重庆二外初2015级(九年级)第一次月考试题
重庆二外初2012—2013学年(九年级)第一次月考试题
四川外语学院 重庆第二外国语学校 2012—2013学年度(下期)第一学月考试初2013级 数学试卷(全卷共五个大题,共26个小题;满分150分,考试时间120分钟)参 考 公 式:抛 物 线 2(0)y ax bx c a =++≠的 顶 点 坐 标 为 24(,)24b ac b a a--,对 称 轴 公 式 为 2bx a=-. 一、选择题:(本大题12个小题,每小题4分,共48分)在每个小题的下面,都给出了代号为A 、B 、C 、D 的四个答案,其中只有一个是正确的,请将答题卡上题号右侧正确答案所对应的方框涂黑(或将正确答案的代号填人答题卷中对应的表格内).1.在3,﹣2,0,﹣5这四个数中,最小的数是( ) A .﹣5 B .﹣2 C .3 D .02.下列几个图形是国际通用的交通标志,其中不.是中心对称图形的是( )3.计算(m 2n )2的结果是( )A .2 m 2n B .m 4n C .m 4n 2D .m 2n 24.如图,A 、B 、C 是⊙O 上的三点,已知︒=∠60O ,则=∠C ( ) A .︒20 B .︒30 C .︒25 D .︒455.分式方程xx 321=-的解是( ) A .3-B . 2C .3D .2-6.在Rt△ABC 中,∠C=90°,若AC=2BC ,则tan A 的值是( )A .12B .2 CD7.下列调查中,适宜采用全面调查(普查)方式的是( )A .调查全国青少年儿童的睡眠时间4题图!A B C DB .调查本班50名同学的身高情况C .调查我市居民的年人均消费D .调查某日光灯管厂一批灯管的使用寿命8.将一副三角板如图放置,使点A 在DE 上, BC ∥DE ,则∠AFC 的度数为( ) A .45° B .50° C .60° D .75°9.已知关于x 的方程4132=--)(x m 的解是m x -=,则m 的值是( )A .7-B .7C .57-D .57 10.小蕾今天到学校参加考试,从家里出发走10分钟到离家500米的地方吃早餐,吃早餐用了20分钟,再用10分钟赶到离家1000米的学校参加考试.这一过程中,能反映小蕾离家的距离y (米)与时间x (分钟)的函数关系的大致图象是( )11.用棋子摆出下列一组“口”字,按照这种方法摆下去,则摆第13个“口”字需用棋子( )A .48枚B .44枚C .52枚D . 56枚12.已知二次函数y =ax 2+bx +c 的图象如图所示,它与x 轴的两个交点分别为(-1,0),(3,0).第2个“口” 第1个“口” 第3个“口”………………A .x y O B .x y OC .x y OD .xyOADEF8题图12题图对于下列命题:①b -2a =0;②abc <0;③a -2b +4c <0;④8a +c >0.其中正确的有( ) A .3个 B .2个 C .1个 D .0个二、填空题:(本大题6个小题,每小题4分,共24分)请将每小题的答案直接填在答题卡(卷)中对应的横线上.13.去年我国民生产总值约为520000亿元,那么这个数据用科学记数法表示为____________亿元. 14.若两个相似三角形的面积之比为1∶16,则它们的周长之比为__________.15. 某班体育委员记录了第一小组七位同学定点投篮(每人投10个)的情况,投进篮框的个数为6,10,5,3,4,8,4,这组数据的极差是___________.16.已知圆锥的高为 8cm ,底面圆的直径为 12cm , 则该圆锥的侧面积为_________cm 2.(结果保留π )15.将13根火柴棍分成三堆(火柴棍保持完整,不能折断). 如果分成的三堆火柴棍数分别相同算作同一种分法(如:2,5,6和6,2,5),那么分成的三堆火柴棍中任取两堆刚好能摆成一个正方形的概率是 .16.某次象棋比赛有奇数个选手参加,每位选手都与其他选手比赛一盘,记分原则是:胜一盘得2分,和一盘各得1分,负一盘得0分,已知其中2名选手共得16分 ,其他选手的平均分数为整数,则此次比赛的选手个数是 人.三、解答题:(本大题2个小题,每小题7分,共14分)解答时每小题必须给出必要的演算过程或推理步骤,请将解答书写在答题卡(卷)中对应的位置上. 19.︒+-+--+---301213427201333sin )()()(π20.如图,A 、C 、F 、B 在同一直线上,AC=BF ,AE=BD ,且AE ∥BD .求证:EF∥CD.四、解答题:(本大题4个小题,每小题10分,共40分)解答时每小题必须给出必要的演算过程或推理步骤,请将解答书写在答题卡(卷)中对应的位置上.21.先化简,再求值:221443(1)21x x x x x x x -+-÷+-+--,其中x 是不等式2513x x -<-的最小整数解.22.如图,经过点A (-2,0)的一次函数 y =ax +b (a ≠0) 与反比例函数 y =xk(k ≠0)的图象相交于P 、Q 两点,过点P 作PB ⊥x 轴于点B . 已知tan ∠PAB =23,点B 的坐标为(4,0).(1)求反比例函数和一次函数的解析式; (2)若点Q 的坐标是Q(,6)m -,连接OQ ,求△COQ 的面积.23.第十二届全国人大代表选举的基本原则是:城乡同比选举,实现人人平等、地区平等、民族平等.据新华网2月28日公布,全国5个少数民族自治区的人大代表如下: (1)这五个地区代表人数的中位数是____________.(2)全国4个直辖市及港、澳、台地区的代表人数的平均数是 55.8 人 ,请补全折线统计图 (作图要求用签字笔).(3)3月17日,第十二届全国人大代表第一次会 议闭幕后,五个少数民族自治区各派一名代 表参加四个直辖市及港澳台代表团的交流5961港澳北京天津上海重庆人数(人)地区656055504540活动,重庆代表团将从中选取两名代表参加 活动.请你用列表法或画树状图的方法,求 出所选代表恰好同时是广西代表和宁夏代 表的概率.24.如图,在矩形ABCD 中,点M 、N 在线段AD 上,60MBC NCB ∠=∠=︒,点E 、F 分别为线段CN 、BC上的点,连接EF 并延长,交MB 的延长线于点G ,EF=FG.(1)点K 为线BM 的中点,.若线段AK=2,MN=3,求矩形ABCD 的面积; (2)求证:MB=NE+BG.25. 某公司研制出一种新型科技产品,每件产品的成本为2400元.在该产品的试销期间,为促销,公司决定:商家一次购买这种新型产品不超过10 件时,每件按3000元销售;若一次购买该种产品超过10件时,每多购买一件,所购买的全部产品的销售单价均降低10元,但销售单价均不低于2600元;且商家一次性购买该产品不能超过60件.(1)商家一次购买这种产品多少件时,销售单价恰好为2600元?C(2)设商家一次购买这种产品x 件,开发公司所获的利润为y 元.在公司规定范围内,商家购买多少件时,公司可获得最大利润?最大利润是多少?(3)某商家一次购买这种产品a 件,以每件3200元的价格全部售出,共获利24750元(不计其它成本),请求出产品件数a 的值.26. 如图,在Rt△ABC 中,∠C=90°,AC=8,BC=6,点D 在AB 上,AD=2,点E 、F 同时从点D 出发,分别沿DA 、DB 以每秒1个单位长度的速度向点A 、B 匀速运动,点E 到达点A 后立刻以原速度沿AB 向点B 运动,点F 运动到点B 时停止,点E 也随之停止.在点E 、F 运动过程中,以EF 为边作正方形EFGH ,使它与△ABC 在线段AB 的同侧.设E 、F 运动的时间为t 秒,正方形EFGH 与△ABC 重叠部分面积为S . (1)当t 为何值时,正方形EFGH 的顶点G 刚好落在线段AC 上; (2)当02t <≤时,求出s 与t 的函数关系式,并写出t 的取值范围;(3)当2t ≥时,是否存在t 的值,使EGB ∆为等腰三角形,若存在,求出所有满足条件的t 的值;若不存在,请说明理由.重庆二外2012—2013学年度(下期)第一学月考试数学试题参考答案及评分意见备用图备用图备用图一、选择题:二、填空题:13.51025⨯.; 14.1∶4; 15.7; 16.60π; 17.75; 18.9. 三、解答题19.解:原式=3﹣4+1﹣8﹣1+21…………(5分) =217-……………………(6分) 20.证明:∵AC=BF∴AC+CF=BF+CF即AF=BC ………………………(1分) ∵AE ∥BD∴∠A=∠B………………………(2分) ∵AE=BD∴△AEF ≌△BDC …………………(4分) ∴∠EFA=∠DCB∴EF ∥CD ………………………(6分)21.解:原式21(2)(1)(1)32(1)1x x x x x x x -+--=-÷+-- ………………………(3分) 21(2)12(1)(2)(2)x x x x x x x --=-⋅+-+- ………………………(4分) 122(2)x x x x -=-++ 222x x =+ ………………………(6分)解不等式2513x x -<-得:2->x ∵x 是不等式2513x x -<-的最小整数解.∴1-=x ……………………(8分) ∴原式212122-=-⨯+-=)()(x ………………………(10分)第一次 第二次 22.解:(1)∵ A (-2,0),B (4,0),∴ AB =6. ………………………(1分) ∵ tan∠PAB =23, ∴ 362BP =, 得BP =9. ∴ P (4,9) . ……(2分) 把P (4,9)代入y =xk中,得 k =36. ∴ 反比例函数的解析式为 y =36x.…………………………………… (3分) 将A (-2,0), P (4,9) 代入y =ax +b 中,得 20,49.a b a b -+=⎧⎨+=⎩… (5分)解得 3,23.a b ⎧=⎪⎨⎪=⎩ ………………………………………………………(6分)∴ 一次函数的解析式为 y =332x +. ……………………………… (7分) (2)由(1)得Q(6,6)-. ………………………………………… (8分)△COQ 的面积为S =21×3×6=9. …(10分) 23.解:(1)这五个地区代表人数的中位数是58; …… (2分) (2)设北京地区代表人数x 人,则6143596155.85x ++++=55x =补充折线统计图,如图: …………(6 分)(3)列表如下:(表格正确2分,错一个得1分,错2个及2个以上0分)…(8 分)广西(A ) 西藏(B ) 新疆(C ) 宁夏(D ) 内蒙(E )广西(A ) (A,B) (A,C) (A,D) (A,E) 西藏(B ) (B,A) (B,C) (B,D) (B,E) 新疆(C ) (C,A) (C,B) (C,D) (C,E) 宁夏(D )(D,A)(D,B)(D,C)(D,E)由以上表格可得,所选两个地区的代表恰好同时是广西代表和宁夏代表的概率212010P ==. …………(10分) 24.(1)解:∵矩形ABCD ,∴AD=BC ,AB=CD;在Rt ABM ∆中,∵点K 为斜边BM 中点,∴BM=2AK=4, …………(1分) ∵∠MBC=60︒,∴∠ABM=30︒∴AM=12BM=2,AB === …………(2分) 在CDN ∆中,∵∠NCB=60︒,∴∠NCD=30︒,∴2=…(3分) ∴2327AD =++=∴矩形ABCD 的面积是:7= ………(4分)(2)证明:过点G 作GHNC 交CB 的延长于点H . ………(5分)∵AB=CD,∠BAM =∠CDN=90︒,AM=AN ,∴△AB M ≌△DCN(SAS),∴BM=CN 。
