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江苏省兴化市昭阳湖初级中学2016-2017年度八年级上学期英语期中卷(有答案)

江苏省兴化市昭阳湖初级中学2016-2017年度八年级上学期英语期中卷(有答案)
江苏省兴化市昭阳湖初级中学2016-2017年度八年级上学期英语期中卷(有答案)

2016-2017学年八年级上英语期中试卷

姓名:_______________ 班级:_______________ 成绩:________________ 一、单项选择(共15小题;每小题1分,满分15分)

( )1.. Eddie is eight years old, but we have seve n can dies only. We n eed ______ can die.

A. only one

B. one more

C. some more

D. one much

( )2. They are ______ at th ___________ n ews.

A. excited, excited

B. excit ing, excited

C. excit ing, excit ing

D. excited, excit ing

( )3. Guo Jingming is one of ____ teen ager writers today, thoughsome old writers don like him very much.

A. more famous B . most famous

B. C. the most famous D. famous

( )4. My best friend is a girl _________ r ound eyes and long hair.

A. has

B. with

C. had

D. is hav ing

( )5. Mr Li made Tom _____________ his homework after school. This made Tom

A. to do, sad

B. do, sadly

C. do, un happy

D. does, un happy

( )6. His legs are very long and they ______________ un der the desk.

A. not fit

B. don 'fit

C. aren'tfit

D. does n'fit

( )7. Look! My little brother _________ a smile on his face.

A .has B. is weari ng C. wear D. with

( )8. Whe n she feels _______ , I talk to her and make her happy.

A. bored or un happy

B. bori ng or happy

C. bored or happy

D. bori ng or un happy

( )9. --What' s your best frie nd like?

A. He is fine. Thank you.

B. He is a doctor.

C. He likes watch ing TV.

D. He is helpful and gen erous.

( )10. Soccer is beco ming _____________ in China today.

A. most and most popular

B. most popular

C. more popular and popular

D. more and more popular

( )11.Kitty is ________ of the twin sisters. She is weaker in her less ons tha n her sister.

A. lazy

B. lazier

C. the lazier

D. the laziest

( )12.The doctor asked him to take more ________ t o keep ________ .

A exercise ; fit B. exercises ; fit

C. exercises ; health

D. Exercises ; healthy

( )13.The taxi is going _______ faster tha n the bus.

A.very

B. much

C. more

D. Most

( )14. Nancy spe nt half an hour ________ the pia no every day.

A. to practice play ing

B. practis ing play ing

C. practis ing to play

D. to practise to play

( )15. The twi ns usually ______ home at 4:30 pm after school.

A. arrive at

B. reach to

C. get to

D. arrive

二、完形填空(共10小题;每小题1分,满分10分)

David is a middle school stude nt. He had lived in a small 1 for fiftee n years. It was a small place with only five families living there. His father, Mr. Hill, was a rich farmer and later on he 2 a shop in our tow n. He bought a house here last mon th. His _3 moved to the new house and his son began to study in our class. But he had 4 friends ,here. At first he ofte n played by 5 .

t His n eighbor Cathy is a kind girl. She has many frie nds. She finds the boy n ever talks with an ybody and decides to help him. David 6 to stay with her and talks to her a lot. Now they ' re good friends.

One after noon, Cathy told David, “It ' ll be my sixtee nth birthday tomorrow. I

birthday party. Would you like to come? ”

“_7_. I ' gdad to, ” the boy said happily.

David got home and thought of a 8 he could give to Cathy. He was sorry that he _9 to ask the girl what she liked. He couldn ' t telephone her because he didn

10 . At that moment Mrs. Hill came and asked, “ What' s the matter, dear? '

“ What would you like if it was your sixtee nth birthday, Mom? ”

a Nothing, ”the woma n said, “ 1 just wish I were sixtee n.

( )1. A. town B. city C. village D. country

( )2. A.open B. opens C. opened D. ope ning

( )3. A. home B. shop C. buildi ng D. family

( )4. A. a few B. few C. a little D. little

( )5. A. himself B. him C. his D. he

( )6. A. enjoy B. enjoys C. like D. likes

( )7. A. Well B. No C. Sorry D. Certai nly

( )8. A.book B. dress C. prese nt D. pen

( )9. A. forgot B. forget C. remember D.

remembered

( )10. A. home B. nu mber C. place D. Address

三、根据对话内容从方框内选择恰当的句子补全对话。其中有两项是多余的。( 5分) A: You look unhappy today.1. ________

B: Yesterday whe n I got home I found my pare nts read ing my diary .I got very

an gry.Should n't I keep my own secrets?

