九年级上复习冲刺班(二)
九年级英语冲刺班阅读综合—12—二模—完型填空强化(12)
阅读理解（12）阅读综合训练A. Choose the best answer （根据短文内容，选择最恰当的答案): ( 12分)Every country in the world has a flag. A flag is a piece of cloth with a picture or pattern on it. The flag is a symbol that stands for the country. It is a custom in many places for people to fly or hang a flag. The flag tells something about the country and its culture. This may be about its land, its history, or the things that the people do there.Many flags have patterns of stripes(条纹). The flag of Italy has a green stripe, a white stripe and a red stripe. Each stripe tells something about Italy. The white stripe is a symbol of Italy’s snowy mountains. Some flags show pictures. The flag of Canada has a picture of a red maple（枫树）leaf, which is a symbol of the maple trees in Canada. The Mexican flag has both a pattern of stripes and a picture. The picture shows an eagle eating a snake. This picture comes from a very old Mexican story.A flag may also tell about a country’s past. The American flag is called the Stars and Stripes. It has a pattern of fifty stars and thirteen stripes. The fifty stars are a symbol of the fifty states in the country, and the thirteen stripes are a symbol of the country’s first thirteen colonies（殖民地）.However, a flag may be a symbol of a group, a school, or an event like the Olympics. The flag of the Olympics shows five rings of different colors that connect. Each ring is a symbol for a part of the world that joins in the Olympics. The Red Cross is a group that helps people who are in trouble. If a person sees the Red Cross flag, which has a red cross against a white background, he knows he can ask for help. People may fly a flag as a custom on a holiday. Children’s Day in Japan is a holiday when the country wishes for children’s happiness. It is a custom on this day to fly a flag with a picture of a fish.Flags are also used as a way to talk. A flag with patterns can be very helpful to people who do not speak the same language. Sailors on ships use flags to talk to sailors on other ships. They may not speak the same language, but they know what the patters mean. A flag with blue and white squares says “no.” A flag with five stripes that are blue, white, and red says “yes.”1.We can usually see ______ on a flag.A) different languages B) a country’s past C) a picture or pattern D) people2.Which of the following is the flag of Mexico?A) B)C)D)3.We can tell from the American flag that there are ______ states in the country.A) 1B) 3C) 13D) 504. A flag with a red cross against a white background means “______”.A) There is a church here B) The shop’s closedC) You must stop immediately D) We offer people help they need5.Sailors on ships use flags to talk because ______.A) flying or hanging a flag is a custom on shipsB) patterns are the “language” sailors all understandC) flags can be seen easily from a faraway distanceD) it’s considered polite for sailors to talk with flags6.The best title of the passage is ______.A) The Facts of Flags B) The History of FlagsC) The Development of Flags D) The Secrets of FlagsB.Choose the words or expressions and complete the passage（选择最恰当的单词或词语完成短文):（12分）I used to watch her from my kitchen window. She seemed so ___1___ as she made her way through the crowd of boys on the playground. The school was across the street from our home and I would often watch the kids as they played during break. I remember the first day I saw her playing basketball. I watched in wonder as she ran circles around the other kids. She managed to shoot jump shots just over their heads and into the net. The boys always tried to stop her but no one could. I began to notice her at other times, basketball in hand, playing alone.One day I asked her why she practiced so much. She said immediately, “I want to go to college. The only way I can go is to get a scholarship(奖学金). I am going to play college basketball. I want to be the best. My Daddy tells me ___2___ the dream is big enough, the facts don’t count.” Well, I had to give it to her—she was so determined. I watched her through those junior high years and into high school. Every week, she led her school team to ___3___.One day in her senior year, I saw her sitting in the grass, head in her arms. I walked across the street and sat down in the cool grass beside her. ___4___ I asked what was wrong. “Oh, I am just not tall enough.” came a soft reply. The coach told her that at 5’5” she would probably never get to play for a top ranked team—much less offered a scholarship—so she should stop ___5___ college. I could feel her disappointment. I asked her if she had talked to her dad about it yet. She told me that her father said those coaches were wrong. They just did not understand the power of a dream. He told her that if she truly wanted a scholarship and that nothing could stop her except one thing — her own ___6___.The next year, as she and her team went to the Northern California Championship game, she was offered a scholarship and on the college team. She was going to get the college education that she had looked forward to.1.A) beautiful B) crazy C) small D) responsible2.A) if B) although C) because D) unless3.A) sports B) victory C) rest D) future4.A) Luckily B) Suddenly C) Quietly D) Usually5.A) worrying about B) dreaming about C) looking for D) depending on6.A) attitude B) family C) height D) skillC.Read the passage and fill in the blanks with proper words（在短文的空格内填入适当的词，使其内容通顺，每空格限填一词，首字母已给):（14分）It is a great but difficult project to set up a permanent(永久的)human settlement on Mars. Over 200,000 volunteers from more than 120 countries haveapplied to take a one-way trip to Mars.The project, run by a Dutch company named Mars One, aims to send a group of volunteers to Mars, and because of the physiological(生理上的) change in thehuman body after a stay on Mars, there’d be no chance of c___1___ back. So it’s only a one-way trip! However, that hasn’t stop volunteers becoming one of Mars’ first citizens. “This is turning out to be the most welcome job in history,” says Bas Lansdorp, co-founder of Mars One.Day-to-day life on Mars will be not easy. The daily work will i___2___ building greenhouses or doing some