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  • ID:3-8158345 上海市控江中学2020-2021学年高二第一学期数学期中考试卷含答案(pdf)

    高中数学/期中专区/高二上册

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    • 2020-11-13
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  • ID:3-7576987 上海市青浦2020年高一下学期数学期末考试卷及答案(PDF版含答案)

    高中数学/期末专区/高一下册

    • 2020-07-14
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  • ID:2-7536466 上海市嘉定区2020年封浜中学高一下学期语文期末考试卷扫描版含答案

    高中语文/期末专区/高一下册

    • 2020-07-03
    • 下载1次
    • 2002.89KB
  • ID:3-7536452 上海市嘉定区2020年封浜中学高一下学期数学期末考试卷及答案

    高中数学/期末专区/高一下册

    • 2020-07-03
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  • ID:4-7536397 上海市嘉定区封浜中学2020年高二下学期英语期末考试卷PDF版(无听力音频含文字材料)

    高中英语/期末专区/高二下学期

    • 2020-07-03
    • 下载1次
    • 5251.97KB
  • ID:4-7536388 上海市嘉定区封浜中学2020年高一下学期英语期末考试卷及答案(无听力音频含文字材料)

    高中英语/期末专区/高一下学期

    • 2020-07-03
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  • ID:3-7465146 上海市位育中学2020年高一下学期数学第二次月考试卷及答案(PDF含答案)

    高中数学/月考专区/高一下学期

    • 2020-06-16
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  • ID:3-7456692 上海市七宝中学2020年高三下学期数学高考三模试卷及答案(PDF)

    高中数学/高考专区/三轮冲刺

    • 2020-06-15
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    • 1364.82KB
  • ID:3-7446920 上海市虹口区2019-2020学年高二第二学期数学期末统考试卷及答案(PDF含答案)

    高中数学/期末专区/高二下册

    • 2020-06-11
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  • ID:3-7435968 上海市大同中学2019-2020学年高二下学期数学期中考试卷(PDF版含答案)

    高中数学/期中专区/高二下册

    • 2020-06-10
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  • ID:3-7426228 上海市嘉定实验高中2019-2020学年高一下学期数学期中考试卷及答案(PDF图片版)

    高中数学/期中专区/高一下册

    • 2020-06-09
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  • ID:3-7372034 上海市交大附中2019-2020学年高三下学期数学期中考试卷(word扫描版含答案)

    高中数学/期中专区/高三

    • 2020-05-27
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  • ID:4-7310127 上海市奉贤区2020届高三下学期英语二模考试卷(无音频有文字材料)

