兰州市中考试卷(含答案)

(2011·甘肃兰州)市初中毕业生学业考试数学试卷 注意事项: 1.全卷共150分,考试时间120分钟. 2.考生必须将姓名、准考证号、考场、座号等个人信息填(涂)写在答题卡的相应位置. 3.考生务必将答案直接填(涂)写在答题卡的相应位置. 一、选择题(本题15小题,每小题4分,共60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.) (2011•甘肃兰州)1.下列方程中是关于x的一元二次方程的是C

A. 2210xx B. 20axbxc

C. (1)(2)1xx D. 223250xxyy (2011•甘肃兰州)2.如图,某反比例函数的图像过(-2,1),则此反比例函数表达式为B A. 2yx B. 2yx C. 12yx D. 12yx

(2011•甘肃兰州)3.如图,AB是⊙O的直径,点D在AB的延长线上,DC切⊙O于点C,若∠A=25°,则∠D等于C A. 20° B. 30° C. 40° D. 50°

(2011•甘肃兰州)4.如图,A、B、C三点在正方形网格线的交点处,若将△ABC绕着点A逆时针旋转得到△ACB则tanB的值为B

A. 12 B. 13 C. 14 D. 24 (2011•甘肃兰州)5.抛物线221yxx的顶点坐标是A A. (1,0) B. (-1,0) C. (-2,1) D. (2,-1) (2011•甘肃兰州)6.如图是由几个小立方块所搭几何体的俯视图,小正方形的数字表示在该位置的小立方块的个数,这个几何体的主视图是D

(2011•甘肃兰州)7.一只盒子中有红球m个,白球8个,黑球n个,每个球除颜色外都相同,从中任取一个球,取得白球的概率与不是白球的概率相同,那么m与n的关系是D A. m=3,n=5 B. m=n=4 C. m+n=4 D. m+n=8 (2011•甘肃兰州)8.点M(-sin60°,con60°)关于x轴对称的点的坐标是B

A. (32, 12) B. (32,12) C. (32,12) D. (12,32) (2011•甘肃兰州)9.如图所示的二次函数2yaxbxc的图像中,刘星同学观察得出了下面四条信息: (1)24bac>0;(2)c>1;(3)2a-b<0;(4)a+b+c<0.你认为其中错误的有D A. 2个 B. 3个 C. 4个 D. 1个

(2011•甘肃兰州)10.用配方法解方程250xx时,原方程应变形为C A. 2(1)6x B. 2(2)9x C. 2(1)6x D. 2(2)9x (2011•甘肃兰州)11.某校九年级学生毕业时,每个同学都将自己的相片向全班其他同学各送一张留作纪念,全班共送了2070张相片,如果全班有x名学生,根据题意,列出方程为A

A. (1)2070xx B. (1)2070xx

C. 2(1)2070xx D. (1)20702xx (2011•甘肃兰州)12.如图,⊙O过点B、C,圆心O在等腰Rt△ABC的内部,∠BAC=90°,OA=1,BC=6.则⊙O的半径为C

A. 6 B. 13 C. 13 D. 213

(2011•甘肃兰州)13.现给出下列四个命题:①无公共点的两圆必外离;②位似三角形是相似三角形;③菱形的面积等于两条对角线的积;④对角线相等的四边形是矩形. 其中真命题的个数是A A. 1 B. 2 C. 3 D. 4 (2011•甘肃兰州)14.如图,正方形ABCD的边长为1,E、F、G、H分别为各边上的点,且AE=BF=CG=DH,设小正方形EFGH的面积为s,AE为x,则s关于x的函数图象大致是B

(2011•甘肃兰州)15.如图,矩形ABCD的对角线BD经过坐标原点,矩形的边分别平行与坐标轴,点C在反比例函数221kkyx的图像上.若点A的坐标为(-2,-2),则k的值为D A. 1 B. -3 C. 4 D. 1或-3 二、填空题(本题5小题,每小题4分,共20分) (2011•甘肃兰州)16.如图,OB是⊙O的半径,点C、D在⊙O上,∠DCB=27°,则∠OBD= 63度.

