2014-2015学年59中初三年级期中考试单选及二卷【青岛开发区书香学苑】
2015青岛市开发区中考二模英语试题
2014-2015学年度第二学期教学质量阶段性检测九年级英语试题(考试时间:120分钟)友情提示:Hi, 亲爱的同学,相信自己,你是最棒的,加油!1. 本试卷分第Ⅰ卷和第Ⅱ卷两部分,共10页,答卷前,考生务必将姓名、座号、准考证号填写在答题卡规定的位置上。
2. 请将第一卷1-55小题的答案用2B铅笔涂在答题卡相应位置上,如需改动,用橡皮擦干净后,再选涂其它答案标号,答案不能答在试题卷上。
请将听力第IV大题A部分的答案写在答题卡指定的相应位置上。
3. 请将第II卷试题答案用签字笔写在答题卡指定区域内的相应位置上,不能写在试卷上,如需改动,先划掉原来的答案,然后再写上新的答案,不准使用涂改液、胶带纸、修正带。
不按以上要求作答的答案无效,考试结束后,将答题卡上交。
第I卷第一部分听力测试I.听句子,选择最佳答语。
每个句子读一遍。
你将有10秒钟的时间完成有关小题和阅读下一小题。
1. A. Every day. B. Three years ago. C. About three years.2. A. I don’t like English. B. They are both difficult. C. I like both of them.3. A. It leaves at seven.B. The man over there. C. This way, please.4. A. It wasn’t difficult. B. Never mind. C. It’s time for class.5. A. Yes, they did. B. They went to the park. C. No, they didn’t.II.听对话和问题,选择正确答案。
对话和问题读两遍。
你将有10秒钟的时间完成有关小题和阅读下一小题。
6. A. At 9:30. B. At 9:00. C. At 8:30.7. A. By bus. B. By bike. C. By car.8. A. She likes animals very much. B. She doesn’t like animals at all.C. She doesn’t keep animals at home.9. A. 765 dollars. B. 865 dollars. C. 965 dollars.10. A. She is sleepy. B. She is ill. C. She is happy.III. 听对话,回答问题。
2014—2015学年度上学期英语期中考试卷
2014-2015学年度上学期英语期中考试卷八年级英语一、单项选择题(每题1分,共20分)( ) 1. He was so tired that he could keep his eyes open.A. stillB. almostC. hardD. hardly( ) 2. We couldn’t see the road clearly the heavy snow.A. becauseB. because ofC. soD. though( ) 3. — Tom is a boy and he is quite healthy.A. 15 years oldB. 15-years-oldC. 15-year-oldD. 15 year old ( ) 4. —do you go to school by bike? —Only four times a week.A. How manyB. How muchC. How longD. How often ( ) 5. Lisa is than her sister.A. more smarterB. very smarterC. more smartD. much smarter ( ) 6. She is ready his classmates with their English.A. helpB. helpsC. to helpD. helped( ) 7.He is different his brother, but he is similar his father.A. from, fromB. from, toC. to, toD. to, from( ) 8.He often jokes and makes us .A. tells, laughB. talks, laughC. talks, to laughD. tells, to laugh ( ) 9. ______he isn’t tall,_______ he is strong.A. Though; butB. But; soC. Though; soD. Though; 不填( ) 10. You look _______ . Do you hear the _________ news?A. excite; excitedB. excited; exciteC. exciting; excitedD. excited; exciting ( ) 11.Thanks me!A. for tellB. to tellC. for tellingD. to telling( ) 12. It’s important ______ us ________ some good books.A. for; readB. to; to readC. for; to readD. to; reading ( ) 13. Parents usually a role in their kids.A. make, helpingB. play, helpingC. plays, helpD. makes, help ( ) 14. Students should study hard to make their dreams .A. come outB. come trueC. come upD. come on ( ) 15. Which country is ,China, Brazil or Canada?A. the largestB. largerC. largestD. the larger ( ) 16. I can’t stand the noisy music, let him it.A. hearing, stopB. to hear, stopC. hearing, to stopD. to hear, to stop ( ) 17. Mickey Mouse was the first cartoon sound.A. andB. ofC. withD. in( ) 18. —Would you mind Mickey Mouse? —No, I enjoy it.A. watching, to watchB. to watch, to watchC. watching, watchingD. to watch, watching( ) 19. There is junk food here, and it is terrible.A. too much, too muchB. too much, much tooC. much too, much tooD. much too, much too( ) 20. Everyone knows China is getting _______.A. stronger and strongerB. more strong and strongC. strong and strongD. strongest and strongest二、完形填空(每题1分,共10分)Last August ,our class 21 something very special on our school trip .We 22 to Mount Tai .We 23 our trip at 12:00 at night .Everyone in our class 24 a bag with some food and water .After three 25 ,someone 26 at the map and found out we weren’t anywhere near the top. My legs 27 so tired that I wanted 28 .My classmates told me 29 going ,so I went on.Twenty 30 later ,the sun started to come up .It was so beautiful that we forgot about the last five hours !( ) 21. A. do B. did C. does D. has( ) 22.A. go B. went C. goes D. play( ) 23.A. started B. to start C. starting D. enough( ) 24.A. took B. cold C. wrong D. taking( ) 25.A. times B. hour’s C. hours D. apples( ) 26.A. find B. looks C. looking D. looked( ) 27.A. be B. was C. were D. are( ) 28.A. to stop B. stop C. come D. came( ) 29.A. keep B. to keep C. kept D. make( ) 30.A. minute B. minutes C. time D. times三、阅读理解(每题2分,共30分)ABruno was a boy of eight. His father worked in a cinema and his mother worked in a shop. He lived not far from his school. He always walked there and walked home. On his way to school, he had to pass a playground. It was very wet after it rained. One day, when he got home, his clothes were all wet. His mother became angry(生气的)and said, “Don’t play in the water on your way home from school!”On the next day Bruno came home with wet and dirty(脏的)clothes. His mother became even angrier. “I’ll tell your father if you come back wet again,” said his mother. “He’ll punish(惩罚)You, you know.”The third day the little boy was dry when he came home.“You’re a good boy today”, his mother said happily. “You didn’t play in the water.”“No,” the boy said unhappily. “There were too many older boys in the water when I got there this afternoon. There wasn’t any room(空地方)for me at all!”()31.Bruno went to school every day.A. by bikeB. by busC. by carD. on foot()32.The playground was between(在……之间) 。
2014-2015年山东省青岛市经济开发区六中九年级上学期数学期中试卷带答案
2014-2015学年山东省青岛市经济开发区六中九年级(上)期中数学试卷一、选择题(本题满分24分,共有8道小题,每小题3分)1.(3分)对于四条线段a、b、c、d,如果ab=cd,那么()A.=B.=C.=D.=2.(3分)根据下列表格对应值:判断关于x的方程ax2+bx+c=0(a≠0)的一个解x的范围是()A.1.1<x<1.2 B.1.2<x<1.3 C.1.3<x<1.4 D.无法判定3.(3分)小明从一定高度随机掷一枚质地均匀的硬币,他已经掷了两次硬币,结果都是“正面朝上”,那么,从概率的角度分析,小明第三次掷硬币时,()A.一定会正面朝上B.正面朝上的可能性大于反面朝上C.反面朝上的可能性大于正面朝上D.正、反面朝上的可能性一样大4.(3分)在平行四边形、菱形、矩形、正方形这四种图形中,既是轴对称图形,也是中心对称图形的有()A.1种 B.2种 C.3种 D.4种5.(3分)用配方法解方程2x2+6=7x时,配方后所得的方程为()A.B.C.D.6.(3分)主持人站在舞台的黄金分割点处最自然得体,如果舞台AB长为20米,一个主持人现站在舞台AB的黄金分割点点C处,则下列结论一定正确的是()①AB:AC=AC:BC;②AC≈6.18米;③米;④米或米.A.①②③④B.①②③C.①③D.④7.(3分)小亮和小刚按如下规则做游戏:每人从1,2,…,12中任意选择一个数,然后两人各掷一次均匀的骰子,谁事先选择的数等于两人掷得的点数之和谁就获胜;如果两人选择的数都不等于掷得的点数之和,就再做一次上述游戏,直至决出胜负.从概率的角度分析,游戏者事先选择()获胜的可能性较大.A.5 B.6 C.7 D.88.(3分)如图,在矩形纸片ABCD中,AB=6,BC=8.将矩形纸片沿GH折叠,使点B与D重合,则下列语句正确的是()①四边形BGDH是菱形;②AG=1.75;③GH=7.5;④四边形BGDH的面积是37.5.A.只有①②B.只有②③C.①②③D.①②③④二、填空题(本题满分18分,共有6道小题,每小题3分)9.(3分)在一个有10万人的小镇上,随机调查了2 000人,其中有250人看中央电视台的早间新闻,在该镇随便问一人,他看早间新闻的概率大约是.10.(3分)如果,那么=.11.(3分)某种型号的电视机经过两次降价,价格从原来每台2250元降为每台1440元,设平均每次下降的百分率为x,列出方程为.12.(3分)已知关于x的方程2x2﹣4x+m=0的一个根是1﹣,则它的另一个根是.13.(3分)在菱形ABCD中,对角线AC、BD相交于点O,BD=6,∠ABC=2∠BCD,则对角线AC=,菱形ABCD面积=.14.(3分)如图,在平行四边形ABCD中,点F是AD边上一点,连接BF与对角线AC相交于点E.①时,=.②当时,=,=.三、解答题(本题共有10道小题,满分78分)15.(6分)用圆规、直尺作图,不写作法,但要保留作图痕迹.求作:一个菱形ABCD,使它的对角线AC的长等于已知线段a.16.(12分)解方程:①16y2+8y﹣3=0②x(x+2)=2+x.17.(6分)在方格纸上任意连接不在同一直线上的三个格点,便可画出一个三角形.请用这种方式在如下的方格纸上画出两个大小不等的三角形,要求这两个三角形都与格点三角形△ABC相似,且相似比不为1.18.(6分)如图,在Rt△ABC中,∠ACB=90°,D是AB的中点,AE∥CD,CE∥AB,判断四边形ADCE的形状,并证明你的结论.19.(8分)小颖为学校联欢会设计了一个“配紫色”游戏:下面是两个可以自由转动的转盘,每个转盘被分成面积相等的几个扇形,游戏者同时转动两个转盘,如果两个转盘分别转出了红色和蓝色,那么他就赢了,因为红色和蓝色在一起配成了紫色.(1)利用画树状图或列表的方法表示游戏所有可能出现的结果;(2)求游戏者获胜的概率.20.(8分)已知:如图,在△ABC中,AB=AC,AD是BC边的中线,AN为△ABC 的外角∠CAM的平分线,CE⊥AN于点E,线段DE交AC于点F.(1)求证:四边形ADCE为矩形;(2)线段DF与AB有怎样的关系?证明你的结论.21.(10分)某商场将进货价为30元的台灯以40元售出,平均每月能售出600个.调查表明:售价在40﹣60元范围内,这种台灯的售价每上涨1元,其销售量将减少10个,为了实现平均每月10000元的销售利润,这种台灯的售价应定为多少?22.(10分)将两个不全等的直角三角板,Rt△AOB与Rt△DOE叠放在一起,使得两直角∠AOB与∠DOE的顶点重合,已知∠OAB=∠ODE=30°,下图是直角三角板△DOE绕顶点O顺时针旋转三个瞬间的平面图形.