文档库 最新最全的文档下载
当前位置:文档库 › 江西省南昌市十所省重点中学命制2016届高三英语第二次模拟突破冲刺试题(七)

江西省南昌市十所省重点中学命制2016届高三英语第二次模拟突破冲刺试题(七)

江西省南昌市十所省重点中学命制2016届高三英语第二次模拟突破冲刺试题(七)
江西省南昌市十所省重点中学命制2016届高三英语第二次模拟突破冲刺试题(七)

南昌市十所省重点中学2016年二模突破冲刺交流试卷(07)

高三英语

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个小题:每小题1.5分,满分7.5分)

听下面5段对话。每段对话后有一道小题,从每题所给的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 are the two speakers talking about?

A. Different lifestyles.

B. Their hometowns.

C. A beautiful village.

2. What is the woman doing?

A. Waiting for her packages.

B. Placing orders.

C. Shopping downtown.

3. Where does the man work?

A. At a restaurant.

B. At a hotel.

C. At the airport.

4. What does the woman need?

A. Fruit and vegetables.

B. Fruit and meat.

C. Meat and yogurt.

5. Wh at does the woman think of the man’s plan?

A. It’s very relaxing.

B. It’s good for his he alth.

C. It may make him sick. 第二节(共15小题:每小题1.5分,满分22.5分)

听下面5段对话或对白,每段对话或对白后有几个小题,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,各小题给出5秒钟的作答时间。每段对话或独白读两遍。

听第6断材料,回答第6、7题。

6. Why is the woman calling the man?

A. To ask about homework.

B. To ask about today’s class.

C. To ask about Ernest Hemingway.

7. What do we know about A Day’s Wait?

A. It’s a novel.

B. It’s a short story.

C. It was newly written. 听第7段材料,回答第8、9题

8. What does the woman think is important?

A. A degree in business.

B. Work experience.

C. Family background.

9. Why doesn’t the man accept the woman’s offer?

A. He wants to find a better job.

B. He wants to work in London.

C. He’s already received job offers.

听第8段材料,回答第10至12题。

10. How old is the woman now?

A. 10.

B. 20.

C. 30.

11. What does the woman want to do?

A. Host a radio program.

B. Sing country songs.

C. Write country music.

12. What’s the man’s favorite music?

A. Classical.

B. Rock.

C. Blues.

听第9段材料,回答第13至16题。

13. How much did the man tip last time?

A. Five cents.

B. Ten cents.

C. Fifteen cents.

14. How much should customers usually tip at a restaurant?

A. 10 percent.

B. 15 percent.

C. 20 percent.

15. What does the woman find hard to accept?

A. Some people not giving any tips.

B. Bad tippers expecting quick service.

C. Some people not paying on purpose.

16. What is the woman planning to do?

A. Change a job.

B. Buy a car.

C. Tell people how to tip.

听第10段材料,回答第17至20题。

17. Where is the flight heading?

A. To London.

B. To Kentucky.

C. To New York.

18. When will the flight land?

A. At 9:50 am.

B. At 9:45 pm.

C. At 9:55 pm.

19. What time is it now?

A. 9:00 am.

B. 9:35 am.

C. 9:45 am.

20. What is not allowed during the flight?

A. Using a cellphone.

B. Using a laptop computer.

C. Smoking.

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)

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

A.

For any music lover, the Internet can be a never-ending source of music. We no longer need to fill a room with cassettes or DVDs. Online music stores are all the rage these days, with more and more people choosing to buy music online. We’re glad to offer you the best websites.

Apple’s iTun es Store is the most popular music store online today. It has sold more than 25 billion songs. It is also one of the most updated stores online, with even the latest albums finding their way to it within hours of their release. Most songs can be purchased for as little as $0.99. Website: https://www.wendangku.net/doc/2315829227.html,/iTunes/

Amazon MP3 is an arguable pioneer in bringing the best tracks at the cheapest prices to the customers. The songs can be purchased for as cheap as $0.69. What makes the deal even sweeter is that the tracks you purchase from the store can be easily transferred to the Amazon Cloud Drive for free. Website: https://www.wendangku.net/doc/2315829227.html,

Google Music now offers more than 13 million tracks. What makes it stand out from the rest of the competition is the fact that it lets you download DRM-free 320kbps mp3 files. It offers free cloud storage for all your purchases from the store. The tracks usually range from $0.99 to $1.29. The main disadvantage is that the store is currently not supported across most of the world. Website: https://www.wendangku.net/doc/2315829227.html,

E-Music is a popular name in the online music industry, with more than 17 million tracks on offe r. This is a membership-based service which starts at $11.99 per month for up to 24 tracks. It supports a large library of DRM-free tracks across most styles. The only major disadvantage for this service is that it isn’t available in most countries. Website: https://www.wendangku.net/doc/2315829227.html, There’s an absolute treasure trove(无主珍宝) of music waiting to be explored on the Internet.

All you need to do is access one of these amazing stores and get transported into another world. If you need any help, we can help you. For any help, click here.

21. The underlined part “all the rage” in Paragraph 1 probably means “”.

A. very popular

B. a bit expensive

C. totally reliable

D. rather inconvenient

22. If you want to buy your favorite tracks at the cheapest prices, you can visit ..

A. https://www.wendangku.net/doc/2315829227.html,

B. https://www.wendangku.net/doc/2315829227.html,

C. https://www.wendangku.net/doc/2315829227.html,/i’Tunes/

D. https://www.wendangku.net/doc/2315829227.html,

23. E-Music differs from other websites mentioned in the passage in that .

A. it offers the most popular tracks

B. it is available to users worldwide

C. it is only intended for its members

D. it covers all types of music worldwide

B

The St. Louis Post-Dispatch reported that the St. Louis Outlet Mall is expanding its restrictions on unaccompanied teenagers. In 2006, a parental-escort policy was established: on Fridays and Saturdays starting at 6 p.m., anyone under 17 that isn’t accompanied by a guardian who is at least 21 years old will be kicked out of the mall. It was around this time that other malls around the U.S. likewise banned unaccompanied teens during certain evening hours.