research--- all in a lonely environment.Mars is not f___3___ to life. Its atmosphere is so thin that it won’t protectyou from harmful radiation(辐射)from the sun. You can’t breathe the air and it isvery cold on Mars, with an average temperature of around -50°C. There’s norunning water on the surface of Mars. The water is frozen or hidden u___4___.But Mars One says the project is not looking for volunteers with some skill,such as a science degree.I___5___, they are looking for people who have “a deep sense of purpose and responsibility”. As the first group of people living on Mars, volunteers should be “willing to build and keep a healthy r___6___ with the Earth”. They also want volunteers who are“curious, creative and good at finding ways of dealing with all kinds of problems”.The volunteers will receive at least eight years’ training b___7___ they leave Earth, the company says. The first group of 24 volunteers is set to fly to Mars in 2024.D. Answer the questions（根据短文内容回答下列问题): ( 12分)Father was a hardworking man who tried his best to support his wife and three children. He spent all his evenings attending classes, hoping to improve himself so that he could one day find a better-paid job, except for Sundays. Father hardly ate a meal together with his family. He worked and studied very hard because he wanted to provide his family with the best things that money could buy.Whenever the family complained that he was not spending enough time with them, he reasoned that he was doing all this for them. But he often wished to spend more time with his family.The day came when the examination results were announced. To his joy, Father passed with a good mark! Soon after , he was offered a good job as a senior supervisor (主管), which paid quite well.However, the family still did not get to see Father for most of the week. He continued to work very hard, hoping to get the position of manager. Again, whenever the family complained that he was not spending enough time with them, he reasoned that he was doing all this for them. But he often wished to spend more time with his family.Father’s hard work paid off and he was promoted(提升). Excitedly, he decided to hire a maid so his wife did not have to do the housework any more. He also felt that their three-room flat was no longer big enough, and it would be nice for his family to be able to enjoy the comfort of a condominium(公寓). Having experienced the rewards of his hard work many times before, Father decided to further his studies and work at being promoted again. The family still did not get to see much of him again.As expected, father’s hard work paid off again and he bought a beautiful condominium near the coast of Singapore. On the first Sunday evening in their new home, father told his family that he had decided not to take any more courses or pursue(追求) any more promotions. From then on he was going to spend more time with his family.Father did not wake up the next day.1. Father worked seven days a week, didn’t he?_____________________________________________________.2. Why did father work and study hard?_____________________________________________________.3. What was father’s first well-paid job?_____________________________________________________.4. What did the family complain about father?_____________________________________________________.5. Where did father manager to buy a beautiful condominium for his family?_____________________________________________________.6. Do you want to have the “father” in your family? Why or not?_____________________________________________________.完型填空强化训练Choose the words or expressions and complete the passage（选择最恰当的单词或词语完成短文) People from Great Britain brought the English language to North America in the 16th and 17th centuries. And in the past 300 years, there were so many changes in both places that now people can ___1___ tell an English person from an American in the way he or she talks.Many old words disappeared in England but were kept in America. ___2___, 300 years ago people in Great Britain got their water from something they called either a “faucet”, “spigot”, or a “tap”. All these words are still heard in different parts of America, but only “tap” is still ___3___ in England. Americans often make up new words or change old ones. “Corn” is one kind of plant in America and another in England.Also, over the last three centuries the English language has ___4___ thousands of new words for things that weren’t known before. And often, American and English people used two different names for them. A tin can is called “tin” for short in English, but a “can” in America. The word “radio” is used all over the world, including America. But many English people call it a “wireless”. And almost anything having something to do with cars, railroads, etc, has different ___5___ in British and American English.But now American and British English may be growing ___6___ together. One thing is that British people can hear a large amount of American speech daily in movies, on television, or from travelers. Because of this, Americans seem to be influencing the British more and more. So some day, English may even be the same on both sides of the Atlantic.1. A. lively B. hardly C. clearly D. easily2. A. On average B. For example C. After all D. By the way3. A. necessary B. native C. common D. private4. A. discovered B. added C. improved D. learned5. A. names B. types C. degrees D. parts6. A. better B. worse C. closer D. weakerRead the passage and fill in the blanks with proper words（在短文的空格内填入适当的词，使其内容通顺，每空格限填一词，首字母已给)Have you ever done something you didn’t want to do, just to fit in? Or just because your friends wanted you to? That’s peer pressure. Peers are people of your a___1___, such as your friends or schoolmates.Your peers are all around you all the time. They influence your decisions or b___2___ and you learn a lot—both good and bad—by just being around them. You might admire a star player at school. Maybe you notice the popular kids at school and look up to them. Those aren’t necessarily bad things. Being encouraged and influenced by different peers could help you in the long run.H___3___, The people around you can also