上海外国语大学附属大境初级中学2020年期中单元测试

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2020届上海外国语大学附属外国语学校初中部高三语文上学期期中试题及参考答案

2020届上海外国语大学附属外国语学校初中部高三语文上学期期中试题及参考答案一、现代文阅读（36分）(一)现代文阅读I(9分)阅读下面的文字，完成下面小题。

乌米(俄)阿·马·高尔基(1)每当早晨醒来，我便打开房间的窗户，倾听着从山上透过果园中茂密的绿阴向我传来的心事重重的歌声。

无论我醒得多早，这歌声都已经回荡在充满着盛开的桃花和无花果的香甜气息的晨空里了。

(2)清风从阿伊——佩特里山巍峨的峰顶簌簌吹来，微微地拂动着我窗前浓密的树叶，树叶的簌簌声给歌声增添了许多令人心旷神怡的美感。

歌曲本身并不优美，而且有些单调，整个曲调很不和谐。

在看来本应该停顿的地方，听到的却是悲伤而激动的呼号，随后这一惊心动魄的喊叫又同样出人意外地变作了柔肠百转的怨诉。

这歌是一个苍老而颤抖的嗓音唱出来的，日复一日，从早到晚，什么时候都能听到这支像山溪一般流下来的唱不尽的歌子。

(3)村民们对我说，这心事重重的歌声他们已经听了七个年头。

我问他们：“这是谁在唱？”他们告诉我，这是一个叫乌米的疯老婆子唱的。

六年前她的丈夫和两个孩子出海捕鱼，至今没有回来。

(4)从那时起，乌米便每天坐在自家土屋的门槛上，望着大海歌唱，等待着自己的亲人。

一次，我去看她。

我沿着蜿蜒的小道，经过几个伫立在山坡上的土屋，穿过一个个果园和葡萄园，爬上了高山。

在山石背后翠绿树丛中，我看到了乌米老太婆的那所半坍塌的土屋。

在从亚伊拉山顶滚下的巨石中间，长着几株法国梧桐、无花果树和桃树。

溪水潺潺地流着，在它流过的地方形成许多小小的瀑布，土屋顶上长着青草，墙上爬着曲曲弯弯的藤蔓，屋门正对着大海。

(5)乌米坐在门旁的石头上，她的身材匀称颀长，白发苍苍。

她那布满细小皱纹的脸，已被太阳晒成了棕褐色。

层层叠叠的石堆，年久失修的半塌的土屋，在炎热的蓝天衬托下的阿伊——佩特里山的灰色峰顶，以及在太阳照耀下寒光熠熠的大海，所有这一切在老人周围形成了一种肃穆静谧的气氛。

2020届上海市外国语大学附属大境中学高三英语上学期期中试题及参考答案

2020届上海市外国语大学附属大境中学高三英语上学期期中试题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AThree Things to Do Before You Are 18Are you bored with your daily life? Here are some things you should try before you are 18.★Learn to swimSeriously, this is so important that it can save your life. If you can’t swim well, you won’t be able to dowater sports like waterskiing, surfing and diving. Even taking a boat trip will be dangerous for you. Make sure you do it.★Try at least one kind of team sportsBeing a good team player is an important skill in life. You can’t just think of yourself, but have to work well with other people. Other advantages of team sports like basketball, football and baseball are that they keep you fit and healthy, and they are also great fun. Teams usually have a good social life too—you’ll go to lots of parties and make many friends.★Collect somethingOne of the best hobbies for under-18s is collecting things. You could collect kinds of stamps, or you could collect things that make you remember what you have done, like cinema tickets for films you have seen or letters from friends. The best way to collect is to have a special album to put your collection in and to write what each thing means to you. That way you won’t forget.1. The most important reason for learning to swim is that ________.A. you might feel wellB. it can make you healthyC. you might easily do lots of thingsD. it can save your life2. The writer tells us that one of the best hobbies is to ________ .A. collect somethingB. do some water sportsC. send letters to your friendsD. play basketball with your friends23. The passage is mainly about ________before you are 18.A. good habits to keepB. skills to haveC. things to doD. sports to playBOne billion people in the world are short of water. How can this problem be solved. Some suggestions have been to desalinate ocean water or to build enormous water pipelines from areas where water is abundant. (Suggestions such as these prove extremely expensive when they are actually used.) One possibility that scientists are considering is pulling icebergs from either the North Pole or the South Pole to parts of the world with a water shortage. Although many questions must be answered before such a project could be tried, moving icebergs seems a reasonable possibility in the future.Engineers, mathematicians, and glaciologists from a dozen countries have been considering the iceberg as a future source of water. Saudi Arabia is particularly interested in this project because it has a great water shortage. Scientists estimate that it would take 128 days to transport a large iceberg (about 1/2 square mile) to Saudi Arabia. Yet the iceberg would be completely melted by the 104th day. Therefore, insulation would be essential, but how to insulate the iceberg remains an unsolved problem.The problems in transporting an iceberg are numerous. The first problem is choosing the iceberg to pull. The icebergs that form in the North Pole are quite difficult to handle because of their shape. Only a small portion extends above the water — most of the iceberg is below the surface, which would make it difficult to pull. South Pole icebergs, on the other hand, are flat and float like table tops. Thus they would be much easier to move.How can a 200-million-ton iceberg be moved. No ship is strong enough to pull such enormous weight through the water. Perhaps several ships could be used. Attaching ropes to an iceberg this size is also an enormous problem. Engineers think that large nails or long metal rods could be driven into the ice. What would happen if the iceberg splits into several pieces during the pulling. Even if an iceberg with very few cracks were chosen, how could it be pulled through stormy waters. Furthermore, once the iceberg reached its destination, very few ports would be deep enough to store it.All of these problems must be solved before icebergs can become a reasonable source of water. Yet scientists estimate that it will be possible to transport them in the near future. Each year, enough icebergs form to supply the whole world with fresh water for a full year. In addition, icebergs are free and nonpolluting. As a solution to the world’s water problems, icebergs may be a workable possibility.4. What is a problem in transporting iceberg?A. The size of the iceberg.B. The colour of the iceberg.C. The salt in the iceberg.D. The movement of air and water.5. What is the author’ attitude towards transporting iceberg?A. Pessimistic.B. Objective.C. Optimistic.D. Unconcerned.6. What does the last paragraph mainly tell us?A. It is hard to use iceberg.B. Iceberg are a good choice.C. There are problems with iceberg.D. Man finds no other ways to solve water shortage.7. What can be a suitable title for the text?A. Shortage of water.B. Icebergs for water.C. Scientists and icebergs.D. Iceberg—scientists headache.CAs a rider, Anna Kiesenhofe’s Olympics victory might be a surprise. The winner of the road race at the Tokyo Olympics left the sport at the end of 2017 when she found herself out of contract (合同). She came into Tokyo without a professional team and left as an Olympic champion.The 30-year old began her cycling career in 2014 after running injuries that prevented her from continuing her pursuits of triathlon (铁人三项). She later joined a Catalan team and won the Spanish National Cup in 2016.The then-26 year old signedher first professional contract with Lotto Soudal Ladies for the following season. However, she ended her 2017 campaign in April and did not sign a contract for 2018, eventually taking a year off the bike. In 2019, Kiesenhofer came back to the sport as a rider, winning the Austrian national road race. Despite her results, Kiesenhofer sill had no professional contract while going into the Tokyo Olympics.Kiesenhofer was the first rider to attack in the Olympic road race, eventually forming a breakaway along with Carl Oberholzer, Omer Shapira, Vera Looser and Anna Plichta, which went on to reach a gap of 11 minutes. After Looser and Oberholzer were dropped, Kiesnhofer ataced her two remaining breakaway companions.After Shapira and Plichta were caught by the peloton (主车群), the rest of the riders seemed to believe that they were racing among themselves for Gold, not knowing that Remehofere was still in front. While it might be a misjudgment from the rest of the peloton that allowed Kiesenhofer to keep her lead of more than two minutes, other riders’ mistakes should not detract from the Austrian’s efforts.Off the bike the new Olympic Champion has a PhD in mathematics after studying at the Technical University of Vienne as well as at Cambridge University. She currently works at the University of Lausanne.8. Why did Anna give up triathlon?A. She got injured.B. She lost interest in it.C. She had to attend university.D. She never won a medal.9. Which is the right order of the following events?①She ended her campaign.②She took a year off the bike.③She began her cycling career.④She won the Austrian national road race.⑤She won the Spanish National Cup.A. ③④①②⑤.B. ②③④①⑤.C. ③⑤①②④.D. ④②③①⑤.10. What were the riders of the peloton unaware of at the Tokyo Olympics?A. The road race was so difficult.B. Anna was a new rider.C. They had caught up with Anna.D. Anna took the lead of them.11. What is Anna’s present job?A. A cycling coach.B. A university teacher.C A professional rider. D. A college student.DHave you ever been on social media and seen your favorite celebrity talking about a product? These promotions might not be totally random, and are actually seen as a vital part of the marketing process. The question is: How do social media influencers ‘influence’ what you buy?Human desire for status and making friends, combined with our need to belong to a group, makes us receptive to being ‘socially influenced’. Companies often use that desire to have a similar lifestyle to a celebrity we admire to sell or launch a product. So, what do these promotions actually do?Firstly, they can be used to build brand awareness. A social media influencer should have a strong understanding of the platform they operate on, and therefore can create appealing content that not only sticks to the brand image, but sparks their followers’ interests in a product they might never have seen before.Secondly, influencers can improve a company or product’s relationship with their customer base. According to InMoment’s 2018 US Retail CX Trends Report on customer loyalty, 77% of buyers have been brand loyal for more than ten years. This is also true of 60% of millennials. A popular celebrity can target key customers and talk or blog about a product, which can create an instant and lasting bond with them.Lastly, influencers can improve customer buying habits with seemingly ‘unbiased opinions’. We are more likely to respond to ‘peer recommendation’ than traditional ads, meaning the fact we see an influencer as a ‘friend’ can make us less likely to be doubtful about what we are seeing.So, the next time you see a celebrity talking about a product, you might want to consider that this could be a carefully worked-out marketing strategy designed to target your core needs. If you find yourself examining a product you’ve seen on social media, you may well have been influenced.12. Why do companies invite celebrities to launch products?A. Because celebrities can improve the companies’ public images.B. Because consumers like to share similarity with celebrities.C. Because celebrities want to make more money.D. Because consumers can make friends with celebrities.13. According to the passage, which strategy is often used by influencers?A. Setting up operation platforms.B. Sending gifts to customers.C. Improving relationship with the company.D. Taking advantage of their popularity.14. To customers, the recommendations of influencers seem to be ________.A. offensiveB. subjectiveC. objectiveD. misleading15. The passage is mainly about ________.A. how social media make adsB. how social media influence our lifestyleC. how social influencers affect our buyingD. how celebrities earn fame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。

上海外国语大学附属大境初级中学2020年11月月考单元测试

上海外国语大学附属大境初级中学2020年11月月考单元测试一、选择题1．自由下落的物体第n s内通过的位移比第(n－2)s内通过的位移多A．3(n+2)m B．4.9(2n+1)m C．19.6m D．221 nnm2．小刚同学看新闻时发现：自从我国采取调控房价政策以来，曾经有一段时间，全国部分城市的房价上涨出现减缓趋势。

小刚同学将房价的“上涨”类比成运动中的“加速”，将房价的“下降”类比成运动中的“减速”，据此类比方法，你觉得“房价上涨出现减缓趋势”可以类比成运动中的（）A．速度增大，加速度减小 B．速度增大，加速度增大C．速度减小，加速度减小 D．速度减小，加速度增大3．下列关于重力说法中正确的是A．重力的方向一定竖直向下，可能指向地心B．物体的重心一定在其几何中心C．物体的重力总等于它对竖直测力计的拉力D．把地球上的物体移到月球上，物体的质量和所受重力变小4．若已知物体的速度方向和它所受合力的方向，如图所示，可能的运动轨迹是( ) A．B．C．D．5．关于重力、重心下列说法中正确的是（）A．风筝升空后，越升越高，说明风筝的重心相对风筝的位置也越来越高B．质量分布均匀、形状规则的物体的重心一定在物体上C．舞蹈演员在做各种优美动作的时候，其重心相对身体的位置不断变化D．重力的方向总是垂直于地面6．关于速度的描述，下列说法中正确的是A．京沪高速铁路测试时的列车最高时速可达484km/h，指的是瞬时速度B．电动自行车限速20 km/h，指的是平均速度C．子弹射出枪口时的速度为500m/s，指的是平均速度D．某运动员百米跑的成绩是10s，则他冲刺时的速度一定为10m/s7．两个小球从两个不同高度处自由下落，结果同时到达地面，如图所示四幅图中，能正确表示它们的运动的是（）A．B．C．D．8．下列情形中的物体可以看作质点的是( )A．跳水冠军郭晶晶在跳水比赛中B．一枚硬币用力上抛，猜测它落地时是正面朝上还是反面朝上C．奥运会冠军邢慧娜在万米长跑中D．花样滑冰运动员在比赛中9．2018 年 10 月 23 日港珠澳大桥正式通车，它是目前世界上最长的跨海大桥，为香港、澳门、珠海三地提供了一条快捷通道。

2019-2020学年度第一学期上海外国语大学附属大境初级中学沪教版七年级第一学期数学期中测试卷(Word版)

2019学年黄浦区大境初级中学七年级（上）数学期中试卷一、选择题:(本大题共6题，每题3分，共18分1.代数式21-χ的值为0时，χ的值是··········································（） A.-1 B.1 C.0 D.22.下列从左到右的变形中，属于因式分解的是·······························（） A.2x xy 62)3y (+=+χ B.3)4(342+-=+-x x x xC.)8(8223-=-x x x xD.22))((a x a x a x -=-+3.计算)()(53x x -∙-等于··········································（）A.8xB.8x -C.15xD.15x -4.多项式的值是是一个完全平方式，则k k x x +-102········（）A.4B.25C.5±D.25±5.多项式分别是的二次项系数与一次项1432--x x ·····················（）A.3,-4B.34,2-xC.x 4,3-D.x x 4,32-6.多项式的值一定是82422+--+y x y x ···················（） A.正数 B.非正数 C.负数 D.非负数二、填空题7、示：的差的平方用代数式表倍与的b 311a 8、单项式是32-323y x 次单项式 9、把多项式的降幂排列是按x x xy x 53125-322+-+ 10、若单项式=--n m 2a a 21-82412是同类项，则与m m n b b11、===+y x y x a a ,3,2a 则12、计算=-∙2232)3(21-xy y x ）（ 13、计算=-∙-+)43(13254-22xy xy y x ）（ 14、计算（4a-3b ）(-4a-3b)=15、计算：2）c -b -2a （= 16、因式分解：=-+-)(918m 2a b m b a ）（17、已知 ==∙-++x x x x 则,623321118、若=-==+y x xy y 2,25,125422则χ19、若=-+=-+)5(6a ,31a 2a a ）则（ 20、已知=++++∙∙∙++=++1,0123201820192x x x x x x x 则三、简答题（本大题共有6题，每题5分，满分30分）21、[]32236)2()3(2a -a a --+--）计算（22、)32)(2()2)(2m n m n m m n n +----计算：（23、计算：)423(423-++-y x y x ）（24、简便计算：10.5×9.5×100.2525、因式分解：)2)(32()3(2x y y x y x y x -+-+-）（26、因式分解:2222)42(2y x x x +-+）（四、解答题(本大题共4题，共24分)27、2)1(4)43)(43()3(25---+≥+-x x x x x ）（解不等式28、项和的计算结果中不含）已知（x x x x x n mx x 2323)23(+-++ （1）求m 、n 的值（2）当吗m 、n 取第（1）小题的值时，化简并求（m+n ））的值（22m n mn +-29、y x y x x B y x xy x A --+-=+--=324,232222（1）求B-2A(2)若的值求且a ,a 2,09622=-=+++-A B y y a x30、已知A 、B 两个边长不等的正方形纸片并排放置(如图所示)(1)若m ＝8，n ＝2，则甲、乙两个正方形纸片的面积之和为:(2)用m 、n 表示甲、乙两个正方形纸片的面积之和为:(3)若A 、B 两个正方形纸片的面积之和为：913 ，且右下图中阴影部分的面积为：32，则m= n=。

