江西省南昌二中2014届高三第十一次模拟考试英语试题
第Ⅰ卷 (共115分)
第一部分听力（共两节, 满分30分）
第一节（共 5 小题；每小题 1.5 分，满分 7.5 分）
听下面 5 段对话。每段对话后有一个小题，从题中所给的 A、B、C 三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有 10 秒钟的时间回答有关小题和阅读下一小题。每段对话仅读一遍。
1. Where does the woman want to go?
A. Rainbow Street.
B. The bus station.
C. The Business Center.
2. What does the man mean in the end?
A. He will buy a house in London.
B. James can’t afford the house in London.
C. James will get a job in the bank.
3. Why does the man speak so loudly?
A. The TV is on.
B. Too many people are talking.
C. The woman stands far away.
4. What does the man mean?
A. He didn’t get the book he needed.
B. He had no idea where the book was.
C. The library is closed on weekends.
5. How does the woman sound?
A. Excited.
B. Relaxed.
C. Worried.
第二节（共 15 小题；每小题 1.5 分，满分 22.5 分）
听下面 5 段对话或独白。每段对话或独白后有几个小题，从题中所给的 A、B、C 三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有时间阅读各个小题，每小题5 秒钟；听完后，各小题将给出 5 秒钟的作答时间。每段对话或独白读两遍。
听第 6 段材料，回答第 6、7 题。
6. What is the man’s computer mainly for?
A. Writing papers.
B. Surfing the Internet.
C. Playing online games.
7. What do the speakers think people should do more?
A. Learn new things.
B. Read more books.
C. Communicate with each other.
听第7段材料，回答第8、9题。
8. What are the speakers trying to do?
A. Stop a vehicle.
B. Ask someone for directions.
C. Prepare everything for their trip.
9. What does the man think of the trip?
A. It’s totally boring.
B. They should have got fully prepared.
C. It’s a lot of fun.
听第8段材料，回答第10至13题。
10. Where are the speakers?
A. In Helsinki.
B. In London.
C. In Shanghai.
11. How long will the woman’s stopover be?
A. Five hours.
B. Six hours.
C. Nine hours.
12. What will the woman do at the airport?
A. Buy some batteries.
B. Do some reading.
C. Eat some local food.
13. What does the man say about Moscow?
A. He met a poor student there.
B. He didn’t spend any money there.
C. He wandered around the city for hours.
听第9段材料，回答第14至16题。
14. Why was the man upset last week?
A. He was fired.
B. The woman lied to him.
C. He was asked to work overtime.
15. What does the man say about Mr. Ainsworth?
A. He is a fair manager.
B. He always misses his work.
C. He always listens to Tammy.
16. What does the woman suggest the man do?
A. Explain to Tammy.
B. Look for another job.
C. Talk to Mr. Ainsworth again.
听第10段材料，回答第17至20题。
17. In what way was the bear dangerous?
A. It had killed several people.
B. It was following people during the day.
C. It often attacked farm animals.
18. How many people carried out the robbery in Brussels?
A. Two.
B. Three.
C. Eight.
19. What is true about the robbers?
A. They shot fifty people.
B. They stole some diamonds.
C. They knew an official at the airport.
20. What will happen to the snakes on the island of Guam?
A. They will be poisoned to death.
B. They will be killed by power lines.
C. They will be used for scientific tests.
第二部分英语知识运用（共两节,满分45分）
第一节语法和词汇知识（共15小题；每小题1分,满分15分）
21. Injured in ____ hand, the man found it difficult to hold the box in ____ place.
A. the, /
B. the, the
C. / , /
D. his, the
22. After a 5-minute discussion, we came up with a better ____ to the math problem.
A. access
B. way
C. approach
D. aspect
23. As for the plan some agree while others don’t. I’m one of _____ opposed to it.
A. whom
B. those
C. those who
D. who is
24. —How much is _____ for a schoolbag?
— Experts say students should carry _____ more than 10% of their body weight．
A. too much; 不填
B. much too; no
C. too many; 不填
D. too much; not
25. It was _____ impossible for anyone to get admitted without the password.
A. quite
B. pretty
C. rather
D. fairly
26. I’m always delighted receiving your email. _____ the meeting I’ll be glad to attend it.
A. In spite of
B. With regard to
C. In return for
D. On behalf of
27. Suddenly she realized that money alone couldn’t ____ what he had suffered.
A. give in to
B. run out of
C. come up to
D. make up for
28. He has a great interest in golf. As a result he _____ it twice a week in the past year.
A. plays
B. played
C. had played
D. has been playing
29. Having been attacked by terrorists, ______________.
A. doctors came to our rescue
B. the building eventually fell in
C. relief aid kept pouring in
D. warnings quickly got round
30．_____ is the power of TV that it can make a person famous overnight.
A. It
B. So
C. Such
D. What
31. —It’s hard to believe that Jack _____ have fought with the policeman.
—Yes. If one _____ ask for trouble, it can’t be helped.
A. would; will
B. must; may
C. should; must
D. need; dare
32. Go out for a walk? I’m afraid not, _____ our work is being done．
A. as
B. before
C. until
D. unless
33. ________ to anything but his studies apparently will get him nowhere.
A. Devoting
B. Being devoted
C. Devote
D. Devoted
34. He didn’t phone me then. Actually it was a fortnight ____ he gave me a second call.
A. that
B. before
C. when
D. since
35. —Sorry Linda didn’t invite you to her party. —_____? I don’t care.
A. For what
B. What’s up
C. How come
D. So what
第二节：完形填空（共20小题，每小题1.5分，满分30分）
阅读短文,从短文后各题所给的四个选项（ABCD)中，选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
“You are supposed to borrow only two books for one visit,” said the librarian as she handed over a library card impatiently. Neither the 36 nor her attitude surprised me, a poor 8yearold Jewish girl growing up in Berlin in the late 1950s.I needed those visits. My only 37 was those books filled with many stories in which, however terrible things seemed and whatever happened, everything 38 well in the end, 39 justice, kindness, and wisdom -- a striking contrast(对比)to my daily experiences.
Twenty five years later, I, a recent immigrant to the US with a daughter aged 12, stood in front of another librarian. This librarian was 40. “What did she say?” I asked my daughter, who already knew a little English and o ften 41 as my interpreter. “She said, ‘Can I help you？’”
“Ask if they have any books in 42,”I requested.
“No, they don’t.” translated my daughter.