Starting from this Friday, the St. Louis Outlet Mall is pushing its parental-escort rule back to 3 p.m. on Fridays and Saturdays. Similarly, the Mall of America expanded its parental-escort policy during the recent holiday shopping season. Normally, the policy bans kids under 16 without guardians from 4 p.m. until closing time just on Fridays and Saturdays. But because of a fight in the mall involving dozens of young people that took place on Dec. 18, 2012---- a weekday, the policy was broadened to include peak 2013 holiday shopping hours, including Thanksgiving Day and all of the Christmas week.

Teen disturbances in other malls may cause more shopping centers to introduce or expand parental-escort policies. The Indianapolis Star noted that two incidents in 2013 in area shopping centers raised the possibility that Indianapolis malls might need to consider banning unaccompanied teenagers.

Obviously, such bans are aimed at stopping violence and other outbursts involving teenagers. More importantly, from a purely business perspective, these bans aim to attract shoppers who might otherwise be hesitant to go to the mall because of concerns about violence and outbursts involving teenagers. The restrictions allow mall security officers to systematically kick out a group of people that are considered to be loud, thuggish and bad for business overall. But they attract much criticism from online communities. Some argue that teens have the right to shop without a guardian. “Not all teens are disrespectful and troublemakers,” Pamela Chapman wrote. “In fact, it’s been my experience that most are good kids.”

Again, the biggest influence on stricter mal l policies for teens seems to be that they’re just plain good for business. Malls reported strong sales growth after they first carried out the policies six years ago. “We’ve had some success with the parental-escort policy, and families like shopping ou t here together,” the manager of the St. Louis Outlet Mall told the St. Louis Post-Dispatch. If there’s one rule in retail, it’s this---- if a small initiative proves successful in boosting sales, then it’s all but guaranteed that a larger initiative will follow.

24.What made malls restrict unaccompanied teenagers?

A.Teenagers’ disturbances.

B.Teenagers’ safety.

C.Limited holiday shopping hours.

D. Teenagers’ potential purchasing power.

25. What might be Pamela Chapman’s attitude towards the parental-escort policy?

A. Unconcerned.

B. Skeptical.

C. Opposed.

D. Positive.

26. The manager of the St. Louis Outlet Mall seemed to believe the parental-escort policy ______.

A. was temporary

B. helped increase sales

C. was unfair to teenagers

D. discouraged some families

27. What is the passage mainly about?

A. Violent incidents happening in St. Louis.

B. Malls’ bans on unaccompanied teens.

C. Security measures at American malls.

D. Parents’ duty to protect teenagers.

C

Following in the footsteps of Morgan Spurlock, who ate only McDonald’s food for one month in the film Super Size Me, an Australian man has undergone a sugar-heavy diet for 60 days to explore sugar’s impact on his health.

Within three weeks, the formerly healthy Gameau became moody and sluggish (迟钝的). A doctor gave him the shocking diagnosis: He was beginning to develop fatty liver disease. According to the Mayo Clinic, the most severe outcome for fatty liver disease is liver failure.

Gameau reportedly consumed 40 teaspoons of sugar per day, or slightly more than the average teenager worldwide. According to the American Heart Association (AHA), the average American consumes 20 teaspoons of sugar daily. The AHA’s daily recommendations for sugar consumption are 6 teaspoons for women and 9 teaspoons for men.

Doctors called Gameau’s mental functioning “unstable”, and the father-to-be reportedly put on nearly four inches of visceral (内脏的) fat around his waist. He was on the fast track to obesity. Gameau said his diet left him feeling hungry, no matter how much he ate. His final meal, which consisted of a juice, a jam sandwich, a bar, and a handful of other snacks, is similar to an ordi nary child’s school lunchbox. “Sadly, it was very easy to fit comfortably into the small plastic container,” Gameau wrote on his blog. “The last meal is for all the people out there, especially parents, who are led to believe they are doing the right and healthy thing for their children. They are making an effort, yet they are horribly let down by the lack of integrity in marketing and packaging strategies.”

Gameau told https://www.wendangku.net/doc/2315829227.html,.au that the experiment’s findings don’t suggest a need to completely cut sugar, but rather a need for more awareness about how much sugar has been added to healthy food.

28. What can we learn about Gameau from Paragraph 2 ?

A. He became mentally unstable after trying the diet.

B. He had complicated personality before he tried the diet.

C. He developed liver failure in the end because of the diet.

D. He knew the harm of the diet well at the very beginning.

29. What do the figures mentioned in Paragraph 3 mainly tell us?

A. Men usually consume more sugar than women.

B. Teenagers worldwide consume too much sugar.

C. Americans consume the most sugar in the world.

D. Adults should consume more sugar than teenagers do.

30. By comparing Gameau’s final meal to an ordinary child’s school lunchbox, the writer wants to show that _______.

A. school children often feel hungry at school

B. school children aren’t eating healthily at school

C. schools attach great importance to children’s diet

D. parents know very well what their children need to eat

31. What doe s the underlined word “integrity” in Paragraph 4 mean?

A. Observation.

B. Trust.

C. Honesty.

D. Patience.

D

Tiny monitoring devices have become an increasingly common way for scientists to study elusive animals that are difficult to track on a day-to-day basis. However, now it seems that smart seals have caught on to the trick and are using it to their advantage to catch fish!

To find out if that is true, a team of rese archers from the University of St. Andrews in Scotland selected a group of ten young grey seals that had neither encountered the ocean nor been exposed to any kind of acoustic(声音的) tags. The researchers then placed the seals one at a time, inside a pool that contained 20 foraging boxes, only two of which housed fish --- one with tags and the other without.

Each seal was allowed to explore the boxes twenty separate times. In order to ensure that mammal was not depending on its memory, the fish were moved to different boxes each time. At first, there was no difference in the amount of time it took the seals to discover the tagged and untagged fish. However, after they had been in the pool a few times, they started locating the tagged fish much faster.

To confirm that this indeed was the case, the researchers conducted a second experiment using two boxes --- one with pieces of fish and the other with just acoustic tags. Sure enough, the seals were all attracted to the one that was sending out signals.

