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篇一:2016重庆中考英语试题A卷及答案

重庆市2016年初中毕业暨高中招生考试

英语试题(A卷)

(全卷共九个大题,满分150分 考试时间:120分钟)

第I卷(共100分)

I. 听力测试。(共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,并把答题卡上对应题目的答案标号涂黑。

1. A. Good morning! B. Good afternoon! C. Good evening!

2. A. It‘s 8:10. B. It‘s June 14th. C. It‘s a fine day.

3. A. Excuse me. B. That‘s OK. C. Thank you.

4. A. No, I‘m not. B. Sorry, I won‘t. C. Don‘t mention it.

5. A. See you. B. Please don‘t. C. That‘s right.

6. A. Yes, please. B. Sure, I‘d love to. C. You‘re welcome.

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,并把答题卡上对应题目的答案标号涂黑。

7. A. A Windy. B. Snowy. C. Sunny.

8. A. At seven. B. At eight. C. At nine.

9. A. Kate. B. Jeff. C. Tony.

10. A. Noisy. B. Soft. C. Quiet.

11. A. Meat. B. Fruit. C. Vegetables.

12. A. By bus. B. By bike. D. On foot.

第三节(每小题1.5分,共6分)

听两遍。根据你所听到的长对话,从A、B、C三个选项中选出正确答案,并把答题卡上对应题目的答案标号涂黑。

听下面一段材料,回答第13和14小题。

13. Where are the speakers?

A. At home. B. In a hotel.

14. What would the man like to do?

A. To take photos. B. To buy a gift.

听下面一段材料,回答第15和16小题。 C. In a store. C. To talk with friends.

15. What is on show in the library?

A. Chinese stamps. B. British movies. C. Science books.

16. When do Betty want to go to the library?

A. On Sunday morning. B. On Sunday afternoon. C. On Saturday afternoon.

第四节(每小题1.5分,共6分)

听两遍。根据你所听到的短文内容,从A、B、C三个选项中选出正确答案,并把答题卡上对应题目的答案标号涂黑。

17. Mrs. Smith lost her son when she was _________.

A. doing some shopping B. calling the office C. taking a walk

18. The boy is thin and has a round face with _____ hair.

A. brown B. black C. yellow

19. There is a picture of Mickey Mouse on the boy‘s _________.

A. history B. Chinese C. math

20. If you see the boy, you can call Mrs. Smith at

A. 109-6321 B. 321-6091 C. 632-1091

II. 单项选择。(每小题1分,共20分)

从A、B、C、D四个选项中选出可以填入空白处的最佳答案,并把答题卡上对应题目的答案标号涂黑。

21. Mary wants to be _____ good doctor when she grows up.

A. a B. an C. the D./

22. Our reading club share ideas with each other _____ one hour every Tuesday.

A. to B. on C. at D. for

23. —Do you like watching ping-pong matches?

— Yes, and _____ favorite ping-pong player is Ma Long.

A. we B. us C. our

24. I _____ the History Museum twice. I‘ve learned a lot there.

A. visit B. am visiting C. have visited

25. —It‘s hot today. Have some __________, please.

— No, thanks. I‘m not thirsty at all. D. ours D. will visit

A. water B. potatoes C. bread D. cakes

26. You should ask Bob _____ his own clothes. He is ten years old now.

A. wash B. washes C. washing D. to wash

27. It‘s sports time. Most _____students in Class 1 are playing football on the playground.

A. boy B. boys C. boy‘s D. boys‘s

28. —Must we finish the work today?

— _____________. We have something else to do tomorrow.

A. Yes, we can B. No, we can‘t C. Yes, we must D. No, we needn‘t

29. Students do less homework now. Usually it ________before 9 o‘clock in the evening.

A. finishes B. finished C. is finished D. was finished

30. Meimei is going to be older sister. Her parents are planning to have their _____ child.

A.one B. two C. first D. second

31. It was late. She opened the door _______because she didn‘t want to wake up her grandma.

A. angrily B. quietly C. loudly D. heavily

32. Chen Wei isn‘t at school today _____ he is taking a robot competition in Shanghai.

A. so B. because C. before D. if

33. —I‘m sorry. I broke your tea cup.