While hunting for a job, I was told that the library needed people to 43 books. The interview was short－the job didn’t require much English, just a knowledge of
the alphabet(字母表). I started the next day. Every day, I 44 hundreds of books whose meaning was hidden from me, mentally dividing them 45 size and color. One day, while shelving, I came across English for Beginners and began studying it on my own. 46 English letters started forming words that I could 47, words combined into phrases, and oh my dear! I was reading. It was a slow 48 , supported by dictionaries and accompanied by tears, but it was doing a wonder. Afterwards I got promoted to the front desk－49 books in and out and answering simple questions. Every day I receive dozens of people. 50 I spot new immigrants. They come from all over the world. Although they look different, the hesitant expression on their faces and their shy manners are 51 . My heart goes all out to them, 52 they are people like me. I fully understand the 53 roads on which they have stepped. “They’ve come to the right place,” I think to 54 .Then I smile and say—just the 55 a librarian said to me a long time ago —“Can I help you?”36．A．book B．card C．range D．limit 37．A．sadness B．comfort C．sorrow D．relief 38．A．turned out B．went out C．brought out D．carried out
39．A．responding B．referring C．reshaping D．rewarding 40．A．teasing B．joking C．smiling D．laughing 41．A．served B．referred C．guided D．regarded 42．A．French B．English C．Russian D．German 43．A．borrow B．shelve C．record D．keep 44．A．packed B．loaded C．handled D．carried 45．A．by B．from C．into D．between 46．A．Suddenly B．Apparently C．Gradually D．Naturally 47．A．realize B．reuse C．recover D．recognize 48．A．progress B．procedure C．process D．procession 49．A．reading B．checking C．borrowing D．lending 50．A．Some times B．Sometimes C．Some time D．Sometime 51．A．complex B．miserable C．similar D．familiar 52．A．for B．as if C．though D．when 53．A．difficult B．smooth C．endless D．straight 54．A．me B．myself C．them D．themselves 55．A．means B．style C．method D．way
Oshima reaches out and lays a hand
on my knee on a totally natural gesture. “Kafka, in everybody’s life there’s a point of no return. And in a very few cases, a point where you can’t go forward any more. And when you reach that point, all we can do is quietly accept the fact. That's how we survive.”
We’re about to get onto the main highway. “There’s one other thing I’d like you to know of,” he goes on. “Miss Saeki has a wounded heart. To some degree that's true of all of us. But Miss Saeki has a special wound that goes beyond the usual meaning of the term. Her soul moves in mysterious ways. I’m not saying she's dangerous-don't get me wrong. On a day-to-day level she's certainly got her act together, probably more than anyone else I know. S he’s attractive, deep, smart. But just don’t let it worry you if you notice something strange about her sometimes.”
“Strange?” I can’t help asking.
Oshima shakes his head. “I really like Miss Saeki, and respect her. I'm sure you'll come to feel the sam e way.”
This doesn’t really answer my question, but Oshima doesn’t say anything.
56. The conversation takes place______ .
A. in the library
B. in a moving car
C. where Kafka lives
D. where Saeki used to spend time with her boyfriend
57. Which of the following statements is right?
A. Oshima knows every single detail about Saeki.
B. Oshima knows Saeki well enough to understand her.
C. Oshima knows Saeki better than any other one.
D. Oshima knows little about Saeki,but respects her.
58. We can infer from the passage that .
A. something is wrong with Saeki’s clock and heart
B. nobody likes Saeki as she refuses to accept the fact
C. Saeki is attractive, smart but a little bit dangerous
D. Saeki still can’t get over the loss of her boyfriend.
59. The writer wants to give us a feeling of _______ by giving readers the description of Saeki.
A. mystery
B. horror
C. amazement
D. Danger
B
From good reading we can get pleasure, companionship, experience, and instruction. A good book may absorb our attention so completely that for the time being we forget our surroundings and even our identity. Reading good books is one of the greatest pleasures in life. It increases our contentment when we are cheerful, and lessens our troubles when we are sad. Whatever may be our main purpose in reading, our contact with good books should never fail to give us enjoyment and satisfaction. With a good book in our hands we need never be lonely. Whether the characters in it are taken from real life or are purely imaginary, they may become our companions and friends. In the pages of books we can walk with the wise and the good of all lands and all times. The people we meet in books may delight us either because they resemble (相像)human friends whom we hold dear or because they present unfamiliar types whom we are glad to welcome as new acquaintances. Our human friends sometimes may bore us, but the friends we make in books need never weary us with their company. By turning the page we can dismiss them without any fear of hurting their feelings. While human friends desert us, good books are always ready to give us friendship, sympathy, and encouragement.
Of all the gifts from reading books, the most valuable one is experience. Few of us can travel far from home or have a wide range of experiences, but all of us can lead varied lives through the pages of books. Whether we wish to escape from the seemingly dull realities of daily routines or whether we long to visit some far-off place, a book will help us when nothing else can. To travel by book we need no bank account to pay our way; no airship or ocean liner or stream-lined train to transport us; no passport to enter the land of our heart's desire. Through books we may get the thrill of hazardous adventure without danger. We can climb high mountains, brave the perils of an Antarctic winter, or cross the scorching sands of the desert, all without hardship. In books we may visit the studios of Hollywood; we may mix with the merry crowds of the Paris boulevards; we may join the picturesque peasants in an Alpine village or the kindly natives on a South Sea island. Indeed, through books the whole world is ours for the asking. The possibilities of our literary experiences are almost unlimited. The beauties of nature, the enjoyment of music, the treasures of art, the triumphs of architecture, the marvels of engineering, are all open to the wonder and enjoyment of those who read.
60. Why do we sometimes forget our surroundings and even our identity while reading?
A. No one is trying to disturb you there.
B. All is so quiet and calm around you.
C. The book you read is so fascinating.
D. Our life is just far from satisfactory.
61. What makes people like their acquaintances in books even more?
A. They are just like our human friends.
B. They are unfamiliar types we like.
C. They will never ever abandon us.
D. They will never hurt our feelings.
62. The word “hazardous” means ______.
A. “unexpected”
B. “dangerous”
C. “imaginary”
D. “unusual”
63. “... the whole world is ours for the asking” implies that we can____________.
A. experience the whole world just by reading
B. get anywhere in the world only by asking
C. make a trip around the world free of charge
D. actually possess everything in this world
64. What is the most suitable title for this passage?
A. Reading and traveling
B. Experiencing the world
C. Traveling with books
D. Gifts from reading
"Hospitals have been designed to be
functional, but we think their artistic aspects should also be considered," said the neurologist. "Beauty obviously offers a distraction that ugly paintings do not. But at least there is no suggestion that ugly surroundings make the pain worse." "I think we need more research on how a beautiful environment makes us suffer less."