While t his experiment involved only seals, the researchers believe that other marine mammals may also be using the information to catch prey. Sadly, predators like sharks that have been tagged by scientists may be negatively affected, as pings they emit could warn their prey of their presence. Besides potentially messing up nature’s food chain, the “dinner bell” effect of the acoustic tags could also mean that the conclusions reached by previous fish studies may not be correct. Now that the secret is out, scientists will have to come up with another way to conduct their studies --- one that is not detectable by the crafty marine animals.

32. What does the underlined part “the trick” in Paragraph 1 refer to?

A. Looking for ways to catch fish.

B. Following the sound that fish make.

C. Tracking sea animals on a day-to-day basis.

D. Attaching tiny monitoring devices to sea

animals.

33. After doing the two experiments, the researchers most probably concluded that ______.

A. it’s really easy for seals to find their prey

B. seals can be easily fooled by acoustic tags

C. seals can really make use of the acoustic signals to prey

D. seals are much cleverer than most of the other sea animals

34. The researchers seem to believe that sharks tagged by scientists ______.

A. may benefit from the tags

B. may find it hard to find prey

C. may attract seals by mistake

D. may be annoyed by the emitted pings

35. Which of the following shows the correct relation among the paragraphs?

A. ①/②③④/⑤

B. ①/②/③④⑤

C. ①/②③/④⑤

D. ①②③④/⑤

第二节(共5小题;每小题2分,满分10分)

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

How to make Quick Decisions For Your Life

We make decisions every day. 36 When it comes to making decisions, choosing the right one can at times be stressful, especially if the decision must be made quickly. Indecision often weighs us down, but there are some useful tips for making quick decisions more easily.

37 Sometimes the key to making a quick decision comes down to planning ahead of time for just such an occasion. We all know w e’re going to come to an important decision-making point sooner or later, so having a plan already in hand can put our mind at ease when that time comes. Overcome fear. 38 While it may seem difficult to overcome the fear of making the wrong choice, m any experts agree that we shouldn’t be afraid to make the wrong decision, even if it seems important. The vast majority of wrong decisions can be corrected, while delaying decisions can often lead to more problems.

Write down all the advantages and disa dvantages of your decision. Even if you don’t have all the information, writing down all the pros and cons(优缺点) is a good starting point for figuring out what to do. In cases where there simply isn’t enough time to write things down, make a mental list in your mind. Thinking of the pros and cons can help you organize your thoughts.

39

Determine criteria. Remember that every decision you make should come with a certain list of criteria. 40 But once you know the requirements you’re looking for, making a decision will become easier. Look for the choice that satisfies the list you’ve made, and once that cho ice is found, you should move ahead with it.

A.Have a plan.

B.The list may be short or quite long.

https://www.wendangku.net/doc/2315829227.html,municate your decision with others.

D.And this can always lead to a clear answer.

E.So cut out any options that you know you will not choose.

F.Often, one thing that keeps us from making decisions is fear.

G.Some can be very important while others are not serious in the long run.

第三部分英语知识应用(共两节,满分45分)

第一节完形填空(共20小题;每小题1.5分,满分30分)

阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项。“How does the yard look?” My father asked, with his eyes shining. I could tell he was eagerly waiting for my 41 . “Wonderful!” I replied after I gave it a thorough 42 . Then I recited all the changes I had 43 in his yard and he smiled contently.

When I was young, my mother 44 in a car accident, leaving my father alone to 45 their three young daughters. At the beginning, life was not always 46 and my younger sisters usually

complained. However, Dad always 47 us to believe that life was good. Meanwhile, he tried his best to 48 that belief.

In 1972, my dad developed a piece of waste land that had been 49 on Okaloos a Island. Every year at the first sign of 50 , he would begin spending countless hours working there to make it be bursting with colors. Through his continuous hard work, the land 51 turned into a beautiful garden with different types of flowers and other unique plants. While our friends were enjoying their vacation through traveling to different places, we were 52 working with my dad in his yard, watering the flowers, weeding or cutting off the branches. Sometimes, our friends were envious of our working vacation, and we would 53 them. Dad made his yard very 54 so that it became our vacation paradise during our childhood.

For so many years, when we were 55 , we liked to visit Dad’s yard, because it could 56 us of Dad’s belief. It was Dad and his yard that gave us 57 that enabled us to survive and 58 major challenges in life. One day, it shocked us that Dad said he would not 59 the yard. Then he explained, “Twenty years ago I decided to start my work in that yard to tell you life is good. Now my work is done.” We were sitting in 60 , recalling what we had experienced. Life was good. Dad was right.

41 A. excuse B. answer C. decision D. suggestion

42 A. clean B. suggestion C. inspection D. arrangement

43 A. discovered B. imagined C. achieved D. promised

44 A. gave up B. turned up C. ran away D. passed away

45 A. scold B. rescue C. raise D. persuade

46 A. smooth B. sorrowful C. wealthy D. lonely

47 A. forced B. allowed C. authorized D. encouraged

48 A. change B. prove C. understand D. criticize

49 A. abandoned B. advertised C. disappeared D. provided

50 A. spring B. summer C. autumn D. winter

51 A. suddenly B. gradually C. temporarily D. occasionally

52 A. impatiently B. carelessly C. happily D. unwil lingly

53 A. challenge B. invite C. accompany D. consult

54 A. unnecessary B. unreasonable C. disgusting D. extraordinary

55 A. low B. angry C. guilty D. confident

56 A. warn B. accuse C. inform D. remind

57 A. emotion B. strength C. choices D. opportunities

58 A. forget B. admit C. conquer D. create

59 A. continue B. sell C. challenge D. extend

60 A. safety B. despair C. doubt D. silence

第二节(共10小题;每小题1.5分,满分15分)

阅读下面材料,在空白处填入适当的内容(1个单词)或括号内单词的正确形式不得超过3个单词)。Travelling around the Sydney district is a wonderful experience.

