哈师大附中、东北师大附中、辽宁实验中学2014届下学期高三年级第二次联合模拟考试数学试卷(理科,有答案)
(东三省三校)哈师大附中、东北师大附中、辽宁省实验中学2014年高三第二次联合考试物理答案
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三校第二次模拟考试物理试题答案22、1.035 1.195(±0.002)(每空3分,共6分)23、乙(2分);22111U R N NR U =;(2分) (连线3分)N :V 1的总格数,N 1:V 1的读出格数,U 2:V 2的读数,R 1:待测表内阻,R 2:V 2表内阻。
(两个表内阻可以用150和30代替)(2分)24、(共14分))12(1.6)11(2)10(2)9(8.0)8(/530sin )7(5.0)6()5(2)4(64)3(2)2(/2)1(4321142322221211122s t t t t t t s a v t s a v t s m mmg a s t vt x x L x s av t m m x ax v s m a ma mg f =+++==∆==∆====∴=-===<=====总总返回传送带向右减速上升和下降时间在斜面上设达到共速μ (1)(3)各2分,其他每点各1分,总分14分25、(共18分)解析:(1)设粒子经PT 直线上的点R 由E 2电场进入E 1电场,由Q 到R 及R 到M 点的时间分别为t 2与t 1,到达R 时竖直速度为v y ,则:由F qE ma == 。
(1)2L= v 0t 2 。
(2)L= v 0t1。
(3)22221t mq E L = ∴ qL mv E 201= 。
(4) A1122t mq E t m q E v y == 21121t mq E MT =。
(5) 上述三式联立解得: L MT 21=。
(6) (4)(5)各2分,其他各1分,共8分(2)欲使粒子仍能从S 孔处射出,粒子运动的半径为r ,则rmv qvB 20=。
(7) ()1122n r a += 21,=n 。
(8) 解得:02(12)mv n B qa+= 21,=n 。
(9) 由几何关系可知T n T T n t )213()622(3+=+⨯⨯=。
东北三省三校2014届高三历史第二次联合模拟考试题新人教版
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东北三省三校2014年高三第二次联合模拟考试(哈师大附中、东北师大附中、辽宁实验中学)文综历史试题第Ⅰ卷本卷共35小题。
每小题4分,共140分。
在每小题给出的四个选项中,只有一项是符合题目要求的。
24.甲骨文有以形表意的特征。
图7中的“城”字中间的方形小框,表示四周的城墙,表示城楼,为士兵守护之意;“邦”字下边的“田”字,代指疆域土地,上半部分的象形符号,是标示疆界范围的界标。
从这两个字的结构和含义可以看出,“城邦”的含义和主要功能是“城”“邦”图7A.一定区域范围内统治管理中心B.具有对外防御能力的军事基地C.强化农业生产为主的经济中心D.土地和军队是国家财富的来源25.江南土豪从汉魏以来既已存在,并随着江南经济的进步而有较大规模的发展,在刘宋时期他们中就不乏“献私财数十万”以求升进者,但迄至梁末,他们并不能“预于南朝大政”,究其原因A.军功授爵排斥纳粟拜爵B.唯才是举一定程度规避门阀士族C.新兴地主缺乏武装力量D.九品中正制形成僵化的门阀制度26.据《建炎以来系年要录》记载:宋高宗谕大臣……曰“广南市舶(市舶司,为掌管海外贸易征税、管理外商及收购舶来物货的官署),利入甚厚,提举官宜得人而久任。
”据此可知宋代A.外贸收入用于国计民生B.外贸税收成为政府财政主要来源C.市舶事务需要专人掌管D.广州成为最主要的对外贸易口岸27.“商籍农而立,农赖商而行,求以相辅,而非求以相病……遁其有无,官民农商,各安其所而乐其生,夫是以为至治之极”。
与此观点相似的是A. “黄金珠玉,饥不可食,寒不可衣”B. “生民在勤,所宝惟谷”C. “工农商虞本为一体,皆富民之政”D. “国以人为本,人以衣食为本”28. 马克思曾说:“英国的入侵……摧毁了印度原有的经济基础,解构了那些半野蛮半原始的社会结构……虽然对此我们会心怀悲伤,但是我们一定不能忘记,正是这些看起来平和的田园牧歌式的乡村社会结构构成了东方专制主义最坚实的基础,它极大地禁锢了人类的思想。
哈师大附中、东北师大附中、辽宁实验中学2014届下学期高三年级第二次联合模拟考试文综试卷(有答案)
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哈师大附中、东北师大附中、辽宁实验中学2014届下学期高三第二次联合模拟考试文综试卷,有答案第Ⅰ卷本卷共35小题。
每小题4分,共140分。
在每小题给出的四个选项中,只有一项是符合题目要求的。
读图1“黑龙江省人口出生率、死亡率比较图(单位:‰)”,回答1~3题。
图11.黑龙江省的人口自然增长率与全国同期相比差异最小的年份是A.2012年B.2010年C.2000年D.1995年2.目前,黑龙江省人口自然增长的特点是A.人口增长模式为“高-低-高”B.总量呈下降态势C.总量呈零增长态势D.总量呈增长态势3.我国于2013年底推出了“单独二孩”政策,该政策实施带来的影响可能是①出生率趋于回升②老龄化程度降低③死亡率趋于上升④公共资源压力增大A.①②③B.①③④C.①②④D.②③④近年来,许多国家纷纷把构建低碳城市作为提升城市乃至国家竞争力的重要手段。
截止到2011年11月,我国正在规划建设的低碳城市,已经形成四大区域集聚发展的格局,读图2“中国低碳城市分布图”,回答4~5题。
图24.关于图2中低碳城市的叙述,正确的是A.实现低碳经济的途径有差别B.均位于经济发达的地区C.所在地区能源矿产十分丰富D.重化工业所占比重较大5.重庆市在建设低碳城市中应重点发展的是A.低碳建筑B.低碳生活C.低碳工业D.低碳交通近年来,我国三大谷类粮食已全部进入净进口时代,使得我国粮食对外依存度上升的风险加大。
图3为2013年1~5月中国稻米主要进口国及其所占比重。
据此回答6~7题。
图36.在中国的主要稻米进口国中,越南比重最高的主要原因是A.质量最优良B.商品率最高C.总产量最大D.价格优势最明显7.要降低我国粮食对外依存度上升的风险,我们应该①扩大粮食种植面积②通过政策手段有效调控③发展科技,增加单产④减少粮食加工企业的数量A.①②B.②③C.③④D.①④图4为“某地一处完全淹没在海面下的珊瑚礁体的等深线示意图”。
读图4,回答8~9题。
东北三省三校2014届高三第二次模拟考试英语试题及答案
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东北三省三校2014年高三第二次联合模拟考试(哈师大附中、东北师大附中、辽宁实验中学)英语试题第二部分: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中(A、B、C和D),选出最佳选项,并在答题卡上将该项涂黑。
AI’ve often wondered if I might do more good as a travel agent rather than as a psychologist. It seems that I have been more dramatically affected by certain kinds of travel experiences than I ever have.My trip to Iceland is a fine example of that. The plan was to spend two days in a remote mountain hut in Iceland. I was working on a photographic book about winter in Iceland and needed to capture images of this amazing region of high mountain peaks, smoky volcanoes, and lakes with floating icebergs.The moment after we arrived, the weather turned extreme making visibility impossible. It snowed so much and the wind bl ew so hard that we couldn’t leave the tiny hut. To stay warm, we walked around in circles much of the day inside the tiny hut. We tried to call for help but the radio did not work. Day after day, we watched our supplies of food and fuel grow dangerously short. We got acute cabin fever (幽居病) and started going for walks and ski expeditions outside. Even when the weather finally broke, nobody came to get us even though it was three days beyond our scheduled pickup. By the time the rescue team came to pull us out, we had all given up hope.From then on, the world looks different to me, as does my life. It would have taken me years of psychotherapy to get to the same point.Almost everyone has a story to tell, and interestingly, most of these experiences were not altogether pleasant at the time. In fact, it appears that the most constructive life-changing journeys were those that involved some sorts of awful and uncomfortable events that forced the person to develop new resources, increase confidence, and solve problems in new ways.21. The writer went to Iceland to ______.A. enjoy the natural beautiful floating icebergsB. take photos about the region for a bookC. collect materials for psychological researchD. challenge the high mountains there22. During the trip in Iceland, those travelers faced difficulties EXCEPT that ______.A. they got lost in the mountainB. they were short of food and fuelC. they couldn’t see the surroundings clearlyD. they failed to get in touch with the rescue team23. From Paragraph 3, we learn that the travelers ______.A. were in despair before they were rescuedB. stayed in the hut for three days altogetherC. got sick because of going for ski outsideD. got rescued immediately the weather turned fine24. Which of the following statements is true according to the passage?A. The writer is a travel agent who loves difficult challenges.B. In Iceland the weather is always extreme and it snows a lot.C. The travellers were so depressed that they needed psychotherapy.D. Awful journeys may become life-changing events that inspire people.BOne of India’s top engineering schools has restricted Internet access in its boarding houses, saying addiction to