江西都昌东湖中学2015-2016学年上九年级期中测试试题
2015-2016学年上期中测试试题一、选择题(本大题共10个小题，每小题3分，共30分)
1.一元二次方程x2－3x＋2＝0的两根为x
1，x
2
，则x
1
＋x
2
的值是( )
A．2 B．－2 C．3 D．－3 2．一元二次方程x2－4x＋5＝0的根的情况是( )
A．有两个不相等的实数根 B．有两个相等的实数根
C．只有一个实数根 D．没有实数根
3．如果2是方程x2－3x＋c＝0的一个根，那么c的值是( )
A．4 B．－4 C．2 D．－2 4．三角形两边的长是3和4，第三边的长是方程x2－12x＋35＝0的根，则该三角形的周长为( )
A．14 B．12
C．12或14 D．以上都不对
5．某校准备修建一个面积为180平方米的矩形活动场地，它的长比宽多11米，设场地的宽为x米，则可列方程为( )
A．x(x－11)＝180 B．2x＋2(x－11)＝180
C．x(x＋11)＝180 D．2x＋2(x＋11)＝180 6．一个袋子中装有3个红球和2个黄球，这些球的形状、大小、质地完全相同，在看不到球的条件下，随机从袋子里同时摸出2个球，其中2个球的颜色相同的概率是( )
A.3
4
B.
1
5
C.
2
5
D.
3
5
7．关于x的一元二次方程(m－2)x2＋2x＋1＝0有实数根，则m的取值范围是( )
A．m≤3 B．m＜3
C．m＜3且m≠2 D．m≤3且m≠2
8．如图，矩形ABCD的对角线AC、BD相交于点O，CE∥BD，DE∥AC.若AC＝4，则四边形CODE的周长是( )
A．4 B．6 C．8 D．10
9．如图，正△AEF 的边长与菱形ABCD 的边长相等，点E 、F 分别在BC 、CD 上，则∠B 的度数是( )
A ．70°
B ．75°
C ．80°
D ．95°
第8题图 第9题图 第10 题图
第12题图第 15题图
10．如图，E ，F ，G ，H 分别是BD ，BC ，AC ，AD 的中点，且AB ＝CD ，下列结论：
①EG ⊥FH ；②四边形EFGH 是矩形；③HF 平分∠EHG ；④EG ＝12
(BC －AD)；⑤四边形EFGH 是菱形，其中正确的个数是( )
A ．1个
B ．2个
C ．3个
D ．4个
二、填空题(本大题共5小题，每小题4分，共20分)
11．一元二次方程x 2＋x ＝0的解是________________．
12．如图，在矩形ABCD 中，对角线AC 、BD 相交于点O ，若∠AOB ＝60°，AC ＝10，则AB ＝________.
13．若x 1、x 2是方程2x 2－3x －4＝0的两个根，则x 1x 2＋x 1＋x 2的值为________．
14．某班要从甲、乙、丙、丁四位班干部(两男两女)中任意两位参加学校组织的志愿者服务活动，则恰好选中一男一女的概率是________．
15．如图，正方形ABCD 的边长为4，∠DAC 的平分线交DC 于点E ，若点P ，Q 分别是AD 和AE 上的动点，则DQ ＋PQ 的最小值是________．
三、解答题(本大题共7个小题，各题分值见题号后，共70分)
16．(8分)用适当的方法解方程：
(1)x 2－4x ＋3＝0; (2)(x －2)(3x －5)＝1.