—_________. I have another one at home.

A. It doesn‘t matter B. You‘d better not C. My pleasure D. It‘s too bad

34. When spring comes, trees begin to _____ green.

A. sound B. taste C. keep D. turn

35. A true friend will never _________ from you when you‘re in trouble.

A. take away B. run away C. put off D. get off

36. —I think it‘s necessary to learn how to work in groups.

— I quite agree. Sometimes it‘s even _____ than grades.

A. less important B. more important

C. the least important D. the most important

37. –You play the piano so well. ________ do you take piano lessons?

— I go to piano lessons twice a week.

A. How long B. How many C. How often D. How much

38. Don‘t worry. Bill will help you look after your dog when you _____ away on business.

A. are B. were C. will be D. have been

39. —Do you know __________?

— Let me see. I remember it was on March 18th.

A. why did they move here B. why they moved here

C. when did they move here D. when they moved here

40. –Mrs. Black, I‘m afraid that I‘ll fail the exam.

–_____, dear! Take it easy. I‘m sure you‘ll pass it.

A. Sorry to hear that. B. Come on. C. All right. D. Good job.

III.完型填空。(每小题1.5分,共15分)

根据短文内容,从A、B、C、D四个选项中选 出一个能填入相应空格内的最佳答案,并把答题卡上对应题目的答案标号涂黑。

There is an old saying: ―Take the time to stop and smell the flowers.‖ I think we should also take the flowers.

My grandmother knew just to do that. She grew flowers with earth, water and love, so her back garden was filled with beautiful flowers. She would smile when she saw the shine down on them. In her front garden she planted flowers, You could see red white, and yellow flowers in it. My mom and I used to walk them and enjoy their smells. Beautiful butterflies (蝴蝶) flew down on them. Grandma also cared for the wild flowers. She would send and my brother out to pick flowers and would then turn them into delicious wine (酒).

Grandma not only planted flowers in the garden also planted flowers in our heart. Her delicious dinners made with love encouraged us. Her sweet smile always made us . Her hugs (拥抱) and kisses were the sunshine that kept our own love day after day.

Take the time to plant a few flowers yourself today. Show your smiles, kindness and love. Plant your wishes, talents and pleasure. Make this brighter and brighter with your sunshine.

41. A. plant B. water C. buy D. sell

42. A. who B. when C. how D. where

43. A. star B. sun C. rain D. wind

44. A. too B. either C. then D. though

45. A. at B. on C. with D. around

46. A. me B. you C. him D. her

47. A. and B. so C. but D. or

48. A. happy B. hungry C. tired D. angry

49. A. sleeping B. growing C. standing D. losing

50. A. house B. town C. city D. world

IV. 阅读理解。(每小题2分,共30分)

阅读下列材料,从A、B、C、D四个选项中选出最佳答案,并把答题卡上对应题目的答案标号

涂黑。

A

Paper cut can be seen in many parts of China during the Spring Festival. People put it on windows, doors and walls for the festival.

A thousand years ago, paper cut was used for decoration (装饰). In Tang Dynasty women used paper cut as headdress. In Song Dynasty, it helped make gifts more beautiful. What‘s more, people would feel happier when saw paper cut on windows, doors and walls. Now people use paper cut to express their wishes for welcoming the New Year.

There are different kinds of paper cut in different parts of China. Pictures usually cover nearly all things, from flowers, birds to the famous people. Now, there are factories for paper cut in China. Paper cut has changed from decoration to a kind of art. At the same time, paper cut also appears in cartoons, magazines or TV programs.

51. ________ people like to use paper cut for their festivals.

A. Australian B. Chinese C. English D. american

52. In Song Dynasty, paper cut helped to make gifts more _____.

A. beautiful B. famous C. different D. expensive

53.This passage is mainly about _____.

