江西南昌二中
2012届高三第二次统一考试
英语试题
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．What do the man' s parents want him to be?
A．A teacher．B．An engineer．C．A doctor．2．What will the weather be like in the evening?
A．Snowy．B．Clear．C．Rainy．3．How did the man feel about the film?
A．He liked the last part of it．B．He didn't like it at all．C．He liked it very much．
4．What will the woman do next?
A．Talk to a police officer．
B．Tell the man what happened in detail．
C．Wait for the man to call back．
5．What are the speakers talking about?
A．Their home in the future．
B．How technology has changed their lives．
C．The making of a robot．
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。
听第6段材料，回答第6、7题。
6．What is the man doing?
A．Asking permission from his mother．
B．Giving his mother some suggestions．
C．Telling his mother about his school life．
7．What do we know about the man?
A．He often helps his mother in the kitchen．
B．He will not live with his parents soon．
C．He wants to take some dancing lessons．
听第7段材料，回答第8、9题。
8．What did the speakers just do?
A．They met Sandy．B．They went to a museum．C．They had a job interview．
9．Why doesn't the woman want Sandy to get the job in the larger company?
A．It is not a good job．
B．She wants to apply for the job．
C．It's too far away．
听第8段材料，回答第10至12题。
10．What holiday in the West does the man compare the Spring Festival to?
A．Thanksgiving Day．B．Christmas．C．Easter．
11．On which day of the first month of the lunar calendar does the festival end officially?
A．The fifth．B．The seventh．C．The fifteenth．
12．Why did people use to set off firecrackers?
A．To welcome the coming of spring．
B．To create a festive atmosphere．
C．To drive away the bad spirits．
听第9段材料，回答第13至16题。
13．What do we know about the coffee shop?
A．It is American-style．
B．It is open around the clock．
C．It provides home-made bread．
14．What does the man want to have?
A．Steak．B．Potatoes．C．Chicken．15．Where are the speakers?
A．In America．B．In Japan．C．In China．16．What time is it now?
A．6:00 a．m．B．12:00 a．m．C．6:00 p．m．听第10段材料，回答第17至20题。
17．What activity will the school organize on Friday morning?
A．Visit a museum．B．Attend a lecture．C．See a film．18．Why will they play games?
A．To memorize new words．B．To get to know the others．C．To take a break．
19．When will they go to Bath?
A．At 7 :00 p．m．on Friday．
B．At 6 :00 a．m．on Saturday．
C．At 10 :00 a．m．on Saturday．
20．What is the arrangement on Sunday?
A．They are free to do what they want．
B．They will have lessons．
C．They will take a trip．
第二部分：英语知识运用（共两节，满分45分）
第一节单项填空（共15小题；每小题1分，满分15分）
从A、B、C、D四个选项中，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。
21．Don’t touch _______ live wire, or you will get _______ sho ck．
A．the; the B．the; a C．不填; a D．不填；不填22．—Have you________ Betty yet?
—Not really．She won’t forgive me for having told her lie s．
A．put up with B．come up with C．made up with D．kept up with 23．—Andy works hard．
—So he does．He is often seen _____ heavily before his teammates have even arrived at practice．A．to be sweated B．sweated C．be sweated D．sweating 24．I have been working with Lily for years, and never before her so serious!