The sightseeing options are 61 (end), but most travelers begin on the harbor at the Sydney Opera House. __62 (know) as one of the wonders of the world, it is a photographer’s dream.

There is a huge 63 (choose) of accommodations available in the city and its surrounding

area. Darling Harbor is famous for its restaurants and four-star hotels. Under the famous Sydney Harbor Bridge is the Rocks shopping district, which 64 (call) “the heaven of shoppers”. You can spend at least a half day 65__ (wander) through the alleys and side streets to take 66 everything the shops offer. On the other side of harbor __67 (lie) another must-visit spot, the Taronge Park Zoo. With an exciting collection of native animals, including lions and giraffes, 68 is rare to find a zoo with a view of Darling Harbor and the city skyline.

The Royal Botanic Garden is within walking distance of the Opera House, and is an absolutely perfect place for a picnic lunch. After lunch, take a walk to Sydney Tower, 69 you can get 360-degree 70 (forget) views of the city.

第Ⅱ卷

第四部分写作(共两节,满分35分)

第一节短文改错(共10小题;每小题1分,满分10分)

假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言

错误,每句中最多有两处。错误涉及一个单词的增加、删除或修改。

增加:在缺词处加一个漏字符号(Λ),并在其下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线,并在该词下面写出修改后的词。

注意:1. 每处错误及其修改均仅限一词;

2. 只允许修改10处,多者(从第11处起)不计分。

I loved reading stories when I was just a little kid. I’ve read thousand of stories since

I read my first story at five years old. But I had never considered write one by myself. One

day, I read an inspired article by a famous writer. In the article, he talked about how he started

writing, which encouraged him. Because of his words, I felt such enthusiastic about writing that

I decided to write a story. I always love animals, so I wrote adventure story about a little

boy who took adventures in a forest, where he met strange animals. Before I finished it, I sent

it to a newspaper, which published it. I was great encouraged. Now I had published a good many

of books.

第二节书面表达(满分25分)

你们学校正在进行英语演讲比赛,题目为“If I were…”。请你以此为题写一篇英语演讲稿,参加这次

比赛。

内容:

1.选择你喜欢的(一种职业、一个人物);

2.说明你的选择理由。

注意:

词数:100-120, 文章开头与结尾已给出(不计入总词数);

参考答案

1-5 BAACB 6-10 ABBCC 11-15 ABABB 16-20 BABBC

21-25ABCAC 26-30BBABB 31-35CDCBA

36-40 GAFDB

41-45: BCADC 46-50: ADBAA 51-55: BCBDA 56-60: DBCAD

61. endless 62. Known. 63.choice 64. is called 65. wandering

66. in 67.lies 68.it 69.where 70.unforgettable

I loved reading stories when I was just a little kid. I’ve read thousand thousands

of stories since I read my first story at five years old. But I had never

considered write one by myself. One day, I read an inspired article by a writing inspiring

famous writer. In the article, he talked about how he started writing, which

encouraged him. Because of his words, I felt such enthusiastic about writing

me so

that I decided to write a story. I always love animals, so I wrote ∧ adventure

an

story about a little boy who took adventures in a forest, where he met strange

animals. Before I finished it, I sent it to a newspaper, which published it.

After

I was great encouraged. Now I had published a good many of books

Greatly have

书面表达

Possible version:

Good morning, everyone,

I’m glad to stand here to give a speech. My topic today is “If I were a dustman”.

Perhaps you are surprised at my choice, but I do think being a dustman is a great choice. The

reason why I choose to be a dustman is that I want to make our city a more beautiful place to

live. If I were a dustman, I would make our city cleaner with no rubbish lying on the street.

I would tell others that we dustmen can also make a great difference to our society by performing

our jobs well.

No matter what you do, it is important that you do it well and it is worth doing as long as

you consider it valuable.

Thanks for your listening.

江西省南昌市第二中学最新高一上学期期末考试试卷生物 解析版

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

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

南昌的产生、发展及未来机遇

南昌的产生、发展及未来机遇 南昌凭借其江西中部偏北,赣江、抚河下游,鄱阳湖西南岸独特的地理中心位置和交通枢纽位置发展成为江西的省会。作为一个省会城市其发展和衰弱也与省份的经济情况息息相关,随着省内经济的发展而发展,衰弱而衰弱。 一、历史沿革及行政区划 南昌市因南方繁荣昌盛得名,又可称洪城、英雄城,是江西的经济、政治、文化、科技和交通中心,历史上也一直是地区的行政中心。南昌有两千两百多年历史,相传南昌城(汉豫章郡城)是汉高祖6年灌婴所建,城址在今南昌火车站东南约4公里的黄城寺,城周长十里八十四步。所以南昌城又被称为灌婴城。现代南昌是中国首批低碳试点城市,曾荣获国家创新型城市、国际花园城市、国家园林城市、国家卫生城市、全球十大动感都会等等荣誉,2006年被《新闻周刊》评选为世界十大最具经济活力城市。 截至2013年,南昌市下辖东湖区、西湖区、青云谱区、青山湖区、湾里区5个市辖区以及南昌县、新建县、进贤县、安义县4个县。其中市辖区下辖红谷滩新区、高新区、南昌经济开发区、小蓝经济技术开发区、桑海经济技术开发区、望城新区。共有29个街道、47个镇、33个乡,499个社区、1141个行政村;其中市辖区共有29个街道、10个镇、2个乡,389个社区、167个行政村。全市户籍总人口510.08万人,非农业人口235.96万人,常住人口518.42万人,出生率12.98‰,死亡率6.19‰,自然增长率6.79‰。 二、南昌的地理环境 南昌位于北纬28°10'至29°11'、东经115°27'至116°35'之间,地处江西中部偏北,赣江、抚河下游,鄱阳湖西南岸。南昌属于亚热带湿润季风气候,夏炎冬寒,雨热同期,夏季炎热有火炉之称。全境山、丘、岗、平原相间,其中水域面积达2204.37㎞2,占29.78%,在全国省会及以上城市中排在前三位。平原占35.8%,东南平坦,西北起伏,水网密布,湖泊众多。 南昌水网密布,赣江、抚河、玉带河、锦江、潦河纵横境内,湖泊众多,有军山湖、金溪湖、青岚湖、瑶湖等数百个大小湖泊,南昌市市区湖泊主要有城外四湖:青山湖、艾溪湖、象湖、黄家湖(含礼步湖、蝶子湖),城内四湖:东湖、西湖、南湖、北湖。城在湖中,湖在城中。南昌的5个市辖区就有3个名字里有“湖”字。 三、南昌的产生与发展与衰弱 提到南昌的城市发展就不能不提到赣江,赣江是长江的第七大支流,同时是江西省最大的河流。西源章水是出自广东省毗连江西赣州南部的大庾岭,东源贡水是出自江西省赣州市石城县的赣源岽,在赣州章贡区汇合称赣江,“赣”字即章贡两字的合写,赣江至鄱阳湖吴城进入长江。赣江流贯江西全省,长758公里,有大小支流2000多条,流域8.16万平方公里,为沟通江西省内运输、交通的大动脉,故江西也简称赣。赣江曾是连通长江水系和珠江水系的重要通道,是中原地区及长江流域与两广联系的重要水道,发达的商业使得江西省曾成为最发达的省区之一。 赣江是连接中原和东南沿海的重要水上路线,战略地位十分突出。故江西早期发展曾依托于战争。始皇二十六年(前221年),秦始皇正式开始对征服百越的大规模军事行动,大将尉唯率十余万人分东西两路进军百越,最终秦统一了闽东和岭南地区,也推动了这些地区的