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D . 10 5. （2分）已知关于x的一元二次方程M为ax2+bx+c＝0、N为cx2+bx+a＝0（a≠c），则下列结论：①如果5是方程M的一个根，那么是方程N的一个根；②如果方程M有两个不相等的实数根，那么方程N也有两个不相等的实数根；③如果方程M与方程N有一个相同的根，那么这个根必是x＝1．其中正确的结论是（） A . ①② B . ①③ C . ②③ D . ①②③ 6. （2分）将方程x2-6x+3=0左边配成完全平方式，得到的方程是（） A . （x-3）2=-3 B . （x-3）2=6 C . （x-3）2=3 D . （x-3）2=12 7. （2分）关于x的一元二次方程x2-mx-1=0的根的情况（） A . 有两个不相等的实数根 B . 有两个相等的实数根 C . 有一个实数根 D . 没有实数根 8. （2分）有一人患了流感，经过两轮穿然后共有49人患了流感，设每轮传染中平均一个人传染了x人，则x的值为（）
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外研版2020届九年级上学期英语8月开学考试试卷（I）卷 一、根据首字母及句意提示完成单词(10分) (共10题；共10分) 1. （1分）It's my d________ to become a singer when I grow up. 2. （1分）To perform in front of 40, 000 screaming fans was a great e________. 3. （1分）June 1st is Children's Day. Parents usually give their kids many g________on that day. 4. （1分）B________ is thicker than water. 5. （1分）It's so cold today that n ________ of us would like to play outside. 6. （1分）What about having a p________ in the park. 7. （1分）The man ________(用手拉) the dog out of the water just now. 8. （1分）Mum always c________ a nice present for rile for my birthday. 9. （1分）Every Chinese believes that Taiwan is our land and always b________ to China. 10. （1分）The weather was terrible. There were f________ people in the street. 二、用所给单词的适当形式填空(15分) (共15题；共15分) 11. （1分）用括号内所给动词的适当形式填空，必要时可加助动词或情态动词。 Once upon a time, a very old man named Yu Gong lived near two mountains. They were so high and big that it ________(take) a long time to walk to the other side. The old man told his family that they should all help him to move the mountains. But his wife said an old man probably even________(not move) a small tree and where they would put all the earth and stone from the mountains. Yu Gong said they could put it into the sea because it's big enough ________(hold) everything. So they all started digging the next day and moved some of the earth and stone to the sea. One day, a man saw Yu Gong and his children when they ________(work) on moving the mountains. He told Yu Gong that he could never do it because he was old and weak. As soon as the man finished ________(talk), Yu Gong said that his family could continue to move the mountains after he died because his family would live and grow, but the mountains could not get bigger. So Yu Gong and his family kept on ________(dig) day after day and year after year. Finally, a god was so moved by Yu Gong that he sent two gods to take the mountains away. This story reminds us that you can never know what's possible unless you try to make it ________(happen). 12. （1分）阅读下面的短文，按照句子结构的语法情况和上下义连贯的要求，在空白处填入一个适当的词或用括号中所给词的正确形式填空，每空不超过两词。 Look! This is a photo ________ my family. The boy on the right is ________ (I) brother. ________ (he) name is Zhang Tian and he is six years old. ________ is the girl next to him? She is my cousin Wu Xiaochen. She is ten years old. They ________ (be) in the same school ________ (this) are my parents. My mother is a doctor at a ________. My father works at a police station and he is a ________. Oh, what's this in front of Wu Xiaochen7 It's my cat. ________ (it) name is Taotao. Where is me? Oh, sorry! I am ________ in this photo!
九年级英语期末试卷