(2011•甘肃兰州)17.某水库大坝的横截面是梯形,坝内斜坡的坡度i=1:3,坝外斜坡的坡度i=1:1,则两个坡角的和为 75° . (2011•甘肃兰州)18.已知一个半圆形工件,未搬动前如图所示,直径平行于地面放置,搬动时为了保护圆弧部分不受损伤,先将半圆如图所示的无滑动翻转,使它的直径紧贴地面,

再将它沿地面平移50m,半圆的直径为4m,则圆心O所经过的路线长是 m.(结果用π表示)

(2011•甘肃兰州)19.关于x的方程2()0axmb的解是12x,21x(a,m,b均为常数,a≠0).则方程2(2)0axmb的解是 x1= -4,x2= -1 .

(2011•甘肃兰州)20.如图,依次连结第一个矩形各边的中点得到一个菱形,再依次连结菱形各边的中点得到第二个矩形,按照此方法继续下去,已知第一个矩形的面积为1,则第n个矩形的面积为

.

三、解答题(本题8小题,共70分,解答时写出必要的文字说明、证明过程或演算步骤.) (2011•甘肃兰州)21. (2011甘肃兰州,21,7分)已知a是锐角,且sin(a+15°)=32.

∴α+15°=60° ∴α=45° (2011•甘肃兰州)计算84cosα0(3.14)+tanα+11()3的值. -4cosα—(-3.14)0+tanα+=2—4×—1+1+3=3

(2011•甘肃兰州)22.(本小题满分7分)如图,有A、B两个转盘,其中转盘A被分成4等份,转盘B被分成3等份,并在每一份内标上数字.现甲、乙两人同时各转动其中一个转盘,转盘停止后(当指针指在边界线上时视为无效,重转),若将A转盘指针指向的数字记为x,B转盘指针指向的数字记为y,从而确定点P的坐标为P(x,y).记s=x+y. (1)请用列表或画树状图的方法写出所有可能得到的点P的坐标; (2)李刚为甲、乙两人设计了一个游戏:当s<6时甲获胜,否则乙获胜.你认为这个游戏公平吗?对谁有利?

解:(1)列表: …… 4分 (2)∵P(甲获胜)

= ……………………………………………………5分

y x

2 4 6

1 (1,2) (1,4) (1,6) 2 (2,2) (2,4) (2,6) 3 (3,2) (3,4) (3,6) 4 (4,2) (4,4) (4,6) P(乙获胜)= ……………………………………………6分 ∴这个游戏不公平,对乙有利。 ……………………………………………7分

(2011•甘肃兰州)23.(本小题满分7分)今年起,兰州市将体育考试正式纳入中考考查科目之一,其等级作为考生录取的重要依据之一.某中学为了了解学生体育活动情况,随即调查了720名初二学生,调查内容是:“每天锻炼是否超过1小时及未超过1小时的原因”,利用所得的数据制成了扇形统计图和频数分布直方图.根据图示,解答下列问题: (1)若在被调查的学生中随机选出一名学生测试其体育成绩,选出的是“每天锻炼超过1小时”的学生的概率是多少? (2)“没时间”锻炼的人数是多少?并补全频数分布直方图; (3)2011年兰州市区初二学生约为2.4万人,按此调查,可以估计2011年兰州市区初二学生中每天锻炼未超过1小时的学生约有多少万人? (4)请根据以上结论谈谈你的看法.

解:(1) ∴选出的恰好是“每天锻炼超过1小时”的学生的概率是………………2分 (2)720×(1)12020=400(人) ∴“没时间”锻炼的人数是400 ……4分 (计算和作图各得1分 )

(3)2.4×(1-)=1.8(万人) ∴2010年兰州市初二学生每天锻炼未超过1小时 约有1.8万人. ……………………………………………………………6分 (4)说明:内容健康,能符合题意即可. ………………………………………7分

(2011•甘肃兰州)24.(本小题满分7分)如图,一次函数3ykx的图像与反比例函数myx(x>0)的图像交与点P,PA⊥x轴于点A,PB⊥y轴于点B.一次函数的图像分别

交x轴、y轴于点C、点D,且DBPS=27,OCCA=12. (1)求点D的坐标; (2)求一次函数与反比例函数的表达式; (3)根据图像写出当x取何值时,一次函数的值小于反比例函数的值?