A. cartoons B. TV programs C. paper cut D. hair cut

B

Don‘t do your homework alone when you find it difficult! TFK‘s Homework Helper has many useful tools with tips to help you do your homework better.

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show you how to write eight different kings of school papers. Get Started!

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Do you know the state capitals? Check yourself with TFK‘s flash cards (抽认卡), or

make you own flash cards to study for your next exam. Get started.

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How do you write a good article to introduce yourself? Find answers to all of your

writing questions here. Get Started!

Grammar Talent

Do you know how to use commas (逗号)? Are you s talent when it comes to big

letters? Go over grammar rules, and then test yourself with Grammar Talent, Get

Started!

Writer’s Toolbox

Whether you need a dictionary or an electronic (电子的) machine which can

change one language into another, we‘ve got you covered here. Get Started!

54. According to this ad, you can use TFK to ____________.

A. play gamesB. watch TV

C. draw pictures better D. do homework better

55. ________of TFK may help you get the state capitals.

A. Writer‘s Toolbox B. Flash-card Maker

C. Grammar Talent D. A+Papers

56. With the help of Writing Suggestions, you can _____.

A. change one language into another B. look up some new words

C. write a good article to introduce yourself D. go over all grammar rules

57. In this ad,_________ tools of TFK are introduced.

A. three B. four C. five D. six

C

When talking about picking a right school, a mother and teacher gave some pieces of advice.

In the latest issue(期)of Youth magazine, the mother shared the school advice she gave her daughters with young people across the country.

―I‘ve told my daughters many times that I don‘t want them to choose a name,‖ the mother said. ―I don‘t want them to think, ?Oh, I should go to these top schools.‘ We live in a country with hundreds of excellent universities. So the first question is : what‘s going to work for me?‖

―When it was time to prepare for picking schools, nobody around me believed I could get into Xiamen University. But through hard work I finally made it,‖ she continued. ―So my second piece of advice is : believe in yourself, no matter what other people might say. Once your goal is set, you only need to try your best to make it come true.‖

―The last piece of advice is not to be worried even if your dreams don‘t come true. As I‘ve said above, there are so many good universities out there. So it‘s important for everybody to understand that you can always find a university that gives you a great education.‖

58. The mother shared her advice _________.

A. with her students B. with her husband

C. in Youth magazine D. in Xiamen University

59. To explain her second piece of advice, the mother gave _____________.

A. a story of her daughters B. a story of her own

C. some different reasons D. some different ideas

60. We can learn from the last paragraph (自然段) that _____________.

A. we can realize our dream through hard work.

B. the name of the university isn‘t the most important.

C. it‘s not necessary to care that other people might say.

D. more than one university can give us a good education.

61. The best title of the passage may be ―____________‖.

A. Colorful University Life B. Best School Education

C. A Report on University Building D. Advice on School Picking

D

Many of you have heard a Cinderella (灰姑娘) story, but you may not know that there are over a hundred different ways to tell the Cinderella story. When writers tell the same story in a different way, it is called their ―version ‖ of the story. The story of Cinderella has many different versions. Let‘s read tow of

篇二:2016年重庆市中考数学试卷(A卷)(含答案)

2016年重庆市中考数学试卷(A卷)

一、选择题(本题共12个小题,每小题4分,共48分)

1.(4分)(2016?重庆)在实数﹣2,2,0,﹣1中,最小的数是( )

A.﹣2 B.2 C.0 D.﹣1

2.(4分)(2016?重庆)下列图形中是轴对称图形的是( )

A. B.

3 C.2 D. 3.(4分)(2016?重庆)计算a?a正确的是( )

569A.a B.a C.a D.a

4.(4分)(2016?重庆)下列调查中,最适合采用全面调查(普查)方式的是( )