重庆实验外国语学校2015-2016学年度下期第一次月考考试初三数学试题(word版无答案)
重庆实验外国语学校2015-2016学年度下期第一次月考考试初三数学试题(满分150分,12O 分钟完成)注意事项:1.试题的答案书写在答题卡上不得在试卷上直接作答; 2.作答前认真阅读答题卡上的注意事项;3.作图(包括作辅助线),请一律用黑色签字笔完成:4.考试结束,由监考人员将试题和答题卡一并收回.一、选择题:(本大题共12个小题,每小题4分,共48分)在每个小题的下面,都给出了代号为A 、B 、C 、D 的四个答案,其中只有一个是正确的,请将答题卡上题号右侧正确答案所对应的方框涂黑。
1.实数-5,0,中最大的数是( )。
A.3B.0C.2.下列4个图形中,是中心对称图形但不是轴对称图形的是( )。
3.计算22(3)x y -的结果是( )。
A 、423xy - B 、429x y - C 、429x y D 、49x y4.在今年的“希望工程”捐款活动中,某班级一小组7名同学积极捐出自己的零花锇,奉献自己的爱心,他们捐款的数额分别是(单位:元)5O 、20、5O 、30、25、50、55,这组数据的众数和中位数分别是( )。
A 、50元 30元 B 、50元 40元 C 、50元 50元 D 、55元 50元⒌方程组y 326x x y -=⎧⎨+=⎩的解为( )。
A 、34x y =⎧⎨=⎩B 、30x y =⎧⎨=⎩C 、61x y =⎧⎨=⎩D 、6-1x y =⎧⎨=⎩6.已知一个多边形的内角和等于它的外角和的2倍,则这个多边形的边数为( )。
A 、8 B 、7 C 、6 D 、57.分式方程23122x x x+=---的解为 ( )A 、1B 、2C 、无解D 、0A 、150°B 、140°C 、100°D 、40°9.如图,PA 、PB 是O的切线,点A 和B 是切点,AC 是O 的直径,已知∠P=5O °,则∠ACB 的大小是( )A 、60°B 、65°C 、70°D 、75°10.如图是用长度相等的小棒按一定规律摆成的一组图案,第1个图案中有6根小棒,第2个图案中有11根小棒,…,则第6个图案中有( )根小棒。
2015初三下学期第一次月考试卷2.pdf
2015年初三下学期第一次月考试卷满分100分第一部分听力技能(共两节,计20分)略第二部分知识运用(共两节,计20分)第一节语法填空(共10小题,计10分)从A、B、C三个选项中选出最佳答案填空。
()21.--- Do you know ______girl in green?--- Yes, she is my classmate Nancy. She ______isoutgoing girl in our class.A. the; aB. the; anC.a ; a()22. Anna does ______ math than her brother John.A. well inB. better atC. better in()23. It is said that some tall buildings ______in this city.A.builtB. will buildC. will be built()24. We should do what we can______ water.A. saveB.to saveC. saving______from my home to our school.()25. It’s aboutC. ten minutes’ walkA. ten minutes walkB. ten minute’s walk()26. They caught the boy______ broke the window.A. whomB.whichC. that()27. The teacher asked the students______.A. if they were interested in EnglishB. what were they interested inC. what they can do with computers()28. — Look! A man is cutting a tree on the moon.— It ______ be true. The teacher said there is no air on the moon.A. can’tB. may notC. mustn’t()29._____ Linda _____ her brother like collecting stamps.A. Not onlt; but alsoB. Both; andC. Neither; nor()30. ---What’s your favorite_____,Tina?---A Bite of China, all my family like to watch it especially my mom.A. instructionB. programC. entertainment第二节单词填空(10小题,计10分)o go out to do something. They can do almost _ In an age of computers, people don’t need t31__on the Internet: they watch movies, listen to music, shop and find information __32__ searchengines (引擎) like Google.Google is a powerful search engine. Type a key word into it and you ____33_ find whateveryou want. __ 34I’m not here to promote (宣传) Google. I’d like to __35 you how the word“Google” become a verb outof a successful company’s name._37 In the US, __36___ people want to find something on the Internet , they don’t say,“ Let for it on the Internet!” They just say, “Let’s Google it!” Americans use the phrase often in their daily life.The verb “Google” is becoming ___38_ popular. The Oxford English dictionary added it, as a___39___ in 2006.In China, the same goes for Baidu, a popular Chinese search engine. Talk to Chinese youthabout searching a topic online and they might say, “Let’s Baidu it!”The language is changing so amazingly. ___40__ great the world is! Let’s Google it! Let’s Baidu it!( )31. A. everything B. something C. nothing( )32. A. in B. on C. with( )33. A. should B. will C. must( )34 A. Because B. And C. But( )35. A. tell B. speak C. watch( )36. A. after B. when C. since( )37. A. wait B. surf C. search( )38. A. less and less B. more and more C. more or less( )39. A. book B. letter C. word( )40. A. How B. Who C. What第三部分阅读技能(共两节,计40分)第一节图表阅读A阅读下面的图表,做41~42小题。
重庆第二外国语学校2015-2016学年九年级(上)期中试题
四川外语学院重庆第二外国语学校2015—2016学年度(上期)中期考试初2016级历史试卷(全卷五个大题,共26个小题:满分50分,考试时间:与思想品德共用90分钟)一、选择题:本大题共15小题,每小题1分,共15分。
在备选答案中只有一项是符合题目要求的,请将正确答案填写在答题卷的方框内。
1.“猿人”是对下面哪一时期的人的称呼?()A.正在形成的人 B.完全形成的人 C.早期智人 D.晚期智人2.大河流域以其独特的地理环境孕育了人类璀璨的文明。
在尼罗河流域孕育的古代人类文明是()A.古印度文明B.古巴比伦文明 C.古希腊文明 D.古埃及文明3.7世纪,穆罕默德顺应阿拉伯社会的发展趋势,创立政教合一的伊斯兰教国家的地点是( )A.亚历山大B.麦地那C.麦加D.大马士革4.公元前5世纪后期,古希腊著名的奴隶制城邦雅典达到全盛,经济繁荣,文化昌盛,奴隶主民主政治发展到古代世界的顶峰,当时雅典的执政官是()A.汉谟拉比 B.马可·波罗 C.伯利克里 D.梭伦5.罗马共和国时期没有君主,国家的最高官职是()A.元老 B.执政官 C.首席将军 D.元帅6.意大利科学家布鲁诺因反对教会,批判神学而被捕入狱,最后被烧死在罗马鲜花广场的火刑柱上。
在西欧封建时代,经常会有人因思想或学术上的创新而被视为“异端”,受到宗教裁判所的审判。
这种现象说明了()A.教会成为欧洲最大的土地所有者 B.在精神和文化领域,神权凌驾一切C.西欧封建国家内部管理权力分散 D.西欧封建制度等级森严7.《荷马史诗》是一部不朽的世界文学名著,它是()A.研究早期希腊社会的重要史料 B.阿拉伯帝国民间故事集C.古希腊的著名悲剧代表作品 D.研究法国城市兴起的史料8.古希腊人善于思考和探索。
以发现杠杆定律和浮力定律而闻名的科学家是()A.爱迪生B.爱因斯坦C.牛顿D.阿基米得9.2014年上海“亚信峰会”国宴上,考虑到贵宾来自不同国家,熬汤时特地选择了穆斯林清真食材。
2015年秋九年级第一次月考试题
2015年秋九年级第一次月考试题第一部分听力第一节(共5小题,每小题一分)听下面五段小对话和对话后的问题,从每小题A、B、C、三个选项中选出最佳答案。
读一遍。