A．I found B．I have found C．did I find D．have I found 25．The talk between the two leaders was aimed at ending the long of war between the two countries．
A．sense B．state C．case D．condition 26．The two old sisters, so long, held each other and burst into tears．A．being separated B．having been separated
C．having separated D．had been separated
27．Broadly speaking, I would agree with Shirley, though not ________．
A．entirely B．widely C．extremely D．eventually 28．They have most carefully the time and money needed to complete the project．A．picked out B．left out C．figured out D．taken 29．—The contest is so easy, but you fail to pass it．
—I’m sorry it ______ be this way．
A．need B．should C．may D．would 30．Now that the forest was destroyed by a big fire, a large ________of trees ______ to be planted on the mountain．
A．number; has B．quantity; has C．amount; have D．sum; have 31．It can’t be a（n）_______ that four jewelry stores were robbed in one night．A．accident B．incident C．chance D．coincidence 32．It was on July 1, 2006 ___ Qinghai-Tibet railway began operation, ____ is a symbolic project in China’s West Development Strategy．
A．when; that B．that; when C．which; when D．that; which 33．—Tom, you are caught late for the third time．
—Oh, __________．
A．not at all B．just my luck C．never mind D．that’s all right 34．Lin Yi isn’t what it used to be．The last decade ______ great changes in the city images．A．witnessed B．was witnessed C．has witnessed D．had witnessed 35．—I got upset yesterday just because you didn’t hand in your homework on time．—Terribly sorry．Ten more minutes, I ______ it to you．
A．would have taken B．would take C．had taken D．must have taken
第二节完型填空（共20小题；每小题1．5分，满分30分）
阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最佳选项。
The Making of a Surgeon
How does a doctor recognize the point in time when he is finally a “surgeon”? As my year as
chief resident （进修医生）drew to a close, I asked myself this question 36 more than one occasion．
The answer, I concluded, was 37 ．When you can say to yourself, “There is no surgical patient I cannot treat competently, treat just 38 or better than any other surgeon”-- then, and not until then, you are 39 a surgeon．I was 40 that point．
41 , for example, the emergency situations that we met almost every nigh t．The first few months of the year I had 42 the ringing of the telephone．I knew it meant another critical decision to be 43 ．Often, after I had told Walt or Larry what to do in a particular44 , I'd have trouble getting back to sleep．I'd 45 all the facts of the case and, often, wonder 46 I had made a poor decision．More than once at two or three in the 47 , after lying awake for an hour, I’d get out of 48 , dress and drive to the hospital to see the patient myself．It was the only 49 I could find the 50 of mind I needed to relax．
Now, in the last month of my residency,51 was no longer a problem．Sometimes I still couldn’t be sure of my decision, but I had learned to 52 this as a constant problem for a surgeon．I knew that with my knowledge and experience, any decision I'd made was bound to be a 53 one．It was a nice feeling．
This all sounds conceited （自负的）and I guess it is -- 54 a surgeon needs concei t．He needs it to encourage him in trying moments when he's bothered by the 55 and uncertainties that are part of the practice of medicine．He has to feel that he's as good as and probably better than any other surgeon in the world．Call it conceit -- call it self-confidence; whatever it was, I had it．
36．A．at B．in C．on D．for 37．A．self-service B．self-centered C．self-reliant D．self-confidence 38．A．as good as B．as well as C．as far as D．as long as 39．A．indeed B．maybe C．perhaps D．even 40．A．waiting B．standing C．lying D．nearing 41．A．Let B．Take C．Have D．Get 42．A．valued B．avoided C．feared D．enjoyed 43．A．made B．applied C．included D．developed 44．A．condition B．state C．occasion D．situation 45．A．retell B．review C．revise D．remind 46．A．if B．why C．how D．when 47．A．evening B．day C．morning D．afternoon 48．A．flat B．bed C．house D．apartment 49．A．means B．approach C．method D．way 50．A．peace B．trouble C．sorrow D．excitement 51．A．driving B．reviewing C．sleeping D．lying 52．A．expect B．accept C．respect D．inspect 53．A．critical B．poor C．sound D．difficult 54．A．but B．or C．so D．and 55．A．confidence B．conceit C．solutions D．doubts
第三部分：阅读理解（共20小题，每小题2分，满分40分）
阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。
A
WHAT happens to a teenage kid when the world he thought he knew suddenly changes? Find out in Little Brother by American author Cory Doctorow．It is a fascinating book for a new generation of sci-fi readers．
Marcus Yallow, 17, from San Francisco is much more comfortable in front of a computer than obeying the rules of society．Smart, fast and wise to the ways of the networked world, he has no trouble outwitting （骗过）his high school's monitoring system．This way he and his friends get to head off to play a popular online game in real life．
While they are playing, a bomb explodes on the Bay Bridge．Marcus stops a military vehicle to get help for his injured friend, but this simple act throws him into a Department of Homeland Security （DHS）secret prison．There he is treated as a possible terrorist．He is eventually let go after four days, but his injured friend disappears．
When he returns, Marcus discovers that there are many "security measures" in place and that now all citizens are treated like potential terrorists．While some consider this government action necessary for public safety, Marcus sees this as a complete destruction of the rights he is supposed to have as a citizen．
He knows that no one will believe his story, which leaves him with only one thing to do: to take down the DHS himself．He helps organize a large network called Xnet to spread the truth, anonymously （匿名地）．
The book presents a young man who is irresponsible, but learns about himself, and grows, in the course of the story．As part of this learning and growing he becomes aware of very serious issues about his society．
56．What kind of article does this passage belong to?