    高中英语/高考专区/模拟试题

    2019学年奉贤区学科教学质量调研 高三英语 试卷 (2020.0 II. Grammar and Vocabulary Section A Directions:After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank. Plants Scream in the Face of Stress For the first time, researchers appear to have evidence that like animals, those plants deprived of water or (21) ______(force) to endure bodily harm can let out their pain. The study, (22) ______ has yet to be published in a scientific Journal, adds another dimension to scientists (23) ______ (grow) understanding of how plants detect and interact with their surroundings. In recent years, it has become very clear that plants are more sensitive than researchers (24) ______ (think). They respond when touched by insects and turn toward sources of light. “Plants are not just robotic stimulus-response devices,” said Frantisek Baluska of the University of Bonn in Germany. “They’re living organisms which have their own problems.” Actually making their suffering hearable, however, is another matter entirely. (25) ______ (test) that possibility, a team led by Itzhak Khait, a plant scientist at Tel Aviv University in Israel, placed microphones capable of detecting ultrasonic frequencies (超声波频率) four inches from tomato and tobacco plants. The researcher then either stopped watering them or cut their stems. Measuring in the range of 20 to 150 kilohertz (千赫), the researchers found that even happy, healthy plants made the occasional noise. But when cut, tobacco plants emitted (26) ______ average of 15 sounds within an hour of being cut, (27) ______ tomato plants produced 25 sounds. (28) ______ researchers aren't yet sure how plants produce these sounds, Khait and his colleagues proposed one possibility in their paper (29) ______ as water travels through the plants' tubes, air bubbles will form and explode, producing small vibrations. All this “screaming” caused by stress wasn’t in a range detectable by human ears. But organisms that can hear ultrasonic frequencies--like mice, bats or perhaps other plants--(30) ______ possibly hear the plants cries from as far away as 15 feet. Section B Directions:Fill in each blank with a proper word chosen from the box. Each word can be used only once. Note that there is one word more than you need. A. essentially B. round C.stuck D. spirits E.encouraging F. desperately G. strengths H. frustrating I. spilling J. collective K.sealed Italians find “Moments of Joy in this Moment of Anxiety” It started with the national anthem. Then came the piano chords, trumpet blasts, violin serenades (小夜曲) and even the clanging of pots and pans--all of it (31) ______ from people’s homes, out of windows and from balconies, and resounding across rooftops. Finally, on Saturday afternoon, a nationwide (32) ______ of applause broke out for the doctors on the medical front lines fighting the spread of Europe’s worst coronavirus outbreak. Italians remain (33) ______ under house arrest as the nation, the European front in the global fight against the coronavirus, has ordered extraordinary restrictions on their movement to prevent infection. But the music and noise erupting over the streets, from people (34) ______ in their homes, reflects the spirit, resilience and humor of a nation facing its worst national emergency since the Second World War. To the extent that this is a virus that tries people’s souls, it has also demonstrated the (35) ______ of those national characters. In China, patriotic truck drivers risked infection to bring (36) ______ needed food to the people of Wuhan, the epicenter of the outbreak. In Iran, videos show doctors in full combat dress and masks dancing to keep (37) ______ up. And in Italy, the gestures of gratitude and music ring out above the country’s empty streets, while social media feeds fill with (38) ______, sentimental and humorous web videos. Images of nurses collapsed from exhaustion or their faces bruised(使受瘀伤) from tightly (39) ______ masks have also spread across the web in recent days. Parents posted pictures of unicorns and rainbows drawn by young children with the title “It will all be OK.” “We’re Italians, and loving singing is part of our culture,” said Giorgio Albertini, 51, an archaeology professor who clapped from his apartment balcony in the university district of Milan, calling it a way “to feel a community, and to have the (40) ______ grief.” III. Reading Comprehension Section A Directions: For each blank in the following passage there are four words or phrases marked A, B, C and D. Fill in each blank with the word or phrase that best fits the context. Making choices is hard. That would be why researcher Moran Cerf has (41) ______ it from his life. As a rule, he always chooses the second menu item at a restaurant. This is (42) ______ by his research in neuroeconomics(神经经济学) (a somewhat new, divisive field) at Northwestern University. As Business Insider describes, Cerf has extended his ideas--which draw on some controversial ideas in psychology, including ego depletion out--into a piece of advice that, to (43) ______ happiness, people should "build a life that requires (44) ______ decisions by surrounding themselves with people who possess traits they prefer. On an instinctive level, Cerf’s idea (45) ______: Many choices people make are the product of social pressures and the inputs of (46) ______ people around them. One example Cerf furnishes is that, (47) ______ consistently ordering the second menu item, he never picks where to eat. Rather, he (48) ______ his decision to his dining partner--which friend he plans to eat with, probably one he trusts--and always lets them pick. While it's (49) ______ what, if any, scientific principles underlie those pieces of advice, there is no shortage of research showing that choices can sometimes feel more (50) ______ than liberating. An example from Quanta poits (假设) : If you have a clear love of Snickers(士力架), choosing that over an Almond Joy(杏仁巧克力) or a Milky Way(牛奶巧克力) should be a (51) ______. And, as an experiment conducted by neuroscientist Paul Glimcher at NYU shows, most of the time it is, (52) _______ you introduce more choices. When the participants were offered three candy bars (Snickers, Milky Way, and Almond Joy) they had no problem picking their favorite, but when they were given the option of one among 20, including Snickers, they would sometimes drift away from their (53) ______. When the choices were taken away in later trials, the participants would wonder what caused them to make such a bad decision. As Quanta details, according to a model called "divisive normalization(分裂归一化), which has gained some popularity, the way the brain encodes choices has a lot to do with how it values all its options. So, if you have two things that are clearly (54) ______, brain areas involved in decision-making fire in a pattern that makes the decision clear. When the choices are comparable, the brain does its best to focus on the distinctions between the two, but more choices (55) ______ that ability out. 41. A. relieved B. released C. eliminated D. liberated 42. A. influenced B. inherited C. implemented D. informed 43. A. maximize B. balance C. cherish D. seek 44. A. safer B. fewer C. better D. sounder 45. A. stands out B. comes into force C. makes sense D. plays a part 46. A. distinguished B. trusted C. authorized D. honored 47. A. in addition to B. instead of C. in spite of D. regardless of 48. A. conveys B. relates C. submits D. limits 49. A. evident B. unclear C. critical D. inevitable 50. A. confusing B. inspiring C. worrying D. appealing 51. A. stressor B. no-brainer C. challenge D. headache 52. A. after B. before C. when D. until 53. A. preference B. struggle C. status D. direction 54. A. impressive B. insignificant C. unique D. distinct 55. A. crowd B. figure C. sort D. put Section B Directions: Read the following three passages. Each passage