(1)在旋转过程中,AD:BE的值是否是定值?请利用图1求出这个定值或说明不是定值的理由;(2)在旋转过程中,AD与BE有什么位置关系?请分别利用图2、图3说明理由.23.(12分)如图,在矩形ABCD中,AB=12cm,BC=8cm,点E、F、G分别从点A、B、C三点同时出发,沿矩形的边按逆时针方向移动,点E,G的速度均为2cm/s,点F的速度为4cm/s,当点F追上点G(即点F与点G重合)时,三个点随之停止移动.设移动开始后第t秒时,△EFG的面积为S(cm2).(1)是否存在某一时刻t,使得S的值是矩形ABCD面积的?存在,请求出相应的t值;不存在,请说明理由;(2)若点F在矩形的边BC上移动,当t为何值时,以点E、B、F为顶点的三角形与以F、C、G为顶点的三角形相似?请说明理由(3)在点E,F,G出发后,当t=时,△EFG是直角三角形.(填空即可,不必说明理由)2014-2015学年山东省青岛市经济开发区六中九年级(上)期中数学试卷参考答案与试题解析一、选择题(本题满分24分,共有8道小题,每小题3分)1.(3分)对于四条线段a、b、c、d,如果ab=cd,那么()A.=B.=C.=D.=【解答】解:∵ab=cd,∴=,=.故选:B.2.(3分)根据下列表格对应值:判断关于x的方程ax2+bx+c=0(a≠0)的一个解x的范围是()A.1.1<x<1.2 B.1.2<x<1.3 C.1.3<x<1.4 D.无法判定【解答】解:由表可以看出,当x取1.1与1.2之间的某个数时,y=0,即这个数是ax2+bx+c=0的一个根.ax2+bx+c=0的一个解x的取值范围为1.1<x<1.2.故选:A.3.(3分)小明从一定高度随机掷一枚质地均匀的硬币,他已经掷了两次硬币,结果都是“正面朝上”,那么,从概率的角度分析,小明第三次掷硬币时,()A.一定会正面朝上B.正面朝上的可能性大于反面朝上C.反面朝上的可能性大于正面朝上D.正、反面朝上的可能性一样大【解答】解:第三次抛掷硬币不受前两次的影响,仍为正、反面朝上的可能性一样大.故选:D.4.(3分)在平行四边形、菱形、矩形、正方形这四种图形中,既是轴对称图形,也是中心对称图形的有()A.1种 B.2种 C.3种 D.4种【解答】解:菱形、矩形、正方形既是轴对称图形,也是中心对称图形,共3个.故选:C.5.(3分)用配方法解方程2x2+6=7x时,配方后所得的方程为()A.B.C.D.【解答】解:移项,得:2x2﹣7x=﹣6,二次项系数化成1得:x2﹣x=﹣3,配方,x2﹣x+=﹣3+,即(x﹣)2=,故选:A.6.(3分)主持人站在舞台的黄金分割点处最自然得体,如果舞台AB长为20米,一个主持人现站在舞台AB的黄金分割点点C处,则下列结论一定正确的是()①AB:AC=AC:BC;②AC≈6.18米;③米;④米或米.A.①②③④B.①②③C.①③D.④【解答】解:AB的黄金分割点为点C处,若AC>BC,则AB:AC=AC:BC,所以①不一定正确;AC≈0.618AB≈12.36或AC≈20﹣12.36=7.64,所以②错误;若AC为较长线段时,AC=AB=10(﹣1),BC=10(3﹣);若BC为较长线段时,BC=AB=10(﹣1),AC=10(3﹣),所以③不一定正确,④正确.故选:D.7.(3分)小亮和小刚按如下规则做游戏:每人从1,2,…,12中任意选择一个数,然后两人各掷一次均匀的骰子,谁事先选择的数等于两人掷得的点数之和谁就获胜;如果两人选择的数都不等于掷得的点数之和,就再做一次上述游戏,直至决出胜负.从概率的角度分析,游戏者事先选择()获胜的可能性较大.A.5 B.6 C.7 D.8【解答】解:两人抛掷骰子各一次,共有6×6=36种等可能的结果,点数之和为7的有6种,最多,故选择7获胜的可能性大,故选:C.8.(3分)如图,在矩形纸片ABCD中,AB=6,BC=8.将矩形纸片沿GH折叠,使点B与D重合,则下列语句正确的是()①四边形BGDH是菱形;②AG=1.75;③GH=7.5;④四边形BGDH的面积是37.5.A.只有①②B.只有②③C.①②③D.①②③④【解答】解:连接BD交GH于点O;由题意得:GB=GD,BO=DO,BD⊥GH;∵四边形ABCD为矩形,∴∠C=90°,DC=AB=6,DG∥BC;由勾股定理得:BD2=BC2+DC2=64+36=100,∴BD=10;∵DG∥BC,∴∠DGO=∠BHO;在△DGO与△BHO中,,∴△DGO≌△BHO(AAS),∴DG=BH;又∵DG∥BC,∴四边形BHDG是平行四边形,而GB=GD,∴四边形BGDH为菱形;设AG=x,则BG=DG=8﹣x,在直角△ABG中,由勾股定理得:(8﹣x)2=x2+62解得:x=1.75,即AG=1.75;BG=8﹣1.75=6.25,∴菱形BGDH的面积为6.25×6=37.5;又∵菱形BGDH的面积=,∴GH=7.5.故选:D.二、填空题(本题满分18分,共有6道小题,每小题3分)9.(3分)在一个有10万人的小镇上,随机调查了2 000人,其中有250人看中央电视台的早间新闻,在该镇随便问一人,他看早间新闻的概率大约是.【解答】解:由题意知:2000人中有250人看中央电视台的早间新闻,∴在该镇随便问一人,他看早间新闻的概率大约是=.故答案为:.10.(3分)如果,那么=.【解答】解:∵==,∴==,∴=.故答案为:.11.(3分)某种型号的电视机经过两次降价,价格从原来每台2250元降为每台1440元,设平均每次下降的百分率为x,列出方程为2250(1﹣x)2=1440.【解答】解:设这种电视机平均每次降价的百分率为x,根据题意列方程得,2250(1﹣x)2=1440.故答案为:2250(1﹣x)2=1440.12.(3分)已知关于x的方程2x2﹣4x+m=0的一个根是1﹣,则它的另一个根是1+.【解答】解:设2x22x+m=0的另一个根为x1,则1﹣+x1=2,解得:x1=1+;故答案为:1+.13.(3分)在菱形ABCD中,对角线AC、BD相交于点O,BD=6,∠ABC=2∠BCD,则对角线AC=6,菱形ABCD面积=18.【解答】解:∵在菱形ABCD中,∠ABC=2∠BCD,∴∠BCD=60°,∴△BCD是等边三角形,∴CO=×6=3,∴AC=2CO=6,菱形ABCD面积=×6×6=18.故答案为:6;18.14.(3分)如图,在平行四边形ABCD中,点F是AD边上一点,连接BF与对角线AC相交于点E.①时,=.②当时,=,=.【解答】解:∵四边形ABCD是平行四边形,∴AD∥BC,∴△ABF与▱ABCD同高.①∵,∴==.故答案是:.②如图,过点作GH⊥AD,交AD于点G,交BC于点H,则EH⊥BC.∵,∴==•=.∵四边形ABCD是平行四边形,∴AD∥BC,AD=BC.∴△AEF∽△CEB,∴===,∴=,==••=.故答案是:;.三、解答题(本题共有10道小题,满分78分)15.(6分)用圆规、直尺作图,不写作法,但要保留作图痕迹.求作:一个菱形ABCD,使它的对角线AC的长等于已知线段a.【解答】解:已知:线段a和线段b;求作:菱形ABCD,使AC=b,BD=a;作法:1、作线段AC=b,2、作线段AC的垂直平分线MN,交AC于0,3、以O为圆心,a长为半径作弧,交MN于B、D两点,4、连接AB、BC、CD、AD,结论:如图菱形ABCD即为求作的图形.16.(12分)解方程:①16y2+8y﹣3=0②x(x+2)=2+x.【解答】解:①(4y﹣1)(4y+3)=04y﹣1=0或4y+3=0,所y1=,y2=﹣;②x(x+2)﹣(x+2)=0,(x+2)(x﹣1)=0,x+2=0或x﹣1=0,所以x1=﹣2,x2=1.17.(6分)在方格纸上任意连接不在同一直线上的三个格点,便可画出一个三角形.请用这种方式在如下的方格纸上画出两个大小不等的三角形,要求这两个三角形都与格点三角形△ABC相似,且相似比不为1.【解答】解:如图所示:△A′B′C′与△ABC的相似比为::1,△A″B″C″与△ABC的相似比为:2:1.18.(6分)如图,在Rt△ABC中,∠ACB=90°,D是AB的中点,AE∥CD,CE∥AB,判断四边形ADCE的形状,并证明你的结论.【解答】解:四边形ADCE是菱形.理由如下:∵AE∥CD,CE∥AB,∴四边形ADCE是平行四边形.又∵在Rt△ABC中,∠ACB=90°,D是AB的中点,∴CD=AD,∴四边形ADCE是菱形.19.(8分)小颖为学校联欢会设计了一个“配紫色”游戏:下面是两个可以自由转动的转盘,每个转盘被分成面积相等的几个扇形,游戏者同时转动两个转盘,如果两个转盘分别转出了红色和蓝色,那么他就赢了,因为红色和蓝色在一起配成了紫色.(1)利用画树状图或列表的方法表示游戏所有可能出现的结果;(2)求游戏者获胜的概率.【解答】解:(1)列表得:(2)由(1)可知所以P(配成紫色)=.20.(8分)已知:如图,在△ABC中,AB=AC,AD是BC边的中线,AN为△ABC 的外角∠CAM的平分线,CE⊥AN于点E,线段DE交AC于点F.(1)求证:四边形ADCE为矩形;(2)线段DF与AB有怎样的关系?证明你的结论.【解答】(1)证明:∵在△ABC中,AB=AC,AD是BC边的中线,∴AD⊥BC,∠BAD=∠CAD,∴∠ADC=90°,∵AN为△ABC的外角∠CAM的平分线,∴∠MAN=∠CAN,∴∠DAE=90°,∵CE⊥AN,∴∠AEC=90°,∴四边形ADCE为矩形;(2)DF∥AB,DF=AB.理由:∵四边形ADCE为矩形,∴AF=CF,∵BD=CD,∴DF是△ABC的中位线,∴DF∥AB,DF=AB.21.(10分)某商场将进货价为30元的台灯以40元售出,平均每月能售出600个.调查表明:售价在40﹣60元范围内,这种台灯的售价每上涨1元,其销售量将减少10个,为了实现平均每月10000元的销售利润,这种台灯的售价应定为多少?【解答】解:设这种台灯上涨了x元.(40+x)(600﹣10x)﹣30(600﹣10x)=10000x2﹣50x+400=0x=40(舍去)或x=1040+10=50(元)答:这种台灯的售价应定为50元.22.(10分)将两个不全等的直角三角板,Rt△AOB与Rt△DOE叠放在一起,使得两直角∠AOB与∠DOE的顶点重合,已知∠OAB=∠ODE=30°,下图是直角三角板△DOE绕顶点O顺时针旋转三个瞬间的平面图形.(1)在旋转过程中,AD:BE的值是否是定值?请利用图1求出这个定值或说明不是定值的理由;(2)在旋转过程中,AD与BE有什么位置关系?请分别利用图2、图3说明理由.【解答】解:(1)AD:BE的值是定值.如图1,∵∠AOB=∠DOE=90°,∴∠AOB﹣∠BOD=∠DOE﹣∠BOD,即∠AOD=∠BOE,∵∠OAB=∠ODE=30°,∴=,=,∴=,∴△AOD∽△BOE,∴==;(2)AD⊥BE.理由如下:如图2,延长EB交AD于F,∵=,而∠AOD=∠BOE=90°,∴△AOD∽△BOE,∴∠ADO=∠BEO,∵∠BEO+∠OBE=90°,∠OBE=∠DBF,∴∠DBF+∠FDB=90°,∴∠DFB=90°,∴BE⊥AD;如图3,AD与BE相交于P,∵∠AOB=∠DOE=90°,∴∠AOB+∠BOD=∠DOE+∠BOD,即∠AOD=∠BOE,∵==,∴△AOD∽△BOE,∴∠1=∠2,∵∠2+∠3=90°,∠3=∠4,∴∠1+∠4=90°,∴∠DPE=90°,∴AD⊥BE.23.(12分)如图,在矩形ABCD中,AB=12cm,BC=8cm,点E、F、G分别从点A、B、C三点同时出发,沿矩形的边按逆时针方向移动,点E,G的速度均为2cm/s,点F的速度为4cm/s,当点F追上点G(即点F与点G重合)时,三个点随之停止移动.设移动开始后第t秒时,△EFG的面积为S(cm2).(1)是否存在某一时刻t,使得S的值是矩形ABCD面积的?存在,请求出相应的t值;不存在,请说明理由;(2)若点F在矩形的边BC上移动,当t为何值时,以点E、B、F为顶点的三角形与以F、C、G为顶点的三角形相似?请说明理由(3)在点E,F,G出发后,当t=或或t=或t=3时,△EFG是直角三角形.(填空即可,不必说明理由)【解答】解:(1)由题意得,AE=2t,BE=12﹣2t,BF=4t,FC=8﹣4t,CG=2t,DG=12﹣2t,12×8﹣×(12﹣2t)×4t﹣×(8﹣4t)×2t﹣×12×8=12×8×,整理得,t2﹣4t+4=0,解得,t1=t2=2,答:2秒后,S的值是矩形ABCD面积的;(2)当△EBF∽△FCG时,=,即=,解得,t=,当△EBF∽△GCF时,=,即=,解得,t=,∴当t=或时,以点E、B、F为顶点的三角形与以F、C、G为顶点的三角形相似;(3)作EH∥AD交DC于H,则DH=2t,HG=12﹣4t,由勾股定理得,EG2=64+(12﹣4t)2=16t2﹣96t+208,EF2=(12﹣2t)2+(4t)2=20t2﹣48t+144,GF2=(8﹣4t)2+(2t)2=20t2﹣64t+64,当∠EFG=90°时,20t2﹣48t+144+20t2﹣64t+64=16t2﹣96t+208,解得t1=0(舍去),t2=,当∠EGF=90°时,20t2﹣48t+144=20t2﹣64t+64+16t2﹣96t+208,解得t1=,t2=(舍去).当点F在CD边上时,∠EFG=90°时,BE=CF,即12﹣2t=4t﹣8,解得,t=,∠EGF=90°时,BE=CF,即2t=12﹣2t,解得,t=3,∴当t=或或t=或t=3时,△EFG是直角三角形,故答案为:或或t=或t=3.赠送初中数学几何模型【模型二】半角型:图形特征:45°4321DA1FDAB正方形ABCD 中,∠EAF =45° ∠1=12∠BAD 推导说明:1.1在正方形ABCD 中,点E 、F 分别在BC 、CD 上,且∠FAE =45°,求证:EF =BE +DFE-a1.2在正方形ABCD中,点E、F分别在BC、CD上,且EF=BE+DF,求证:∠FAE=45°E-aa B E挖掘图形特征:a+bx-aa 45°DBa+b-a45°A运用举例:1.正方形ABCD的边长为3,E、F分别是AB、BC边上的点,且∠EDF=45°.将△DAE绕点D逆时针旋转90°,得到△DCM.(1)求证:EF=FM(2)当AE=1时,求EF的长.E2.如图,△ABC是边长为3的等边三角形,△BDC是等腰三角形,且∠BDC=120°.以D为顶点作一个60°角,使其两边分别交AB于点M,交AC于点N,连接MN,求△AMN的周长.ND CABM3.如图,梯形ABCD中,AD∥BC,∠C=90°,BC=CD=2AD=4,E为线段CD上一点,∠ABE=45°.(1)求线段AB的长;(2)动点P从B出发,沿射线..BE运动,速度为1单位/秒,设运动时间为t,则t为何值时,△ABP为等腰三角形;(3)求AE-CE的值.变式及结论:4.在正方形ABCD中,点E,F分别在边BC,CD上,且∠EAF=∠CEF=45°.(1)将△ADF绕着点A顺时针旋转90°,得到△ABG(如图1),求证:△AEG≌△AEF;(2)若直线EF与AB,AD的延长线分别交于点M,N(如图2),求证:EF2=ME2+NF2;(3)将正方形改为长与宽不相等的矩形,若其余条件不变(如图3),请你直接写出线段EF,BE,DF之间的数量关系.F。
山东省青岛市59中区2024--2025学年九年级上学期期中考试历史试卷
2024-2025学年度第一学期期中阶段性质量检测九年级历史试题(考试时间:90分钟;满分:80分)温馨提示:1.答卷前,考生务必将自己的姓名、准考证号等信息填写在答题卡和答题纸上。
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第I卷(共40分)一、选择题(每小题1分,每题只有一个正确选项,共40分)1.胡夫金字塔是这个国家最大的金字塔,高约146米,被列入古代世界十大奇观之列。
此外,这个国家还发现了80多座大小不等的金字塔。
如果你要去实地游览这些金字塔,应去今天的()A.埃及B.意大利C.印度D.伊拉克2.《汉谟拉比法典》规定:拥有公民权的自由民伤害同等自由民的眼睛,必须遭受同样损害;但如果损害无公民权的自由民的眼睛,则只需赔偿少量的钱财。
这反映了该法典()A.客观上迟滞巴比伦的发展B.导致巴比伦阶级矛盾激化C.养成自由民妄自尊大心理D.旨在维护奴隶主阶级利益3.“种姓”一词在印度的梵文中叫“瓦尔那”,就是颜色或品质的意思。
因此,种姓制度又叫瓦尔那制度。
这种制度()A.规定印度人法律面前都一律平等B.对印度社会的发展产生了不良影响C.认为印度人生来没有高低贵贱之分D.规定不同等级的人们之间可以通婚4.雅典人民以极大的热情建设家园,在国家和私人财富方面,雅典远超其他城邦,公职薪酬、城邦节庆方面开支远低于财政收入,国家财富储备充足。
这一黄金时代的执政者是()A.伯利克里.B.梭伦C.亚里士多德D.苏格拉底5.亚历山大攻下埃及后,接受“埃及的法老”“阿蒙神之子”等称号;征服波斯后,他则以波斯帝国的继承者自居。