()1.A.For three years B. For two years C.For one year( ) 2.A.Yes,she can. B.Now ,she can’t. C.Maybe.( ) 3.A.A student. B.A child laborer. C.A nurse.( ) 4.A.Beijing’s ring roads. B.Suizhou’s squares.C.Tianjin’s food.( ) 5.A.At home. B.In the part. C.In his office. 第二节(共15小题,每小题一分)听下面三段长对话和一段独白,每段长对话和独白有几个小题,从题中所给的A.B.C.三个选项中选出最佳选项.每段对话或独白读两遍.听下面一段对话,回答第6—8小题.( )6.How long haven’t they seen each other ?A.For 2 years.B. For 4 years.C. Since 2 weeks ago.( )7.What did the man use to wear ?A Suits. B. T-shirts. C. Jeans.( )8.Where does the man work ?A In the school. B. In a park. C.In a company.听下面一段对话,回答第9-11小题.()9.How many classes for beginners are there in a week ?A OneB TwoC Three.( )10.What time is the evening class over ?A At7:30B At 8:30C At 9:30.( )11.when will Judy probably have her piano lessons?A.On Tuesday morning.B.On Tuesday evening .C.On Wednesday evening听下面一段对话,回答12-15小题。
外研版九年级英语上学期第一次月考试题(附答案)
九年级上学期第一次月考英语试题第I卷一、听力(25分)I.听句子,选择适当答语,每个句子读两遍。
(5分)1.A.Well,you won’t.B.You’re welcome. C.Yes,I'd love to.2.A.By practicing much.B.I like playing. C.A basketball player.3.A.OK,I’m coming.B.Yes,it does. C. It’S really bad.4.A.I know one.B.Good luck. C. That's great.5.A.I love cartoons.B.In the evening. C.On the Internet.II.听句子,选择与句子内容相对应的图片,每个句子读两遍。
(3分)6. 7. 8.III.听对话和问题,选择能回答所给问题的正确答案,对话和问题读两遍。
(6分)9.How does Bob often learn English?A.By learning with his friends.B.BY learning with his classmates.C.By learning alone.10.Why does Tom look sad today?A.Because he didn’t like English.B.Because he lost his English book.C.Because he did badly in the exam.11.What mistakes does the boy o ften make?A.Grammar mistakes.B.Pronunciation mistakes.C.Vocabulary mistakes.12.What subject is Tom weak in?A.Physics. B.Chemistry. C.Geography.13.Whose jacket is this?A.Anna’s. B. Bob’s. C.Michael’s.14.Why was George late for work?A.His alarm clock didn’t work.B.He met the traffic jam.C.His car was broken.IV.听对话,根据对话内容选择每个问题的最佳答案,对话和问题读两遍。
2015-2016学年重庆实验外国语学校九年级(上)第一次月考数学试卷
2015-2016学年重庆实验外国语学校九年级(上)第一次月考数学试卷一、选择题:(本大题共12个小题,每小题4分,共48分)在每个小题的下面,都给出了代号为A、B、C、D的四个答案,其中只有一个是正确的,请将正确答案填在对应的表格中.1.(4分)(2015秋•重庆校级月考)下列各点在抛物线y=﹣x2+1上的是()A.(1,2)B.(﹣1,0)C.(2,5)D.(3,﹣5)2.(4分)(2015秋•重庆校级月考)抛物线y=﹣﹣5的顶点坐标是()A.B.C.D.3.(4分)(2015秋•重庆校级月考)某同学在用描点法画二次函数y=ax2+bx+c图象时,列A.0 B.﹣1 C.﹣4 D.24.(4分)(2015秋•重庆校级月考)将二次函数y=2x2﹣4x+1化成顶点式是()A.y=2(x+1)2﹣1 B.y=2(x﹣1)2﹣1 C.y=2(x+1)2+1 D.y=2(x﹣1)2+1 5.(4分)(2015秋•重庆校级月考)二次函数y=﹣3x2﹣3x+5与x轴的交点个数是()A.2个B.1个C.0个D.无法确定6.(4分)(2015秋•重庆校级月考)二次函数y=x2﹣6x+c的图象经过A(﹣1,y1),B(3,y2),C(4,y3)三点,则y1,y2,y3的大小关系是()A.y2>y1>y3B.y1>y2>y3C.y1>y3>y2D.y3>y1>y27.(4分)(2015秋•重庆校级月考)抛物线y=﹣x2+(b﹣1)x﹣3的对称轴为y轴,则b的值为()A.﹣1 B.1 C.0 D.﹣28.(4分)(2015•锦州)在同一坐标系中,一次函数y=ax+2与二次函数y=x2+a的图象可能是()A.B.C.D.9.(4分)(2015秋•重庆校级月考)某幢建筑物从16m高的窗口A,用水管向外喷水,喷出的水流呈抛物线状(抛物线所在的平面与墙面垂直,如图),如果抛物线的最高点M离墙1m,离地面18m,则水流落地点B离墙的距离OB是()A.2m B.3m C.4m D.5m10.(4分)(2015秋•重庆校级月考)如图,每一幅图中均含有若干个正方形,第1幅图中有1个正方形;第2幅图中有5个正方形;按这样的规律下去,第4幅图中有()个正方形.A.30 B.31 C.32 D.3311.(4分)(2015秋•重庆校级月考)已知抛物线y=ax2+bx+c(a≠0)在平面直角坐标系中的位置如图所示,则下列结论:①abc<0;②b2﹣4ac>0;③a﹣b+c=0;④2a﹣b=0.正确的有()A.1个B.2个C.3个D.4个12.(4分)(2015秋•重庆校级月考)如图,正方形ABCD的顶点B、C在x轴的正半轴上,反比例函数y=(k≠0)在第一象限的图象经过顶点A(a,4)和CD边上的点E(b,2),过点E的直线l交x轴于点F,交y轴于点G(0,﹣1),则△OFG的面积是()A.B.C.D.二、填空题:(本题共6小题,每小题4分,共24分)请把下列各题的正确答案填写在对应的横线上.13.(4分)(2015秋•重庆校级月考)抛物线﹣2x+3的开口向下,则m的值为______.14.(4分)(2015秋•重庆校级月考)已知二次函数y=﹣+2x+1,当y随x的增大而增大时,x的取值范围是______.15.(4分)(2016•枣庄校级模拟)已知二次函数y=ax2+bx+c(a≠0)的图象如图所示,则不等式ax2+bx+c<0的解集是______.16.(4分)(2015秋•重庆校级月考)已知二次函数y=2x2﹣8x﹣1的图象向右平移2个单位,再向上平移1个单位后的解析式是______.17.(4分)(2014秋•沙坪坝区校级期末)从﹣1,0,1,2,3这五个数中,随机抽取一个数记为m,则使关于x的不等式组有解,并且使函数y=(m﹣1)x2+2mx+m+2与x轴有交点的概率为______.18.(4分)(2015秋•重庆校级月考)已知四边形ABCD,AD∥BC,AB⊥BC,AD=1,AB=2,BC=3,若P为AB边上任意一点,延长PD到E,使DE=2PD,再以PE,PC为边作平行四边形PCQE,则对角线PQ的长的最小值是______.三、解答题:解答时每小题必须给出必要的演算过程或推理步骤.19.(12分)(2015秋•重庆校级月考)计算或解方程:(1)(2)(a2b﹣2ab2﹣b3)÷b﹣(a﹣b)2(3).20.(10分)(2015秋•重庆校级月考)我校初三年级在开学初进行了跳绳测试.某班体育老师告诉该班体育委员:班上只有8%的同学得到了满分20分,要加油.体育委员将跳绳测试的统计结果绘制成如下的统计图,以便根据班级情况进行针对性训练.请你结合图中所给信息解答下列问题:(1)请把条形统计图补充完整;(2)已知全校初三共有1500名学生,请你根据以上统计结果估计全校跳绳成绩在17分以下的约有______人;(3)针对班级目前的情况,体育委员决定将跳绳成绩在17分或17分以下的同学分成两组进行强化训练,现准备从得满分的4名同学中随机选择两名担任组长.已知得满分的同学只有1名女生.请你利用树状图或列表的方法求出这两名组长是一男一女的概率.21.(8分)(2015秋•重庆校级月考)在直角坐标平面中,O为坐标原点,二次函数y=x2+bx ﹣3的图象与x轴的负半轴交于点A,与x轴的正半轴交于点B,与y轴交于点C,且S△OAC=.(1)求此二次函数的解析式.(2)如果点P为抛物线的顶点,求以A、B、C、P为顶点的四边形的面积.22.(8分)(2015秋•重庆校级月考)某校为了缓解周末放假时带来的交通拥堵问题,和公交公司商量周末安排公交接送孩子到指定区域,公交车送一个孩子的车费成本是2元,经过调研如果车票定价是3元,有500个孩子愿意同乘同一个批次的公交车,而车票定价每上涨0.1元其愿意同乘同一个批次的孩子就会减少10个.问:(1)为了减轻孩子的经济负担又实现公交公司每送一次达到800元利润,应将车票定价为多少元?(2)公交公司准备把所得利润捐献给希望小学,该怎样定价,才能使每次的利润最大呢?最大利润是多少?23.(8分)(2015秋•重庆校级月考)因山体滑坡,需将一段50米长的滑坡体清除,滑坡体横截面是如图所示的△ABC.测得堡坎坡面AC的坡度是1:1,滑坡体坡面AB的坡角是30°,滑坡体底宽BC=13米.(1)请你算出滑坡体的土方量是多少立方米?(2)某工程队负责清除滑坡体.按计划开工5天时遇暴雨停工3天.再开工时增加了大型机械,效率提高了40%,结果比原计划提前了2天完成任务.求原计划每天清除土方多少立方米?(结果精确到1立方米,参考数据≈1.414,≈1.732,≈2.236).24.(8分)(2015秋•重庆校级月考)小明在课外学习时遇到这样一个问题:定义:如果二次函数y=a1x2+b1x+c1(a1≠0,a1,b1,c1是常数)与y=a2x2+b2x+c2(a2≠0,a2,b2,c2是常数)满足a1+a2=0,b1=b2,c1+c2=0,则称这两个函数互为“旋转函数”.求函数y=﹣x2+3x﹣2的“旋转函数”.小明是这样思考的:由函数y=﹣x2+4x﹣3可知,a1=﹣1,b1=4,c1=﹣3,根据a1+a2=0,b1=b2,c1+c2=0,求出a2,b2,c2,就能确定这个函数的“旋转函数”.请参考小明的方法解决下面问题:(1)直接写出函数y=﹣x2+4x﹣3的“旋转函数”;(2)若函数y=﹣x2+mx﹣3与y=x2﹣3nx+n互为“旋转函数”,求的值;(3)设点A(m,n)在抛物线上L:y=ax2+bx+c的图象上,证明:点A关于原点的对称点在抛物线L的“旋转函数”上.