解:(1)根据题意,得: ………………………………………………………………………………1分

(2)在△和△中,

,

∴ …………………………………2分 ∵ ∴

△中,∵ ∴………………………………………3分 ………………………………………4分 一次函数的解析式为: ………………………………………………………………5分 反比例函数解析式为: ………………………………………………………………………6分

(3)如图可得: ……………………………………………………………7分

(2011•甘肃兰州)25. (本小题满分9分)如图,在单位长度为1的正方形网格中,一段圆弧经过网格的交点A、B、C. (1)请完成如下操作: ①以点O为原点、竖直和水平方向所在的直线为坐标轴、网格边长为单位长,建立平面直角坐标系;②用直尺和圆规画出该圆弧所在圆的圆心D的位置(不用写作法,保留作图痕迹),并连结AD、CD. (2)请在(1)的基础上,完成下列问题: ①写出点的坐标:C 、D ; ②⊙D的半径= (结果保留根号); ③若扇形ADC是一个圆锥的侧面展开图,则该圆锥的地面面积为 (结果保留π); ④若E(7,0),试判断直线EC与⊙D的位置关系并说明你的理由.

解:(1)①建立平面直角坐标系………………………………………………1分 ②找出圆心 …………………………………………………………3分 (2)①C(6,2);D(2,0) …………………………………………5分 每个点的坐标得1分

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2023年甘肃省兰州市中考语文真题(附答案解析)

2023年甘肃省兰州市中考语文真题(附答案解析)

2023年兰州市初中学业水平考试语文(附答案解析)注意事项1.全卷共120分,考试时间120分钟2.考生必须将姓名、准考证号、考场号、座位号等个人信息填(涂)写在答题卡上。

3.考生务必将答案直接填(涂)写在答题卡的相应位置上一、基础·运用(24分)班级开展主题为“人与自然”的综合性学习活动,请你完成下列任务【文字与自然】1.阅读下面文字,完成下面小题。

我国古代关于彩虹的最早的文字记载()就在甲骨文里:有出虹自北,饮于河这句话说的是有一道彩虹出现在北边的天空中,一直_______到黄河里喝水。

甲骨文小景横书古人看见时隐时现的虹桥,于是浮想联piān(),把它看作有灵性的龙蛇类的神物,能够低头喝河水。

有人把它描述成两边各有一个头的神兽。

“虹”字最原始的写法就是对这种神兽形象的描绘。

后来,人们才把它改成了更容易读写的形声字,用“工”旁表音,用“虫”旁表意。

早期古文字里与天象、岁时有关的字身上有很多故事,这些字的形体特征和文化内涵向我们展现了古人对宇宙的观察和认识。

我们不仅能从中_______到古人的智慧,更能感受到古人探索自然奥秘的恒心,以及_______与大自然和谐相处之道的不懈努力(1)给加点字注音,根据拼音写汉字。

文字记载.()浮想联piān()(2)依次填入语段横线上的词语,恰当的一项是()A.延续领会寻求B.延续领略寻找C.延伸领会寻找D.延伸领略寻求(3)语段中画线句子的主干是?【答案】(1)①.zǎi②.翩(2)D(3)身上有故事【解析】【小问1详解】本题考查字音和字形。

①空,记载(jìzǎi):把事情写在书册上。

②空,浮想联翩(fúxiǎng lián piān):形容一个又一个想法不断地涌现出来。

【小问2详解】本题考查词语的运用。

①空,“延续”的意思是:持续;继续。

“延伸”的意思是:延长伸展。

结合句子“饮于河这句话说的是有一道彩虹出现在北边的天空中”“一直”“到黄河里喝水”可知,这里要表达的意思是“彩虹”的意义延长伸展到黄河里喝水。

【中考真题】2023年甘肃省兰州市中考英语真题(附答案)