亚历山大旨在()A.推行神人同形同性的理念B.获得更为广泛的统治基础C.提升马其顿军队的战斗力D.挑起被征服地区内部矛盾6.公元前450年前后制定的《十二铜表法》是罗马人最早的法律,是一部简单、保守、代表农业民族的成文法。
2023-2024学年山东省青岛五十九中学九年级物理第一学期期中达标测试试题含解析
2023-2024学年山东省青岛五十九中学九年级物理第一学期期中达标测试试题中达标测试试题注意事项:1.答题前,考生先将自己的姓名、准考证号码填写清楚,将条形码准确粘贴在条形码区域内。
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4.作图可先使用铅笔画出,确定后必须用黑色字迹的签字笔描黑。
5.保持卡面清洁,不要折暴、不要弄破、弄皱,不准使用涂改液、修正带、刮纸刀。
一、单选题1.楼梯感应灯可由声控开关(有声响时开关闭合)和光控开关(光线较暗时开关闭合)共同控制,某同学设计并组装了一个楼梯感应灯电路,出现了以下异常情况:白天有声响时感应灯亮,无声响时感应灯不亮;晚上无论有无声响,感应灯都不亮.经检查各元件都能正常工作,则下列电路中可能出现以上异常情况的是()A.B.C.D.2.如图是测量电灯两端的电压和流过电灯的电流的电路图,一同学在实际连接电路时却将电压与电流表的位置对调了,当他闭合开关后产生的后果是()A.电压表和电流表都可能烧坏 B.电压表不会烧坏,电流表可能烧坏C.电压表可能烧坏,电流表不会烧坏D.电压表和电流表都不会烧坏3.烈日炎炎的夏季,白天海滩上的沙子热得烫脚,海水却很凉爽;傍晚,沙子很快凉了下来,但海水却仍然暖暖的.同样的日照条件下,沙子和海水的温度不一样的原因是( ) A.沙子的密度比海水的密度大B.沙子的比热容比海水的比热容大C.沙子的比热容比海水的比热容小D.沙子的质量比海水小4.用细线悬挂着A、B、C三个通草球,其中任意两个通草球靠近时都互相吸引,则A.三个通草球只有一个带电B.三个通草球都带电C.三个通草球中肯定有一个不带电,另外两个带异种电荷 D.三个通草球中肯定有一个不带电,另外两个带同种电荷5.机场安检过程中,防暴犬功不可没。
即便隔着多层包装,防暴犬也能嗅出炸药的气味,这说明组成炸药的分子A.相互之间存在斥力B.相互之间存在引力C.在不停地做无规则运动D.温度越高,分子热运动越缓慢6.将两只相同的气球在衣服上摩擦后,就可以让一只气球在另一只气球上方漂浮,对此现象的解释正确的是()A.两只气球带同种电荷B.两只气球带异种电荷C.摩擦可以创造电荷D.带电体能吸引轻小物体7.如图是某校园十佳歌手海选裁判亮灯电路图,三个裁判分别控制对应的开关,同意选手晋级闭合相应开关,若绿灯亮起表示选手晋级,绿灯未亮表示选手不能晋级.则下列有关选手能否晋级的说法正确的是A.只要主裁同意,选手就晋级 B.任意两个裁判同意,选手就晋级C.只有三个裁判都同意,选手才晋级D.主裁和任意一个副裁同意,选手就晋级8.下列关于功、功率和机械效率的说法正确的是A.机械效率越高,机械做功一定越多B.机械做功越多,机械效率一定越高C.功率越大的机械,做功一定越快D.做功越快的机械,机械效率一定越高二、多选题9.关于电流的形成说法正确的是()A.电压是使自由电荷定向移动形成电流的原因B.导体两端有电压,电路中就一定有电流通过C.金属导体中的电流方向与自由电子定向移动方向相反D.规定正电荷定向移动的方向为电流方向10.如图1所示电路,电源电压保持不变,当闭合开关S,调节滑动变阻器阻值从最大变化到最小,两个电阻的“U-I”关系图象如图2所示。
2014-2015学年度上学期期中考试九年级物理试卷
2014-2015学年度上学期期中考试九年级物理试卷一、单项选择题(每小题2分,共28分)1、下列现象中,不能用来说明分子间存在着引力的是( )A 固体很难被拉长B 要用很大的力才能折断铁丝C 用胶水把纸粘在墙上D 液体和固体很难被压缩2、甲物体的温度比乙物体的温度高,则( )A.甲的内能比乙大B.甲物体中分子的无规则运动比乙剧烈C.甲物体的机械能比乙物体的大D.甲物体的分子动能的总和比乙大3、在内燃机中,实现了内能向机械能转化的是()A.吸气冲程B.压缩冲程C.做功冲程D.排气冲程4、甲、乙两物体的比热容之比为2∶3,吸收热量之比为3∶1,它们升高的温度相同,则甲、乙两物体的质量之比为()A.9∶2 B.2∶9 C.1∶2 D.2∶15、水的比热较大,人们往往利用它的这一特性为生活、生产服务,下列事例中与它的这一特性无关的是()A.让流动的热水流过散热器取暖B .冬季,晚上向稻田里放水,以防冻坏秧苗.C.汽车发动机用循环水冷却D.在较大的河流上建水电站,用水发电6、两个带电体接触后都不带电了,说明它们原来带的电是()。
A. 同种电荷B. 异种电荷C. 等量同种电荷D. 等量异种电荷7、电能表可测量下列物理量中的()A.电流B.电压C.电阻D.电能8、有两个电阻R1<R2,采用下列几种方式分别接到电压为U的电源上,接通电源后在相同时间内电流做功最少的连接方式是()A、R1与R2并联B、R1与R2串联C、只接入R1D、只接入R29、图中为路口交通指示灯的示意图。
指示灯可以通过不同颜色灯光的变化指挥车辆和行人交通行为。
据你对交通指示灯的了解可以推断()A.红灯、黄灯、绿灯是串联的B.红灯、黄灯、绿灯是并联的C.红灯与黄灯并联后再与绿灯串联D.绿灯与黄灯并联后再与红灯串联10、在用伏安法测电阻的实验中下列做法中有问题的是()A.连接线路的过程中开关应处于断开状态B.连接线路过程中滑动变阻器的滑片要放在最大电阻值的位置C.电流表串联在被测电路电压表并联在被测电阻两端D.试触时发现电流表指针的反方向偏移电压表正常此时断开电路将电池的正负极对调11、小明同学为了探究“保持电压不变电流跟电阻的关系”在如图所示的情况下将A、B两点间10Ω的电阻更换为20Ω的电阻闭合开关后下一步的操作应当是()A.记录电流表和电压表的示数 B.将滑动变阻器滑片向右移动C.将滑动变阻器滑片向左移动 D.适当增加电池的节数12、如图所示的电路电源电压不变,当滑动变阻器滑片向右移动时,电压表和电流表示数变化分别为()A.变大不变B.变大变大; C.不变变大 D.不变变小。
2014-2015初三九年级英语上学期期中考试试题
第一部分:听力 (满分20分)一、听句子,选出与句子内容相关的图画,每个句子听两遍。
(5分)1. A. B. C.2.3 A.4. A. B. C.5. A. B. C.二、听句子,选出与所听句子内容相符的正确答语,每个句子听两遍。
(共5分)6. A. You are welcome. B. That‟s right. C. It doesn‟t matter.7. A. By listening to English tapes. B. By watching English moviesC. By studying with a group.8. A. Yes, I do. B. Yes, I did. C. No, I don‟t.9. A. Me, too. B. Me neither. C. So have I.10. A. Yes, I can. B. Sure. C. No, I can‟t.三、听对话,选出能回答问题的正确选项,每段对话听两遍。
(共5分)11. What is the girl going to Shanghai for?A. For her holiday.B. For her business.C. For a test.12. How soon will the girl come back?A. In a month.B. In two weeks.C. In a week.听第二段对话材料,回答13-15题。
13. What time will the film begin?A. At 8:00 p.m.B. At 7:30 p.m.C. At 6:00 p.m.14. How many tickets has the girl got?A. One.B. Two.C. Three.15. When may the dialogue happen?A. In the morning.B. At noon.C. In the evening.四、听短文,完成下列信息表格,短文听两遍。
青岛59中初三数学期中2019-2020学年度试题(7中、26中、59中、智荣统考)
青岛59中2019—2020年期中质量检测九年级数学试题(考试时间:120分钟;满分:120分)真情提示:亲爱的同学,欢迎你参加本次考试,祝你答题成功!一、选择题(本题满分24分,共有8道小题,每小题3分)1.关于x的方程x2-2x=0的根的情况是()A、有两个相等的实数根B、有两个不相等的实数根C、没有实数根D、只有一个实数根2.某小组做“用频率估计概率”的试验时,统计了某一结果出现的频率,绘制了如图的折线统计图,则符合这一结果的试验最有可能的是()A. 在“石头、剪刀、布”的游戏中,小明随机出的是“剪刀”B. 一副去掉大小王的普通扑克牌洗勾后,从中任抽一张牌的花色是红桃C.暗箱中有1个红球和2个黄球,它们只有颜色上的区别,从中任取一球是黄球D.掷一枚质地均匀的正六面体骰子,向上的面点数是43.下列命题中,真命题是( )A.对角线相等的四边形是矩形B.对角线互相垂直的平行四边形是菱形C.对角线相等的四边形是平行四边形D.对角线互相垂直平分的四边形是正方形4.在一个不透明的口袋中装有4个红球和若干个白球,他们除颜色外其他完全相同,通过多次摸球实验后发现,摸到红球的频率稳定在25%附近,则口袋中白球可能有( ) 个.A.16B. 15C.13D.125.如图,在口ABCD中,AB=10cm, AD=15cm, AC. BD相交于点0, CE⊥BD交AD于E,则△ABE的周长为( )A.20cmB.22cmC. 25cmD.30cm6.如图,小正方形的边长均为1, 则下列图形中的三角形(阴影部分)与△ABC相似的是( )7.将一块矩形铁皮的四个角各剪去一个边长为1米的正方形后,剩下的部分刚好能围成一个容积为15立方米的无盖长方体水箱,且此长方体木箱的底面长比宽多2米.求该矩形铁皮的长和宽各是多少米?若设该矩形铁皮的宽是x米,则根据愿意,可得方程为())A.(x+2)(x-2)x1=15B. x(x-2)x1=15C.x(x+2)x1=15D. (x+4)(x-2)x1=158.如图,在矩形ABCD 中, AB= √2,E 是BC 的中点,若AE ⊥ BD 于点F ,M 是DF 的中点,连接CM 、AM,则下列正确的结论是( ) ①FC= CD ①①DBC=①FAM①EP=12CN ①矩形ABCD 的面积是2 A. ①①① B.①① C.①①①① D.①①二、填空题(本题满分18分,共有6道小题,每小题3分) 9.已知2a=3b ,则2a+b a−b=________10.元且晚会,全班同学互赠贺卡,若每两个同学都相互赠送一张贺卡,小明统计全班共送了1640张贺卡,那么全班有多少人?设全班有x 人,则根据题意可以列出方程_______。
山东省青岛第五十九中学2024-2025学年九年级上学期期中考试数学试卷(无答案)
2024-2025学年度第一学期期中阶段性质量检测九年级数学试题(考试时间:120分钟:满分:120分)温馨提示:1.答卷前,考生务必将自已的姓名、准考证号等信息填写在答题卡和答题纸上。
2.回答第I卷时,选出每小题答案后,用2B铅笔把答题卡上对应题目的答案标号涂黑。
或写在答题纸上.如需改动,用橡皮擦干净后,再选涂其他标号。
写在本试卷上无效。
3.回答第II卷时,将答案写在答题纸上.写在本试卷上无效。
第I卷(共54分)一、选择题(每小题3分,每题只有一个正确选项,共30分)1.下列方程中是一元二次方程的是()A.B.C.D.2.下列各组中的四条线段(单位:)成比例的是()A.3,6,5,4 B.3,4,6,9 C.1,5,2,3 D.2,4,5,103.四张看上去无差别的卡片上分别印有正方形、正五边形、正六边形和圆,现将印有图形的一面朝下,混合均匀后从中随机抽取两张,则抽到的卡片上印有的图形都是中心对称图形的概率为()A.B.C.D.4.下列说法正确的是()A.一组对边相等,另一组对边平行的四边形是平行四边形B.一组邻边相等的平行四边形是矩形C.菱形有四条对称轴D.对角线相等且互相垂直平分的四边形是正方形5.为执行“均衡教育”政策,某区2022年投入教育经费2500万元,预计到2024年底三年累计投入1.2亿元.若投入教育经费的年平均增长百分率为x,则下列方程正确的是()A.B.C.D.6.如图,每个小正方形边长均为1,则下列图中的三角形(阴影部分)与图中相似的是()A.B.C.D.7.如图,四边形ABCD是菱形,对角线AC,BD交于点O,E是边AD的中点,过点E作,点F,G为垂足,若,则FG的长为()22(1)3(1)x x+=+2340ax x++=21440x x+-=2(2)5x x x+=-cm1413123422500(1) 1.2x+=225002500(1)2500(1)12000x x++++=22500(1)12000x+=25002500(1)2500(12)12000x x++++=ABC△EF BD EG AC⊥⊥,1024AC BD==,A .5B .6.5C .10D .128.如图,张老汉想用长为75米的棚栏,再借助房屋的外墙(外墙足够长)围成一个面积为720平方米的矩形羊圈ABCD ,并在边CD 上留一个5米宽的门(门用其他材料),设AB 的长为x 米,则下面所列方程正确的是( )A .B .C .D .9.如图所示,E 、F 分别是正方形ABCD 的边CD ,AD 上的点,且,AE ,BF 相交于点O ,下列结论①;②;③;④中,错误的有( )A .1个B .2个C .3个D .4个10.如图,在正方形ABCD 中有一个小正方形EFGH ,其中点E ,F 分别在边AB ,BC 上,点G 在线段DF 上.若正方形ABCD 的面积为16,,则正方形EFGH 的面积为( )A.B .C .5D .25二、填空题(每小题3分,每题只有一个正确选项,共24分)11.一元二次方程的二次项系数是________,一次项系数是________,常数项是________.12.在一个不透明的口袋中,装有若干个红球和8个黄球,它们除颜色外没有任何区别,摇匀后从中随机摸出一个球,记下颜色后再放回口袋中,通过大量重复摸球试验发现,摸到黄球的频率是0.4,则估计盒子中大约(75)720x x -=(802)720x x -=(752)720x x -=(80)720x x -=CE DF =AE BF =AE BF ⊥AO OE =AOB DEOF S S =△四边形1BE =52543(2)5x x -=有红球________个.13.如图,O 是矩形ABCD 的对角线AC 的中点,M 是AD 的中点.若,则四边形ABOM 的周长为________.14.一个主持人站在舞台的黄金分割点处最自然得体,如果舞台AB 长为20米,一个主持人现在站在A 处,则他应至少再走________米才最理想.15.某学习小组同学在元旦互相赠贺年卡一张,全组共赠贺年卡90张,设这个小组共有同学x 个,根据题中的条件,列出关于x 的方程为:________________.16.小亮希望测量出电线杆AB 的高度,他在电线杆旁的点D 处立一标杆,标杆的影子DE 与电线杆的影子BE 部分重叠(即点E 、C 、A 在一直线上),量得米.则电线杆AB 的高为________米.17.如图,矩形ABCD 中,,F 为对角线AC 的中点,交BC 于E .则线段EF 的长为________________.18.如图,在平面直角坐标系中,点的坐标为,以为直角边作,并使,再以为直角边作,并使,再以为直角边作,并使…按此规律进行下去,则点的坐标为________.第II 卷(共6分)19.(本小题满分4分)513AB AC ==,215DB ED CD ==,.48AB BC ==,EF AC ⊥1A (1,0)1OA 12Rt OA A △1260A OA ∠=︒2OA 23Rt OA A △2360A OA ∠=︒3OA 34Rt OA A △3460A OA ∠=︒2024A用圆规、直尺作图,不写作法,但要保留作图痕迹,如图,是一块三角形余料,工人师傅要把它加工成一个菱形零件,使点A 为菱形的一个顶点,一组邻边分别在BA 、AC 上,另一个顶点在BC 上,试协助工人师傅用尺规画出这个菱形.结论:20.(本小题满分12分,每小题3分)解方程(1)(公式法)(2)(配方法)(3)(4)21.(本小题满分6分)随着《黑神话:悟空》这款融合了中国传统文化精髓与现代游戏技术的力作横空出世,不仅激发了玩家对神话故事的无限遐想,更意外地点燃了公众对山西这片古老士地的热情.