surfing, gaming and blogging was affecting students’ performance, making them lonely and even suicidal.Authorities at the best Indian Institute of Technology (IIT) in Mumbai said students had stopped socializing and many were late for morning classes or slept through them. “Now, a student doesn’t even know who lives two doors away from him because he is so busy on the Internet,” said Prakash Gopalan, dean of Student Affairs. “The old dormitory culture of companionship and socializing among students is gone. This is not healthy in our opinion.”IIT-Mumbai, with about 5,000 students, is one of the seven IITs across India which are considered to be among the finest engineering schools in the world. They are also a talent pool for global technology giants. But their hard courses, tough competition and lonely campus lifestyle have taken an effect on students. Depressive and dysfunctional lifestyles are known to be common among IIT students, and at least nine have committed suicide inthe past five years. Students have unlimited free Internet access in their boarding houses to help them in their studies, but many also use it to surf, chat, download movies and music, blog and for gaming.“Starting Monday, Internet access will be banned between 11 p.m. and 12:30 p.m. at IITMumbai’s 13 boarding buildings to encourage students to sl eep early and to try and force them out of their shells.” Gopalan said. But the move has not gone down well with students who say they hate their lives being regulated. “Now they will say we need to listen to a lullaby (摇篮曲) to go to sleep.” said Rajiv, an electronics student.25. According to the text, the students addicted to the Internet in IIT-Mumbai are likely to ______.A. perform well in studiesB. participate in social activitiesC. know their classmates betterD. feel lonely and even suicidal26. The underlined word “dysfunctional” in Paragraph 3 most probably means “______”.A. unpopularB. meaningfulC. abnormalD. exciting27. What measures have been taken in IIT-Mumbai?A. Students must go to bed before 11 p.m.B. Students are forbidden to surf the Internet on campus.C. Students have unlimited free Internet access in their dormitories.D. Internet access is unavailable in deep night in boarding buildings.28. We may infer from the last paragraph that ______.A. all electronics students hate the banning orderB. some students complain about the banning orderC. there is no Internet access on the IIT campus ever sinceD. more students prefer listening to music to surfing the InternetCWell, parents, surprise! Lots of us are using Twitter and Facebook to thumb rides, and not just to school. It’s awkward to be refused when you call a friend and ask for a ride. But with Twitter, you just look for other people heading the same way.It may sound risky, so many teens stay wi thin their own social circles to find rides, and don’t branch out beyond friends when asking on Twitter just like me, but to some young people, especially those taking longer trips, stranger danger is less of a concern.“I think the digital connection of y oung people is really key, because younger generations grew up sharing things on line, sharing files, photos, music, etc, so they’ve been very used to sharing,” said Juliet Schor, a sociology professor at Boston College.The sharing economy got big during the recession (经济衰退), allowing people to access more goods, services using technology and even to share costs. And that technology, for me, is what the car was for my mom, a gateway to more freedom, like what my friend Earl says, “The symbol of freedom isn’t the car any more because there’s technology out there connecting you to a car.”According to the researchers at the University of Michigan, 30 years ago, eight in ten American 18-year-olds had a driver’s license compared to six in ten today. So it’s not that surprisin g that on my 16th birthday I wasn’t rushing to get a license but an iPhone.“Driving, for young people, does mean they have to disconnect from their technology, and that’s a negative. So if they could sit in the passage side and still be connected, that’s going to be a plus.” Schor continued.To me, another plus is that ridesharing represents something, something much bigger than trying to save money. I see it as evidence that people still depend on each other. My generation shares their cars and apartments the way neighbors used to share cups of sugar. For the system to work, some of us still need our own cars. But until I get my own version of the silver Super Beetle, you can find me on Twitter.29. The American teens like me, prefer to possess an iPhone as a birthday gift because _______.A. it is most fashionable and coolB. they are bored with driving carsC. they are fond of being connectedD. it is much cheaper than a car30. We can learn from the text that _______.A. Twitter is a website for teens to make friends and achieve goalsB. ridesharing can be seen as a sign that people still count on each otherC. driving cars for teens means a plus and connecting with technologyD. having a car and cost-sharing symbolize more fre edom for the author’s mother31. Professor Juliet would agree that _______.A. young people will sit waiting to be contacted by reading a passageB. sharing economy is bound to be responsible for the recessionC. young people tend to share a car with strangers by means of TwitterD. being connected via technology comes first for young people32. The best title for the passage is probably _______.A. Twitter, an Awesome WebsiteB. Cars or iPhoneC. Teens Use Twitter to Thumb RidesD. Cool Teens on the GoDNews that Microsoft made a $44.6 billion bid to buy Yahoo resulted in heated discussions made by many Internet users. Here are some responses:Diane Burke of Weeks bury, KentuckyI think it would definitely be an interesting combination. Everyone recognizes the names