A.对重庆市辖区内长江流域水质情况的调查

B.对乘坐飞机的旅客是否携带违禁物品的调查

C.对一个社区每天丢弃塑料袋数量的调查

D.对重庆电视台“天天630”栏目收视率的调查

5.(4分)(2016?重庆)如图,AB∥CD,直线l交AB于点E,交CD于点F,若∠2=80°,则∠1等于( )

A.120° B.110° C.100° D.80°

6.(4分)(2016?重庆)若a=2,b=﹣1,则a+2b+3的值为( )

A.﹣1 B.3 C.6 D.5

7.(4分)(2016?重庆)函数y=中,x的取值范围是( )

A.x≠0 B.x>﹣2 C.x<﹣2 D.x≠﹣2

重庆中考答案

8.(4分)(2016?重庆)△ABC与△DEF的相似比为1:4,则△ABC与△DEF的周长比为( )

A.1:2 B.1:3 C.1:4 D.1:16

9.(4分)(2016?重庆)如图,以AB为直径,点O为圆心的半圆经过点C,若AC=BC=,则图中阴影部分的面积是( )

A. B. C. D.+

10.(4分)(2016?重庆)下列图形都是由同样大小的小圆圈按一定规律所组成的,其中第①个图形中一共有4个小圆圈,第②个图形中一共有10个小圆圈,第③个图形中一共有19个小圆圈,…,按此规律排列,则第⑦个图形中小圆圈的个数为( )

A.64 B.77 C.80 D.85

11.(4分)(2016?重庆)某数学兴趣小组同学进行测量大树CD高度的综合实践活动,如图,在点A处测得直立于地面的大树顶端C的仰角为36°,然后沿在同一剖面的斜坡AB行走13米至坡顶B处,然后再沿水平方向行走6米至大树脚底点D处,斜面AB的坡度(或坡比)i=1:2.4,那么大树CD的高度约为(参考数据:sin36°≈0.59,cos36°≈0.81,tan36°≈0.73)( )

A.8.1米 B.17.2米 C.19.7米 D.25.5米

12.(4分)(2016?重庆)从﹣3,﹣1,,1,3这五个数中,随机抽取一个数,记为a,若数a使关于x的不等式组无解,且使关于x的分式方程﹣=﹣1有整数解,那么这5个数中所有满足条件的a的值之和是( )

A.﹣3 B.﹣2 C.﹣ D.

二、填空题(本题6个下题,每小题4分,共24分)

13.(4分)(2016?重庆)据报道,2015年某市城镇非私营单位就业人员年平均工资超过60500元,将数60500用科学计数法表示为.

14.(4分)(2016?重庆)计算:+(﹣2)=

15.(4分)(2016?重庆)如图,OA,OB是⊙O的半径,点C在⊙O上,连接AC,BC,若∠AOB=120°,则∠ACB=度.

16.

(4分)

2016?重庆)从数﹣2,﹣,0,4中任取一个数记为m,再从余下的三个数中,任取一个数记为n,若k=mn,则正比例函数y=kx的图象经过第三、第一象限的概率是.

17.(4分)(2016?重庆)甲、乙两人在直线道路上同起点、同终点、同方向,分别以不同的速度匀速跑步1500米,先到终点的人原地休息,已知甲先出发30秒后,乙才出发,在跑步的整个过程中,甲、乙两人的距离y(米)与甲出发的时间x(秒)之间的关系如图所示,则乙到终点时,甲距终点的距离是米.

18.(4分)(2016?重庆)正方形ABCD中,对角线AC,BD相交于点O,DE平分∠ADO交AC于点E,把△ADE沿AD翻折,得到△ADE′,点F是DE的中点,连接AF,BF,E′F.若AE=.则四边形ABFE′的面积是.

三、解答题(本题共2个小题,每小题7分,共14分)

19.(7分)(2016?重庆)如图,点A,B,C,D在同一条直线上,CE∥DF,EC=BD,AC=FD.求证:AE=FB.