A: Of course you can keep your secrets.2. _______

B: No, but I shouted at them.They did n't say a word.They just kept silenl.3. ______

A: In fact, your pare nts should n't read your diary.They should respect(your privac y 隐私).4. ______ They want to make sure you aren't in any trouble and they want to

un dersta nd your life and study better in this way.Maybe you hurt your pare nts.

B:I agree.5. ______

A: Say sorry to them.Try talking to them more.Let them know what you are doing so that they won't worry about you so much.

B: OK.I'll do as you told me.

A. Did you quarrel with your parents?

B. But your pare nts are just worried about you.

C. That's a good idea.

D. Now I feel very sad.

E. What should I do now?

F. Whats the matter?

G. I'm sorry to hear that.

四、阅读理解(共20小题;每小题2分,满分40分)

A

We are all busy talk ing about and using the Intern et , but how many of us know the history of the In ternet?

Many people are surprised when they find that the Internet was set up in the 1960s. At that time, computers were large and expe nsive. Computer n etworks did n't work well. If one computer in the n etwork broke dow n, the n the whole n etwork stopped. So a new n etwork system had to be set up. It should be good eno ugh to be used by many differe nt computers. If part of the n etwork was not work in g, in formati on could be sent through ano ther part. I n this way computer n etwork system would keep on worki ng all the time.

At first the Internet was only used by the gover nment 政府),but in the early 1970s, universities , hospitals and banks were allowed允许)to use it too. However, computers were still very expensive and the Internet was difficult to use. By the start of the 1990s, computers became cheaper and easier to use. Scie ntists had also developed softwafe件() that made "surfi ng"(浏览)the Internet more convenient 方便).

Today it is easy to get on-line and it is said that millions of people use the Internet every day. Sending e-mail is more and more popular among students.

The Internet has now become one of the most important parts of people's life.

1. The Internet has a history of more than __ years.

A. sixty

B. ten

C. thirty

D. twenty

2. A new n etwork system was set up to ___ .

A. make computers cheaper

B. make itself keep on worki ng all the time

C. break dow n the whole n etwork

D. make computers large and expe nsive

3. At first the Internet was only used by ______ .

A. the gover nment

B. uni versities

C. hospitals and banks

D. schools

4. _____ made "surfi ng" the Internet more convenient.

A. Computers

B. Scie ntists

C. Software

D. I nformatio n

5. Which of the following is true?

A. In the 1960s, computer networks worked well.

B. In the early 1970s, the Internet was easy to use.

C. Sending e-mail is now more popular among stude nts tha n before.

D. Today it's still not easy to get on-li ne.

(B)

A friend of mine n amed Paul received an expe nsive car from his brother as a Christmas presen t On Christmas Eve when Paul came out of his office a street urchin顽童)was walk ing around the shining car. “Is this your car, Paul?” he asked Paul an swered “ Yes, my brother gave it to me for Christmas ” The boy was surprised “You mean your brother gave it to you and it didn' t cost you anything? Boy, I wish…” He hesitated犹豫).

Of course, Paul knew what he was going to wish for He was going to wish he had a brother like that. But what the boy said surprised Paul greatly.

“I wish, ” the boy went on, “that I could be a brother like that ” Paul looked at the boy in surprise, the n he said agai n, “Would you like to take a ride in my car?”

“Oh yes, I' d love that.”

After a short ride,the boy turned and with his eyes shiningsaid, “Paul, would you mind (介意)driving in front of my house ?”

Paul smiled a little. He thought he knew what the boy wan ted He wan ted to show his n eighbours that he could ride home in a big car. But Paul was wrong aga in. “ Will you stop where those two steps are the boy asked

He ran up to the steps. The n in a short while Paul heard him coming back, but he was not coming fast. He was carrying his little crippled (残疾的)brother. He sat him down on the step and poin ted to the car.

“ There she is, Buddy, just like I told you upstairs. His brother gave it to him for Christmas and it didn't cost him a cen(美分).And some day I'm going to give you one just like it… then you can see for yourself all the nice things in the Christmas windows that'I ve been trying to tell you about. ”

Paul got out and lifted the boy to the front seat of his car. The shinin g-eyed older brother climbed in beside him and the three of them began an unforgettable难忘的)holiday ride.