Yahoo and Microsoft, but everyone also says, “Did you Google it?” Such a catchphrase (时髦话) is going to be hard to beat. Shaun Carney of Laurelville, OhioI think the merger (合并) will provide more competitions for Google. I don’t think the merger will allow Microsoft to develop faster than Google, though. I believe the increased competition this merger brings will force Google to stay on top of its game by offering more fresh and original Internet tools and expanding on the tools it already offers.Toni Suarez of Hacienda Heights, CaliforniaI view the merger as a necessary element in preventing a monopolization (垄断). Perhaps it would bring better high technology innovations to e-mail and help in researching and developing a better Internet!Rick R. of Edgewater, FloridaIt sounds like a disaster to me. If this were to happen, I would stop using my Yahoo e-mail account because I don’t like the feeling of Microsoft spying upon my business. I will sign up for Google.Antonio Glosser of Kansas City, MissouriRight now, Yahoo offers a lot of features and tools at no cost for all different levels of Internet users. Micr osoft seeks nothing but profit. Undoubtedly, they’ll do nothing other than find ways to start removing Yahoo’s formerly non-priced features. Microsoft’s greed will ruin the great thing that Yahoo currently is.33. How many companies are mentioned in the passage?A. One.B. Two.C. Three.D. Four.34. Which of the following statements is NOT true according to the passage?A. Shaun’s attitude towards Google is passive.B. Toni believes the Internet will have a promising future.C. Rick will support Google after the merger.D. Antonio is afraid that the merger will cost Yahoo’s free features.35. The passage is mainly about ______.A. opinions on the merger of Yahoo and MicrosoftB. the strengths of Yahoo and MicrosoftC. the strengths and weaknesses of large companiesD. the future of Yahoo and Microsoft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。
2024届东北三省三校(哈师大附中、辽宁省实验中学、东北师大附中)高三第二次联合模拟考试语文试卷
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2024届东北三省三校(哈师大附中、辽宁省实验中学、东北师大附中)高三第二次联合模拟考试语文试卷一、现代文阅读阅读下面的文字,完成小题。
材料一:《红楼梦》后四十回续书作者问题不是“新闻”,实实在在是“旧闻”。
张庆善指出,早在2008年《红楼梦》新校本第三次修订出版时,就已经由“曹雪芹、高鹗著”改为“曹雪芹著,无名氏续,程伟元、高鹗整理”了。
张庆善认为曹雪芹其实把《红楼梦》写完了,理由是:从创作规律而言,曹雪芹创作《红楼梦》批阅十载,增删五次,纂成目录,分出章回,历时十年之久,不可能只写出前八十回就不再往下写了,翻来覆去只修改前八十回,这不符合创作规律;现有的大量脂砚斋批语,已经透露出八十回以后的情节,曹雪芹的亲友脂砚斋、畸笏叟都已经看到了这些稿子,如庚辰本第四十二回回前批:“钗玉名虽二个,人却一身,此幻笔也。
今书至三十八回时已过三分之一有余,故写是回,使二人合而为一。
请看黛玉逝世后宝钗之文字,便知余言不谬矣。
”曹雪芹《红楼梦》写完了,原稿八十回后为什么没有传下来?张庆善认为是《红楼梦》传阅时弄丢了。
曹雪芹逝世后,畸笏叟保存残稿,更不敢轻易拿去给别人看,怕再弄丢,最终八十回后的稿子也随着畸笏叟的去世而成了永远的谜案。
在曹雪芹逝世后的二三十年里,《红楼梦》都是以八十回本在社会上流传,直到1791年,程伟元、高鹗整理出版了一百二十回本《红楼梦》,才结束了《红楼梦》以八十回本流传的时代。
那么,《红楼梦》后四十回是从哪里来的?张庆善认为,后四十回是程伟元多年搜寻得来的,程伟元邀请高鹗帮助修订整理,高鹗欣然答应,“细加厘剔,截长补短”,依据就是程伟元、高鹗为程甲本、程乙本出版所写的序和引言。
张庆善认为,高鹗只是整理者之一,到目前为止所有关于高鹗续写后四十回的根据都不成立,而且在程伟元、高鹗刊刻程甲本以前,就有《红楼梦》一百二十回抄本存在,高鹗也没有时间去写。
对于后四十回,有人认为主要是曹雪芹原稿的散稿,有人认为其中没有曹雪芹一个字。
【VIP专享】2014三省三校二模英语试题及答案
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2014年高三第二次联合模拟考试英语试卷第I 卷第一部分:听力(共两节,满分30分)做题时,先将答案标在试卷上。
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. Why didn’t the woman make a cake?A. She was very busy.B. She was very angry with the man.C. She hurt her hands.2. What is the man used to?A. He is used to wearing no hat.B. He is used to going out on a cold winter day.C. He is used to being done harm to.3. Where will Mary probably go tonight?A. To Tom’s home.B. To her hometown.C. To the concert.4. Who is probably Hank?A. He is the woman’s old boss.B. He is the woman’s old brother.C. He is the woman’s old classmate.5. When is the man checking in?A. On Tuesday.B. On Thursday.C. On Friday.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。
东北三省三校(哈师大附中、东北师大附中、辽宁省实验中学)2014年高三第二次模拟 英语 扫描版含答案
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英语答案听力:1-5 AACCA 6-10 BCABC 11-15 BBBAC 16-20 BBCCA阅读:21-24 BAAD 25-28 DCDB 29-32 CBDC 33-35 CAA七选五:36-40 FGBED完形填空: 41-50 ABBDD,BCCAC 51-60 CDDAB,ABCAD语法填空:61. something 62. no 63. found 64. would happen 65. when 66. being pushed 67. wire 68. The 69. over/on 70. instantly短文改错:1. a改为the2. had 改为has3. best 改为most4. In 改为 On5. which改为where或前面加on6. so 改为such7. divided前加being8. hole 改为holes9. them改为it 10.去掉but书面表达:Dear Tom,How are you? I miss you. I’d like to introduce the layout of my school to you.Entering the campus, you will step on the main path leading through the whole campus. On the left of the crossroads is located the modern laboratory building while our splendid teaching building is on the right where we have fascinating lessons every day. At the end of the main path, the library on the left greets you and the gym is on the opposite side. Happily, we do sports after class in the football field which is between the library and the lab building; the basketball court faces the football field across the main path.I love my school with students working hard to realize their dreams and teachers training us like our parents. Provided you can visit my school some day, I will show you around it.I am looking forward to hearing from you.Best wishes.Yours,Li hua 附录:听力材料1. M: Why didn’t you make a birthday cake for Peter?W: Because I didn’t have enough butter and you weren’t here to buy any. I really had my hands full.2. W: You should have known that it may do you harm if you don’t cover your head on such a cold winter day.M: It doesn’t matter. I’m used to it.3. M: Would you like to come over and study tonight, Mary?W: Oh, I’m sorry, Tom. I forgot to tell you that my parents are in town and want to take me to the concert tonight.4. W: Good morning, Hank. It is wonderful to be back in England.M: I’m so glad to see you again. It’s over ten years now since we left university.5. W: Good morning. Can I help you?M: Yes. I’d like a double room.W: How many nights do you plan to stay with us?M: Three. I will be checking out on Friday morning.6. M: Can I help you?W: Yes. I bought this MP4 just yesterday, but it stopped working this morning.M: Let me have a look.W: I’d like to change it for another one.M: Well, have you got your receipt, madam?W: Yes, here it is.M: Just a moment, madam. I need to talk to the manager.7. M: Come in. What can I do for you?W: Professor Smith, are you giving your advanced math course again next term?M: Yes. I’m planning on it.W: I wonder if I could take the course. I know it’s a senior course and I’m only a junior, but… M: You’re a bit young. I’ve allowed seniors to take the course and they usually have a hard time keeping up.W: I know, but math is my favorite subject. Last term I took Professor Baker’s course and I didn’t find it hard for me.M: I see. Well, I’ll speak to Professor Baker. If he thinks you’re ready, I’ll let you take it.W: Thank you, Professor Smith, that’s really very nice of you.8. M: Is there anywhere you’d like to go this weekend?W: Nowhere in particular. Do you have anything in mind?M: Well, John and I are going up north. Would you like to join us? We’re going to stay at Mary White’s.W: Is there enough room for everybody?M: Sure, there’s plenty of room.W: In that case, I’d love to. Thank you very much for the invitation, Bob.M: We’ll start tomorrow first thing. How’s that?W: I am starting to feel excited about going. What should we wear?M: Bring warm clothes.W: Anything else?M: Not really. Maybe a camera if you’re interested in taking some photos.9. M: Here’s the store I was telling you about. I think you can solve your problem here.W: I hope so. Buying a gift for my mother’s birthday gets harder and harder every year. Getting something for people who have almost everything isn’t easy.M: Well, we can begin by looking around the store. They have all kinds of great things.W: Look at this frying pan. I wonder what it’s for.M: It’s for making eggs, I guess. Come over here. These biscuits look delicious. I wonder how they taste. There’s a sign that says: “Help yourself to a free biscuit”.W: These are delicious, but they don’t solve my problem.M: What about these wine glasses? Would your mother like them?W: I doubt it. She has dozens of wine glasses already.M: Here’s an usual gift—a beautiful Chinese teapot. And it’s not expensive at all. It’s only $10.45. Do you think your mother would like it?W: It’s hard to make up my mind. But I think this is a good choice. Thanks for helping me. 10.Some time ago, a friend of mine who worked in a part of the city I didn’t know very well, invited me to call on him. It took me hours to get there and I took great trouble to find a proper spot to park my car. As I was already three-quarters of an hour late, I parked my car quickly.At noon, just as I was leaving my friend’s office, it suddenly struck me that I had no idea where I had parked my car. I could hardly go up to a policeman and tell him that I had lost a small green car somewhere ! Walking down street after street, I examined each car closely and was very happy to see a small green car just behind an old car. But how disappointed I was to discover that though the car was exactly like my own, it belonged to someone else! Feeling quite tired now, I went off for lunch. Some time later, I left the restaurant and walked down the street. Turning the corner, I nearly jumped for joy: my car was right in front of me, and there was no problem this time.To tell the truth, driving in crowded cities is far from being a pleasure and it is much easier to walk than to drive.。
2024届东北三省三校(哈师大附中、东北师大附中、辽宁省实验中学)高三下学期第二次联合模拟考物理试卷
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一、单选题1. 甲、乙两物体做直线运动的v-t 图象如图所示,下列说法正确的是()A .甲、乙两物体都做匀速直线运动B .甲、乙两物体都做匀加速直线运动C .甲物体都做匀速直线运动,乙物体静止D .甲物体做匀加速直线运动,乙物体做匀速直线运动2. 物理学是一门以实验为基础的科学,以下说法正确的是A .光电效应实验表明光具有波动性B .电子的发现说明电子是构成物质的最小微粒C .居里夫人首先发现了天然放射现象D .α粒子散射实验是原子核式结构理论的实验基础3. 某同学用图甲的装置探究摩擦力的变化情况。
水平桌面上固定的力传感器,通过水平棉线拉住物块,物块放置在粗糙的长木板上,长木板左端固定的细绳跨过光滑滑轮悬挂一小桶。
从开始,断断续续往小桶中缓慢加水,传感器记录的图像如图乙所示。
不考虑水平桌面与木板间的摩擦,下列判断正确的是( )A .t 1~t 2内,物块受到的是滑动摩擦力B .0~t 3内,小桶中的水量时刻在增加C .t 3~t 4内,木板的加速度逐渐增大D .t 4~t 5内,木板一定做匀速运动4. 某一物体做直线运动,其速度随时间变化的v-t 图像如图所示.下列说法正确的是( )A .在t =36s 时,物体速度的方向发生了变化B .在0-44s 内,bc 段对应的加速度最大C .在36s-44s 内,物体的加速度为-6m/s 2D .在36s-44s 内,物体的位移为192m5. 排球是我们三中的体育特色。
某同学在体育课上进行排球训练,一次垫球时,他用双臂将排球以原速率斜向上垫回,球在空中运动一段时间后落地。
不计空气阻力,下列说法正确的是( )2024届东北三省三校(哈师大附中、东北师大附中、辽宁省实验中学)高三下学期二、多选题A .垫球过程该同学对球做功不为零B .垫球过程该同学对球做功为零C .球在上升过程中处于超重状态D .球在下落过程中处于超重状态6. 已知如图所示为穿过匝数n =100的线圈的磁通量F 随时间t 按正弦规律变化的图像,其产生的电压为交变电压(π=3.14)。
哈师大附中、东北师大附中、辽宁省实验中学2014年高三第二次联合模拟考试
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哈师大附中、东北师大附中、辽宁实验中学2014年高三第二次联合模拟考试理科综合能力测试物理试题二、选择题:本题共8小题,每小题6分。
在每小题给出的四个选项中,第14~18题只有一项符合题目要求,第19~21题有多项符合题目要求。
全部选对的得6分,选对但不全的得3分,有选错的得0分。
14.下列关于物理学史的内容说法正确的是A.奥斯特发现了电流产生磁场方向的定则B.法拉第发现了产生感应电流的条件C.密立根利用扭秤实验发现了电荷之间的相互作用规律D.欧姆发现了确定感应电流方向的定律15.运输人员要把质量为m,体积较小的木箱拉上汽车。
现将长为L的木板搭在汽车尾部与地面间,构成一固定斜面,然后把木箱沿斜面拉上汽车。
斜面与水平地面成30o 角,拉力与斜面平行。
木箱与斜面间的动摩擦因数为,重力加速度为g。
则将木箱运上汽车,拉力至少做功16.如图所示,平行板电容器与恒压电源连接,电子以速度V0垂直于电场线方向射入并穿过平行板间的电场,若仅使电容器上极板上移,设电容器极板上所带电荷量Q,电子穿出平行板时的在垂直于板面方向偏移的距离y,以下说法正确的是A. Q减小, y不变B. Q减小, y减小C. Q增大, y减小D. Q增大, y增大17.如图所示,三个物体质量分别为m1=1.0kg、m2=2.0kg、m3=3.0kg,已知斜面上表面光滑,斜面倾角,m1和m2之间的动摩擦因数μ=0.8。
不计绳和滑轮的质量和摩擦。
初始用外力使整个系统静止,当撤掉外力时,m2将(g=10m/s2,最大静摩擦力等于滑动摩擦力)A.和m1一起沿斜面下滑B.和m1一起沿斜面上滑C.相对于m 1上滑D.相对于m 1下滑18.如图所示,等腰直角区域EFG 内有垂直纸面向里的磁感应强度为B 的匀强磁场,直角边CF 长度为2L 。
现有一电阻为R 的闭合直角梯形导线框ABCD 以恒定速度v 水平向右匀速通过磁场。
t=0时刻恰好位于图示位置(即BC 与EF 在一条直线上,且C 与E 重合),规定导线框中感应电流沿逆时针方向时为正,则感应电流i 与时间t 的关系图线正确的是19.如图所示,直线a 和曲线b 分别是在平直公路上行驶的汽车a 和b 的位移一时间(x -t)图象。
东北三省三校2014届高三第二次联合模拟考试理综试卷(干净版)
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2014年高三第二次联合模拟考试理综测试可能用到的相对原子质量:H 1 C 12 N 14 O 16 S 32 K 39 Mn 55 Fe 56一、选择题:本题共13小题,每小题6分,在每小题给出的四个选项中,只有一个是符合题目要求的。