(4)已知函数y=﹣(x+1)(x﹣4)的图象与x轴交于点A、B两点,与y轴交于点C,点A、B、C关于原点的对称点分别是A1,B1,C1,试证明经过点A1,B1,C1的二次函数与函数y=﹣(x+1)(x﹣4)互为“旋转函数”.25.(12分)(2015秋•重庆校级月考)已知Rt△ABC≌Rt△CDE;现将它们摆放成图①所示位置,其中B、C、D三点在同一直线上,连接AE.(1)如图①,若AB=2,BC=4,求AE的长;(2)如图②,取AE的中点M,连接BM、DM,证明:BM=DM;(3)如图③,将图①的Rt△CDE以直线CD为对称轴向下翻折,仍然连接AE,取AE的中点M,连接BM、DM,请问:BM=DM还成立吗?请说明理由.26.(12分)(2015秋•重庆校级月考)二次函数y=﹣﹣3x+8的图象与x轴交于A、B两点(点A在B的左侧),与y轴交于点C,此抛物线的顶点为点D,对称轴交x轴于点E,如图①.(1)求AC的解析式和抛物线的顶点D的坐标.(2)点F是抛物线上直线AC上方的一点,求:当△ACF的面积最大时,点F的坐标,并求出△ACF的最大面积.(3)如图②,点H的坐标是(0,6)连接EH和BH,将△EBH沿直线EH翻折,点B的对应点为点G,作直线CG,在直线CG上是否存在一点M,使得△EHM是直角三角形?若存在,直接写出点M的坐标,若不存在,请说明理由.2015-2016学年重庆实验外国语学校九年级(上)第一次月考数学试卷参考答案一、选择题:(本大题共12个小题,每小题4分,共48分)在每个小题的下面,都给出了代号为A、B、C、D的四个答案,其中只有一个是正确的,请将正确答案填在对应的表格中.1.B;2.A;3.C;4.B;5.A;6.C;7.B;8.C;9.C;10.A;11.C;12.A;二、填空题:(本题共6小题,每小题4分,共24分)请把下列各题的正确答案填写在对应的横线上.13.-2;14.x<;15.-1<x<3;16.y=2(x-4)2-8;17.;18.6;三、解答题:解答时每小题必须给出必要的演算过程或推理步骤.19.;20.120;21.;22.;23.;24.;25.;26.;。
2015-2016学年第一学期九年级英语第一次月考试题
2015-2016第一学期第一次月考九年级英语试题(考试时间:120分钟满分:150分)第一部分听力测试(共30小题;每小题1分,满分30分)Ⅰ. 听句子, 选出与句子意思相符的图片。
每个句子读两遍。
A B C D E1._____________2. _____________3. _____________4. _____________5. _____________Ⅱ. 听对话,选答案。
听下面10段对话,每段对话后有一个或两个小题,从题中所给的A、B、C 三个选项中选出最佳选项。
每段对话读两遍。
听第一段对话,回答第6小题。
6. How’s the weather?A. Rainy.B. Windy.C. Cloudy.听第二段对话,回答第7小题。
7. What will Jane do this weekend?A. Go hiking.B. Go cycling.C. Go fishing.听第三段对话,回答第8小题。
8. What’s Mike’s mother?A. A doctor.B. A driver.C. A worker.页脚内容1听第四段对话,回答第9小题。
9. When is the woman’s birthday?A. May 1.B. July 1.C. August 1.听第五段对话,回答第10小题。
10. What does the woman like to drink?A. Water.B. Coffee.C. Tea.听第六段对话,回答第11、12小题。
11. What color is the coat?A. White.B. Black.C. Green.12. How much is the coat?A. 300 yuan.B. 330 yuan.C. 360 yuan.听第七段对话,回答第13、14小题。
13. Where does the woman want to go?A. To the hospital.B. To the post office.C. To the Children’s Park.14. How far is it?A. 3 kilometers.B. 4 kilometers.C. 5 kilometers.听第八段对话,回答第15、16小题。
重庆第二外国语学校初2015级九上第一学月考试试题答题卡
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二、填空题: (每小题 4 分,共 24 分)
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重庆二外初 2015 级 9 上质量检测(一)
1.答题前,考生先将自己的姓名、准考证号填写清楚,并认真核准条形码上的准 考证号、姓名及科目,在规定的位置贴好条形码。 2.第 1-12 题必须使用 2B 铅笔填涂;第 13-26 题必须使用 0.5 毫米的黑色签字 笔书写,字体工整、笔迹清楚。 3.答题必须使用黑色碳素笔书写,字体工整、笔迹清楚,按照题号顺序在各题的 答题区内作答,超出答题区域的答案无效,在草稿纸上、试卷上答题无效。 4.保持卡面清洁,不要折叠、不要弄皱,禁用涂改液,涂改胶条。
2015年九年级英语第一次月考试卷
2016级第一次月考试卷 英语本试卷分为第Ⅰ卷和第Ⅱ卷两部分。
第Ⅰ卷1至5页,第Ⅱ卷6至10页。
考试时间120分钟,满分120分。
第Ⅰ卷(选择题,共75分)第一部分:听力(共两节;满分20分)第一节(共5小题;每小题1分,满分5分)听小对话,请从A 、B 、C 三个选项中选择符合对话内容的图片。
( )1.How does the man learn English?A B C( )2.What food does Linda like best? A B C( )3.Which sign are they talking about?( )4.What does Tom give Jenny on her birthday?( )5.What does the woman want to buy?A B C第二节:(共15小题;每小题1分,满分15分)听下面十段对话或独白,每段对话或独白后有一个小题,从题中所给的三个选项中选出能回答所给问题的最佳一项,每段对话或独白读两遍。
( )6.When will Tim have the test?A.On Saturday morning.B.On Sunday afternoon.C. On Friday morning.( )7.How does the man learn English?A.By reading aloud.B.By making flashcards.C.By listening to tapes.( )8.Which might be the reason why Victor failed the driver ’s test?A.He was too nervous.B.He didn ’t practice at all.C. He didn ’t have enough time to practice.( )’s Tom good at?A. ChineseB. MathC. English( )10.What will the woman borrow?A .A book. B.A dictionary C.A computerA BC A B C()11.What is Julia going to do?A. Go campingB. Do homeworkC. Do housework()12.What will the woman do?A. She will do some housework.B. She will change her clothes.C. She will go to a party.()13.Why is the girl late?A. Because she had to do her homework at home.B. Because she visited her grandma this morning.C. Because she had to stay with her grandma at home.()14.What does the woman mean?A. The man phoned the dentist earlier before that.B. The man may not see the dentist right now.C. She is sorry that she is too busy to help him.()15.How many chairs are there in Betty’s classroom?听短文,回答16—20小题。
重庆市2015初三下学期第一次月考英语试题及答案
2014-2015学年度(下)第一学月九年级英语模拟试题(考试时间100分钟总分150分)听力部分(30分)第一节(每小题1.5分,共9分)听一遍,根据你所听到的句子,从A、B、C三个选项中选出最恰当的答语。
()1.A. I’m 8 B. 8:00 C. I have no time . ()2.A. OK,I will . B.No,you can’t C.Of course not()3.A. Please don’t B. I’m really sorry. C. Don’t mention it ()4.A.To Hong Kong B. I don’t think so C. Have a good trip ()5.A.February B. Sunday C. Winter()6.A. It’s very bot B. It’s very tiring C. I like it very much 第二节(每小题1.5分,共9分)听一遍,根据你所听到的对话和问题,从A、B、C三个选项中选出正确答案。
()7.A. Playing football . B. Playing tennis. C. Playing basketball ()8.A. 8:30 a .m B. 9:00 a .m. C.9:30 a .m.()9. A. A cat. B. A mouse. C. A dog.()10. A. Sunny. B. Rainy . C. Cloudy .()11. A. His cousins . B. His friends . C. His classmates. ()12.A. A waitress. B. A driver . C. A teacher .第三节(每小题1.5分,共6分)听两遍。
根据你所听到的长对对话,从A、B、C三个选项中选出正确答案。
听下面一段材料,回答第13和14小题。
2015-2016学年度九年级英语上第一次月考试卷有答案AwPqMH
2015--2016年九年级第一次月考试卷英语第一部分英语知识运用(共三节,满分40分)一.根据首字母填入一个适当的词,使句子意思完整,语法正确。