6. The street urchin was very surprised when ________

A . Paul received an expensive car

B . Paul told him about the car

C . he saw the shining car

D . he was walking around the car

7. From the story we can see the urchin _______ A. wished to give his brother a car

B. wan ted Pau ' s brother to give him a car

C. wished he could have a brother like Paul s

D. wished Paul could be a brother like that

8. The urchin asked Paul to stop his car in front of his house ______ A . to show his neighbours the big car B . to show he had a rich friend C . to let his brother ride in the car D . to tell his brother about his wish 9 . We can infer (推断)from the story that ______ . A. Paul couldn ' t understand the urchin

B . the urch in had a deep love for his brother

C . the urchi n wished to have a rich brother

D . the urchi n ' s wish came true in the end

10 . The best n ame of the n ame story is _____ _ A . A Christmas Prese nt B . A Street Urch in C . A Brother Like That D . An Un forgettable Holiday Ride

C

“Cool ” is a word with many meanings Its old meaning is used to express (表达)a temperature that is a little bit cold. As the world has changed the word has had many differe nt meaning . “ Cool ” can be used to express feeli ngs of in terest in almost any thing When you see a famous car in the streetmaybe you will say , “ It' s cool . ” You may think , “He ' s so coo l,” when you see your favourite footballer.

We all maximize (扩大)the meaning of'cool ” . You can use it in stead of many words such as “new ” or “surprising ” . Here '

way the word is used. A teacher asked her students to write about the waterfall 瀑布)had visited . On one student s paper was just the one sentence 句子),“It' s so cool .

Maybe he thought it was the best way to show what he saw and felt But the story also shows a scarcity (缺乏)of words . Without “ cool ” , some people have no words to show the same meaning So it is quite important to keep some credibility

(可信 性). “ cool ”? I can . And I think they are also very cool .

11. We know that the word “ cool has had ______ .

A . only one meaning

B . no meanings

C . many differe nt meanings

D . the same meaning

12 . In the passage the word “express' means “ _______ ” .

A . see B. show C . know D . feel

13 . If you are ______ something you may say “It ' s cool . ” A . in terested in B . angry about C . afraid of D . un happy with

14.The writer takes an example to show he is ________ the way the word is used

A . pleased with

B . stra nge to

C . worried about

D . careful with 15 . In the passage the writer suggests (暗示)that the word “cool” ________________________ . A.ca n be used in stead of many words https://www.doczj.com/doc/eb1026094.html,ually means someth ing in terest ing C.ca n make your life colourful D . may not be as cool as it seems D

Now let ' s think about television and our life at home. day almost all the homes have televisi on sets. There are many in terest ing TV programs that we can enjoy with our family. Well, how many hours do you watch television a day? You spend a lot of time watching TV don ' t you?

TV can ope n our eyes and min ds. It also gives us a lot of useful in formati on that we can not learn at school. For example, we don ' t go out but we can know the things all over

world every day.

On the other hand, it takes away much good time to think carefully, for talking with our family and for reading books. We sometimes find that we sit in front of a TV set without thinking of any thi ng. It is very importa nt for us to select good TV programs. We must try to make good use of it to plan our lives better.

四、词汇运用(共15小题;每小题1分,满分15分)

A. 根据句意和汉语提示,在空白处填入一个适当的单词。

I. __________________ Learning (外国的)Ian guages is fun.

2.ln class, we ofte n ___________ (讨论)the problems with our classmates.

3.1 hate the __________ (广告)whe n I watch TV.

4. Different countries have different ___________ 文化).

5. With your ______ (支持),we will win the match.

B. 根据短文意思和所给首字母,写出一个完整正确的单词。

6. He ofte n o _____ me help whe n I am in n eed.

7.1 like her bright s _______ eyes.

8. My sister has long s __________ hair.

9. We liste n to music at I .

10. Do you have any p ______ for the weeke nd?

C. 用所给词的适当形式填空.

1. ________ ( Brita in)En glish is differe nt from America n En glish in some ways.