Pictures they liked included Starry Night by Van Gogh and Botticelli’s Birth of Venus. Works by Pablo Picasso, Italian artist Anonio Bueno and Columbian Fernando Botero were among the “Ugly” ones. "These people were not art experts so the pictures they found ugly would be considered masterpieces by the art world,"said Prof Brown.
65. The underlined word “The subjects” in Paragraph 2 probably means “_____”.
A. the surveyed
B. the researchers
C. the themes
D. the projects
66. How many artists have been mentioned in the passage?
A. 4.
B. 5.
C. 6.
D. 7
67. Which of the following is TRUE according to the passage?
A. It is necessary to do more research on how beauty reduces pain.
B. A pleasant environment could reduce sensitivity to pains greatly.
C. Hospitals must take their artistic aspects into consideration first.
D. Ugly paintings are confirmed only to make the pain even worse.
68. From the last paragraph, we know that _________.
A. some paintings seemed ugly to men but beautiful to women.
B. some of the artists mentioned above are not real art masters.
C. patients have the same idea about masterpiece as art experts.
D. the ugly paintings in the research are actually masterpieces.
69. Which of the following is the suitable title for the passage?
A. Latest discovery of some “ugly” masterpieces.
B. Beautiful surroundings lessen your pain.
C. New survey on relationship of pain and beauty.
D. More research is needed to reduce pain.
D
In this age of Internet chat, video games and reality television, there is no shortage of mindless activities to keep a child occupied. Yet despite the competition, my 8-year-old daughter Rebecca wants to spend her leisure time writing short stories. She wants to enter one of her stories into a writing contest, a competition which she won last year.
As a writer, I know about winning contests –and about losing them. I know what it is like to work hard on a story only to receive a rejection letter from the publisher. I also know the pressure of trying to live up to a reputation created by previous victories. What if she doesn’t win the contest again? That’s the strange thing about being a parent. So many of our own past scars and destroyed hopes can resurface in our children.
A revelation (启示) came last week when I asked her, “Don’t you want to win again?” “No,” she replied, “I just want to tell the story of an angel going to first grade.”
I had just spent weeks correcting her stories as she spontaneously (自发地) told them. Telling myself that I was merely an experienced writer guiding the young writer across the hall, I offered suggestions for characters, conflicts and endings for her tales. The story about a fearful angel starting first grade was quickly “guided” by me into the tale of a little girl with a wild imagination taking her first music lesson. I had turned her contest into my contest without even realizing it.
Staying back and giving kids space to grow is not as easy as it looks. Because I know very little about farm animals who use tools or angels who go to first grade, I had to accept that I was co-opting my daughter’s experience.
While stepping back was difficult for me, it was certainly a good first step that I will quickly follow with more steps, putting myself far enough away to give her room but close enough to help if asked. All the while I will be reminding myself that children need room to experiment, grow and find their own voices.
70. What do we learn from the first paragraph?
A. Now many amusements compete f or children’s time.
B. Children have lots of fun doing mindless activities.
C. Rebecca is much too busy to enjoy her leisure time.
D. Rebecca often go online for her writing materials.
71. What did the author say about her own writing experience?
A. She was constantly under pressure of writing more.
B. Most of her stories had been rejected by publishers.
C. She didn’t quite live up to her reputation as a writer.
D. Her road to success was full of pain and frustrations.
72. T he underlined word “resurface” in Paragraph 2 probably means “______”.
A. recycle
B. reappear
C. reconsider
D. reunite
73. Why did Rebecca want to enter this year’s writing contest?
A. She was confident about her talent in writing.
B. She was sure of winning with her mother’s help.
C. She wanted to share her stories with readers.
D. She had won a prize in the previous contest.
74. The author took great pains to improve her daughter’s storie s because _______.
A. she wanted to help Rebecca realize her dreams of becoming a writer
B. she was afraid Rebecca’s imagination might run wild while writing
C. she did not want to disappoint Rebecca who needed her help so much
D. she believed she had the knowledge and experience to offer guidance
75. What’s the author’s advice for parents?
A. Children should be given every chance to voice their opinions.
B. Parents should keep an eye on the activities their kids engage in.
C. Children should be allowed freedom to grow through experience.
D. A writing career,though attractive,is not for every child to pursue.
第II卷(非选择题，共35分)
第四部分：写作(共两节；满分35分)
第一节：阅读表达(共5小题；每小题2分，满分10分)
阅读下面短文，并根据短文后的要求答题，然后将答案填入相应的位置上。(请注意答题后的词数要求)。
Statuses(身份) are part of human inventions that help us get along with one another and determine where we “fit” in society. As we go about our daily routines, we mentally attempt to place people in terms of their statuses. For example, we must judge whether the person in the library is a reader or a librarian, whether the telephone caller is a friend or a salesman,and so on.
The statuses we take often vary with the people we meet and change throughout life. Most of us can quickly adjust our statuses that various situations or occasions require. Most of social interaction(互动) consists of identifying and selecting among appropriate statuses and allowing other people to take their statuses in relation to us. This means that we fit our actions to those of other people based on a constant mental process of judgment. Although some of us find the task more difficult than others, most of us perform it rather effortlessly.
A status has been compared to ready-made clothes. Within certain limits, the
buyer can choose style and fabric (衣料). But an American is not free to choose the
costume of a Chinese peasant or that of a Hindu prince. We must choose from among
the clothing presented by our society. Furthermore, our choice is limited to a size
that will fit, as well as by our pocketbook(钱包). Having made a choice within these
limits we can make certain changes, but apart from minor adjustments, we tend to
be limited to what the stores have on their racks(衣架). Statues too come ready made,
and the range of choice among them is limited.