【中考真题】2023年甘肃省兰州市中考英语真题(附答案)

2023年甘肃省兰州市中考英语真题学校:___________姓名:___________班级:___________考号:___________一、完形填空I told my parents that I wanted to visit my grandparents alone. I didn’t see them for agrandparents’ and encouraged me to solve the problems by myself.When the 4 came, my parents came to the train station to see me off. While we were waiting for the train, my father gave me a letter. He told me I could read it if I felt afraid on the way. With the train moving slowly, I said 5 to them.I looked out of the window and saw green farms and beautiful villages along the way. And I was very 6 . At one station, a tall and heavy man got on the train and sat next to me. I got a little nervous. Suddenly, I 7 what my father gave me and told me at the station. I opened the letter. It said, “Never be afraid. I’m together with you in this train.” Seeing this, I began to feel relaxed. I tried to speak with the man and he talked with me so 8 . We both felt quite happy all the way.In our life, there are many times when we need to do something 9 . We needn’t be afraid because our parents are always with us. Remember we should try 10 best to solve all the problems by ourselves.1.A.missed B.helped C.thanked D.understood 2.A.hardly B.still C.seldom D.never 3.A.at B.for C.with D.to 4.A.day B.week C.month D.year 5.A.sorry B.hello C.goodbye D.no 6.A.sad B.happy C.bored D.upset 7.A.borrowed B.refused C.remembered D.forgot 8.A.kindly B.angrily C.clearly D.shyly 9.A.slowly B.carefully C.quietly D.alone 10.A.my B.his C.our D.their二、阅读单选What people eat and how they eat are different from place to place. For example, in Lanzhou, people usually have beef noodles for breakfast while cheese sandwiches are very popular in London. Here are the recipes(烹饪法) of making them. You can have a try if youFood: beef noodlesIngredients(食材): beef, noodles, beef soup, mooli(白萝卜), garlic leek (蒜苗) and red chili oilSteps:First, wash beef and boil it for about 1-2 hours.Next, wash mooli and garlic leek, and cut them into pieces.Then, make beef soup very hot, and put mooli pieces into it.After that, cook noodles then put them into a bowl.Finally, spoon beef soup over the noodles, then add beef, garlic leek pieces and red chili oil. Tips: You may add an egg or some vegetables as you like while eating.Food: cheese sandwichesIngredients: bread pieces, butter, cheese, tomatoes, onions, lettuce(生菜)Steps:First, put some butter on a piece of bread.Next, cut up a tomato and an onion, and put them on a sandwich.Then, put some cheese on the sandwich.After that, put some lettuce on the cheese.Finally, put another piece of bread on top.Tips: You may add meat or vegetables as you like in a sandwich.11.How many recipes are talked about in the passage?A.One.B.Two.C.Three.D.Four. 12.When do people usually have beef noodles in Lanzhou according to the passage?A.In the morning.B.In the afternoon.C.In the evening.D.At night. 13.When noodles are cooked, ________.A.make beef soup really hot B.put them into a bowlC.boil them for about 1-2 hours D.cut garlic leek into pieces 14.Firstly, you can put some ________ on a piece of bread when making a cheese sandwich. A.tomatoes B.onions C.butter D.lettuce 15.What information can we get from the tips in the passage?A.People refuse to try new food.B.We should eat fresh food every day.C.More and more people like eating fast food.D.We can add some more ingredients as we like while eating.Pandas are very popular in China. People around the world like this black and white animal very much, too. Ya Ya is among them. Now let’s know more about Ya Ya.When Ya Ya was born in the Beijing Zoo, she weighed about 0.14 kilos. For a research and protection plan, she was taken to the Memphis Zoo in Tennessee