九年级上期英语期末测试题 （全卷满分：150分；考试时间：120分钟） 一、听力部分（共30分） （一）听句子，选出句子中所包含的信息（每小题1分，共5分） ( )1. A. peasants B. presents C. parents D. parent ( )2. A. past B. passed C. pass D. parts ( )3. A. interested B. favorite C. different D. inportant ( )4. A. look worried B. be worried C. feel worried D. worry about ( )5. A. June 16.,1986 B. July 8,1986 C. June 18,1986 D. July 16,1988 （二）听句子，选出该句的最佳答语（每小题1分，共5分） ( )6. A. Quite well. B. I’d love to. C. They’re busy. ( )7. A. No, thanks. B. I want more dumplings. C. I don’t like it at all. ( )8. A. Yes, I know. B. Sorry, I don’t know. C. The nearest post office is very big. ( )9. A. I’ve just drunk it. B. I don’t know. C. I’ve just eaten it. ( )10. A. Yes, please. B. Have a good time. C. That’s kind of you. （三）听对话和问题，选择最佳答案（每小题2分，共10分） ( )11. A. She has gone to her hometown. B. She is returning from her hometown. C. She is leaving for her hometown. ( )12. A. Yes, I can. B. No, I can’t C. Yes, I do. ( )13. A. Oliver. B. Tom C. Mike. ( )14. A. At 6:35. B. At 5:55 C. At 5:45. ( )15. A. Very good. B. Quite interesting. C. Not good. （四）听短文，选出最佳答案（每小题2分，共10分） 16. How old was Mike ? A. Over ten. B. Less than ten. C. Ten. D. About ten. 17. Did Mike like doing his homework ?( ) A. No, he didn’t like doing it. B. Yes, he did it himself. C. Yes, and he did it well. D. Yes, he enjoyed doing it. 18. Why was the teacher pleased and surprised ?( ) A. Mike made a lot of mistakes. B. Mike didn’t do his homework at all. C. Mike didn’t finish his homework. D. Mike did all his exercises right. 19. How did Mike do his homework this time? A. His father did it for him. B. His brother helped him do it. C. He did it by himselt. D. Hes mother helped him with it. 20. Do you think Mike’s father was good at maths ? A. Yes, he was. B. No, he wasn’t C. No, he was good at English. D. We have no idea. 二、笔试部分 （一）根据句意及首字母提示填空（每小题1.5分，共15分） 1. Can you p_____________ me with some books on science? 2. Could you tell me how to p_________ this word ? 3. Everyone in my class w_________ about the coming exam. 4. You can find p__________ telephones easily in our city now. 5.That year’s Olympics were s_________ because the games were coming back to the country where they started. 6. The policemen have caught the thief who matches Mrs Li’s d_____________ . 7. Hong Kong has lots of great e_____________. 8. I want to join the school v________ project. 9. It’s d_________ to swim alone in the river. 10. What’s wrong with the flowers ? Some of the l__________ are turning yellow. (二)用所给词的适当形式填空（每小题1.5分，共15分） 1. I’d like Uncle Li _____________ (mend) my bicycle. 2. Jim doesn’t know how ________(fix) up his TV. 3. A cup is used for ___________(drink) water. 4. By the time she got to the cinema, the movie _______________(begin). 5. ____________ (luck) , I passed the examination. 6. The TV play had a very happy _________(end). 7. Lin Tao would like to go (to) somewhere __________ (relax). 8. I’d like to stay at home, because I like _________(peace) vacations. 9. Mr Chen was surprised to see the fast __________(develop) in China after his long absence from the country. 10. Watch __________(care), and you will find the differences between the two pictures. （三）单项选择（每小题1分，共20分） 1. It is reported that a small plane from South Africa crashed（坠毁）northwest of Changsha _______ May 28,2004. A. on B. in C. to D. at 2.—Shall we call for a taxi? —OK. Let me _______ the phone number in Yellow Pages. A. look at B. look for C. look up D. look after. 3. With the development of the society, parents _______ more and more money on their children’s education. A. take B. cost C. pay D. spend 4. —How many people will come to Beijing for the Olympic Games in 2008? —It’s hard to say. _______ people, I think. A. Million of B. Millions of C. Two millions of D. Two million of 5. —Thanks for giving me ______ I wanted. —You’re welcome. A. the information B. an information C. the informations D. information 6. There is not many differences between the two. I really don’t know ___________. A. what should I choose B. which I should choose C. which should I choose D. what I should choose 7. The television ________. It doesn’t work now.
