人教初中英语mp3
篇一:人教新目标七年级下册英语课本及单词配套听力录音
江西省南昌市2015-2016学年度第一学期期末试卷
(江西师大附中使用)高三理科数学分析
试卷紧扣教材和考试说明,从考生熟悉的基础知识入手,多角度、多层次地考查了学生的数学理性思维能力及对数学本质的理解能力,立足基础,先易后难,难易适中,强调应用,不偏不怪,达到了“考基础、考能力、考素质”的目标。试卷所涉及的知识内容都在考试
的范围内,几乎覆盖了高中所学知识的全部重要内容,体现了“重点知识重点考查”的原则。 1(回归教材,注重基础
试卷遵循了考查基础知识为主体的原则,尤其是考试说明中的大部分知识点均有涉及,其中应用
与抗战胜利70周年为背景,把爱国主义教育渗透到
当中,使学生感受到了数学的育才价值,所有这些题目的设计都回归教材和中学教学实际,操作性强。 2(适当设置题目难度与区分度
选择题第12题和填空题第16题以及解答题的第21题,都是综合性问题,难度较大,学生不仅要有较强的分析问题
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和解决问题的能力,以及扎实深厚的数学基本功,而且还要掌握必须的数学思想与方法,否则在有限的时间内,很难完成。 3(布局合理,考查全面,着重数学方法和数学思想的考察
在选择题,填空题,解答题和三选一问题中,试卷均对高中数学中的重点内容进行了反复考查。包括函数,三角函数,数列、立体几何、概率统计、解析几何、导数等几大版块问题。这些问题都是以知识为载体,立意于能力,让数学思想方法和数学思维方式贯穿于整个试题的解答过程之中。
二、亮点试题分析
1(【试卷原题】11.已知A,B,C是单位圆上互不相同的三点,且满足AB?AC,则ABAC?的最小值为( )
?
?
??
1
41B(?
23C(?
4D(?1
A(?
【考查方向】本题主要考查了平面向量的线性运算及向量的数量积等知识,是向量与三角的典型综合题。解法较多,
2
属于较难题,得分率较低。
???
【易错点】1(不能正确用OA,OB,OC表示其它向量。
????
2(找不出OB与OA的夹角和OB与OC的夹角的倍数关系。
???
【解题思路】1(把向量用OA,OB,OC表示出来。
2(把求最值问题转化为三角函数的最值求解。
??2??2
【解析】设单位圆的圆心为O,由AB?AC得,(OB?OA)?(OC?OA),因为
??????
,所以有,OB?OA?OC?OA则OA?OB?OC?1??????
AB?AC?(OB?OA)?(OC?OA)
???2????
?OB?OC?OB?OA?OA?OC?OA
?????OB?OC?2OB?OA?1
????
设OB与OA的夹角为?,则OB与OC的夹角为2?
??11
所以,AB?AC?cos2??2cos??1?2(cos??)2?
3
22
??1
即,AB?AC的最小值为?,故选B。
2
?
?
【举一反三】
【相似较难试题】【2015
天津,理14】在等腰梯形ABCD中,已知
AB//DC,AB?2,BC?1,?ABC?60? ,动点E和F分别在线段BC和DC上,且,????????????1????????????BE??BC,DF?DC,则AE?AF的最小值为.
9?
【试题分析】本题主要考查向量的几何运算、向量的数量积与基本不等式.运用向量的几何
????????????????运算求AE,AF,体现了数形结合的基本思想,再运用向量数量积的定义计算AE?AF,体
现了数学定义的运用,再利用基本不等式求最小值,体现了数学知识的综合应用能力.是思维能力与计算能力的综合体现. 【
】
????1????????1????
4
【解析】因为DF?DC,DC?AB,
9?2
????????????1????????1?9?????1?9?????CF?DF?DC?D
C?DC?DC?AB,
9?9?18?
29 18
????????????????????AE?AB?BE?AB??BC,????????????????????????1?9?????1?9?????????AF?AB?BC?CF?A
B?BC?AB?AB?BC,
18?18?
?????????????????1?9??????????1?9?????2????2?????
?1?9?????AE?AF?AB??BC??AB?BC??AB??BC??1????AB?BC
18?18?18?????
??
211717291?9?19?9?
?????? ?4????2?1?
cos120??
