2012湖南岳阳中考时间是哪里出题

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2012湖南岳阳中考数学解析
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3秒自动关闭窗口2012湖南岳阳中考数学模拟试题5(岳阳市乐斗教育培训学校出品)_中华文本库
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如图,已知?ABC 是等边三角形,边长为 10,点 D、E、F 分别在边 AB、BC、AC 上,且 AD=BE=CF, (1)设 AD 为 x,△ADF 的面积为 y,当 x 为何值时,△ADF 的面积最大,最大面积是多少? (2)当 x 为何值时,△ADF 是直角三角形?
26. 如图,已知抛物线 y= ?
x+2 交 x 轴于 A、B 两点(点 A 在点 B 的左侧),与 y 轴交于点 C。
(1)求点 A、B、C 的坐标。 (2)若点 M 为抛物线的顶点,连接 BC、CM、BM,求△BCM 的面积。 (3)连接 AC,在 x 轴上是否存在点 P 使△ACP 为等腰三角形,若存在,请求出点 P 的坐标;若不存 在,请说明理由。
y M C A 0 第26题 B x
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乐斗教育——WAN 个性化教育专家
参考答案及评分标准
一、选择题(本大题共 8 小题,每小题 3 分,共 24 分)
二、(本大题共 8 小题,每小题 3 分,共 24 分) 9. 7 .3 ? 10
; 10. ab ( a ? b )( a ? b ) ;11. 1、2、3 ;12.60;
13. 4 x 、4x、-4x、-1 都可;14. 7.5 ; 15. 320 ? ;16. 0.3 三、解答题 (本大题共 6 小题,每小题 6 分,满分 36 分) 17. 解:原式= 原式=6+1-2-4……………………………4 分 =1 18.解:原式=解得 ?
?x ? 5 ?x ? 1
…………………………………6 分 …………………………………3 分 …………………………………4 分
所以不等式组的解是 1﹤ x ≤5
在数轴上表示如下………………………………………………6 分
19.图形如图……………………4 分 相似比为 2 ……………………6 分 注:答案不唯一,答对即可
20 . 解 : 解 : ( 1 ) 人,……………………1 分 咨询电话:3189322
400÷ 30%=1200
人 , 共 调 查 了
乐斗教育——WAN 个性化教育专家 同意方案一的有:-180-400=400 人,图略……………………3 分 (2) 360 ?
180 1200 ? 54 ……………………5 分
(3)因为两个方案中除了方案一的第一档电价没有涨价外,其余的都涨价了……6 分 21.解:因为 AO=2,OB=3,所以点 C 的坐标为 C(-2,3)……………………1 分 代入 y=
得 k=-6,所以双曲线的解析式是 y=-
……………………3 分
设直线的解析式是 y=kx+b,且直线经过 A(-2,0),B(0,3) 所以 ?
?0 ? ?2k ? b ?3 ? b
……………………5 分
,b=2,所以直线的解析式是 y=
x+2……………………6 分
22. 解:因为=1:1,则∠CBF=45° ,又因为 CF=12 米,则 FB=12 米,………………2 分
? 由于新的斜坡的坡角为 30 ,如果坡底用字母 G 表示,则 CG=24 米,FG=12 3 米,
……………………4
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时间: 09:57:20 来源:可可英语 编辑:Ookamie
I.听力技能 (共两部分,20小题,每小题1分;共20分)A) 图片判断
每幅图片你将听到A、B、C三个句子,请根据图片内容,从所听到的句子中选择一个正确答案。听每小题前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。每小题仅读一遍。
5. A B C B) 对话理解
你将听到七段对话,根据你所听到的对话内容,从题中所给的A、B、C三个选项中选出最佳答案。听每段对话前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。每段对话读两遍。
听下面一段对话,做第6小题。(
)6. What time will they meet ?
A. At 6:30.
B. At 6:13.
C. At 6:00 .
听下面一段对话,做第7小题。(
)7. What’s wrong with the woman ?
A. She wants to buy a car.
B. She is going to learn to drive.C. She wants to see a doctor.听下面一段对话,做第8小题。(
)8. How was Tom’s school trip last Saturday?
A. He didn’t have fun .
B. He had great fun.
C. The trip was fun.
听下面一段对话,做第9小题。(
)9. What color is the man’s ball?