2020年上海市外国语大学附属大境中学高三英语期中考试试卷及参考答案

2020年上海市外国语大学附属大境中学高三英语期中考试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ABrooklyn Botanic GardenBrief IntroductionThe Brooklyn Botanic Garden (BBG) was acquired by the city of Brooklyn in 1854 along with the land that is Prospect Park.There are so many gardens on display at the BBG that is honestly hard to keep count ofthem. There’s the Japanese Hill and Pond Garden, the Osborne Garden, the Shakespeare Garden... you get the point. Each garden that is displayed will be showing off a different group of amazing plants that come m all sorts of color1 s and sizes. The Brooklyn Botanic Garden offers something for the entire family. They even have a Children’s Garden for the little ones.AttractionsJapanese Hill and Pond GardenOne of the most frequency visited gardens at BBG, the Japanese Hill and Pond Garden is certainly a favorite among visitors. This garden features a variety of styles as well as beautiful scenery with a viewing pavilion (亭子) and a waterfall. The Shogun Lantern featured in the Japanese Hill and Pond Garden is over 500 years old. It was given to the Brooklyn Botanic Garden as a gift from the city of Tokyo.Children’s GardenChildren have been planting plants at the Brooklyn Botanic Garden since 1914 and continue their efforts today. Currently, there are over a thousand children contributing to the Children’s Garden.Shakespeare GardenFor those who have fallen in love with the works of Shakespeare, this will be a garden that they can truly appreciate. Over 80 plants that have been mentioned in the writing of Shakespeare currently grow in the Shakespeare Garden.Getting to Brooklyn Botanic GardenBrooklyn Botanic Garden: 900 Washington Avenue, Brooklyn, NY 11225Closest Subway: Prospect Park/ Eastern Parkway/ Franklin AvenueBus Tour Stops: Stop 34 or 35 Brooklyn routeOpening Times15 March— 6 November：Tuesday—Friday: 8:00 am—6:00 pm; Saturday—Sunday: 10:00 am—6:00 pm8 November —11 MarchMonday—Friday: 8:00 am—4:30 pm; Saturday —Sunday: 10:00 am—4:30 pm1.Where can visitors enjoy a waterfall?A.Osborne Garden.B.Shakespeare Garden.C.Children’s Garden.D.Japanese Hill and Pond Garden.2.How can visitors go to the Brooklyn Botanic Garden?A.By taking a bus to Prospect Park.B.By taking a bus to 34 Washington Avenue.C.By taking the subway to Franklin Avenue.D.By taking the subway to Stop 35 on the Brooklyn route.3.When can Nancy visit the Brooklyn Botanic Garden in December?A.5:00 pm on Thursday.B.8:30 am on Wednesday.C4:3 0 pm on Friday. D.9:00 am on Saturday.BNowadays organic food hasbecome a fashion. Organic food sales reached a record of $ 45.2 billion in 2017, making it one of the fastest-growing parts of American agriculture. Some people may buy organic food for these reasons like resource cycling and biodiversity, but most people may choose organic food because they think it's healthier. While a small number of studies have shown relationships between eating organic food and reducing risks of being ill, no studies, up to now, have answered the question whether eating organic food can improve health.According to the United States Department of Agriculture(USDA), organic food does not suggest anything about health. In 20155 Miles McEvoy, then chief of the National Organic Program for the USDA, refused to admit any health benefits of organic food, saying the question has nothing to do with the National Organic Program. Instead, the USDA thinks that organic refers to a production method that increases cycling of resources keeps ecological balance, and protects biodiversity.I'm an environmental health scientist who has spent over 20 years studying pesticides that do harm to human beings. Several years ago, I was part of the study on whether an organic diet can reduce pesticide exposure. This study focused on a group of pesticides which have always been harmful to children's brain development. We found that children who ate traditional diets had nine times higher exposure to these pesticides than children who ate organic diets.Last month, I published a small study that suggested a path forward to answering the question whether eating organic food actually improves health. My study got a lot of attention. While the results were novel, they didn't answer the big question. As I toldThe New York Timesin 2003, “What does this really mean for the safety of my kids? But we don't know. Nobody does. It was true then, and it's still true now.”4. Why do most people prefer to buy organic food?A. For its health benefits.B. For biodiversity.C. For its delicious taste.D. For resource cycling.5. What does the USDA suggest about organic food?A. It can improve people's health.B. It is produced in an environment-friendly way.C. It can reduce risks of being ill.D. It has nothing to do with the National Organic Program.6. What can be concluded from the author's study?A. Pesticides don't harm children's brain.B. Traditional diets benefit people's health.C. Organic diets can reduce pesticide exposure.D. The results are meaningful to children's safety.7. What is the best title for the text?A.What Is Organic Food?B. Is Organic Food Healthier?C. How Should We Avoid Pesticides?D. What Are the Benefits of Organic Food?CTen years ago, I set out to examine luck. I wanted to know why some people were always in the right place at the right time, while others consistently experienced ill fortune. I placed advertisements in national newspapers asking for people who felt consistently lucky or unlucky. Hundreds of extraordinary men and women volunteered for my research. Over the years I have interviewed them, monitored their lives and had them take part in various experiments.In one of the experiments, I gave both lucky and unlucky people a newspaper, asking them to look through it and tell me how many photographs were inside. I had secretly placed a large message halfway through the newspaper, saying, “Tell the experimenter you have seen this and you will win $50.” This message took up half ofthe page and was written in type that was more than two inches high. It was staring everyone in the face, but the unlucky people tended to miss it and the lucky people tended to spot it.Unlucky people are generally more nervous than lucky people, and this anxiety affects their ability to notice the unexpected. As a result, they miss opportunities because they are too focused on looking for something else. They go to gatherings concentrating on finding their perfect partners and miss opportunities to make good friends. They look through newspapers determined to find certain types of job advertisements and miss other types of jobs.Lucky people are more relaxed and open, and therefore see what is there rather than just what they are looking for. My research eventually showed that lucky people are skilled at noticing opportunities, make lucky decisions by listening to their intuition (直觉), are open to new experiences, and adopt a never-say-die attitude that transforms bad luck into good luck.8. What’s the purpose of the author’s research?A. To discover what luck means to people.B. To find lucky people and unlucky people.C. To distinguish between good luck and bad luck.D. To figure out why people are always lucky or unlucky.9. Why did the unlucky people miss the message in the experiment?A. There was too much information to be read in detail.B. They were too focused on looking for photographs.C. It took too much time to go through newspapers.D. The words were too small to be noticed.10. What leads to lucky people’s good fortune?A. Their ability to spot opportunities.B. Their ability to become relaxed.C. Their ability to communicate.D. Their ability to make friends.11. What’s the key message of the last paragraph?A. What lucky people are looking for.B. How lucky people generate good luck.C. What lucky people can do with opportunities.D How lucky people transform bad luck into good luck.DTo stay healthy and fit, Chinesestudents do group exercises every day at school. Most of you probably do the same set of exercises. But some school exercises have grown popular online due to their local and innovative designs.Singing in Sichuan dialects with energetic movements and unique mask-changing is not just a Sichuan Opera performance. It’s the routine exercise for students of Mianyang Foreign Languages Experimental School in Sichuan province.“Sichuan Opera is a local opera, and it is now facing a gap in inheritance (传承). Therefore, we cooperated with Mianyang Intangible Cultural Heritage Center to create a simple and easy-to-learn Sichuan Opera exercise,” said Shen Junhua, who is in charge of organizing the school’s exercise between classes.According to Shen, this new type of exercise has been practiced since 2017 and has been popular among students. When students enroll (入学), they will spend several weeks practicing it. At present, almost all of the students and teachers have mastered it.“In fact, we had hardly heard of Sichuan Opera before teachers taught us how to do the Sichuan Opera exercise,” said Li Yangwenwen, 14, an eighth grade student who also joined the school’s Sichuan Opera club out of interest. “It’s very different from normal exercises. After practicing it, we found it very beautiful and became interested in it. Now, almost all of the students look forward to our daily exercise time and feel excited to do it.”“By combining opera with daily exercise, the daily class activity allows students to perceive and understand Sichuan Opera’s culture”, Shen said. “After years of continuous effort to spread the seeds of traditional culture, the younger generation is finally catching on.”12. What do students in Shen’s school do during the group exercise?A. They do normal exercise .B. They sing pop songs in Sichuan dialects.C. They do mask-changing in a Sichuan Opera performance.D. They combine group exercise with Sichuan Opera.13. Why do they adopt the new type of exercise?A. To attract new students to the school.B. To inherit local culture.C. To create an easy-to-learn exercise.D. To make the school’s group exercise popular.14. How do teachers and students react to the group exercise?A. Calm.B. Indifferent.C. Enthusiastic.D. Uninterested.15. What can we learn from the last paragraph?A. Shen’s continuous effort is highly praised.B. The younger generation will have a stronger body.C. The students can better understand their local culture.D. Students help to spread the seeds of traditional culture toyounger generation.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届上海市外国语大学附属大境中学高三英语上学期期中考试试题及答案

2020届上海市外国语大学附属大境中学高三英语上学期期中考试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ASevenhugs HugOneDo you want to improve the quality of your sleep? Sevenhugs has created HugOne that tracks different sleep patterns to help families consistently rest better. There are dozens of devices and tools devoted to monitoring the sleep. But, HugOne is the world’s first family smart home sleep system, which integrates a calculation rule for sleep patterns of children and adults.HugOne is a well-designed product, full of a sense of science and technology. It connects to a number of smaller sensors called “minihugs”, which are placed on the edge of each bed. They monitor the sleep patterns and other data coming from the person sleeping in that bed. The data arethen sent to an app on the smartphone.● The benefits of HugOne include:* Having a smart alarm clock on the app as HugOne learns your sleep cycle and automatically sets and sounds to when the best moment in your sleep cycle is identified.* Monitoring temperature and humidity in your bedroom as well as indoor air quality for the main living space.* Linking with smart lamps and thermostats, allowing users to fall asleep with sunset light and preferred nighttime temperatures, and wake up to sunrise light and preferred daytime temperatures.* Ensuring safety from electronic transmissions when you sleep-when the minihug senses a presence in bed, it shuts off its electronic transmissions and starts recording sleep data and sending them to the app.● The following are selected from customers’ comments:I prefer HugOne, since it’s convenient to use. I simply place the minihug in the corner of my bed under the sheet and it goes to work monitoring my sleep cycle. It’s really good.—Robert Compton● HugOne available for purchase includes:I think HugOne is a humanized product. It’s shareable, and I’ve connected eight minihugs to the HugOne base in my house. All my family members think highly of it.—Chris Hanawalt HugOne will provide maximum protection for your sleep. If you want to get more detailed information, please call the sellers at 1-800-576-1899 or .Style: Sleep Tracking System＋2 Sleep SensorsColour: Blue＋Rose1. How does HugOne effectively work?A. It controls sleep patterns automatically.B. It creates smart systems for a better sleep.C. It collects sleep data through the minihugs.D. It makes a calculation of the data sensors need.2. According to the passage, HugOne can ______.A. adjust temperature, humidity and air quality in bedroomsB. update the sleep cycles by aid of an alarm clock on the appC. record sleep data when there are electronic transmissions in bedD. help users fall asleep and wake up naturally with preferred temperatures3. The passage is made more believable by ______.A. providing statisticsB. drawing a comparisonC. giving a demonstrationD. using recommendationsBWhen Alex Linwas 11 years old, he read an alarming article in the newspaper, which said that people were burying old computers in backyards, throwing TVs into streams, and dumping (丢弃) cell phones in the garbage. This was dangerous because e-waste contains harmful chemicals that can leak into the environment, getting into crops, animals, water supplies and people.Alex was really worried and decided to make it next project for WIN-the Westerly Innovations Network. Alex and six of his friends had formed this organization to help solve community problems two years before.But what could they do about this project with e-waste? The team spent several weeks gathering information about the harmful chemicals in e-waste and their effects on humans. They learned how to dispose(处置) of e-waste properly and how it could be recycled. Then, they sent out a Survey and found only one in eight know what e-waste was, let alone how to properly dispose of it.Alex and his friends went into action. They advertised in the local newspaper and distributed notices tostudents, asking residents to bring their unwanted electronics to the school parking lot. The drive lasted two days, and they collected over 9, 500 kilograms of e-waste. The next step was to set up a long-term e-waste drop-off center for the town. After some research, they’d learned that reusing is the best way to deal with electronic devices and it is seven times more efficient than recycling. So, they began learning to retrofit (翻新) computers themselves and distributed them to students who didn’t have their own. In this way, they could help students in the area and protect the environment at the same time.For a lasting solution to e-waste, the drop-off center wasn’t enough. Lawswould have to be passed. In 2016, WIN helped push for an e-waste bill in their town, which required companies that manufactured or sold electronics to take back e-waste. The bill clearly forbids the dumping of e-waste. Because of the work of WIN, more and more people, like Alex and his team, are getting the message about safe disposal of e-waste. As Alex says, “Today’s technology should not become tomorrow’s harmful garbage.”4. What was Alex’s worry after he read the article?A. The littering of e-waste.B. The recycling of plastic.C. The change of environment.D. At 11 p.m. on Monday.5. What did Alex do to start the project?A. Set up WIN.B. Collect information.C. Ask friends for help.D. The overuse of old computer.6. Which can best describe the way Alex and his team did their work?A. Traditional.B. Competitive.C. Scientific.D. Convenient.7. What message does the story convey?A. There is no end to perfection.B. success comes through failure.C. Every positive attitude has a reward.D. young people can make a big difference.CDid you know that the average child has heard the word "no" over 20,000 times before they turn the age of three? Ironically, it is also around this time that children begin to develop enough personal character to refuse to obey. The "terrible twos" are categorized by a lack of understanding. Somewhere between three and four, children begin to acquire the skills to reason. It is during this time they watch how other children and adults reason. If we're not careful, the children will watch us model a world of "NOs".By the time a person turns eighteen, how many times have they been told no? I haven't found any studies that even attempted to track this statistic, but I'm sure if the number is 20,000 by three, then at eighteen thatnumber has multiplied. You can do the math.Anyway, I think I know why we say no. We say no to protect. We say no to direct. We say no to stop potential confusion. However, do we sometimes say no just for the sake of saying no? Do we say no because we have internalized(内在化)all of the "NOs" we've heard over the years and we feel it is finally our time to say no to someone else?The internalized no can damage the growth process of dreams in infancy as quickly as it can weaken a three-year-old. And we wonder why we run intopeople with big, un-accomplished dreams who have a bit of a chip on their shoulder. They have to take on the 20,000 NOs. However, the thing that keeps them going is the possibility of the power of ONE YES! Just as it only takes one book to make a writer a Pulitzer Prize Winner, it only takes one word to change the course of your day. That word is YES!8. What do we know about two- year- olds?A. They understand well.B. They often say no to others.C. They think logically.D. They don't do all they're told.9. What effect does saying no have on children?A. They lose all their dreams.B. They aren't easy to succeed.C. They don't make mistakes.D. They never say yes to others.10. Which word best describes the author's attitude to a world of "NOs"?A. Tolerant.B. Disapproving.C. Favorable.D. Carefree.11. What is the text?A. A how-to guide.B. A survey report.C. An opinion essay.D. A short story.DKenyan mother Beth Mwende heard her sleeping child cry out, but did not worry after the three-year-old quickly quietened down. The next morning, however, she found her daughter, Mercy, nearly unconscious with two bite marks in the neck. “I didn’t know that it was a snake,” Mwende said.Although snakebites are common in her hometown, antivenom medication is difficult to get. Mwende lives about 160 kilometers east of Nairobi, Kenya’s capital. So she took her daughter to a traditional healer. He placed stones over the bites. Mercy died within hours. She was one of about 700 Kenyans killed by snakebites each year, notes a report in the scientific publicationToxicon.The Kenya Snakebite Research and Intervention Center (KSRIC) is working to change that. The KSRIC hopes tohave East Africa’s first antivenom medication on the market within five years. It estimates the cost will be about 30 percent of an imported product, which often sells for about US $ 30.More than 70, 000 people are bitten in East Africa each year. Climate change and deforestation are worsening the problem as snakes get pushed out of natural surroundings into populated areas.Nearly 100 snakes live at the research center in a forest near Nairobi. Researchers take venom from snakes and study it before injecting small amounts into other animals, such as sheep. The animals then create antibodies that can be made into antivenom.“Up to now, no one has made any kind of antivenom in Kenya,’’ said Geoffrey Maranga Kepha, a senior snake handler.Two effective antivenoms are available in Kenya, from India and Mexico, the center says.The center is teaching communities that using antivenom immediately after receiving a snakebite can save lives, said head researcher George Adinoh.“After seeing how people died in Kenya from snakebites I decided to devote my life to coming up with a rescue measure that will help or prevent people from dying from snakebites,” snake handler Kepha added.12. How does the author introduce the topic of the text?A. By telling a story.B. By listing figures.C. By referririg to documents.D. By making a comparison.13. Why did Mwende take her daughter to a traditional healer?A. She couldn’t afford any modern treatment.B. She lived where antivenom medication is not available.C. The traditional way is very effective to treat snakebites.D. She believed a traditional healer could cure her daughter.14. What is causing more snakebites to happen in East Africa?A. Lack of antivenom medication.B. Environmental damage and climate change.C. People’s low awareness of the danger of snakes.D. People’s pursuit of traditional cures for snakebites.15. What do we know about antivenom in Kenya from the text?A. Itis taken from antibodies of sheep.B. There is only one effective antivenom available.C. KSRIC is trying to develop a local antivenom now.D. People refuse to use antivenom after being bitten by snakes.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。