9?218181818?18
?????212???29
当且仅当. ??即??时AE?AF的最小值为
9?2318
5
2(【试卷原题】20. (本小题满分12分)已知抛物线C的焦点F?1,0?,其准线与x轴的
?
交点为K,过点K的直线l与C交于A,B两点,点A关于x轴的对称点为D( (?)证明:点F在直线BD上; (?)设FA?FB?
?
?
8
,求?BDK内切圆M的方程. 9
【考查方向】本题主要考查抛物线的标准方程和性质,直线与抛物线的位置关系,圆的标准方程,韦达定理,点到直线距离公式等知识,考查了解析几何设而不求和化归与转化的数学思想方法,是直线与圆锥曲线的综合问题,属于较难题。
【易错点】1(设直线l的方程为y?m(x?1),致使解法不严密。
2(不能正确运用韦达定理,设而不求,使得运算繁琐,最后得不到正确答案。 【解题思路】1(设出点的坐标,列出方程。 2(利用韦达定理,设而不求,简化运算过程。 3(根据圆的性质,巧用点到直线的距离公式求解。
【解析】(?)由题可知K??1,0?,抛物线的方程为y2?4x
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则可设直线l的方程为x?my?1,A?x1,y1?,B?x2,y2?,D?x1,?y1?, 故?
?x?my?1?y1?y2?4m2
整理得,故 y?4my?4?0?2
?y?4x?y1y2?4
2
?y2?y1y24?
则直线BD的方程为y?y2?x??x?x2?即y?y2???
x2?x1y2?y1?4?
yy
令y?0,得x?12?1,所以F?1,0?在直线BD上.
4
?y1?y2?4m2
(?)由(?)可知?,所以x1?x2??my1?1???my2?1??4m?2,
?y1y2?4
x1x2??my1?1??my1?1??1又FA??x1?1,y1?,FB??x2?1,y2?
故FA?FB??x1?1??x2?1??y1y2?x1x2??x1?x2??5?8?4m,
2
2
则8?4m?
??
??
7
84
,?m??,故直线l的方程为3x?4y?3?0或3x?4y?3?0 93
故直线
BD的方程3x?
3?0或3x?3?0,又KF为?BKD的平分线,
3t?13t?1
,故可设圆心M?t,0???1?t?1?,M?t,0?到直线l及BD的距离分别为54y2?y1?
?-------------10分 由
3t?15
?
3t?143t?121
? 得t?或t?9(舍去).故圆M的半径为r?
953
2
1?4?
所以圆M的方程为?x???y2?
9?9?
【举一反三】
【相似较难试题】【2014高考全国,22】 已知抛物线C:y2,2px(p0)的焦点为F,直线5
y,4与y轴的交点为P,与C的交点为Q,且|QF|,4(1)
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求C的方程;
(2)过F的直线l与C相交于A,B两点,若AB的垂直平分线l′与C相交于M,N两点,且A,M,B,N四点在同一圆上,求l的方程(
【试题分析】本题主要考查求抛物线的标准方程,直线和圆锥曲线的位置关系的应用,韦达定理,弦长公式的应用,解法及所涉及的知识和上题基本相同. 【答案】(1)y2,4x.
(2)x,y,1,0或x,y,1,0. 【解析】(1)设Q(x0,4),代入
y2,2px,得
x0,,
p
8
8pp8
所以|PQ|,|QF|,x0,,.
p22p
p858
由题设得,,p,,2(舍去)或p,2,
2p4p所以C的方程为y2,4x.
(2)依题意知l与坐标轴不垂直,故可设l的方程为x,my,1(m?0)( 代入y2,4x,得y2,4my,4,0. 设A(x1,y1),B(x2,y2), 则y1,y2,4m,y1y2,,4.
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故线段的AB的中点为D(2m2,1,2m), |AB|m2,1|y1
,y2|,4(m2,1)(
1
又直线l ′的斜率为,m,
所以l ′的方程为x,2m2,3.
m将上式代入y2,4x,
4
并整理得y2,,4(2m2,3),0.
m设M(x3,y3),N(x4,y4),
则y3,y4y3y4,,4(2m2,3)(
m
4
?22?