be negative(消极的) influences. Maybe a star teammate tells you never to pass the ball to a certain player, or a poplar student cheats on tests. Should you try to be like them to fit in?Some kids think being popular or being liked is more important than their own sense of self. It doesn’t make sense, but that’s the problem with peer pressure. You can l___4___ yourself. But you can also find yourself, as Schuyler did when he was asked to go camping last year. “I didn’t want to go camping, but my friends really wanted me to go. Finally, I gave in, and I’m so g___5___ I did. The trip was fantastic! We did a lot of fun activities I would have never done on my own.” Schuyler said.Peer pressure is powerful, but the ability to choose is yours. “If your friends try to get you to do something that you feel w___6___,” says Ian Brennan, an expert who deals with the problem of peer pressure. “Tell them exactly how you feel. And if they’re not cool about it, find new friends.” That can be hard to do, but sometimes it’s necessary. “If your so-called friends are trying to get you to do negative things, do you really think they’re the best friends?” says Nicole S., 16, a high school student. “To me, real friends a___7___ you for who you are and what you believe in, and respect your decisions.”Peer pressure isn’t always something to fear. Your decisions are yours to make. Take the time to make them wisely.。
给中考学生的班会记录(3篇)
第1篇日期：2023年4月15日地点：学校多功能厅班级：九年级（1）班班主任：张老师---班会主题：备战中考，决胜未来班会目的：1. 激励学生备战中考，明确中考的重要性。
2. 分析当前学生的学习状况，找出问题并提出改进措施。
3. 增强班级凝聚力，营造良好的学习氛围。
参会人员：1. 九年级（1）班全体学生2. 班主任张老师3. 家长代表---班会流程：一、开场致辞（张老师）尊敬的同学们、家长代表们：大家好！今天我们召开这次班会，主要目的是为了共同探讨如何备战中考，为我们的未来打下坚实的基础。
中考是我们人生中的一个重要转折点，它关系到我们能否进入理想的学校，能否实现自己的人生目标。
因此，我们要高度重视，全力以赴。
二、学生代表发言（李同学）大家好！我是李同学，今天很荣幸能代表全体同学发言。
首先，我要感谢学校和老师对我们的培养。
进入九年级以来，我们面临着中考的压力，但同时也充满了期待。
我们深知，中考不仅是对知识的检验，更是对我们意志和毅力的考验。
在此，我代表全体同学承诺，我们将以饱满的热情、坚定的信念，迎接中考的挑战。
三、班主任发言（张老师）同学们，家长代表们：首先，我要感谢各位家长对我们班级工作的支持。
接下来，我将从以下几个方面谈谈如何备战中考。
1. 明确目标：每位同学都要明确自己的中考目标，制定合理的学习计划，并为之努力奋斗。
2. 调整心态：面对中考的压力，我们要学会调整心态，保持积极向上的精神状态。
3. 科学复习：要合理安排时间，有针对性地进行复习，提高学习效率。
4. 加强锻炼：保持良好的身体素质，有助于提高学习效率。
5. 家校合作：家长要关心孩子的学习生活，与学校老师保持密切沟通，共同为孩子的成长助力。
四、家长代表发言（王先生）尊敬的老师们、同学们：大家好！我是王先生，作为家长代表，我想说，中考是孩子们人生中的一次重要考验，也是我们家长的责任所在。
我们家长会全力支持学校和老师们的工作，为孩子们创造一个良好的学习环境。
贵州省贵阳市2020年九年级数学中考基础冲刺训练(二)及答案
贵州省贵阳市2020年数学中考基础冲刺训练（二）一．选择题（每题3分，满分30分）1．已知x﹣2y＝﹣2，则3+2x﹣4y的值是（）A．0 B．﹣1 C．3 D．52．如图，在△ABC中有四条线段DE，BE，EF，FG，其中有一条线段是△ABC的中线，则该线段是（）A．线段DE B．线段BE C．线段EF D．线段FG3．下面是几个一样的小正方体摆出的立体图形的三视图，由三视图可知小正方体的个数为（）A．6个B．5个C．4个D．3个4．以下问题，适合用普查的是（）A．调查某种灯泡的使用寿命B．调查中央电视台春节联欢会的收视率C．调查我国八年级学生的视力情况D．调查你们班学生早餐是否有喝牛奶的习惯5．如图，在菱形ABCD中，AB＝2，∠B＝60°，E、F分别是边BC、CD中点，则△AEF 周长等于（）A．B．C．D．36．数轴上的点A表示的数是a，当点A在数轴上向右平移了6个单位长度后得到点B，若点A和点B表示的数恰好互为相反数，则数a是（）A．6 B．﹣6 C．3 D．﹣37．如果方程x2﹣8x+15＝0的两个根分别是Rt△ABC的两条边，△ABC最小的角为A，那么tan A的值为（）A．B．C．D．或8．用蓝色和红色可以混合在一起调配出紫色，小明制作了如图所示的两个转盘，其中一个转盘两部分的圆心角分别是120°和240°，另一个转盘两部分被平分成两等份，分别转动两个转盘，转盘停止后，指针指向的两个区域颜色恰能配成紫色的概率是（）A．B．C．D．9．在平面直角坐标系xOy中，若一次函数y＝kx﹣1（k≠0）的图象经过点P，且y的值随x 值的增大而减少，则点P的坐标可以为（）A．（2，1）B．（﹣2，1）C．（﹣2，﹣1）D．（2，﹣1）10．如图，抛物线y＝x2﹣7x+与x轴交于点A、B，把抛物线在x轴及其下方的部分记作C1，将C1向左平移得到C2，C2与x轴交于点B、D，若直线y＝x+m与C1、C2共有3个不同的交点，则m的取值范围是（）A．﹣＜m＜﹣B．﹣＜m＜﹣C．﹣＜m＜﹣D．﹣＜m＜﹣二．填空题（每题4分，满分20分）11．一次数学测试后，某班40名学生的成绩被分为5组，第1﹣4组的频数分别为12、10、6、8，则第5组的频率是．12．如图，点P是反比例函数y＝（k≠0）的图象上任意一点，过点P作PM⊥x轴，垂足为M．若△POM的面积等于2，则k的值等于．13．如图，正六边形ABCDEF的顶点B、C分别在正方形AGHI的边AG、GH上，如果AB＝4，那么CH的长为．14．若不等式组的解集是﹣1＜x≤1，则a＝，b＝．15．如图，在矩形ABCD中，AB＜BC，点E为CD边的中点，连接AE并延长与BC的延长线交于点F，过点E作EM⊥AF交BC于点M，连接AM与BD交于点N，现有下列结论：①AM＝MF；②ME2＝MC•AM；③＝（sin∠DAE）2；④点N是四边形ABME 的外接圆的圆心，其中正确结论的序号是．三．解答题16．（10分）体育老师为了解本校九年级女生1分钟“仰卧起坐”体育测试项目的达标情况，从该校九年级136名女生中，随机抽取了20名女生，进行了1分钟仰卧起坐测试，获得数据如下：收集数据：抽取20名女生的1分钟仰卧起坐测试成绩（个）如下：38 46 42 52 55 43 59 46 253835 45 51 48 57 49 47 53 5849（1）整理、描述数据：请你按如下分组整理、描述样本数据，把下列表格补充完整：范围25≤x≤2930≤x≤3435≤x≤3940≤x≤4445≤x≤4950≤x≤5455≤x≤59人数（说明：每分钟仰卧起坐个数达到49个及以上时在中考体育测试中可以得到满分）（2）分析数据：样本数据的平均数、中位数、满分率如下表所示：平均数中位数满分率46.8 47.5 45%得出结论：①估计该校九年级女生在中考体育测试中1分钟“仰卧起坐”项目可以得到满分的人数为；②该中心所在区县的九年级女生的1分钟“仰卧起坐”总体测试成绩如下：平均数中位数满分率45.3 49 51.2%请你结合该校样本测试成绩和该区县总体测试成绩，为该校九年级女生的1分钟“仰卧起坐”达标情况做一下评估，并提出相应建议．17．（8分）某商场销售进价为每件x元的上衣，先按进价的2倍作为定价，而实际销售时按定价打八折出售．（1）试用代数式表示：①每件上衣最初的定价为元；②每件上衣打八折后的销售价为元；③n件上衣打八折后的利润为元；（2）若该商场这次共购进每件120元的上衣100件，按以上办法售出80件后，其余按定价的六折销售全部卖完，问该商场在这批上衣买卖中，除支付销售费用1000元外，盈亏情况如何？18．如图，在Rt△ABC中，∠ACB＝90°，AC＝4，BC＝3，点D是边AC的中点，CF⊥BD，垂足为点F，延长CF与边AB交于点E．求：（1）∠ACE的正切值；（2）线段AE的长．19．（10分）某水果店2400元购进一批葡萄，很快售完；又用5000元购进第二批葡萄，所购件数是第一批的2倍，但进价比第一批每件多了5元．（1）求第一批葡萄每件进价多少元？（2）若以每件150元的价格销售第二批葡萄，售出80%后，为了尽快售完，决定打折促销，要使第二批葡萄的销售利润不少于640元，剩余的葡萄每件售价至少打几折（利润＝售价﹣进价）？20．（10分）如图，在等腰Rt△ABC中，∠BAC＝90°，延长BA至点D，连结DC，过点B 作BE⊥DC于点E，F为BC上一点，FC＝FE．连结AF，AE．（1）求证：FA＝FE．（2）若∠D＝60°，BC＝10，求△AEF的周长．21．（10分）某种机器使用若干年后即被淘汰，该机器有一易损零件，为调查该易损零件的使用情况，随机抽取了100台已被淘汰的这种机器，经统计：每台机器在使用期内更换的该易损零件数均只有8，9，10，11这四种情况，并整理了这100台机器在使用期内更换的该易损零件数，绘制成如图所示不完整的条形统计图．（1）请补全该条形统计图；（2）某公司计划购买一台这种机器以及若干个该易损零件，用上述100台机器更换的该易损零件数的频率代替一台机器更换的该易损零件数发生的概率．①求这台机器在使用期内共更换了9个该易损零件的概率；②若在购买机器的同时购买该易损零件，则每个200元；若在使用过程中，因备用该易损零件不足，再购买，则每个500元．请你帮该公司用花在该易损零件上的费用的加权平均数进行决策：购买机器的同时应购买几个该易损零件，可使公司的花费最少？22．（10分）为满足市场需求，某超市在新年来临前夕，购进一款商品，每盒进价是40元．超市规定每盒售价不得少于45元．根据以往销售经验发现；当售价定为每盒45元时，每天可以卖出700盒，如果每盒售价每提高1元，则每天要少卖出20盒．（1）试求出每天的销售量y（盒）与每盒售价x（元）之间的函数关系式；（2）当每盒售价定为多少元时，每天销售的利润P（元）最大？最大利润是多少？23．如图，AB为⊙O的直径，且AB＝4，点C在半圆上，OC⊥AB，垂足为点O，P为半圆上任意一点（不与点C重合），过P点作PE⊥OC于点E，设△OPE的内心为M，连接OM、PM．（1）求∠OMP的度数；（2）当点P在半圆上从点B运动到点A时，求内心M所经过的路径长．24．我们知道：在小学已经学过“正方形的四条边都相等，正方形的四个内角都是直角”，试利用上述知识，并结合已学过的知识解答下列问题：如图1，在正方形ABCD中，G是射线DB上的一个动点（点G不与点D重合），以CG 为边向下作正方形CGEF．（1）当点G在线段BD上时，求证：∠DCG＝∠BCF；（2）连接BF，试探索：BF，BG与AB的数量关系，并说明理由；（3）若AB＝a（a是常数），如图2，过点F作FT∥BC，交射线DB于点T，问在点G 的运动过程中，GT的长度是否会随着G点的移动而变化？若不变，请求出GT的长度；若变化，请说明理由．25．如图，直线y＝x+2与x轴交于点B，与双曲线C1：（x＞0）交于点A，且A点的横坐标为2．（1）求双曲线C1的函数解析式；（2）若P为C1上的一动点，连接PO．①将PO绕O点顺时针旋转90°，得到点P′，问P′是否在某定曲线C1上运动，若是，试求C1的解析式，若不是，说明理由；②若△AOP的面积为，直接写出P点坐标为．参考答案一．选择题1．解：由x﹣2y＝﹣2，得到原式＝3+2（x﹣2y）＝3﹣4＝﹣1．故选：B．2．解：根据三角形中线的定义知线段BE是△ABC的中线，故选：B．3．解：综合三视图，这个立体图形的底层应该有3个，第二层应该有1个小正方体，因此构成这个立体图形的小正方体的个数是3+1＝4个．故选：C．4．解：A、调查某种灯泡的使用寿命，不能使用普查，错误；B、调查中央电视台春节联欢会的收视率被调查的对象都较大，不能使用普查，错误；C、调查我国八年级学生的视力情况被调查的对象都较大，不能使用普查，错误；D、调查你们班学生早餐是否有喝牛奶的习惯被调查的对象较小，故D宜使用普查；故选：D．5．解：如图，连接AC，∵菱形ABCD，∠B＝60°，∴△ABC是等边三角形，∵点E是BC的中点，∴AE＝，∠EAC＝30°，同理可得：AF＝，∠FAC＝30°，∴AE＝AF，∠EAC＝∠FAC，∴△AEF是等边三角形，∴△AEF的周长＝3×＝3．故选：B．6．