【学生卷】上海上海外国语大学附属大境初级中学小学英语六年级上册期中经典练习卷

一、单选题1．( 2分 ) —________can I get to the museum?—By bus.A. WhenB. HowC. What2．( 2分 ) I am going to the supermarket ________my mother.A. orB. withC. and3．( 2分 ) You can learn new words from the___________.A. storybookB. dictionaryC. postcard4．( 2分 ) My home is near here, so ___________come here.A. on footB. by trainC. by plane5．( 2分 ) He is a_____________. He works at sea. He sees lots of sh every day.A. postmanB. fishermanC. businessman6．( 2分 ) 读句子，按意义选择正确的句子切分方法（）A. They pull Robin/ out of the mud.B. They pull/ Robin out of the mud.7．( 2分 ) — What is Amy's hobby?— __________________A. I like drawing.B. She likes drawing.C. She lives in Canberra.8．( 2分 ) I'm ill and my mum is ______________.A. worriedB. angry9．( 2分 ) （2020六上·瓯海期末）They often ________________ on the weekend.A. go hikingB. have a picnicC. watch TV10．( 2分 ) （2020六上·黄岩期末）— Mark, beef is ready!— Thank you, Mum. Please pass ______________ a knife and a fork.A. myB. meC. I11．( 2分 ) （2020六上·黄岩期末）— Excuse me. ______________ can I get to the bank? — You can get there by taxiA. HowB. WhereC. What12．( 2分) （2020六上·莲都期末）—_______________ Oliver visit his grandparents every weekend?— Yes, he loves them very much.A. DoB. DoesC. Is二、选词填空13．( 1分 ) （2020六上·婺城期末）Maybe our cat ________ (chases/ is chasing) a mouse now. 14．( 2分) （2020六上·婺城期末）Ben ________ (does/ doing) kung fu every evening. We often ________ (do/ does) kung fu together.15．( 5分) （2020六上·广水期末）阅读短文，根据上下文意思，选择适当的词，用其正确形式填空。

2020年上海市外国语大学附属大境中学高三英语上学期期中考试试卷及答案

2020年上海市外国语大学附属大境中学高三英语上学期期中考试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ADon’t know where to enjoy yourself? Here are some choices for you.Santa Cruz Mission State Historic ParkPopUp Picnics in the park return for the fourth summer in a row, taking place on Thursdays. Take a break to enjoy tacos (墨西哥玉米薄饼卷). Prices changefrom $ 2 to $ 10. Cash only.144 School Street June 13-August 15 Start at 11:30 am and end at 1:30 pmThe Crow’s NestEach summer on Thursday evenings the Crow’s Nest offers its Summer Beach Party series on the beach. The party starts at 5:30 pm each week and goes until sunset. Families are welcome, and there is no entrance fee. After the sun sets, the fun begins with dancing to the best live music of local bands.2218 East Cliff Drive May 30-August 29 Start at 5:30 pm and end at 8:30 pmBargetto WineryJoin us for a beautiful weekend of art and wine. Bargetto Winery will be hosting their yearly gathering of artists and foodies（美食家）at their amazing Soquel winery. No entrance fee. Wine tasting with purchase of $ 15 festival glass. 3535 North Main StreetJuly 20 - July 21 Start at 11:00 am and end at 5:00 pmChaminade Resort & SpaChef Page takes guests on a journey showing the area rich fruits, vegetables, and meats. Dinner begins at 6:30 pm with a five-course menu and good wines. Seating booked is not a choice, as all guests are seated at large, connecting, beautifully set tables designed to invite open conversations among guests. Ticket price: $ 90 per person. Tickets can be gotten online.Chaminade Lane July 26 Start at 6:00 pm and end at 9:00 pm1. What can we know about PopUp Picnics in the park?A. It lasts two days.B. It is held on Thursdays.C. It has been held twice.D. It can be paid in credit card.2. What can people do in the Crow’s Nest?A. Enjoy tacos.B. Talk with artists and foodies.C. Watch the sunrise on the beach.D. Watch the performance of the bands.3. Which activity can be booked on the Internet?A. The Crow's Nest.B. Bargetto Winery.C. Chaminade Resort & Spa.D. Santa Cruz Mission State Historic Park.BSophie became friends with the gray squirrels during her first week atPennState, after spotting them running around and wondering what they would look like with tiny hats on their heads. Today, everyone at the university knows her as the “Squirrel Girl”.Sophie tried bringing them food, and gradually they began to trust her. She managed to put a hat on a squirrel and take a picture. Thinking that her colleagues could do with something to lift their spirits, she started posting similar photos on Facebook. The response was greatly positive, and before long Sophie and her squirrels became an Internetsensation.Growing up in a neighborhood outside ofState College, Sophie was always fond of birds and animals around her home, but she didn't interact with people very much. She was later diagnosed (诊断) with Asperger's syndrome, but the squirrels changed that. “The squirrels help me break the ice, because I'll be sitting here patting a squirrel and other people will come over and well just start like feeding the squirrels together and chatting about them,” she said, “I am a lot more outgoing.”And in case you're wondering how Sophie is able to get the squirrels to do what she wants for her photos, it has a lot to do with food. For example, whenever she wants them to hold or play with something, she puts peanut butter on the prop (道具), and they'll grab it. In the beginning, she would throw peanuts up the trees on campus and invite the squirrels to come down and get them, but they hesitated to approach her. She had the patience to earn their trust, though.This year, Sophie is graduating with a degree in English and wildlife sciences. She wants to be a science writer and educate people on how to preserve the environment. As for her furry friends, Sophie plans to stay in the area and visit them as often as she can.4. What does the underlined word “sensation” in paragraph 2 mean?A. Event.B. Hit.C. Service.D. Addiction.5. What can we learn about Sophie according to paragraph 3?A. She got lots of friends due to squirrels.B. She used to be a popular girl in her childhood.C. She lived in the far countryside when young.D. She was more outgoing than before.6. How did Mary manage to take photos of squirrels wearing hats?A. By attracting them with food.B. By putting them in cages.C. By playing music to them.D. By dressing like squirrels.7. What do you think of Sophie?A. Tolerant and capable.B. Sociable and aggressive.C. Patient and caring.D. Indifferent and appreciative.CThe outbreak of the novel corona virus pneumonia (NCP) has disrupted the lives and work of nearly every Chinese person. However, a new trend has been on the rise: many have turned themselves into livestreaming users orfollowers.According to Questmobile, a professional big data intelligence services provider in China, the audience for Douyin, Kuaishou and other livestreaming platforms surged to 574 million during the Spring Festival holiday, up 35 percent from 2019.Confined at home, away from their friends and loved ones, people turn to livestreaming to reach out to the world. For them livestreaming can help them share their lives and interest with a global audience, which will give them the sense of being “in the moment”. Even as viewers, they can also engage immediately with livestreamers by commenting and making suggestions.“When I comment on the livestreaming videos, I’m not simply an audience member, but also an active part of the program. That gives me a sense of engagement,” an Internet user named Wang Hao told People’s Daily.Livestreaming is not only for fun, but also a new tool for many businesses. Affected by the pandemic, many businesses had to stop their sales in physical stores. To meet their business goals and survive during these trying times, many chose to livestream to revive their businesses.Joyoung, a leading maker of small kitchen appliances, is a good example. The company not only added a number of broadcasts each day to advertise their products, but also shared the menus that were beneficial to health. “The responses to our livestreaming shows have been well beyond expectations,” Kang Li, who overseesthe company’s livestreaming unit, told China daily. “It’s a natural opportunity to truly bond with our followers.”Like it or not, livestreaming is likely to go mainstream in China for both entertainment and business.8. What is the purpose of writing the second paragraph?A. To introduce some popular livestreaming platforms in China.B. To report data on the development of livestreaming in 2019.C. To show that Chinese people spend too much time on livestreaming apps.D. To prove that livestreaming are becoming increasingly popular in China.9. What does Wang Hao think of commenting on livestreaming?A. It is boring to make comments.B. It is the only way to share viewers’ lives.C. It makes people feel involved in the stream.D. It helps livestreamers improve themselves.10. What do paragraphs 5&6 mainly talk about?A. Livestreaming replaced physical stores in many areas.B. Many businesses turned to livestreaming platform for marketing.C. Livestreaming platforms faced challenges during the pandemic.D. Livestreaming platforms made changes to their services.11. How does the author feel about thefuture of livestreaming？A. Positive.B. Uncertain.C. Disappointed.D. Confused.DIn a world simultaneously on fire and underwater thanks to climate change, scientists have announced some good news: Several important tuna (金枪鱼) species have stepped back from the edge of extinction.The unexpectedly fast recovery speaks to the success of efforts over the past decade to end overfishing. But tuna are not the only species scientists are discussing at the 2021 World Conservation Congress in Marseille, France, which is organized by the International Union for Conservation of Nature (IUCN). Researchers caution that many other marine species remainimperiled. For instance, more than a third of the world's sharks remain threatened with extinction due to overfishing, habitat loss, and climate change.“I think the good news is that sustainable fisheries are possible,” says Beth Polidoro, a marine biologist at Arizona State University. “We can eat fish in a proper way and without driving the population to the point where itis on the road to collapse or extinction."At the same time, she warned that the changes in status should not be an reason to catch as many fish as we want.The IUCN, which ranks the world's most endangered species on its Red List of Threatened Species and is backed by 16,000 experts across the globe, also announced at the meeting that some animals are moving in the other direction, onto the Red List. One notable example is the Komodo dragon, an island-living lizard at particular risk from climate change.For the better part of two decades, Polidoro has been part of a specialist group tasked with assessing the statuses of more than 60 species of tuna and billfishes for the IUCN.Her team announced its first comprehensive findings in 2011, mentioning that a number of commercially fished tuna species were dangerously close to disappearing.According to the new data, the Atlantic bluefin tuna (Thunnus thynnus), once listed as endangered, now qualifies for a status of least concern. As does the yellowfin tuna (Thunnus albacares) and albacore tuna (Thunnus alalunga), which were both considered near-threatened the last time they were assessed.12. What does the underlined word “imperiled” in paragraph 2 mean?A. EndangeredB. ConservedC. ExtinctD. Safe13. What can we infer from Polidoro's words?A. Too many fish are being eaten by human beings.B. Eating fish does not necessarily lead to its extinction.C. Fish species are on the edge of dying out if no action is taken.D. The situation of underwater species are changing for the better.14. Which of following statement is true according to the passage?A. Some Tuna species are wiped out by overfishing.B. Tuna are ranked as the world's most endangered species.C. Climate change poses a threat to most species in water and on land.D. Three tuna species have been saved from extinction according to the data.15. What's the main idea of the passage?A. Some tuna species are reported endangered recently.B. IUCN has helped saved a great many marine species.C. Improvement has been made in saving marine species.D. Great efforts should be made to conserve species underwater.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届上海市外国语大学附属大境中学高三英语期中试卷及参考答案