2. Every one likes to stay with Lily because she is very ____________ ( humour).

3. Mr Smith had a __________ (discuss) with us about the film just now.

4. The childre n can'wait ________ (ope n) the box whe n he got home.

5. Mike does n'do his homework as __________ (careful) as his stude nts.

五、书面表达(共1小题;满分15分)

1 Amy是我最好的朋友。

2她方脸,长鼻,明亮而微笑的眼睛,马尾辫,漂亮可爱。

3她在任何时候乐意助人。常常帮我辅导作业。

4长大后她想当社会工作者。这样她可以听取人们的问题,并帮他们解决问题。

5我们总是愿意分享彼此的欢乐和悲伤(sadness)我们将永远是好朋友。

My Best friend

2016-2017学年八年级上英语期中试卷答题纸、单项选择(共15小题;每小题1分,满分15分)

、完形填空(共10小题;每小题1分,满分10分)

?补全对话。(5分)

四、阅读理解(共20小题;每小题2分,满分40 分)

_______________

2016-2017学年八年级上英语期中试卷

参考答案

四、用所给词的适当形式填空

l.foreign 2.discuss 3.advertisements/advertisement 4.cultures 5.support

6.offers

7.smili ng

8.straight 9」un chtime 10.pla ns

五、单词拼写

1.British

2. humorous

3. discussion

4. to open

5. carefully

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与处理问题. (2)通过抽样调查,初步感受抽样的必要性,体会用样本估计总体的思想——注意用样本估计总体是归纳法在统计中的一种运用,抽样调查是一个重点内容. (3)了解频数及频数分布,掌握划记法,会用表格整理数据表示频数分布,体会表格在整理数据中的作用——注意引导学生参与到统计的活动中去,在过程(收集和整理数据方面)中学习. (3)学会用简单频数分布直方图和折线图描述数据的方法,进一步体会统计图表在描述数据中的作用,会根据问题需要选择适当的统计图描述数据——注意决定组距与组数是一个教学难点. (4)通过实际参与收集、整理、描述和分析数据的活动,经历统计的一般过程,感受统计在生活和生产中的作用,增强学习统计的兴趣,初步建立统计的观念,培养重视调查研究的良好习惯和科学态度——注意挖掘现实生活中的素材进行教学,同时在选择真实素材进行教学时还要注意数据的真实性,要培养学生尊重客观事实、实事求是的科学态度. 三、教学重点与难点 1、教学重点 (1)计算频数和频率. (2)从扇形统计图、条形统计图、折线统计图中获取信息. 2、教学难点 (1)分析统计图表, 获取有用的信息. (2)认识各类统计图表的优缺点,选择恰当的统计图表来表示数据. 四、教材编写特点 从《标准》上看,内容的安排呈现螺旋上升,在三个学段均有安排,教学要求随着学段的升高逐渐提高.“数据的收集、整理和描述”侧重在收集、整理和描述数据上,涉及的分析数据比较简单,“数据集中趋势和离散程度”侧重分析数据上. 五、教学建议 1、组织学生开展活动,让学生明确调查对象,分析真实数据,提倡学生发表自己的意见和看法,使学生的学习在合作探究活动中进行. 2、使学生经历数据处理的过程:收集数据、整理数据、分析数据.注重学生的实践活动,鼓励学生通过自己的思考、实践以及与他人的讨论,寻求合理的答案,获得数学说理的经验.

兴化市板桥初级中学中考第二轮专题复习第二讲规律型问题

☆◆☆中考数学中的规律型问题☆◆☆ 例1、(09江苏)下面是按一定规律排列的一列数: 第1个数: 11122-?? -+ ??? ; 第2个数:2311(1)(1)1113234???? ---??-++ + ??? ??????? ; 第3个数:234511(1)(1)(1)(1)11111423456???????? -----??-++ +++ ??????? ??????????? ; …… 第n 个数:232111(1)(1)(1)111112342n n n -???? ?? ----??-++++ ??? ? ?+?????? ?? . 那么,在第10个数、第11个数、第12个数、第13个数中,最大的数是( ) A .第10个数 B .第11个数 C .第12个数 D .第13个数 【答案】A 例2、(09孝感)对于每个非零自然数n ,抛物线2 211(1) (1) n n n n n y x x +++=- + 与x 轴交于 A n 、 B n 两点,以n n A B 表示这两点间的距离,则112220092009A B A B A B ++ +的值是( ) A . 20092008 B . 20082009 C . 20102009 D . 20092010 【答案】D 例3、(09重庆)观察下列图形,则第n 个图形中三角形的个数是( ) A .22n + B .44n + C .44n - D .4n 【答案】D . …… 第1个 第2个 第3个