is followed by several questions or unfinished statements. For each of them there are four choices marked A, B, C and D. Choose the one that fits best according to the information given in the passage you have just read. (A) One spring day, once the flowers have begun to open, a bee will hover (盘旋) and zip through your yard and dive-bomb your picnic table. While you're thinking about avoiding an attack, that bee is focused on something else entirely: me. A honeybee has about six weeks to live. Today, like most days, her task is to fly as many as three miles from home, stick her long, straw-like tongue into a hundred or so flowers. When the bee has had her fill, she’ll fly home. There the bee will deposit what she has got into the mouth of one of her co-workers, who will relay it to another, and so on for about 20 minutes, until the mixture is ready to be placed into the comb. Then she and her 50,000 or so mates will hover in the dark all night every night, flapping their wings to create hot, breezy conditions to remove the water from the mixture. Several sunrises later, they will seal me off in a golden cell of beeswax. In her lifetime, our bee may visit 4,000 flowers, and yet will produce only one-twelfth of a tea spoon of me. The average American consumes nearly a pound and a half of me every year, in tea, on toast, and beyond. If I do say so myself, I am a timeless treasure. Literally--I never go bad. Unfortunately, my good health is not guaranteed. The problem lies in the growth of industrial agriculture and the use of pest control chemicals, as well as changes in weather patterns, all of which reduce the number of flowers bees have to visit. I'd appreciate your letting your own garden grow just a little wild. My future depends on all of us fostering spring and summers wild flowers, thus helping the bees, who give so much--to you, to me--without ever asking for anything in return. 56. What does “me” refer to in the passage? A. The flower. B. The bee. C. Water. D. Honey. 57. What is the 2nd paragraph mainly about? A. Bees' special talent. B. Bees' hard work. C. Bees' living environment. D. Bees' social behavior. 58. Which one of the following is true according to the passage? A. A bee will always prioritize attacking picnic lovers. B. Before “me” is sealed off in beeswax, the drying process can take a few nights. C. The lifework of a bee satisfies the average demand of an American consumer annually. D. Bees are more likely to visit those deliberately pest-controlled gardens. 59. What is the purpose of the passage? A. To appeal for help for honeybees. B. To talk about the history of a treasure. C. To put forward techniques for gardeners. D. To argue against the control of chemicals. (B) Get Your Unlimited Card at Cineworld Cinemas Enjoy Unlimited Films Watch all the films you want at any Cineworld for just one monthly price. Being an Unlimited card holder gives you access to all the 2D films you can handle for one monthly price. Watch what you want, when you want, as many times as you want. Plus, save money when watching films in 3D and others. After you've been with us for more than 1 year we'll upgrade you to a Premium Card and you'll get into 3D films completely free too! Start enjoying today by using a temporary pass while you wait for your card to arrive in the post. Save On Snacks And Drinks Get 10% off all in-cinema food and drink. Plus get 10% off at Cineworld Starbucks licensed stores. First year card holders get 10% off, whilst Premium card holders get 25% off Cineworld's in-cinema food and drinks including, all drinks, popcorn, nachos, hotdogs, ice cream, pick n mix and much more. Plus all card holders get 10% discounts at?Cineworld Starbucks licensed stores. All you need to do is show your card at the counter and your discount will be applied. Recommend A Friend Unlimited members can get free months of membership when they recommend Unlimited to their friends! Recommend Unlimited to your friends and we’ll give you free months of membership to say thank you. For every friend that signs up using your unique Recommend a Friend code you will both receive one month’s free membership once they have been an active Unlimited member for 90 days. The free month will be automatically added to the end of your current subscription. You can earn a maximum of 12 Free Months with your Recommend a Friend code, so recommend Unlimited to 12 friends and you could get a full year of free Unlimited cinema! 60. The cinema names its membership card “Unlimited” because _______. A. one can have the benefits for good upon joining the membership B. Cineworld members can enjoy as many 2D and 3D films as they like for free C. it frees a member from any regular payment to the movie tickets at Cineworld D. card holders can share limitless discounts and offers with friends and relatives 61. Which of the statement is TRUE according to the passage? A. The benefits above are not available until the card is delivered. B. Premium card holders can have 25% off at a licensed Starbucks. C. Whoever persuades 6 friends into Unlimited can enjoy a half year of free membership. D. A second year of investment is worthwhile if you are a cinema goer. 62. This passage is probably written to ______. A. secure the loyalty of potential customers B. introduce the latest movies and discounts C. promote the popularity of Cineworld cinemas D. give away movie cards to readers for free (C) A rare hole has opened up in the ozone layer above the Arctic, in what scientists say is the result of unusually low temperatures in the atmosphere above the north pole. The hole, which has been tracked from space and the ground over the past few days, has reached record dimensions, but is not expected to pose any danger to humans unless it moves further south. If it extends further south overpopulated areas, such as southern Greenland, people would be at increased risk of sunburn. However, on current trends the hole is expected to disappear altogether in a few weeks. Low temperatures in the northern polar regions led to an unusual stable polar vortex(极地漩涡), and the presence of ozone-destroying chemicals such as chlorine(氯) in the atmosphere – from human activities – caused the hole to form. “The hole is principally a geophysical curiosity,” said Vincent-Henri Peuch, director ofthe Copernicus Atmosphere Monitoring Service. “We monitored unusual dynamic(动态的) conditions, which drive the process of chemical depletion of ozone. Those dynamics allowed for lower temperatures and a more stable vortex than usual over the Arctic, which then triggered the formation of polar stratospheric(平流层的) clouds and the catalytic(催化的) destruction of ozone.” The hole is not related to the Covid-19 shutdowns that have dramatically cut air pollution and reduced greenhouse gas emissions. It is also too early to say whether the unusually stable Arctic polar vortex conditions are linked with the climate crisis, or part of normal stratospheric weather variability. Peuch said there were no direct implications for the climate crisis. Temperatures in the region are already increasing, slowing the depletion of ozone, and the hole will start to recover as polar air mixes with ozone-rich air from lower latitudes. The last time similar conditions were observed was in spring 2011. While a hole over the Arctic is a rare event, the much larger hole in the ozone layer over the Antarctic has been a major cause for concern for more than four decades. The production of ozone-depleting chemicals has been dramatically reduced, under the 1987 Montreal Protocol(蒙特利尔协议), but some sources appear still to be functioning--in 2018, unauthorized emissions were detected from some areas . New sources of ozone-depleting chemicals were not a factor in the hole observed in the Arctic, said Peuch. “However, this is a reminder that one should not take