解：由题意可得：B点对应的数是：a+6，∵点A和点B表示的数恰好互为相反数，∴a+a+6＝0，解得：a＝﹣3．故选：D．7．解：x2﹣8x+15＝0，（x﹣3）（x﹣5）＝0，则x﹣3＝0，x﹣5＝0，解得x＝3或5，①当3和5为直角边时：tan A＝．②当5为斜边时，另一直角边为4，tan A＝．故选：D．8．解：列表如下：红红蓝红紫蓝紫紫共有6种情况，其中配成紫色的有3种，所以恰能配成紫色的概率＝＝，故选：A．9．解：把（2，1）代入一次函数y＝kx﹣1得：2k﹣1＝1，k＝1，因此不可以；把（﹣2，1）代入一次函数y＝kx﹣1得：﹣2k﹣1＝1，k＝﹣1，因此可以；故选：B．10．解：∵抛物线y＝x2﹣7x+与x轴交于点A、B∴B（5，0），A（9，0）∴抛物线向左平移4个单位长度∴平移后解析式y＝（x﹣3）2﹣2当直线y＝x+m过B点，有2个交点∴0＝+mm＝﹣当直线y＝x+m与抛物线C2相切时，有2个交点∴x+m＝（x﹣3）2﹣2x2﹣7x+5﹣2m＝0∵相切∴△＝49﹣20+8m＝0∴m＝﹣如图∵若直线y＝x+m与C1、C2共有3个不同的交点，∴﹣＜m＜﹣故选：C．二．填空题11．解：根据题意得：40﹣（12+10+6+8）＝40﹣36＝4，则第5组的频率为4÷40＝0.1，故答案为：0.1．12．解：∵△POM的面积等于2，∴|k|＝2，而k＜0，∴k＝﹣4，故答案为：﹣4．13．解：正六边形的内角的度数＝＝120°，则∠CBG＝180°﹣120°＝60°，∴∠BCG＝30°，∴BG＝BC＝2，CG＝BC＝2，∴AG＝AB+BG＝6，∵四边形AGHI是正方形，∴GH＝AG＝6，∴CH＝HG﹣CG＝6﹣2，故答案为：6﹣2．14．解：∵解不等式①得：x＞1+a，解不等式②得：x≤﹣∴不等式组的解集为：1+a＜x≤﹣∵不等式组的解集是﹣1＜x≤1，∴1+a＝﹣1，﹣＝1，解得：a＝﹣2，b＝﹣3故答案为：﹣2，﹣3．15．解：∵四边形ABC都是正方形，∴AD∥BF，∴∠DAE＝∠F，∵∠AED＝∠FEC，DE＝EC，∴△ADE≌△FCE（AAS），∴AE＝EF，∵ME⊥AF，∴MA＝NF，故①正确，∵∠EMC＝∠EMF，∠ECM＝∠MEF，∴△MEC∽△MFE，∴ME：MF＝MC：ME，∴ME2＝MC•MF＝MC•AM，故②正确，∵∠AEM＝90°，∠ADE＝∠ECM＝90°，∴∠AED+∠MEC＝90°，∠MEC+∠EMC＝90°，∴∠AED＝∠EMC，∴△ADE∽△ECM，∴＝（）2＝（）2＝（tan∠DAE）2，故③错误，∵∠ABM＝∠AEM＝90°，∴A，B，M，E四点共圆，∴四边形的外接圆的圆心是线段AM的中点，显然点N不是AM的中点，故④错误．故答案为①②．三．解答题16．解：（1）补充表格如下：范围25≤x≤2930≤x≤3435≤x≤3940≤x≤4445≤x≤4950≤x≤5455≤x≤59人数 1 0 3 2 7 3 4 （2）①估计该校九年级女生在中考体育测试中1分钟“仰卧起坐”项目可以得到满分的人数为136×≈61，故答案为：61；②从平均数角度看，该校女生1分钟仰卧起坐的平均成绩高于区县水平，整体水平较好；从中位数角度看，该校成绩中等水平偏上的学生比例低于区县水平，该校测试成绩的满分率低于区县水平；建议：该校在保持学校整体水平的同时，多关注接近满分的学生，提高满分成绩的人数．17．解：（1）①每件上衣最初的定价为2x（元）；②每件上衣打八折后的销售价为2x•0.8＝1.6x（元）；③n件上衣打八折后的利润为n•（1.6x﹣x）＝0.6xn（元）；（2）0.6×120×80+2×120×0.6×20﹣120×20﹣1000＝5240（元），所以该商场在这批上衣买卖中盈利5240元．故答案为2x，1.6x，06xn．18．解：（1）∵∠ACB＝90°，∴∠ACE+∠BCE＝90°，又∵CF⊥BD，∴∠CFB＝90°，∴∠BCE+∠CBD＝90°，∴∠ACE＝∠CBD，∵AC＝4且D是AC的中点，∴CD＝2，又∵BC＝3，在Rt△BCD中，∠BCD＝90°．∴tan∠BCD＝＝，∴tan∠ACE＝tan∠CBD＝；（2）过点E作EH⊥AC，垂足为点H，在Rt△EHA中，∠EHA＝90°，∴tan A＝，∵BC＝3，AC＝4，在Rt△ABC中，∠ACB＝90°，∴tan A＝＝，∴＝，设EH＝3k，AH＝4k，∵AE2＝EH2+AH2，∴AE＝5k，在Rt△CEH中，∠CHE＝90°，∴tan∠ECA＝＝，∴CH＝k，∴AC＝AH+CH＝k＝4，解得：k＝，∴AE＝．19．解：（1）设第一批葡萄每件进价x元，根据题意，得：×2＝，解得x＝120．经检验，x＝120是原方程的解且符合题意．答：第一批葡萄每件进价为120元．（2）设剩余的葡萄每件售价打y折．根据题意，得：×150×80%+×150×（1﹣80%）×0.1y﹣5000≥640，解得：y≥7．答：剩余的葡萄每件售价最少打7折．20．（1）证明：∵BE⊥DC，∴∠EBC+∠ECB＝∠CEF+∠BEF＝90°，∵FC＝FE，∴∠ECB＝∠CEF，∴∠EBC＝∠BEF，∴BF＝FE＝FC，在Rt△BAC中，AF是斜边BC上的中线，∴FA＝FC，∴FA＝FE；（2）解：∵∠D＝60°，∠BAC＝90°，∴∠ACD＝30°，∵△ABC为等腰直角三角形，∴∠ABC＝∠ACB＝45°，∴∠ECF＝∠ACD+∠ACB＝30°+45°＝75°，由（1）得：FA＝FE，AF是斜边BC上的中线，∴AF⊥BC，AF＝BC＝5，∵FC＝FE，∴∠EFC＝180°﹣2∠ECF＝180°﹣2×75°＝30°，∴∠AFE＝90°﹣30°＝60°，∴△AEF是等边三角形，∴△AEF的周长＝3AF＝3×5＝15．21．解：（1）100﹣20﹣50﹣20＝10，补全的条形统计图如图所示：（2）①这台机器在使用期内共更换了9个该易损零件的概率为：P＝＝；②购买机器的同时购买8个该易损零件200×0.2+500×0.8＝440元，购买机器的同时购买9个该易损零件200×0.5+500×0.5＝350元，购买机器的同时购买10个该易损零件200×0.1+500×0.9＝470元，购买机器的同时购买11个该易损零件200×0.2+500×0.8＝440元，因此，购买机器的同时应购买9个该易损零件，可使公司的花费最少．22．解：（1）由题意得销售量y＝700﹣20（x﹣45）＝﹣20x+1600（x≥45）；（2）P＝（x﹣40）（﹣20x+1600）＝﹣20x2+2400x﹣64000＝﹣20（x﹣60）2+8000，∵x≥45，a＝﹣20＜0，＝8000元∴当x＝60时，P最大值即当每盒售价定为60元时，每天销售的利润P（元）最大，最大利润是8000元．23．解：（1）∵△OPE的内心为M，∴∠MOP＝∠MOC，∠MPO＝∠MPE，∴∠PMO＝180°﹣∠MPO﹣∠MOP＝180°﹣（∠EOP+∠OPE），∵PE⊥OC，即∠PEO＝90°，∴∠PMO＝180°﹣（∠EOP+∠OPE）＝180°﹣（180°﹣90°）＝135°，（2）如图，∵OP＝OC，OM＝OM，而∠MOP＝∠MOC，∴△OPM≌△OCM，∴∠CMO＝∠PMO＝135°，所以点M在以OC为弦，并且所对的圆周角为135°的两段劣弧上（和）；点M在扇形BOC内时，过C、M、O三点作⊙O′，连O′C，O′O，在优弧CO取点D，连DC，DO，∵∠CMO＝135°，∴∠CDO＝180°﹣135°＝45°，∴∠CO′O＝90°，而OA＝2cm，∴O′O＝OC＝×2＝，∴弧OMC的长＝＝π（cm），同理：点M在扇形AOC内时，同①的方法得，弧ONC的长为πcm，所以内心M所经过的路径长为2×π＝πcm．24．解：（1）∵四边形ABCD和四边形EFCG是正方形，∴CD＝CB，CG＝CF，∠BCD＝∠FCG＝90°，∵∠DCG＝90°﹣∠BCG，∠BCF＝90°﹣∠BCG，∴∠DCG＝∠BCF；（2）BF+BG＝AB，理由：在Rt△CDG和△CBF中，，∴△CDG≌CBF（SAS），∴DG＝BF，在Rt△ABD中，AD＝AB，∴BD＝AB，∵BD＝DG+BG＝BF+BG，∴BF+BG＝AB；（3）∵BD是正方形ABCD的对角线，∴∠CBD＝∠CDB＝45°，由（2）知，△CDG≌CBF（SAS），∴DG＝BF，∠CDG＝∠CBF＝45°，∴∠DBF＝∠CBD+∠CBF＝90°，∴∠FBT＝90°，∵FT∥CB，∴∠BTF＝∠CBD＝45°，∴∠BFT＝45°＝∠BTF，∴BF＝BT，∴DG＝BT，∴GT＝BG+BT＝BG+DG＝BD＝AB＝a．25．解：（1）当x＝2时，y＝x+2＝2+2＝4，∴点A坐标为（2，4），则k＝2×4＝8，∴双曲线C1的函数解析式为y＝；（2）①点P′在双曲线C2：y＝﹣上运动，设P （m ，） （m ＞0），如图，过点P 作PC ⊥x 轴于点C ，过点P ′作P ′D ⊥y 轴于点D ，则∠PCO ＝∠P ′DO ＝∠POP ′＝90°，∴∠POC ＝∠P ′OD ，又∵OP ＝OP ′，∴△OPC ≌△OP ′D （AAS ），∴OD ＝OC ＝m ，P ′D ＝PC ＝，∴P ′（m ，﹣），则点P ′在双曲线C 2：y ＝﹣上运动．②设P （n ，），如图2，过点A 作AE ⊥y 轴于点E ，作PF ⊥x 轴于点F ，延长EA 、FP 交于点M ，则四边形OEMF 是矩形，M （n ，4），∵A （2，4），∴AM ＝n ﹣2，PM ＝4﹣，∵S △AOP ＝S 矩形OEMP ﹣S △AOE ﹣S △POF ﹣S △AMP ， ∴＝4n ﹣4﹣4﹣（n ﹣2）（4﹣），整理，得：3n2﹣16n﹣12＝0，解得n＝6或n＝﹣（舍），当n＝6时，＝，∴点P（6，）．故答案为：（6，）．。
2024年上海市中考数学冲刺卷(二)
2024年上海市中考数学冲刺卷（二）一、单选题1．下列各数中，无理数是（ ）A ．2πB ．227CD ．0.101001000 2．下列运算中，计算结果正确的是（ ）A ．326(2)4a a =B ．222(2)24a b a ab b +=++C ．632a a a ÷=D ．2233a a -=3．关于某个函数表达式，甲、乙、丙三位同学都正确地说出了该函数的一个特征．甲：函数图像经过点()22-，；乙：函数图像经过第四象限；丙：当0x >时，y 随x 的增大而增大．则这个函数表达式可能是（ ）A ．y x =-B ．4y x =+C ．212y x =D ．4y x =- 4．在知识竞赛中，成绩分为A ，B ，C ，D 四个等级，相应等级的得分依次记为100分，90分，80分，70分．将九年级二班参赛选手的成绩整理并绘制成如下的统计图，九年级二班参赛选手成绩的众数和中位数分别是（ ）A ．100和90B ．100和80C ．80和90D ．80和80.5．如图，已知ABC V ，AD 为三角形ABC 的中线，AB a =u u u r r ，BC b =u u u r r ，则12a b +=r r （ ）A ．BD u u u rB ．DA u u u rC ．AD u u u r D ．DB u u u r6．如图，AB 是⊙O 的弦，C 是弦AB 上一点，且BC ：CA =2：1，连接OC 并延长交⊙O 于D ，若DC =2cm ，OC =3cm ，则圆心O 到弦AB 的距离为（ ）A． B ．(9cm C D ．(25cm -二、填空题7．因式分解：24a a -=．8．已知函数f （x f （8）的值是．9x 的根是．10．关于x 的不等式2101x->-，且1x <，则该不等式的解集为． 11．已知α与β互为补角，3327α=︒'，则β的度数是．12．若关于x 的分式方程1122x mx x x =+++无解，则m 的值为． 13．如果从1，2，3，5，8，13，21，24这8个数中任意选取一个数，那么取到的数恰好是素数的概率是．14．将函数y kx =的图像向下平移2个单位后，经过点()1,0，那么y 的值随x 的增大而．（填“增大”或“减小”）15．某苹果种植合作社通过网络销售苹果，图中线段AB 为苹果日销售量y （千克）与苹果售价x （元）的函数图像的一部分．已知1千克苹果的成本价为5元，如果某天以8元/千克的价格销售苹果，那么这天销售苹果的盈利是元．16．如图，在矩形ABCD 中，点E 在BC 上，将ABE V 沿AE 翻折得到AFE △，点B 的对应点F 恰好落在线段DE 上，线段AF 的延长线交CD 于点G ，:3:2BE CE =，则AF FG的值为．17．如图，已知点G 是正六边形ABCDEF 对角线FB 上的一点，满足3BG FG =，联结FC ，如果EFG V 的面积为1，那么FBC V 的面积等于.18．新定义：有一组对角互余的凸四边形称为对余四边形.如图，已知在对余四边形ABCD 中，10AB =，12BC =，5CD =，3tan 4B =，那么边AD 的长为．三、解答题19．（1）计算：()020241 3.143π-+--；（2）先化简，再求值：222111x x x x x -+--+，其中2x =． 20．解方程组22229024x y x xy y ⎧-=⎨-+=⎩21．已知：如图在ABC V 中，AD 是边BC 上的高，E 为边AC 的中点，14BC =，12AD =，4sin 5B =．求：(1)线段DC 的长；(2)tan EDC ∠的值．22．为加快公共领域充电基础设施建设，某停车场计划购买甲、乙两种型号的充电桩．已知甲型充电桩比乙型充电桩的单价多0.2万元，用16万元购买甲型充电桩与用12万元购买乙型充电桩的数量相等．(1)甲、乙两种型号充电桩的单价各是多少？(2)该停车场计划购买甲、乙两种型号的充电桩共15个，且乙型充电桩的购买数量不超过甲型充电桩购买数量的2倍，求购买这批充电桩所需的最少总费用？23．如图，ABC V 的边AB 是O e 的直径，点C 在O e 上，点D 是边AB 上的一点，点E 和点D 关于BC 对称，DE 交边BC 于点M ，过点D 作DE 的垂线交EC 的延长线于点F ，线段DF 交AC 于点N ．(1)求证：四边形CMDN 是矩形；(2)联结CD ，当CD AB ⊥时，求证：2EF CB AB ME ⋅=⋅．24．已知：如图，在平面直角坐标系xOy 中，抛物线y ＝ax 2＋bx ＋3的图象与x 轴交于点A （﹣1，0）和点B ，与y 轴交于点C ，对称轴是直线x ＝1，顶点是点D ．（1）求该抛物线的解析式和顶点D 的坐标；（2）点P 为该抛物线第三象限上的一点，当四边形PBDC 为梯形时，求点P 的坐标；（3）在（2）的条件下，点E 为x 轴正半轴上的一点，当tan （∠PBO ＋∠PEO ）＝52时，求OE 的长．25．数学家庞斯莱发明过一种玩具（如图1），这种玩具用七根小棍做成，各结点均可活动，AD AF =，CD DE EF FC ===，且O C A F C F <-．使用时，将A ，O 钉牢在平板上，使A ，O 间的距离等于木棍OC 的长，绕点O 转动点C ，则点C 在O e 上运动，点E 在直线BG 上运动，BG AB ⊥．图2是该玩具转动过程中的一幅示意图．(1)判断点A ，C ，E 在同一条直线上吗？请说明理由．(2)当点O ，C ，F 在同一条直线上时．①求证：CD //AB ．②若2OC =，3CD =，1tan 2OAC ∠=，求BE 的长．。