(12分)1.I don’t know how to i my reading speed.2.Whether or not you can learn English well d on your learning habits.3.K comes from questioning.4.You’d better take n in class and review them after class.5.Please drive at a s of forty miles an hour.6.I often make m in grammar.7.—I didn’t catch what you said. Would you r your e-mail address?—OK. It’s andy19840313@.8. --- What do you often do during the Spring Festival?--- I often visit my r and friends.9. --- Hi, Wang Mei. Here's your letter. The s on it is very great. Can you give it to me?10. Do you know to w Mary is writing?11. Sorry, your answer to the question is not c . It’s wrong.12. It’s really c____________ to live in downtown, you can buy everything you need easily.二.用括号内所给单词的适当形式填空。
2014-2015学年第二学期九年级英语第一次月考试卷
2014-2015 学年第二学期九年级英语第一次月考试卷第一部分听力(共20小题;每题1分,满分20分)(一)听句子,选择适合的应答语。
每个句子读两遍。
1. A. Well done! B.I hope so. C.That ’s all right.2. A. Yes, I do. B.I like winter best. C. Yes, I like winter.3. A. No, she isn ’ t. B. Yes, she is. C. No, she doesn’ t.4. A. It ’s the 17th of April. B. It ’s Thursday. C.It ’s onthe 17th of April5. A. Yes, he does. B. Yes, he was. C. Yes ,he is.(二)听五段对话,选择正确答案。
每段对话读两遍.6. Whom does Wu Dong speak to?A. To his fatherB. To his classmateC. To his teacher7 . How old is your teacher?A. Twenty-four years old B .Twenty-nine years old C .Twenty-eight years old8.W hy did Jane get up early this morning?A.Because she wanted to go on a holiday.B.Because she was illC. Because she didn't like to stay in bed.9. What will the two speakers do?A. Go to the cinemaB. Listen to the radioC. Get new glasses10.What are they talking abouA. They are talking about how to learn better.B.They are talking about how to become healthier.C.They are talking about how to be clever(三) 听一组对话和五个问题,听对话回答以下问题。
2015届四川重庆万州第二高级中学九年级上第一次月考英语试卷
考查范围:词义辨析—暂存、语法知识、语篇范围、词汇知识、情景交际一、单选题1. Lucy thinks that English movies isn’t a good way to learn English.A.watches B.watchC.watched D.watching2. When we practice English speaking, we often end up in Chinese.A.speak B.speakingC.to speak D.spoken3. That poor man has for three years.A.died B.been diedC.dead D.been dead4. it was yesterday because of the storm!A.What a bad weather B.What bad weatherC.How bad a weather D.How bad weather5. Mom! Would you mind me table tennis?A.play B.playingC.to play D.played6. --How do you study a test?--- I study working with a group.A.for, by B.by, inC.for, in D.by, in7. If you don’t know the meaning of new words, look them in a dictionary.A.up B.in C.with D.for8. --- Cindy, I don’t have a partner to practice . Would you like to be my partner?--- Sure. Let’s do it together.A.speak English B.speaking EnglishC.speak English with D.speaking English with9. We got to hear the news just now.A.excited, excited B.exciting, excitingC.excited, exciting D.exciting. Excited10. I’m not sure if I’m going to Tim’s party; I may go to the concert .A.only B.instead C.early D.late11. --- I will go to Harbin for my summer vacation. What about you?--- I haven’t decided where .A.go B.I went C.going D.to go12. Tom, you have ____________ so many ____________. Be careful next time!A.made; mistakes B.made; mistakeC.done; mistakes D.do; mistake13. --- Susan, why don’t you an English club to practice your spoken English?--- That a good idea.A.take, sound like B.join, soundsC.join, sounds like D.take, sound14. It’s so noisy here that I can’t hear_______. Could you please say it again?A.what you say B.what do you sayC.what you said D.what did you say15. My mother has already out the table for dinner.A.lay B.lain C.laid D.layed16. Kids as ghosts or black cats on Halloween.A.dress B.get dressedC.dressed D.dress up17. I don’t know if he tomorrow. If he , I’ll let you know.A.comes, will come B.will come, comesC.will come, will come D.comes, comes18. Huaxing Clothes Street is a good place .A.hang out B.hanging outC.to hang out D.hung out19. He is to people. He always speaks to them .A.polite, politely B.politely, politeC.impolite, politely D.politely, impolite20. Could you tell me a meeting in Guangzhou next week?A.if there was going to be B.if there is going to beC.whether is there going to be D.whether there is going to have二、完型填空21. Once there was a businessman. Every day he worked too much. So later he found he could not sleep at night but kept on going to sleep in the day. He be came so____that he went to see his doctor.“ Can you help me, doctor?” he asked. “ I slept very____before. But recently I haven’t been able to sleep for____than two hours a night.” The doctor exami ned him____At last he gave the businessman some medicine and told him to work less hard, then he would soon be____But the businessman grew worse and worse. He slept even less than before at night and was always falling asleep in his____He visited his doctors very____ , it took the doctor a long time to____the reason: the businessman’s wife gave him the____medicine. She was giving him the____medicine in the morning a nd the ones to keep him awake at night.