the Montreal Protocol measures for granted, and that observations from the ground and from satellites are central to avoid a situation where the ozone-destroying chemical level in the stratosphere could increase again.” What is the possible meaning of the underlined word “depletion”? A. replacement B. consumption C. increase D. production According to the passage, scientists are concerned about the hole because ______. A. it is expected to be a threat to the mankind B. the new hole is caused by air pollution and greenhouse gas emissions C. it may encourage further scientific research and environmental awareness D. it warns us of an oncoming climate crisis What can be learned from the last two paragraphs? A. The hole over the Arctic shares the same causes as the one over the Antarctic. B. Human activities are highly responsible for producing ozone-destroying chemicals. C. The Montreal Protocolhas successfully prevented new emissions. D. Some new illegal emissions are to blame for the hole over the Arctic. The best title for the passage is probably ______. A. Record-size Hole Opens in Ozone Layer above the Arctic B. Actions Urgently Neededfora New Hole in Ozone Layer C. Environmental Disaster and International Cooperation D. How a Hole in Ozone Affects our Life on Earth Section C Directions: Read the following passage. Fill in each blank with a proper sentence given in the box. Each sentence can be used only once. Note that there are two more sentences than you need. A. Taking selfies is definitely one experience that many people like doing and sharing with the online world. B. People who post group selfies also show a need for popularity and a need to belong to a group. C. Narcissists are people who think very highly of themselves, especially how they look. D. That was the old way of “clicking like”. E. The drive to take selfies can nevertheless do some good to society as a whole. F. But men who post selfies showed more of a need to be seen as popular than women did. People like to post their selfies(自拍照) on social media. To know more about it, scientists at Syracuse University in New York recently did a research and came up with some surprising findings. People who?post?selfies and use?editing software?to make themselves look better show behaviors connected to narcissism, the researchers said. (67) _______ Makana Chock, a professor from Syracuse University, said because social media is mostly used by people to share unimportant information about their lives, it is a good place for people to “work towards satisfying their own?vanity.” Those “likes” under their Facebook selfies make them feel good. (68) ________ Some people feel “peer pressure” to post selfies and some follow the popular belief that if there is no picture of an event or experience, it did not really happen. “Anyway, it shouldn’t be seen as negative. People get sense of satisfaction especially when they get likes. And it does no harm,” Chock said. Other findings from the study include: There are no major differences on how often men and women post selfies and how often they use editing software. (69) ________ Chock said posting selfies on social media is not all that different from what people have done for many years. On trips and special events, our parents and grandparents used cameras instead of phones to take photos. They would bring back photos to show friends and family. You had no choice but to look at them. You probably commented about how nice everyone in the photos looked, especially children and the person showing the photos. They were happy to hear your comments. (70) _______ On social media, however, people can decide not to look at photos --even if they click “like”. IV. Summary Writing Directions: Read the following passage. Summarize the main idea and the main point(s) of the passage in no more than 60 words. Use your own words as far as possible. It’s natural to feel the need to control something when everything around you feels out of control, and you?feel?helpless.When a friend of mine first heard about the coronavirus outbreak, she got down on her hands and knees and cleaned her kitchen floor. She told me,“My floor wasn’t even dirty, but doing something constructive made me feel in control and that I was holding on to my power, despite the desperatecircumstances.” Your most powerful weapon against uncertainty is your perspective because nobody and no situation can take that from you unless you give it away. Your perspective can victimize or empower you. When you look for the upside in a downside situation and figure out what you can control and what you can't, it’s easier to accept whatever is beyond your control. Small gestures during hard times gentle worry and concern. Often during emergencies and crises, people start performing acts of kindness at random. Helping others through a crisis by performing good deeds can make you feel in control. The obvious benefit when you reach out to help someone else is that you get a break from your own worries for a while. Contributing, giving, volunteering, donating and performing kind acts, no matter how small or brief, connect you to other people (and animals) in a deeply meaningful, humane way. So practice doing small gestures for others and yourself. Positive action is supposed to be taken to ensure you a sense of control.Make “cans”out of “cannots”and focus on what you can control.Take advantage of this restrictive time to clear clutter out of your basement, pull weeds in the garden, organize drawers, closets, and bookshelves, or get caught up on fun hobbies you've neglected for a while. Focus on a thought, person, pet, or object that stir hope and positivity within you. Hope always exists alongside of despair. V. Translation Directions: Translate the following sentences into English, using the words given in the brackets. 我们从来没有像现在这么渴望去学校上课!(Never) 既然只能宅在家里,何不做点自己喜欢做但平时又没时间做的事情呢?(Why not) 在欧洲许多作为理想社交场所的咖啡店不得不关门谢客来应对这场公共卫生危机。(serve) 事实证明当我们的国家在面临困难时,每个中国人, 不管在国内还是国外,都愿意为自己的祖国做 出贡献。(It) VI. Guided Writing Directions:Write an English composition in 120-150 words according to the instructions given below in Chinese. 请简要描述图片内容,并结合生活或学习中的例子谈谈你对该图的理解。 2019学年奉贤区学科教学质量调研高三英语听力 Listening Comprehension Section A Directions: In Section A, you will hear ten short conversations between two speakers. At the end of each conversation, a question will be asked about what was said. The conversations and the questions will be spoken only once. After you hear a conversation and the question about it, read the four possible answers on your paper, and decide which one is the best answer to the question you have heard. M: Good morning! Can I help you ? W:Yes! The dress is too long. Would you please shorten that for me ? Q: Where does this conversation probably take place? W: I’ll take the room. How much is the rent? M: Well, it’s 200 pounds each month. You need to pay 3 months rents in advance. Plus deposit of 100 pounds. Q: How much should the women pay in total? M: I’m so sick of calling the ticket office. The line is always busy. W: Why don’t you order through the Internet? Q: What does the women suggest the man do? W: Tom, do you have any idea where Sally is? M: Yes, I saw her in the business office. She was applying for a student loan. Q: what was Sally doing? M: I couldn’t sleep at all last night. The bed is not comfortable. W: Don’t blame the bed. You should stop drinking wine. Q: What does the woman imply? M: Just look at today's paper. Nothing but accidents or gossip. W: Right. Nothing is worth reading. Q: What is the speaker's attitude towards today's paper? M: Professor Smith explained the maths problem clearly. W: Did he? Unfortunately, it is still all Greek to me. Q: What can we learn from the conversation? M:?Are?you?sure?you've?corrected?all?the?typing?errors?in?this?paper? W:?Perhaps?I'd?better?read?it?through?again. Q:?What's?the?woman?going?to?do? M: The biological project is now in trouble. You know my colleague and I have completely different ideas about how to proceed. W: Why don’t you talk about it? Try to make it a win-win situation for you both. Q: What does the woman suggest the man do? M:?How?did?Mr.?Graves?projects?turn?out??I?heard?he had?trouble?with?the?financing?and?he?then?couldn’t get?the?land?he?wanted. W:?It’s?true!?He?did?have?difficulties?but?all?in?all?it couldn’t?have?turned?out?better. Q: What did you learn about Mr. Graves? Section B Directions: In Section B, you will hear several longer conversation(s) and short passage(s), and you will be asked several questions on each of the conversation(s) and the passage(s). The conversation(s) and the passage(s) will be read twice, but the questions will be spoken only once. When you hear a question, read the four possible answers on your paper and decide which one would be the best answer to the question you have heard. Questions 11 through 13 are based on the following talk. Play is the principal business of children, and in recent years more and more research have shown the great importance of play in the development of a human being. From earliest infancy, every child needs an opportunity and the right materials for play, and the main tools of play are toys. Their main fun_ction is to suggest, encourage and assist play. Therefore, it is important to choose suitable toys for different stages of a child’s development. Some research in recent years on infant development has shown the standard a child is likely to reach is largely determined in the first three years of his life. So a baby’s ability to profit from the right play materials should not be underestimated. A baby who is encouraged and stimulated, talked to and shown things and played with, has the best chance of growing up successfully. The next stage, from three to five years old, curiosity knows no bounds. Every type of suitable toy should be made available to the child, for trying out, experimenting and learning, for discovering his own particular ability. By the third stage of play development-- from five to seven or eight years the child is at school. But for a few more years play is still the best way of learning, at home or at school. It is easier now to see which type of toys the child most enjoys. Now listen again, please. 11. What is the main fun_ction of toys? 12. Why is it said the first three years of one's life is important? 13. What does the passage mainly discuss? Questions 14 through 16 are based on the following passage. In 2014, one in sixteen Americans visited the hospital emergency room for home injuries. One of the main causes of these accidents? A wandering mind! ?By one estimate, people daydream through nearly half of their waking hours. Psychologists have recently focused on the tendency to think about something other than the task one is doing. For one experiment, researchers developed an app to analyze the relationship between daydreaming and happiness. They found that the average person’s mind wandered most frequently about 65% of the time during personal activities, such as brushing their teeth and combing their hair. Respondents’ minds tended to wander more when they felt upset rather than happy. They were more likely to wander toward pleasant topics than unpleasant ones. How do daydreams affect daydreamers? A wandering mind leaves us vulnerable when driving. In one study, researchers interviewed 955 people involved in traffic accidents, the majority of them reported having daydream just before the accident. Yet other research suggests that daydreaming has benefits. Researchers have found that it gives us a chance to think about our goals and it also seems to increase creativity. In one experiment, 145 undergraduates completed four “unusual uses” tasks, each requiring them to list as many uses as possible for an everyday object. After the first pair of tasks was completed, one group of participants was assigned an undemanding activity intended to cause their minds to wander. When all the participants proceeded to the second pair of tasks, the daydreamers performed 40% better than the others. Now listen again, please. What does the passage say about people’s mind? For what purpose did the researchers develop the new app? What was the finding of the experiment with 145 undergraduates? Questions 17 through 20 are based on the following conversation. W:?Hi,?Professor?Smith.?I?hear?you've?written?a?book?titled?Visions.? M:?Yes.?It?explains?how?science?will?revolutionize?in?the?future.? W:?Could?I?ask?you?some?questions?concerning?the?book? M:?Sure.? W:?Are?you?optimistic?about?the?future? M:?Generally,?yeah.?If?we?go?back?to?the?year?of?1900,?most?Americans?didn't?live?beyond?the?age?of?50. Since?then,?we've?had?improvements?in?health?care?and?technology. W:?Are?we?ready?for?the?changes?that?will?come? M:?Changes?are?already?happening.?The?future?is?here?now.?We?have?DNA,?microchips?and?the Internet. Some?people's?reaction?is?to?say, “We?are?too?old;?we?don’t?understand?new?technology.” My?reaction?is?to?say, “We?must?educate?people?to?use?new?technology?now.” W:?Is?world?population?going?to?be?a?big?problem? M:?Yes,?and?no. I?think?that?world?population?will?stop?increasing?as?we?all?get?richer.?If?you?are?a?part?of?the? middle?class,?you?don’t?want?or?need?12?children. W:?Will?there?be?a?world?government? M:?Very?probably.?We?will?have?to?manage?the?world?and?its?resources?on?a?global?level?because?countries? alone?are?too?small. W:?Will?we?have?control?of?everything? M:?I?think?we'll?learn?to?control?the?weather,?volcanoes?and?earthquakes.?Illness?won’t?exist.?We'll?grow?new? livers, kidneys,?hearts,?and?lungs?like?spare?parts?of?a?car.?People?will?live?to?about?130?or?150.For?2?000?years, we?have?tried?to?understand?our?environment.?Now?we'll begin?to?control?it.? Now listen again, please. 17.?What?does?Professor?Smith?say?about?most?Americans?around?the?year?of?1900? 18.?What?does?Professor?Smith?advise?we?do?? 19.?When?will?the?world?population?stop?growing?according?to?Professor?Smith?? 20.?What?does?Professor?Smith?think?human?beings?will?be?able?to?do?? 奉贤区高三英语调研测试 (试卷参考答案) I. Listening Comprehension Section A 1-5 BDBCB 6-10 CBCCD Section B 11-13 AAC 14-16 BAD 17-20 ACDC II. Grammar and Vocabulary Section A forced 22. which 23. growing 24. thought 25. To test an 27. while 28. Although/While/Though 29. that 30. could/can Section B 31-40 IBACG FDEKJ III. Reading Comprehension Section A 41-55 CDABC BADBA BDADA Section B 56-59 DBBA 60-62 CDA 63-66 BCBA Section C 67-70 CBFD IV. Summary Writing For reference: Strengthening or retrieving a sense of control is a natural demand. First, good perspective is of the greatest help, for evaluating the situation properly brings a clearer picture. Second, kind behaviors during tough times can secure you a sense of control as well. Third, actions and thoughts of positivity also help as they may create hope and optimism. It’s essential to feel you can control something in a crisis or emergency. Positive perspective is the most important, since it will ensure you confidence and power to pull through the difficult situation. Then doing small good deeds can free you from worry temporarily by helping others. Lastly, take some positive action to arouse the hope within you. V. Translation 72.Never before have we been so eager /keen to go to school as we are now. 73. Why not do something you love but don't have time to do since you can only stay at home? 74. In Europe many coffee houses which serve as ideal places for social interaction have to close their stores to respond to the public health crisis. 75. It turns out that when our country is facing difficulties, every Chinese, whether athome or abroad, is willing to make contributions to their motherland. ( 1 )