20.(7分)(2016?重庆)为响应“全民阅读”号召,某校在七年级800名学生中随机抽取100名学生,对概念机学生在2015年全年阅读中外名著的情况进行调查,整理调查结果发现,学生阅读中外名著的本数,最少的有5本,最多的有8本,并根据调查结果绘制了如图所示的不完整的条形统计图,其中阅读了6本的人数占被调查人数的30%,根据图中提供的信息,补全条形统计图并估计该校七年级全体学生在2015年全年阅读中外名著的总本数.

四、解答题(本题共4个下题,每小题10分,共40分)

221.(10分)(2016?重庆)计算:(1)(a+b)﹣b(2a+b)

(2)(+x﹣1)÷.

22.(10分)(2016?重庆)在平面直角坐标系中,一次函数y=ax+b(a≠0)的图形与反比例函数y=(k≠0)的图象交于第二、四象限内的A、B两点,与y轴交于C点,过点A作AH⊥y轴,垂足为H,OH=3,tan∠AOH=,点B的坐标为(m,﹣2).

(1)求△AHO的周长;

(2)求该反比例函数和一次函数的解析式.

23.(10分)(2016?重庆)近期猪肉价格不断走高,引起了民众与政府的高度关注.当市场猪肉的平均价格每千克达到一定的单价时,政府将投入储备猪肉以平抑猪肉价格.

(1)从今年年初至5月20日,猪肉价格不断走高,5月20日比年初价格上涨了60%.某市民在今年5月20日购买2.5千克猪肉至少要花100元钱,那么今年年初猪肉的最低价格为每千克多少元?

(2)5月20日,猪肉价格为每千克40元.5月21日,某市决定投入储备猪肉并规定其销售价在每千克40元的基础上下调a%出售.某超市按规定价出售一批储备猪肉,该超市在非储备猪肉的价格仍为每千克40元的情况下,该天的两种猪肉总销量比5月20日增加了a%,且储备猪肉的销量占总销量的,两种猪肉销售的总金额比5月20日提高了a%,求a的值.

24.(10分)(2016?重庆)我们知道,任意一个正整数n都可以进行这样的分解:n=p×q(p,q是正整数,且p≤q),在n的所有这种分解中,如果p,q

两因数之差的绝对值最小,我们

就称p×q是n的最佳分解.并规定:F(n)=.例如12可以分解成1×12,2×6或3×4,因为12﹣1>6﹣2>4﹣3,所有3×4是12的最佳分解,所以F(12)=.

(1)如果一个正整数a是另外一个正整数b的平方,我们称正整数a是完全平方数.求证:对任意一个完全平方数m,总有F(m)=1;

(2)如果一个两位正整数t,t=10x+y(1≤x≤y≤9,x,y为自然数),交换其个位上的数与十位上的数得到的新数减去原来的两位正整数所得的差为18,那么我们称这个数t为“吉祥数”,求所有“吉祥数”中F(t)的最大值.

五、解答题(本题2个小题,每小题12分,共24分)解答时每小题必须给出必要的演算过程或推理步骤,画出必要的图形,请将解答过程书写在答题卡中对应的位置上.

25.(12分)(2016?重庆)在△ABC中,∠B=45°,∠C=30°,点D是BC上一点,连接AD,过点A作AG⊥AD,在AG上取点F,连接DF.延长DA至E,使AE=AF,连接EG,DG,且GE=DF.

(1)若AB=2,求BC的长;

(2)如图1,当点G在AC上时,求证:BD=CG;

(3)如图2,当点G在AC的垂直平分线上时,直接写出的值.

26.(12分)(2016?重庆)如图1,在平面直角坐标系中,抛物线y=﹣x+2x+3与x轴交于A,B两点(点A在点B左侧),与y轴交于点C,抛物线的顶点为点E.