A．A fascinating story B．A book review
C．A News report D．A TV programme
57．The underlined word “destruction” in the passage means ．
A．damage B．reward C．ruin D．protection 58．Marcus Yallow was sent to prison because ．
A．he killed his friend
B．he bombed a military vehicle
C．he did something that a possible terrorist could do
D．his injured friend disappeared
59．From the second paragraph we can infer that ．
A．Marcus Yallow is much more comfortable obeying the rules of society
B．Marcus Yallow is smart, fast and wise in real life
C．Marcus Yallow always plays online games in real life
D．Marcus Yallow is expert at the network world
60．At the end of the book, Marcus Yallow ．
A．is supposed to be more irresponsible
B．becomes aware of very serious issues about his society
C．presents a young man who is irresponsible
D．plays a popular online game in real life
B
What makes a house a home?
Not size, of course．I've been in some of the grandest houses in America, and it's readily
apparent no one lives there．Earlier this year, I had dinner in a mud hut in Ethiopia, where we sat on chairs next to the hostess' bed -- a home that had more warmth than any house I've been in since．
Now John Edwards is exploring what makes a house a home in his just-released Home: The Blueprints of Our Lives．There Edwards writes, " This is a book about homes, the values they rest on, the dreams they are filled with, and the people they have shaped．The houses and circumstances are different, but much of what you find inside will be familiar．"
Whether you're sitting in an airport right now, waiting to fly to your childhood home for Thanksgiving, or in your own home waiting for the relatives to arrive, you know what he's talking about．
We've lived in our townhouse for 21 years．The loose windows that make noise in the wind．The fireplace so shallow it holds only one log．The kitchen window that offers a view of the world passing by．It's where friends sit on the kitchen counter drinking wine while dinner is being fixed．I lived there for only 18, but it will always be my true home．Even the lamp in the west living room window, which I could see far down the road when driving home late at night, still shines．
While all this talk about childhood memories can be warm and comforting, home is whom you're with, not where you are．As Edwards writes, "Home is family．Home is safety．Home is faith．"
Happy homecoming．
61．What would be the best title for the text?
A．Home Means Everything B．What's Inside Makes Us Feel at Home C．Home: The Blueprints of Our Lives D．The Importance of the Home 62．The purpose of the second paragraph is to __
A．mean the author likes living in grandest houses
B．prove the author got along well with the hostess
C．mean the feeling of home isn't related to the size
D．show the author's different feelings about houses
63．About the book Home: The Blueprints of Our Lives, we know that __
A．it was the description of Edwards' houses
B．it is mainly about houses
C．it helps us understand the concept of home
D．it was written by the author of the text
64．What did the author mainly mean when he mentioned the loose windows and the shallow fireplace ?