    • 2020-05-13
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  • ID:6-7306351 上海市浦东新区2020年初三下学期物理二模试卷(扫描版含答案)

    初中物理/期中专区/九年级下册

    实验(共18分) 请根据要求在答纸的相应位置作害。 23.如图10所示的实验仪器称为(),此时它的示数为(2)什。在“探究杠杆 的条件¨实验中,在搜集证据前,应调节杠杆两端的平衡螺母,使杠杆在(3)位置保 衡:本实验中,弹簧测力计对杠杆施加力的方向必须(4) uuu 0102030405060708090cn 图10 图11 24.在“探究平面镜成像的特点”实验中,为了便于确定(5),采用玻璃板作为平面镜 讨需要多次改变点燃蜡烛的位置重复进行实验,是为了(6)(选填字母A“得到普遍规 父B“求平均值减小误差”)。如图11所示是“探究凸透镜成像的规律”的实验装置,实验时为 证光源的像成在光屏中央,要使凸透镜和光屏的中心跟烛焰的中心大致在(7);若 镜焦距为10厘米,将光源置于光具座上45厘米刻度处时,通过移动光屏,(8)(选 虍”或不能”)在光屏上得到像 25.某同学在“测定小灯泡的电功率”实验中,所用电源(为2伏的整数倍)保持不变,小灯 “2.2V字样。他连接好电路,移动滑片使变阻器的阻值最大。闭合开关,观察到两电表示 图12(a)、(b)所示,此时电压表的示数为(9)伏;然后移动滑动变阻器的滑片使小灯 发光,发现电压表指针从图12位置变化的角度恰好是电流表指针变化角度的2倍。根据 信息可判断:实验所用滑动变阻器的最大阻值为(10)欧,当他观察到电压表的示数 _(1)‘伏时小灯正常发光,小灯的额定功率为_(12)瓦 mimmmitmutrmititmtn 山m山t 02A04 0.63 图12 教有发展研究院保留版权 第5页(共6页) 26.小娟同学发现储水容器在单位时间内的出水量不同。她认为水管中单位时间的出水量 可能跟水管两端液体的压强差Ap、横截面积S和长度L有关。为此,她设计了如图13所示的 装置进行研究,容器底部的水平管AB可以方便更换,B处的开关用于控制出水时间,并把相 关实验数据记录在下表中。 实验水管的截水管的长容器内水的单位时间的出 不人-式器 序号面积S度L/厘米深度h厘米水量Q毫升 20 20 、、 60 开 SSSsS 30 20 40 40 20 30 B 图i3 20 30 20 40 120 6 2S0 20 20 240 3 20 20 540 ①打开开关后,容器中水的深度h大小可以反映水管AB两端(13)的大小;为了使 水管AB两端水的压强差尽量保持恒定,盛水容器的面积应该(14)(选填“大”或“小”) ②分析比较实验序号1与6与7数据中Q与S变化的关系及相关条件,可初步得出的结 !论是: (15 ③根据实验序号(16数据中Q与h变化的关系及相关条件,可初步得出的 结论是:在L和S相同的情况下,Δ越大,Q越大。 ④若h=20厘米、L=25厘米、S=S0,则Q=(17毫升;若h=10厘米、L=60厘米 S=4S0,则Q=_(18)毫升。 浦东教育发展研究院保留版权 第6页(共6页)

    • 2020-05-13
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  • ID:3-7295542 上海市金山区2020届初三年级第二学期数学二模试卷(PDF,含简略答案)