家长会主题班会《九年级中考前动员》教学PPT课件
• 3+5+2（容易题、中档题、难题） • 我们的目标：立足3+5，抓住中档题
二、心态问题
• 每个人都应该有自己的奋斗目标，每件事都应该有一个根基和支撑。 • 你要始终坚信，只要人生还没有结束，一切都不会是定局。
今后100天内的考试安排
二模
3月1、2日
3月7、8日
今后100天内的考试安排
6.攻薄弱学科与发挥优势学科的关系
每个人相对自己而言都有相对优势的学科与相对弱势的学科。同学们要强化优势学科，从而增强自己的信心，并靠它拿 高分。弥补弱势学科，采取确实有效的措施小步子前进，一步一步来提高弱势学科的实力，从而强化自己考试的信心。
7.学习与锻炼、休息的关系
身体是本钱，要把身体锻炼看作我们的第七个学科，没有好的身体，就一切都完了。所以我们的复习计划中要有锻炼身 体的时间，要保证休息的时间和质量，要合理科学地安排饮食，每天至少保证一个鸡蛋，一袋牛奶，多吃些水果、蔬菜 、瘦肉等，尽量少吃方便面。
4、多种方式结合起来复习。
1. 单一的复习方法，易产生消极情绪和疲劳，如果采用交谈复习法、讨论复习法、自我检查复习法多样化 的复习方法，就会激起智力活动的积极性。
今后100天内的考试安排
三、挖掘潜力，攻克薄弱点
同学们在前一阶段的复习中几乎都会遇到过这样一种情况，即在经历了一段时间的复习之后，成绩就再也难有较大提高， 甚至忽高忽低，沉浮不定，这就是人们常说的普遍存在于种考复习中的“高原现象”。
携九年锋芒，战百日时光，乘六月长风，破万里巨浪
汇报：XX
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中考冲刺主题班会教案三篇
四、活动过程
1、主持人引入：百舸争流千帆过，波涛在后永向前。2017年学考的脚步离我们越来越近了。站在人生的第一个十字路口，我想更多的同学对自己的未来充满了信心和希望，那么首先我们来欣赏一段视频： 第一环节：播放地震视频 引导学生思考生命的意义，树立正确的人生观、价值观。 钢铁是怎样炼成的中对生命价值的诠释 我们当下的生命价值：备考学考。体验父母的辛苦 第二环节：学生拍摄父母亲辛勤劳作的画面。
(3)实验操作考试得10分……
六、理智看自己进步
1、戒骄勿燥往前走，平静心态扬势头。
2、期待进步要耐心，
小小进步增信心;
明显进步更动心，
实现愿望最开心。
七、这里奉送三句话：
1、坚持就是一种赢的姿态
2、轻松一点，胜人一筹
3、把最美的风景带到山巅，体验登天的感觉，把最灿烂的笑容留到火热的六月
60天后，我们马上要展开总攻了 ，“敌人”就在面前，它就是考卷，面对强大的它，我们不能退缩，要敢于“亮笔”，笔锋所指，所向披靡
(2)复习间歇适当地运动，劳逸结合
考前的紧张复习，会令人感觉满脑子的公式、定律、单词，昏昏沉沉地非常难受。这时不妨作些适当的运动或娱乐，如散步、打球、听音乐等，一可消除脑部的疲劳、二可让我们的紧张的气氛中解脱出来。但是有输赢的娱乐活动不宜多做，非但不能调节情绪，反而使人难以平静。
(3)平时练习的题量要足够，见过的题型越多，越不害怕。所以不要忽视平时老师发的练习，练习当作考试，考试时就像做练习一样如履平地，就要达到这样的境界。
二、班会的目的
1、通过活动，使学生树立正确的人生观、价值观，培养积极进取，勇于拼搏的精神。
2、帮助学生制定学习目标与树立远大理想，鼓干劲，创辉煌。
九年级英语冲刺班阅读综合—03—二模—完型填空强化(3)
阅读理解（3）阅读综合训练A. Choose the best answer (根据短文内容，选择最恰当的答案) (12分)Dear Sir / Madam,I am writing to complain about the TV advertisement for your product Cheese in a Tube. In my opinion, there is some false information in it, and it also encourages children to have bad eating habits.In the advertisement, there is a popular TV cartoon character who says that Cheese in a Tube is “thebest cheese in the world”. This is, of course, not true. However, I havetwo young children who love the cartoon character in theadvertisement. Now they hope to eat the cheese every day. Theybelieve that your cheese is the best in the world and they don’t wantany other kind.The cartoon character then says that Cheese in a Tube is “good for young kids”. Well, I checked the information on the packet. There certainly isn’t very much cheese in your product – only 5% – and it has more fat and calories(热量) than chocolate! It’s probably one of the unhealthiest things you can buy in the supermarket. Child obesity is a huge problem in our country. Our children are the fattest in the world, and products like yours just make things worse.Finally, the advertisement ends with two beautiful, slim, healthy-looking children sitting in front of the TV. Their mother calls them to come to the kitchen to eat a vegetable salad. The children say they’re watching their favourite cartoon – the same character who is in the advertisement, of course – so what does the mother do? She brings each of them some Cheese in a Tube! The parents eat their salad in the kitchen while the children enjoy the cheese in front of the TV! I believe that it’s good for children and parents to eat together, but obviously (明显地) your company doesn’t.Please change this terrible advertisement. And why don’t you start making healthier foods too?Yours sincerely,Maddy Moore1.“Cheese in a Tube” is a ______.A) TV advertisement B) bad eating habitC) product of a company D) cartoon character2.Maddy’s two children believe the cheese is the best in the world because ______.A) they eat the cheese every day B) they believe what the cartoon tells themC) the cheese is very popular D) the cartoon character is very popular3.Maddy checked the information on the packet of Cheese in a Tube in order to ______.A)prove it has more fat and calories than chocolateB)find out how much cheese there is in the productC)be sure Cheese in a Tube is good for young kidsD)decide which cheese to buy in the supermarket4.The underlined word “obesity” in Paragraph 3 means ______.A) product B) program C)advertisement D)fatness5.In Paragraph 4, Maddy wants to tell us ______.A)the ending of the advertisement is too longB)parents and children should have the same mealC)children should have good eating behaviorsD)family members should enjoy a meal together6.Maddy writes the letter to ______.A)ask the company to stop showing the advertisementB)complain about the bad quality of Cheese in a TubeC)discuss the importance of good eating habits and mannersD)describe a terrible experience of having Cheese in a TubeB. Choose the words or expressions and complete the passage (选择最恰当的单词或短语完成短文) (12分)Have you ever seen the Man in the Moon? If you ___1___ the Moon closely on some nights, you can see the face of the Man in the Moon. Some people say that theycan see an old man carrying sticks. Others say that they can see a girl reading a book.Long long ago, the Romans and Greeks thought that the stars and planets they couldsee were gods living in the sky. They gave these stars and planets the names of theirgods and goddesses and the Moon was ___2___ as Diana, who was also goddess ofthe hunts（狩猎女神）.People used to think that the moon was made of green cheese because of the ___3___ of the Moon’s surface and the small dark areas on it. People also thought that the dark areas formed a kind of face which they called the Man in the Moon. We now know that there are mountains, plains and holes on the Moon’s surface.The word “lunatic” comes from the Latin word “luna” meaning “moon”. People used to believe that anybody who was mad had been affected in some way by the Moon. ___4___ people were supposed to be more mad at the time of the full moon.Werewolves (狼人) are said to be affected by the Moon. In some areas people still think that some people change into wolves at the time of the full moon. But in fact, like vampires (吸血鬼), werewolves ___5___ exist in horror films and books! And we