游戏中精心选取的27处山西实景,如同一幅幅生动的历史画卷,引领我们穿越时空,感受五千年文明的深厚底蕴.某旅游公司推出“跟着悟空游山西”二日游路线.小明家、小米家利用双休日出去旅游.每次出游只能选一条路线.“跟着悟空游山西”二日游推荐路线A 、临汾线:小西天、广胜寺、铁佛寺B 、长治线:观音堂、紫庆寺C 、朔州线:尝福寺、应县木塔D 、晋中线:平遥镇国寺、平遥双林寺(1)小米家这周想选A 路线,小明家选不到A 路线的概率是多少?(2)如果小明家相约小米家一起出去旅游,两个家庭都从上面四条路线中选一条路线去游玩,请用树状图或列表的方法求出两家选取同一条路线的概率.22.(本小题满分6分)已知关于x 的一元二次方程有两个实数根.(1)求k 的取值范围:(2)若,求k 的值.23.(本小题满分8分)已知:如图,的对角线AC ,BD 交于点O ,分别过点A ,B 作连接CE 交BD 于点F .ABC △21683x x +=22450x x --=223(1)1x x -=-2750x -=24280x x k --+=12,x x 22121124x x x x +=-ABCD Y AE BD BE AC ∥,∥(1)求证:;(2)当满足什么条件时,四边形OAEB 为菱形?请说明理由.24.(本小题满分8分)2023年亚运会在杭州顺利举行,亚运会吉祥物“江南忆”公仔爆红.据统计“江南忆”公仔在某电商平台8月份的销售量是5万件,10月份的销售量是7.2万件.(1)若该平台8月份到10月份的月平均增长率都相同,求月平均增长率是多少?(2)市场调查发现,某一间店铺“江南忆”公仔的进价为每件40元,若售价为每件80元,每天能销售20件,售价每降价2元,每天可多售出8件,为了推广宣传,商家决定降价促销,同时尽量减少库存,若使销售该公仔每天获利1400元,则每件售价应降低多少元?25.(本小题满分10分)(1)【问题呈现】如图1,和都是等边三角形,连接BD ,CE .请直接写出BD 和CE 的数量关系.(2)【类比探究】如图2,和都是等腰直角三角形,.连接BD ,CE .请直接写出的值.(3)【拓展提升】如图3,和都是直角三角形,,且,连接BD ,CE .图1图2 图3①求的值;②延长CE 交BD 于点F ,交AB 于点G .若,求B P 的长.26.(本小题满分12分)已知:如图,在中,.点P 从点B 出发,沿BC 向点C 匀速运动,速度为;过点P 作,交AC 于点D .同时,点Q 从点A 出发,沿AB 向点B 匀速运动,BEF OCF ≌△△ABC ∠ABC △ADE △ABC △ADE △90ABC ADE ∠=∠=︒BD CEABC △ADE △90ABC ADB ∠=∠=︒34AB AD BC DE ==BD CE1,64BG AB CG ==Rt ABC △903cm 4cm C AC BC ∠=︒==,,1cm/s PD AB ∥速度为;当一个点停止运动时,另一个点也停止运动,连接PQ .设运动时间为t (s )(),解答下列问题:(1)当t 为何值时,四边形ADPQ 为平行四边形?(2)当t 为何值时,;(3)在运动过程中,是否存在某一时刻t ,使?若不存在,请说明理由,若存在,求出t 的值;(4)当t 为何值时,为等腰三角形?请直接写出答案.2cm/s 025t <<.PQ PD ⊥:1:10PQB ABC S S =△△PBQ △。
9上期中2014—2015年28中—即墨
2014-2015学年第一学期期中诊断性测试九年级数学试题(考试时间:120分钟满分120分)一、选择题(本题满分24分,共有8道小题,每小题3分)1、下列对矩形的判定:“(1)对角线相等的四边形是矩形;(2)对角线相互平分且相等的四边形是矩形;(3)有一个角是直角的四边形是矩形;(4)有四个角是直角的四边形是矩形;(5)四个角都相等的四边形是矩形;(6)对角线相等,且有一个直角的四边形是矩形;(7)一组邻边垂直,一组对边平行且相等的四边形是矩形;(8)对角线相等且互相垂直的四边形是矩形”中,正确的个数有()A 3个B 4个C 5个D 6个2、若,则k等于()A 3B -3CD 6个3、一个矩形的长为a,宽为b(a>b),如果把这个矩形截去一个最大的正方形后,余下的矩形与原矩形相似,则a,b应满足的关系式为()A BC D4、观察表格中的数据得出方程的一个根的十分位上的数字应是()x 1 1.1 1.2 1.3 1.4-2 -0.59 0.84 2.29 3.765菱形的周长为20,两邻角的比为2:1,则一组对边的距离为()A B C D6、在一幅长90cm,宽40cm的风景画的四周外围镶上一条宽度相同的金色纸边,制成一幅挂图,如果要求风景画的面积是整个挂图的80%,若设金色纸边的宽为xcm。
根据题意列方程,并整理得()A x2-65x+350=0 Bx2+65x-350=0 C x2+65x-225=0 D x2-65x+225=07、ΔABC中,D是AB上一个固定点。
E是AC上一个动点,若是ΔABC和ΔADE相似,则这样的点E有()A 1个B 2个C 3个D 4个8、如图,在完全重合的两张纸片ABCD中,AB=4,BC=8,将上面的矩形纸片折叠,使点C与点A重合,折痕为EF,点D的对应点为G,连结DG,则ΔDEG的面积为()A334B 6C518D536二、填空题(本题满分18分,共6道小题,每小题3分)9、如图,D、E分别为AB的三等分点,DF//EG//BC,若BC=12,则DF ,EG ;10、已知方程03kxx2=++的一个根是-1,k= ,另一根为。
青岛版九年级上册数学期中考试试卷及答案
青岛版九年级上册数学期中考试试题一、选择题(每小题3分,共60分)1.下列方程中,一元二次方程共有( )①2320x x += ②22340x xy -+= ③214x x -= ④21x =⑤2303xx -+= A . 2个 B .3个 C .4个 D . 5个 2.一元二次方程x x 22=的根是( )A .2=xB .0=xC .2,021==x xD .2,021-==x x3.如图,下列四组条件中.不能判定四边形ABCD 是平行四边形的是( ).A 、AB=DC ,AD=BCB 、AB ∥DC ,AD ∥BC C 、AB ∥DC ,AD=BCD 、AB ∥DC ,AB=DC4.下列关于矩形的说法,正确的是( )A .对角线相等的四边形是矩形B .对角线互相平分的四边形是矩形C .矩形的对角线互相垂直且平分D .矩形的对角线相等且互相平分5.用直尺和圆规作一个菱形,如图,能得到四边形ABCD 是菱形的依据是( ). A .一组邻边相等的四边形是菱形B .四边都相等的四边形是菱形C .对角线互相垂直的平行四边形是菱形D .每条对角线平分一组对角的平行四边形是菱形6.一元二次方程x 2-x+2=0的根的情况是( ).A .有两个相等的实数根B .有两个不相等的实数根C .无实数根D .只有一个实数根7.下列命题中,不正确的是( )A .关于轴对称的两个图形是全等形B .关于中心对称的两个图形是全等形C .全等的两个三角形成中心对称D .成中心对称的两个图形的对称点连线经过对称中心GF O EDCB A8.如图,在△ABC 中,BD 、CE 是△ABC 的中线,BD 与CE 相交于点O ,点F 、G 分别是BO 、 CO 的中点,连结AO.若AO=6cm ,BC=8cm ,则四边形DEFG 的周长是 ( ).A. 14cmB. 18 cmC. 24cmD. 28cm9.如图,在矩形ABCD 中,对角线AC ,BD 交与点O .已知∠AOB=60°,AC=16,则图中长度为8的线段有( ). A 、2条B 、4条C 、5条D 、6条10.已知一个菱形的周长是20cm ,两条对角线的比为4∶3,则这个菱形的面积是( ). A .12cm 2 B .24cm 2 C .48cm 2 D .96cm 211.如图,矩形ABCD 中,AB =4,BC =5,AF 平分∠DAE ,EF ⊥AE ,则CF 等于( ). A .23B .1C .32D .212.已知关于x 的一元二次方程x 2+2x ﹣a=0有两个相等的实数根,则a 的值是( ) A . 1 B ﹣1C .D . ﹣13.给出以下四个命题:①一组对边平行的四边形是梯形;②一条对角线平分一个内角的平行四边形是菱形; ③对角线互相垂直的矩形是正方形;④一组对边平行,另一组对边相等的四边形是平行四边形. 其中真命题有( )A .1个B .2个C .3个D . 4个14.图中两个四边形是位似图形,它们的位似中心是( )A .点MB .点NC .点OD .点P15.如图:等腰梯形ABCD 中 ,AD ∥BC ,AB=DC ,AD=3,AB=4,∠B=60︒,则梯形ABCD 的面积是( ).A.310B.320C.346+D.3812+16.对于任意实数x ,x 2-4x+7的值是一个( )A 负数B 非正数C 正数D 不确定17.在如图所示的平面直角坐标系内,画在透明胶片上的▱ABCD ,点A 的坐标是(0,2).现将这张胶片平移,使点A 落在点A′(5,-1)处,则此平移可以是( ) A .先向右平移5个单位,再向下平移1个单位 B .先向右平移5个单位,再向下平移3个单位 C .先向右平移4个单位,再向下平移1个单位 D .先向右平移4个单位,再向下平移3个单位18.如图,将△AOB 绕点O 按逆时针方向旋转45°后得到△A′OB′,若∠AOB=15°,则∠AOB′的度数是( ) A .25° B .30° C .35° D .40°19.如图,在宽为20米、长为30米的矩形地面上修建两条同样宽的道路,余下部分作为耕地.若耕地面积需要551米2,则修建的路宽应为( )A 、1米B 、1.5米C 、2米D 、2.5米20.如图,在正方形ABCD 中,点O 为对角线AC 的中点,过点0作射线OM 、ON 分别交AB 、BC 于点E 、F ,且∠EOF=900 ,BO 、EF 交于点P .则下列结论中: (1)图形中全等的三角形只有两对;(2)正方形ABCD 的面积等于四边形OEBF 面积的4倍;(3)BE+BF=2 0A ;(4)AE 2+CF 2=20P •OB ,正确的结论有( ). A .1 8.2 C .3 D .4A DB C二、填空题(每小题3分,共12分)21.将两个形状相同的三角板放置在一张矩形纸片上,按图示画线得到四边形ABCD,则四边形ABCD 的形状是.22.如图,两块相同的三角板完全重合在一起,∠A=30°,AC=10,把上面一块绕直角顶点B逆时针旋转到△A′BC′的位置,点C′在AC上,A′C ′与AB相交于点D,则C′D= .23.写一个以2和-3为根的一元二次方程.24.已知ABCD的周长为28,自顶点A作AE⊥DC于点E,AF⊥BC于点F. 若AE=3,AF=4,则CE-CF= .三、解答题(共48分)25.解方程(每小题5分,共10分)(1)3x2 -9x+2=0(配方法)(2)(3x+2)(x+3)=x+1426.如图,已知四边形ABCD为平行四边形,AE⊥BD于E,CF⊥BD于F.(1) 求证:BE = DF;(6分)(2) 若M、N分别为边AD、BC上的点,且DM=BN,试判断四边形MENF的形状(不必说明理由).(2分)27.近年来,某县为发展教育事业,加大了对教育经费的投入,2009年投入6000万元,2011年投入8640万元.(1)求2009年至2011年该县投入教育经费的年平均增长率;(6分)(2)该县预计2012年投入教育经费不低于9500万元,若继续保持前两年的平均增长率,该目标能否实现?请通过计算说明理由.(2分)28.已知:在梯形ABCD 中,AD ∥BC ,∠ABC=90°,BC=2AD ,E 是BC 的中点,连接AE 、AC .(1)点F 是DC 上一点,连接EF ,交AC 于点O (如图1),求证:△AOE ∽△COF ;(4分)(2)若点F 是DC 的中点,连接BD ,交AE 与点G (如图2),求证:四边形EFDG 是菱形.(6分)图 1OFDCE BA29.如图,在梯形ABCD 中,AD ∥BC ,AD=AB ,过点A 作AE ∥DB 交CB 的延长线于点E .(1)求证:∠ABD=∠CBD ;(4分) (2)若∠C=2∠E ,求证:AB=DC ;(4分)(3)在(2)的条件下,sinC =45,AD =2,求四边形AEBD 的面积.(4分)附加题:在一次研究性学习活动中,某小组将两张互相重合的正方形纸片ABCD 和EFGH 的中心O 用图钉固定住,保持正方形ABCD 不动,顺时针旋转正方形EFGH ,如图所示. (1)小组成员经观察、测量,发现在旋转过程中,有许多有趣的结论. 下面是旋转角度小于90°时他们得到的一些猜想:①ME =MA ;②两张正方形纸片的重叠部分的面积为定值;③∠MON 保持45°不变.请你对这三个猜想做出判断(正确的在序号后的括号内打上“√”,错误的打上“×”): ①( );②( );③( ).(2)小组成员还发现:(1)中的△EMN 的面积S 随着旋转角度∠AOE 的变化而变化. 请你指出在怎样的位置时△EMN 的面积S 取得最大值. (不必证明)NHME DA O(3)上面的三个猜想中若有正确的,请选择其中的一个给予证明;若都是错误的,请选择其一说明理由.答案:1—5 :BCCDB 6—10:CCADB 11—15:CBBDA 16—20:CBBAC21.将两个形状相同的三角板放置在一张矩形纸片上,按图示画线得到四边形ABCD,则四边形ABCD的形状是等腰梯形.22.如图,两块相同的三角板完全重合在一起,∠A=30°,AC=10,把上面一块绕直角顶点B逆时针旋转到△A′BC′的位置,点C′在AC上,A′C ′与AB相交于点D,则C′D=2.5 .23.写一个以2和-3为根的一元二次方程 (x-2)(x+3)=0 . 24.已知ABCD 的周长为28,自顶点A 作AE ⊥DC 于点E ,AF ⊥BC 于点F. 若AE=3,AF=4,则 CE -CF= . 【答案】2+3或2-3。
2014-2015学年度第一学期期中考试成绩表
序号班级学号学生姓名名次试场号座位号教室语文数学英语3018141830夏涛5871七(4)105117118 5713141357郑博凡4124七(9)106120116 4822142248叶心雨241017七(7)103118116 2518141825王嘉成661七(3)108116118 596140659周雨奇131214七(9)108115119 3213141332徐雯竹18713七(4)105120118 6013141360郑欣楠121221七(9)104120119 6022142260周雅璇31220七(9)104120119 2522142225邵晨悦2523七(2)105118116 4913141349俞沁知11023七(7)108120116 5321142153俞丽娜1401120七(8)99120117 922142209李章熠25213九(23)106117112 5813141358郑建华781210七(9)105119118 6222142262朱铭铭36132七(10)107120114 1513141315吕逸垚30324八(22)106117112 2117141721童恩伟15055七(2)105120114 76140607江宇航10425九(23)100120112 2322142223饶明凯54512七(2)105117116 256140625汪可5524七(2)106120115 406140640杨骏越75824七(5)98120110 222142202程子睿14717九(22)104117106 236140623苏怡萱22511七(2)104118113 2818141828吴贤栋34616七(3)101111115 226140622苏文瑶2357七(2)109117116 2222142222平乐乐7358七(2)107115116 2422142224芮思雅64518七(2)109115112 356140635徐思睿10588七(5)101117116 4522142245杨玉纹84104七(7)109117107 1618141816刘心语11144七(1)108118114 618141806胡悦滔2122九(23)108117118 5113141351俞尧怀16118七(8)108112115 5721142157张小蔓487584九(13)106111118 322142203邓瑶108118九(22)103113113 4321142143叶佳辉293923七(6)104110112 213141302陈锦霖1914九(22)100116116 218141802方正正5715九(22)105120116 4218141842叶俣瀚48910七(6)104120113 4718141847俞梦莹40109七(7)100114115 