    初中数学/中考专区/模拟试题

    第 1 页 金山区 2019 学年第二学期九年级质量监控考试 数 学 试 卷 (考试时间 100 分钟,满分 150 分) 考生注意: 1.本试卷含三个大题,共 25 题. 2.答题时,考生务必按答题要求在答题纸规定的位置上作答,在草稿纸、本试卷上答 题一律无效. 3.除第一、二大题外,其余各题如无特别说明,都必须在答题纸的相应位置上写出证 明或计算的主要 步骤. 一、选择题:(本大题共 6 题,每题 4 分,满分 24 分) 【下列各题的四个选项中,有且只有一个选项是正确的,请选择正确选项的代号并填涂在答题纸的相应位 置上】 1.在下列各数中,无理数是( ) (A) 20 7 ; (B) 3 ? ; (C) 4 ; (D)0.101001. 2. 计算 ( ) 2 3a 的结果是( ) (A)a; (B) 5a ; (C) 6a ; (D) 9a . 3.一次函数 2 3y x= ? 的图像在 y 轴的截距是( ) (A)2; (B)-2; (C)3; (D)-3. 4.某区对创建全国文明城区的满意程度进行随机调查,结果如图所示,据此可估计全区 75 万居民对创 建全国文明城区工作不满意的居民人数为( ) (A)1.2 万; (B)1.5 万; (C)7.5 万; (D)66 万. 5.已知在△ABC中,AD是中线,设 ,AB m AD n= = ,那么向量BC 用向量 ,m n 表示为( ) (A) 2 2m n? ; (B) 2 2m n+ ; (C) 2 2n m? ; (D) n m? . 6.如图,∠MON=30°,p是∠MON的角平分线,PQ 平分 ON 交 OM于点 Q,以 P 为圆心半径为 4 的圆 ON相切,如果以 Q为圆心半径为 R的圆与 P? 相交,那么 r的取值范围是( ) (A)44. (第 6 题图) N M Q P O (第 4 题图) 第 2 页 二、填空题:(本大题共 12 题,每题 4 分,满分 48 分) 7.分解因式: 2 4a ? =__________ 8.某种冠状病毒的直径大约是 0.00011 毫米,数据 0.00011 用科学计数法表示为_________ 9.方程 2 x x? = 的解是_________ 10.如果关于 x的方程 2 2 0x mx? + = 有两个相等的实数根,那么 m的值是_______ 11.函数 1 3 y x = ? 的定义域是_________ 12.从 1,2,3,4,5,6,7,8,9,10 这十个数字中任意选取一个数字。取到的数字是 3 的倍数的概率是 _______ 13.某学校九年级共有 350 名学生,在一次九年级全体学生参加的数学测试中,随机抽取 50 名学生的测试 成绩进行抽样调查,绘制频率分布直方图如图所示,如果成绩不低于 80 分算优良,那么估计九年级全体 学生在这次测试中成绩优良学生人数约是______ 14.上海市居民用户燃气收费标准如下表: 某居民用户用气量在第一档,那么该用户每年燃气费 y(元)与年用气量 x(立方米)的函数关系式是 ______________ 15.四边形 ABCD中,对角线 AC、BD相互垂直,AC=4,BD=6,顺次联结这个四边形中点所得的四边形的 面积等于________ 16.我们把正多边形的一个内角与外角的比值叫做正多边形的内外比,内外比为 3 的正多边形的边数为 __________ 17.如图,在坡度为 1:2.4 的斜坡上有一棵与水平面垂直的树 BC,在斜坡底部 A 处测得树顶 C 的仰角为 30°,AB的长为 65 米,那么树高 BC等于________米(保留根号) 18.如图,在 ABC? 中,∠C=90°,AC=3,BC=4,把 ABC? 绕 C点旋转得到 A B C? ? ?? , 其中点 A?在线段 AB上,那么 A B B? ?? 的正切值等于_________ (第 13 题图) C B A (第 17 题图) (第 18 题图) 第 3 页 三、解答题:(本大题共 7 题,满分 78 分) 19.(本题满分 10 分) 计算: 1 3 -1 112+( 3 1) +cos30 8 ? ? ? ? ? ? ? ? . 20.(本题满分 10 分) 解方程组: 2 2 2 ; 1. x y x xy y ? =? ? ? ? =? 21.(本题满分 10 分,其中每小题各 5 分) 在平面直角坐标系 xOy 中(如图),已知函数 2y x= 的图像和反比例函数的在第一象限交于 A 点,其中点 A的横坐标是 1. (1)求反比例函数的解析式; (2)把直线 2y x= 平移后与 y 轴相交于点 B,且 AB OB= ,求平移后直线的解析式. 22.(本题满分 10 分,其中第(1)(2)小题各 5 分) 如图,已知在四边形 ABCD 中∠A=∠ABC=90°,点 E 是 CD 的中点,△ABD 与 △EBD 关于直线 BD 对 称, 1AD = , 3AB = . (1)求点 A和点 E之间的距离; (2)联结 AC交 BE于点 F,求 AF AC 的值. O x y –5 –4 –3 –2 –1 1 2 3 4 5 6 –5 –4 –3 –2 –1 1 2 3 4 5 6 (第 21 题图) E D CB A (第 22 题图) 第 4 页 23.(本题满分 12 分,其中第(1)小题 5 分,第(2)小题 7 分) 如图,已知 C是线段 AB上的一点,分别以 AC、BC为边在线段 AB同侧作正方形 ACDE和正方形 CBGF, 点 F在 CD上,联结 AF、BD,BD与 FG交于点M,点 N是边 AC上的一点,联结 EN交 AF 与点 H. (1)求证:AF=BD; (2)如果 AN GM AC GF = ,求证: AF EN⊥ . 24.(本题满分 12 分,其中第(1)小题 4 分,第(2)小题 4 分,第(3)小题 4 分) 在平面直角坐标系 xOy中(如图),已知抛物线 2y x bx c= ? + + 经过点 A(3,0)和 ( )B 0,3 ,其顶点为 C. (1)求抛物线的解析式和顶点 C的坐标; (2)我们把坐标为(n,m)的点叫做坐标为(m,n)的点的反射点,已知点M在这条抛物线上,它的反 射点在抛物线的对称轴上,求点 M的坐标; (3)点 P是抛物线在第一象限部分上的一点,如果∠POA=∠ACB,求点 P的坐标. (第 23 题图) N F E H M G D C B A O x y –5 –4 –3 –2 –1 1 2 3 4 5 6 –5 –4 –3 –2 –1 1 2 3 4 5 6 (第 24 题图) 第 5 页 25.(本题满分 14 分,其中第(1)小题 4 分,第(2)小题 4 分,第(3)小题 6 分) 如图,在△ABC中,∠C=90°,AC=6,BC=8,P是线段 BC上任意一点,以点 P为圆心 PB为半径的圆与 线段 AB相交于点 Q(点 Q与点 A、B不重合),∠CPQ的角平分线与 AC相交于点 D. (1)如果 DQ=PB,求证:四边形 BQDP是平行四边形; (2)设 PB=x,△DPQ的面积为 y,求 y关于 x的函数关系式,并写出 x的取值范围; (3)如果△ADQ是以 DQ为腰的等腰三角形,求 PB的长. C B A P QD C B A (第 25 题图) 第 6 页 参考答案 一、选择题:(本大题共 6 题,每题 4 分,满分 24 分) 1.B ;2.C ;3.D;4.B;5.C;6.A. 二、填空题:(本大题共 12 题,每题 4 分,满分 48 分) 7. ( )( )2 2a a+ ? ; 8. -41.1 10? ; 9. 1x = ; 10. 2 2? ; 11. 3x ? ; 12. 3 10 ; 13.154; 14. 3 (0 310)y x x= ? ? ; 15. 6 ; 16.8; 16. 20 3-25 ; 18. 7 24 . 三、解答题:(本大题共 7 题,满分 78 分) 19. 3 3 20. 1 2 1 2 5 1 , 3 1 x x y y = =? ? ? ? = = ?? ? 21. (1)A(1,2), 2 y x = (2) 5 2 4 y x= + 22.(1) AE= 3 (2) 3 5 AF AC = 23. 略 24. (1)C(1,4) (2)(1+ 3,1 ),(1 3,1? )(3) 1 13 3 3 13 , 2 2 p ? ?? + ? + ? ?? ? ? ? 25.(1) 略(2) 2 3 25 3 (0 ) 8 4 y x x x= ? + ? ? (3)4 或 400 89

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  • ID:6-7290678 上海市徐汇区2019-2020学年初三下学期物理线下复学双基诊断试卷及答案(PDF)

    初中物理/月考专区/九年级下册

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  • ID:4-7289074 上海市崇明区2020届高三下学期英语二模考试卷(PDF版 含答案无音频)

    高中英语/高考专区/模拟试题

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  • ID:6-7282948 上海市闵行区2020届初三下学期物理二模考试卷及答案(PDF)

    初中物理/沪教版/九年级下册/本册综合

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  • ID:3-7265838 上海市上海中学2020届高三下学期数学周练10及答案(PDF)