can see them nowhere.There are many superstitions (迷信) connected with the Moon. It is said to be not ___6___ to look at a new moon through glass, but the full moon is the time to make wishes or choose a husband.1.A) measure B) protect C) observe D) describe2.A) used B) written C) acted D) known3.A) colours B) sizes C) shapes D) names4.A) Calm B) Crazy C) Close D) Cute5.A) only B) ever C) seldom D) even6.A) precious B) funny C) lucky D) regularC. Read the passage and fill in the blanks with proper words (在短文的空格内填入适当的词，使其内I am Phil Green. A few years ago I became interested in green issues, and last summer I decided I really wanted to do something to help the planet. I talked to Hazel and the children, and we decided to go green.Since then we ’ve made some big c___1___ to our life. First, we sold ourcars – we had two. That wasn’t a problem because we live in a town and there ’sgood public transport. Anyway, I’ve always liked walking and we ’ve all gotbikes now. We’ve s___2___ eating meat, and started eating more vegetables.We don’t go to the supermarket, but we buy and eat food from a localf___3___, and I grow a lot of our vegetables in the garden. It ’s great! We ’vesaved a lot of money because we don’t buy things we don’t need. Next weekI’m getting some hens, so we can have our own eggs. I can ’t wait. 容通顺。
九年级英语冲刺班阅读综合—05—二模—完型填空强化(5)
阅读理解（5）阅读综合训练A. Choose the best answer（根据短文内容，选择最恰当的答案）( 12分)On Lunar New Year’s Eve on Feb 18, 2015，Beijing had a good day. PM2.5 levels were below 50. However, the nice day ended with firework celebrations atnight.In the first hour after the start of the celebration, PM2.5 levels rose to 500 in certain parts of the city, with the average across the city around 400.According to the China National Environmental Monitoring Center, on Lunar New Year’s Day, air pollution reached “dangerous levels” in 201 Chinese cities, because of fireworks, with more than 40 of them seeing “serious pollution”. As a result, the debate on whether to ban (禁止) fireworks during the Spring Festival is also heating up.Sina surveyed 3,000 Internet users, and results show that only 38 percent of the people support setting off fireworks, and 60 percent are against it.“I support a ban on fireworks,” a netizen (网民) nicknamed ann019 said. “Lighting fireworks can only bring problems: air pollution, disturbing sleep, causing fire and exhausting sanitation workers (环卫工人).”Others thought it to be hard to ban traditions, and lighting fireworks during holiday seasons won’t cause lasting pollution.Some, however, suggest a moderate (温和的) way to solve the problem.“As a tradition, fireworks absolutely add to the festival’s happiness. They shouldn’t be banned totally,” commented netizen Tracy on the China Daily online forum (论坛). “But the time should be reduced. For example, it can be allowed just during New Year’s Eve, the first day of the Lunar New Year and the Lantern Festival.”1.______ caused serious air pollution on Lunar New Year’s Eve.A) The factories B) The cars C) The fireworks D) The bad weather2.______ cities saw serious air pollution on Lunar New Year’s Day.A) 201B) More than 40C) Around 400D) 5003.According to Sina’s survey, over half of the Internet users ______ setting off fireworks.A) are against B) enjoy C) support D) don’t care about4.______ was not mentioned by the netizen nicknamed ann019.A) Exhausting sanitation workers B) Disturbing sleepC) Wasting money D) Causing fire5.According to the passage, we know ______ is a moderate way to solve the problem.A) to ban fireworks totally B) to reduce the time of setting off fireworksC) to get more people to set off fireworks D) to never change the tradition6.What does the passage mainly talk about?A) Air pollution.B) A Survey on the Internet.C) Moderate ways to reduce firework celebrations.D) Whether to ban festive fireworks.B. Choose the words or expressions to complete the passage (选择最恰当的单词或词语,完成短文)(12分)Perhaps the only test score that I remember is the 55 I got when I wasin high school.The test was the final for a course. I remember waiting anxiously as myteacher Mr. Right handed out our papers one after another. It was a rather___1___ test. I heard my classmates groaning (叹息), and I could tell by thegroans that the scores weren’t looking good.Mr. Right put my paper on my desk. There in big red numbers, circled to draw attention , was my score, 55! I lowered my head, and covered the score up quickly. A 55 is not something that you wanted your classmates to see. “The scores were not very good, none of you ___2___,” Mr Right said. “The highest score in the class was a 55.”A 55. That’s me! ___3___ my sad look didn’t look so bad. I had the highest score. I felt a lot better.I walked home alone that day with the low but high score. My mother knew that I had a big test that day and asked me as soon as I got home, “How did you do in your test?” “I got 55,” I said. A frown(皱眉) now stood on my mother’s face. I knew I had to ___4___ immediately. “But Mum, I had the highest score in the class,” I proudly stated (陈述). I thought that explanation would make a difference. “You failed!!” my mother replied. “But it’s the highest!” I insisted. “I don’t care what scores others had, you failed. What matters is what you do!” my mother firmly (坚定地) said.For years, my mother was ___5___ in that way. It didn’t matter what others did, it only mattered what I did and that I did it excellently.We often don’t understand the ___6___ of good parents until we ourselves stand in the parents’ shoes. My mother’s words have carried me throughout life.1.A) boring B) difficult C) strange D) interesting2.A) failed B) missed C) passed D) won3.A) Suddenly B) Finally C) Certainly D) Slowly4.A) insist B) explain C) prove D) answer5.A) always B) seldom C) still D) once6.A) courage B) kindness C) trouble D) wisdomC. Read the passage and fill in the blanks with proper words (在短文的空格内填入适当的词,使内容通顺, 每空格限填一词，首字母已给) (14分)More play and less work makes for more talented(有才能的) children. Some officials suggested that school hours for children aged 7 to 12 should be reduced,and that they should be e___1___ to spend at least an hour a day on team sports.All work and no play makes children depressed. Becky, an 8-year-old girl, used to be happy when she finished classes every day, but now, life has becomeunhappy. To make sure she has enough time for the lessons, she has to study until 11 at night to finish her homework.Some ideas are offered for helping cultivate(培养) kids’ talents. The ideas i___2___ cutting down classroom hours, introducing more team sports for children, getting parents to stop putting too much pressure on children and some other suggestions. It is believed that all these can help train young people to be confident.