1.下列有关生物体组成元素和化合物的叙述,正确的是A.严重缺铁的人容易产生乳酸中毒B.一个DNA 分子彻底水解后能得到4种脱氧核苷酸C.蛋白质和DNA 分子的多样性都与它们的空间结构密切相关D.淀粉、糖原、纤维素和麦芽糖彻底水解后,得到的产物是不同的2.下列关于实验条件或现象的描述,完全正确的是A.使用双缩脲试剂鉴定蛋白质时,需要水浴加热B.纸层析法分离绿叶中色素时,滤纸条自上而下的第三条色素带最宽,颜色为蓝绿色C.用溴麝香草酚蓝水溶液检测CO 2时,颜色变化为蓝色→黄色→绿色D.观察细胞中的染色体数目,实验材料为人的口腔上皮细胞3. A.该病毒的遗传物质不是双链DNAB.该病毒的遗传信息流动过程不遵循中心法则C.以该病毒DNA 为模板,复制出的DNA 不是子代病毒的遗传物质D.该病毒DNA 的突变频率较高4.下图一是真核细胞DNA 复制过程的模式图,图二是大肠杆菌DNA 复制过程模式图,箭头表示复制方向。
对此描述错误的是A.真核细胞DNA 有多个复制起点,而大肠杆菌只有一个B.两者均具有双向复制的特点C.真核细胞DNA 复制时,在起点处不都是同时开始的D.两者的遗传物质均是环状的5.下列关于下丘脑的叙述正确的是 A.下丘脑通过释放促甲状腺激素来促进垂体分泌相关激素B.下丘脑控制生物节律,同时呼吸中枢也位于下丘脑C.出现尿量异常增大的可能原因是下丘脑或垂体受损D.下丘脑体温调节中枢可感受到寒冷或炎热6.如图是人类睾丸横切片示意图,其中①→⑤为精子发生过程中各阶段的细胞,下列有关说法正确的是A.①为精原细胞,它只能进行减数分裂B.②为初级精母细胞,②所指细胞内有染色体92条C.③为次级精母细胞,细胞内可能有2条X 染色体图一 ① ②③④⑤图二图二 哈尔滨师大附中 东北师大附中 辽宁省实验中学点燃8.下列关于氯水的说法正确的是A.向氯水中通入少量二氧化硫,氯水的漂白性增强B.氯水中加入NaCl 固体,对溶液的pH 无影响C.常温下,pH=2的氯水中:c(Cl -)+c(ClO -)+c(OH -)=0.01mol/LD.向氯水中滴加少量NaHCO 3溶液的离子反应方程式为:Cl 2+2HCO 3- 2CO 2↑+Cl -+ClO -+H 2O9.相对分子质量为100的有机物A 能与钠反应,且完全燃烧只生成CO 2和H 2O 。
东北三省三校(哈师大附中、东北师大附中、辽宁省实验中学)2014年高三第二次模拟 数学文试卷 Word版含答案
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东北三省三校2014年高三第二次联合模拟考试(哈师大附中、东北师大附中、辽宁实验中学)数学文试题本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分,共150分,考试时间120分钟。
第Ⅰ卷(选择题 共60分)一、选择题(本大题共12小题,每小题5分,在每小题给出的四个选项中,只有一项是符合题目要求的。
)1. 若{1,2,3,4,5,6,7,8},{1,2,3},{5,6,7}U A B ===,则()()U U C A C B = A. {4,8}B. {2,4,6,8}C. {1,3,5,7}D. {1,2,3,5,6,7}2. 已知复数12z =-+,则||z z +=A. 12-B. 12-+ C.12+ D.12 3. 已知数列{}n a 满足1220,1n n a a a ++==,则数列{}n a 的前10项和10S 为 A.104(21)3- B.104(21)3+ C.104(21)3-- D.104(21)3-+ 4. 已知1sin cos 3αα+=,则2sin ()4πα-=A.118B.1718C.89D.95. 已知:3:,:11p x k q x ≥<+,如果p 是q 的充分不必要条件,则k 的取值范围是 A. [2,)+∞B. (2,)+∞C. [1,)+∞D. (,1]-∞-6. 已知△ABC 的内角A ,B ,C 的对边分别为,,a b c ,若1c o s ,s i n 3s i n 3A C B==,且ABC S ∆=则b =A. 1B.C.D. 37. 已知△ABC 中,||10,16,BC AB AC D =⋅=- 为边BC 的中点,则||AD等于A. 6B. 5C. 4D. 38. 在某次测量中得到的A 样本数据如下:42,43,46,52,42,50,若B 样本数据恰好是A 样本数据每个都减5后所得数据,则A 、B 两样本的下列数字特征对应相同的是A. 平均数B. 标准差C. 众数D. 中位数9. 已知某算法的流程图如图所示,若输入7,6x y ==,则输出的有序数对为A. (13,14)B. (12,13)C. (14,13)D. (13,12)10. 将函数()2sin(2)4h x x π=+的图象向右平移4π个单位,再向上平移2个单位,得到函数()f x 的图象,则函数()f x 的图象与函数()h x 的图象A. 关于直线0x =对称B. 关于直线1x =对称C. 关于点(1,0)对称D. 关于点(0,1)对称11. 已知双曲线22221(0,0)x y a b a b-=>>的焦点1(,0)F c -、2(,0)F c (0)c >,过2F 的直线l 交双曲线于A ,D 两点,交渐近线于B ,C 两点。
哈师大附中、东北师大附中、辽宁省实验高三第二次联合模拟考试(理综)
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哈师大附中2010年高三第二次联合模拟考试东北师大附中理科综合能力测试辽宁省实验中学本试卷分第I卷(选择题)和第II卷(非选择题)两部分。
其中第II卷第33 —40题为选考题,其它题为必考题。
考生作答时,将答案答在答题卡上,在本试卷上答题无效。
考试结束后,将本试卷和答题卡一并交回。
注意事项:1 •答题前,考生务必先将自己的姓名、准考证号码填写在答题卡上,认真核对条形码上的姓名、准考证号,并将条形码粘贴在答题卡的指定位置上。
2•选择题答案使用2B铅笔填涂,如需改动,用橡皮擦干净后,再选涂其他答案的标号; 非选择题答案使用毫米的黑色中性(签字)笔或碳素笔书写,字迹工整、笔迹清楚。
3 •请按照题号在各题的答题区域(黑色线框)内作答,超出答题区域书写的答案无效。
4 •保持卡面清洁,不折叠,不破损。
5•作选考题时,考生按照题目要求作答,并用2B铅笔在答题卡上把所选题目对应的题号涂黑。
可能用到的相对原子质量:H 1 C 12 N 14 O 16 Al 27 Ca 40第I卷一、选择题:本题共13小题,每小题6分,在每小题给出的四个选项中,只有一项是符合题目要求的。
1 •下列有关细胞生命历程的说法正确的是A. 衰老细胞的细胞膜通透性发生改变B. 胚胎发育过程中没有细胞的凋亡C. 被病原体感染的细胞的清除是通过细胞坏死实现的D. 细胞分化导致细胞丧失全能性哈师大附中2010年高三第二次联合模拟考试2.下列关于叶绿体和线粒体的叙述,正确的是A.叶绿体中可发生 CO 2 C 3 C 6H 12O 6,线粒体中可发生 C 6H 12O 6 C 3 co 2B. ATP 和[H ]在叶绿体中随水的分解而产生,在线粒体中随水的生成而产生C. 光能转变成化学能发生在叶绿体中,化学能转变成光能发生在线粒体中D. 都具有较大膜面积和复杂的酶系统,有利于新陈代谢高效而有序地进行3•右图表示人体生命活动调节过程,请据图判定下列说法错 误的是A. 假如细胞1是甲状腺细胞,细胞 2可以表示垂体细胞B. 假如细胞1是垂体细胞,细胞 2可以表示甲状腺细胞C. 该图可以表示激素、CO 等化学物质的调节过程D. 细胞1的分泌物之所以能与靶细胞特异性结合是由于靶细胞有特异性的受体4•孟德尔的遗传规律被重新发现以后,经过很多科学家多年不懈的努力,证明了基因在染 色体上。
2024届东北三省三校(哈师大附中、东北师大附中、辽宁省实验中学)高三下学期第二次联合模拟考物理试卷
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一、单选题1. 某同学想自己设计并改装一个欧姆表。
他手上有如下器材:量程300μA 、内阻900Ω的电流计;电动势1.5V 的一节干电池;滑动变阻器、电阻箱和若干定值电阻。
他设计的电路如图甲所示,实验时他将两表笔短接,电流计指针满偏时,他计算出电路中的总电阻为5kΩ。
然后他将一个50Ω和10Ω的电阻分别接到两表笔之间时,发现电流计指针指示的位置几乎一样,很难区分。
经过研究后他认为,要想比较准确地测量几十欧姆的电阻,用图甲所示电路并不合适,为此他设计了如图乙所示的电路。
并联合适电阻 R ₂后,使干路电流是流经电流计电流的100倍。
则( )A .将图乙电路中的两表笔短接,此时电路中的总电阻是5ΩB .分别将一个50Ω和10Ω的电阻先后接到图乙电路的两表笔之间,通过干电池的电流几乎没有区别C .分别将一个50Ω和10Ω的电阻先后接到图乙电路的两表笔之间,电流计指针指示的位置明显不同D .在图甲电路和图乙电路的两表笔之间分别接入5kΩ和50Ω的电阻,通过两电流计的电流明显不同2.如图甲所示,正方形硬质金属框放置在磁场中,金属框平面与磁场方向垂直。
磁感应强度B 随时间t 变化规律如图乙所示。
在0~0.2s 的时间内与0.2s~0.6s的时间内( )A .通过金属框的电荷量之比为2∶1B .金属框中电流的电功率之比为4∶1C .金属框中产生的焦耳热之比为4∶1D .金属框两边受到安培力方向相反,大小之比为3∶13. 通过实验研究通电长直导线间的相互作用规律。
如图所示,为两根平行的长直导线,通过外接直流电源分别给两导线通以相应的恒定电流。
为导线所在平面内的两点。
下列说法中正确的是( )A.两导线中的电流大小相等、方向相反时,点的磁感应强度为零B .导线电流向上、导线电流向下时,导线所受安培力向右C .点的磁感应强度一定不为零D .两导线所受安培力的大小一定相等4. 加速度传感器是一些智能手机上配备的较为实用的软件,能显示物体运动过程中的加速度变化情况。
(11)2014届哈师大附中、东北师大附中辽宁省实验中学高三第二次模拟考试 理综试卷
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2015年普通高等学校招生模拟考试(新课标第十一套)理科综合试卷(选自2014届东北三省三校高三第二次联合模拟考试)(东北三省三校:哈尔滨师大附中、东北师大附中、辽宁省实验中学)本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分,其中第Ⅱ卷第30--40为选考题,其他题均为必考题。
满分300分,考试时间150分钟第Ⅰ卷选择题2015年普通高等学校招生模拟考试(新课标第十一套)Array理科综合试卷参考答案(选自2014届东北三省三校高三第二次联合模拟考试)(东北三省三校:哈尔滨师大附中、东北师大附中、辽宁省实验中学)生物试题答案1.A 2.B 3.B 4.D 5.C 6.C29.(共10分)(1)5(1分)3(1分)(2)暗反应(1分)叶绿体基质(1分)(3)1(2分)5(2分)(4)暗反应(1分)暗反应需要多种酶参加催化(1分)30.(共10分)(1)增加(1分)(2)①将2株改为20株(或其它合理答案)(2分)②增加空白对照组,即蒸馏水处理(2分)(3)A(1分)是(1分)萘乙酸处理的组别中可溶性蛋白含量均高于对照组(2分)0--3.125mg/L(1分)31.(共9分)(1)致死(1分)(2)红眼(1分)染色体变异(缺失)(1分)红眼(1分)能(1分)不能(1分)(3)显微镜/显微/染色体(2分)32.(共10分)(1)J(1分)1(1分)无限环境(空间和资源充裕)(1分)理想条件(气候适宜,没有敌害等)(1分)(2)B(1分)(3)2(1分)1、2、3三个物种的营养级不同,营养级越高,能量越少,环境容纳量越小(其它合理答案也给分)(2分)(4)1→2→3(2分)39.(共15分)(1)①水中蒸馏/水蒸气蒸馏(2分)②NaCL(2分)③无水Na2SO4(2分)(2)石灰水(2分)原料易焦糊,有效成分易水解(2分)(3)石油醚(2分)纸层析(1分)萃取剂的选择、原料颗粒的大小、紧密程度、萃取温度、时间(2分)40.(15分)排卵(1分)受精(1分)2个极体(1分)透明带反应(1分)出生前(胎儿时期)(1分)精子获能(获能)(2分)(3)促性腺激素(2分)获能液(2分)(4)血清(2分)(5)BCFH(2分)化学试题答案22、1.035 1.195(±0.002)(每空3分,共6分)23、乙(2分);22111U R N NR U =;(2分) (连线3分)N :V 1的总格数,N 1:V 1的读出格数,U 2:V 2的读数,R 1:待测表内阻,R 2:V 2表内阻。
东北三省三校(哈尔滨师大附中、东北师大附中、辽宁省实验中学)高三英语第二次联合模拟考试题(扫描版)(