A．His house was too old to live in．B．He missed the feelings of home．
C．He hated living there．D．He missed his old friends too much．65．It can be inferred according to the text that __
A．the author's family were very rich B．every happy home is the same
C．the author has been living a hard life D．the author and Edwards hold similar ideas
C
A growing number of health, hunger, and sustainable （可持续的）agriculture groups today announced plans for Food Day-a nationwide campaign to change the way Americans eat and
think about food．Food Day will encourage people around the country to sponsor or participate in activities that encourage Americans to “eat real” and support h ealthy, affordable food grown in a sustainable, humane way．
Organizers hope Food Day will inspire Americans to hold thousands of events in schools, college campuses, houses of worship and even in private homes aimed at fixing America’s food system．A Food Day event could be as small as a parent organizing a vegetable identification contest at a kindergarten class-or as massive as a rally（集会）in a city park, with entertainment and healthy food．Health departments, city councils and other policy makers could use Food Day to launch campaigns, hold hearings, or otherwise address communities food problems．The campaign will advocate progress toward five central goals:
·Reducing diet-related disease by promoting healthy foods．The American diet is too low in fruits, vegetables, and whole grains and too high in fatty meat, soft drinks and salty packaged and restaurant foods-contributing to hundreds of thousands of premature deaths each year．·Supporting sustainable farms and stopping subsidies to agribusiness．Billions of federal
dollars a year would be better spent helping environmentally conscious family farmers than hugeagribusiness operations．
·Expanding access to food and alleviating hunger．Far too many Americans don’t know where their next meal is coming from, or have access to fresh produce in their neighborhood．·Reforming factory farms to protect animals and the environment．Farming of animals can and should be done without cruelty, and without degrading the quality of life．·Curbing junk-food marketing to kids．Food companies should not be targeting children with foods that promote tooth decay, obesity and other health problems．
66．What is the best title of the text?
A．Food Day Campaign B．Eat Real and Keep fit
C．How to Observe Food Day D．Food Problems in the USA
67．What can we learn from Paragraph 2?
A．Food problems are not easy to deal with．
B．Food Day events should be held in public places．
C．Kindergarten kids are unable to identify vegetables．
D．People are invited to create their own Food Day events．
68．One of the aims of Food Day is to ____．
A．target children with junk food B．operate more agribusiness
C．increase access to food D．cancel a series of events
69．The underlined word "curbing" in the last para graph is closest in meaning to “”．A．controlling B．enlarging C．evaluating D．providing 70．We can infer from the text that _____．
A．Food Day will not help preserve natural resources．
B．Food Day can be an opportunity to solve food problems．
C．Food Day has so far achieved all the central goals．
D．there are different ideas and views about Food Day．
D
The Weekly Telegraph is Britain’s global newspaper, the home-grown quality newspaper that delivers the best of The Daily Telegraph and The Sunday Telegraph to the British around the world and adds its special articles, features and reports designed to be of real value to foreign
readers．Telegraph．co．uk/expat, the website, increases the value of the newspaper, thus creating a complete expatriate（国外的）support system, both online and offline．
Order a gift subscription（订阅）for a friend or relation overseas this Christmas and they will begin to recogniz e what a useful investment your subscription represents, and you’ll receive a FREE bottle of 10-year-old Tawny Port to enjoy at home in the UK．
Subscriptions will start early January 2010．Port can only be delivered to a UK address and receivers must be over 18 years of age．
For more details or for 6-month subscriptions, please contact our subscriptions department on Tel +44 （0）1622 335080 or email weeklytelegraphsubs@telegraph．co．uk Office hours: 09:00-17:00 GMT）．
Please contact weeklytelegraphsubs@telegraph．co．uk with any questions regarding your subscription．
Your money back if you are not satisfied
Our “no quibble” money-back policy means that we guarantee to return the money for your subscription in full if you are not satisfied with the first four issues．
YOUR PAYMENT
Select a zone of payment．Price is for 52 issues．
United Kingdom 105．00 GBP （Great Britain Pound）
USA 125．00 GBP
Canada/ Australia/ New Zealand 108．00 GBP
Zambia/ Zimbabwe /Tanzania 85．00 GBP
South Africa 80．00 GBP
Middle East/ Europe/ Rest of the world 80．00 GBP
71．The Weekly Telegraph in the advertisement is mainly intended for ______．A．the British at home and abroad B．the British in the UK
C．the foreigners in Britain D．English learners across the globe 72．If you want to receive a free bottle of 10-year-old Tawny Port, you must ______． a．live in the United Kingdom b．have an overseas friend who is over 18
c．order a subscription of the Weekly Telegraph
d．offer your friend or relation’s address overseas
A．a, b B．c, d C．a, c D．b, c 73．What do we know about the Weekly Telegraph from the passage?