2020届上海市外国语大学附属大境中学高三英语期中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AGetting your kid to bed at night is seriously one of the most challenging things you'll ever have to do. Most kids are just so full of energy that they'll tire you out before they're halfway through their store of energy. An easy thing to calm down your child to get into bed is giving in and allowing some iPad screen time. However, it's really not a great idea, just like you thought.Researchers at theArizonaStateUniversityconducted a study with 547 kids between the ages of 7 to 9. Their parents tracked how much screen time the kids were allowed along with their sleep patterns. The study found that kids who did not engage in screen time before bed slept for 23 more minutes every week and also went to sleep about 34 minutes earlier than those playing with iPad. Although that might not seem like so much more time, quality of sleep is vastly important in Children's development.The CDC's (美国疾病控制中心)2018 National Youth Risk Survey outlines that good quality sleep can impact a child's life in many ways, including affecting grades and also weight gain. Students with an "A" average slept for 30 or more minutes per night than those with a "D" or"F" average.A 2018PennsylvaniaStateUniversitystudy showed that children with irregular bedtimes had a higher risk of having increased body weight. Those with consistent and age-appropriate bedtimes when they were 9 years old had a healthier BMI (体质指数)at age 15 than those with irregular bedtimes.Hard as it is, it's really important not to give in and hand over an iPad to your child who is about to go to bed. Just like it's important for adults to go to sleep without any distractions, it's even more important for kids.1. What do the findings of the researchers at theArizonaStateUniversitysuggest?A. More sleep is necessary for children's development.B. Enough sleep helps improve academic performances.C. Screen time before bed leads to later and less sleep.D. Children sleeping irregularly are easy to gain weight.2. What is the text mainly about?A. How is screen time affecting teenagers?B. What are negative effects of irregular bedtimes?C. When should you get your kid to bed at night?D. Why is screen time before bed a bad idea for kids?3. Who is the text intended for?A. Parents.B. Children.C. Teachers.D. Researchers.BWho is a genius? This question has greatly interested humankind for centuries.Let's state clearly: Einstein was a genius. His face is almost the international symbol for genius. But we want to go beyond one man and explore the nature of genius itself. Why is it that some people are so much more intelligent or creative than the rest of us? And who are they?In the sciences and arts, those praised as geniuses were most often white men, of European origin. Perhaps this is not a surprise. It's said that history is written by the victors, and those victors set the standards for admission to the genius club. When contributions were made by geniuses outside the club—women, or people of a different color1 or belief—they were unacknowledged and rejected by others.A study recently published bySciencefound that as young as age six, girls are less likely than boys to say that members of their gender(性别)are “really, really smart.” Even worse, the study found thatgirls act on that belief: Around age six they start to avoid activities said to be for children who are “really, really smart.” Can our planet afford to have any great thinkers become discouraged and give up? It doesn't take a genius to know the answer: ly not.Here's the good news. In a wired world with constant global communication, we're all positioned to see flashes of genius wherever they appear. And the more we look, the more we will see that social factors(因素)like gender, race, and class do not determine the appearance of genius. As a writer says, future geniuses come from those with “intelligence, creativity, perseverance(毅力), and simple good fortune, who are able to change the world.”4. What does the author think of victors' standards for joining the genius club?A. They're unfair.B. They're conservative.C. They're objective.D. They're strict.5. What can we infer about girls from the study inScience?A. They think themselves smart.B. They look up to great thinkers.C. They see gender differences earlier than boys.D. They are likely to be influenced by social beliefs6. Why are more geniuses known to the public?A. Improved global communication.B. Less discrimination against women.C. Acceptance of victors' concepts.D. Changes in people's social positions.7. What is the best title for the text?A. Geniuses Think AlikeB. Genius Takes Many FormsC. Genius and IntelligenceD. Genius and LuckCDid you know that the average child has heard the word "no" over 20,000 times before they turn the age of three? Ironically, it is also around this time that children begin to develop enough personal character to refuse to obey. The "terrible twos" are categorized by a lack of understanding. Somewhere between three and four, children begin to acquire the skills to reason. It is during this time they watch how other children and adults reason. If we're not careful, the children will watch us model a world of "NOs".By the time a person turns eighteen, how many times have they been told no? I haven't found any studies that even attempted to track this statistic, but I'm sure if the number is 20,000 by three, then at eighteen that number has multiplied. You can do the math.Anyway, I think I know why we say no. We say no to protect. We say no to direct. We say no to stop potential confusion. However, do we sometimes say no just for the sake of saying no? Do we say no because we have internalized(内在化)all of the "NOs" we've heard over the years and we feel it is finally our time to say no to someone else?The internalized no can damage the growth process of dreams in infancy as quickly as it can weaken a three-year-old. And we wonder why we run intopeople with big, un-accomplished dreams who have a bit of a chip on their shoulder. They have to take on the 20,000 NOs. However, the thing that keeps them going is the possibility of the power of ONE YES! Just as it only takes one book to make a writer a Pulitzer Prize Winner, it only takes one word to change the course of your day. That word is YES!8. What do we know about two- year- olds?A. They understand well.B. They often say no to others.C. They think logically.D. They don't do all they're told.9. What effect does saying no have on children?A. They lose all their dreams.B. They aren't easy to succeed.C. They don't make mistakes.D. They never say yes to others.10. Which word best describes the author's attitude to a world of "NOs"?A. Tolerant.B. Disapproving.C. Favorable.D. Carefree.11. What is the text?A. A how-to guide.B. A survey report.C. An opinion essay.D. A short story.DThe term "bird brain" is frequently used to describe a person's lack of intelligence and good decision-making ability. However, some scientists believe it should be considered a praise, given that many birds can perform human tasks like producing and using tools, solving problems, and planning for future needs. Now,Griffin, an African Grey parrot, has proved that birds may even possess better visual memories than human adults and children.The study, led by Hrag Pailian, a researcher at Harvard University, had the parrot compete in the game against twenty-one undergraduate students and twenty-one 6 to 8-year-old children. The popular challenge involves hiding a small object under one of three or more upside-down cups, which are moved around. Participants are required to accurately identify the cup under which the object lies. To make the task more challenging, the researchers required participants to track two, three, and four objects at the same time.An analysis of the results showed thatGriffinoutperformed the 6 to 8-year-olds across all levels on average. Even more impressive, the "bird brain" performed as well as, or slightly better than, the 21 Harvard students on 12 of the 14 trials! It was only in the final two tests, which had the most objects and most movement, that the parrot fell behind the adults. However,Griffin's performance was never below that of the children.Griffinwas the candidate of choice because the scientists needed an animal that had a brain functionality similar to that of humans. "The fact that the smart parrot loves to show off his brain power in exchange for a few cashews (腰果) did not hurt either", said Irene Pepperberg, a Harvard lecturer, who has trained Griffin and several other African Grey parrots, has been studying the species for over four decades and is considered a pioneer in the study of bird intelligence.12. Whatwere the participants required to do in the study?A. Identify different kinds of objects.B. Tell where the hidden object lies.C. Track other participants' performance.D. Move around upside-down cups.13. What did the results of the study indicate?A. 6 to 8-year-olds did better thanGriffin.B. Parrots have a better memory than other birds.C. Harvard students have a better visual memory.D.Griffinoutsmarted Harvard students in some trials.14. Why wasGriffinchosen for the experiment?A. It was good at making decisions.B. It was specially trained for experiments.C. It had similar brain functions to human beings.D. It loved to show off his language power for some treats.15. What is the best title for the text?A. "Bird brain" becomes a term for a stupid person.B. Harvard lecturer pioneers in bird intelligence study.C. Parrot outsmarted Harvard students in visual memory test.D. Researchers made new discoveries about human intelligence.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届上海市外国语大学附属大境中学高三英语上学期期中考试试卷及答案解析

2020届上海市外国语大学附属大境中学高三英语上学期期中考试试卷及答案解析第一部分阅读（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ACitisport inNewportWe at Citisport aim to improve sports training and facilities inNewport, giving you more opportunities to try both new and traditional sports.GolfWe are pleased to be able to offer lessons at Kingsway Golf Centre just outsideNewport. These are run by experienced golf professionals, and are held on an all-weather practice area. The adult lessons are open to anyone aged 13 and over, and are suitable for all levels from beginners upwards. These take place on Wednesdays from 3:00 to 4:00 pm over a period of six weeks. Children’s lessons for 7-12 year old are held from 2:00 to 3:00 pm on Saturdays during term time.TennisThe Citisport tennis courses provide an opportunity for local people to develop their skills on the brand-new indoor tennis court at Newport Leisure Centre. All equipment can be provided, but please feel free to use your own racket (球拍) if you prefer. Our Starter course is held on Mondays from 7:00 to 8:00 pm, and is for beginners of 12 years and over. Our Improver course, which takes place on Tuesdays from 8:00 to 9:00 pm, is for players with some experience.Football for girlsBy popular request, Citisport is holding another one-day girls-only football course. This aims to give local girls the chance to learn essential skills and develop more advanced ones. The course will take place on Saturday, 9th November from 9:00 am to 5:00 pm, and is open to all girls aged 10-14 years living in theNewportarea.GymnasticsThis course is for beginners aged 8-14 and will provide an introduction to basic skills. There is a maximum of six pupils per coach in each class. At the end of the course there is a demonstration for friends and family of all the skills learnt there. The course will take place on Thursdays from 6:00 to 7:00 pm.1. What can we know about the Citisport golf lessons?A. You can take lessons at Kingsway Golf Centre insideNewport.B. The golf lessons can take place only in good weather.C. Teenagers can attend golf lessons on Wednesday afternoons.D. Children’s lessons usually last 2 or 3 hours on Saturday afternoons.2. Which of the following statements is true about the Citisport tennis courses?A. You can get the skills in an open-air court.B. You must take your own racket during the course.C. You can take the Monday course if you are a green hand.D. You can become an experienced player after the courses.3. Which course lasts only one day according to the text?A. Golf.B. Tennis.C. Football for girls.D. Gymnastics.BThe race skywards began inAmerica. In the late1800s, industrialization had driven urban populations and land prices up, making tall buildings increasingly cost-effective, according to Carol Willis, director of theSkyscraperMuseuminNew York, “The very first tall buildings were office buildings that concentrated a work force, piled one on top of the other in order to make business very efficient, ”she says.Like all major changes in architecture, the trend wasunderpinnedby engineering. The development of steel framework, which could be used instead of load-bearing stones, made it easier and cheaper to build tall. The coming of the elevator, meanwhile, made living on higher floors far more convenient.Though similar in shape, today's skyscrapers (摩天大楼) look little like those built in the first half of the 20thcentury. This is mostly thanks to architecture's next major technological shift：the curtain wall.Postwar developments in manufacturing meant that huge panes of glass could be produced quickly and uniformly, and glass windows soon became the front of choice for high-rises. As well as allowing for greater floor space and more natural light, glass exteriors (外部) help. buildings resist greater windloads.There are now 191 completed skyscrapers that are at least 300 meters tall. But that doesn't mean our cities will grow taller indefinitely. While each additional story adds sellable floor space, construction costs also rise. All buildings reach a point where adding an extra floor will cost more money than it brings.“Every city wants to have this landmark that gives that sense of distinct culture, ”but it also needs places for people to live and work in urban settings“without the city sprawling (无序扩张), ”explains Hong Kong architect Simon Chan.The next big challenge facing architects goes beyond height：At a time when buildings and their construction account for more than a third of the world's energy consumption and contribute about 40% of greenhouse gas emissions(排放), there are new costs to consider.Whether it's employing more energy-efficient materials, encouraging natural air or using buildings themselves to generate solar or wind energy, reducing carbon emissions is the new frontier for many skyscraper architects.4. What does the underlined word“underpinned” in paragraph 2 probably mean?A. Created.B. Prepared.C. Suggested.D. Supported.5. What made living on higher floors much more convenient?A. The development of steel framework.B. Load-bearing stones.C. The use of the elevator.D. The curtain wall.6. What can we know from paragraph 5?A. Our cities will grow taller definitely.B. All skyscrapers are at least 300 meters tall.C. Construction cost rises as the stories increase.D. The profit for builders will be greater as the building becomes higher.7. What's the next big challenge facing architects?A. How to build the greenest building.B. How to build the strongest building.C. How to build the tallest building in the world.D. How to build the most comfortable building.CElizabeth Bishop is considered one of the best American poets of the 20th century. She was born in Worcester, Massachusetts in 1911. Her dad died when she was just a baby and her mom never recovered from the loss. She went to live with her grandparents in Nova Scotia, Canada when she was five. Eventually Bishop attended Vassar College, where she began to write poetry.At Vassar she discovered Marianne Moore's poetry and met Ms Moore and began their life-long friendship. She later met poet Robert Lowell. She wrote tons and tons of letters to both of them, which is good for us because we would otherwise know very little of her personal life.Bishop published her first book of poetry in 1946 and wrote until her death in 1979. She would spend years working on a single poem. Her poems are not the result of hasty scribbling (匆忙乱写) on paper while eating breakfast. She would look through drafts of poems again and again and improve them until they were as close to perfect as she could get them.Reading Elizabeth Bishop is like being transported to the very place, the very moment she's writing about. She leads us to a microscope so we can see every smallest part of the scene. It seems that she's always asking us to notice more, and more until the poem is so clear in our minds that it's almost painful—like a light that's too bright.8. What do we know about Bishop's early life?A. She was mainly brought up by her grandparents.B. She spent her childhood mainly in Worcester.C. She was always encouraged by her parents.D. She started to write poems at five.9. Why are Bishop's letters to Moore and Lowell important?A. They have a deep influence on other poets.B. They offer much information about her life.C. They help us study Moore and Lowell's poetry.D. They prove she had friendships with famous poets.10. What can we say about Bishop's poetic creation?A. She liked to write in the morning.B. She could write poems at high speed.C. She tried her best to achieve perfection.D. She published hundreds of books of poetry.11. Which word can be used to best describe the style of Bishop’s poems?A. Enthusiastic.B. Romantic.C. Humorous.D. Exact.DWhen an animal species is considered endangered, it means that the International Union for Conservation of Nature (IUCN) has evaluatedit as nearly extinct, which means that a majority of its population has already died off and the rate of birth is lower than the species’death rate. Today, more and more animal and plant species are on the way to extinction because of a variety of major factors that cause a species to become endangered, and as you might expect, humans play a role in quite a few of them — in fact, the biggest threat to endangered animals is human encroachment (侵入) on their habitats.Every species needs a habitat, where an animal finds food, raises its young. Unfortunately, humans destroy animal habitats in a number of different ways: building houses, clearing forests to getlumberand to plant crops,draining rivers to bring water to those crops, and making streets and parking lots.In addition, human development pollutes the environment with all kinds of chemicals, which destroys food sources and shelters for the creatures and plants of that area. As a result, some species die out while others are pushed into areas where they can’t find food and shelters — to make matters worse, when one animal population suffers, it affects many other species in its food web, so more than one species’population is likely to decrease.Habitat destruction is the number one reason for animal endangerment, which is why conservation groups work hard to repair the effects of human developments — many non-profit groups like the Nature Conservancy are taking measures to clean up coastlines and establish nature preserves to prevent further harm to native environments and species around the world.12. A species is considered endangered________.A. when the IUCN has noticed its population changeB. when most of its population has died offC. when the species’ birth rate is close to its death rateD. when the species is losing its habitat13. What does the underlined word “lumber” probably mean?A. Gas.B. Food.C. Chemicals.D. Wood.14. What is being done to protect the endangered species?A. Calling for human development.B. Raising money.C. Establishing nature preserves.D. Educating people.15. What is the main idea of the passage?A. Habitat destruction causes animal endangerment.B. Animals die out due to environment pollution.C. Measures need to be taken to increase species.D. Non-profit groups are making great contributions.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年上海市外国语大学附属大境中学高三英语上学期期中试卷及答案