【小题1】A.tired B.interested C.worried D.excited【小题2】A.worse B.badly C.better D.well【小题3】A.little B.more C.less D.much【小题4】A.carefully B.angrily C.quickly D.happily【小题5】A.well B.better C.best D.good【小题6】A.bedroom B.workroom C.office D.classroom【小题7】A.early B.free C.late D.often【小题8】A.see B.find C.look for D.think【小题9】A.right B.good C.wrong D.best【小题10】A.sleeps B.sleeping C.sleep D.slept三、阅读单选22. Mr and Mrs Smith had always spent their summer holidays in New Jersey ( 新泽西) in the past, staying in a small inn(旅店)at the foot of the hill. One year, however, Mr Smith made a lot of money in his business, so they decided to go to London and stay at a really good hotel while they went touring a round the famous city.They flew to London and arrived at their hotel late one evening. They had expected that they would have to go to bed hungry, because in that small inn in N ew Jersey, no meals were served after seven. They were surprised when the waiter asked whether they would take dinner there that night. “ Are you still serv ing dinner?” asked Mr Smith. “ Yes, certainly, sir,” answered the waiter. “ We serve it until half past nine.”“ What are the time of the meals then?” asked Mr Smith. “ Well, sir, We serve breakfast from seven to half past eleven in the morning, lunch from twelve to three in the afternoon, tea from four to five, and dinner from six to half past nine.” answered the waiter.“ But that hardly leaves any time for us to see the sights of London.” said Mr Smith.【小题1】Mr and Mrs Smith always spent their holidays in before they made a lot of money.A. New YorkB. LondonC. New JerseyD. Washington【小题2】They went to London by .A. seaB. planeC. trainD. bus【小题3】From the story we know that this was the time for Mr and Mrs Smith to go to London.A. firstB. secondC. thirdD. fourth23. Mr and Mrs Green married thirty years ago and they have lived in the same house since then. Mr Green goes to work at eight every morning from Mond ay to Friday and Mrs Green does the housework everyday. Both of them enjoy their work very much.There are quite a lot of houses in their street, and most of their neighbors are kind and friendly. One day, the old lady in the house opposite them died and, af ter a few weeks, a young man and a young woman came to live in it.Mrs Green watched them for a few days from her window. One day when her husband came back from work, she said to him, “Bill, the man in that house o pposite us always kisses his wife when he leaves in the morning and kisses her again when he comes home in the evening. Why don’t you do that, too?”Mr Green thought for a while and answered, “ Well, I don’t know her very well yet.” From then on, Mrs Green never mentioned it again.【小题1】After they got married, Mr and Mrs Green .A.have never kissed each otherB.have moved from one place to anotherC.have stayed in the same house for 30 yearsD.have had no children yet【小题2】Mrs Green hoped that .A.Mr Green would kiss the young womanB.Mr Green would kiss herC.her husban d would make a lot of moneyD.she would live in the opposite house【小题3】From the passage, we can see that Bill is .A.the young man B.Mr GreenC.the young woman D.Mr Green’s son24. What’s the most important thing for you to have in your life? Somebody mentions hard-work; others suggest knowledge, love and luck.If you arrange the 26 English letters alphabetically(按字母表顺序)and use the numbers to represent each of them, for example, 1 for a, 2 for b, 3 for c..., y ou can change an English word into a number. So hard-work become 8+1+18+4+23+15+18+11="98," meaning 98 is its mark; knowledge : 11+14+15+23+1 2+5+4+7+5="96," while love: 12+15+22+5=54,and luck: 12+21+3+11="47," a small mark. None of these words can give one a full mark. What about mo ney or prayer(祈祷)? They can’t, either.Then what else? Don’t be worried. You can always find an answer to a problem in your life, when you change your way of looking at things or doing things, or your attitude(态度). Yes, the attitude is the word. See for yourselves: attitude: 1+20+20+9+20+21+4+5="100," a full mark.Different attitudes lead to different courses of life. Most time people hope for a better life. It is possible that one will have a change for the better after one h as changed one’s attitude.When you change your manner and become friendly towards others, you’ll meet more smiling faces towards you. In the same way, if you take a positive(积极的) attitude towards failure(失败), you’ll find it’s also rewarding though it has caused you losses.