass and metal facades, rustic (质朴的)lane houses and shikumen buildings. Humble mom-and-pop shops that look stuck in time can often be found right next tohipdining venues or industrial-chic fashion stores selling designer apparel.One of the best places to get an overview of these surreal contrasts is none other than the tallest building in the city — the Shanghai Tower in Lujiazui. Measuring a dizzying 632 meters in height, this architectural marvel boasts having the world's highest observation deck within a building or structure. It also comes with the world's fastest elevators which would get you from the bottom to the top at 20.5 meters per second.On the other side of the Huangpu River is where you would find the Bund, which is home to magnificent neoclassical buildings. The Bund is to Shanghai what Times Square is to New York or what the Champs-61ysees is to Paris. A trip to Shanghai would not be complete without exploring this iconic waterfront promenade.Autumn is the best time to experience Shanghai on foot, not merely because the weather is conducive for walking, but because this is when the roads and sidewalks in many areas are blanketed with a layer of color1 fulfallen leaves.4. Why is the example of delivery man mentioned?A. To make a contrast with pensioners’ biological clock.B. To illustrate the vibrant energy of modern Shanghai.C. To highlight the diligence and consideration of delivery man.D. To feature the courier delivery service in full swing.5. Which of the following is TRUE about the contrast of Shanghai?A. The contrast mainly arises from the First Opium War.B. The design of the Shanghai Tower stands for a contrast.C. A marked contrast is shown in the use of building materials.D. The dishes served in mom-and-pop shops represent the outdated flavor.6. The underlined word “hip” in paragraph 5 is closest in meaning to________.A. photographicB. modestC. peculiarD. stylish7. Which of the following will be most probably discussed following the last paragraph?A. Stunning views of the Shanghai skyline.B. The best places to view the seasonal spectacle.C. The walking path thathugs the Huangpu River.D. Must-try dishes and food items typical of Shanghai.CA company called Neuralink has shared a video which appears to show a monkey playing a video game, but what makes the video even stranger is that themonkey is playing the video game with just its mind.Neuralink is a company owned by Elon Musk, which is working to develop devices that could allow people to control things using just their brains. The monkey in the video is called Pager, having special "Link" devices inside his brain. These devices are connected to 2,048 wires which lead to the parts of Pager's brain that control movements of the arms and hands.Scientists taught Pager to play a video game using a banana juice as a reward when he playedthe game correctly. Soon Pager was eager to play well in order to get more smoothie. At first, Pager controlled the video game using a joystick (操纵杆). But as Pager played, his Link devices wirelessly sent out information about the signals his brain was using to control his arms and hands. Neuralink's scientists recorded all of these signals.Then they used computers to match up the signals from Pager's brain to the movements that his hands wereactually doing. This was challenging work and the scientists counted on artificial intelligence (AI) to help them decode (解码) Pager's brain signals.The next step was to have a computer make moves in the video game as if Pager had actually moved the joystick. If Pager thought about moving the joystick up, the computer would send an "up"signal to the video game. Thus Pager was able to play the video game using just his brain.When people are paralyzed (瘫痪的), it's often because the brain has lost the ability to send signals to nerves and muscles in certain parts of the body. Neuralink hopes that one day, its system will be ableto send this information in a different way, allowing paralyzed people to use their arms or legs again.8. What does Neuralink aim to do?A. To make monkeys much smarter.B. To solve complex problems with monkeys.C. To create a device linking monkeys and people.D. To make people control