2020年上海市外国语大学附属大境中学高三英语上学期期中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ALOI English—English Conversation ClassesTake English conversation classes with native English -speaking teachers from theUnited States,IrelandandAustralia, live, 1 - on - 1.This is by far the best way to improve your real spoken English and listening abilities and get to a level where you can use it in real - life situations. Our teachers mainly carry on conversations about work in different fields, such as business, finance, politics and travel. However, if you like, you can have normal day - to - day conversations about events, weather, etc. If you would like to learn some grammar during conversation, we can do that too!Our English Conversation classes：• Your conversations will always be with a native English speaker.• You can choose the time, day and teacher for each class.• The classes are made for each student individually. They will be at your level, studying what you need and what interests you.Packages10 Classes Package $ 229.90Interested in taking 10, 55 - minute conversation English classes?Schedule a first free class with LOI English and talk to the teacher about it. After that, you can arrange to take our 10 - class conversation English course.20 Classes Package $ 439,80Interested in taking 20, 55 - minute conversation English classes?Schedule a first free class with LOI English and talk to the teacher about it. After that, you can arrange to take our 20 - class conversation English course.1. What do the classes mainly focus on?A. Daily conversations.B. Work - related topics.C. Grammar rules.D. Area - based accents.2. Which is NOT offered to the students?A. Native English - speaking teachers.B. Personalized courses.C. Choice of class time and teacher.D. Offline learning materials.3. What should a student do first if he decides on either of the packages?A. Arrange a free class with LOI English.B. Bargain with LOI English for lower fees.C. Choose an experienced LOI English teacher.D. Make a promise to sit through each class.BEarthquakes are a natural disaster—except when they're man-made. The oil and gas industry has forcefully used the technique known as hydraulic fracturing (水力压裂法) to destroy sub-surface rock and liberate the oil and gas hiding there. But the process results in large amounts of chemical-filled waste water. Horizontal drilling (水平钻孔) for oil can also produce large amount of natural, unwanted salt water. The industry deals with this waste water by pumping it into deep wells.On Monday, the US Geological Survey published for the first time an earthquake disaster map covering both natural and “induced” quakes. The map and a report show that parts of the central United States now face a ground-shaking disaster equal to the famously unstable terrain (不稳定地形) of California.Some 7 million people live in places easily attacked by these man-made quakes, the USGS said The list of places at highest risk of man-made earthquakes includes Oklahoma, Kansas, Texas, Arkansas, Colorado, New Mexico, Ohio and Alabama. Most of these earthquakes are ly small, in the range of magnitude (震级) 3, but some have been more powerful, including a magnitude 5.6 earthquake in 2011 in Oklahoma that was connected to waste water filling.Scientists said they do not know ifthere is an upper limit on the magnitude of man-made earthquakes; this is an area of active research Oklahoma has had prehistoric earthquakes as powerful as magnitude 7.It's not immediately clear whether this new research will change industry practices, or even whether it will surprise anyone in the areas of newly supposed danger. In Oklahoma, for example, the natural rate of earthquakes is only one or two a year, but there have been hundreds since hydraulic fracturing and horizontal drilling, with the waste water filling, became common in the last ten years.4. What kind of human activities can cause earthquakes?A. The man-made produced waste water in the factories.B. The process of digging deep wells in those poor areas.C. The advanced techniques used to deal with waste water.D. The oil or gas industry's work connected with the earth.5. What does the underlined word “induced” in paragraph 2 mean?A. Man-made.B. Reduced.C. Newly-built.D. Controlled.6. How much magnitude can man-made earthquakes reach?A. It's been said as small as magnitude 3.B. It has been said as high as magnitude 7.C. It's being studied without a final conclusion.D. It has risen by an average of magnitude 5. 6.7. What is the best title for the text?A. Natural Earthquakes in America Are Disappearing NowB. 7 Million Americans at Risk of Man-Made EarthquakesC. Time for Oil and Gas Industry Change Their Working PracticeD. More Often Earthquakes as Powerful as Magnitude 7 in AmericaCTechnology is supposed to make our lives easier, allowing us todo things more quickly and efficiently. But too often it seems to make things harder. This increase in complexity, often called "feature creep," costs consumers time, but it also costs business money. Product returns in the U.S. cost a hundred billion dollars a year, and a recent study by Elke den Ouden, of Philips Electronics, found that at least half of returned products have nothing wrong with them. Consumers just couldn't figure out how to use them. Companies now know a great deal about problems of usability and consumer behavior, so why is it that feature creep proves unstoppable?In part, fieature creep is the product of the so-called internal-audience problem: the people who design and sell product are not the ones who buy and use them, and what engineers and marketers think is important is not necessarily what's best for consumers. The engineers tend not to notice when more options make a product less usable. And marketing and sales departments see each additional feature as a new selling point, and anew way to attract customers.You might think, then, that companies could avoid fieature creep by just paying attention to what customers really want. But that's where the trouble begins, because although consumers find overloaded gadgets（配件）unmanageable,they also find them attractive. It turns out that when we look at a new product in a store we tend to think that the more features there are, the better. It is only once we get the product home and try to use it that we realize the virtues of simplicity.It seems strange that we don't expect feature tiredness and thus avoid it. But, as numerous studies have shown, people are not, in general, good at predicting what will make them happy in the future. As a result, we will pay more for more features because we systematically overestimate how often we'll use them. We also overestimate our ability to figure out how a complicated product works.The fact that buyers want bells and whistles but users want something clear and simple creates an unusual problem for companies. A product that doesn't have enough features may fail to catch our eye in the store. But a product with too many features is likely to annoy consumers.8. What does the first paragraph mainly discuss?A. The benefits brought by the advanced technology.B. The recent study conducted by Elke den Ouden.C. The loss caused by the feature creep of technology.D. Many problems of usability known by the consumers.9. Which of the following is true according to the second paragraph?A. It is the audience problem that leads to feature creep.B. What matters to designers and marketers is not good for consumers.C. Feature creep brings blessings to the people in marketing and sales.D. The engineers will not pay attention to the quality of the product10. What do we know about the buyers in paragraph 4?A. They are deeply convinced that all the products work in simple way.B. They are fed up with the more and more features of the products.C. They are too confident of their ability to use the complicated products.D. They are quite clear about the products which will make them happy.11. What can be a suitable title for the text?A. Saying No to Feature Creep is No Easy ThingB. Feature-heavy Products in DemandC. The More Features, the BetterD. Simplicity Outweighs ComplexityDWe asked four people who watched an online talk on technology and communication by Sherry Turkle for their opinions.Fred:The talk certainly gave me plenty of food for thought about how technology is changing our behaviour. People are constantly multitasking, whether it be emailing during meetings or texting in the checkout queue. It’s as if we can’t bear to miss out on what our online friends are up to, so we juggle the real and online world. My greatest concern is that we don’t give our brains a chance to switch off. It’sthese precious momentswhen we actually process information that helps us make important decisions.Jeremy:It was a fascinating talk and the speaker really hit the nail on the head with a couple of things. Take parental influence, for instance. How can we expect teenagers not to text while doing their homework when they witness their parents posting on social media while cooking the evening meal or waiting at a red light?Kath:So much of what the speaker said rang true. I honestly believe there’s a danger that the more connected we are, the more isolated we feel. I don’t think this is such an issue for my generation who’ve lived without technology for so long. We know how to be alone. But the under 20s are another kettle of fish. They’re so busy communicating that they never experience the feeling of solitude and run the risk of not learning how to enjoy their own company.Carl:I’m not sure to what extent I agree that people are more alone, but the way we communicate has certainly evolved. The speaker makes a good point about how we’re getting used to talking with machines like Siri or robots, which are totally lack of experience of human life. But despite such limitations, we seem to be expecting more from technology and less from each other.12. What does the underlined phrase “these precious moments” in paragraph 2 refer to?A. When our brains are free.B. When we emailing during meeting.C. When we texting in the checkout queue.D. When we juggle the real and online world.13. What suggestion may Jeremy give to the parents?A. Accompany their children when they are doing homework.B. Prevent their children using phone while doing homework.C. Set a good example for their children on using phone properly.D. Stop posting on social media in face of their children.14. What does Kath worry about the under 20s generation?A. They communicate more with others.B. They use more technology.C. It’s difficult for them to find companies.D. They don’t know how to be alone.15. What is Carl’s attitude towards the use of technology in communication?A. Favorable.B. Intolerant.C. Doubtful.D. Indifferent.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年上海市外国语大学附属大境中学高三生物下学期期中考试试题及答案解析

2020年上海市外国语大学附属大境中学高三生物下学期期中考试试题及答案解析一、选择题：本题共15小题，每小题2分，共30分。

每小题只有一个选项符合题目要求。

1. “黄金搭档”中含Ca、Fe、Zn、Se等元素，其中属于组成生物体的大量元素的是()A.CaB.FeC.ZnD.Se2. 生长抑素（SS）是一种含14个氨基酸环状多肽，由下丘脑合成释放，构成SS的基本单位的平均相对分子质量为m。

下列说法错误的是（）A.1分子SS的相对分子质量可以表示为14m－252B. 在核糖体上合成1分子SS可产生13分子H2OC.SS中有可能不含有游离的氨基D.SS可与双缩脲试剂发生紫色反应3. 以下关于甲状腺激素作用特点的叙述，错误的是（）A.需借助体液运输B.发挥作用后立即失活C.在代谢时发挥催化作用D.作用于特定的细胞、器官4. 向鱼镖内注入适量质量浓度为0．3g/mL的蔗糖溶液，扎紧口并称重，然后将其浸入质量浓度为0．05g/mL 的蔗糖溶液中，每隔10分钟称重一次，鱼瞟重量逐渐增加，1小时后，鱼瞟重量不再增加。

下列说法错误的是（）A.鱼鳔重量增加是因为外界水分子的进入B.鱼鳔重量不再增加时，外界的水分子不再进入鱼鳔C.鱼鳔重量不再增加时，鱼鳔内外蔗糖溶液的浓度可能相等D.若实验开始时，在鱼鳔外的蔗糖溶液中加入蔗糖酶，鱼鳔重量增加的速率减慢5. 某同学在学习真核细胞的物质基础和结构与功能后，绘制了如下概念图。

下列叙述错误的是（）A.若X代表核苷酸的化学组成，则①~①可表示磷酸、五碳糖、碱基B.若X代表细胞中的多糖，则①~①可表示淀粉、纤维素和糖原C.若X代表含有核酸的细胞器，则①~①可表示核糖体、线粒体和叶绿体D.若X代表细胞的双层膜结构，则①~①可表示细胞膜、线粒体膜和核膜6. 用15N标记下列三种物质(数字所在的部位)，能标记的一组是（）A.①①①B.①①①C.①①①D.①①①7. 大麦种子萌发过程中需要α-淀粉酶水解淀粉供胚生长需要。

2020年上海市外国语大学附属大境中学高三英语上学期期中试题及参考答案

2020年上海市外国语大学附属大境中学高三英语上学期期中试题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ASwimming Holes in AmericaIn America, these secret swimming holes are hidden and hard to reach but well worth the adventure.Cummins FallsLooking for the best place to escape the summer heat in the heartland of America? For more than 100 years, Cummins Falls, a scenic,75-foot waterfall located in Jackson County, TN, has been a treasure for Tennessee natives. But now, the secret is out! Although it’s a bit tough to get to, once in the park, the mountains and river provide unmatched beauty on your way to taking a swim in Tennessee's eighth-largest waterfall.Sliding RockA popular place to cool off during those hot North Carolina summers, Sliding Rock waterfall is located in the Pisgah National Forest in Transylvania County. A flattened rock about 60 feet lies in a nearly 7-foot-deep pool at the bottom, making this natural waterslide a great place to visit with people of all ages.Mooney FallsIt is the tallest water feature in the Grand Canyon, rising 190 feet above the surface. Named after an explorer in the 1800s, Mooney Falls is accessible only by crawling（爬）through 2 underground passages and then climbing down a sheer cliff（峭壁）face with just a couple of chains to hold on to. Although it is tough to get to, the view and the cool alone make it worth the trip.Lihue EstateA private swimming hole at the old Lihue Sugar Farm on Kauai, HI, was changed into an inner-tube water ride by Kauai Backcountry Adventures in 2003 and opened to adults. The waters for this 2.5-mile journey, which come from near the top of Mount Waialeale—one of the wettest spots in the world—are channeled through ditches（沟渠）that were hand-dug by farm workers over a century ago.1. Which hole may be the favourable destination for families?A. Lihue Estate.B. Sliding Rock.C. Mooney Falls.D. Cummins Falls.2. What can we learn about Mooney Falls from the text?A. It wasfound by an explorer.B. It was hand-dug in the 1800s.C. It is dangerous to arrive there.D. It is the tallest fall in the world.3. What is special about Lihue Estate?A. It is man-made.B. It is a private area.C. Its water is from underground.D. It lies on the top of Mount WaialealeBTo hear people talk about Internet friendships, you would think it was one giant web of cat-fishing and e-crime. While we all undoubtedly have to take measures to remain safe online, assuming every friendship or connection made on Instagram, Twitter or Facebook is cheating or insincere would be a mistake.As a woman who works in the creative industry, I have found real joy in seeking out a community I couldn’t find elsewhere, and making some great friends along the way. My first online friendship was on Twitter with my(now) best friend, during the university exam period. We exchanged study notes in dozens of direct messages, set a study date, and haven’t looked back since.Drawn to each other by similar circumstances, friendships online are similar to offline in that they tend to begin because of shared interest or common ground-maybe they’ve read the post on Instagram. Maybe they have the same taste in food or politics. Or maybe they just love memes too. If online friendships start similar to friendships offline, they grow in the same way, too. Often through mutual support: apart from calling a friend to congratulate him on that new job, you also re-tweet his jokes and praise his Instagram story.Despite my positive experiences when I tell people, most are still suspicious. Eyebrows are raised higher when I explain not only have I found a community online but have made friendships with people I meet face-to-face too. Actually, these are just as valid as other friendships, according to behavioural psychologist Jo Hemmings, who says online friendships can be real.So how do you know if people are there for the real you or just because you’re popular on Instagram? Hemmings has simple rules. She tells me “You have to equally feel comfortable that you’re getting something of each other instead of being used to enable something that isn’t friendship.”Therefore, if all a “friend” online is asking you to do is to promote their work or personal brand and rarely takes an interest in you, then there may be room to question the basis of the friendship. On that note it is worth remembering that just because someone has a lot of followers, it doesn’t necessarily mean they have lots of friends.4. What is most people’s attitude towards online friendship?A. Negative.B. Positive.C. Objective.D. Neutral.5. Why does the writer share her own experience in paragraph 2?A. To introduce the background information of the text.B. To convey the writer’s attitude and give the related example.C. To prove the likely risk for people to develop friendship online.D. To remind people of the various benefits of making friends online.6. How can online and offline friendships be deepened?A. They should be based on shared interest.B. They need to have common ground.C. They require support from each other.D. They can’t live without social media.7. According to the author, what’s the golden rule to make friends online?A. A friend to all is a friend to none.B. Without confidence there is no friendship.C. A friend without faults will never be found.D. Friendship cannot stand always on one side.CThe grocerystore might not be your favorite place to visit when you're at home, but is it ever fun when you're in another country? Honestly speaking, they're one of those strange little destinations that I like to sniff out everywhere I go, much as other travelers head toward clothing stores, libraries, coffee shops or galleries.The greatest beauty of the grocery store –– whether it's a supermarket or a tiny shop –– is that it gives you a glimpse into what local people buy to cook their own meals. This offers clues into their lifestyles and preferences, and into the agricultural and cooking practices of the country. I stare at the strange fruits and vegetables, the seafood, the cheese, the spices, the bread, and oh, the chocolate...always the chocolate!Being the environmental nerd（呆子）I am, I like paying attention to packaging, which can reflect people's attitudes towards environmental protection. Italy, for example, has a habit of requiring customers to bag their fruits and vegetables in plastic for weighing, while Sri Lanka leaveseverything loose in bins. In Brazil, everything isprepackaged in a layer of plastic.People in grocery stores tend to be friendlier. They smile, say hello, and sometimes ask questions, which can lead to great conversations. I had a further discussion with a teenaged cashier in Sri Lanka, over which bag of crunchy（松脆的）mix to buy. He insisted that the one labeled “spicy” would be too hot for me, but I told him I was willing to risk it. He laughed and we ended up talking about my favorite Sri Lankan foods for ten minutes.It's interesting then to come home and look at one's own local grocery store through new eyes. What would a visitor think? What stands out, and what do the food displays say about us as a culture? You might be surprised by what you realize.8. According to the author, what is the key benefit of visiting foreign grocery stores?A. Learning to cook foreign dishes.B. Making friends with local people.C. Buying cheaper food and souvenirs.D. Knowing local people and the country.9. What does the author show by mentioning some countries in paragraph 3?A. People's special lifestyles.B. People's shopping habits.C. People's environmental awareness.D. People's packaging methods.10. What can we infer from paragraph 4?A. Sri Lankans know a lot about food.B. Grocery stores are good social places.C. Grocery stores vary in different countries.D. Sri Lankans like to give strangers suggestions.11. Which of the following shows the structure of text? (P: paragraph)A. B.C. D.DCanadaIs Our NeighbourCanada and the United States are neighbours.They are on the same land.They share the same long boundary(国界).These two nations are similar in many ways.Canada buys many goods from the United States.Cars and clothes are two examples.The United States also buys goods from Canada.Much of the paper used in the United States comes from Canada.Some of the oilweuse comes from Canada,too.Americans travel toCanadaon holiday.And Canadians often visit the United States.It is easy for the people of one country to go to the other country.Canadians read about the United States in newspapers and magazines.Many Americans watch Canadian baseball and hockey (曲棍球)matches on Sundays.However,there are important differences between theUnited Statesand Canada.The United States has more people.Because the population is smaller,there are more open places in Canada.There is much unused land.This is another important difference.12.Canadabuys from theUnited States.A.oil and paperB.nothingC.many thingsD.everything13.In the first paragraph “we” means ________.A.CanadiansB.AmericansC.ChineseD.students14.The people in theUnited Stateslike Canadian ________.A.baseballB.basketballC.newspapersD.oil15.Which of the following statements is WRONG?A.Canada has less people than theUSA.B.Canada has not used all the land.C.Canada is connected withAmerica.D.Canadians don’t like hockey.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届上海市外国语大学附属大境中学高三生物下学期期中试题及答案

2020届上海市外国语大学附属大境中学高三生物下学期期中试题及答案一、选择题：本题共15小题，每小题2分，共30分。

每小题只有一个选项符合题目要求。

1.下列有关生物变异的叙述，错误的是（）A. 动物细胞在有丝分裂和减数分裂过程中均可发生染色体变异B. 某性染色体为XXY的患者，其一条性染色体有可能来自于祖母C. 倒位后染色体和DNA长度不变，不会引起生物性状的改变D. 细胞代谢产生的自由基和环境中的亚硝胺均可能引起基因突变2.在人和动物皮下含量丰富的储能物质是（）A.糖原B.淀粉C.脂肪D.蛋白质3.目前，我国已进入新冠肺炎常态化疫情防控阶段，引起新冠肺炎的病原体是一种新冠病毒。