A．The content of it can’t be read onli ne．
B．One can subscribe to it 24 hours a day．
C．Your money can partly come back if you’re not satisfied．
D．The prices for different countries are probably different．
74．To order a 6-month subscription for a friend in Tanzania, you should ______．A．contact the subscriptions department
B．subscribe to the Daily Telegraph for a year
C．tell your friend to visit telegraph．co．uk/expat
D．pay 85．00 GBP
75．Which of the following statements is true based on the text?
A．Telegraph．co．uk/expat receives support from online readers only．
B．Subscriptions of the paper can be made starting from January 2010．
C．Telegraph．co．uk/expat mainly solve your subscription problems．
D．US and Middle East readers can enjoy equal price for 52 issues．
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）
阅读下面短文并回答问题，然后将答案写到答题卡相应的位置上（请注意问题后的字数要求）。
〔1〕Secondhand smoke is a byproduct of cigarette, cigar or pipe smoking．Secondhand smoke occurs when tobacco burns or when smokers exhale, and it is inhaled involuntarily by non-smokers．
〔2〕Secondhand smoke___________________．The first is called side stream smoke, which is the smoke released from the burning end of a cigarette or cigar, or from tobacco burning in the bowl of a pipe．The second is called mainstream smoke, which is exhaled by a smoker．〔3〕When nonsmokers are exposed to secondhand smoke, they inhale many of the same cancer-causing chemicals that smokers inhale．According to the U．S．Surgeon General, cigarette smoke contains more than 4,000 chemical compounds, including more than 50 cancer-causing chemicals, and at least 250 chemicals that are either toxic or carcinogenic．〔4〕Both side stream and mainstream smoke are dangerous to nonsmokers．Side stream smoke is generated at lower temperatures and under different conditions than mainstream smoke．As a result, it contains higher concentrations of many of the toxins found in cigarette smoke．
〔5〕Secondhand smoke has been designated as a known human carcinogen by the U．S．Environmental Protection Agency, the National Toxicology Program, and the International Agency for Research on Cancer．Secondhand smoke also is listed as an occupational carcinogen by the National Institute for Occupational Safety and Health．〔6〕According to the 2006 report by the U．S．Surgeon General, there is no risk-free level of exposure to secondhand smoke: even small amounts of secondhand smoke exposure can be harmful to people’s health．Separating smokers from nonsmokers, cleaning the air, and ventilating buildings can help．However, they cannot eliminate the exposure of nonsmokers to secondhand smoke．
76．What is the main idea of the text? （no more than 10 words）
77．Which sentence in the text is closest in meaning to the following one?
In whatever way, people can’t get rid of the risk of nonsmokers to secondhand smoke completely．
_______________________________________________________________________
78．Fill in the blank in Paragraph 2 with proper words．（no more than 8 words）
_______________________________________________________________________ 79．Name at least three ways that will help reduce the harm of secondhand smoke．（no more than 12 words）
_________________________________________________________________________ 80．Translate the underlined sentence in Paragraph 3 into Chinese．
______________________________________________________
第二节书面表达（满分25分）
假设你是李华，你的美国笔友Steven即将来北京学习汉语，发邮件请你给他介绍一本学习汉语
口语的书。你觉得网上热销的《汉语会话常用语》（Expressions in Chinese Conversation）适
合他。请根据提示，并增加必要信息，给他回复邮件。
词数：120—150。开头和结尾已给出，不计入总词数。
Dear Steven,
Yours,
Li Hua
参考答案
一、听力：
1—5 BCBAB 6—10 ABBCB 11—15 CCBAC 16—20 AABCA
二、单项选择：
21—25 BCDCC 26—30 BACBB 31—35 DDBCA
三、完形填空：
36—40CDBAD 41—45BCADB 46—50ACBDA 51—55CBCAD
四、阅读理解：
56—60BCCDB 61—65 BCCBD 66—70 ADCAB 71—75 ACDAB
五、阅读表达：
76．Secondhand smoke and its effect on non-smokers’ health
（关键词：Secondhand smoke，effect，non-smokers’ health）
77．However, they cannot eliminate the exposure of nonsmokers to secondhand smoke．78．is composed of /consists of/ is made up of two types of smoke
（其他答案合理者，可得分）
79．Separating smokers from nonsmokers；Cleaning the air；Ventilating buildings
（形式、大小写要一致，不一致扣掉一分）
80．当不吸烟的人吸二手烟时，他们吸入了很多和吸烟人一样的致癌物质。
六、书面表达：（One possible version）
Dear Steven,
I'm glad to hear that you're coming to Beijing to learn Chinese．
There are many books intended to learn Chinese, of which I think Expressions