2故线段MN的中点为E?22m,3,,,
m??m
|MN|,
4(m2,12m2,1
1,2|y3,y4|,.
mm2
1
由于线段MN垂直平分线段AB,
1
10
故A,M,B,N四点在同一圆上等价于|AE|,|BE|,,
211
22从而,|DE|,2,即 444(m2,1)2,
??22?2?2
?2m,?,?22?,
m???m?
4(m2,1)2(2m2,1)
m4
化简得m2,1,0,解得m,1或m,,1, 故所求直线l的方程为x,y,1,0或x,y,1,0.
三、考卷比较
本试卷新课标全国卷?相比较,基本相似,具体表现在以下方面: 1. 对学生的考查要求上完全一致。
即在考查基础知识的同时,注重考查能力的原则,确立以能力立意命题的指导思想,将知识、能力和素质融为一体,全面检测考生的数学素养,既考查了考生对中学数学的基础知识、基本技能的掌握程度,又考查了对数学思想方法和数学本质的理解水平,符合考试大纲所提倡的“高考应有较高的信度、效度、必要的区分度和适当的难度”的原则( 2. 试题结构形式大体相同,即选择题12个,每题5分,填空题4 个,每题5分,解答题8个(必做题5个),其中第22,23,24题是三选一题。题型分值完全一样。选择题、填空题考查
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了复数、三角函数、简易逻辑、概率、解析几何、向量、框图、二项式定理、线性规划等知识点,大部分属于常规题型,是学生在平时训练中常见的类型(解答题中仍涵盖了数列,三角函数,立体何,解析几何,导数等重点内容。
3. 在考查范围上略有不同,如本试卷第3题,是一个积分题,尽管简单,但全国卷已经不考查了。
篇二:人教版初二英语听力
一、 听力部分:
I、 听录音,选出相应的图,把编号填在左边的括号里。(10分)
( )1.A. B. C.
( ) 2.B. C.
( )3.A. B.C.
( )4.A. B. C.
( )5.A. B.C.
II、 听录音,选出你所听到的选项,包编号填在括号里。(10分)
( )1.A. 11:50 B. 7:15C.7:35
( )2.A.the firstB. the second C.the third
( )3.A.write a letter B.write an letter C.write an e-mail
( )4.A.touch your noseB. touch your toes C.touch your
face
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( )5.A.There are many trees. B. There aren’t any trees.
C.They are many trees.
III.听录音,选出你所听到的句子的最佳应答,把答案填
在括号里。(10分) ()1.A.It’s Sunday.B. It’s sunny. C.It’
s nice.
()2.A. March .B.Wednesday . C.Fall.
()3.A.He usually swims. B. He likes summer. C.He’s
swimming. ()4.A. Yes,they are. B. Yes,they can. C.Yes,there is. ()5.A.In summer. B. On Aug. 10th.C.On Tuesday.
IV.听句子,填上所缺的单词。(10分)
1. John is catching__________.
2. Spring and fall are my favourite___________.
3. Is he________the_________?
4. We can_______ _________on a field trip.
5. Do you do morning ________at 8:30?
V.听对话,请根据对话内容选择问题的正确答案,并把编
号写在括号里。(10分)
( )1.What’s the date today?
A.Sept. 10th. B.Nov. 9th. C.It’s Sunday.
( )2.What’s John’s mother doing?
A.Answer the phone. B.Cooking dinner.C.Cleaning the
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room.
( )3.When does Amy usually eat breakfast?
A.At 6:30 am. B.At 7:00am. C.At 7:00pm.
( )4.What’s Lily’s favourite season?
A.Summer. B.Spring.C.Fall.
( )5.Are the classmates taking pictures?
A.Yes,they are.B.No,they aren’t.C.No,they don’t.
二、 笔试部分:
I、 选择填空。(20分)
()1.My mother’s birthday is ______Oct.
A.in B.onC.at
() 2. Can the ducks _______?
A. flyB. fliesC. flying
() 3.Are there _______ e-cards on the computer?
A a B an C /
()4. ________ is your favourite day? Sunday.
A What B Which C When
() 5.The_______day of the week is Wednesday.
A.second B thirdC fourth
()6. He’s _______trees over there.
A. playing B.plant C.pl(转载于:www.XltkWJ.Com 小
龙文档 网:人教初中英语mp3)anting
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()7. Can I take_________pictures?
A. some B. any C. a
( ) 8_________ your friends playing football?