things with their brains.9. How does the author introduce the process of the research?A. In order of time.B. By making a comparison.C. By giving examples.D. In order of space.10. What played an important role in the success of the research?A. The joystick.B. Artificial intelligence.C. The video game.D. The banana smoothie.11. Which is the most suitable title of the test?A. Neuralink Posts an Unusual VideoB. Disabled People Have a Bright FutureC. Monkey Plays Video Games with His MindD. Neuralink, a Creative and Competitive CompanyDIvrea is a town in the Piedmont province of northern Italy. It is known for its localcarnival(狂欢节)organized in February.The main part of the carnival is the famous Battle of the Oranges (La battaglia delle arance). The Battle includes nine teams who throw oranges at each other during three carnival days – Sunday, Monday and Tuesday.Oranges were not always used in the battle. In the middle ages people used beans. Twice a year the localfeudal lord gave a pot of beans to the poor families who, as sign of rebellion, threw them out of their homes. Later beans became part of carnival as sort of “ammunition” for throwing at people passing by.It is still not known why exactly people started using oranges. It is believed that the origin for this tradition is in the mid 19th century. The legend says that local girls, standing on balconies, started to throw some oranges, together with confetti,lupins(白羽扇豆)and flowers, onto the parade carriages. The girls actually wanted to draw attention of boysin the carriages. Boys “answered” by throwing some objects back at girls. Little battle started that way.Battle of the Oranges got strict rules after the World War II. The battles are organized on town's squares. The battles are fought between teams in carriages (symbolizing local the guards of localtyrant(恶霸)) and the teams walking beside those carriages (symbolizing rebellious people of Ivrea).Oranges for the event are brought from the island of Sicily. The oranges used are of low quality, not suitable for humans. About 270,000 kilograms of oranges are used each year.The carnival ends with a silent march on the night of “Fat Tuesday”. The Carnival "general" says goodbye to everyone with the phrase "See you next Fat Thursday at 1 p.m."Special prizes are awarded to three best foot teams, three carriages drawn by two horses and three carriages drawn by four horses. Different elements are judged like for example throwing ability, fair play or decoration of carriages.12. The word "ammunition" (paragraph 3) is closest in meaning to________.A. decorationB. bulletsC. advertisementD. presents13. In Battle of the Oranges, the teams walking beside carriages act as ________.A. the Carnival generalB. the local feudal lordC. the rebellious people of IvreaD. the guards of local tyrant(暴君)14. Which of the following statements about Battle of the Oranges is NOT true?A. In the middle ages, people threw beans out of homes as a sign of rebellion.B. Girls throw oranges towards carriages in the parade to attract the attention of boys inside.C. Tons of oranges are used every year to hold the festival.D. People started to throw oranges because they are of low quality and not suitable to eat.15. What is this passage mainly about?A. A traditional activity in an Italian carnivalB. The origin of Battle of the OrangeC. How people enjoy themselves in the Orange CarnivalD. The rules of activities in carnivals in Italy第二节(共5小题;每小题2分,满分10分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。
2020-2021学年上海市延安中学高三英语二模试题及答案

2020-2021学年上海市延安中学高三英语二模试题及答案第一部分阅读(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项AMy mother and her best friend Martha were in their mid-80s when they saw each other for the last time.They had been friends since they were 18, both of them students atWesleyanCollegeinMacon,Georgia. My mother was the dreamy one, who loved to read and dream herself as an actress. Martha, however, was more practical. I’m not sure what they had in common except that they trusted each other, helped each other, and stayed in touch even when life separated them.Martha spent most of her adulthood inAtlanta, where she raised three kids. My mother, meanwhile, raised