4818141848俞倩雯311018七(7)99120116 5422142254曾绎哲411123七(8)100120117 2013141320潘喆19051七(2)102118109 6213141362郑照阳45133七(10)107115111 1315141513李雨晨262319八(22)98115119 4013141340杨晔原52823七(5)92118116 4318141843尹靓197919七(6)100116113 5718141857郑乐妍14125七(9)103117113 286140628王怡欣297618七(3)107109113 5518141855张子叶49121七(9)103120113 3622142236吴宗慧55811七(5)101107119 407140740夏钰菲12592七(6)93120108 5922142259周甜甜821216七(9)100115116 4617141746俞梓明455494九(2)96112106 1213141312刘荟怡14439八(22)97116114 3413141334徐笑然33723七(4)105103117 3922142239肖依乐46816七(5)1081081145622142256郑鑫鑫79123七(9)103101118 136140613刘飞扬50311八(22)104118111 276140627王斯佳7612七(3)104118115 3811141138徐佳豪155815七(5)104112114 2913141329夏梦玲43621七(3)104117111 134140413李佳慧103312八(22)107106113 198140819刘明韬173418七(1)107118108 506140650俞跃15112七(8)93111116 6422142264祝利成102139七(10)103115110 713141307纪宇豪9324九(23)102118116 722142207黄紫琪22927九(23)103118117 2413141324王俊熠175519七(2)105118113 3916141639吴锁彤138818七(5)100116112 5022142250余静烜32113七(8)96120114 513141305龚睿143119九(22)101114111 1518141815刘捷100325八(22)97117114 2121142121刘紫欣12854七(2)105116108 2212141222马小珂11559七(2)106118118 3113141331徐文杨5178七(4)102103111 546140654郑雯蕾1101124七(8)95118113 2822142228王锦鸿26615七(3)103101109 5913141359郑沁雅1351217七(9)104116118 204140420刘魏25153七(2)97115113 575140557周嘉宇182127七(9)98110111 1119141911何思蝶3382120七(18)99117115 587140758郑雅琦3735819九(13)104117110 418141804韩琳心39110九(22)101120115 820142008韩溢楠220211九(23)108114105 1913141319潘仁杰83417七(1)107104115 201140120邱可成180424七(1)102114115 2519141925骆子仪19863七(3)104109115 2722142227铁战逸9613七(3)99116114 2918141829吴禹铜101622七(3)103114107 1722142217毛梦婷5948七(1)99115110 4122142241徐佳颖6098七(6)105106116 6622142266祝卓骏901314七(10)110115112 188140818刘涵243415七(1)108118103 2922142229王留贵37620七(3)100118105 3718141837徐江汉63813七(5)98118115 436140643叶璨榕77917七(6)104117111 5222142252袁全程101115七(8)96108115 368140836吴燕琪530412八(15)105117118 4313141343叶娅雯3304618八(20)100114111 813141308蒋雨榕62210九(23)102112113 2512141225唐佳奇23165七(3)101113111 402140240徐静蕾21295七(6)105115111 4422142244徐曾玮65101七(7)109110109 48140804管彭玥253111九(22)11096118 913141309柯静之302215九(23)102112117 2321142123毛晶晶163513七(2)105100111 4922142249余锦敏741024七(7)103105104 514140451叶昊1141110七(8)92118115 3118141831夏文涛16179七(4)101103115 416140641杨凯毅4297七(6)93120103 4722142247叶驰城661010七(7)102110109 176140617刘森4152611七(23)103105110122142201陈杰8911九(22)92117108 2418141824汪子政208520七(2)106110113 345140534项梦丽17081七(5)94115112 4022142240谢婷11391七(6)93116114 5722142257周迪67126七(9)102115111 613141306韩舟3131724七(14)101102113 2711141127施钰燕481344八(8)105100118 274140427吕伟豪504345八(8)99118115 196140619毛欣悦56416七(1)105101111 3713141337徐芸44812七(5)101107114 586140658周庚申1301212七(9)106117109 6614141466祝子豪2261318七(10)102100106 84140408黄雅岚4461917七(16)106109106 206140620毛子怡38421七(1)93115117 2218141822饶家炜856七(2)104102111 3313141333徐西玥86718七(4)103107115 4711141147余进进2811016七(7)100107113 6323142363周天航129137七(10)10499113 6721142167周子晗2221320七(10)103106111 284140428吕兆轩3403421八(8)101110111 1022142210连鹤30534八(22)100116104 3022142230王鹏飞17975七(4)101115109 5513141355张新雷201126七(8)96110113 636140663诸荣邦27135七(10)10090118 113141301陈嘉龙3281323七(10)102107100 323142303陈智慧4291518七(12)102107111 478140847叶锐506504九(3)9411693 6122142261朱豪力509616九(16)10096110 309140930徐燕燕17474七(4)99112105 487140748余梅蝶2991022七(7)106102114 526140652张颖琦2041118七(8)97105109 5818141858郑麒麟35129七(9)101115114 669140966祝雯钰2141317七(10)101117109 446140644叶浩轩10294719八(21)103120108 818141808纪云琪1729九(23)99104116 307140730苏葆蓝16573七(4)97107113 3818141838徐展学29814七(5)94120106 501140150张庆豪185115七(8)94111116 5919141959周博凡2721219七(9)101114107 2022142220潘奕3662817八(2)109110103 688140868俞子泽391678九(8)101108102 3013141330徐嵩洲7672七(4)97114107 4918141849俞文韬941025七(7)100109104 456140645叶岚钦371487九(1)100114105 5822142258周宏建851211七(9)98114100 22140202陈宇4771422七(11)99100109 3918141839杨骏鹏118817七(5)96118104 522142205官芷聪81114九(22)101112110 4518141845余子怡87105七(7)100115113 5118141851俞泽鸿53119七(8)9993109 6015141560周淑慧2331224七(9)101108110 6421142164周欣怡1781310七(10)101118108 106140610林点342214七(18)94104109 1510141015毛敬昊3612421七(21)96114104 4813141348俞宽依锦7785023九(3)98107110 5016141650余贵林422528九(5)9111210955140505黄禹桐96115九(22)94102112 381140138叶芯蕊4764220八(16)10196108 4210141042徐秀磊375464八(20)99118106 1017141710刘灿159216九(23)105104118 2213141322邵子瑞156510七(2)84114112 4020142040谢雯静14693七(6)98114110 168140816刘玢茜8202518七(22)10511796 47140704付佳丽266112九(22)93120110 410141004黄雨晴290113九(22)94113101 1113141311林曼婷7035八(22)105110108 1822142218毛旭英141412七(1)104103111 181140118毛翊璇184413七(1)93100112 466140646叶子扬265108七(7)97116112 5320142053俞佳伟2481122七(8)91114111 16140601陈佳琪3701324七(10)10310599 101140110刘珍凤430215七(18)95107107 689140968祝宇煊643679九(8)92120110 1013141310李奕豪245218九(23)93120112 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4715141547徐肇阳315502九(3)8087111 489140948周基铧5315020九(3)9892101 563140356俞梦茹413576九(11)999696 5815141558周嘉欣751592九(14)94105107 235140523王烨彬203514七(2)97112118 3418141834项紫怡379398八(13)97109106 3514141435阮淑莹392402八(14)9799108 565140556郑晓涛588577九(11)10181112 666140666祝之谦7446521九(20)87100101 6810141069颜佳仪15466716九(8)929797 249140924吴燕敏278522七(2)107104119 2119141921吕涵3952914八(3)9688108 2622142226沈宜发617337八(7)99102106 3710141037吴智瞳11784210八(16)9698821313141313刘凌轩106313八(22)8811489 209140920陶少军21352七(2)9710693 3217141732夏俊毅284716七(4)9695106 6023142360周利军2611225七(9)9699107 67140706高齐610182七(15)9411394 3314141433毛桢涛4523816八(12)95116101 4520142045叶晨曦6344813九(1)10482111 4622142246姚立鑫680499九(2)919896 687140768朱浩15476717九(8)9311391 661140166祝嘉振1201315七(10)92102104 2715141527沈礼健10203414八(8)9998104 4418141844余鑫雅9754718八(21)9195109 535140553俞潆洁6085417九(7)10580103 5519141955郑国海9385618九(10)919998 5720142057俞梓桐365583九(13)9691107 1310141013吕煊142314八(22)9294105 5512141255郑雨欣224122七(9)978595 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4623142346杨霞561497九(2)1067198 6021142160周思琦397609九(15)10075106 647140764周怡婷774644九(19)968693 399140939余乡坤279822七(5)949286 714141407付华星703193七(16)9194109 1214141412黄晨923231七(20)967598 2023142320刘奕毅6622820八(2)9172101 2123142321刘宇濠6522918八(3)8810096 2216141622毛丽8393014八(4)957987 253140325毛烨烨7173218八(6)8210298 3017141730吴熙娴4993612八(10)967786 452140245叶梦琪5494811九(1)948581 4614141446夏晴晴10494915九(2)1049990 549140954周琪8225518九(9)878994 5523142355张妍9555620九(10)8590111 74140407黄思思3571822七(15)998083 81140108刘婧3831915七(16)938194 1023142310何敏奇618218七(18)8183104 1120142011姜一村908227七(19)9410483 2114141421林菲宇924301八(4)929694 6719141967祝正楠9776614九(21)946698 6920142069吴超帅15656815九(12)92101108 1318141813林诗攀219315八(22)9294100 6413141364周盈颖71138七(10)9691107 166140616刘名瑞5722515七(22)997597 3120142031温婷781379八(11)1008092 3312141233吴选旺5773817八(12)908597 486140648余悦885513九(4)919499 5616141656张恩妤334573九(11)91101109 6616141666周子晔6596518九(20)9910098 511141105付鸿涛8071716七(14)1087094 133140313侯慧敏6962314七(20)9810379 155140515毛诗翔7872425七(21)937984 1611141116李卓群1212262七(23)949292 3119141931邵凯706378八(11)937689 339140933姚晨8993824八(12)939374 3623142336项莉娜3244019八(14)88114103 615140561周翩7886112九(16)8784101158140815林馨梦倩985255七(22)1028085 3712141237肖朋君1124428八(16)768595 6218141862周延晟13736216九(17)927795 1014141410顾睿睿30333八(22)9984103 4118141841叶晶812458八(19)10277110 547140754袁婉婷7345515九(9)947894 5821142158周晨骊4285821九(13)10470102 