“I used to go to the park with my parents on weekends before because I like playing tennis with my dad and I can play well,” a boy said, “But now, I h___3___ have time to do that any more.”“I would like to try other things, such as drawing,” Nara said. She was interested in drawing, but her parents thought it was not a bright way for her.Children now spend more time doing homework than playing, and we all know it’s quiten___4___ for them to have plenty of sleep. A lot of homework and heavy school bags are driving more young children away from a joyful childhood.Parents believe that b___5___ well in school is a sure way to make their children have a bright future. The study showed that about 80 percent of parents said they expected their children to get a university degree or some form of higher education. About 15 percent of students in primary school and 40 percent in middle school said they thought their parents were not s___6___ with their marks.“Parents must always be willing to talk to their children and make them happy,” an educator advised, “Encourage him or her to be confident when he or she faces d___7___. Parents should know what their children like and what they want.”D. Answer the questions (根据短文内容回答下列问题) （12分）Students in the US don’t begin their spring break at the same time. Itdepends on where they live. While students from one town are on vacation,their neighbors in the next town may have classes as usual.You may have heard of it from many hit US TV shows and movies. It’susually in the middle of March, when characters on shows like Gossip Girl get aweek off from classes, go to the beach and throw big parties. It’s spring break – or, “party time!”Unlike our semester, which starts in late February or early March this year, American schools begin as early as January. So in late March and April, most American schools, ranging from kindergartens to colleges, give students one to two weeks off school.College students often take planes to places like Florida or Cancun, Mexico. They relax on the beach, enjoy cold drinks and get a tan.Younger kids take trips with their parents, visiting a new state or even a new country. Sometimes teachers lead overseas trips for groups of students. On a ten-day trip, for example, students may go on a tour through Spain, France, and Italy, which gives them a great chance to see different parts of the world.Having a “staycation”, which means being a tourist in your own city, is another popular trend (趋势). You can visit local art galleries (美术馆), museums or have a big meal in a nice restaurant.For those who are not in the mood to go out, spring break is a good time to catch up with hit TV series or play video games.There are also students who want a different kind of spring break experience. Instead of partying, they choose to do community service, help with disaster-hit areas and do other volunteering work.No matter how they’ve spent the break, one thing is for sure – students return to school feeling refreshed (恢复活力的) and ready to finish the school year.1.Students in the US begin their spring break at a different time, don’t they?_____________________________________________________________________.2.How long does the spring break usually last?_____________________________________________________________________.3.Where do college students often go during the spring break?_____________________________________________________________________.4.According to the passage, how can students spend the spring break differently?By __________________________________________________________________.5.What’s the advantage of having a spring break?_____________________________________________________________________.6.If you are given the spring break, how will you spend it? Why?_____________________________________________________________________.完型填空强化B. Choose the words or expressions to complete the passage (选择最恰当的单词或词语,完成短文)(12分)Recently the unmanned aircraft which are called drones (无人驾驶飞机) have come into use for a number of business purposes. Basically, a drone is a flying robot.The aircraft（飞行器）may be remotely controlled or can fly automatically through flight programs in their systems. The little planes used to be very ___1___. In the past, they were mostly used in the military（军事）. But as they have dropped in price, more people have begun to use them. Rescue workers and farmers are among the new users.A company in France is using drones to help farmers examine their crops and limit the amount of fertilizer（肥料）they use. The fast development of computer technology, image sensing devices（图像感应设备）, satellite navigation （卫星导航）and cell phones has led to lower-priced drones. Researchers and developers have learned how to build smaller and less-costly drones. Moviemakers are using drones to film from the sky. Historians (历史学家) use them when they explore ancient buildings. Rescue workers use them to ___2___ people. And now farmers are using them to monitor their crops.Romain Faroux is a French businessman who starts companies. His father was a farmer. He believed drones could help farmers. He helped ___3___ a company that developed a small drone that could be controlled by people on the ground. They called it “Agridrone (农业无人机).” It uses a special “optical sensor（光学感应器）” to examine crops.The technology used is similar to that used by smartphones ___4___ it has wings. A computer program directs the drone to fly over the crops. The sensor on the drone records four different-colored “bands” of sunlight（太阳光带）that are reflected off（反射）the crops.Jean-Baptiste Bruggeman is a farmer. He says the drone flies over his crops at different time of the season. He says this provides a lot of ___5___ about his crops. The drone pictures show him the exact amount of fertilizer the crops need. It also shows exactly where the fertilizer is needed.Romain Faroux says farmers use information gathered by the Agridrone to place fertilizer only in areas where it was needed. This saves money and reduces pollution. ___6___ they used the drones, farmers would put the same amount of fertilizer everywhere. Drones also save time because farmers can examineup to three hectares（公顷）in about a minute.