eight children, and moved many times during her financially and emotionally troubled marriage, which included several months living with her family inseedymotels.I sensed my mother hid her troubles from most people, but not from Martha, and I knew from my mother that Martha carried her own sorrows. Their willingness to share sorrow without judgment was part of what bond them.The best friendships can also withstand (抵挡) periods without communication. They didn’t communicate a lot — this was before the ease of emails and texts and yet I knew they were always in each other’s minds.One day in 2008, 1 drove my mother to Martha’s house for their final visit. The moment my mother hobbled (蹒跚) into Martha’s house, they threw their arms around each other and went to sit out in the garden, laughing until they were dizzy. I snapped a photo, and spotted something joyous, young and free on my mom, which existed only in the presence of her best friend.Two years later, my mother died. Of all the people I had to tell, Martha was the hardest because I felt it erased her past. After that, we lost touch. But I still think of her and how that friendship strengthened my mother.1. What does the underlined word “seedy” in Paragraph 3 probably mean?A. largeB. dirtyC. urbanD. bright2. The author’s mother and Martha had a lasting friendship partly because they________.A. were willing to shareB. were constantly in touchC. had much in commonD. had a likeness in personality3. What is the author’s purpose in writing the text?A. To tell the importance of friendship.B. To express his gratitude to his mother.C. To share his standard of choosing a friend.D. To praise the friendship between Martha and his mother.BFlying someone one-way fromLondontoNew Yorkproduces nearly a ton ofcarbon dioxide or CO2. That's alot of this climate-warming greenhouse gas. But there are ways to cut the climate impact of flying, one of which is to ask planes to surf high-altitude winds every chance they get.It's not something they've been allowed to do. But that may change—and soon.Most jets crossing the Atlantic Ocean follow one of several fixed paths that are widely spaced because radar (雷达) had not been able to track aircraft everywhere above the Atlantic. But a new network of satellites could soon change that.Wells was part of a team inEnglandthat calculated the fastest possible routes for passenger planes. According to them , traveltime a plane takes when flying across theAtlanticvaries with the winds that a plane meets. For instance, eastbound (向东的) flights can get a powerful push. Westbound routes miss that benefit. Faster flights burn less fuel. And less burning gives off fewergreenhouse gases.The airline industry knows it has a high " carbon footprint." But it takes decades and many billions of dollars to design, test and fly new planes. Changing a flight path, in contrast, can cut costs and energy right away.The new study doesn't show how well such wind surfing would work for all planes, in all skies and the world over. Bui it does suggest that making flight routes more flexible could cut both fuel use and CO2in some places.However, if flight times vary depending on the wind, scheduling connecting flights and managing runways and gates would become more complicated. The researchers would have to work out the best flight paths that take such scheduling issues into consideration. They may also want to see if flying at different altitudes gives a wider choice of flexible routes at the times most people want to fly.National Air Traffic Services (NATS) which provides air-traffic control for theUnited Kingdomsaid it would temporarily disband its flight-paths system and work to allow airlines to choose flexible routes that would best limit their fuel use.4. What happens to east bound flights when crossing theAtlantic?A. They consume more fuel.B. They use less time and energy.C. They produce more greenhouse gases.D. They are against a stronger wind.5. What should be done to make adopting flexible flight routes possible?A. Calculating the flight time.B. Finding the best flight paths.C. Adjusting the size of jets.D. Adding more runways and gates.6. Which word can best replace the underlined