5921142159周浪9695923九(14)759490 2710141027王凯琳592346八(8)879785 437140743徐轩轩4664621八(20)8583103 444140444谢燮8844717八(21)897997 6520142065诸泽人1187656九(20)908096 920142009黄奕豪5202010七(17)919597 118140811李莹佩833225七(19)1036486 2010141020宁蕊7372821八(2)1046398 245140524王紫莉3413122八(5)7995100 279140927谢子盈7363410八(8)9710572 295140529吴梦莹1016362八(10)777799 3210141032吴奇颖962384八(12)879279 566140656郑颖娉10305715九(11)988781 413141304程国凉9501623七(13)9195101 915141509黄琼407209七(17)8898102 374140437翁建军5054122八(15)987391 5210141052俞凯翊8235323九(6)967086 5212141252郑琪1076545九(7)6311187 5515141555俞日琪484568九(10)9473105 5816141658张越4715822九(13)938097 2515141525佘孝孝9253220八(6)847797 493140349叶钰7705114九(4)949781 5511141155郑心雨533569九(10)8889107 6011141160周文爵8706014九(15)869592 610141006纪红红723184七(15)996895 717141707赖喧妍3161820七(15)9988106 1121142111蒋昕仪10792210七(19)968991 416141604付小强8551620七(13)919193 95140509赖梦婷5412011七(17)9289100 147140714纪文重8862410七(21)867874 187140718林已航11712716八(1)9210565 1919141919刘甜1023284八(2)947290 2116141621马明慧6712919八(3)849293 2219141922罗昊宇473309八(4)968980 2915141529吴昊3483515八(9)909784 524140452叶茹萍7715322九(6)907896 6316141663周世腾753637九(18)899692 698140869吴信通15496812九(12)7110692 3110141031王芝欣255711七(4)8979102 2217141722涂乐7543013八(4)828196 2419141924罗琪860325八(6)927975 2615141526佘雨欣8243311八(7)958396 5419141954张曾镖5985510九(9)889272 1015141510黄涛692219七(18)8548103 1116141611李卫健5352121七(18)8510288 264140426吕林影9443316八(7)937291 3521142135夏聚邦893409八(14)905988 3613141336徐宇轩579413八(15)958890 5423142354张京翰7675516九(9)76851045613141356张玥405575九(11)9087107 6114141461周静薇582618九(16)9177110 6219141962周平辉599626九(17)9177107 325140532夏灵奔5273722八(11)918496 473140347杨圣杰8655010九(3)9010158 823142308韩邓骆9101922七(16)878198 814141408付婷9221923七(16)988896 1811141118刘雅婷438275八(1)9568104 2820142028汪慧颖4263423八(8)10061101 2813141328吴韵思13003512八(9)968894 5514141455张怡静6305614九(10)8968106 6415141564周意4976321九(18)8974106 6620142066祝铖玺7646522九(20)799394 6823142368林龙1567688九(12)949085 120142001陈冠熙14512九(22)9067102 88140808赖思康1098201七(17)9711871 1115141511江溢669223七(19)1016997 1610141016毛俊杰5322514七(22)858692 251140125吴鑫5703215八(6)819886 3419141934危佳芮12343921八(13)898291 4511141145颜雯10344818九(1)936192 463140346颜梦鑫9324913九(2)969691 5020142050余思怡458529九(5)8799103 584140458张文珺1245598九(14)977873 6010141060张甜慧11016020九(15)919090 543140354余越强9125520九(9)8791101 483140348姚雨芝2751021七(7)888088 321142103付颖颖5361521七(12)9491101 45140504冯丽7201617七(13)8968101 719141907郭奕辰12651911七(16)938884 83140308官庶卉3551914七(16)949396 2819141928毛钰1006358八(9)818391 5710141057张璠8065810九(13)998584 1212141212纪凯怡4692219七(19)9680100 2719141927毛文慧9663413八(8)995996 342140234吴莹6213914八(13)9856102 4720142047叶洲逸320503九(3)847495 4917141749郑浩峰1250523九(5)779791 5115141551叶协涛595534九(6)8683102 5217141752周超974544九(7)868197 25140502陈锡浩1087159七(12)928783 167140716李俊1288265七(23)857991 275140527吴姜业398343八(8)907491 3719141937吴凯雯13054213八(16)1096485 3921142139徐婷10584321八(17)919890 431140143余松1068473八(21)909083 4814141448叶新建853512九(4)8592100 537140753余忆欣1072551九(9)839074 5416141654俞航10355522九(9)947688 592140259周安琪3855914九(14)879388 626140662朱继熠573624九(17)937493 682140268祝莹10396711九(8)907290 214141402陈莹莉691154七(12)837995 417141704黄菲8251619七(13)858393 612141206顾正男872186七(15)9060104 711141107黄诗韵808195七(16)9481100。
2014—2015年度第二学期 九年级期中测试
2014—2015年度第二学期九年级期中测试2014—2015年度第二学期九年级期中测试潍坊新华中学史晓燕于建梅一、单项选择(共15小题;每小题1分,满分15分)从下列各题所给的A、B、C、D四个选项中,选出可以填入空白处的最佳选项。
1. ____9:16 p.m. ______September 29, 2011, Tiangong 1 was sent up into space successfully.A. At, inB. At, onC. In, inD. In, on2.Now China is fighting against illegal cooking oil(地沟油), a kind of waste oil _____can cause a lot of illness.A. whichB. whoseC. whoD. what3. The Chinese mainland has become the world's second______ market for iPhone.A. bigB. biggerC. biggestD. the biggest4. —Do you know whose car is it?—It belongs to_____. It isn’t ______.A. her, mineB. hers, mineC. her, myD. hers, my5.—How long have you________?—Since two years ago.A. bought the cameraB. been awayC. left homeD. married6. —Your watch looks so nice. It must be expensive.—No. I ____ 20 yuan on it.A. costB. paidC. tookD. spent7. —Look! The man at the gate _______be ourheadmaster. He is always standing thereevery morning.—No, it_______ be him. He is holding a meeting in the office now.A. must; can’tB. must; mustn’tC. can’t; can’tD. can’t; mustn’t8.We are doing much better _____English ______our teacher’s help.A. in; atB. at; inC. in; withD. with; with9. _______, Coca-Cola began to enter China’s market.A. In 1970’sB. In 1970sC. In the 1970s’D. In the 1970s10.Put it down, Jim. You must n’t read ______letter.A. else anyone’sB. anyone’s elseC. anyone else’sD. anyone else11. We will go out for a picnic if it _____tomorrow.A. won’t rainB. isn’t rainingC. don’t rainD. doesn’t rain12. ______the doctors in the hospital is about100 and one fourth of them are _______doctors.A.A number of; manB. The number of; menC. A number of; menD. The number of; man13. —What did your father ask you just now?—He asked me ______.A. Whom I was chatting withB. where I am with my friendsC. when would I go homeD. if I have finished my homework14. Difficulties are nothing _____we are not afraid of them.A. forB. asC. ifD. whether15. Email is very popular today. People ______write letters to each other now.A. oftenB. usuallyC. seldomD. never二、完形填空(共10小题;每小题1分,满分10分)阅读下面短文,掌握其大意,然后从A、B、C、D四个选项中选出最佳选项。
2014-2015学年度第二学期九年级语文期中考试
新海实验中学教育集团2014-2015学年度第二学期期中考试九年级语文试题参考答案及评分标准一、积累•运用(30分)1.略2.(3分)C3.(3分)B4.(1)(2分)汲谛(2)(2分)事—示真—箴(3)(3分)示例一:认真地看草,可以听到它阐明的柔韧义,请摘来一棵丰富自己的精神。
示例二:默默地看石,可以听到它叙述的朴实义,请取来一枚充实自己的思想。
5. (1)(3分)示例:①时迁,鼓上蚤,擅偷②花荣,小李广,擅射箭③戴宗,神行太保,擅神行之术。
(2)(2分)发现书店未经上级批准,准备扩大规模和印制进步刊物,并招收新店员;书架上有惹人注目的进步书籍;发现郑克昌所写的诗歌,是抄袭《新华日报》副刊的;听到陈松林汇报,从没到过书店的黎纪纲,冒雨叫走了郑克昌。
(写出两条即可)(3)(2分)《钢铁是怎样炼成的》钢是在烈火里烧、高度冷却中炼成的,因此它很坚固。
这一代人也是在斗争中和艰苦考验中锻炼出来,并学会了在生活中不灰心丧气。
《骆驼祥子》以“骆驼祥子”来命名有三层含义:①点明小说的主人公——祥子;②概括著作的一个主要情节——骆驼祥子称号的得来;③揭示主人公的性格——像骆驼一样吃苦耐劳、沉默憨厚。
《红岩》“红岩”在书中是一个地名,指地下党在重庆办事处的驻地;指齐晓轩牺牲时脚下浸透鲜血的石头、象征着革命烈士坚贞不屈的革命英雄主义精神。
(意对即可)二、理解•感悟(60分)(一)6.(3分)因为是旧帘,燕子才能识别而入;因为是旧帘,才能照应上句,表明主人是寻常百姓。
“不下旧帘遮”体现了老百姓与燕子的深厚情谊。
7. (2分)从视觉与嗅觉角度,生动形象地写出了新燕筑巢、为追求幸福生活辛勤忙碌的情景。
画面富有美感,极具诗情画意。
(1)(二)8.(3分)D 9.(4分)曲池穿牗/飞沼拂几/绿映朱栏/丹流翠壑/乃可以称园矣 10.(2分)瓜洲的各个园林亭榭,都是凭借假山而有名声,这样的假山石放置在于园中就不会使人心感不满了。
2014-2015学年59中初三年级期中考试单选及二卷