江西省南昌市东湖区2019-2020学年七年级(下)期末考试数学试卷 解析版

2019-2020学年江西省南昌市东湖区七年级(下)期末数学试卷一.选择题(共8小题) 1.如图,用三角板作△ABC的边AB上的高线,下列三角板的摆放位置正确的是()A.B. C.D. 2.直角三角板和直尺如图放置,若∠1=70°,则∠2的度数为() A.70°B.30°C.20°D.15° 3.已知点P的坐标是(﹣2﹣,1),则点P在() A.第一象限B.第二象限C.第三象限D.第四象限 4.若二元一次方程组的解为,则m﹣n的值是()A.1B.2C.﹣D.3 5.《九章算术》有题曰:“今有五雀,六燕,集称之衡,雀俱重,燕俱轻.一雀一燕交而处,衡适平.并燕雀重一斤.问燕雀一枚各重几何?”其大意是:“现在有5只雀,6只燕,分别集中放在天平上称重,聚在一起的雀重燕轻.将一只雀一只燕交换位置而放,重量相等.5只雀、6只燕重量共一斤,问雀和燕各重多少?”古代记1斤为16两,则设1只雀x两,一只燕y两,可列出方程() A.B. C.D. 6.如图,这是王彬同学设计的一个计算机程序,规定从“输入一个值x”到判断“结果是否≥13”为一次运行过程.如果程序运行两次就停止,那么x的取值范围是()

A.x≥4B.4≤x<7C.4<x≤7D.x≤7 7.在党和国家的领导下,全国人民的共同努力,全国疫情进入尾声,各行各业纷纷复工复产,经济形势也越来越好.下列调查中,不适合用抽样调查方式的是() A.调查全国餐饮企业员工的复工情况 B.调查全国医用口罩日生产量 C.北京市高三学生全面复学,调查和检测某学校高三学生和老师的体温 D.调查疫情期间北京地铁的客流量 8.将一副三角板如图摆放,∠OAB=∠OCD=90°,∠AOB=60°,∠COD=45°,OM 平分∠AOD,ON平分∠COB,则∠MON的度数为() A.60°B.45°C.65.5°D.52.5° 二.填空题(共6小题) 9.赵师傅在做完门框后,为防止变形,如图中所示的那样在门上钉上两条斜拉的木条(即图中的AB,CD两根木条),这其中的数学原理是. 10.已知点M(2,﹣3),将它先向左平移2个单位,再向上平移4个单位后得到点N,则点N的坐标是.在△ABC中,∠C=55°,按图中虚线将∠C剪去后,∠1+∠2等于°.

【最新】江西南昌二中高三上三模地理试卷

【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

江西省南昌市八一中学2013-2104学年高二下学期期末考试生物试题

江西省南昌市八一中学2013-2104学年高二下学期期末考试生物试题 第一部分选择题 一、选择题(每小题只有一个正确答案,1—10每小题1分,11—25每小题2分,共40分。) 1、采用基因工程技术将人凝血因子基因导入山羊受精卵,培育出转基因羊。但是人凝血因 子只存在于该转基因羊的乳汁中。以下有关叙述,正确的是[ ] A.人体细胞中凝血因子基因编码区的碱基对数目,等于凝血因子氨基酸数目的3倍B.可用显微注射技术将含有人凝血因子基因的重组DNA分子导入羊的受精卵 C.在该转基因羊中,人凝血因子基因存在于乳腺细胞,而不存在于其他体细胞中 D.人凝血因子基因开始转录后,DNA连接酶以DNA分子的一条链为模板合成mRNA 2、如图为某哺乳动物生殖过程示意图(b为卵细胞)。下列相关叙述中不 正确的是[ ] A.动物个体①②的产生分别属于有性生殖和无性生殖 B.动物个体②的产生表明,高度分化的动物细胞核也具有发育成完整 个体的潜在能力 C.按照动物个体②的产生方式,后代的性别比例仍为1∶1,但这对于 动物的进化则是不利的 D.图中a、b、c三种细胞的产生方式,仅c为有丝分裂 3、下列关于生物专一性的叙述不正确的一组是[ ] A.酶具有专一性,一种酶只能催化一种或一类化学反应 B.基因工程操作中的载体具有专一性,一种载体只能运载一种特定的目的基因C.tRNA具有专一性,一种tRNA只能运载一种特定的氨基酸 D.细胞膜上的载体具有专一性,一种载体只能转运一种或一类物质通过细胞膜 4、下列关于生物工程技术的叙述中,正确的是[ ] A.用同一种限制酶分别作用于正常基因和它的突变基因,其结果可能不同 B.在离体植物细胞转变为愈伤组织的过程中体现了细胞的全能性 C.选取一定数量的B淋巴细胞进行增殖培养,即可获得有关的单克隆抗体 D.某种植物甲乙两品种的体细胞杂交后代与甲乙两品种杂交后代的染色体数目相同5、下列关于基因文库的说法中,不正确的是[ ] A.某果蝇X染色体上的所有基因组成的文库是部分基因文库 B.取出果蝇某细胞中全部mRNA,通过反转录产生的全部DNA片段称为该果蝇的基因组文库 C.cDNA文库中的基因可以在不同物种间进行交流 D.可以根据基因的碱基序列、基因的转录产物mRNA,以及基因的表达产物蛋白质等特性获取目的基因 6、既可用于DNA重组技术又可用于细胞融合技术的是[ ] A.病毒 B.纤维素酶 C.聚乙二醇 D.质粒 7、我国引进良种红安格肉牛后,使其快速繁殖使用的方法有[ ] ①发酵工程②组织培养③基因工程④克隆⑤细胞工程⑥体外受精和胚胎 移植 A. ①③ B. ②④ C. ④⑤ D. ④⑥ 8、在植物细胞工程的技术中,无需激素调节的是[ ]