下列相关叙述正确的是（）A.所有的新冠病毒构成一个种群B.新冠病毒具有唯一的细胞器是核糖体C.新冠病毒所含元素在宿主细胞中都能找到D.新冠病毒能在餐具上繁殖，消毒液可抑制繁殖4.细胞受到冰冻时，蛋白质分子相互靠近，当接近到一定程度时，蛋白质分子中相邻近的巯基（-SH）氧化形成二硫键（一S—S—）。

解冻时，蛋白质氢键断裂，二硫键仍保留（如下图所示）下列说法不正确的是（）A. 结冰和解冻过程涉及到肽键的变化B. 解冻后蛋白质功能可能异常C. 巯基位于氨基酸的R基上D. 抗冻植物有较强的抗巯基氧化能力5.下列有关“DNA的粗提取和鉴定”实验原理的叙述，正确的是（）A.DNA在不同浓度NaCl溶液中溶解度不同，但不溶于2mol/L的NaCl溶液B.利用DNA不溶于酒精的性质，可除去细胞中溶于酒精的物质而得到较纯的DNAC.DNA是大分子有机物，不溶于水而溶于有机溶剂D.在沸水中，DNA遇双缩脲试剂会出现紫色反应6.如图关于ATP与ADP相互转化的叙述，正确的是（）A. ①②过程为可逆反应B. ①②过程均需要酶的催化C. 细胞内的吸能反应一般与②过程相联系D. ①过程释放的能量不能用于光合作用7.在自然条件下，植物受到某些因素的影响而发生弯曲生长，某学习小组用燕麦胚芽鞘及幼苗⑦、⑧进行如图所示实验，来研究弯曲现象，一段时间后，会引起弯曲现象的是（）A. ②⑤⑧B. ②④⑤⑧C. ①③④⑥⑦D. ②⑤⑦8.下列关于实验原理或实验材料的说法，错误的是（）A. 蛋白质变性后不能与双缩脲试剂发生颜色反应B. 绿叶中的色素在层析液中溶解度不同可被分离C. 观察黑藻细胞中的叶绿体和细胞质环流需保持细胞活性D. 用于侵染细菌的T2噬菌体只能用大肠杆菌培养9.下列关于人体内胰岛素和胰高血糖素的叙述，错误的是（）A.胰岛素在胰岛B细胞中合成，胰高血糖素在胰岛A细胞中合成B.胰岛素是唯一降低血糖的激素，胰高血糖素不是唯一升高血糖的激素C.胰岛素激活胰岛素受体后，葡萄糖通过胰岛素受体进入细胞内D.胰岛素分泌不足可能导致糖尿病的发生10.下列关于细胞的结构和功能的叙述，正确的是（）A.人胰腺细胞的高尔基体膜与内质网膜直接相连B.黑藻和蓝藻的细胞都不含叶绿体，但都含有能进行光合作用的色素C.叶绿体和线粒体都是双层膜，两者都含有磷脂、DNA和多种酶，叶绿体中还含有色素，是光合作用的场所D.细胞间进行信息交流的方式很多，其中细胞膜上的受体是进行细胞间信息交流必须的结构11.关于下列结构说法，正确的是（）A. 五种结构广泛地存于各种细胞内B. ①②③④⑤都具有生物膜C. 观察活细胞中的④常用健那绿染液染色D. 消化酶的合成和分泌过程经过的结构依次是⑤→③→①12.细胞衰老的原因中，能被大家普遍接受的是（）①生物体生命活动中产生了大量可以攻击破坏细胞内生物分子的自由基造成的②细胞中的营养物质无法正常供应造成的③细胞中产生的代谢废物大量积累所致④染色体上端粒不断被“截短”造成的A. ①③B. ①④C. ②④D. ①③④13.植物利用硝酸盐需要硝酸还原酶，缺Mn2+的植物无法利用硝酸盐。

2020-2021学年上海市外国语大学附属大境中学高三生物期中考试试卷及参考答案

2020-2021学年上海市外国语大学附属大境中学高三生物期中考试试卷及参考答案一、选择题：本题共15小题，每小题2分，共30分。

每小题只有一个选项符合题目要求。

1. 细胞膜在细胞的生命活动中具有重要作用。

下列相关叙述错误的是A.精卵结合过程与细胞膜的功能有关B.胰岛细胞分泌胰岛素与细胞膜的功能有关C.用台盼蓝鉴别细胞生死的“染色排除法”与细胞膜的功能无关D.保障细胞内部环境的相对稳定与细胞膜的功能有关2. 某一DNA分子中，胞嘧啶与鸟嘌呤二者共占碱基总量的46％，其中一条链上腺嘌呤占此链碱基量的28％，则另一条链上腺嘌呤占此链碱基量的百分比为A. 46％B. 26％C. 54％D. 24％3. 某种H﹢-ATPase是一种位于膜上的载体蛋白，具有A TP水解酶活性，能够利用水解ATP释放的能量逆浓度梯度跨膜转运H﹢。

①将某植物气孔的保卫细胞悬浮在一定pH的溶液中（假设细胞内的pH高于细胞外），置于暗中一段时间后，溶液的pH不变。

①再将含有保卫细胞的该溶液分成两组，一组照射蓝光后溶液的pH明显降低；另一组先在溶液中加入H﹢-ATPase的抑制剂（抑制ATP水解），再用蓝光照射，溶液的pH不变。

根据上述实验结果，下列推测不合理的是A.H﹢-ATPase位于保卫细胞质膜上，蓝光能够引起细胞内的H﹢转运到细胞外B.蓝光通过保卫细胞质膜上的H﹢-ATPase发挥作用导致H﹢逆浓度梯度跨膜运输C.H﹢-ATPase逆浓度梯度跨膜转运H﹢所需的能量可由蓝光直接提供D.溶液中的H﹢不能通过自由扩散的方式透过细胞质膜进入保卫细胞4. 动物细胞中，葡萄糖的部分代谢过程如下图。

下列说法正确的是A.乙来源于甲和C6H12O6，丙和丁代表不同化合物B.有氧条件下，过程①、①发生在线位体基质中C.过程①发生在线粒体内膜上，可产生大量能量D.用18O标记C6H12O6，在物质丙中可检侧到18O5. 关于神经系统的组成，下列说法中不正确的是（）A.中枢神经系统包括脑和脊髓B.外周神经系统中的脑神经仅负责管理头面部的感觉和运动C.传入神经又称为感觉神经，将接受到的信息传递到中枢神经系统D.传出神经可以分为支配躯体运动的神经和支配内脏器官的神经6. 科研人员将红色荧光蛋白基因导入烟草细胞培育转基因烟草，如图①①①为两个红色荧光蛋白基因随机整合在染色体上的三种转基因烟草的体细胞示意图。

2019-2020学年上海市外国语大学附属大境中学高三英语期中考试试题及参考答案

2019-2020学年上海市外国语大学附属大境中学高三英语期中考试试题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ARed Tourism Sites inShanghaiThis year marks the 100th anniversary of the founding of the Communist Party of China (CPC). Many Chinese people are planning to visit red tourism attractions in the coming summer vacation. The following are some red tourism sites inShanghai.Former Site of the Editorial Department ofNew YouthRevolutionary magazineNew Youth,which created the New Culture Movement and spread the influence of the May Fourth Movement, was established by Chen Duxiu inShanghaiin 1915. The editorial office moved toBeijingin 1917 when Chen Duxiu was head of liberal arts atPekingUniversitybut moved back toShanghaithree years later.Address: No. 2,100 Nanchang Road, Huangpu districtFormer Residence of Chen WangdaoThis three-story building was the home of famous scholar and educator Chen Wangdao. In 1920, Chen completed the first Chinese translation ofThe Communist Manifesto(共产党宣言). He also served as President of Fudan University from 1952 to 1977.Address:51 Guofu Road, Yangpu districtHuangpu Wharf (码头)HuangpuWharfin Yangpu district was the place for about 650 Chinese students who headed toFrancefrom March 1919 to December 1920 to further their studies. They included Zhou Enlai, later the first premier of thePeopledRepublicofChina, and Deng Xiaoping, later the leader of the PRC.Address:32 Qinhuangdao Road, Yangpu districtThe Memorial of the Site of the First National Congress of the Communist Party ofChinaThe two-story building was completed in 1920 as the residence of CPC founding member Li Hanjun. On July 23, 1921, thirteen members held their first national congress of the Communist Party of China here, marking the birth of the Party.Address:76 Xingye Road, Huangpu district1. When did the editorial office ofNew Youthreturn toShanghai?A. In 1915.B. In 1919.C. In 1920D. In 1921.2. What do we know about Chen Wangdao according to the text?A. He established theNew Youthmagazine.B. He first translatedThe Communist Manifestointo Chinese.C. He went toFrancefor further study.D. He held the first national congress of the CPC.3. Which site was the birthplace of the Communist Party of China?A. Former Site of the Editorial Department, of New Youth.B. Former Residence of Chen Wangdao.C.HuangpuWharf.D. The Memorial of the Site of the First National Congress of the CPC.BPlease take a few seconds and think of your personal biggest goal. Imagine telling someone you meet today what you’re going to do. Imagine their congratulations and their high image of you. Doesn’t it feel good to say it out loud? Don’t you feel one step closer already? Well, bad news: you should have kept your mouth shut, because that good feeling will make you less likely to do it.Any time you have a goal, there is some work that needs to be done to achieve it. Ideally, you would not be satisfied until you’d actually done the work. But when you tell someone your goal and he acknowledges(认可) it, psychologists have found it’s called a “social reality”. The mind is kind of tricked into feeling that it’s already done. And then, because you’ve felt that satisfaction, you’re less motivated to do the actual hard work necessary. This goes againstthe traditional wisdom that we should tell our friends our goals, right?In 1982, Peter Gollwitzer, a Professor of Psychology, wrote a whole book about this. And in 2009, he did some new tests that were published. It goes like this: 163 people across four separate tests—everyone wrote down their personal goal. Then half of them announced their commitment(许诺) to this goal to the room, and half didn’t. Then everyone was given 45 minutes of work that would directly lead them towards their goal, but they were toldthat they could stop at any time. Now those who kept their mouths shut worked the entire 45 minutes on average, and when asked afterwards, said they felt they had a long way to go to achieve their goal. But those who had announced it quit after only 33 minutes on average, and when asked afterwards, said that they felt much closer to achieving their goal.4. What do the words “social reality” in Paragraph 2 mean?A. Completion of the goal.B. Necessary hard work.C. People's acknowledgement.D. A sense of satisfaction.5. What does Peter Gollwitzer try to tell us?A. Writing down the goal is very helpful.B. Achieving personal goal needs more time.C. Keeping the goal secret makes people work harder.D. Making the goal public makes people less satisfied.6. How did Peter Gollwitzer prove his idea about people’s goal?A. By giving figures.B. By giving examples.C. By making a survey.D. By making comparison tests.7. What will probably happen if you tell your friends your goal?A. You will be more confident.B. You will not gain satisfaction.C. You are less likely to realize it.D. You’ll be much moremotivated.CWhile space travel still gets lot of attention, not enough attention has been paid to the exploration of oceans, about which we know much less than the dark side of the moon.Ninety percent of the ocean floor has not even been recorded and while we have been to the moon, the technology to explore the ocean's floors is still being developed. For example, a permanent partially-underwater sea exploration station, called the Sea Orbiter, is currently in development.The oceans play a major role in controlling our climate. But we have not learned yet how to use them to cool us off rather than contribute to our overheating. Ocean organisms are said to hold the promise of cures for a wide of the unique eyes of skate (ray fish) led to advances in conquering blindness, the horseshoe crab was important in developing a test for bacterial pollution, and sea urchins helped in the development of test-tube fertilization(人工授精). The toadfish's' ability to regenerate its central nervous system is of much interest to neuroscientists. A recent Japanese study concluded that the drug Eribulin, which was taken from sea sponges, is effective in fightingwith breast, colon, and Urinary cancer.Given the approaching crisis of water insufficiency, we badly need to improve current methods, of desalinating(淡化) ocean water and make them more efficient and less costly. By 2025, 1.8 billion people are expected to suffer from severe water shortage, with that number jumping to 3. 9 billion by 2050-well over a third of the entire global population.If the oceansdo not make your heart go beating faster, how about engineering a bacterium that eats carbon dioxide — and thus helps protect the world from overheating — and produces fuel which will allow us to drive our cars and machines, without oil? I cannot find any evidence that people young or old, Americans or citizens of other nations would be less impressed or less inspired with such a breakthrough than with one more set of photos of a faraway galaxy or a whole Milky Way full of stars.8. What does the author think about the ocean exploration?A. It is equal to the space exploration.B. It is well developed.C. It deserves more attention and devotion.D. It is beyond our knowledge.9. What technology has been developed to make use of the oceans?A. Curing human diseases with ocean organisms.B. Preventing the world getting warmer.C. Mapping the global ocean floor.D. Removing salt from sea water.10. What does the author imply in the last paragraph?A. The temperature rise will be overcome by a bacterium.B. Solving the existing problems is more significant.C. The space exploration is worth the efforts.D. The ocean exploration is not inspiring.11. What is the best title of the passage?A. Oceans, the Last Hope.B. Oceans, the Hidden Treasure.C. Space, the Final Frontier.D. Space, the Faraway Dream.DIn the summer of 2016, I gave a talk at a small conference in northernVirginia. I began by admitting that I’d never had a social-media account; I then outlined arguments for why other peopleshould consider removing social media from their lives. The event organizers uploaded the video of my talk to YouTube. Then it was sharedrepeatedly on Facebook and Instagram and, eventually, viewed more than five million times. I was both pleased and annoyed by the fact that my anti-social-media talk had found such a large audience on social media.I think of this event as typical of the love-hate relationships many of us have with Facebook, Instagram, and other social-media platforms. On the one hand, we’ve grown cautious about the so-called attention economy, which, in the name of corporate(公司的) profits, destroys social life gradually and offends privacy. But we also benefit from social media and hesitate to break away from it completely. Not long ago, Imet a partner at a large law firm in Washington, D.C., who told me that she keeps Instagram on her phone because she misses her kids when she travels; looking through pictures of them makes her feel better.In recent months, some of the biggest social-media companies, Facebook and Twitter, in particular, have promised various reforms. In March, Mark Zuckerberg announced a plan to move his platform toward private communication protected by end-to-end encryption(端对端加密); later that month, he put forward the establishment of a third-party group to set standards for acceptable content.All of these approaches assume that the reformation of social media will be a complex, lengthy, and gradual process. But not everyone sees it that way. Alongside these official responses, a loose collective of developers that calls itself the IndieWeb has been creating another alternative. They are developing their own social-media platforms, which they say will preserve what’s good about social media while getting rid of what’s bad. They hope to rebuild social media according to principles that are less corporate and more humane(人道的).12. Why did the author feel annoyed when his video was spread online?A. His video caused many arguments.B. His video was shared without his permission.C. His talk was opposed by a large amount of people.D. His video’s popularity on social media is against his talk.13. Why does the author mention the story of his partner in paragraph 2?A. To prove that social media has some benefits.B. To advise people to break away from social media.C. To tell the negative effects social media may produce.D. To describe people’s complicated relationships with social media.14. What is the purpose of the reform made by some social-media companies?A. To attract more users.B. To improve network environment.C. To make more profits.D. To provide more convenientservice.15. What does the IndieWeb intend to do?A. Develop new social-media platforms.B. Remove social media from people’s lives.C. Improve the existing social-media principles.D. Help social-media companies to make reformation.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学年上海市外国语大学附属大境中学高三英语上学期期中考试试卷及答案解析