76. What is the function of statuses ? (within 10 words)
______________________________________________________________________ 77. What do we do as the situation changes? (within 5 words)
______________________________________________________________________
78.Which word can you find in Paragraph 2 to replace “identifying”? (1 word)
______________________________________________________________________
79. What are the three factors that limit our choice? (within 5 words)
______________________________________________________________________.
80. What is the main idea of Paragraph 3? (within 7 words)
______________________________________________________________________.
第二节书面表达（满分30分）
注意：字数130左右
南昌二中2014届高三第十一次模拟考试试题
第I卷（选择题） 一、单选题 1.科学家在利用无土栽培法培养一些名贵花卉时，培养液中添加了多种必需的化学元素,其配方如下表： 其中植物根细胞吸收量最少的离子是 A．Ca２+ B.Ｈ2PO3— C. SO42— D．Ｚn2+ 2.关于细胞中元素的叙述,错误的是 A.番茄和水稻根系吸Si元素的量有差异 B.在人体活细胞中氢原子的数目最多 C.地壳和活细胞中含量最多的元素都是氧元素，由此看出生物界和非生物界具有统一性 D.在人体细胞干重中C元素含量最多,是因为细胞中含有大量的有机化合物 ３。用含32P的磷酸盐培养液培养动物细胞,一段时间后，细胞的结构以及化合物中具有放射性的是 ①脱氧核糖 ②细胞核 ③DＮＡ ④核糖 ⑤RNA Ａ．①③ B.①③⑤ C.②③⑤Ｄ.②③④⑤ ４.对下面柱形图的相关含义叙述中，不正确的是A.若Y表示细胞中有机物的含量，ａ、ｂ、c、d表示四种不同的物质,则b最有可能是蛋白质 B.若Y表示组成活细胞的元素含量,则a、b、c、d依次是N、O、H、Ｃ Ｃ．若Y表示一段时间后不同离子在培养液中所占原来的比例，则该培养液中培养的植物,其根细胞膜上ａ离子的载体少于c离子的载体 D．若Y表示细胞液的浓度,ａ、b、c、ｄ表示不同细胞，则在0。３ｇ／ｍL蔗糖溶液中，发生质壁分离的可能性大小为b 2019级高考模拟考试试题（二） 英语 注意事项： 1、答题前，考生务必将自己的姓名、准考证号填写在答题卡上。 2、回答选择题时，选出每小题答案后，用铅笔把答题卡上对应题目的答案标号涂黑。如需改动，用橡皮擦干净后，再选涂其它答案标号。回答非选择题时，将答案写在答题卡上，写在本试卷上无效。 3、考试结束后，请将本试题卷和答题卡一并上交。 第Ⅰ卷（共100分） 第一部分听力（共两节，满分 30 分） 第一节（共5小题：每小题1.5分，满分7.5分） 听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 1. What will the woman do next Saturday? A. Attend a birthday party. B. Sing in a concert. C. Stay at home. 2. What does the woman want the man to do? A Buy her a newspaper. B. Take a picture of her. C. Stop following her. 3. Where does the conversation probably take place? A. In a classroom. B. In a library. C. In a bookstore. 4. Where will the woman go first? A. To the bathroom. B. To the beach. C. To the bank. 5. What does the woman mean? A. The man forgot to do his hair. B. The man needs to buy a new mirror. 江西省南昌市南昌二中2020-2021学年九年级 （上）期中考试物理试题 学校_________ 班级__________ 姓名__________ 学号__________ 一、填空题 1. 物理学的发展离不开广大物理学家不懈的探索和无私的奉献，为了纪念杰出的物理学家，人们将物理学家______的名字命名为电阻的单位，以物理学家 ______的名字命名为内能的单位。 2. 将丝绸摩擦过的玻璃棒去接触不带电的验电器的金属球，就有一部分 ______(选填“正电荷从玻璃棒移到金属铂’或‘电子从金属箔移动到玻璃棒”)上，两箔片就张开，如图所示，则两箔片带上的是______(填“正”或“负”) 电荷。 3. 如图所示是汽油机工作时的各种冲程示意图，其中表示为内能转化为机械能的冲程是图______，若它的飞轮转速为1800r/min，则该汽油机每秒对外做功 ______次。 4. 青少年在安静地思考问题的时候，心脏推动血液流动的功率约为，则 你在考试的内，心脏做功约为________J，相当于一个体重的人 登高_______m。 5. 新冠肺炎疫情中，每天要对市区环境进行消杀杀菌。一辆正在喷洒消毒液的汽车匀速行驶在水平街道上，汽车的总动能将逐渐_________，机械能将 __________。（均选填“变大”“变小”或“不变”） 6. 把图钉帽在课桌上来回摩擦几下后，图钉帽热得烫手，这是用______的方法改变了物体的内能；把瓶装水放在冰箱里，一会儿变凉了，这是用______的方法改变了物体的内能． 7. 如图甲所示的电路中，当闭合开关后，两个电压表指针偏转均如图乙所示， 则电灯L 1和L 2 两端的电压分别为_______V和 _________V． 8. 如图所示，小强在30s内用滑轮组将物体A沿水平方向匀速移动6m，已知物体A重800N，它受到的摩擦力为60N，小强所用的拉力为25N，则A的重力 做功______J，此滑轮组的机械效率为______。 9. 某段金属丝两端电压为6V时，通过的电流为0.3A；当该金属丝两端电压降为4V时，通过它的电流为_____A；当该金属丝两端电压降为0V时，它的电阻为_____Ω． 10. 两个电阻R1=6Ω，R2=4Ω，串联起来接入电路，通过它们的电流之比 I 1 ∶I2=_________，若把R1、R2并联接入电路，则此时通过它们的电流之比 I 1 '∶I2'=_________。 二、单选题 11. 下列说法正确的是（） A．做功越多，功率越大B．做功越快，功率越大 C．功率越大的机械越省力D．功率越大的机械效率越高 12. 如图所示是一个两面光滑的斜面，∠α小于∠β，同一个物体分别在AC 和BC受拉力匀速运动到C点，所需的拉力分别为F A和F B所做的功分别为W A和 江西省南昌二中、临川一中2017届高三下学期期中联考英语试卷 第一部分听力（共两节,满分30分） 第一节（共5小题;每小题1.5分,满分7.5分） 听下面5段对话.每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置.听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题.每段对话仅读一遍. 1．Where are the speakers going? A．To New York B．To Canada C．To Mexico 2．Why can’t Tim take Jenny’s shift? A．He has a soccer game. B．