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

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年江西省南昌二中高二(上)期末数学试卷(理科)及答案

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

2020年江西省南昌市东湖区农业银行考试真题及答案

2020年江西省南昌市东湖区农业银行考试真题及答案 一、选择题(在下列每题四个选项中选择符合题意的,将其选出并把它的标号写在题后的括号内。错选、多选或未选均不得分。) 1、下列属于批复的特点的是()。 A、下行性 B、针对性 C、结论性 D、及时性 【答案】ABCD 【解析】批复的特点: 1,下行性。批复仅能用于下行文。 2,针对性。批复是专为请示而设臵的文种,其主送机关是呈送请示的下级机关。 3,结论性。批复是针对请示问题的答复,只用作出结论即可,不必展开论述,内容较为简练。 4,及时性。上级机关批复下级机关的请示要迅速,以免耽误下级机关的工作进展。 2、吸收社会资本参与公共产品和服务的供给,有助于实现资源的最佳配置,下列属于社会资本参与公共产品和服务供给的是()。 A、民营企业对其厂区内的道路进行绿化 B、民政部门与企业共同出资建设养老院 C、某企业出资冠名体育赛事 D、外贸企业经批准开办大型超市 【答案】B 【解析】B项中的民政部门吸收企业共同出资建设养老院,是社会资本参与公共产品和服务的供给体现,符合定义。A项对厂区道路绿化,错误。C、D项中的体育赛事和大型超市均不属于公共产品和服务供给,错误。故选B。 3、人类选择月球作为探索宇宙星际航行的第一站的主要原因是()。 A、探索月球的危险性小 B、月球上富含地球上稀缺的矿种,且分布广泛 C、月球是地球的卫星,是距离地球最近的天体 D、月球上有高真空、强辐射和失重环境,这是将来加工工业的理想场所 【答案】C 【解析】人类选择月球作为探索宇宙星际航行的第一站的主要原因是月球是地球的卫星,是距离地球最近的天体。

4、古人信奉“五德终始说”,认为朝代与金、木、水、火、土五行相对应,朝代更替源于五行相克。周朝尚红色、属火,那么秦朝尚黑色、属()。 A、金 B、木 C、水 D、土 【答案】C 【解析】五行相克的次序是:金克木、木克土、土克水、水克火、火克金。周属火,秦克周,根据五行相克“水克火”,故秦承水德,因此C项正确。 5、下列选项中,能够表现出商品是使用价值与价值的统一的是()。 A、商品能够满足人们的所有需要 B、商品的任何价值都体现在人类的无差别劳动中 C、使用价值是价值的物质承担者,没有使用价值的东西不可能有价值 D、对于生产者而言,商品的使用价值和价值必须同时兼得 【答案】C 【解析】使用价值和价值统一于商品之中,缺一就不成其为商品。使用价值是价值的物质承担者,没有使用价值就没有价值。故选C。 6、俗话说:“冬练三九,夏练三伏”。这是说勤奋的人在最冷的“三九天”和最热的“三伏天”里都坚持锻炼。下列不是“三伏天”最热的原因的是()。 A、地面辐射增温 B、太阳光直射 C、空气湿度大 D、晴朗少云 【答案】B 【解析】夏至是一年中白天最长、阳光最接近直射的日子,但由于夏至时,地表湿度较小,地面吸收的热量晚上会散发一大部分,所以并不是最热。而进入伏天以后,地表湿度变大,每天吸收的热量变多,散发的热量变少,地表层的热量会累积下来,所以一天比一天热,进入三伏,当地面积累热量达到最高峰,天气也就最热了。另外,夏 7、昔日小汽车只是一种奢侈品,而今天已经进入普通百姓家。其根本原因是()。 A、个别劳动生产率提高,商品价值量降低 B、社会劳动生产率提高,价值总量降低 C、商品供大于求,价格降低

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

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

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

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)