word "disband” in the last paragraph?A. Stop.B. Copy.C. Handle.D. Restore.7. What can we infer from the text?A. Planes are producing the most carbon dioxide.B. New fuel is benefiting airline industries greatly.C. Carbon footprint is a serious problem in theUK.D. Surfing the winds can make air travel greener.CAlaska—The American city Anchorage is recovering from a powerful earthquake Friday that damaged public buildings, homes and roads.The 7.0 earthquake caused buildings to slake. But there have been no reports of deaths, serious injuries or damage. Officials say the quake has not affected transportation of food and her supplies. “The ships are coming in on schedule, the supply lines are at this point working well,” the government told reporters Sunday.The Glenn Highway was probably the road hit hardest by the earthquake. It connects the state's largest city to other parts in the north. Traffic has been heavy and slow—moving since the quake. Drivers are being guided. Groups of workers are trying to rebuild areas where the quake left large holes in the road.People who are still nervous after the major quake have been more upset by more than 1, 700 aftershocks. “Anything that moves, you feel terrified”said David, whose home suffered structural(结构)damage, including a sunken foundation(地基). Actually, Alaska came up with strict building rules after a 9. 2 earthquake in 1964. That was the second most powerful earthquake on record.Government officials said a public health center promises that moneyfor medical treatment will continue to come. Mental healthy service(心理健康服务)is also available for people hurt by the disaster.Earthquake experts say there is a 4 percent chance of another 7. 0 earthquake or greater in the following week. "The chance is very small, but its not impossible, ” said the expert, Paul Caruso.8. What was the result of the earthquake?A. Buildings were damaged.B. Food supply was cut off.C. Many people were killedD. The ships could not come in.9. Why is the traffic slow on the Glenn Highway?A. Because small quakes hit the city.B. Because falling rocks are a danger.C. Because the highway is badly damaged.D. Because drivers are misled.10. What can you learn from Paul Caruso?A. Another greater earthquake is on the way.B. Chances still exists of another earthquake.C. It will be safe in the 1th week after the quake.D. There is no possibility for more quakes.11. Where can your possibly read the passage?A. Ina story book.B. In a travel journal.C. In a poster.D. In a newspaper.DNew Yorkis among the slowest cities during rush hour in the world, according to a report published in January. Crossing midtown by car is soul-destroying. The average speed is 4.7 miles per hour, not much quicker than a quick walk. But relief is in sight. On April 1st, state lawmakers agreed to introduce road charges, makingNew Yorkthe first big American city to do so. By next year vehicles will have to pay to enterManhattansouth of60th Street.The details of the new rule, including how much drivers will have to pay, how they will pay and how often they will pay, haveyet to be decided. A “traffic mobility review board" will be set up to work all this out. New Yorkers living in the fee zone who make less than $60,000 a year will be exempt (获豁免) . Other drivers, including motorcyclists, the city' s civil servants, disabled drivers and the trucking industry, all want discounts or exemptions, which might not be a good sign.If done right, road pricing could be expanded beyondManhattan.New Yorkcan learn from other cities.Singapore, for instance, which has had pricing for decades, adjusts prices regularly. It can also learn from mistakes.London, which rolled out its pricing in 2003, is only starting to charge on-demand car hires like Uber. Stockholm exempted too many vehicles, which caused a drop in revenues (收入) .Other cities considering road charges, includingLos Angeles, Philadelphia Portland,San FranciscoandSeattle, are watchingNew York. "We really have t1o make a good example," says Nicole Gelinas of the Manhattan Institute, aNew Yorkthink tank.12. What does the report find?A.New Yorkhas terrible road traffic.B.New Yorkoften introduces new laws.C. New Yorkers prefer