例4、(09河北)希腊著名的毕达哥拉斯学派把1、3、6、10 … 这样的数称为“三角形数”,而把1、4、9、16 … 这样的数称为“正方形数”. 从图7中可以发现,任何一个大于1 的“正方形数”都可以看作两个相邻“三角形数”之和.下列等式中,符合这一规律的是( ) A .13 = 3+10 B .25 = 9+16 C .36 = 15+21 D .49 = 18+31 【答案】C 例5、(09内江)把一张纸片剪成4块,再从所得的纸片中任取若干块,每块又剪成4块,像这样依次地进行下去,到剪完某一次为止,那么2007,2008,2009,2010这四个数中______________可能是剪出的纸片数。 【答案】2008 例6、(09仙桃)如图所示,直线y =x +1与y 轴相交于点A 1,以OA 1为边作正方形OA 1B 1C 1,记作第一个正方形;然后延长C 1B 1与直线y =x +1相交于点A 2,再以C 1A 2为边作正方形C 1A 2B 2C 2,记作第二个正方形;同样延长C 2B 2与直线y =x +1相交于点A 3,再以C 2A 3为边作正方形C 2A 3B 3C 3,记作第三个正方形;…依此类推,则第n 个正方形的边长为________________. 【答案】n 例7、(09泸州)如图1,已知Rt △ABC 中,AC=3,BC= 4,过直角顶点C 作CA 1⊥A B ,垂足为A 1,再过A 1作A 1C 1⊥BC ,垂足为C 1,过C 1作C 1A 2⊥AB ,垂足为A 2,再过A 2作A 2C 2⊥BC ,垂足为C 2,…,这样一直做下去,得到了一组线段CA 1,A 1C 1,12C A ,…,则CA 1= , 5 55 4C A A C 4=1+3 9=3+6 16=6+10 …

江苏省兴化市昭阳湖初级中学2019-2020年八年级上学期英语第二次质量抽测(无答案)

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2014年度江苏省基础教育青年教师教学基本功大赛获奖名单

附件:2014年江苏省基础教育青年教师教学基本功大赛 获奖名单 小学音乐 一等奖(8人) 陆韵梅南通市崇川学校 崔海鹏如皋市安定小学 盛昕熳常州市局前街小学教育集团 李静常州市第二实验小学 彭剑慧连云港市东港小学 吕乐怡无锡市洛社中心小学 薛冰江阴市晨光实验小学 薛张悦苏州高新区金色小学 二等奖(8人) 季洁南京市琅琊路小学天润城分校 王龄萱连云港市解放路小学 郑倩徐州市淮西小学 吴琳苏州工业园区星洲学校 王蕊南京师范大学附属小学 王霞盐城市实验小学 丁音音扬州市沙口小学 张敏东台市第一小学教育集团

三等奖(9人) 余亚镇江市金山小学 张莉莉淮安市实验小学 李淑娟丹阳市新区实验小学 王梓徐州市黄山中心小学 方畅妍泰州九龙实验学校 朱秀秀宿迁市泗洪县明德学校 徐静宿迁第一实验小学 张妤淮阴师范学院第一附属小学胥洁雯扬州宝应开发区国际学校 小学品德 一等奖(8人) 徐美玲镇江扬中市第二实验小学 乐琰盐城市毓龙路实验学校 胡清南京市赤壁路小学 华琳智苏州工业园区星湾学校 吴梦玉淮安市曙光双语学校 王苏泰州市实验小学 沈红霞南通市海门实验学校附属小学鲁剑锋无锡市新区坊前实验小学

二等奖(8人) 卞小利连云港师专第二附属小学 郭筱凯常州市第二实验小学 梁翠芳宿迁市沭阳县南湖小学 桂冠群无锡市塔影中心小学 王燕镇江扬中市油坊中心小学 黄俊俊南通市如东县实验小学 陈萍盐城东台市实验小学 王成宿迁市泗洪县第一实验学校 三等奖(10人) 李竞淮安市实验小学 陈蕾南京市晓庄学院第一实验小学胡静苏州张家港市梁丰小学 赵余霞泰州靖江市城中小学 许丽扬州市江都区真武小学 宋梅徐州市青年路小学 朱翠莹扬州市江都区龙川小学 王颖徐州邳州市英华实验学校 李桦常州市怀德苑小学 马丽连云港市大庆路小学