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东北三省三校(哈尔滨师大附中、东北师大附中、辽宁省实验中学)2014年高三英语第二次联合模拟考试题(扫描版)英语答案听力:1-5 AACCA 6-10 BCABC 11-15 BBBAC 16-20 BBCCA阅读:21-24 BAAD 25-28 DCDB 29-32 CBDC 33-35 CAA七选五:36-40 FGBED完形填空: 41-50 ABBDD,BCCAC 51-60 CDDAB,ABCAD语法填空:61. something 62. no 63. found 64. would happen 65. when 66. being pushed 67. wire68. The 69. over/on 70. instantly短文改错:1. a改为the2. had 改为has3. best 改为most4. In 改为 On5. which改为where 或前面加on6. so 改为such7. divided前加being8. hole 改为holes9. them改为it 10.去掉but书面表达:Dear Tom,How are you? I miss you. I’d like to introduce the layout of my school to you. Entering the campus, you will step on the main path leading through the whole campus. On the left of the crossroads is located the modern laboratory building while our splendid teaching building is on the right where we have fascinating lessons every day. At the end of the main path, the library on the left greets you and the gym is on the opposite side. Happily, we do sports after class in the football field which is between the library and the lab building; the basketball court faces the football field across the main path.I love my school with students working hard to realize their dreams and teachers training us like our parents. Provided you can visit my school some day, I will show you around it.I am looking forward to hearing from you.Best wishes.Yours,Li hua附录:听力材料1. M: Why didn’t you make a birthday cake for Peter?W: Because I didn’t have enough butter and you weren’t here to buy any. I really had my hands full.2. W: You should have known that it may do you harm if you don’t cover your head on such a cold winter day.M: It doesn’t matter. I’m used to it.3. M: Would you like to come over and study tonight, Mary?W: Oh, I’m sorry, Tom. I forgot to tell you that my parents are in town and want to take me to the concert tonight.4. W: Good morning, Hank. It is wonderful to be back in England.M: I’m so glad to see you again. It’s over ten years now since we left university.5. W: Good morning. Can I help you?M: Yes. I’d like a double room.W: How many nights do you plan to stay with us?M: Three. I will be checking out on Friday morning.6. M: Can I help you?W: Yes. I bought this MP4 just yesterday, but it stopped working this morning. M: Let me have a look.W: I’d like to change it for another one.M: Well, have you got your receipt, madam?W: Yes, here it is.M: Just a moment, madam. I need to talk to the manager.7. M: Come in. What can I do for you?W: Professor Smith, are you giving your advanced math course again next term? M: Yes. I’m planning on it.W: I wonder if I could take the course. I know it’s a senior course and I’m only a junior, but…M: You’re a bit young. I’ve allowed seniors to take the course and they usually have a hard time keeping up.W: I know, but math is my favorite subject. Last term I took Professor Baker’s course and I didn’t find it hard for me.M: I see. Well, I’ll speak to Professor Baker. If he thinks you’re ready, I’ll let you take it.W: Thank you, Professor Smith, that’s really very nice of you.8. M: Is there anywhere you’d like to go this weekend?W: Nowhere in particular. Do you have anything in mind?M: Well, John and I are going up north. Would you like to join us? We’re going to stay at Mary White’s.W: Is there enough room for everybody?M: Sure, there’s plenty of room.W: In that case, I’d love to. Thank you very much for the invitation, Bob. M: We’ll start tomorrow first thing. How’s that?W: I am starting to feel excited about going. What should we wear?M: Bring warm clothes.W: Anything else?M: Not really. Maybe a camera if you’re interested in taking some photos.9. M: Here’s the store I was telling you about. I th ink you can solve your problem here.W: I hope so. Buying a gift for my mother’s birthday gets harder and harder every year. Getting something for people who have almost everything isn’t easy.M: Well, we can begin by looking around the store. They have all kinds of great things.W: Look at this frying pan. I wonder what it’s for.M: It’s for making eggs, I guess. Come over here. These biscuits look delicious.I wonder how they taste. There’s a sign that says: “Help yourself to a freebiscuit”.W: These are delicious, but they don’t solve my problem.M: What about these wine glasses? Would your mother like them?W: I doubt it. She has dozens of wine glasses already.M: Here’s an usual gift—a beautiful Chinese teapot. And it’s not expensive at all. It’s only $10.45. Do you think your mother would like it?W: It’s hard to make up my mind. But I think this is a good choice. Thanks for helping me.10.Some time ago, a friend of mine who worked in a part of the city I didn’t know very well, invited me to call on him. It took me hours to get there and I took great trouble to find a proper spot to park my car. As I was already three-quarters of an hour late, I parked my car quickly.At noon, just as I was l eaving my friend’s office, it suddenly struck me that I had no idea where I had parked my car. I could hardly go up to a policeman and tell him that I had lost a small green car somewhere ! Walking down street after street, I examined each car closely and was very happy to see a small green car just behind an old car. But how disappointed I was to discover that though the car was exactly like my own, it belonged to someone else! Feeling quite tired now, I went off for lunch. Some time later, I left the restaurant and walked down the street. Turning the corner, I nearly jumped for joy: my car was right in front of me, and there was no problem this time.To tell the truth, driving in crowded cities is far from being a pleasure and it is much easier to walk than to drive.11。
东北三省三校(哈尔滨师大附中、东北师大附中、辽宁省实验中学)高三数学第二次联合模拟考试题 文(扫描版
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东北三省三校(哈尔滨师大附中、东北师大附中、辽宁省实验中学)2014年高三数学第二次联合模拟考试题文(扫描版)新人教版二模文科数学参考答案题号 1 2 3 4 5 6 7 8 9 10 11 12 答案 A D C B B A D B A DC C13.22333(1)124n n n +++⋅⋅⋅+=14.1252π 15.3 16.①②④17.(Ⅰ)解:当1=n 时,111151,4=+∴=-a S a w.w.w.k.s.5.u.c.o.m………2分 又1151,51++=+=+Q n n n n a S a S115,n n n a a a ++∴-= ………4分114n n a a +=-即∴数列{}n a 是首项为114=-a ,公比为14=-q 的等比数列,∴1()4=-nn a ………6分 (Ⅱ)nb n n -=-=)41(log 4, ………8分 所以11111(1)1n n b b n n n n +==-++ ………10分 11111(1)()()22311n n T n n n ⎡⎤=-+-++-=⎢⎥++⎣⎦L ………12分 18.(Ⅰ)解:第三组的频率是0.150×2=0.3;第四组的频率是0.100×2=0.2;第五组的频率是0.050×2=0.1 ………3分 (Ⅱ)设“抽到的两个产品均来自第三组”为事件A ,由题意可知,分别抽取3个,2个,1个。