walking to driving.D. New Yorkers face an increased cost of living.13. What can be inferred about the new rule from paragraph 2?A. It faces some potential problems.B. It has clear and detailed fee standards.C. It favors New Yorkers living in the fee zone.D. It fails to win a traffic mobility review board s approval.14. What doLondonandStockholmhave in common?A. They learn a lot fromSingapore.B. They have greatly increased revenues.C. They charge on-demand car hires heavily.D. They are bad examples of placing road charges.15. What is the best title for the text?A. How much does it cost to drive intoManhattan?B.New Yorkapproves road pricing forManhattanC. Drivers fear crossingManhattansouth of60th StreetD. Who will be exempt from road charges inManhattan?第二节(共5小题;每小题2分,满分10分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。
2020届上海市延安实验高级中学高三英语模拟试题及答案

2020届上海市延安实验高级中学高三英语模拟试题及答案第一部分阅读(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项APlan Your Visit to the British MuseumWe've made a few changes to ensure you can safely enjoy your visit:How to book tickets·Tickets for the permanent collection can only be hooked online in advance.·To book tickets for exhibitions, visit our exhibition pages. If you want to guarantee your visit to the permanent collection as well as the exhibition on your visit, you will need to book a separate ticket.·We are limiting numbers of people in the museum to ensure there is room for you to safely enjoy your visit. Everyone, including members and volunteers, will therefore need to book a free, timed ticket in advance.Important information about your ticket booking·You can book up to six tickets for people who live in the same family.·We will email yourticket to you, and you will need to show it either printed out or on your device (设备) when you arrive.·Please arrive at the time stated on your ticket-we cannot guarantee admission before or after it.Following the routeWe have created a new one-way route through the museum which will allow you to safely explore world cultures from the Mediterranean to the Middle East and from the Americas to Africa.·View a map of the route (Open in a new window).·Our audio guides (音频指南) are not available. However, youcan pay to download the audio introductions from iTunes (Open in a new window) or Google Play (Open in a new window) to each of the galleries and listen on your own device. Please remember to bring along your own headphones.1.Why does the museum offer timed tickets?A.To earn more money.B.To hire more volunteers.C.To save room for collections.D.To control the number of visitors.2.How can a visitor learn about the new route in advance?A.View an online map.B.Buy a new headphone.C.Buy audio guides from the museum.D.Download video introductions from iTunes.3.Where can you probably find the text?A.In a newspaper.B.In a magazine.C.On a website.D.In a report.BIs renting clothes greener than buying them? Sustainable (可持续的) fashion expert Elizabeth Cline isn’t sure. Clothing renting is a hot new industry and businessmen are trying to attract shoppers who care about the environment. Last summer alone,Urban Outfitters, Macy’s, Bloomingdale’s American EagleandBanana Republicall announced renting services – a sure sign of changing times.But is renting fashion actually more environmentally-friendly than buying it? And if so, how much more? Journalist and author Elizabeth Cline researched this question in a feature article for Elle, and she concluded that it’s not as sustainable as it seems.Take shipping for example, which has to go two ways if an item is rented – receiving and returning. Cline writes that consumer transportation has the second largest carbon footprint of our collective fashion habit after manufacturing.Then there’s the burden of washing, which has to happen for every item when it’s returned, regardless of whether or not it was worn. For most renting services, this usually means dry-cleaning, which is a polluting process. All the renting services that Cline looked into have replaced perchloroethylene, a carcinogenic (致癌的) air pollutants that’s still used by 70 percent of US dry cleaners, with hydrocarbon (碳氢化合物) alternatives, although these aren’t great either. They