He is on vacation. C．He has to go to a funeral. 3．What does the woman mean? A．There is a bomb in the refrigerator. B．They will probably run out of food. C．More than enough food has been prepared. 4．What subject does the woman think less difficult? A．Literature B．History C．Mathematics 5．What did the woman study in college? A．Business B．Art C．Spanish 第二节（共15小题;每小题1.5分,满分22.5分） 听下面5段对话或独白.每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置.听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各个小题将给出5秒钟的作答时间.每段对话或独白读两遍. 听下面一段对话,回答第6-7题. 6．What happened to Miguel last weekend? A．He lost his textbook. B．He took care of his grandma. C．His house was burned to the ground. 7．Why will Miguel be late to Ms. Perry’s office? A．He has to buy his lunch. B．He had to do his homework. C．He has to make food for his grandma. 听下面一段对话,回答第8-10题. 8．What does the man do for his job? A．He cleans houses. B．He does paperwork. C．He sells houses. 9．When does the conversation take place? A．On Thursday B．On the weekend. C．On Friday 10．Why does the woman recommend the man her friend? A．She is moving. B．She enjoyed working with him. C．Her friend is moving to Springfield. 听下面一段对话,回答第11-13题. 11．How old is Sam? A．He’s in college.B．He’s in high school.C．He’s still a young kid. 济钢高中3月初高三模拟考试 英语试题参考答案2020.3 第一部分阅读理解(共两节，满分50分) 第一节(共15小题；每小题2.5分，满分37.5分) 1-3 BCB 4-7 AACA 8-11 BCDA 【解析】8．B．细节理解题，根据文章第一段的句子'There's no place like home．'This English saying has much truth in it可知，对英国的年轻人来说合适的谚语是：金窝银窝不如自己的草窝．故选B．9．C．细节理解题，根据文章第三段的句子More young people had lost their jobs，and others couldn't afford their rent compared with the previous year．可知，失业率增加是越来越多的孩子喜欢回家住的原因．故选C． 10．D．观点态度题，根据文章倒数第二段的句子If your child comes home and you see them struggling financially，you feel more awkward asking them for rent or to contribute可知，Emma Craig对回家的孩子的态度是可以理解的．故选D． 11．A．段落大意题，根据文章最后一段的句子With parents splashing out around ￡1，886 on takeaway food，buying new furniture and upgrading their Wi-Fi for the benefit of their offspring可知，和父母一起生活是有代价的．故选A． 本文介绍现在很多英国年轻人喜欢回家和父母一起居住，文章分析其中的原因． 做这类题材阅读理解时要求考生对文章通读一遍，做题时结合原文和题目有针对性的找出相关语句进行仔细分析，结合选项选出正确答案．推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案，切忌胡乱猜测，一定要做到有理有据． 12-15 CACD 【解析】 【分析】这是一篇新闻报道。穿山甲是世界上被贩运最频繁的哺乳动物，并且正面临灭绝。一部新的野生动物纪录片《穿山甲之眼》正在尝试以一种独特的方式来呼吁人们采取行动保护它们。12．推理判断题。根据第四段中的“the aim of the documentary is to inspire viewers around the world to call for action to end trafficking and protecting these unique creatures.”可知，该纪录片的目的是呼吁全世界的观看者采取行动，制止贩运从而保护这些独特的生物。因此，该纪录片的目的是提高对穿山甲保护的认识。故选C。 13．词义猜测题。根据第二段中的“One thing however that might seem unimportant is that they are actually quite fussy eaters. You would think they would eat any type of ant, but they all prefer a specific type ant.”可知，穿山甲实际上是挑剔的食者。你会认为他们会吃任何类型的蚂蚁，但他们更喜欢特定类型的蚂蚁。即划线词“fussy”意为“挑剔”的。A. Picky. 挑剔的；B. Messy.凌乱的；C. Showy.显眼的； D. Heavy.沉重的。故选A。 【最新】江西南昌二中高三上三模地理试卷学校:___________姓名：___________班级：___________考号：___________ 一、单选题 某学校地理兴趣小组做了如下实验：做两个相同规格的玻璃箱（如下图），甲底部放一层土，中午同时把两个玻璃箱放在日光下，十五分钟后，同时测玻璃箱里的气温，结果发现底部放土的比没有放土的足足高了3℃。据此回答下列各题。 1．该实验主要目的是测试（） A．大气的温室效应 B．大气的热力运动 C．一天中最高气温出现的时刻 D．大气主要的直接热源 2．甲箱温度比乙箱温度高的原因是（） A．太阳辐射强弱差异 B．地面辐射强弱差异 C．大气吸热强弱差异 D．大气辐射强弱差异 读“某年11月7日(立冬)我国大陆部分各地季节状况图”，回答下面小题。 3．形成图中我国各地在同一天出现有三种季节的主要原因是( ) A．海陆热力性质差异B．地形地貌地区差异 C．各地纬度差异大D．各地经度差异大 4．立冬日，南部沿海地区仍处在夏季的主要原因是( ) A．位于低纬，太阳高度小B．南岭阻挡弱冷空气南下 C．临海比热容大，气温高D．刚好有台风登陆，气温高 5．此时由西南到长江以南地区形成大范围降雨，其形成原因最可能是( ) A．受副热带高压控制B．锋面在附近活动 C．山地抬升偏北风D．受台风登陆影响 下图表示我国地理“四极”特征变化趋势图,据此回答下列各题。 6．下列因素对“四极”形成影响不大的是( ) A．纬度位置B．海陆位置C．地形起伏D．洋流 7．影响图中甲地区农业发展的直接限制性因素是( ) A．光照弱B．气温低 C．降水少D．冻土分布广 下面是一幅世界地图的一段纬线，P点以东是海洋，Q点以西是海洋，S和T 之间为某一海域。 判断下列各题。 8．