2020-2021学年上海市外国语大学附属大境中学高三英语上学期期中考试试卷及答案解析第一部分阅读（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AEver wonder why there are so many people polluting the earth? Ever say to yourself：Hey, I wish that I could do more to help the environment? Have you ever thought about trying to help the earth but never really did it? Well, here are some pretty easyand skillful ideas for that green - earth desire inside you.●Turn off your computer. By leaving it on all day you are creating more CO2than a regular passenger would, driving to and from work in one day.● Ride your bike or carpool (合用汽车).Obviously, youare creating less CO2which will help the ozone(臭氧).● Make a garden. Even simply grow some plants in your kitchen, which will help produce more oxygen while eating up some of that evil CO2.● Buy local groceries. It creates less impact on the environment. Besides, you're supporting your local farmers.● Recycle. You had to see this coming. But you have no idea how much you are helping the environment by simply reusing a water bottle instead of buying a huge pack at the store.● Don't run the water while brushing. It saves you money and helps the water resources.● Open the curtains. Natural light is much prettier and it will keep the energy usage down.● Rechargeable batteries. You have no idea how much it takes to get rid of batteries. Do yourself a favor. Save some money and some energy.1. If you don't want to create more CO2, you may_______.A. turn off your computer or open the curtainsB. turn off your computer or ride your bike or carpoolC. make a garden or open the curtainsD. use rechargeable batteries or make a garden2. Which of the following can best describe the function of the first paragraph?A. Main body.B. Argument.C. Lead - in.D. Conclusion.3. The main idea of the passage is about________.A. the importance of environmental protectionB. some ways about how to prevent pollutionC. some suggestions about how to save energyD. some suggestions about environmental protectionBIs homeschooling good or bad? That is a question that many parents ask themselves. In my opinion, homeschooled kids can give reliable answers.Kayla Murray, who lives inGreensboroNorth Carolina, started homeschooling almost eight years ago, after attending two local schools. “Homeschooling is school at home,” like the name says, but it’s not just that/ she says. “You're able to learn more and do more.”Having experienced learning at both school and home, Kayla says that she prefers the latter. “With homeschooling, I can do schoolwork in my pajamas, and no one cares,” she says, “you also have more chances. Earlier this year, my family and I were able to take a short vacation and go to an air show. My siblings and I get to take the day off for our birthdays. This year, I spent that time reading and playing the piano and guitar.”There are, however,drawbacksof being homeschooled, Kayla says, especially “the lack of people”. While she doesn't miss homework, al school, she did enjoy getting to see my friends every day.”Matthew Dimmette, also fromGreensboro, used to be a homeschooler. He now attends public high school. He says being homeschooled is quite different from going to public school. The differences depend on how you arc homeschooled and the things you do. “For me, it wasn't really different in terms of the classes but the school environment was a big change atter hearting at home. says Matthew.Talking about his homeschooling experience, Matthew says the best part of it was being able to learn what he wanted to. Yet the main disadvantage was that he couldn't do many experiments in homeschooling unless taking classes at different places. “My interest in science has been growing quickly in recent years, so I chose to go to public school,” he says.4. What does Kayla like about learning at home?A. She can spend her time more freely.B. She can always stay with her siblings.C. She can play the instruments she likes.D. She can celebrate her birthday at home.5. What does the underlined word “drawbacks” in Paragraph 4 probably mean?A. Concerns.B. Reasons.C. Changes.D. Problem.6. Why did Matthew choose to go to public school?A. He wanted to make more friends.B. He wanted to do experiments in labs.C. He wanted to take all kinds of classesD.He wanted to experience the school environment7. What in the authors attitude cowards homeschooling?A. Supportive.B. Doubtful.C. Uninterested.D. Unclear.COnline education has grown fast over the past ten years. The explosion of technology has made teaching outside the traditional classroom possible for teachers and has provided learners with easy access to course materials. Its attractiveness, benefits, and challenges are addressed.In April, 2005, I was approached by a student who was interested in our doctoral program. However, the first question out of her mouth was, “Do you offer any online courses?” Later that day, as I was reading the conference program guide trying for interesting presentations, I noticed many workshops on web-based learning and online education. I later attended two of those workshops and met several professors from different universities who had either taught online courses for quite some time or who were discovering the best practice for teaching online. These experiences helped me realize at least to some extent the degree of growth in online education.My responsibilities for the term included gaining more understanding of online education. Consequently, I made several attempts to enrich my knowledge of distance learning and online teaching. I consulted with my colleagues who were teaching online courses. This helped me recognize the importance of getting materials prepared even before the start of a term. I also learned that online courses may consume more time than regular classroom teaching. And I attended several workshops regarding online education and established a network with those who were involved in online programs at other universities. I will consider these people as my consultants as I begin to design my own online course. Also, I conducted a brief survey with 15 students and two faculty members who had taken or taught an online course before to understand their experience. Eventually I completed a literature review which gave me the foundation and the background of understanding the need for online education.8. What benefits the development of online education?A. Teachers’ good teaching ability.B. Lack of traditional classrooms.C. Learners’ access to free courses.D. The rapid advance of technology.9. Why did the author take a student for example?A. To show students’ love for the doctoral program.B. To persuade learners of traditional education.C. To explain the growing trend of online education.D. To predict the future of the teaching career.10. What caused the author to know more about online education?A. The appetite for knowledge.B. The professional responsibilities.C. The requirement of research.D. The colleagues’ encouragement.11. What is the author’s attitude to online education?A. Carefree.B. Doubtful.C. Supportive.D. Unwilling.DEvery day, millions of shoppers hit the stores in full force, searching wildly for the perfect gift.Aside from purchasing holiday gifts, most people regularly buy presents for other occasions throughout the year, including weddings, birthdays, anniversaries, and graduations. This frequent experience of gift-giving cancause uncertain feelings in gift-givers. Many enjoy the opportunity to buy presents because gift-giving offers a powerful means to build stronger bonds, while many worry that their purchases will disappoint rather than delight the intended recipients (接受者).Anthropologists describe gift-giving as a positive social process, serving various political, religious, and psychological functions. Economists, however, offer a less favorable view. According to Waldfogel, gift-giving represents an objective wasteof resources. People buy gifts that recipients would not choose to buy on their own, or at least not spend as much money to purchase (a phenomenon referred to as‘‘the deadweight loss of Christmas”).What is surprising is that gift-givers have much experience acting as both gift-givers and gift-recipients, but nevertheless tend to overspend each time they set out to purchase a meaningful gift. In the present research, we propose a unique psychological explanation for this overspending problem — gift-givers link how much they spend with how much recipients will appreciate the gift. Though it seems natural to gift-givers, such an assumption may be unfounded. Indeed, we propose that gift-recipients will be less likely to base their feelings of appreciation on the value of a gift than givers assume.Why do gift-givers assume that gift price is closely linked to gift-recipients’ feelings of appreciation? Perhaps givers believe that more expensive gifts communicate a stronger sense ofthoughtfulness and consideration. According to Camerer and others, gift-giving represents a symbolic ritual (习俗), by which gift-givers attempt to signal their positive attitudes towards the recipient and their willingness to invest resources in a futurerelationship.In this sense, gift-givers may be motivated to spend more money on a gift in order to send a “stronger signal”. As for gift-recipients, they may not interpret smaller and larger gifts as representing smaller and larger signals of thoughtfulness and consideration.The idea of gift-givers and gift-recipients being unable to account for the other party’s viewpoint seems confusing because people slip in and out of these roles every day. Yet, despite the experience as both givers and receivers, people often struggle to apply information gained from one role in another. In theoretical terms, people fail to use information about their own preferences and experiences to produce more efficient outcomes in their exchange relations. In practical terms, people spend hundreds of dollars each year on gifts, but somehow never learn to estimate their gift expense according to personal insight.12. The author uses “the deadweight loss of Christmas” in Paragraph 2 to express ________.A. gift-givers don’t spend much money during holidaysB. gift-givers don’t ask recipients what gifts they preferC. gift-givers buy improper and expensive giftsD. gift-givers have difficulty in choosing gifts13. According to the passage, people buy gifts to ________.A. receive gifts in returnB. enjoy the feeling of shoppingC. help recipients to save moneyD. better relationships with recipients14. What can we learn from the passage?A. People’s high living standards require expensive gifts.B. Gift-givers buy gifts based on their experiences as recipients.C. Anthropologists think gift-giving meets different human needs.D. Recipients judge the depth of friendship according to the gift price.15. Why did the author write this article?A. To criticize people’s gift-buying habits.B. To analyze people’s gift-giving behaviors.C. To offer advice on how to improve relationships.D. To remind people not to overlook others’ preferences.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。

上海外国语大学附属大境初级中学2019-2020学年九年级上学期期中数学试题

试卷第 5页，共 5页
13．在 ABC 中， AB AC 5 ， cot A 4 ，那么 ABC 的面积是
．
3
14．如图， Rt△ABC 中， BAC 90 ， AD BC 于点 D，若 AC 12 ， sin B 4 ，则 5
BD
．
15．如图，在 ABC 中，已知 AD 是 BAC 的平分线，DE ∥ AB ，交 AC 于点 E，AB 15 ，
20．已知：如图，在平行四边形 ABCD 中，点 E 是边 CD 上的一点， DE : CE 1: 2 ，联
结 AE 与对角线 BD 相交于点 F， AE 4 ，
(1)求 A ，用 a ， b 的线性组合表示 AF ．
21．已知：如图，在 ABC 中，A 45 ，点 D 是 AB 中点，E 在边 AC 上，且 AED ABC ，
10．如图，已知 l1 ∥l2 ∥l3 ， CH 2，DH 3，AB 4.5 ，那么 AG
．
11．点 C 是线段 AB 的黄金分割点（AC＞BC），若 AC＝2 则 AB BC ＝
．
12．在 ABC 中， A 与 B 是锐角， sin A 2 ， cot B 3 ，那么 C
2
3
度．
（1）求证：AB＝OB；
（2）若 BC＝3，DC＝2，且 AD：AB＝
10
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OA OB
＝
OD AD
．
24．已知：如图，在平面直角坐标系中，四边形 ABCD 的顶点坐标分别为 A1，0 ， B 0, 2 ， C 2，0 ， D1, 3 ．
(1)求 tanD 的值； (2)在坐标轴上找一点 E，使得 ABE 与△BCD 相似，求点 E 的坐标． 25．已知：如图，在 Rt△ABC 中， C 90，BC 4，AC 2 ，P 是斜边 AB 上的一个