………6分 不妨设第三组抽到的是123,,A A A ;第四组抽到的是12,B B ;第五组抽到的是1C ,所含基本事件总数为:{}{}{}{}{}{}{}{}{}{}{}{}121323111211212221313231,,,,,,,,,,,,,,,,,,,,,,,A A A A A A A B A B A C A B A B A C A B A B A C {}{}{}121121,,,,,B B B C B C………10分所以31()155P A == (12)分 19.(Ⅰ)证明: 连结MO1111////A M MA MO AC AO OC MO BMD AC BMDAC BMD =⎫⎫⇒⎬⎪=⎭⎪⎪⊂⇒⎬⎪⊄⎪⎪⎭平面平面平面 ………4分(Ⅱ)设过1C 作1C H ⊥平面11BDD B 于H ,11BD AA BD AC BD A AC⊥⊥⊥,得面于是1BD A O⊥1111116022cos 60ABCDBAD AO AC AB AA A O AC A O ABCDA AC A O BD ⎫⎫⎫⎪⎪∠=⇒==⎬⎪⎪⎪⎪=⎭⎪⎪⎪⎪=⇒⊥⎬⎪⇒⊥⎬⎪∠=⎪⎪⎪⎪⎪⎪⎪⎪⎭⎪⊥⎪⎭o o 平面 (8)分又因为平面//ABCD 平面1111A B C D ,所以点B 到平面1111A B C D 的距离等于点1A到平面ABCD 的距离13A O = ………10分111111111111132232322B B C D C BB D V V AO C H C H --=⇔⋅⋅⨯=⋅⋅⨯⨯⇒= ………12分20.(Ⅰ)设(,)P x y2(1)18y x y =++⇒= ………4分 (Ⅱ)设直线AB :y kx b =+,1122(,),(,)A x yB x y将直线AB 代入到28x y =中得2880x kx b --=,所以12128,8x x k x x b +==-………6分又因为2221212121281664x x OA OB x x y y x x b b ⋅=+=+=-+=-u u u r u u u r 4b ⇒= (1)0分所以恒过定点(0,4) ………12分21.(Ⅰ)''(),()21bf xg x ax x ==-则''(1)(1)01(1)(1)1g f a g f b ===⎧⎧⇒⎨⎨==⎩⎩ ………3分 (Ⅱ) 设()2()()()ln 0u x g x f x x x x x =-=-->()()'211()x x u x x+-=………4分令'()01u x x =⇒=所以,()()10u x u ≥= 即()()g x f x ≥ ………7分(Ⅲ) 设()2()()()ln (1,)b h x f x g x x b x x x e =--=-∈,2'2()b x h x x -=,令'()0h x x =⇒=> ………8分所以,原问题()ln 1022b b h x h ⎛⎫==-> ⎪⎝⎭极大 ………10分又因为()()()()11,b b b h h e b e b e =-=-+设()xt x e x =-(()2,x e ∈+∞) '()10x t x e =->所以()t x 在()2,e +∞上单调递增,()()(2)00x b t x t e e x h e >>∴>∴<所以有两个交点 ………12分 22. (Ⅰ)2//AB CD PAB AQC AQC ACB ACB CQAPA O PAB ACB AQ O QAC CBA AC AB AC AB CQ CQ AC ⇒∠=∠⎫⎫⇒∠=∠⎬⎪⇒⇒∠=∠⎬⎭⎪⇒∠=∠⎭⇒=⇒=⋅V :V e e 为切线为切线………5分 (Ⅱ)//113622,AB CD BP AP AB AP PC PQ QCQC PC AQ BP AB ⎫⎫⎪⎪⇒===⎬⎪=⇒==⎬⎪⎭⎪⎪==⎭AP 为O e 切线212AP PB PC QA ⇒=⋅=⇒=又因为AQ 为O e 切线2AQ QC QD QD ⇒=⋅⇒= (10)分 23. (Ⅰ)221:22C x y +=,4l x += ………5分(Ⅱ)设),sin Qθθ,则点Q 到直线l 的距离d==≥………8分当且仅当242kππθπ+=+,即24kπθπ=+(k Z∈)时取等………10分24.解:(Ⅰ)由柯西不等式得,2222222()(111)()3a b c a b c++≤++++=∴a b c≤++≤所以a b c++的取值范围是[………5分(Ⅱ)同理,2222222()[111]()3a b c a b c-+≤+-+++=()………7分若不等式2|1|1()x x a b c-++≥-+对一切实数,,a b c恒成立,则311≥++-xx,解集为33(,][,)22-∞-⋃+∞………10分。
【英语】辽宁省东北三省2014届高三第二次模拟考试
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辽宁省东北三省三校2014年高三第二次联合模拟考试(哈师大附中、东北师大附中、辽宁实验中学)英语试题第I卷第一部分:听力 (共两节,满分30分)做题时,先将答案标在试卷上。
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. Why didn’t the woman make a cake?A. She was very busy.B. She was very angry with the man.C. She hurt her hands.2. What is the man used to?A. He is used to wearing no hat.B. He is used to going out on a cold winter day.C. He is used to being done harm to.3. Where will Mary probably go tonight?A. To Tom’s home.B. To her hometown.C. To the concert.4. Who is probably Hank?A. He is the woman’s old boss.B. He is the woman’s old brother.C.He is the woman’s old classmate.5. When is the man checking in?A. On Tuesday.B. On Thursday.C. On Friday.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。
哈师大附中、东北师大附中、辽宁实验中学2014届下学期高三年级第二次联合模拟考试语文试卷
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哈师大附中、东北师大附中、辽宁实验中学2014届下学期高三年级第二次联合模拟考试语文试卷本试卷分第Ⅰ卷(阅读题)和第Ⅱ卷(表达题)两部分,其中第Ⅰ卷第三、四题为选考题,其它题为必考题。
第Ⅰ卷阅读题甲必考题一、现代文阅读(9分,每小题3分)阅读下面的文字,完成1~3题。
为什么教育不能产业化教育究竟能不能产业化?教育的确在一定程度上具有与私人产品相同的属性,比如这种产品的消费也具有一定的竞争性、排他性,并且,受教育者可以通过教育得益,例如增加工资收入、提高社会地位、获得精神享受等,其教育花费也就等同于私人的一种投资。
从这个意义上讲,教育具有商品属性,可以定价,可以买卖。
但是,教育同时具有公共产品的基本属性——社会公益性。
受教育者通过教育可以获得个人的种种直接收益,但受过良好教育的公民无疑可以给全社会带来广泛的收益,包括生产力的提高、社会文明程度的进步等等。
正因教育消费有溢出效应,也就是公益性,所以,经济学把教育定义为“准公共产品”,而不是私人产品。
这早已成为世界性的共识,成为世界所有国家主要由政府举办教育事业的最重要的理论根基。
1999年10月联合国教科文组织在巴黎召开了首次世界教育大会,大会一致认为“市场规律和竞争法则不适用于教育。
教育不是经济的一个分支。
教育过程、教育目标、教育结果或‘教育产品’都不能与经济相提并论”。
我们认同这样的认识。
事实上,世界上也没有任何一个国家对自己的国民实行完全的教育产业化政策;政府对教育的普及和提高负有不可推卸的责任。
当然,就学校方方面面的工作而言,有一部分是可以推向市场或更多地运用市场手段的。
例如,高校后勤的相当一部分可以而且应当实施市场化或准市场化的改革;学校的科技成果转化为生产力应当通过市场来进行;学校依法向社会提供的各类职业技能培训、各种咨询服务等可以是非盈利性的,也可以是盈利性的,但所有这些都不是教育本身的产业化。
一个例外是,对外国留学生的教育可以实行准市场政策,因为他们不是本国的纳税人。
东北三省三校2014年高三第二次联合模拟考试数学(理)英语试卷及答案
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① A 1D⊥ C1P;
②若 BD 1⊥平面 PAC,则
1
;
3
③若△ PAC 为钝角三角形,则
(0, 1) ; 2
④若
2 (
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,则△
PAC
为锐角三角形。
3
其中正确的结论为
。(写出所有正确结论的序号)
三、解答题(解答应写出文字说明,证明过程或演算步骤。
)
17. (本小题满分 12 分) 设数列 { an} 的前 n 项和为 Sn,对任意的正整数 n,都有 an=5Sn+1 成立。 (Ⅰ)求数列 { an} 的通项公式;
( a, b,c∈ [0,1) ),如果已知该运动员一次射箭击中环数的期望为
9 环,则当 10
1
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2
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11
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10. 已知某算法的流程图如图所示,输入的数 x 和 y 为自然数,若已知输出的有序数对为
(13,14) ,
则开始输入的有序数对 ( x, y) 可能为
东北三省三校 2014 年高三第二次联合模拟考试
(哈师大附中、东北师大附中、辽宁实验中学)
数学理试题
本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分,共
150 分,考试时间 120 分钟。
第Ⅰ卷(选择题 共 60 分) 一、选择题(本大题共 12 小题,每小题 5 分,在每小题给出的四个选项中,只有一项是符合题目要 求的。)
题号。
22. (本小题满分 10 分)选修 4-1:几何证明选讲 已知 PQ 与圆 O 相切于点 A ,直线 PBC 交圆于 B,C 两点, D 是圆上一点,且 AB ∥ CD, DC 的
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哈师大附中、东北师大附中、辽宁实验中学2014届下学期高三第二次联合模拟考试数学试卷(理科,有答案)本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分,共150分,考试时间120分钟。
第Ⅰ卷(选择题 共60分)一、选择题(本大题共12小题,每小题5分,在每小题给出的四个选项中,只有一项是符合题目要求的。
)1. 若}7,6,5{}3,2,1{}8,7,6,5,4,3,2,1{===B A U ,,,则(U A )∩(U B )= A. {4,8}B. {2,4,,6,8}C. {1,3,5,7}D. {1,2,3,5,6,7}2. 已知复数i z 2321+-=,则=+||z z A. i 2321--B. i 2321+-C.i 2321+ D.i 2321- 3. 设随机变量ξ服从正态分布)9,2(N ,若)(c P >ξ=)2(-<c P ξ,则c 的值是 A. 1B. 2C. 3D. 44. 已知113::<+≥x q k x p ,,如果p 是q 的充分不必要条件,则实数k 的取值范围是 A. ),2[+∞B. ),2(+∞C. ),1[+∞D. ]1,(--∞5. 已知△ABC 的内角A ,B ,C 的对边分别为a ,b ,c ,且BC Aa cbc sin sin sin +=--,则B=A.6π B.4π C.3π D.43π 6. 已知函数)1ln()(2+=x x f 的值域为}2,1,0{,则满足这样条件的函数的个数为 A. 8B. 9C. 26D. 277. 已知△ABC 16·10-==,,D 为边BC 等于 A. 6B. 5C. 4D. 38. 函数)42sin(2)(π+=x x h 的图象与函数)(x f 的图象关于点)1,0(对称,则函数)(x f 可由)(x h 经过 的变换得到A. 向上平移2个单位,向右平移4π个单位 B. 向上平移2个单位,向左平移4π的单位 C. 向下平移2个单位,向右平移4π个单位 D. 向下平移2个单位,向左平移4π的单位 9. 一个射箭运动员在练习时只记射中9环和10环的成绩,未击中9环或10环就以0环记。