S～T之间的海域是( ) A．波斯湾B．墨西哥湾C．红海D．莫桑比克海峡9．实际观测表明，P海岸降水明显多于T海岸，其主要影响因素是( ) A．洋流B．地形C．季风D．气压带、风带 2019年江西省名校临川一中·南昌二中第二次联合考试 英语 第一部分听力（共两节，满分30分） 该部分分为第一、第二两节。注意：回答听力部分时，请先将答案标在试卷上。听力部分结束前，你将有两分钟的时间将你的答案转涂到答题卡上。 第一节（共5小题；每小题1.5分，满分7.5分） 听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 1. What will the man do this weekend? A. Meet his professor. B. See a movie. C. Do a project. 2. How much will the man pay? A. $50. B. $100. C. $200. 3. Where will the speakers go? A. To a Thai restaurant. B. To an Italian restaurant. C. To a Mexican restaurant. 4. What does the man mean? A. The film is terrible. B. The film can be seen online. C. The film is worth the money. 5. Where does the conversation probably take place? A. At home. B. At a hospital. C. At a drug store. 第二节（共15小题；每小题1.5分，满分22.5分） 听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。 听第6段材料，回答第6、7题。 6. Why does the woman call the man? A. To change the address. B. To check on a delivery. C. To order a pair of shoes. 7. When will the shoes arrive? A. On March 10th. B. On March 7th. C. On March 5th. 广西柳州市2019届高三英语3月模拟考试试 卷 一、阅读理解（共15题；每小题2分，满分30分） 1.阅读理解 Unbelievable Stories of Animals Acting Just Like Humans Horses are picky eaters Horses have an even better sense of smell than humans do. When horses raise their noses and open their nostrils (鼻孔) , their nervous system allows them to sense smells we can't sense. This might explain why they refuse dirty water and carefully mover around meadows, eating only the tastiest grasses, experts say. Whale says thanks In 2011, a whale expert spotted a humpback whale trapped in a fishing net and spent an hour freeing it. Afterward, in an hour-long display of thanks, the whale swam near their boat and leaped into the air about 40 times. Pandas like to be naughty 一、选择题（1－24题,每小题１分；25－３０题,每小题２分，共36分。每题均只有一个正确选项） 1.若呼吸底物全为葡萄糖,下列关于人体呼吸作用的叙述，正确的是 Ａ．８００ｍ慢跑过程中O２吸收量大约等于CO２释放量 B.马拉松比赛时消耗等量葡萄糖放出的能量比步行时多 C．环境温度从0℃升到37℃，人体呼吸作用相关酶的活性逐渐上升 Ｄ.包扎伤口应选用透气性好的“创可贴"，主要目的是保证伤口处细胞的有氧呼吸 2.当酵母菌以葡萄糖为呼吸底物时,下列叙述正确的是 A.如果检测有ＣO２释放量，则说明酵母菌进行有氧呼吸 B．如果测得CO２释放量：O2吸收量等于１：1,则说明酵母菌只进行有氧呼吸 C.如果测得呼吸作用的过程中没有产生水，则产物中也不会有CO２ D．检测酒精可用重铬酸钾，溶液的颜色由灰绿色变为橙色 3．光合作用是生物界中重要的物质与能量代谢，下列有关叙述正确的是 A.给绿色植物提供含有Ｈ２18Ｏ的水,含1８Ｏ的物质只有释放出来的O２ B.根据光合作用释放的O2量,可以推算出光合作用中有机物的积累量 C.停止光照,暗反应很快会停止，而停止供应ＣO2则光反应不受影响 D．生产生活中,温室大棚普遍采用红色的塑料薄膜来提高作物产量 4．某科研小组为探究酵母菌的细胞呼吸方式，进行了如图所示实验(假设细胞呼吸产生的热量不会使瓶中的气压升高),开始时溴麝香草酚蓝水溶液的颜色基本不变，反应一段时间后溶液颜色由蓝变绿再逐渐变黄。下列有关分析正确的是 A.溴麝香草酚蓝水溶液颜色由蓝变绿再变黄说明酵母菌在不断地产生CO２ B.溴麝香草酚蓝水溶液的颜色一开始不变是因为酵母菌只进行了有氧呼吸 第二部分阅读理解（共两节，满分40分） 第一节（共15小题；每小题2分，满分30分） A If you frequently travel for business，Staybridge Suites offer you a range of home comforts．Four recent visitors to Staybridge Suites explain why they booked，what they enjoyed and what made them want to return． Claire Metcalf "The concept is great，but the staff are the ones who really make it．"she says．"It takes a lot of discipline to always be friendly，but the staff at Staybridge Suites do that．They genuinely care about you．" Andrew Roberts "One of the best things is having my own kitchen．I often end up working late and I don't fancy eating in a restaurant on my own，so cooking for myself is a big drawcard．" "The main thing for me is being able to cook and have my own little flat．The staff are amazing．It is great to be recognized by them，"he says． Pauline Robinson "What I love about it is the way that you are treated by the staff，"she says．"Some of the staff have been there all that time and they do look after you well．As a woman staying on my own，it is reassuring that they look out for you，and recently when I was poorly they even brought things I needed to my room．" Ryan Ruckledge "The fully﹣equipped kitchen is great．