in 2003. But there was something wrong with her fur in 2006. Her health condition became worse in 2014. Experts at the Memphis Zoo and in China tried many ways but couldn’t solve the problems. On April 27, Ya Ya returned to China after staying for 20 years in America. The panda was then quarantined(隔离) in Shanghai Zoo before moving to Beijing. On May 29, Ya Ya arrived at its home, the Beijing Zoo.The Beijing Zoo has prepared a special feeding place for Ya Ya as well as feeding plans, care and medical support, according to the National Forestry and Grassland Administration. As she is old, she needs to rest and adapt(适应) to the new environment. So she will not be visited for a short period of time. The zoo will tell the public about Ya Ya’s health condition through its official Weibo account, according to the administration.A lot of people pay much attention to Ya Ya. They hope she will get better soon. 16.Where was Ya Ya born?A.In the Beijing Zoo.B.In the Shanghai Zoo.C.In the Memphis Zoo.D.In the Tennessee Zoo.17.When did Ya Ya come back to China?A.In 2003.B.In 2006.C.In 2014.D.In 2023. 18.The Beijing Zoo has prepared something special for Ya Ya except ________. A.feeding plans B.a feeding placeC.a research and protection plan D.care and medical support19.People are not allowed to visit Ya Ya because ________.A.she is taken to the Memphis ZooB.she is quarantined in the Shanghai ZooC.her health condition becomes betterD.she needs to rest and adapt to the new environment20.Where can you most probably read the article?A.In a newspaper.B.In a movie poster.C.In a travel guide.D.In a sports magazine.There is a great need to search for clean and renewable(可再生的) energy to meet our needs. It seems that wind energy is a good choice. Do you know anything about wind energy?The first advantage of wind energy is that it truly is a renewable resource. No matter how much wind we use to produce electricity, we will never reduce the supply(供应) of wind. This is its greatest advantage compared with non-renewable resources like coal or oil. Second, wind energy is a clean source of energy, which means it produces environment-friendly electricity. What’s more, the large towers,which provide the base for the wind turbines(涡轮机), don’t take up lots of space. They can share land with farms.However, each coin has two sides. That is to say wind energy does have some disadvantages. Wind does not provide supply of energy without stopping. Even the windiest places on earth have periods of calm. If there isn’t a strong wind, wind turbines are not able to produce electricity. The large blades of wind turbines can be very dangerous for birds and bats. The turbines cause noise pollution. It can also be bad to people living around.Although wind energy has disadvantages, its advantages shouldn’t be forgotten. 21.People search for ________ to meet their needs according to the passage. A.electricity B.coal and oilC.non-renewable energy D.clean and renewable energy 22.How many advantages of wind energy are talked about in the passage?A.One B.Two.C.Three D.Four 23.What does the underlined word “They” refer to in Paragraph 2?A.The large towers.B.Wind turbinesC.Energy resources.D.Renewable resources24.What’s the main idea of Paragraph 3?A.Wind energy also has some disadvantagesB.Wind can't provide energy without stoppingC.The blades of wind turbines can be very dangerousD.The turbines cause noise pollution while working25.According to the passage, we know that ________.A.wind energy is a non-renewable resourceB.the greatest advantage of wind energy is renewableC.the windiest areas never have periods of clamD.wind turbines can't be dangerous for birds and bats三、短文选词填空阅读下面的短文,用方框中所给词的适当形式填空,使文意通顺,结构正确。