1.---Linda, do Chinese people celebrate ________Easter Day?----No. This is the first time I have celebrated ______festival.A. the; theB. the; aC. /; theD. /; a2. ---How do you study ____a test?--- I study ______working ____a group.A. for, by, withB. for, by, atC. for, in, withD. of, in, by3. He _____listen to pop music, but now he ______dancing.A. is used to, used toB. used to, is used toC. used to, is used forD. used to, used to4. ---I don’t believe the toy is made _____hand. The patterns are really fine.---- I don’t believe it, either. But no machine is used during the whole process.A. forB. withC. byD. in5. If our government ______attention to controlling food safety now, our health ____in danger.A. won’t pay, isB. doesn’t pay; isC. won’t pay, will beD. doesn’t pay, will be6. In our school library there ___a very small number of books on science, and in these years the number of them _____growing larger and larger.A. are, isB. is, areC. have, areD. have, is7. ---Would you like to watch Transformer 4 in the IMAX theatre with me?----I’d love to, ____I have watched it twice. The movie is really a treat to eyes.A. ifB. sinceC. becauseD. even though8. I don’t think it is good for young people to ___too much time ___online.A. spend, chattingB. take, chattingC. spend, to chatD. take, to chat9. We can’t work out the physics problem. Can you tell us ____?A. how to doB. what to do itC. how to do itD. what should we do10. He decides __________his life and promises _______a better person.A. to change, to beB. changing, beingC. changing, to beD. to change, being11. --–Will we have dinner at the Hope Restaurant?---- We’ll go there if the show ___ before 6. but I don’t know if there __ any free tables then.A. will end, areB. will end, will beC. ends, areD. ends, will be12. The poor girl’s parents ____last year. Since then she _____her grandparents’ home.A. were died, have lived inB. were dead, had come toC. died, has come toD. died, has lived in13. He finds studying in groups ___to improve spoken English. Because they often waste time talking in Chinese instead of in English in the end.A. interestingB. scaredC. helpfulD. useless14. Meimei emailed to me and said she would live in London for ___four or five years.A. otherB. the otherC. anotherD. the others15. ---Excuse me. Could you tell me ____?--- Certainly. Go straight ahead and you will see it on your right.A. where the post office isB. where was the post officeC. where is the post office16. ---An iPad is really a great thing.----- I agree. However, ____. Using iPads too much has a bad influence on us.A. every dog has its dayB. the grass is always greener on the other sideC. no pains, no gainsD. every coin has two sides.17. When you meet some new words, you can _________in your dictionary.A. look it upB. look up itC. look them upD. look up them18. I don’t find ___possible to learn a foreign language without much memory work.A. thisB. thatC. whichD. it19. ---I feel stressed from time to time. Could you give me some advice?---- _________sharing your worries with your parents.A. Why don’t youB. How aboutC. Why notD. Would you like20. Jenny is practicing the piano. ______she is playing!A. How carefulB. How carefullyC. What carefulD. What carefully21. In China, people _______say “toilet” or “washroom” instead of “restroom”.A. normallyB. especiallyC. speciallyD. politely22. ---Who will take part in the contest?--- ________---I asked who would take part in the contest.A. Excuse meB. PardonC. SorryD. Why not23. The girl doesn’t have a partner to ______A. practice EnglishB. practice English inC. practice English withD. practice English on24. Not only ____of the movie, but they have already seen it.A. they have heardB. have they heardC. they heardD. did they hear25. ---What do you think of my shirt?It _____cotton.----- It looks nice on you.A. is made inB. is made up ofC. is made ofD. is made into1.Father’s Day __________on the 3 Sunday in June.2.He is looking forward to ________more about the accident.3.Our English teacher thinks _____is important when we learn English grammar.4.On Mid-autumn night, my mom often ________some mooncakes, and fruits in the garden.5.We have learned so many new words today, boys and girls. Please remember_them after class.6.Tea ________in many different areas in China.7.Why don’t you join an English club _______speaking English?South Korean actor Kim Soo-hyun’s popularity has swept(横扫) _____Asia. He is ______so popular because of the role he played in the popular TV drama My love from the Star. In the drama, Kim plays a 400-year-old alien and ends up ____in love with a modern-day actress.This is not the first success for the young star. Since he ______a professional actor seven years ago, Kim _____more than 20 prizes for acting. Kim’s serious attitude(态度) towards acting brings ____great success. A director once said that the dramas with Kim in were all popular. It is because “he always studies the story very ________before acting out the character.”As you can see, attitude is everything. Your success ___________your attitude.任务阅读Baseball—it’s just a word, but for millions of Americans, ①it brings to mind so many images: hot dogs, cold beers, sunny after-noons…For many people,baseball is the game of fathers and sons. Fathers and sons catch with each other on lawns (草坪) in the US. A father’s favorite team becomes his son’s. Grandfathers talk to their grandsons about games played long ago.Many American kids collect baseball cards. The cards have pictures of their favoriteplayers on them. In school, friends exchange baseball cards. ②about, baseball, famous, are, students, by, players, talked, often.③Baseball p layers are known as “the boys of summer” because the sport is most often played in summer. You don’t need to be of a certain size or shape to play baseball. You don’t have to be tall like a basket ball player or strong like an American footballer. You just need to want to have fun.Baseball is not as fast-paced a game as basketball. W hen you go to see a game, there’s time to relax, talk and get to know other people.Baseball may not be the most popu lar sport in the US, but it is the most traditional. It’s not just a game any more, but an important part of American culture, like apple pie and grandma’s house.1.将①句子改成被动语态(2分)_____________________________________2.将②排序(2分)________________________________________________3.将③译成汉语(2分)__________________________________________________4.To play baseball, you need to be very strong or tall, don’t you? (1分)___________5.Which game is faster, baseball or basketball? (1分)______________任务阅读When I was 5 years old, I went to the USA with my mom. I can still remember the first Halloween holiday I had in the USA.On the morning of Halloween, we paid a visit to a pumpkin farm. Each of us brought a pumpkin to school with us. I used the pumpkin to make a lantern which had two triangle eyes and a scary mouth.In the afternoon, we put on the Halloween costumes and went on parade in school. Some of the costumes were nice, but some of them looked scary. I chose to wear a suit of Superman’s clothes.I did a lot of things that day, but the part I liked best was “trick or treat” in the evening. After dinner, I went outside with an empty bag. I hoped to get a lot of candies from people. At first, I was a bit nervous, so when I knocked at the door, my heart was beating very fast. A lady came out, and I said carefully to her, “Trick or treat.” My voice was very low, and even myself could hardly hear it. To my surprise, the lady was so kind to give me two candy bars, and I was so excited, t hanked the lady and moved on. I couldn’t remember how many houses I visited, but I could remember how many candies I got—I got 91 pieces of candy that day, and I was so proud of myself.What a happy Halloween I had! And I wish we could have a Halloween every month!根据短文内容,完成句子(每空一词,1分)。
山东省青岛二十六中、五十九中联考九年级(上)期中数学试卷
21. 如图,△ABC 中,AB=BC,AD⊥BC 于点 D,DE∥AB 交 AC 于点 E,过点 C 在△ABC
7.【答案】C
【解析】
解:A.在“石头、剪刀、布”的游戏中,小明随机出的是“剪刀”的概率是 ,不符 合题意; B. 暗箱中有 1 个红球和 2 个黄球,它们只有颜色上的区别,从中任取一球是 黄球的概率为 ,不符合题意;
C.掷一个质地均匀的正六面体骰子,向上的面点数是 4 的概率为 ≈0.17,符
合题意;
成的两个三角形恰与原三角形均相似,试判断△ABC 的形状,并说明理由.