【小题1】According to this passage, the gets the full mark.A.Hard-work B.KnowledgeC.Money D.Attitude【小题2】According to this passage, which gets the more mark?A.Prayer B.Luck C.Money D.love【小题3】From this passage we can learn that .A.different attitudes come from different course of lifeB.math can solve every problem easily in our daily lifeC.failure sometimes bring you good if you take positive attitudeD.none of the English words except “attitude” is 100 0r more【小题4】In the writer’s opinion, if you meet with problems, the best way out is to .A.Ask for help from othersB.Say your prayers to GodC.Change your attitudeD.Try maths-solving ways25. Maybe you have seen this in schools: some students are studying hard all the time but they just pass their exams, while some others may spend much les s time on their books but do much better in exams. How could this happen? People used to think that hard-work is the only way to success. But now they ha ve understood that smart work can make them succeed, too.Hard workers don’t mind working for long hours, while smart workers always think of several different answers to these questions, “ Why should I suffer (忍受) this? Isn’t there s better way to do this?” Thanks to these people, we can use computers instead of the abacus(算盘) now. Progress in every field(领域) is the direct result of “ try a better way” by smart workers.There was a large soap factory in Japan. Once it received an unusual letter, complaining(抱怨) that there was no soap in the soapbox he bought. How could empty soapboxes go out of the factory? The engineers (工程师) checked the producing and packing(包装). The producing was fine, but in about one in ten t housand cases, the packing machine let an empty soapbox go. There was no need to spend a lot of money repairing the machine for such a small problem. T he engineer soon work out a solution. He put a huge X-ray machine and two large computers to find out the empty soapboxes. After teaching the worker ho w to use it, he sat down in his seat, exhausted(筋疲力尽的).“ Sir, we could have solved the problem in a much easier and cheaper way.” said one worker. “ Really? How?” “ We can put a huge fan(风扇) near the packi ng machine. The wind will____the empty boxes. There would be no need for an X-ray machine and computers.”See, this is smart work. In order to succeed, we should not work hard like the engineer, but also think smartly like this worker.【小题1】Some students spend much less time on the schoolwork but do much better in exams .A.Because of their hard workB.Because of different educationC.Because they try to find a better wayD.Because they study for a much longer time【小题2】Someone wrote the soap factory and complained that .A.the soapbox he bought was emptyB.their soap was too expensiveC.the soap he bought was terribleD.their service was very bad【小题3】The soap factory could only near the packing machine to solve the problem in a much easier and cheaper way.A.set some soapboxesB.set an X-ray machineC.put two large computersD.put a huge fan【小题4】The phrase “ blow away” here in Chinese means?A.停止B.吹走C.搬动D.逃脱【小题5】The article mainly tell us that we should in order to succeed.A.think of different answers to our questionsB.spend much less time on our school workC.work hard like the engineer and think smartly like the workerD.spend enough money repairing the machine for any problem四、回答问题26. Some people do not seem to have a mind of their own. They never express their own ideas and they do not decide to do what to do themselves. My broth er is one of these people. Last night, for example, he was going to read at home. At about seven thirty, his friend Tom came in, “Let’s watch TV.” “OK.” my brother answered. By ten o’clock my brother was tired and sleepy, and he wanted to go to bed. But Tom said, “ Let’s go out and get something to eat.” “ Go od.” my brother answered. He often says things he does not mean and does thing he really does not want to. Worse than that, he does not say the things he w ould like to say or do a lot of things he would like to do.【小题1】When did Tom come?【小题2】What does the writer think of his brother?【小题3】Does the writer’s brother do a lot of things he would like to do?五、句型转换27.【小题1】I believe that the Chinese Spring Festival is interesting and important in China.(变否定句)I ________ believe that the Chinese Spring Festival ________ interesting and important in China.【小题2】She improves her spoken Englishby having conversations with friends.(就划线部分提问)________ ________ she improve her spoken English?【小题3】“ Do you have any rooms to rent?” she asked me.(合并句子)She asked me I any rooms to rent.【小题4】你应该注意你的发音。
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四川外语学院 重庆第二外国语学校
2015—2016学年度(下期)第一学月考试
初2016级 数学试卷
(全卷共五个大题,共26个小题;满分150分,考试时间120分钟)
参 考 公 式:抛 物 线 2
(0)y ax bx c a =++≠的 顶 点 坐 标 为 2
4(,)24b ac b a a
--, 对 称 轴 公 式 为 2b
x a
=-
. 一、选择题:(本大题12个小题,每小题4分,共48分)在每个小题的下面,都给出了代号为A 、B 、C 、D 的四个答案,其中只有一个是正确的,请将答题卡上题号右侧正确答案所对应的方框涂黑(或将正确答案的代号填人答题卷中对应的表格内). 1.在3,﹣2,0,﹣5这四个数中,最小的数是( ) A .﹣5 B .﹣2 C .3 D .0
2.下列几个图形是国际通用的交通标志,其中不.是中心对称图形的是( )
3.计算(m 2n )2的结果是( )
A .2 m 2n
B .m 4n
C .m 4n 2
D .m 2n 2 4.如图,A 、B 、C 是⊙O 上的三点,已知︒=∠60O , 则=∠C ( ) A .︒20 B .︒30 C .︒25 D .︒45
5.分式方程
x
x 3
21=-的解是( ) A .3- B . 2 C .3 D .2- 6.在Rt △ABC 中,∠C=90°,若AC=2BC ,则tan A 的值是( ) A .