A. IsB. Are C. Am
()9.I like winter______I can skate?
A.but B.and C.because
().10.Let’s go and help__________.
A.heB.hisC.him
II、 根据所给的中文情景提示,选出正确的答案。(10
分)
( )1.在电话中如何介绍你是陈洁:
A. I’m Chenjie.B.Are you Chenjie? C.This is Chenjie.
( )2.别人对你道谢,你应回答:
A. Thank you. B. I’m sorry. C. You’re welcome.
( ) 3. 你想知道对方什么时候去远足,你应问:
A.When do you go hiking? B. What are you go hiking?
C. What time are you go hiking?
( ) 4.你问对方见到熊猫吗,该问:
A. What do you see? B.Do you see any pandas?
B. I can see some pandas.
( ) 5.你想跟Mike通电话可以说:
A. Can I speak to Mike?B.There’s a call for Mike.
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C. Mike is speaking.
III、 根据中文意思提示,用单词的适当形式填空。(10
分)
1.The frog is________(跳) fast.
2.Is he _______ the ________(弹钢琴)?
3.Ant likes to________ _________(吃蜂蜜).
4.They are________ ________ _________(写报告).
5.Don’t_____ ______ _______(采摘树叶),please.
6.让我们一起做实验。
Let’s ________ _______ ___________together.
7.我经常在周末看望我的爷爷奶奶.
I often________ my __________on the weekends.
8.十二月是一年的最后一个月.
_________is the last mouth of the year.
9.山上有老虎吗?
Are there any tigers in the__________?
10.你们在打架?
Are you _________?
IV.补全对话。(10分)
1.A: I like summer ______.
B:_______?
A: It’s sunny.I can_____ in the sea._______ you? B:
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Winter.________I can make a snowman.
2.A:Hey!What are you ________?
B:I’m ________insects.
A: _______are your classmates now?
B:They are ______ the woods.
A:Are they having a _________?
篇三:初三人教版英语听力
1. If you want to _____ your work , you should use a computer so that you can finish it on time.
A. take upB. speed upC. make upD. pick up
2. The old man is very ____ about his life, even though he lived a hard life.
A. worriedB. optimisticC. crazyD. concerned
3. Though ____ money, his parents managed to send him to university.
A. lacked B. lacking ofC. lackingD. lacked in
4. All that the workers had done made a very good ____ on the manager.
A. expression B. impression C. instructionD. description
5. After having followed the thief for half an hour, they _____ him in a large store.
A. were in sight B. caught sight of C out of sightD. lost
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sight of
1.快速阅读
1)。What ’s the main idea of the passage?
It’s mainly about Li Qiang’s _________journey.
2)。Who is Li Qing?
2.True or False
1). I was very nervous although I have traveled several times.( )
2). Wang Ping owns a company named “Future Tours”.( )
3). Before the trip, we had a calming drink which made us sleep.( )
4). The air 1000 years later was as thick as today’s. ()
5). I lost sight of Wang Ping because there were too many carriages.()
我的疑问
探究案
1. Worried about the journey, I was unsettled for the first few days.
Worried about the journey是________________作
_______成分。
for the first few days意为___________________________
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2. As a result, I suffered from “ time lag”.
翻译:______________________________________
suffer from______________
辨析suffer与 suffer from
3.This is similar to the “jet lag” you get from flying ,but it
seams you keep getting flashbacks from your previous time period.
翻译:
_________________________________________________________________ be similar to_______________
造句:猫和虎在很多方面相似。
_____________________________________________
keep doing sth ______________
4. Well-known for their expertise, his parents’ company,
called “Future Tours”, transported me safely into the future
in a time capsule.
翻译:
_________________________________________________________________
(1) well-known_________________
(2) called “Future Tours”作_______________
5.Hit by a lack of fresh air, my head ached.
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翻译:_______________________________________
过去分词hit在句中作_____________,表示__________,
相当于一个原因状语从句
_______________________________________________________
6.I found later that their leaves provided the room with much-needed oxygen.
翻译:
____________________________________________________
provide____________________ 常用搭配:
________________________________ much-needed 是
________________ 短语作______________成分
7.Exhausted, I slid into bed and fell fast asleep.
Exhausted是_________词作_________语,表示
______________
fall fast asleep___________________
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人教初中英语单词
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