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Unit 1Where did you go on vacation? 教学课题第一课时Section A(1a-2d ) 【知识目标】 Important words:anyone,anywhere,wonderful,few,most Important phrases:quite a few,on vacation,anything interesting Important sentences: 1.Where did you/he/she/they go on vacation? 教学目标 2.Did you/he/she/they go to Central Park? 【能力目标】 能用目标语言谈论过去发生的事件。 【情感目标】 通过听力训练、角色扮演等方式, 学会与他人分享经历,并提高学生的英语听说能力。 重点 :动词一般过去时态的应用。 教学重难点 难点 :动词过去式的变化规则。 教学过程 ◆Step 1Leading in 1.Guess:Get Ss to guess what the teacher did on vacation: Where did I go on vacation? What did I do on vacation? 2.Free talk:Guide Ss to talk about their own vacation. How was your summer vacation? Where did you go on vacation? ③D id you do anything special/great? ④D id you go anywhere interesting/beautiful...? ⑤D id you meet anyone interesting? 设计意 图通过情境设计, 从学生身边的问题导入新课, 减少难度 , 从而调动了学生参与课堂教学活动的热 情 , 提高学生的学习积极性。 ◆Step 2合作探究 出示一些假期活动的图片(见课件 ),根据问题进行互动交流学习。 ◆Step 31a Match the activities with the pictures.(见课件 ) ◆Step 4 Pair work Make conversations about the people in the picture.(1c) ◆Step 5 Listening 1b 1.Students read the names and guess their activities.(结合 1a中的短语) 2.Listen to the tape and number the people in the picture [1-5]. 3.Check the answers.(见课件 )

2020-2021学年第一学期江苏省兴化市昭阳湖初中九年级语文复习每日一练(七)(无答案)

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省兴化市昭阳湖初级中学2014-2015学年八年级数学下学期期中模拟试题2(无答案) 苏科版

2014—2015学年度第二学期八(下)数学期中模拟试卷(二) 班级: 姓名: 学号: 得分: 一、选择题:(本大题共有10小题,每小题3分,共30分,) 1.分式242 x x -+的值为0,则 ( ) A .x =-2 B .x =2 C .x =0 D .x =±2 2x 的取值范围是 ( ) A .x>1 3 B .x>-1 3 C .x ≥1 3 D .x ≥-1 3 3.化简分式2221111x x x ??÷+ ?--+?? 的结果是 ( ) A .2 B .21x + C .21x - D .-2 4.解分式方程22311x x x ++=--时,去分母后变形为 ( ) A .2+(x +2)=3(x -1) B .2-x +2=3(x -1) C .2-(x +2)=3(1-x) D .2-(x +2)=3(x -1) 5.若点(x 1,y 1)、(x 2,y 2)、(x 3,y 3)都是反比例函数x y 1-=的图象上的点,并且 x 1<0<x 2<x 3,则下列各式中正确的是 ( ) A 、y 1<y 2<y 3 B 、y 2<y 3<y 1 C 、y 3<y 2<y 1 D 、y 1<y 3 <y 2 6.下列根式中,最简二次根式是 ( ) A B C D 7.计算 2311x x +--的结果是 ( ) A .11x - B .11x - C .51x - D .51x - 8.如图,函数y =a(x -3)与y =a x ,在同一坐标系中的大致图象是

二、填空题:(本大题共8小题,每小题3分,共24分) 9= . 10.若(210a b +-=则1a b +的值为 . 11.12-=_______. 12.已知关于x 的方程22x m x +-=3的解是正数,则m 的取值范围是_______ 13.如图,反比例函数y =3x (x>0)的图像与矩形OABC 的边AB 、BC 分别交于点E 、F ,且AE =BE ,则△OEF 的面积为_______. 14. 已知关于x 的分式方程 21a x ++=1的解是非正数,则a 的取值范围是_______________。 (16题) (18题) 15.若219x x ??+= ???,则21x x ??- ?? ?的值为 . 16.如图所示,三角形ABO 的面积为12,且AO =AB , 双曲线y =k x 过AB 的中点D ,则k 的值为 . 三、解答题:(本大题共11小题,共76分.). 18.)21 +- ?÷ ? 19.(本题满分8分,每小题4分) (1)化简:22211a a a a a a --??-÷ ?+? ? (2)解方程:2111x x x x ++=+

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