in Chinese Conversation is a better choice．This book has been a best seller on the Internet in recent years．Most readers are satisfied with its accurate language and abundant contents．Besides, the book is quite suitable for beginners because it starts from the very beginning．What's more, it's convenient for you to learn by yourself with the tape contained in it．If you're interested in it, you can buy it via the Internet for 15 yuan and also available in Local bookstores in Beijing．Please contact me if you have any difficulty in finding the book．Wish you pleasure to China．
Yours,
Li Hua
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 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. 湖北省武汉二中2009届高三3月测试题 英语 第一部分听力（略） 第二部分英语知识运用（共二节，满分40分） 第一节：多项选择（共10小题，每小题1分，共10分） 从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。 21. Once you acquire the of always doing a little more than expected, your workmates will trust you with greater responsibilities. A. personality B. reputation C. character D. achievement 22. The programmes on New Year’s Eve have to to many different types of interest and taste among the public. A. satisfy B. cater C. apply D. attract 23. It is difficult for a teacher to give attention to children in a large class. We should reform the situation in order to meet each child’s needs. A. private B. personal C. individual D. single 24. It is rather that we still do not know how many species there are in the world today. A. misleading B. embarrassing C. boring D. demanding 25. It me that the murderer has escaped from prison. A. occurs B. indicates C. astonishes D. publishes 26. On her first day at school, the young teacher was deeply by the naughty boys. A. defended B. offered C. offended D. frightened 27. In this warm weather the ice will soon . A. spoil B. melt C. dissolve D. fail 28. She wants to find a job in the kindergarten because she working with children. A. adores B. admires C. dreams D. avoids 29. He was charged with a shotgun without a licence. A. possessing B. launching C. locating D. prohibiting 30. The young actress is very about her success; she says it’s as much the result of good luck as of her own abilities. A. crazy B. modest C. particular D. confident 第二节完形填空(共20小题，每小题 1.5分，满分30分) 阅读下面短文，掌握其大意，然后从31—50 各题后给的A，B，C，D四个选项中，选 出最佳选项，并在答题卡上将该项涂黑。 It was a bright spring afternoon when Freda told me she wouldn’t need me any more. I had just finished my four-hour work－31 up and down the stairs of her three-storey home cleaning the floor and washing the dishes. She was 32 jeans and a sweater, sitting at the 34 was going table I had just 33 , a pile of papers spread around her. Her husband’s to be reduced by thirty percent, and they were trying to live as if it had 35 happened. I felt sorry for her, but I also felt a sense of 36 . 37 an unexpected relationship I had been cleaning Freda’s house for five years and had with the family. It was not just 38 I had become an expert at scraping (刮掉) dirt stuck to their wooden floor, 39 that I had learned exactly how to place toys on the girls’ beds. It wa 【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. 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 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. 武汉二中2015-2016学年高一下学期期末英语试卷 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 My mother was a firm supporter of corporal punishment, but for all her talking she has never spanked(打屁股)my sisters, and me only once. Instead she found ways of punishment that left me a more lasting memory. One of the most memorable of these occasions occurred when I was four. That day mother picked me up early from daycare because we were going to Sears&Roebuck to pay on a Christmas Layaway. I was excited by the lights and decorations, and as we walked through the toy section on the way to the Layaway Department, I saw a toy I had to have. It was a white and red telephone whose bells rang as it was pulled along on a string. Looking lovingly up at my mother I ask ed, “Mama, can I have that telephone?” She replied, "Baby, not now, but if you are a good girl maybe Santa will bring it to you. " "But Mama, I want that telephone right now. " Her eyes narrowed and her hand tightened on mine. "Becky, you can’t have that telephone today, but if you misbehave you can have a spanking. " By now we were standing in the long Holiday line