【探究 2】用内共相似点探究三角形的内角关系 3如图 2,在△ABC 中,∠A<∠B<∠C,高线 CD 与角平分线 BE 交于点 P,若 P 是△ABC 的一个内共相似点试说明点 E 是△ABC 的边共相似点,并直接写出∠A 的度数;
(2)在展览期间,平均每天可售出个人票 2000 张,现主办方决定对个人购票也采取 优惠措施,发现原定票价每降低 2 元,平均每天可多售出个人票 40 张,若要使平 均每天的个人票收入达到 241500 元,且能有效控制游览人数,则票价应降低多少 元?
23. 已知 P 为△ABC 所在平面内一点,连接 PA,PB,PC,在△PAB,△PBC 和△PAC
中,若存在一个三角形与△ABC 相似(全等除外)那么就称 P 为△ABC 的共相似点”
根据“共相似点“是否落在三角形的内部,边上或外部,可将其分为内共相似点”,“
2014-2015学年度上学期九年级英语期中考试(一)
XX中学2014—2015学年度学科竞赛决赛九年级英语试卷(满分120分,考试时间120分钟)第一部分听力(共四节,满分30分)第一节听句子,选出和句子内容相关的图画。
注意每个句子听两遍。
(共5小题,每小题1分,满分5分)1.2.3.4.5.第二节听句子,选出与所听句子内容相符的正确答语。
注意每个句子听两遍。
(共5小题,每小题1分,满分5分)6. A. Sure, here you are. B. Thank you. C. Yes, I can.7. A. She’s kind. B. She’s cooking. C. She’s a teacher.8. A. With pleasure. B. It’s boring. C. I’d like to.9. A. No, he can’t. B. No problem. C. So do I.10. A. Yes, please. B. Sorry, I won’t. C. Thank you.第三节听对话,选出能回答问题的正确选项。
注意每段对话听两遍。
(共10小题,每小题1分,满分10分)听第一段对话,回答第11-12小题。
11. What’s the boy’s problem?A. He forgets a lot of new words.B. He can’t get the pronunciation right.C. He doesn’t get much writing practice.12. How does the girl study English?A. She joins an English club.B. She listens to tapes.C. She writes the words in a notebook and studies as often as she can.听第二段对话,回答第13-14小题。
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1.---Linda, do Chinese people celebrate ________Easter Day?----No. This is the first time I have celebrated ______festival.A. the; theB. the; aC. /; theD. /; a2. ---How do you study ____a test?--- I study ______working ____a group.A. for, by, withB. for, by, atC. for, in, withD. of, in, by3. He _____listen to pop music, but now he ______dancing.A. is used to, used toB. used to, is used toC. used to, is used forD. used to, used to4. ---I don’t believe the toy is made _____hand. The patterns are really fine.---- I don’t believe it, either. But no machine is used during the whole process.A. forB. withC. byD. in5. If our government ______attention to controlling food safety now, our health ____in danger.A. won’t pay, isB. doesn’t pay; isC. won’t pay, will beD. doesn’t pay, will be6. In our school library there ___a very small number of books on science, and in these years the number of them _____growing larger and larger.A. are, isB. is, areC. have, areD. have, is7. ---Would you like to watch Transformer 4 in the IMAX theatre with me?----I’d love to, ____I have watched it twice. The movie is really a treat to eyes.A. ifB. sinceC. becauseD. even though8. I don’t think it is good for young people to ___too much time ___online.A. spend, chattingB. take, chattingC. spend, to chatD. take, to chat9. We can’t work out the physics problem. Can you tell us ____?A. how to doB. what to do itC. how to do itD. what should we do10. He decides __________his life and promises _______a better person.A. to change, to beB. changing, beingC. changing, to beD. to change, being11. --–Will we have dinner at the Hope Restaurant?---- We’ll go there if the show ___ before 6. but I don’t know if there __ any free tables then.A. will end, areB. will end, will beC. ends, areD. ends, will be12. The poor girl’s parents ____last year. Since then she _____her grandparents’ home.A. were died, have lived inB. were dead, had come toC. died, has come toD. died, has lived in13. He finds studying in groups ___to improve spoken English. Because they often waste time talking in Chinese instead of in English in the end.A. interestingB. scaredC. helpfulD. useless14. Meimei emailed to me and said she would live in London for ___four or five years.A. otherB. the otherC. anotherD. the others15. ---Excuse me. Could you tell me ____?--- Certainly. Go straight ahead and you will see it on your right.A. where the post office isB. where was the post officeC. where is the post office16. ---An iPad is really a great thing.----- I agree. However, ____. Using iPads too much has a bad influence on us.A. every dog has its dayB. the grass is always greener on the other sideC. no pains, no gainsD. every coin has two sides.17. When you meet some new words, you can _________in your dictionary.A. look it upB. look up itC. look them upD. look up them18. I don’t find ___possible to learn a foreign language without much memory work.A. thisB. thatC. whichD. it19. ---I feel stressed from time to time. Could you give me some advice?---- _________sharing your worries with your parents.A. Why don’t youB. How aboutC. Why notD. Would you like20. Jenny is practicing the piano. ______she is playing!A. How carefulB. How carefullyC. What carefulD. What carefully21. In China, people _______say ―toilet‖ or ―washroom‖ instead of ―restroom‖.A. normallyB. especiallyC. speciallyD. politely22. ---Who will take part in the contest?--- ________---I asked who would take part in the contest.A. Excuse meB. PardonC. SorryD. Why not23. The girl doesn’t have a partner to ______A. practice EnglishB. practice English inC. practice English withD. practice English on24. Not only ____of the movie, but they have already seen it.A. they have heardB. have they heardC. they heardD. did they hear25. ---What do you think of my shirt?It _____cotton.----- It looks nice on you.A. is made inB. is made up ofC. is made ofD. is made into1.Father’s Day __________on the 3 Sunday in June.2.He is looking forward to ________more about the accident.3.Our English teacher thinks _____is important when we learn English grammar.4.On Mid-autumn night, my mom often ________some mooncakes, and fruits in the garden.5.We have learned so many new words today, boys and girls. Please remember_them after class.6.Tea ________in many different areas in China.7.Why don’t you join an English club _______speaking English?South Korean actor Kim Soo-hyun’s popularity has swept(横扫) _____Asia. He is ______so popular because of the role he played in the popular TV drama My love from the Star. In the drama, Kim plays a 400-year-old alien and ends up ____in love with a modern-day actress.This is not the first success for the young star. Since he ______a professional actor seven years ago, Kim _____more than 20 prizes for acting. Kim’s serious attitude(态度) towards acting brings ____great success. A director once said that the dramas with Kim in were all popular. It is because ―he always studies the story very ________before acting out the character.‖ As you can see, attitude is everything. Your success ___________your attitude.任务阅读Baseball—it’s just a word, but for millions of Americans, ①it brings to mind so many images: hot dogs, cold beers, sunny after-noons…For many people, baseball is the game of fathers and sons. Fathers and sons catch with each other on lawns (草坪) in the US. A father’s favorite team becomes his son’s. Grandfa thers talk to their grandsons about games played long ago.Many American kids collect baseball cards. The cards have pictures of their favorite players on them. In school, friends exchange baseball cards. ②about, baseball, famous, are, students, by, players, talked, often.③Baseball p layers are known as ―the boys of summer‖ because the sport is most often played in summer. You don’t need to be of a certain size or shape to play baseball. You don’t have to be tall like a basket ball player or strong like an American footballer. You just need to want to have fun.Baseball is not as fast-paced a game as basketball. W hen you go to see a game, there’s time to relax, talk and getto know other people.Baseball may not be the most popu lar sport in the US, but it is the most traditional. It’s not just a game any more, but an important part of American culture, like apple pie and grandma’s house.1.将①句子改成被动语态(2分)_____________________________________2.将②排序(2分)________________________________________________3.将③译成汉语(2分)__________________________________________________4.To play baseball, you need to be very strong or tall, don’t you? (1分)___________5.Which game is faster, baseball or basketball? (1分)______________任务阅读When I was 5 years old, I went to the USA with my mom. I can still remember the first Halloween holiday I had in the USA.On the morning of Halloween, we paid a visit to a pumpkin farm. Each of us brought a pumpkin to school with us. I used the pumpkin to make a lantern which had two triangle eyes and a scary mouth.In the afternoon, we put on the Halloween costumes and went on parade in school. Some of the costumes were nice, but some of them looked scary. I chose to wear a suit of Superman’s clothes.I did a lot of things that day, but the part I liked best was ―trick or treat‖ in the evening. After dinner, I went outside with an empty bag. I hoped to get a lot of candies from people. At first, I was a bit nervous, so when I knocked at the door, my heart was beating very fast. A lady came out, and I said carefully to her, ―Trick or treat.‖ My voice was very low, and even myself could hardly hear it. To my surprise, the lady was so kind to give me two candy bars, and I was so excited, thanked the lady and moved on. I couldn’t remember how many houses I visited, but I could remember how many candies I got—I got 91 pieces of candy that day, and I was so proud of myself.What a happy Halloween I had! And I wish we could have a Halloween every month!根据短文内容,完成句子(每空一词,1分)。