I always have a one﹣bed apartment so I have a separate kitchen and dining room and I'm able to relax and cook some meals．Eating out can feel a bit much when you do it day in and day out﹣it makes you hate what you do﹣and I don't want that． 21．What attracts visitors to Staybridge Suites A．A separate dining room．B．A one﹣bed apartment． C．A home from home．D．A lot of discipline． 22．Who think highly of the kitchen of Staybridge Suites A．Pauline Robinson and Ryan Ruckledge．B．Ryan Ruckledge and Claire Metcalf． C．Andrew Roberts and Ryan Ruckledge．D．Pauline Robinson and Claire Metcalf． 23．What does the underlined word ‘drawcard' in Paragraph 3 probably mean 2017-2018学年江西省南昌二中高二（上）期末数学试卷（理科） 一、选择题（本大题共12小题，每小题5分，共60分．每小题只有一个选项 符合题意．） 1．（5分）证明不等式“”最适合的方法是（）A．综合法B．分析法C．反证法D．数学归纳法2．（5分）命题“?x∈R，?a∈R，使得n＞|x﹣1|﹣|x﹣2|”的否定形式是（）A．?x∈R，?a∈R，使得n≤|x﹣1|﹣|x﹣2| B．?x∈R，?a∈R，使得n≤|x﹣1|﹣|x﹣2| C．?x∈R，?a∈R，使得n≤|x﹣1|﹣|x﹣2| D．?x∈R，?a∈R，使得n≤|x﹣1|﹣|x﹣2| 3．（5分）在复平面内，复数对应的点位于（）A．第一象限B．第二象限C．第三象限D．第四象限4．（5分）经过点（2，﹣4）且与双曲线有同渐近线的双曲线方程是（）A．B． C．D． 5．（5分）已知函数f（x）的导函数为f′（x），且满足f（x）=lnx+x2f′（1），则f′（1）=（） A．﹣1B．e C．﹣e D．1 6．（5分）设x，y，z都是正数，则三个数（）A．都大于2B．至少有一个不小于2 C．至少有一个大于2D．至少有一个不大于2 7．（5分）若关于x的不等式|x﹣2|+|x+a|＞4的解集为R，则实数a的取值范围为（） A．（﹣∞，﹣6）∪（2，+∞）B．（﹣6，2） C．（﹣∞，﹣6）∪（﹣2，+∞）D．（﹣6，﹣2） 8．（5分）在下列结论中，正确的结论为（） ①“p且q”为真是“p或q”为真的充分不必要条件 ②“p且q”为假是“p或q”为真的充分不必要条件 ③“p或q”为真是“￢p”为假的必要不充分条件 ④“￢p”为真是“p且q”为假的必要不充分条件． A．①②B．①③C．②④D．③④ 9．（5分）若不等式|2x﹣3|+|2x﹣5|＜4的解集为（a，b），则曲线与直线y=x﹣3及直线x=a，x=b所围成的封闭图形的面积为（） A．B．ln3C．D．ln3+2 10．（5分）已知函数f（x）=x3﹣3x，若过点M（3，t）可作曲线y=f（x）的三条切线，则实数t的取值范围是（） A．（﹣9，﹣8）B．（﹣18，18）C．（﹣18，6）D．（﹣6，6）11．（5分）若关于x的不等式k|x|﹣|x﹣2|＞0恰好有4个整数解，则实数k 的取值范围是（） A．B．C．D． 12．（5分）已知函数f（x）是定义在（0，+∞）的可导函数，f'（x）为其导函数，当x＞0且x≠1时，，若曲线y=f（x）在x=1处的切线的斜率为﹣1，则f（1）=（） A．B．0C．D．1 二、填空题（本大题共4小题，每小题5分，共20分） 13．（5分）已知a，b∈R，i是虚数单位，若a+2i=1﹣bi，则复数z=a+bi的模|z|=． 14．（5分）已知函数，则=． 15．（5分）在平面直角坐标系中，△ABC的顶点A、B分别是离心率为e的圆锥曲线的焦点，顶点C在该曲线上．一同学已正确地推得：当m＞n 绝密★启用前 江西省名校（临川一中、南昌二中） 2019届高三年级下学期第二次联考 英语试题 （解析版） 注意事项： 1本试卷分第Ⅰ卷（选择题）和第Ⅱ卷（非选择题）两部分.满分150分.考试时间为120分钟. 2本试卷分试题卷和答题卷，第Ⅰ卷（选择题）的答案应填在答题卷卷首相应的空格内，做在第Ⅰ卷的无效. 3答题前,考生务必将自己的姓名、准考证号填涂在答题卡相应的位置。 第Ⅰ卷（选择题,共100分） 第一部分听力 (共两节,满分30分) 第一节 (共5小题；每小题l.5分,满分7.5分) 听下面5段对话,每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 例：How much is the shirt? A.$19.15 B. $9.18 C.$9.15 答案是C 1. What transportation did the man take? A. The bus. B. The taxi. C. The subway. 2. Why doesn't the man wear his yellow shirt? A. It's missing. B. He doesn't like it. C. Two buttons are off it. 3. What is Cindy's bad behavior in class? A. Sending text messages. B. Arguing with Mr. Jackson. C. Talking with her classmates. 4. What are the speakers mainly talking about? A. Details of the report. 绝密★启用前试卷类型:A 2019-2020年高三第一次（3月）模拟考试英语试题含答案 本试卷分第Ⅰ卷和第Ⅱ卷两部分，共 12页。满分 150分。考试用时 120分钟。考试结束后，将答题卡交回。 注意事项： 1．答题前，考生务必用0.5毫米黑色签字笔将自己的姓名、座号、准考证号、县区和科类在答题卡和试卷规定的相应位置上。 2．第Ⅰ卷每小题选出答案后，用２B铅笔把答题卡上对应题目的答案标号涂黑；如需改动，用橡皮擦干净后，再选徐其他答案标号。 3．第Ⅱ卷必须用0.5毫米黑色签字笔作答，答案必须写在答题卡各题目指定区域内相应的位置，不能写在试卷上；如需改动，先划掉原来的答案，然后再写上新的答案；不能使用涂改液、胶带纸、修正带。不按以上要求作答的答案无效。 第Ⅰ卷（共105分） 第一部分听力（共两节，满分30分） 该部分分为第一、第二两节。注意：回答听力部分时，请先将答案标在试卷上。听力部分结束前，你将有两分钟的时间将你的答案转涂到客观题答题卡上。 第一节（共5小题；每小题1.5分，满分7.5分） 听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 例：How much is the shirt? A. $１9. l5. B. $9. l5. C. $9. 18. 答案是B。 1. Where does the conversation most probably take place? A. In a factory. B. In a hospital. 江西省南昌市第二中学2014-2015学年高一上学期期中考试化学试题 1.“纳米材料”是粒子直径为1~100nm的材料，纳米碳就是其中一种，若将纳米碳均匀地分散到蒸馏水中，所形成的物质（） ①是溶液②是胶体③能产生丁达尔效应④能透过滤纸⑤不能透过滤纸 ⑥静置后会析出黑色沉淀 A.①④⑤ B.②③④ C.②③⑤ D.①③④⑥ 2.在体积相同的两个密闭容器中分别充满NO2、N2O4气体，当这两个容器内温度和气体密度相等时，下列说法正确的是（） A.