2017年江西省南昌市2017年中考数学试卷及答案

机密★2017年6月19日 江西省南昌市2017年初中毕业暨中等学校招生考试 数学试题卷 说明: 1.本卷共有六个大题,26个小题,全卷满分120分,考试时间120分钟. 2.本卷分为试题卷和答题卷,答案要求写在答题卷上,不得在试题卷上作答,否则不给分. 一、选择题(本大题共12个小题,每小题3分,共36分)每小题只有一个正确选项. 1.下列各数中,最小的是( ). A. 0 B. 1 C.-1 D. 2.根据2017年第六次全国人口普查主要数据公报,江西省常住人口约为4456万人.这个数据可以用科学计数法表示为( ). A. 4.456×107人 B. 4.456×106人 C. 4456×104人 D. 4.456×103人 3.将两个大小完全相同的杯子(如图甲)叠放在一起(如图乙),则图乙中实物的俯视图是( ). 4.下列运算正确的是( ). A.a +b =ab B. a 2·a 3=a 5 C.a 2+2ab -b 2=(a -b )2 D.3a -2a =1 5.下列各数中是无理数的是( ) 6.把点A (-2,1)向上平移2个单位,再向右平移3个单位后得到B ,点B 的坐标是( ). A.(-5,3) B.(1,3) C.(1,-3) D.(-5,-1) 7.不等式8-2x >0的解集在数轴上表示正确的是( ). 8. 已知一次函数y =x +b 的图象经过第一、二、三象限,则b 的值可以是( ). A .-2 B.-1 C. 0 D. 2 9.已知x =1是方程x 2+bx -2=0的一个根,则方程的另一个根是( ). A .1 B.2 C.-2 D.-1 10.如图,在下列条件中,不能..证明△ABD ≌△ACD 的是( ). A.BD =DC , AB =AC B.∠ADB =∠ADC ,BD =DC C.∠B =∠C ,∠BAD =∠CAD D. ∠B =∠C ,BD =DC 11.下列函数中自变量x 的取值范围是x >1的是( ). A. y = B.y = C. y D. y = B. C. D. A. 第7题 图甲 图乙 第3题 A. B. C. D.

南昌市东湖区区情介绍

东湖区区情介绍 东湖区,隶属于,位于中心城区,是江西省政治、经济、商业、交通、文化、教育、科技、信息、医疗卫生的中心。东湖区面积为18.35平方公里,下辖、、、、、、、、等9个街道办事处和。2013年,东湖区总人口为44.64万人。区人民政府驻叠山路136号。 东湖区内驻有省、市党政军领导机构及中央、省部属单位,并驻有江西师范大学、江西医学院等高等院校。 2013年,东湖区全区地区生产总值达404.13亿元,按可比价计算,同比增长9.6%。[1] 东湖区地处东北部,东经115°1′-35′,北纬28°40′-44′之间,区划调整后的东湖行政区域呈不规则扇面,东以北京西路与洪都大道的交会点、洪都北大道、青山湖西岸线、青山北路、青山湖闸与富大有堤交会点为界;南以北京西路、八一广场南端、八一大道、中山路、中山桥、中山西路为界;西、北均以赣江南航道中心线为界。地势西南高,东北低,最高海拔27.2米,最低16.4米。气候为盆地气候。 2013年,东湖区总户数135088户,总人口458192人,其中:男性229787人;女性228405。非农业人口450402人,农业人口7790人。出生人口4133人,出生率为7.72‰,自增率为3.94‰,计划生育率为91.51%,出生婴儿性别比为103.7,综合节育率为92.33%,晚婚率

88.7%。[3] 一、区划详情 东湖区下辖、、、、、、、、等9 个街道和,共86个社区居民委员会,17个家委会,6 个村委会。[4] 二、经济 2008年-2011年,美特斯邦威、沃尔玛、曼图林业、五矿国际、汇益通等90家企业的地区总部先后落户东湖区。如今,东湖区商业楼宇总面积已突破60万平方米,入住楼宇企业超过1200家。金融保险、软件研发、货运物流、中介等现代服务业企业已成为东湖区现代服务业的经济平台,构筑起东湖区域经济的支柱。 东湖区已基本形成了中央商务圈、文化旅游观光圈、娱乐休闲圈、现代服务休闲娱乐圈和时尚购物带、金融服务带、商务休闲风光带、景观商业带等“四圈四带”的产业布局,实现了商业街到商业区的转变。2010年,全区第三产业占GDP的比重由前几年的83.9%提高到96%以上,经济发展质量位居全省前列。 2011年,东湖区引进了外资企业60家,其中世界500强企业3家,500万美元以上的项目20个;引进内资企业449家,5000万元以上的项目12个。同时,还成功引进了全省首家外资银行—英国渣打银行,结束了我省无外资银行的历史。

江西省南昌市八一中学麻丘高级中学等六校2020_2021学年高一数学上学期中联考试题 1

江西省南昌市八一中学、麻丘高级中学等六校2020-2021学年高一数学上学期 期中联考试题 一、选择题(本大题共12小题,每小题5分,共60分) 1.若{}R x x y y P ∈==,2,(){} R x x y y x Q ∈==,,2,则必有( ) Q P A =. Q P B ?. Q P D ?. 2.已知映射()():,2,2f x y x y x y →+-,在映射f 下 的原象是( ) A. B. ()1,1 C. D. 3.下列各组函数中,表示同一函数的是( ) ()()x x x x g x x f A -= -=21.与 ()() ()x x g x x x f B ==与2 2 . ()()x a a x g x x f C log .==与 ()()n n x x g x x f D ==与. 4.把函数23y x =的图像关于x 轴对称向下翻转,再右移14个单位长度,下移1 3 个单位长度,得到函数图像的解析式为( ) A.2113()43y x =--- B.2113()43y x =-- C.211 3()43y x =-+- D.2113()43 y x =+- 5.集合,集合 则( ) A.[-2, 3) B. [-2, 3) C. D. [-1, 3) 6.已知5log 7.0=a ,5 7.0=b ,7 .05=c ,则的大小关系是 ( ) A . B . C . D . 7.集合{} R x x x x ∈=,2100的真子集的个数为 A.2 B. 4 C.6 D. 7 8.函数()1++=x e x f x 零点所在的区间是 ( ) A .()1,0 B .()0,1- C .()1,2-- D .()2,1 9.德国著名数学家狄利克雷在数学领域成就显著.19世纪,狄利克雷定义了一个 “奇怪的函数”,,其中R 为实数集,Q 为有理数集.则下列说法正确是( ) A. B.函数是奇函数 C. ∈?21,x x C R Q,()()()2121x f x f x x f +=+恒成立 D. 函数 不能用解析法表示 10. 已知函数21(1)3,(1) (), (1)x a x ax a x f x a x -?-++≥=?