can produce harmful waste and air pollution if not handled correctly.Lastly, Cline fears that renting services will increase our appetite for fast fashion, simply because it’s so easily accessible. There’s something called “share-washing” that makes people have more wasteful behaviors because a product or service is shared and thus is considered more eco-friendly. Uber is one example of this: advertised as a way to share rides and reduce car ownership, and yet it has been proven to discourage walking, bicycling and public transportation use.Renting clothes is still preferable to buying them cheap and throwing them into the bin after wearing them a few times, but we shouldn’t let the availability of these services make us self-satisfied. There’s an even better step – and that’s wearing what we already have.4. What do we know about Elizabeth Cline from the passage?A. She is trying to attract shoppers.B. She is an expert and journalist.C. She has created “share-washing”.D. She never rents clothes.5. Why does renting services increase people’s appetite for fast fashion?A. Because it is handled correctly.B. Because it is transported easily.C. Because it is fairly eco-friendly.D. Because it is easily accessible.6. What can we infer from the passage?A. Clothing renting became popular ten years ago.B. Consumer transportation has the largest carbon footprint.C. Renting clothes deserves further consideration.D. Uber is a good example of sharing rides.7. Which section of a newspaper does the text probably come from?A. Environment.B. Technology.C. Travel.D. Medicine.CGlobal food demand will double by 2050, according to a new projection, and the farming techniques used to meet that unprecedented(空前的) demand will significantly determine how severe the impact is on the environment, researchers said.The study researchers warned that meeting the demand for food would clear more land, increase nitrogen(氮) use and significantly add to carbon dioxide and other greenhouse gas emissions.“Agriculture’s greenhouse gas emissions could double by2050 if current trends in global food production continue,” study researcher David Tilman, of theUniversityofMinnesota, said in a statement. “This would be a major problem, since global agriculture already accounts for a third of all greenhouse gas emissions.”The researchers studied various ways in which the increasing food demand could be mentioned. They found that the most environmentally friendly and cost-effective approach would be for more food producers to adopt the nitrogen-efficient “intensive” farming method, which involves the heavy use of labor and the production of more crops per acre.This approach was shown to be more effective than the “extensive” farming currently practiced by many poor nations, a method that includes clearing more new land to produce more food.Different farming methods produce significantly different yields, the researchers found — in 2005, the crop yields for the wealthiest nations were more than 300 percent higher than what the poorest nations produced.According to their analysis of the effects of extensive farming, if poorer nations continue using this method,by 2050theywill have cleared an area larger than theUnited States, about 2.5 billion acres. However, if wealthy nations help poorer nations to improve food yields by incorporating(吸收) intensive farming practices, that number could be reduced to half a billion acres.The researchers stress that the environmental effects of meeting future food demand depend on how global agriculture expands and develops.“Our analyses show that we cansave most of the Earth’s remaining ecosystems by helping the poorer nations of the world feed themselves,” Tilman said.8. What is the best title of this passage?A. The World Will Need Double Food by 2050B. Man Will Face the Risk of Lacking Food in the FutureC. Future Farmers Hold Environment’s Fate in Their HandsD. Different Farming Methods Produce Significantly Different Yields9. The character of the extensive farming is ________.A. very cost-effectiveB. to produce more crops per acreC. at cost of more new land to produce more foodD. very environmentally friendly10. It can be inferred from the passage