    高中数学/高考专区/二轮专题

    2020届上中高三下5月份周测试卷10 填空题: 2、已“+复款则的部为一 2、若=(3,-4则与a=(,-4)共线的单位向里为 3、设x2+y2=1则x+y的最小值为 5、若点M(cos5r sin-)在角的终边上,则tana= 的图像向左平移一个单位后得到y=x)的图像,再将y=八x)的图像 绕原点旅转180°后仍与y=x)的图像重合,则a= 7、已知数m){2-1 x≤0 1(x-1)+1x>0 则方程八x)=x在区间010)内所有实根的和为 8、20个不加区别的小球放入编号为1,2,3的三个盒子里,要求每个盒子内的球数不小于它的 编号数,则不同的放法种数为 9、已知数列{14满足:a=√2-1,b-2,则的前项和S1= aa 10、若对任意实数x,都有x0=a+a(x+2)+a2(x+2)2+…+a0(x+2),则a= 11在△ABC中,角A、B、C所对边为a、b、c,已知sinA+sin(B-C)=2sin2C ab- cosc=3,则△ABC面积的最大值为 12.设(x,n1)(x2y2(x2,2)是平面曲线x2+y2=2x-4y上任意三 则A=-x+x2-x的最小值为 二、选择题 1+2(为数》的倾斜角等于( C arctan D arctan 1日知>0b>0,若脚-b=5则Q+b的值不可能是() 10 15、已知数刚的的足=,11=a--(n=12,3)则a所有 可能的值构成的集合为( B.[±2,=1 C.[x,=2,] D.[,±1,±2] 16、若点N为点M在平面a上的正投影,则记N=f2(M如图,在棱长为1的正方体 ABCD-4BCD中,记平面ABCD为B,平面ABCD为y,点P是棱CC1上一动点(与 CC1不重合),Q=L(PQ=J[(P]给出下列三个结论 ①续段PQ2长度的取值范围是] ②存在点P使得PQ平面; ③存在点P使得PQ⊥PQ 其中,所有正确结论的序号是() B②⑥ 三、解答题 17、如图在平面直角坐标系xO中,A为单位园与x轴正半轴的交点,P为单位圆上一点,且 ∠AOP=a,将点P沿单位圆按逆时针方向旋转角后到点Qab),其中B∈,21 (1)若点P的坐标为G3,B=时,求ab的值 (2)a=,求b2-a的职值范国 18、如图所示,直三棱柱ABC-41BC1中,A4=AB=AC=1,E、F分别是CC1、BC的中 点,AE⊥4B1,D为棱4B上的点 (1)证明:DF⊥AE (2)是否存在一点D,使得平面DFF与平面ABC所成锐二 面角的余弦值为?若存在,说明点D的位置,若不存在, 说明理由 19、中国高铁的快速发展给群众出行带来了巨大便利,极大促进了区域经济社会发展,已知某条 高铁线路通车后,发车时间间隔t(单位:分钟)满足5≤r≤25.r∈N,经测算,高铁的载 客里与发车时间间隔r相关当20≤t≤25时高铁为满载状态,载客里为1000人,当5≤t20时 载客里会在满载基础上臧少,减少的人数与(20-1)成正比,且发车时间为5分钟的载客里 为100人,记发车间隔时间为t分钟时,高铁载客量为P (1)求Pt的表达式 (2)若该线路发车时间间隔t分钟时的净收入Q()=P()-40r+6501-2000元),当发 车时间间隔鬲为多少时,单位时间的净收益最大

    • 2020-05-06
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  • ID:3-7265697 上海市进才中学2019-2020学年高三下学期数学周练8及答案(PDF)

    高中数学/高考专区/二轮专题

    上海市进才中学2019学年第二学期高三数学周练八 命题教师、审题教师 2020040915:15-17:15 、填空题(本题满分54分,共有14题,1-6每小题4分,7~12每小题5分) 1,已知全集U={1,2,3,4,5,6,A={2,4},B={4,6},则A∩CB= 若C 3.在复数范围内分解因式:2x2-4x+4= 4.已知函数f(x)=log 1-mx 是奇函数,则实数 5.若x,y满足{x-y+1≥0,则二=2x-y的取值范围是 6.圆锥的底面半径为√,母线长为2,经过其任意两条母线的截面面积的最大值为 7.若2+i(i是虚数单位)是关于x的实系数方程x2+mx+n=0的一个根,则圆锥曲线 x+2=1的焦点坐标是 8.数列{a}满足:04’a25’且a2+a4+…+aan=ma,对任何的正整数n 都成立,则数列{}的前100项的和为 9在直三棱柱ABC一ABC中,底面ABC为直角三角形,∠BAC=,AB=AC=A1=1 已知G与E分别为AB和CC门1的中点,D与F分别为线段AC和AB上的动点(不包括端点) 若GD⊥EF,则线段DF的长度的最小值为 10.函数f(x)=x-=,x∈[l,2],g(x)=acos-+5-2a(a>0),对任意的x∈[,2], x 总存在x∈[0,1],使得g(x2)=f(x1)成立,则a的取值范围为 1l.已知直线ax+by-1=0(a,b不全为0)与圆x2+y2=50有公共点,且公共点的横、 纵坐标均为整数,则这样的直线共有 条 12.点P为直角坐标平面上圆O:x2+y2=4上的任意一点,以O为原点、Om对应“斜二 测”画法的x轴,点P按此“斜二测”画法在水平放置的平面上对应点为Q,则点Q在圆O 所在的直角坐标系上的轨迹方程是 二、选择题(本题满分20分,共有4题,每小题5分) 13.关于x,y的方程组 mx+y=-l Ix+my=2m+3 的系数行列式D=0是该方程组有解的() (A)充分非必要条件 (B)必要非充分条件 (C)充分且必要条件 (D)既非充分也非必要条件 14.当n>1时,关于下列结论的判断正确的是 ①不等式n2+1>n2+n恒成立,②不等式√+1-<-√m-1恒成立 (A)①、②都正确 (B)①正确,②错误 (C)①错误,②正确 (D)①、②都错误 15.某工厂今年年初贷款a万元,年利率为r(按复利计算),从今年末起,每年年末偿还 固定数量金额,5年恰好还清,则每年应还金额(单位:万元)为 (1+r)5a (B)(+rar (1+r)a (1+r)5+1

    • 2020-05-06
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