2020届江西省南昌市第二中学高三下学期高考模拟检测(三)理综物理试题及答案

绝密★启用前 江西省南昌市第二中学 2020届高三毕业班下学期高考模拟检测(三) 理综-物理试题 14.如图所示,涉及物理学史上的四个重大发现,其中说法正确的是 A.库仑利用图甲实验精确测出了元电荷e 的值 B.法拉第利用图乙实验,发现了电流周围存在磁场 C.伽利略根据图丙理想斜面实验,提出了力不是维持物体运动的原因 D.牛顿利用图丁实验,总结出:自由落体运动是匀变速直线运动 15.如图所示的电路由一小型发电机供电,该发电机内的矩形线圈面积为S=0.2m2、匝数为N=100 匝、电阻为r=2.5Ω,线圈所处的空间是磁感应强度为 B= 2 2πT的匀强磁场,线圈每秒钟绕垂直于磁场的轴匀 速转动10圈。已知与变压器原、副线圈相连的定值 电阻阻值分别为R1=5Ω,R2=20Ω,变压器为理想变压 器,两电表均为理想电表,R1和R2消耗的功率相等。则 A.通过原线圈的电流方向每秒钟改变10次 B.原、副线圈的匝数之比为2:1 C.电压表的示数为160V D.发电机输出的总功率为2560W 16. 2019年中国女排成功卫冕世界杯.如图所示,某次训练中,一运动员将排球从A点水平击出, 球击中D点;另一运动员将该排球从位于A点正下方且与D等高的B点斜向上击出,最高点为C,球也击中D点,A、C高度相同.不计空气阻力.下列说法 正确的有 A.两过程中,排球的初速度大小可能相等 B.两过程中,排球的飞行时间相等 C.后一个过程中,击中D点时重力做功的瞬时功率较大

D.后一个过程中,排球击中D 点时的速度较大 17.如图所示,在y >0的区域内存在方向垂直于纸面向里的匀强磁场 B 1在y <0的区域内存在方向垂 直于纸面向外的匀强磁场B 2,磁场B 2的磁感应强度大小是磁场 B 1的2倍,一带负电的粒子(重力不计)从y 轴上P (0,h )点以某一速 度沿x 轴正方向射入磁场B 1,若第一次经过x 轴时的横坐标为 3h ,则粒子第三次经过x 轴时的横坐标为 A. 33h B 732 h C. 43h D. 93h 18.宇航员飞到一个被稠密气体包围的某恒星上进行科学探索。他站在该恒星表面,从静止释放 一个质量为m 的物体,由于气体阻力,其加速度a 随下落位移x 变化的关系图象如图所示。 已知该星球半径为R ,万有引力常量为G 。下列说法正确的是 A.该恒星的平均密度为G R a 430 B.该恒星的第一宇宙速度为R a 0 C.卫星在距该恒星表面高h 处的圆轨道上运行的周期为03)(4a h R R +π D.从释放到速度刚达最大的过程中,物体克服阻力做功2 00x ma 19.如图所示是氢原子的能级示意图,一群处于 n=3 能级的氢原子在自发跃迁时会辐射一些光子, 用这些光子照射逸出功 2.25eV 的钾,普朗克常量 h=6.63×10-34J·s 。 则以下说法正确的是 A.波长为 60nm 的伦琴射线能使处于基态的氢原子电离 B.金属钾表面所发出的光电子的最大初动能为 9.84eV C.这群氢原子能发出三种不同频率的光 D.氢原子辐射光子后其核外电子动能变小 20.如图甲所示,绝缘水平面上存在方向水平向右的匀强电场,一带电物块以一定的初速度从O 点开始向右运动。取O 点为电势零点,该物块的 电势能与动能之和E 总、电势能E P 随它离开O

2019-2020学年江西省南昌市东湖区七年级(上)期末数学试卷 (解析版)

2019-2020学年江西省南昌市东湖区七年级(上)期末数学试卷一、选择题(共6小题). 1.(3分)下列图形中,棱锥是() A.B. C.D. 2.(3分)如图,正方体的平面展开图,每个面上都标有一个汉字,与“中”字相对的面上的字为() A.宜B.居C.城D.市 3.(3分)某市为提倡节约用水,采取分段收费.若每户每月用水不超过20m3,每立方米收费2元;若用水超过20m3,超过部分每立方米加收1元.小明家5月份交水费64元,则他家该月用水()m3. A.38B.34C.28D.44 4.(3分)如图,与∠1是同旁内角的是() A.∠2B.∠3C.∠4D.∠5 5.(3分)若关于x的方程(m﹣2)x|m|﹣1+3=0是一元一次方程,则m值为()A.﹣2B.2C.﹣3D.3 6.(3分)《九章算术》中有一道阐述“盈不足术”的问题,原文如下:今有人共买物,人出八,盈三;人出七,不足四.问人数,物价各几何?译文为:现有一些人共同买一个物品,每人出8元,还盈余3元;每人出7元,则还差4元,问共有多少人?这个物

品的价格是多少?设这个物品的价格是x元,则可列方程为() A.8x+3=7x+4B.8x﹣3=7x+4C.=D.= 二、填空题(共6小题). 7.(3分)若代数式2x2﹣4x﹣5的值为7,则x2﹣2x﹣2的值为. 8.(12分)计算: ①33°52′+21°54′=; ②18.18°=°′″. 9.(3分)如图是一个正方体纸盒的展开图,当折成纸盒时,与数11重合的数是. 10.(3分)一列方程如下排列: =1的解是x=2, +=1的解是x=3, +=1的解是x=4, … 根据观察得到的规律,写出其中解是x=6的方程:. 11.(3分)一个两位数,个位数字与十位数字的和是9,如果把个位数字与十位数字对调后所得的新数比原数大9,则原来的两位数为. 12.(3分)从点O引出三条射线OA,OB,OC,已知∠AOB=30°,在这三条射线中,当其中一条射线是另两条射线所组成角的平分线时,则∠AOC=° 三、解答题(共11小题) 13.(8分)(1)计算:11°23′26″×3; (2)解方程:. 14.(4分)已知点A、B、C在同一条直线上,且AC=5cm,BC=3cm,点M、N分别是AC、BC的中点. (1)画出符合题意的图形;

相关文档
相关文档 最新文档