that ________.A. poorer nations mainly use the intensive farmingB. wealthy nations mainly use the extensive farmingC. the intensive farming needs less food producersD. the extensive farming has a worse effect on ecosystems11. According to the passage, the underlined word “they” in the 7th paragraph refers to “________”.A. poorer nationsB. the effects of extensive farmingC. wealthy nationsD.future food demandD“They’re harming your brain.” “They’re ruining your eyes.” “They’re turning you into a violent person.” The words said publicly against video games are so common, but are these worries founded on actual science?Countless studies have offered different opinions on whether video games are bad for you. We’ve rounded up the most notable reports and studies below, so you can weigh up the evidence for yourself.In 2013,psychologist(心理学家) Simone Kuhn studied the influences of spending long hours on video games on the brains of young adults and found that several areas became bigger than before. These areas are connected with highercognitive functions(认知功能), memory formation andfinemotor(精细运动) function.Last year, psychologists said that video game players who favour violent games are more likely to be violent when offline. Dr. Mark Appelbaum of the American Psychological Association said that there was a relation between violent video game use and increases in violent behaviour.Dr. Daphne Bavelier is an expert in the field of Brain & Cognitive Sciences. Bavelier presented the audience with a colour-word test, where non-gamers are easily puzzled by the test, and those who spend long periods playing on their computers are more likely to pass the test with flying colours.“Actually, those video game players have many other advantages in terms of attention,” said Bavelier, “and one part of attention which is also improved for the better is our ability to follow the movements of objects.”“So, in a sense, when we think about the influence of video games on the brain, it’s very similar to the influence of wine on the health. There are some very poor uses of wine. There are some very poor uses of video games. But when drunk in reasonable amounts, and at the right age, wine can be very good for health,” said Bavelier.12. What can be learned from Simone Kuhn’s study?A. Video games make you happier.B. Video games make your brain grow.C. Video games play a key role in memory.D. Video games teach you how to learn fast.13. What was Dr. Mark Appelbaum’s attitude towards video games?A. He was against them.B. He was hopeful of them.C.He was in favour of them.D. He was uncertain about them.14. Which of the following may Dr. Daphne Bavelier agree with?A. Video games fix attention problems.B. Video games make kids do well in exams.C. Video games encourage violent behaviour.D. Video games help increase colour knowledge.15. Why are the uses of wine mentioned in the last paragraph?A. To remind people to avoid video games.B. To show the disadvantages of video games.C. To help people learn more about video games.D.To ask people to make good use of video games.第二节(共5小题;每小题2分,满分10分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。
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【全国百强校】上海市延安中学2020届高三第二学期适应性考试(三模)数学(文)试题一、选择题:本题共12小题,每小题5分,共60分。
在每小题给出的四个选项中,只有一项是符合题目要求的。
1.已知椭圆22122:1(0)x y C a b a b+=>>与圆2222:b y x C =+,若在椭圆1C 上存在点P ,过P 作圆的切线PA ,PB ,切点为A ,B 使得,则椭圆1C 的离心率的取值范围是( )A .3B .23[ C .2[D .)1,21[2.设双曲线C :221(0)8x y m m-=>的左、右焦点分别为1F ,2F ,过1F 的直线与双曲线C 交于M ,N两点,其中M 在左支上,N 在右支上.若22F MN F NM ∠=∠,则MN =( )A .82B .8C .42D .43.已知各项均为正数的等差数列{}n a 的公差为2,等比数列{}n b 的公比为-2,则( ) A .14n n a a b b --=B .14n n a a b b -=C .14n n a a b b --=- D .14nn a a b b -=-4.若方程2121x kx x -=--有两个不同的实数根,则实数k 的取值范围是( )A .(),1-∞- B .()1,0- C .()0,4D .()()0,11,4U5.已知0x >,0y >,lg 2lg8lg 2x y +=,则113x y+的最小值是( ) A .2 B .2C .4 D .36.已知点A 与点(1,2)B 关于直线30x y ++=对称,则点A 的坐标为( ) A .(3,4)B .(4,5)C .(4,3)--D .(5,4)--7.设椭圆()2222:10x y C a b a b+=>>的右焦点为F ,经过原点O 的直线与椭圆C 相交于点,A B ,若2,4AF BF ==,椭圆C 的离心率为73,则AFB ∆的面积是( )A .5B .25C .23D .3 8.下列说法正确的是 ( )A .命题“若21x =,则1x =”的否命题是“若21x =,则1x ≠”B .“1x =-”是“2560x x --=”的必要不充分条件C .命题“2,10x R x x ∃∈++<”的否定是“2,10x R x x ∀∈++<”D .命题“若x y =,则sin sin x y =”的逆否命题是真命题。