1
2
B .2 C
D
7.下列调查中,适宜采用全面调查(普查)方式的是( ) A .调查全国青少年儿童的睡眠时间 B .调查本班50名同学的身高情况
4题图
!
A B C D
C .调查我市居民的年人均消费
D .调查某日光灯管厂一批灯管的使用寿命 8.将一副三角板如图放置,使点A 在D
E 上, BC ∥DE ,则∠AFC 的度数为( ) A .45° B .50° C .60° D .75°
9.已知关于x 的方程4132=--)(x m 的解是m x -=,则m 的值是( )
A .7-
B .7
C .5
7-
D .
5
7 10.小蕾今天到学校参加考试,从家里出发走10分钟到离家500米的地方吃早餐,吃早餐用了20分钟,再用10分钟赶到离家1000米的学校参加考试.这一过程中,能反映小蕾离家的距离y (米)与时间x (分钟)的函数关系的大致图象是( )
11.用棋子摆出下列一组“口”字,按照这种方法摆下去,则摆第13个“口”字需用棋子( )
A .48枚
B .44枚
C .52枚
D . 56枚
12..在– 3、– 2、– 1、0、1、2这六个数中,随机取出一个数记为a ,那么使得关于x 的一元二次
方程2250x ax -+=无解,且使得关于x 的方程1
311x a x x
+-=
--有整数解的所有a 的值之和为( ). A .1- B .0 C .1 D .2
二、填空题:(本大题6个小题,每小题4分,共24分)请将每小题的答案直接填在答题卡(卷)
中对应的横线上.
13.去年我国民生产总值约为520000亿元,那么这个数据用科学记数法表示为____________亿元. 14.若两个相似三角形的面积之比为1∶16,则它们的周长之比为__________.
15. 某班体育委员记录了第一小组七位同学定点投篮(每人投10个)的情况,投进篮框的个数为6
,
第2个“口” 第1个“口” 第3个“口” ………………
D
8题图
10,5,3,4,8,4,这组数据的极差是___________.
16.已知圆锥的高为 8cm ,底面圆的直径为 12cm , 则该圆锥的侧面积为_________cm 2 .(结果保
留π )
15.将13根火柴棍分成三堆(火柴棍保持完整,不能折断). 如果分成的三堆火柴棍数分别相同算
作同一种分法(如:2,5,6和6,2,5),那么分成的三堆火柴棍中任取两堆刚好能摆成一个正方形的概率是 .
16.某次象棋比赛有奇数个选手参加,每位选手都与其他选手比赛一盘,记分原则是:胜一盘得2
分,和一盘各得1分,负一盘得0分,已知其中2名选手共得16分 ,其他选手的平均分数为整数,则此次比赛的选手个数是 人.
三、解答题:(本大题2个小题,每小题7分,共14分)解答时每小题必须给出必要的演算过程或
推理步骤,请将解答书写在答题卡(卷)中对应的位置上. 19.︒+-+--+---3012
1
342720133
3sin )()
()(π
20.如图,A 、C 、F 、B 在同一直线上,AC=BF ,AE=BD ,且AE ∥BD .
求证:EF ∥CD .
四、解答题:(本大题4个小题,每小题10分,共40分)解答时每小题必须给出必要的演算过程或推理步骤,请将解答书写在答题卡(卷)中对应的位置上.
21.先化简,再求值:221443
(1)21
x x x x x x x -+-÷+-+--,其中x 是不等式
2513x x -<-
的最小整数解.
22.重庆某轻轨工程指挥部,要对某轻轨路段工程进行招标,接到了甲、乙两个工程队的投标书.根据投标书所知,甲队单独完成这项工程所需天数是乙队单独完成这项工程所需天数的;若由甲队先做20天,剩下的工程再由甲、乙两队合作60天完成. (1)求甲、乙两队单独完成这项工程各需多少天?
(2)已知甲队每天的施工费用为9.2万元,乙队每天的施工费用为6.8万元.工程预算的施工费用为1000万元.若在甲、乙工程队工作效率不变的情况下使施工时间最短,那么预算的施工费用是否够用?若不够用,需追加预算多少万元?
23.第十二届全国人大代表选举的基本原则是:城乡同比选举,实现人人平等、地区平等、民族平
等.据新华网2月28日公布,全国5个少数民族自治区的人大代表如下: (1)这五个地区代
表人数的中位数是
____________.
(2)全国4个直辖市及港、澳、台 地区的代表人数的平均数是
55.8 人 ,请补全折线统计图 (作图要求用签字笔).
(3)3月17日,第十二届全国人大代表第一次会
议闭幕后,五个少数民族自治区各派一名代
表参加四个直辖市及港澳台代表团的交流
活动,重庆代表团将从中选取两名代表参加
活动.请你用列表法或画树状图的方法,求
出所选代表恰好同时是广西代表和宁夏代 表的概率.
24.如图,在矩形ABCD 中,点M 、N 在线段AD 上,60MBC NCB ∠=∠=︒,点E 、F 分别为线
段CN 、BC 上的点,连接EF 并延长,交MB 的延长线于点G ,EF=FG. (1)点K 为线BM 的中点,.若线段AK=2,MN=3,求矩形ABCD 的面积; (2)求证:MB=NE+BG .
5961四个直辖市及港澳台代表人数折线统计图
港
澳台北京天津上海重庆人数(人)
地区6560
55
50
45
40
25. 某公司研制出一种新型科技产品,每件产品的成本为2400元.在该产品的试销期间,为促销,公司决定:商家一次购买这种新型产品不超过10 件时,每件按3000元销售;若一次购买该种产品超过10件时,每多购买一件,所购买的全部产品的销售单价均降低10元,但销售单价均不低于2600元;且商家一次性购买该产品不能超过60件. (1)商家一次购买这种产品多少件时,销售单价恰好为2600元?
(2)设商家一次购买这种产品x 件,开发公司所获的利润为y 元.在公司规定范围内,商家购买多少件时,公司可获得最大利润?最大利润是多少?
(3)某商家一次购买这种产品a 件,以每件3200元的价格全部售出,共获利24750元(不计其它成本),请求出产品件数a 的值.
26. 如图,在Rt△ABC 中,∠C=90°,AC=8,BC=6,点D 在AB 上,AD=2,点E 、F 同时从点D 出发,
分别沿DA 、DB 以每秒1个单位长度的速度向点A 、B 匀速运动,点E 到达点A 后立刻以原速度沿AB 向点B 运动,点F 运动到点B 时停止,点E 也随之停止.在点E 、F 运动过程中,以EF 为边作正方形EFGH ,使它与△ABC 在线段AB 的同侧.设E 、F 运动的时间为t 秒,正方形EFGH 与△ABC 重叠部分面积为S .
(1)当t 为何值时,正方形EFGH 的顶点G 刚好落在线段AC 上;
(2)当02t <≤时,求出s 与t 的函数关系式,并写出t 的取值范围;
(3)当2t ≥时,是否存在t 的值,使EGB ∆为等腰三角形,若存在,求出所有满足条件的t 的值;
若不存在,请说明理由.
C
备用图
备用图
备用图。