(1)判断△ABC的形状,并说明理由;

(2)经过B,C两点的直线交抛物线的对称轴于点D,点P为直线BC上方抛物线上的一动点,当△PCD的面积最大时,Q从点P出发,先沿适当的路径运动到抛物线的对称轴上点M处,再沿垂直于抛物线对称轴的方向运动到y轴上的点N处,最后沿适当的路径运动到点A处停止.当点Q的运动路径最短时,求点N的坐标及点Q经过的最短路径的长;

(3)如图2,平移抛物线,使抛物线的顶点E在射线AE上移动,点E平移后的对应点为点E′,点A的对应点为点A′,将△AOC绕点O顺时针旋转至△A1OC1的位置,点A,C的对应点分别为点A1,C1,且点A1恰好落在AC上,连接C1A′,C1E′,△A′C1E′是否能为等腰三角形?若能,请求出所有符合条件的点E′的坐标;若不能,请说明理由.

篇三:2014年重庆市中考数学试卷(含答案)

2014年重庆市中考数学试卷(A卷)

一、选择题(本大题共12小题,每小题4分共48分)

64

5.(4分)(2014?重庆)2014

年1月1日零点,北京、上海、宁夏的气温分别是﹣4℃、5℃、6℃、﹣8℃,

6.(4分)(2014?重庆)关于x的方程=1的解是( )

7.(4分)(2014?重庆)2014年8月26日,第二届青奥会将在南京举行,甲、乙、丙、丁四位跨栏运动员在为该运动会积极准备.在某天“110

米跨栏”训练中,每人各跑5次,据统计,他们的平均成绩都是13.2秒,甲、乙、丙、丁的成绩的方差分别是0.11、0.03、0.05、0.02.则当天这四位运动员“110米

8.(4分)(2014?重庆)如图,直线AB∥CD,直线EF分别交直线AB、CD于点E、F,过点F作FG⊥

FE,交直线AB于点G,若∠1=42°,则∠2的大小是( )

9.(4分)(2014?重庆)如图,△ABC的顶点A、B、C均在⊙O上,若∠ABC+∠AOC=90°,则∠AOC的大小是( )

10.(4分)(2014?重庆)2014年5月10日上午,小华同学接到通知,她的作文通过了《我的中国梦》征文选拔,需尽快上交该作文的电子文稿.接到通知后,小华立即在电脑上打字录入这篇文稿,录入一段时间后因事暂停,过了一小会,小华继续录入并加快了录入速度,直至录入完成.设从录入文稿开始

11.(4分)(2014?重庆)如图,下列图形都是由面积为1的正方形按一定的规律组成,其中,第(1)个图形中面积为1的正方形有2个,第(2)个图形中面积为1的正方形有5个,第(3)个图形中面积为1的正方形有9

个,…,按此规律.则第(6)个图形中面积为1的正方形的个数为( )

12.(4分)(2014?重庆)如图,反比例函数y=﹣在第二象限的图象上有两点A、B,它们的横坐标分别为﹣1,﹣3,直线AB与

x轴交于点C,则△AOC的面积为( )

二、填空题(本大题共6小题,每小题4分,共24分)

13.(4分)(2014?重庆)方程组的解是.

14.(4分)(2014?重庆)据有关部分统计,截止到2014年5月1日,重庆市私家小轿车达到563000辆,将563000这个数用科学记数法表示为 _________ .

15.(4分)(2014?重庆)如图,菱形ABCD中,∠A=60°,BD=7,则菱形ABCD的周长为.

16.(4分)(2014?重庆)如图,△OAB中,OA=OB=4,∠A=30°,AB与⊙O相切于点C,则图中阴影部分的面积为 _________ .(结果保留π)

17.(4分)(2014?重庆)从﹣1,1,2这三个数字中,随机抽取一个数,记为a,那么,使关于x的一次函数y=2x+a的图象与x轴、y轴围成的三角形的面积为,且使关于x的不等式组有解的概率为 _________ .

18.(4分)(2014?重庆)如图,正方形ABCD的边长为6,点O是对角线AC、BD的交点,点E在CD上,且DE=2CE,过点C作CF⊥BE,垂足为F,连接OF,则OF的长为.