9.过圆()()22111C x y -+-=:的圆心,作直线分别交x 、y 正半轴于点A 、B ,AOB ∆被圆分成四部分(如图),若这四部分图形面积满足,S S S S ⅥⅡⅢI +=+则直线AB 有( )A .0条B .1条C .2条D .3条 10.2521(2)(1)x x+-的展开式的常数项是( ) A .3- B .2- C .2D .311.如图正方体1111ABCD A B C D -,点M 为线段1BB 的中点,现用一个过点,,M C D 的平面去截正方体,得到上下两部分,用如图的角度去观察上半部分几何体,所得的左视图为()A .B .C .D .12.已知A B C ,,三点都在表面积为100π的球O 的表面上,若4360AB ACB =∠=︒,.则球内的三棱锥O ABC -的体积的最大值为( )A .83B .103C .123D .163二、填空题:本题共4小题,每小题5分,共20分。
13.已知椭圆C:()222210x y a b a b +=>>的左焦点为(2,0)F -,存在直线y=t 与椭圆C 交于A,B 两点,使得ABF n 为顶角是150︒的等腰三角形,则其长轴长为______.14.过点1(,1)2P 的直线与圆22:(1)4C x y -+=交于A 、B 两点,C 为圆心,当ACB ∠最小时,直线的方程为___.15.设P 为曲线224x y =+上一点,(5,0)A -,(5,0)B ,若2PB =,则PA =__________.16.已知函数()232ln xf x x x a =-+(0a >),若函数()f x 在[]1,2上为单调函数,则a 的取值范围是__________.三、解答题:共70分。
解答应写出文字说明、证明过程或演算步骤。
17.(12分)已知数列{}n a 中,11a =,()*1212,n n a a n n N -=+≥∈.记()2log 1n n b a =+,判断{}n b 是否为等差数列,并说明理由;在(1)的条件下,设1nn n b c a =+,求数列{}n c 的前n 项和n T .18.(12分)曲线1C 的参数方程为1cos 21122x y sin ϕϕ⎧=⎪⎪⎨⎪=+⎪⎩(ϕ为参数),以原点O 为极点,x 轴的正半轴为极轴的极坐标系中,曲线2C 的极坐标方程为2cos 3sin ρθθ=.求曲线1C 的极坐标方程和曲线2C 的直角坐标方程;若直线:l y kx =与曲线1C ,2C 的交点分别为A 、B (A 、B 异于原点),当斜率3[,3]3k ∈时,求1OA OB+的最小值.19.(12分)在平面直角坐标系中,直线的参数方程为(其中为参数).以坐标原点为极点,轴正半轴为极轴建立极坐标系,并取相同的单位长度,曲线的极坐标方程为.求直线的普通方程和曲线的直角坐标方程;过点作直线的垂线交曲线于两点,求.20.(12分)正三角形ABC 的边长为a ,将它沿平行于BC 的线段PQ 折起(其中P 在边AB 上,Q 在AC 边上),使平面APQ ⊥平面BPQC .D ,E 分别是PQ ,BC 的中点.证明:PQ ⊥平面ADE ;若折叠后,A ,B 两点间的距离为d ,求d 最小时,四棱锥A PBCQ -的体积.21.(12分)如图,在四棱锥P ABCD -中,底面ABCD 为矩形,平面PBC ⊥平面ABCD ,PB PD ⊥.证明:平面PAB ⊥平面PCD ;若PB PC =,E 为棱CD 的中点,90PEA ∠=︒,2BC =,求二面角B PA E --的余弦值.22.(10分)在直角坐标系xOy 中,曲线1C 的参数方程为cos 1sin x ty t =⎧⎨=+⎩(t 为参数).在以坐标原点为极点,x 轴正半轴为极轴的极坐标系中,圆24:C cos ρθ=的圆心为2C .说明1C 是哪一种曲线,并将1C 的方程化为极坐标方程;过原点且与直线2cos 3sin x t y t αα=+⎧⎨=+⎩(t 为参数,0απ≤<)平行的直线3C 与2C 的交点为M ,N ,且2C MN△的面积为2,求α的值.参考答案一、选择题:本题共12小题,每小题5分,共60分。
在每小题给出的四个选项中,只有一项是符合题目要求的。
1.A 2.A 3.B 4.D 5.C 6.D 7.C 8.D 9.B 10.D 11.B 12.C二、填空题:本题共4小题,每小题5分,共20分。
13.262+- 14.15.416.2(0,][1,)5+∞U三、解答题:共70分。
解答应写出文字说明、证明过程或演算步骤。
17. (1)见解析;(2) 222n nnT +=- 【解析】 【分析】(1)根据题意,由于()2log 1n n b a =+,分析可得当1n =时,计算可得1b 的值,当2n ≥时,分析1n n b b --的值,综合即可得答案;(2)由(1)的结论求出{}n b 的通项公式,进而可得2n nnc =,由错位相减法求和可得答案. 【详解】解:(1)根据题意()2log 1n n b a =+, 当1n =时,有()1212log 1log 21b a =+==;当2n ≥时,()()1221211log 1log 1log 1n n n n n n a b b a a a ---+-=+-+=+ 122122log log 211n n a a --+===+; 所以数列{}n b 是以1为首项、公差为1的等差数列.(2)由(1)的结论,数列{}n b 是以1为首项、公差为1的等差数列,则()21n b n n =+-=,则12nn a +=,于是2n n nc =, ()23111111123...122222n nn T n n -⎛⎫⎛⎫⎛⎫⎛⎫=⨯+⨯+⨯++-⨯+⨯ ⎪ ⎪ ⎪⎪⎝⎭⎝⎭⎝⎭⎝⎭,①()2311111112...122222nn n T n n +⎛⎫⎛⎫⎛⎫⎛⎫=⨯+⨯++-⨯+⨯ ⎪ ⎪ ⎪ ⎪⎝⎭⎝⎭⎝⎭⎝⎭,②①﹣②可得:231111111...222222nn n T n +⎛⎫⎛⎫⎛⎫⎛⎫=++++-⨯ ⎪ ⎪ ⎪ ⎪⎝⎭⎝⎭⎝⎭⎝⎭1111111221122212n n n n n n +++⎛⎫- ⎪⎛⎫⎝⎭=-⨯=-- ⎪⎝⎭-,所以222n n nT +=-. 【点睛】本题考查数列的递推公式以及数列的求和,考查了数列性质的证明,关键是求出数列{bn}的通项公式,属于综合题.18.(1)1C 的极坐标方程为sin ρθ=;曲线2C 的直角坐标方程23x y =.(2)3【解析】 【分析】(1)消去参数,可得曲线1C 的直角坐标方程220x y y +-=,再利用极坐标与直角坐标的互化,即可求解. (2)解法1:设直线l 的倾斜角为α,把直线l 的参数方程代入曲线1C 的普通坐标方程,求得2OA t =,再把直线l 的参数方程代入曲线2C 的普通坐标方程,得2OB t =,得出21cos sin 3sin OA OB ααα+=+,利用基本不等式,即可求解;解法2:设直线l 的极坐标方程为θα=,分别代入曲线1C ,2C 的极坐标方程,得sin OA α=,23sin cos OB αα=,得出21cos sin 3sin OA OB ααα+=+,即可基本不等式,即可求解. 【详解】(1) 由题曲线的参数方程为1cos 21122x y sin ϕϕ⎧=⎪⎪⎨⎪=+⎪⎩(ϕ为参数),消去参数,可得曲线1C 的直角坐标方程为2211()24x y +-=,即220x y y +-=, 则曲线1C 的极坐标方程为2sin 0ρρθ-=,即sin ρθ=,又因为曲线2C 的极坐标方程为2cos 3sin ρθθ=,即22cos 3sin ρθρθ=,根据cos sin x y ρθρθ=⎧⎨=⎩,代入即可求解曲线2C 的直角坐标方程23x y =.(2)解法1:设直线l 的倾斜角为α,则直线l 的参数方程为cos x t y tsin αα=⎧⎨=⎩(α为参数,63ππα≤≤),把直线l 的参数方程代入曲线1C 的普通坐标方程得:2sin 0t t α-=, 解得10t =,2sin t α=,2sin OA t α∴==,把直线l 的参数方程代入曲线2C 的普通坐标方程得:22cos 3sin t t αα=, 解得10t =,223sin cos t αα=,223sin cos OB t αα∴==, 21cos sin 3sin OA OB ααα∴+=+11(2sin )3sin αα=+,3[,3]3k ∈Q ,即3tan [,3]3α∈,63ππα≤≤Q ,13sin 22α∴≤≤, 112sin 22sin 22sin sin αααα∴+≥⋅=, 当且仅当12sin sin αα=,即2sin 2α=时取等号, 故1OA OB +的最小值为223. 解法2:设直线l 的极坐标方程为θα=(63ππα≤≤),代入曲线1C 的极坐标方程,得sin ρα=,sin OA ρα∴==, 把直线l 的参数方程代入曲线2C 的极坐标方程得:2cos 3sin ρθα=,23sin cos αρα∴=,即23sin cos OB αρα==,21cos sin 3sin OA OB ααα∴+=+11(2sin )3sin αα=+, 曲线1C 的参3[,3]k ∈Q ,即3tan [,3]α∈, 63ππα≤≤Q,13sin 2α∴≤≤,112sin 22sin 22sin sin αααα∴+≥⋅=, 当且仅当12sin sin αα=,即2sin 2α=时取等号, 故1OA OB +的最小值为223. 【点睛】本题主要考查了参数方程与普通方程,以及极坐标方程与直角坐标方程点互化,以及直线参数方程的应用和极坐标方程的应用,其中解答中熟记互化公式,合理应用直线的参数方程中参数的几何意义是解答的关键,着重考查了推理与运算能力,属于基础题. 19.(1),; (2)16.【解析】 【分析】(1)对直线的参数方程消参得,利用即可将化为,问题得解。