C. Black and white.
听下面一段对话,做第10小题。(
)10.Where are the man and the woman talking?
A. At a school library.
B. In a hospital.
C. In a fast food restaurant.听下面一段对话,做第11、12小题。(
)11. What are they going to do?
A. Go boating.
B. Go fishing.
C. Go camping.(
)12. What’s the weather like?
A. It’s raining.
B. It’s sunny.
C. It’s snowing.
听下面一段对话,做第13~15小题。(
)13.When will the talk be given?
B. Next week.
C. Next month.(
)14. How long has Gina learned computer? She has learned it for more than
A. one year
B. two years
C. three years(
)15. What does Gina want to be when she grows up?
A. A computer programmer.
B. A computer engineer.
C. A manager. C)笔录要点
你将听到一段短文,根据你所听到的短文内容,完成下列表格中16~20小题(每空不超过三个单词)。短文读两遍。 The Voice Of The School(校园之声)What timeIt’s
o’clock now. It’s time for you to have a
break.WhatMusic can help
you forget all the
.HowYou and your
classmates must be
to hear your favorite music.What kindWestern
classical(经典的) music makes people feel richer and
makes people do things faster.WhoMost of
like pop music best. Ⅱ. 知识运用(共两部分,20小题,每小题1分;共20分)A) 单项填空
从A、B、C三个选项中选择一个最佳答案填空,或回答问题。(
) 21.Jeremy Lin is the first Chinese-American basketball _____ in the NBA. He is a little different from Yao Ming.A. dancer
C. watcher(
) 22. A new road was built between our village and the town. _____ road is wide and clean.A. 不填
) 23. —Do you know the lady ______is talking with Mr. Smith?
—Yes, she’s our new chemistry teacher, Miss Brown.A. who
) 24. —Who is that?
—It _____ be Shirly. Only she is in red today .A. could
) 25. Wembley Stadium(温布利大球场)is one of the _____ soccer fields in the world.It will be the place for soccer matches during the Olympics next month.A. famous
B. more famous
C. most famous(
) 26. —What do you think of Zhou Libo?
—I think he does well _____ talk shows. Many people like him.A. in
) 27. —Jimmy isn’t here. Where is he?
—He hurt his arm on the playground just now. He ______ to the school doctor’s.A. has gone
B. has been
) 28 .— How is the movie“Snow White and the Huntsman” ?
— _____wonderful movie it is!A. How
C. What a(
) 29. —What else do you need for your trip?
— _____else. I’ve packed everything.A. Something
B. Everything
C. Nothing(
) 30. The car _____ by the policeman because the driver was drunk.A. stopped
B. was stopped
C. were stoppedB) 完形填空
通读短文,掌握其大意,然后从各题所给的A、B、C三个选项中选出一个最佳答案。On a Friday night, a young violinist was playing his violin at the entrance (通道口)of the subway station. The music was so wonderful
people slowed down to listen and put some money into his hat.The next day, the violinist came to the entrance again. He
his hat as usual. Beside the hat there was a piece of paper. It said,“George Sang has put an important thing
my hat by mistake. Welcome to claim(认领) it.” Soon the people went to see the words and they
guessed what it could be. After a while, a man came up and said,“I know you would certainly come here.” The violinist asked,“ Did you lose something?”“A lottery ticket(彩票).” The violinist took out a lottery ticket with George’s name on it. George took it and danced
.George was
office worker. He bought the lottery and won a prize of $500,000. But when he gave $50 to the violinist for his wonderful music, the lottery ticket was thrown into his hat, too. The
was a poor college student. That morning, he was going to fly to Vienna for his education. However, when he
the lottery ticket, he didn’t go as he had planned. Instead, he went to the entrance again to wait for the owner of the lottery ticket.Later someone asked the violinist
he didn’t take the lottery ticket to pay for his high education. He said,“Although I don’t have much money, I live happily. If I take the money, I will lose honesty, and I
be happy forever.”(
) 31. A. but
C. because
) 32. A. put down
) 33. A. above
) 34. A. both
) 35. A. slowly
B. happily
) 36. A. a
) 37. A. office worker
C. violinist(
) 38. A. looked
B. looked for
) 39. A. why
) 40. A. will
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