三、解答题(本大题共2小题,每小题7分,共14分)

19.(7分)(2014?重庆)计算:

20.(7分)(2014?重庆)如图,△ABC中,AD⊥BC,垂足是D,若BC=14,AD=12,tan∠BAD=,求sinC的值.

+(﹣3)﹣2014×|﹣4|+20.

21.(10分)(2014?重庆)先化简,再求值:÷(﹣)+,其中x的值为方程2x=5x﹣1的解.

22.(10分)(2014?重庆)为鼓励创业,市政府制定了小型企业的优惠政策,许多小型企业应运而生,某镇统计了该镇1﹣5月新注册小型企业的数量,并将结果绘制成如下两种不完整的统计图:

(1)某镇今年1﹣5月新注册小型企业一共有 _________ 家.请将折线统计图补充完整;

(2)该镇今年3月新注册的小型企业中,只有2家是餐饮企业,现从3月新注册的小型企业中随机抽取2家企业了解其经营状况,请用列表或画树状图的方法求出所抽取的2家企业恰好都是餐饮企业的概率.

23.(10分)(2014?重庆)为丰富居民业余生活,某居民区组建筹委会,该筹委会动员居民自愿集资建立一个书刊阅览室.经预算,一共需要筹资30000元,其中一部分用于购买书桌、书架等设施,另一部分用于购买书刊.

(1)筹委会计划,购买书刊的资金不少于购买书桌、书架等设施资金的3倍,问最多用多少资金购买书桌、书架等设施?

(2)经初步统计,有200户居民自愿参与集资,那么平均每户需集资150元.镇政府了解情况后,赠送了一批阅览室设施和书籍,这样,只需参与户共集资20000元.经筹委会进一步宣传,自愿参与的户数在200户的基础上增加了a%(其中a>0).则每户平均集资的资金在150元的基础上减少了a%,求a的值.

24.(10分)(2014?重庆)如图,△ABC中,∠BAC=90°,AB=AC,AD⊥BC,垂足是D,AE平分∠BAD,交BC于点E.在△ABC外有一点F,使FA⊥AE,FC⊥BC.

(1)求证:BE=CF;

(2)在AB上取一点M,使BM=2DE,连接MC,交AD于点N,连接ME.

求证:①ME⊥BC;②DE=DN.

25.(12分)(2014?重庆)如图,抛物线y=﹣x﹣2x+3 的图象与x轴交于A、B两点(点A在点B的左边),与y轴交于点C,点D为抛物线的顶点.

(1)求A、B、C的坐标;

(2)点M为线段AB上一点(点M不与点A、B重合),过点M作x轴的垂线,与直线AC交于点E,与抛物线交于点P,过点P作PQ∥AB交抛物线于点Q,过点Q作QN⊥x轴于点N.若点P在点Q左边,当矩形PQMN的周长最大时,求△AEM的面积;

(3)在(2)的条件下,当矩形PMNQ的周长最大时,连接DQ.过抛物线上一点F作y轴的平行线,与直线AC交于点G(点G在点F的上方).若FG=2DQ,求点F的坐标.

2

26.(12分)(2014?重庆)已知:如图①,在矩形ABCD中,AB=5,AD=

F是点E关于AB的对称点,连接AF、BF.

,AE⊥BD,垂足是E.点

(1)求AE和BE的长;

(2)若将△ABF沿着射线BD方向平移,设平移的距离为m(平移距离指点B沿BD方向所经过的线段长度).当点F分别平移到线段AB、AD上时,直接写出相应的m的值.

(3)如图②,将△ABF绕点B顺时针旋转一个角α(0°<α<180°),记旋转中的△ABF为△A′BF′,在旋转过程中,设A′F′所在的直线与直线AD交于点P,与直线BD交于点Q.是否存在这样的P、Q两点,使△DPQ为等腰三角形?若存在,求出此时DQ的长;若不存在,请说明理由.

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