九年级数学《圆》单元测试题
九年级数学《圆》单元测试题 一、精心选一选，相信自己的判断！ (本大题共 10 小题，每小题 4 分，共 40 分) 1.如图，把自行车的两个车轮看成同一平面内的两个圆，则它们的位置关系是（） A. 外离 B. 外切 C. 相交 D. 内切 2.如图，在⊙ O中，∠ ABC=50°，则∠ AOC 等于（） A．50°B．80°C．90°D．100° A BO C 第 1题图第2题图第3题图 3.如图， AB 是⊙ O 的直径，∠ ABC=30°，则∠ BAC = （） A．90°B．60°C． 45°D．30°（） 4.已知⊙ O 的直径为 12cm，圆心到直线L 的距离为 6cm，则直线 L 与⊙ O 的公共点的 个数为（） A ．2B． 1C．0D．不确定 5.已知⊙ O1 与⊙ O2 的半径分别为 3cm 和 7cm，两圆的圆心距 O1O2 =10cm，则两圆的 位置关系是（） A ．外切B．内切C．相交D．相离 6.已知在⊙ O 中，弦 AB 的长为 8 厘米，圆心 O 到 AB 的距离为 3 厘米，则⊙ O 的半径是（） A．3 厘米B．4 厘米C．5 厘米D．8 厘米 7.下列命题错误的是（） A ．经过三个点一定可以作圆B．三角形的外心到三角形各顶点的距 离相等 C．同圆或等圆中，相等的圆心角所对的弧相等D．经过切点且垂直于切线的直线必经过圆心 8.在平面直角坐标系中，以点（2， 3）为圆心， 2 为半径的圆必定（） A ．与 x 轴相离、与 y 轴相切B．与 x 轴、 y 轴都相离 C．与 x 轴相切、与 y 轴相离D．与 x 轴、 y 轴都相切 9.同圆的内接正方形和外切正方形的周长之比为（） A． 2 ∶1B．2∶1C．1∶2D．1∶2 10.在 Rt△ ABC 中，∠ C=90°，AC=12， BC=5，将△ ABC 绕边 AC 所在直线旋转一周 得到圆锥，则该圆锥的侧面积是（） A ．25πB． 65πC．90πD．130π二、细心填一填，试自己的身手！（本大题共 8 小题，每小题 5 分，共 40 分） 11.各边相等的圆内接多边形_____正多边形；各角相等的圆内接多边形_____正多边形 . （填“是”或“不是” ） 12.△ABC 的内切圆半径为r，△ABC 的周长为 l，则△ ABC 的面积为 _______________ . 13.已知在⊙ O 中，半径 r=13，弦 AB ∥CD，且 AB=24，CD=10，则 AB 与 CD 的距离 为__________. 14．如图，量角器外沿上有 A 、B 两点，它们的读数分别是70°、40°，则∠ 1 的度数为. ⊙O BO 与 ⊙O 交于点 C ， B26°OCA 度．15. 如图，与AB相切于点A，，则 ° °O O C O A O B 第 14题图 15 第题O 16.如图，在边长为 3cm 的正方形中，⊙O P 与⊙ Q 相外切，且⊙ P 分别与 DA 、DC 边相 图 切，⊙ Q 分别与 BA 、BC 边相切，则圆心距PQ 为______________． D C P P O A B Q A B 第17题图 第16 题图 17.如图，⊙ O 的半径为 3cm，B 为⊙ O 外一点， OB 交⊙ O 于点 A ，AB=OA ，动点 P 从点 A 出发，以πcm/s的速度在⊙ O 上按逆时针方向运动一周回到点 A 立即停止．当点P 运动的时间为 _________s时， BP 与⊙ O 相切． 18.如图，等腰梯形ABCD 中， AD ∥BC，以 A 为圆心， AD 为半径的圆与 BC 切于点 ⌒A D M ，与 AB 交于点 E，若 AD ＝2，BC＝6，则DE的长为（）E A ． 3 B． 3 C． 3 D． 3 BM C 248 三、用心做一做，显显自己的能力！（本大题共 7 小题，满分 66 分） 19.（本题满分10分）如图，圆柱形水管内原有积水的水平面宽CD= 20cm，水深GF= 2cm.若水面上升 2cm（EG= 2cm），则此时水面宽 AB 为多少？ O E B A G D C F
2019-2020年九年级下学期数学入学考试试卷
2019-2020年九年级下学期数学入学考试试卷 数学试卷 (说明:本试卷考试时间为90分钟,满分为100分) 一．选择题（每小题3分，共36分，每题只有一个正确答案，请把正确答案填写在答题卷．．． 上的表格里） 1．21 - 的值是 A ．2 1 - B ． 2 1 C ．2- D ．2 2．近几年某省教育事业加快发展，据 2016 年末统计的数据显示，仅普通初中在校生就约 有334 万人，334万人用科学记数法表示为 A. 3.34×106 人 B. 3.34×105 人 C. 3.34×104 人 D. 3.34×107 人 3．下面的图形中，既是轴对称图形又是中心对称图形的是 A ． B ． ． 4．如图,它需再添一个面,折叠后才能围成一个正方体,下图中的黑色小正方形分别由四位同学补画,其中正确的是 5．如图，AB ∥CD ，EG ⊥AB ，垂足为G ．若∠1＝50°，则∠E= A ．60° B ．50° C ．45° D ．40° 第5题图 6．如图，身高为1.6m 的某学生想测量一棵大树的高度，她沿着树影BA 由B 到A 走去，当走到C 点时，她的影子顶端正好与树的影子顶端重合， 测得BC=3.2m , CA=0.8m, 则树的高度为 A 、10m B 、8m C 、6.4m D 、4.8m （第4题图） A B C D 第6题图
7．下列运算中，结果正确的是 A. 444a a a += B. 236(2)6a a -=- C. 824a a a ÷= D. 523a a a =? 8．下列命题，真命题是 A. 两条直线被第三条直线所截，同位角相等 B. 对角线相等的四边形是矩形 C. 两组对角分别相等的四边形是平行四边形 D. 在同一个圆中，相等的弦所对的弧相等9.若A （1，y 1）、B （2,y 2）、C （-3,y 3）为双曲线x k y 1 -=上三点，且y 1> y 2>0> y 3， 则k 的范围为 A 、k>0 B 、k>1 C 、k<1 D 、k ≥1 10．已知△ABC 和△A′B′C′是位似图形．△A′B′C′的面积为6cm 2 ，△A′B′C′的周 长是△ABC 的周长一半．则△ABC 的面积等于 A ．24cm 2 B ．12cm 2 C ．6cm 2 D ．3cm 2 11．如图，点P 在双曲线y=上，以P 为圆心的⊙P 与两坐标轴都相切，E 为y 轴负半轴上的一点，PF ⊥PE 交x 轴于点F ，则OF ﹣OE 的值是 A. 6 B.5 C. 4 D. 25 12. 定义符号min{a ，b}的含义为：当a≥b 时min{a ，b}=b ；当a ＜b 时min{a ，b}=a ． 如：min{1，﹣3}=﹣3，min{﹣4，﹣2}=﹣4．则min{﹣x 2+1，﹣x}的最大值是 A. B. C. 1 D. 0 二、填空题（本题共4小题，每小题3分，共12分，请把正确答案填写在答题卷．．．上的表格里） 13．因式分解：3x 2-3= ▲ ； 14．不等式组? ??>-≥-03042x x 的解集是_____▲____． 15． 某中学篮球队12名队员的年龄情况如下：