两种气体的压强相等 B.两种气体N原子为12 C.两种气体的分子数目相等 D.两种气体的氧原子数目相等 3．设阿伏加德常数为N A，则下列说法正确的是（） A.常温常压下，11.2 LCH4中含有的氢原子数为2N A B.2.7 g铝与足量的盐酸反应，失去的电子数为0.3N A C.含有N A个氦原子的氦气在标准状况下的体积约为11.2L D.1 L 0.1 mol/L MgCl2溶液中含Cl-数为0.1N A 4．在25℃时,在一刚性容器内部有一个不漏气且可滑动的活塞将容器分隔成左右两室。 左室充入氮气,右室充入氢气与氧气的混和气体,活塞恰好停留在离左端的1/5处(图1),然后引燃氢、氧混和气体,反应完毕后恢复至原温度,活塞恰好停在中间(图2),如果忽 略水蒸气体积,则反应前氢气与氧气的体积比可能是 5.下列说法正确的是（） A.还原剂失去电子变成还原产物 B.氧化剂被氧化成还原产物 C.氧化剂是得到电子，发生还原反应的物质 D.还原剂是化合价下降得到电子被氧化的物质 6．能用H＋＋OH－＝H2O表示的化学反应是( ) A.氢氧化镁和稀盐酸反应 B.Ba(OH)2溶液滴入稀硫酸中 C.澄清石灰水和稀硝酸反应 D.二氧化碳通入澄清石灰水中 7.下列反应的离子方程式错误的是（） A.碳酸钙和稀盐酸反应： CaCO3＋2H＋===Ca2＋＋CO2↑＋H2O 高三英语模拟考试试题（附答案） 英语 本试卷分第Ⅰ卷（选择题）和第Ⅱ卷（非选择题）两部分。满分150分。考试时间120分钟。 第Ⅰ卷（共105分） 注意事项： 1.答第Ⅰ卷前，考生务必将自己的姓名、准考证号、考试科目涂写在答题卡上。 2.每小题选出答案后，用2B铅笔把答题卡上对应题目的答案标号徐黑。如需改动，用橡皮擦干净后，再选涂其他答案标号。不能答在试卷上。 第一部分：听力（共两节，满分30分） 该部分分为第一、第二两节。注意：回答听力部分时，请先将答案标在试卷上。听力部分结束前，你将有两分钟的时间将你的答案转涂到客观题答题卡上。 第一节（共5小题；每小题1.5分，满分7.5分） 听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读—遍。 1.Where has the woman probably just been？ A.To a bank. B.To a market. C.To a post office. 2.what is the probable relationship between the speakers？ A.Mother and son. B.Doctor and patient. C.Teacher and student. 3.What does the man suggest the woman do？ A.Keep silent. B.Buy a new cup. C.Speak the truth. 4.What does the man want to eat now？ A.Strawberries. B.Chips. C.Cakes. 5.What time is it now？ A.9:00. B.10：00. C.11：00. 第二节（共15小题；每小题1.5分，满分22.5分） 听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有时间阅读各小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。 听第6段材料，回答第6、7题。 6.What are the speakers mainly talking about？ A.A coat. B.A pair of socks. C.A pair of gloves. 7.What is the usual price？ A.＄15. B.＄7.5. C.＄5. 听第7段材料，回答第8、9题。 8.What does the woman think is beautiful？ A.The beach. B.The blue water. C.The sound of waves. 9.What did the man do when he first saw the ocean？ xx学校xx学年xx学期xx试卷 姓名:_____________ 年级:____________ 学号:______________ 题型选择题填空题简答题xx题xx题xx题总分 得分 一、xx题 （每空xx 分，共xx分） 试题1: 中子星是恒星演化过程的一种可能结果，它的密度很大。现有一中子星，观测到它的自转周期为T＝1/30s。向该中子星的最小密度应是多少才能维持该星体的稳定，不致因自转而瓦解。计等时星体可视为均匀球体。（引力常数G＝6.67×10－11m3/kg·s2） 试题2: 如图所示，在盛水的圆柱型容器内竖直地浮着一块圆柱型的木块，木块的体积为V，高为h，其密度为水密度ρ的二分之一，横截面积为容器横截面积的二分之一，在水面静止时，水高为2h，现用力缓慢地将木块压到容器底部，若水不会从容器中溢出，求压力所做的功。 试题3: 光滑水平面上放有如图所示的用绝缘材料料成的“┙”型滑板，（平面部分足够长），质量为4m，距滑板的A壁为L1距离的B处放有一质量为m，电量为+q的大小不计的小物体，物体与板面的摩擦不计，整个装置处于场强为E的匀强电场中，初始时刻，滑板与物体都静止，试求： （1）释放小物体，第一次与滑板A壁碰前物体的速度v1多大？ （2）若物体与A壁碰后相对水平面的速度大小为碰前的3/5，则物体在第二次跟A壁碰撞之前瞬时，滑板的速度v和物体的速度v2分别为多大？（均指对地速度） （3）物体从开始运动到第二次碰撞前，电场力做功为多大？（碰撞时间可忽略） 评卷人得分 试题4: 为了证实玻尔关于原子存在分立能态的假设，历史上曾经有过著名的夫兰克—赫兹实验，其实验装置的原理示意图如图所示.由电子枪A射出的电子，射进一个容器B中，其中有氦气.电子在O点与氦原子发生碰撞后，进入速度选择器C，然后进入检测装置D.速度选择器C由两个同心的圆弧形电极P1和P2组成，当两极间加以电压U时，只允许具有确定能量的电子通过，并进入检测装置D.由检测装置测出电子产生的电流I，改变电压U，同时测出I的数值，即可确定碰撞后进入速度选择器的电子的能量分布. 我们合理简化问题，设电子与原子碰撞前原子是静止的，原子质量比电子质量大很多，碰撞后，原子虽然稍微被碰动，但忽略这一能量损失，设原子未动（即忽略电子与原子碰撞过程中，原子得到的机械能）.实验表明，在一定条件下，有些电子与原子碰撞后没有动能损失,电子只改变运动方向.有些电子与原子碰撞时要损失动能，所损失的动能被原子吸收，使原子自身体系能量增大， (1)设速度选择器两极间的电压为U（V）时，允许通过的电子的动能为E k（eV），导出E k（eV）与U（V）的函数关系（设通过选择器的电子的轨道半径r=20.0 cm，电极P1和P2之间隔d=1.00 cm,两极间场强大小处处相同），要说明为什么有些电子不能进入到接收器. (2)当电子枪射出的电子动能E k=50.0 eV时，改变电压U（V），测出电流I（A），得出下图所示的I—U图线，图线表明，当电压U为5.00 V、2.88 V、2.72 V、2.64 V时，电流出现峰值，定性分析论述I—U图线的物理意义. (3)根据上述实验结果求出氦原子三个激发态的能级E n（eV），设其基态E1=0. 试题5: 曾经流行过一种向自行车车头灯供电的小型交流发电机，图1为其结构示意图。图中N、S是一对固定的磁极，abcd为固定在转轴上的矩形线框，转轴过bc边中点、与ab边平行，它的一端有一半径r0＝1.0cm的摩擦小轮，小轮与自行车车轮的边缘相接触，如图2所示。当车轮转动时，因摩擦而带动小轮转动，从而使线框在磁极间转动。设线框由N＝800匝导线圈组成，每匝线圈的面积S＝20cm2，磁极间的磁场可视作匀强磁场，磁感强度B＝0.010T，自行车车轮的半径R1＝35cm，小齿轮的半径R2＝4.cm，大齿轮的半径R3＝10.0cm（见图 2）。现从静止开始使大齿轮加速转动，问大齿轮的角速度为多大才能使发电机输出电压的有效值U＝3.2V？（假定摩擦小轮与自行车轮之间无相对滑动）部编版2020届高三英语模拟考试试题(二) 新人教 版
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