该运动员在练习时击中10环的概率为a ,击中9环的概率为b ,既未击中9环也未击中10环的概率为c (a ,b ,c ∈)1,0[),如果已知该运动员一次射箭击中环数的期望为9环,则当ba 9110+取最小值时,c 的值为 A.111B.112 C.115 D. 010. 已知某算法的流程图如图所示,输入的数x 和y 为自然数,若已知输出的有序数对为)14,13(,则开始输入的有序数对),(y x 可能为A. )7,6(B. )6,7(C. ()5,4D. )4,5(11. 已知双曲线12222=-by a x )00(>>b a ,的焦点)0,(1c F -、)0)(0,(2>c c F ,过F 2的直线l 交双曲线于A ,D 两点,交渐近线于B ,C 两点。
设m F F =+11,n F F =+11,则下列各式成立的是A. ||||n m >B. ||||n m <C. 0||=-n mD. 0||>-n m12. 已知方程k xx =|cos |在),0(+∞上有两个不同的解α、β)(βα<,则下列的四个命题正确的是A. sin2α=2αcos 2αB. cos2α=2αsin 2αC. sin2β=-2βsin 2βD. cos2β=-2βsina 2β第Ⅱ卷(非选择题 共90分)本卷包括必考题和选考题两部分。
第13题~第21题为必考题,每个试题考生都必须作答,第22题-第24题为选考题,考生根据要求作答。
二、填空题(本大题共4小题,每小题5分)13. 观察下列等式:2311=,233321=+,23336321=++,23333104321=+++,…,根据上述规律,第n 个等式为14. 某几何体的三视图如图所示,则该几何体外接球的体积为15. 在区间]2,0[和]1,0[分别取一个数,记为x 、y ,则x x y 22+-≤的概率为 。
16. P 为正方体ABCD-A 1B 1C 1D 1对角线BD 1上的一点,且BP=λBD 1()1,0(∈λ)。
下面结论:①A 1D ⊥C 1P ;②若BD 1⊥平面PAC ,则31=λ; ③若△PAC 为钝角三角形,则)21,0(∈λ; ④若)1,32(∈λ,则△PAC 为锐角三角形。
其中正确的结论为 。
(写出所有正确结论的序号)三、解答题(解答应写出文字说明,证明过程或演算步骤。
) 17. (本小题满分12分)设数列{a n }的前n 项和为S n ,对任意的正整数n ,都有a n =5S n +1成立。
(Ⅰ)求数列{a n }的通项公式; (Ⅱ)设||log 4n n a b =,求数列}·1{2+n n b b 前n 项和T n 。
18. (本小题满分12分)某个团购网站为了更好地满足消费者需求,对在其网站发布的团购产品展开了用户调查,每个用户在使用了团购产品后可以对该产品进行打分,最高分是10分。
上个月该网站共卖出了100份团购产品,所有用户打分的平均分作为该产品的参考分值,将这些产品按照得分分成以下几组:第一组[0,2),第二组[2,4),第三组[4,6),第四组[6,8),第五组[8,10],得到的频率分布直方图如图所示。
(Ⅰ)分别求第三,四,五组的频率;(Ⅱ)该网站在得分较高的第三,四,五组中用分层抽样的方法抽取6个产品。
①已知甲产品和乙产品均在第三组,求甲、乙同时被选中的概率;②某人决定在这6个产品中随机抽取2个购买,设第4组中有X 个产品被购买,求X 的分布列和数学期望。
19. (本小题满分12分)已知四棱柱ABCD-A 1B 1C 1D 1的底面ABCD 是边长为2的菱形,AC ∩BD=O ,AA 1=23,BD ⊥A 1A ,∠BAD=∠A 1AC=60°,点M 是棱AA 1的中点。
(Ⅰ)求证:A 1C ∥平面BMD ; (Ⅱ)求证:A 1O ⊥平面ABCD ;(Ⅲ)求直线BM 与平面BC 1D 所成角的正弦值。
20. (本小题满分1 2分)已知圆1)2(:22=-+y x M ,直线1:-=y l ,动圆P 与圆M 相外切,且与直线l 相切。
设动圆圆心P 的轨迹为E 。
(Ⅰ)求E 的方程;(Ⅱ)定点A (4,2),B ,C 为E 上的两个动点,若直线AB 与直线AC 垂直,求证:直线BC 恒过定点。
21. (本小题满分12分) 已知函数)0(1)(2>++=a x bax x f (Ⅰ)求证:)(x f 必有两个极值点,一个是极大值点,—个是极小值点;(Ⅱ)设)(x f 的极小值点为α,极大值点为β,1)(1)(=-=βαf f ,,求a 、b 的值;(Ⅲ)在(Ⅱ)的条件下,设)()(x e f x g =,若对于任意实数x ,222)(mxx g +≤恒成立,求实数m 的取值范围。
请考生在第22,23,24题中任选一题作答,如果多做,则按所做的第一题计分,作答时请写清题号。
22. (本小题满分10分)选修4-1:几何证明选讲已知PQ 与圆O 相切于点A ,直线PBC 交圆于B ,C 两点,D 是圆上一点,且AB ∥CD ,DC 的延长线交PQ 于点Q 。
(Ⅰ)求证:AC 2=CQ ·AB ;(Ⅱ)若AQ=2AP ,AB=3,BP=2,求QD 。
23. (本小题满分10分)选修4-4:坐标系与参数方程在直角坐标系xOy 中,以原点O 为极点,x 轴的正半轴为极轴建立极坐标系。
已知曲线C 1的极坐标方程为θρ22sin 12+=,直线l 的极坐标方程为θθρcos sin 24+=。
(Ⅰ)写出曲线C 1与直线l 的直角坐标方程;(Ⅱ)设Q 为曲线C 1上一动点,求Q 点到直线l 距离的最小值。
24. (本小题满分10分)选修4-5:不等式选讲已知1,,222=++∈c b a R c b a ,。
(Ⅰ)求证:3||≤++c b a ;(Ⅱ)若不等式2)(|1||1|c b a x x +-≥++-对一切实数a ,b ,c 恒成立,求实数x 的取值范围。
参考答案二模理科数学参考答案4315.23 16.①②④17.(Ⅰ)解:当1=n 时,111151,4=+∴=-a S a ………2分 又1151,51++=+=+ n n n n a S a S 115,n n n a a a ++∴-= ………4分 114n n a a +=-即∴数列{}n a 是首项为114=-a ,公比为14=-q 的等比数列,∴1()4=-nn a ………6分(Ⅱ)n b nn -=-=)41(log 4, ………8分所以211111(2)22n n b b n n n n +⎛⎫==- ⎪++⎝⎭………10分 1111111111(1)()()1232422212n T n n n n ⎡⎤⎡⎤=-+-++-=+--⎢⎥⎢⎥+++⎣⎦⎣⎦………12分 18.(Ⅰ)解:第三组的频率是0.150×2=0.3;第四组的频率是0.100×2=0.2;第五组的频率是0.050×2=0.1 ………3分(Ⅱ)①由题意可知,在分层抽样的过程中第三组应抽到6×0.5=3个,而第三组共有100×0.3=30个,所以甲乙两产品同时被选中的概率为1283301145C P C == ………7分②第四组共有X 个产品被购买,所以X 的取值为0,1,21233266(0)15C C P X C +===;111322268(1)15C C C P X C +===;22261(2)15C P X C ===;所以X 的分布列为01228151515XP………10分 812215153EX =+⨯= ………12分 19.(Ⅰ)证明:连结MO1111////A M MA MO AC AO OC MO BMD AC BMD AC BMD =⎫⎫⇒⎬⎪=⎭⎪⎪⊂⇒⎬⎪⊄⎪⎪⎭平面平面平面 ………3分(Ⅱ)11BD AA BD AC BD A AC ⊥⊥⊥,得面于是1BD A O ⊥AC BD O ⋂=1111116022cos 60ABCD BAD AO AC AB AA AO AC AO ABCD A AC AO BD ⎫⎫⎫⎪⎪∠=⇒==⎬⎪⎪⎪⎪=⎭⎪⎪⎪⎪=⇒⊥⎬⎪⇒⊥⎬⎪∠=⎪⎪⎪⎪⎪⎪⎪⎪⎭⎪⊥⎪⎭平面 ………7分(Ⅲ)如图建立直角坐标系,1(0,0,3)((0,1,0)(0,1,0)A A C B D -111((AC AC C ==-⇒-33()()2222M MB =--1(0,2,0)(1,3)DB BC ==--设平面1BC D 的法向量为(,,)n x y z =11200300y n DB n DB n y z n BC n BC ⎧⎧=⎧⊥⋅=⎪⎪⎪⇒⇒⇒=⎨⎨⎨-+=⊥⋅=⎪⎪⎪⎩⎩⎩………9分cos ,BM n <>= ………11分 所以,直线BM 与平面1BC D………12分 20.(Ⅰ)设(,)P x y2(1)18y x y =++⇒= ………4分(Ⅱ)设直线BC :y kx b =+,1122(,),(,)B x y C x y将直线BC 代入到28x y =中得2880x kx b --=,所以12128,8x x k x x b +==-………5分又因为1122(4,2),(4,2)AB x y AC x y =--=--所以12121212221212(4)(4)(2)(2)(4)(4)(2)(2)(1)[(2)4]()(2)160AB AC x x y y x x kx b kx b k x x k b x x b ⋅=--+--=--++-+-=++--++-+=228(1)8[(2)4](2)160b k k k b b ⇔-++--+-+=2222121632200(6)16(1)0b b k k b k ⇔---+=⇔--+=………8分410b k ⇒=+或42b k ⇒=-+ ………10分所以恒过定点(4,10)- ………12分 21. (Ⅰ)()()()()22'2222122()11a x x ax b ax bx af x xx+-++-==-++令'2()020f x ax bx a =⇒+-=224()0b a ∆=+> ………2分'()0f x ∴=有两实根不妨记为,αβ点 ………4分(Ⅱ)220ax bx a +-=,由韦达定理得2b aαβ+=-()()()()()2222110200110f a b a b f a b ααααβαβαβαββββ=-⎫⎧+++=⎪⇒⇒-+++=⇒+-=⎬⎨=--+=⎪⎩⎭ ……6分00,1,1b αβαβ∴+=⇒==-=,所以2a = ………7分(Ⅲ)因为22()01xxe g x e =>+,所以0m ≥ ………8分 又因为当0x =时,不等式恒成立所以,原问题22x x e e m x -+-⇔≤对一切()(),00,x ∈-∞+∞ 恒成立 法一、设22()x x e e u x x-+-=(()(),00,x ∈-∞+∞ ) ()()()()2'432222()xx x x xx x x ee x x e e e e x e e u x xx------+---+-==设()()()22x x x x h x e e x e e --=--+-,()()'()x x x x h x e e x e e --=+--,()''()x x h x e e x -=-当0x >时,xxe e->,所以''()0h x >,当0x <时,x xe e-<,所以''()0h x >,所以'()h x 在R 上单调递增,又因为'(0)0h = 所以当0x >时, '()0h x <,当0x <时, '()0h x >所以()h x 在(),0-∞上递减,()0,+∞递增,所以()(0)0h x h >= ………10分所以当0x >时, '()0u x <,当0x <时, '()0u x >所以()u x 在(),0-∞上递减,()0,+∞递增,所以0()lim ()1x h x h x →>=所以01m ≤≤ ………12分 法二不妨设0x >()2()2x x h x e e mx -=+--()'()2x x h x e e mx -=--,()''()2x x h x e e m -=+-当1m ≤时,()22x xe em -+≥≥,''()0h x ≥,所以'()h x 在()0,+∞上单调递增,''()(0)0h x h >=所以11 ()h x 在()0,+∞上单调递增, ()(0)0h x h >=,所以当1m ≤时成立………10分当1m >时''()0h x =得0ln(ln(x m x m ==+令当()x 0∈0,x 时''()0h x ≤所以'()h x 在()00,x 上单调递减,''()(0)0h x h <=所以 ()h x 在()00,x 上单调递减,()(0)0h x h <=,与条件矛盾,同理0x <时亦如此 综上01m ≤≤ 12分 22.(Ⅰ)2//~AB CD PAB AQCAQC ACB ACB CQAPA O PAB ACB AQ O QAC CBA AC AB AC AB CQ CQ AC⇒∠=∠⎫⎫⇒∠=∠⎬⎪⇒∆∆⇒∠=∠⎬⎭⎪⇒∠=∠⎭⇒=⇒=⋅为圆切线为圆切线 ………5分(Ⅱ)//113622,AB CD BP AP AB AP PC PQ QC QC PC AQ BP AB ⎫⎫⎪⎪⇒===⎬⎪=⇒==⎬⎪⎭⎪⎪==⎭AP 为圆O切线212AP PB PC QA ⇒=⋅=⇒=又因为AQ 为圆O切线2AQ QC QD QD ⇒=⋅⇒=………10分23.(Ⅰ)221:22C x y +=,4l x += ………5分(Ⅱ)设),sin Q θθ,则点Q 到直线l 的距离d ==≥ ………8分 当且仅当242k ππθπ+=+,即24k πθπ=+(k Z ∈)时取等 ………10分24.解:(Ⅰ)由柯西不等式得,2222222()(111)()3a b c a b c ++≤++++=∴a b c ≤++≤ 所以a b c ++的取值范围是[ (5)12 分(Ⅱ)同理,2222222()[111]()3a b c a b c -+≤+-+++=() ………7分 若不等式2|1|1()x x a b c -++≥-+对一切实数,,a b c 恒成立, 则311≥++-x x ,解集为33(,][,)22-∞-⋃+∞………10分。