甘肃省兰州市2024 年初中英语中考最后一次考试试题(含答案)

甘肃省兰州市2024 年初中英语中考最后一次考试试题(含答案)

2024 年中考考前最后一卷(甘肃兰州卷)英语(考试时间:90 分钟试卷满分:90 分)注意事项:1. 全卷共90 分,考试时间90 分钟。

2. 考生必须将姓名、准考证号、考场号、座位号等个人信息填(涂)写在答题卡上。

3. 考生务必将答案直接填(涂)写在答题卡的相应位置上。

一、完形填空(共10 小题:每小题 1 分,满分10 分)阅读下面短文,从短文后各题所给的四个选项中选出能填入空白处的最佳答案。

Sarah is a lovely little girl. She used to 1 time getting prepared to do her tasks, instead of doing them at once as she should do.In the village, Mr. Thornton kept a store where he sold 2 of all kinds, including berries (莓子) when in season. One morning he said to Sarah, “Well, Sarah, I 3 some fine, ripe (成熟的) blackberries on Mr. Green’s farm today. He said that anybody was welcome to them. I will pay you 13 cents a kilogram for all you pick for me.”Sarah was excited about the thought of making some money to help her mom, 4 she quickly ran home to get a 5 to hold the berries. Then she thought she would like to know how much money she would get if she picked five kilograms. After finding outthat she would get 65 cents, she started to dream 6 , “Supposing I should pick a dozen kilograms, how much should I make then ”“Dear me,” she shouted in surprise, after calculating (计算) a while, “I should make a dollar and fifty-six cents!”She spent some 7 dreaming bigger, and then it was so near lunchtime that she had to stay at home until the afternoon.As soon as lunch was over, she took her basket and hurried to the farm. Several boys had been there 8 lunch, and all the ripe blackberries were 9 . She could not find half a kilogram to fill her basket. How10 she was! Then she thought of what her teacher often told her. “Do your task at once, then think about it. One doer is worth 100 dreamers.”1. A. have B. save C. waste D. take2. A. vegetables B. fruits C. drinks D. snacks3. A. bought B. sold C. noticed D. stole4. A. but B. so C. because D. or5. A. box B. bag C. basket D. bowl6. A. big B. small C. long D. short7. A. money B. time C. effort D. energy8. A. after B. at C. before D. for9. A. grown B. picked C. lost D. eaten10. A. happy B. thankful C. lucky D. regretful二、阅读理解(共15 小题:每小题 2 分,满分30 分)阅读下面三段材料,根据材料内容和要求,从题后所给的四个选项中选择一个最佳答案。

兰州中考试题语文及答案

兰州中考试题语文及答案

兰州中考试题语文及答案一、选择题(每题2分,共20分)1. 下列词语中,加点字的读音完全正确的一项是()A. 矜持(jīn)蹒跚(pán)踌躇(chú)B. 踯躅(zhí)缄默(jiān)恣意(zì)C. 桎梏(gù)缄默(jiān)踯躅(zhú)D. 踌躇(chú)桎梏(gù)缄默(jiān)答案:B2. 下列句子中,没有语病的一项是()A. 通过这次活动,使我们认识到了团结协作的重要性。

B. 他虽然学习成绩优异,但是品德高尚,深受同学们的喜爱。

C. 为了防止这类事故不再发生,我们必须采取有效措施。

D. 他不但学习成绩优秀,而且乐于助人,是我们学习的榜样。

答案:D3. 下列句子中,加点成语使用正确的一项是()A. 他做事总是不拘小节,这次也不例外,结果又犯了一个低级错误。

B. 面对困难,他总是迎难而上,真是一个知难而进的人。

C. 他虽然成绩优异,但总是不以为然,认为自己还有很大的提升空间。

D. 他对待工作总是敷衍了事,这种态度让人难以接受。

答案:B4. 下列句子中,标点符号使用正确的一项是()A. 他问我:“你明天有空吗?我们一起去看电影。

”B. 他问我,你明天有空吗?我们一起去看电影。

C. 他问我:“你明天有空吗?我们一起去看电影!”D. 他问我,你明天有空吗,我们一起去看电影?答案:A5. 下列句子中,修辞手法使用正确的一项是()A. 春天像一个小姑娘,轻轻地走来。

B. 他的声音像雷鸣一般,震耳欲聋。

C. 她的眼睛像星星一样,闪烁着光芒。

D. 他像一只受伤的小鸟,蜷缩在角落里。

答案:A6. 下列句子中,表达最准确的一项是()A. 他可能明天会来参加聚会。

B. 他明天可能不会来参加聚会。

C. 他明天一定会来参加聚会。

D. 他明天可能来参加聚会。

答案:D7. 下列句子中,表达最得体的一项是()A. 你今天穿的衣服真好看,是在哪里买的?B. 你的衣服真好看,是在哪里买的?C. 你今天穿的衣服真好看,是在哪里买的?我可以买一件吗?D. 你的衣服真好看,我可以买一件吗?答案:C8. 下列句子中,表达最恰当的一项是()A. 他虽然年轻,但已经取得了显著的成就。

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