2020-2021学年上海市外国语大学附属大境中学高三英语期中试题及参考答案

2020-2021学年上海市外国语大学附属大境中学高三英语期中试题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ASheffieldLincoln College of EnglishClasses for foreign students at all levels.3 months, 6 months, 9 months and one year course.Open all year.Small class (at most 12 students).Library, language laboratory and listening center.Accommodation (住宿)with selected families.25 minutes from London.Course fees for English for one year are￡1,380 with reduction for shorter periods of study.1.This passage is probably taken from _______.A.an advertisementB.a noticeC.a posterD.a piece of news2.Who will be accepted by this college?A.Both foreign and native students.B.Only foreign beginners and the advanced.C.Foreign students from beginners to the advanced.D.Only foreign students advanced.3.While you stay there, who will take care of you?A.Your parents.B.Your classmates.C.The school where you study.D.The family you have chosen.BWater keeps us alive. When it runs out, we have a problem.About one out of four people on the planet are facing a shortage of water. Seventeen countries around theworld are dealing with high-water stress. This means they are using almost all the water they have access to. Many are dry countries. Some waste much of their water. Some may currently use too much of their groundwater that they should be saving. Several big cities face acute shortages. These include Sao Paulo, Brazil; Chennai, India; and Cape Town, South Africa. A year ago, Cape Town faced nay Zero-the day when all its dams would he dry.Climate change adds to the risk of water shortages. Rainfall is less steady. The water supply becomes less reliable. The days grow hotter. More water evaporates(蒸发)from lakes and rivers even as demand for water increases. By 2030, the number of cities in the high-stress category may have risen to 45 and include almost 470 million people.All over the world, farmers compete with city residents for water. Rich urban places, such as Los Angeles, use too much water for pools and golf courses. But the worst problem is the growth of cities. Bangalore, India, for example, had a few years with little rain. It built over its many lakes or filled them with city waste. The lakes are no longer the rain water storage tanks they once were. Bangalore now imports water. A lot of the imported water, however, gets lost on the way to Bangalore.To address this issue, what can be done? First, cities can plug leaks in their water distribution system. Wastewater can be recycled. Rain can be harvested and saved for hard times. Lakes and wetlands can be cleaned up and old wells can be restored. And farmers can switch from water-intensive crops like rice to less-thirsty crops like millet(小米).Experts are looking at ways to reduce the number of people on the planet. They are looking at ways to reduce the size of cities. They are looking for ways to encourage people, factories and farmers to use less water.4. What can we know from Paragraph 2?A. A quarter of the world's population is living with water shortages.B. Nearly all countries are facing acute water shortages now.C. Underground water should he used to meet the water demand.D. Measures have been taken to deal with the water shortage in India.5. What is the main idea of the third paragraph?A. Rainfall is not as steady as before.B. Climate change may lead to water shortages.C. The water supply relies more on rainfall.D. Hotter weather changes the water demand.6. What can farmers do to deal with water shortage?A. Plug leaks in the water distribution system.B. Clean up lakes and wetlands and restore wells.C. Reduce the number of people in the cities.D. Grow less-water consumption crops instead.7. What will be discussed if the passage continues?A. How to prevent from climate change.B. How to inspire people to save water.C. How to recycle wastewater in citiesD. How to make people get access to clean water.CWe touch our faces all the time, and it had never seemed to be a big problem—until COVID-19 arrived. Touching our faces—the "T-zone" of our eyes, nose and mouth in particular—can mean giving ourselves the deadly virus.This is why organizations like the Centers for Disease Control and Prevention (CDC) have suggested that we avoid touching our faces. "Just stop this simple behavior," William Sawyer, founder of Henry the Hand, a nonprofit organization that promotes hand hygiene (卫生), told The Washington Post. "It's the one behavior that would be better than any vaccine (疫苗) ever created."Yet, stopping this "simple" behavior might be harder than you think because it's already hardwired (固定存在于) into our system.Some face touchingis an automatic reflex (反射) —like when there is an itch (痒) on your nose, you'll scratch (挠) it without thinking. According to CNBC, a 2014 study found that touching your face also helps to reduce stress and regulate emotions. For example, you're more likely to do it when you feel awkward or embarrassed. According to Dacher Keltner, a psychologist at the University of California Berkeley, US, this action may also come with a social function: When you are talking to someone and want to change the subject, for example, touching your face is like "the curtains on a stage, closing up one act of the social drama, ushering (引导) in the next," Keltner told the BBC.Moreover, face-touching in almost all of these occasions is subconscious, which means it's very hard to change "because you don't even know you're doing it", said Sawyer. But you're not alone. In a 2015 study, wherea group of medical students were filmed in class, it was found that they touched their faces an average of 23 times an hour—with 44 percent of the touches being in the "T-zones". That was particularly surprising since medical students were supposed to know better.Since it's so hard to shake the habit, maybe the easiest way is to wash our hands more often. This way, we can be sure that our hands are free from the novel coronavirus.8. What do the first two paragraphs talk about?A. The best way to fight COVID-19B. How organizations are fighting COVID-19.C. Typical hand hygiene problems in the fight against COVID-19.D. The necessity to avoid touching our faces to fight COVID-19.9. Why is it hard for people to stop touching their faces?A. It makes people feel more confident.B. Many are unaware of this behavior's risks.C. They usually do it automatically and subconsciouslyD. Many think the action helps them express their emotions.10. Which of the following is a social function of touching faces, according to the text?A. Using it as a sign to change the topicB. Bringing a conversation to an end.C. Showing an interest in the ongoing subject.D. Making others feel relaxed while talking.11. What is the author's purpose in mentioning a 2015 study on a group of medical students?A. To give tips on how to stop touching faces.B. To prove that it is common for people to touch their faces.C. To show it is impossible to shake the habit of touching your face.D. To show how hygiene awareness helps people avoid touching their faces.DDragon boating is a team sport that has its root in ancient China. The boats are decorated with a dragon head and tail. In recent years cancer survivor groups have got involved in the sport to help make friends and help rebuild their lives.On a recent Saturday morning, a group of 20 women were on a boat in the Anacostia River in Washington DC. They moved their paddles(船桨)in rhythm to the call of a coach. The women belong to the dragon boat team GoPink! DC, which trains weekly. It also races against other breast cancer survivor teams in dragon boat festivals. As a result, GoPink! DC won medals in this Washington dragon boat festival.Lydia Collins joined five years ago after finding out she had breast cancer. “I was diagnosed with breast cancer.I was demoralized because of my illness - I lost all interest in life and wouldn't even get out of bed to eat. But now I love the team spirit. I just love everything about it. It is like a floating support group on the water.”The paddles are breast cancer survivors and their supporters. Annette Rothemel helped establish(建立)the group in 2006. She is a researcher with the National Institutes of Health as well as a breast cancer survivor. “It issort of an easy entry sport because on the same boat people at different levels can be doing the same sport.” But Ms Rothemel saysdragon boating can be physically demanding, especially for someone who is sick and getting treatment for cancer.“It’s hard but I think you have to challenge yourself in life. This is something I look forward to. I get to be out here with my sisters and supporters that understand what I’m going through and help motivate me. So it makes me stronger and it makes me feel better,” another cancer survivor Rhonda Hartzel said.Annette Rothemel says the cancer survivors feel a sense of sisterhood and share good times when they paddle together. She says both feelings are treasured by the team.12. What do the underline wordsdemoralizedIn para.3 probably mean?A. depressedB. anxiousC. astonishedD. awkward13. What can we know about Lydia Collims from the text?A. she helps establish Go Pink !DCB. she tries to find a cure for the cancerC. she benefits from the dragon boat raceD. she gives up hope because of her illness14. How can the dragon boat race help the cancer survivorsA. forget their tough experiencesB. recover physically and mentallyC. get rid of the pains of their cancerD. enjoy their rest life without sufferings15. What does the text tell us about Annette Rothemel?A. she is an expert in studying the cause of the cancerB. she helps the cancer survivors in financial difficultiesC. she believes there is a healthful result from the dragon boat raceD. she thinks it unwise for the patient to join in the dragon boat race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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上海外国语大学附属大境初级中学2020年期中单元测试一、选择题1．一物体以一定的初速度在水平地面上匀减速滑动．若已知物体在第1秒内位移为8.0 m，在第3秒内位移为0.5 m．则下列说法正确的是A．物体的加速度一定为3.75 m/s2B．物体的加速度可能为3.75 m/s2C．物体在第0.5秒末速度一定为4.0 m/sD．物体在第2.5秒末速度一定为0.5 m/s2．如图甲、乙所示的x–t图像和v–t图像中给出四条图线，甲、乙、丙、丁代表四辆车由同一地点向同一方向运动的情况，则下列说法正确的是（）A．甲车做直线运动，乙车做曲线运动B．0～t1时间内，甲车通过的路程小于乙车通过的路程C．0～t2时间内，丙、丁两车在t2时刻相距最远D．0～t2时间内，丙、丁两车的平均速度相等3．如图所示，在水平力F的作用下，木块A、B保持静止．若木块A与B的接触面是水平的，且F≠0．则关于木块B的受力个数可能是（）A．3个或4个B．3个或5个C．4个或5个D．4个或6个4．短跑运动员在100m竞赛中，测得7s末的速度是9m/s，10s末到达终点的速度是10.2m/s，则运动员在全程内的平均速度为（）A．9m/s B．10m/s C．9.6m/s D．10.2m/s5．物块静止在固定斜面上，下图所示的四幅示意图中，正确标明了斜面对物块的支持力的（）A．B．C．D．6．一个质点沿直线运动，其速度图象如图所示，则质点（）A．在内做匀加速直线运动B．在内做匀速直线运动C．在内做匀加速直线运动D．在内保持静止7．下列叙述中不符合历史事实的是（）A．古希腊哲学家亚里士多德认为物体越重，下落得越快B．伽利略发现亚里士多德的观点有自相矛盾的地方C．伽利略认为，如果没有空气阻力，重物与轻物应该下落得同样快D．伽利略用实验直接证实了自由落体运动是初速度为零的匀速直线运动8．如图所示，一个物体受到1N、2N、3N、4N四个力作用而处于平衡．现保持1N、3N、4N三个力的方向和大小不变，而将2N的力绕O点旋转60°，此时作用在物体上的合力大小为()A．2 N B．22 N C．13 N D．33 N9．如下图所示，两木块的质量分别为m1和m2，两轻质弹簧的劲度系数分别为k1和k2，上面木块压在上面弹簧上(但不拴接)，整个系统处于平衡状态．现缓慢向上提上面的木块，直到它刚离开上面的弹簧．在这个过程中，下面木块移动的距离为( )A．11m gk B．22m gk C．12m gk D．21m gk10．水下潜水器某次海试活动中，完成任务后从海底竖直上浮，从上浮速度为v时开始计时，此后匀减速上浮，经过时间t 上浮到海面，速度恰好为零，则蛟龙号在()00t t t <时刻距离海平面的深度为（）A ．2vtB ．0012t vt t ⎛⎫- ⎪⎝⎭ C ．202t t v D ．()202v t t t- 11．一物体做加速直线运动，依次经过A 、B 、C 三位置，B 为AC 的中点，物体在AB 段的加速度为a 1，在BC 段的加速度为a 2．现测得B 点的瞬时速度v B =（v A +v C ）/2，则a 1与a 2的大小关系为( )A ．a 1 >a 2B ．a 1<a 2C ．a 1=a 2D ．无法比较12．一物体由静止开始沿直线运动，其加速度随时间变化的规律如图所示．取物体开始运动的方向为正方向，则下列关于物体运动的v －t 图象正确的是( )A ．B ．C ．D ．13．如图所示，斜面小车M 静止在光滑水平面上，一边紧贴墙壁．若再在斜面上加一物体m ，且M 、m 相对静止，此时小车受力个数为（）A ．3B ．4C ．5D ．614．2019年7月16日，在韩国光州世界游泳锦标赛跳水项目男女混合团体决赛中，中国组合林珊/杨健获得该项目金牌．将林珊进入水中后向下的运动视为匀减速直线运动，该运动过程的总时间为t ．林珊入水后前2t 时间内的位移为x 1，后2t 时间内的位移为x 2，则21x x 为A．1：16 B．1：7 C．1：5 D．1：315．2016年第31届夏季奥运会在巴西的里约热内卢举行，下列比赛中可把研究对象看成质点的是（）A．研究苏炳添在百米跑比赛时的起跑技术B．研究乒乓球男子单打冠军马龙的发球动作C．研究女子3米板冠军施廷懋的跳水动作D．研究女子50米步枪三姿比赛中杜丽射出的子弹轨迹16．汽车以20 m/s的速度在平直公路上行驶，急刹车时的加速度大小为4 m/s2，则自驾驶员急踩刹车开始，2 s与6 s时汽车的位移之比为( )A．1∶3 B．2∶3 C．16∶25 D．4∶517．关于速度和加速度，下列说法中正确的是A．加速度大的物体速度变化大B．加速度为零的物体速度也为零C．加速度大的物体速度变化快D．加速度不为零的物体速度必定越来越大18．关于弹力的说法，正确的是（）A．两物体只要直接接触，就一定产生弹力B．挂在电线下的电灯受到向上的拉力，是因为电线发生微小形变产生的C．绳对物体的拉力方向总是沿绳方向的，但可以不指向绳收缩的方向D．木块放到桌面上受向上的弹力，是由于木块发生微小形变产生的19．如图所示，一条细绳跨过光滑的定滑轮连接两个小球A、B，它们都穿在一根光滑的竖直杆上，不计滑轮的质量，当两球平衡时OA绳与水平方向的夹角为2θ，OB绳与水平方向的夹角为θ，球B的质量为m，则A．A球的质量为B．A球的质量可能小于B球的质量C．滑轮轴受到的作用力大小为D．细绳的张力大小为20．质点做直线运动的速度—时间图象如图所示，该质点A．在第1秒末速度方向发生了改变B．在第2秒末加速度方向发生了改变C．在前2秒内发生的位移为零D．第3秒和第5秒末的位置相同二、多选题21．质点做直线运动的v-t 图象如图所示，则（）A．3 ~ 4 s 内质点做匀减速直线运动B．3 s 末质点的速度为零，且运动方向改变C．0 ~ 2 s 内质点做匀加速直线运动，4 ~ 6 s 内质点做匀减速直线运动，加速度大小均为 2 m/s2D．6 s内质点发生的位移为 8 m22．如图所示，在倾角为α的传送带上有质量均为m的三个木块1、2、3，中间均用原长为L、劲度系数为k的轻弹簧连接起来，木块与传送带间的动摩擦因数均为μ，其中木块1被与传送带平行的细线拉住，传送带按图示方向匀速运行，三个木块处于平衡状态．下列结论正确的是：A．2、3两木块之间的距离等于cosmgLkμα+B．2、3两木块之间的距离等于(sin cos)mg Lkαμα++C．2、3两木块之间的距离等于1、2两木块之间距离的两倍D．如果传送带突然加速，相邻两木块之间的距离都将保持不变23．如图所示，两根轻质细线的一端分别固定在倾斜杆上的a点和b点、另一端拴在O 点，Oa沿水平方向，Oa与Ob夹角为钝角，现在对O点一个竖直向下的拉力F，保持F大小不变，缓慢向虚线方向转动，转过θ(θ=90°)。

倾斜杆、绳Oa、绳Ob和F都始终在竖直平面以内，且O、a、b的位置不变。

则下列判断正确的是( )A．Oa上的拉力先增大后减小B．Oa上的拉力不断增大C．Ob上的拉力先增大后减小D．Ob上的拉力不断减小24．两个中间有孔的质量均为M的小球用一轻弹簧相连，套在一水平光滑横杆上，两个小球下面分别连一轻弹簧．两轻弹簧下端系在同一质量为m的小球上，如图所示.已知三根轻弹簧的劲度系数都为k，三根轻弹簧刚好构成一个等边三角形．则下列判断正确的是：A．水平横杆对其中一个小球的支持力为Mg+mgB．连接质量为m小球的其中一个轻弹簧的伸长量为C．套在水平光滑横杆上的轻弹簧的形变量为D．连接质量为m小球的其中一个轻弹簧的弹力为25．如图，一个弹簧台秤的秤盘质量和弹簧质量都可以不计，盘内放一个物体P处于静止．P的质量为12kg，弹簧的劲度系数k=800N/m．现给P施加一个竖直向上的力F，使P 从静止开始向上做匀加速运动．已知在前0.2s内F是变化的，在0.2s以后F是恒力，则( )A．F的最小值是90N B．0～0.2s内物体的位移为0.2 mC．F最大值是210N D．物体向上匀加速运动加速度为5.0m/s2三、实验题26．某同学做“验证力的平行四边形定则”的实验情况如图甲所示，其中A为固定橡皮条的图钉，O为橡皮条与细绳的结点，OB和OC为细绳，图乙是在白纸上根据实验结果画出的图：(1)如果没有操作失误，图乙中的F与F'两力中，方向一定沿AO方向的是_________；(2)本实验采用的科学方法是_________；A．理想实验法 B．等效替代法C．控制变量法 D．建立物理模型法(3)实验时，主要的步骤是：A．在桌上放一块方木板，在方木板上铺一张白纸，用图钉把白纸钉在方木板上；B．用图钉把橡皮条的一端固定在板上的A点，在橡皮条的另一端拴上两条细绳，细绳的另一端系着绳套；C．用两个弹簧测力计分别钩住绳套，互成角度地拉橡皮条，使橡皮条伸长，结点到达某一位置O，记录下O点的位置，读出两个弹簧测力计的示数；D．按选好的标度，用铅笔和刻度尺作出两只弹簧测力计的拉力1F和2F的图示，并用平行四边形定则求出合力F；E. 只用一只弹簧测力计，通过细绳套拉橡皮条使其伸长，读出弹簧测力计的示数，记下细绳的方向，按同一标度作出这个力F'的图示；F. 比较F'和F的大小和方向，看它们是否相同，得出结论。

上述步骤中，①有重要遗漏的步骤的序号是_________和___________；②遗漏的内容分别是_________和___________。

27．为探究物体的加速度与力、质量的关系。

（1）甲同学采用装置甲，实验时，小盘和砝码牵引小车，使小车做初速度为零的匀加速运动。

①此实验中可以不测量小车加速度的具体值，原因是________________。

②通过改变__________，就可以改变小车所受的合力。

（2）乙同学采用图乙所示的气垫导轨装置进行实验，其中1G 、2G 为两个光电门，它们与数字计时器相连，当滑行器通过1G 、2G 光电门时，光束被挡的时1t ∆、2t ∆都可以被测量并记录，滑行器连同上面固定的一条形挡光片的总质量为M ，挡光片宽度为D ，光电门间距离为x ，牵引码的质量为m ，回答下列问题：①若取0.4kg M =，改变m 的值，进行多次实验，以下m 的取值不合适的一个是__________。

A ．5g m =B ．15g m =C ．40g m =D ．400g m =②在此实验中，需要测得每一个牵引力对应的加速度，求得的加速度的表达式为__________。

（1t ∆，2t ∆，D ，x 表示）28．在“探究速度随时间变化规律”的实验中，装置如图1所示．从实验中挑选一条点迹清晰的纸带，每5个点取一个计数点，用刻度尺测量计数点间的距离如图2所示，已知打点计时器所用电的频率为50Hz.（1）从图2中所给的刻度尺上读出A 、B 两点间的距离1s =____________cm;（2）在打下D 点时小车的瞬时速度D V =__________m/s （计算结果保留两位有效数字）（3）实验中纸带的______________（填“左”或“右”）端与小车相连接．29．某同学在“探究弹力和弹簧伸长的关系”时：(1)实验装置如图甲、乙所示，让刻度尺零刻度与弹簧上端平齐,在弹簧下端挂1个钩码,静止时弹簧长度为l1,可读出其示数l1=_____cm.(2)在弹簧下端分别挂2个、3个、4个、5个相同钩码,静止时弹簧长度分别是l2、l3、l4、l5.已知每个钩码质量是50g,挂2个钩码时,弹簧弹力F2=___N(当地重力加速度g=9.8m/s2). (3)某同学使用两条不同的轻质弹簧a和b，得到在弹性限度内弹力与弹簧总长度的F-l图像，如图所示，根据图像可知___（选填选项前的字母）A．a的原长比b的短B．弹力与弹簧的长度成正比C．a的劲度系数比b的大D．测量同样的力，a的精确度比b的高30．打点计时器是高中物理中重要的物理实验仪器，图中甲、乙两种打点计时器是高中物理实验中常用的，请回答下面的问题．(1)甲图是________打点计时器，采用的是________交流电源．(填“低压”、“220V”)(2)乙图是________打点计时器，采用的是________交流电源．(填“低压”、“220V”)(3)在某次实验中，物体拖动纸带做匀加速直线运动，打点计时器所用的电源频率为50 Hz，实验得到的一条纸带如图所示，纸带上每相邻的两个计数点之间都有4个点未画出．按时间顺序取0、1、2、3、4、5六个计数点，实验中用直尺量出各计数点到0点的距离如图所示(单位：cm)①在计数点1所代表的时刻，纸带运动的瞬时速度为v1＝________ m/s，物体的加速度a ＝_______ m/s2.(保留两位有效数字)②该同学在测量的时候没有将计数点5的数值记录下来，根据前面的数值可以推算出计数点5到0点的距离为______cm.四、解答题31．如图所示，绳OC与竖直方向30°角， O为质量不计的光滑的滑轮，用一根绳连接物体A和B,已知物体B重1000N，物体A重400N，物块A空中静止，物体B在地面上静止。