in the Layaway Department, and I figure it was now or never. I lay down on the ground and began screaming, "I want that telephone, " over and over again. Weary Christmas shoppers looked as my mother calmly said, "Becky, you better get up by the count of three or else. One…Two…Three. " Nothing. I was still in full tantrum. So then she lay down beside me on the floor, and began kicking and screaming, "I want a new car, I want a new house, I want some jewelry, I want…" Shocked, I stood up. "Mama, stop. Mama get up, " I tearfully requested. She stood, and brushed herself off. At first stunned, the others waiting in line began to clap, and before I knew it they were cheering and laughing and patting my mother on her back. She blushed and took a little bow and the next thirty minutes in line was pure misery for me as various parents leaving the Layaway Department, shake their heads at me and say with a smile, "Your mom got you good. I bet you’ll never try that again. " And I didn’t, because it left a lasting mental picture more effective then any physical mark. 21. From the second paragraph, we can know that . A. It was after Christmas B. I was very well-behaved C. I liked a red and blue telephone D. I was a primary school student 22. The underlined word “tantrum” can be replaced by . A. disappointment B. sadness C. bad temper D. excitement 23.Why did the mother scream together with her daughter? . A. She wanted to educate the girl B. She wanted to amuse others C. She wanted the girl to buy those things for her D. She wanted to embarrass the girl 24. What can be inferred from this passage? A. The mother has many fans on educating daughter. B. The mother hit the girl in the Department. C. The mother planned to buy the telephone when the girl first asked. D. The girl is still naughty after this experience. B Why are people interested in eating raw foods or whole foods ? One reason is that eating these types of food reduces the risk of acid accumulation (积累；堆积)in your body. Raw and whole foods are usually digested more than cooked and refined foods. When we cook foods, we destroy the natural enzymes(酶) that are part of the food in its raw form. These enzymes were intended by nature to help us digest the food. When we consume food without these natural enzymes , our bodies either digest the food improperly or allow too many nutrients to be absorbed into bloodstream. In both instances, the result is obesity. When too many nutrients are absorbed at once, the body grows fat. Improperly digested food moves slowly through the digestive tract, where it becomes increasingly acidic. To protect its vital organs from this acidic waste, the body changes the acid into fat and stores it safely away from the organs. Processed foods contain chemical elements, which might confuse the appetite mechanism that tells us when we’ve had enough to eat; as a result, people often overeat. Processed foods also upset the digestive cycle. The body will either 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 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） 2018—2019 学年上学期武汉二中期末考试高一英语试卷 试卷满分： 150分 第一部分：听力（共两节，满分30分） 做题时，先将答案划在试卷上。录音内容结束后，你将有两分钟的时间将试卷上的答案转涂到 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 buy for the woman? A. Notebooks. B. Paper. C. Pencils. 2.Where does the conversation take place? A. In a bookstore . B. In a library. C. In the woman’s office. 3.Why will Mr. Rogers be out of the office next week? A. To take a holiday. B. To attend a wedding. C. To travel on business. 4.What does the man mean? A. The woman can’t leave early. B. He will pick up the woman’s parents. C. Mr. Black won’t come at 4 o’clock. 5. What are the speakers talking about? A. A lift worker. B. The man’s sister. C. A lift accident. 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。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，各小题给 出5秒钟的作答时间。每段对话或独白读两遍。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
【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(附答案与解析)
湖北省武汉二中高三英语3月测试题
【最新】江西南昌二中高三上三模地理试卷
2019届江西省名校(临川一中、南昌二中)高三5月联合考英语试题Word版含答案
江西省南昌市第二中学2020-2021学年高一下学期第二次月考试题生物
2017-2018年江西省南昌二中高二(上)期末数学试卷(理科)及答案
2019届江西省名校(临川一中、南昌二中)高三下学期第二次联考英语试题(解析版)
武汉二中2015-2016学年高一下学期期末英语试卷
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
初中物理 江西省南昌市第二中学初中物理竞赛模拟考试题 考试卷及答案.docx
2018—2019学年上学期武汉二中期末考试高一英语试卷附答案
相关主题
文本预览