() 1. A. cheap B. expensive C. low D. high() 2. A. look out B. look for C. look up D. find out() 3. A. make B. invent C. create D. discover() 4. A. beside B. besides C. except D. including() 5. A. advice B. news C. notes D. information() 6. A. Before B. After C. If D. AlthoughC. Read the passage and fill in the blanks with proper words（在短文的空格内填入适当的词，使其内容通顺，每空格限填一词，首字母已给)Passage 1While the rest of the world is waking up as the weather turns warm, our bodies may not respond the same way. Many of us may share the same feeling of sleepiness as we meet spring. A___1___ spring sleepiness is not an illness, the following tips might be essential for those who really need to stay awake. 1.Don't sleep more, exercise moreEight hours of sleep is usually enough for adults. Getting longer sleep may make people sleepier. I___2___, more or less increase the level of your physical activity, which will help to send more oxygen to the brain, making us feel awake and energetic.2.Have proper caffeine(咖啡因)A cup of coffee or tea that contains a good amount of caffeine is good for the health, and is important to keep us awake for important occasions. However, too much coffee may c___3___ a fast heartbeat, anxiety and other symptoms(症状) that may be linked to heart problems.3.Splash cold water on your face.If a cup of coffee doesn’t keep you awake l___4___ enough, try splashing(泼) cold water on your face, which is always refreshing.4.Get some fresh airMake sure that air flows properly in your classroom and bedroom. Bad air flow will lead to less oxygen, which will have effect on the brain’s p___5___. You can also go outdoors to get close to nature.5.Drink enough waterTry always to have a bottle of water next to you, as it can help to f___6___ spring sleep. You can also add sliced of lemon to make your answer vitamin rich.6.Find the natural scent that awakes youSmelling a plant or herb is one way to wake up your s___7___. Try placing a pot of fresh mint(薄荷) on your desk.Passage 2Naturally, American schoolchildren love holidays. And they get a lot of them each year. They not only have n___1___ holidays such as Thanksgiving Day and Presidents’ Day but also get longer breaks in the spring and during the summer holidays. In fact, kids in the US only go to school for 180 days a year. To students, holidays are perfect. However, parents think there are advantages and disadvantages.On one hand, school holidays a___2___ families to spend time together. Many American parents take time off from work during June, July or August to travel with their children on vacation either in the US orin a foreign country. On the other hand, schoolchildren get much more time off school than parents get vacation time. This means that parents with young children may have to pay more in babysitting or daycare costs. As well, the long summer holidays mean that students s___3___ get bored.B___4___ going on trips with their parents, American students enjoy taking part in different kinds of activities during the holidays. For example, some kids enjoy summer camps and outdoor adventure holidays. Such trips are great for adventurous students. They also have a lot to offer students who aren’t usually interested in traditional PE activities. You can take c___5___ in survival skills. For example, students learn how to make a camp in the forest, w___6___ wild food they can eat and how to find their way back to the center.Students who are not excited about summer camps and outdoor adventures may have lessons in computer game design, filmmaking and photography during the holidays. Finally, the traditional school trip to foreign countries is always popular. Students can p___7___ their foreign language skills and experience everyday life in a different culture.。
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九年级（上）数学期末复习试题（二）(满分120分)
一、选择题（本题共20分，每小题2分）
1.下列各式中，正确的是（ ）
A ．3=-
B ．3-
C 3=±
D 3±
2. 下列二次根式中，最简二次根式是（ ）．
3.下列方程中是关于x 的一元二次方程的是（ ） A ．2
210x x += B ．20ax bx c ++= C ．(1)(2)1x x -+= D ．223250x xy y --= 4.方程(x +1)(x －2)=x +1的解是（ ）
A.2
B.3
C.－1，2
D.－1，3
5. 下列关于x 的一元二次方程中，有两个不相等的实数根的方程是
A ．042=+x
B ．01442=+-x x
C ．032=+-x x
D ．0122
=-+x x
6.如图，点A 、B 、C 、D 、O 都在方格纸的格点上，若△COD 是由△AOB 绕点O 按逆时针方向
旋转而得，则旋转的角度为（ ）
A.30°
B.45°
C. 90°
D.135° 7.下列图形中，中心对称图形有（ ）
A ．4个
B ．3个
C ．2个
D ．1个
8.如图，⊙O 的弦AB 垂直平分半径OC ，若AB =6，
则⊙O 的半径为（ ） A. 2 B.2 2 C.22 D.62
9. 从1～9这九个自然数中作任取一个，是2的倍数的概率是 （ ）
A ．29
B ．49
C ．59
D ．23
10．圆锥的母线长是3，底面半径是1，则这个圆锥侧面展开图圆心角的度数为（ ）
A ．90°
B ．120°
C ．150°
D ．180°
二、填空题（本题共18分，每小题3分）
1
x 的取值范围是 .
2.计算：=⨯123 ．
3. 在一个不透明的布袋中，有黄色、白色的乒乓球共10个，这些球除颜色外都相同．小
刚通过多次摸球实验后发现其中摸到黄球的频率稳定在60%，则布袋中白球的个数很可能是 个．
4. 如果一个扇形的弧长等于它的半径，那么此扇形称为“等边扇形”. 则半径为2的“等
边扇形”的面积为 ．
5．已知P 是⊙O 外一点，PA 切⊙O 于A ，PB 切⊙O 于B .若PA ＝6，则PB ＝ ．
6．若一个正多边形的每一个外角都是36°，则这个正多边形的边数为__________．
三、计算（本题共24分，每小题4分）
1.((
3． 4.
5．2
13675÷⨯ 6. 已知2222x y x y ==-求的值
四．解方程：（本题共20分，每小题5分）
1． (25)410x x x -=- 2．24120x x +-=．
3．用适当的方法解下列一元二次方程：
（1）.2540x x +-=； (2). 3(1)2(1)y y y -=-
五．解答题（本题共38分）
1(6分)已知关于x 的一元二次方程22(21)2x k x k =+-+有两个实数根为x 1，x 2．
（1）求k 的取值范围；
（2）设y = x 1 + x 2，当y 取得最小值时，求相应k 的值，并求出最小值．
2．（7分）如图，在△ABC 中，120,C ∠=︒,4AC BC AB ==，半圆的圆心O 在AB 上，且与
AC ，BC 分别相切于点D ，E . （1）求半圆O 的半径； （2）求图中阴影部分的面积.
3．（6分）一个袋中有3张形状大小完全相同的卡片，编号为1,2,3，先任取一张，将其编
号记为m 再从剩下的两张中任取一张，将其编号记为n .
（1）请用树状图或者列表法，表示事件发生的所有可能情况；
（2）求关于x 的方程20x mx n ++=有两个不相等实数根的概率.
4．如图(7分)O为正方形ABCD对角线AC上一点，以O为圆心，OA长为半径的⊙O与BC 相切于点M.
（1）求证：CD与⊙O相切；
（2）若⊙O的半径为1，求正方形ABCD的边长.
5．(12分)操作：在△ABC中，AC＝BC＝2，∠C＝90°，将一块等腰三角板的直角顶点放在斜边AB的中点P处，将三角板绕点P旋转，三角板的两直角边分别交射线AC、CB于D、E两点．如图①、②、③是旋转三角板得到的图形中的3种情况，研究：（1）三角板绕点P旋转，观察线段PD与PE之间有什么数量关系？并结合图②说明理由．
（2）三角板绕点P旋转，△PBE是否能成为等腰三角形？若能，指出所有情况（即写出
△PBE为等腰三角形时CE的长）；若不能，请说明理由．。