益阳初三调研卷答案（益阳2021初中毕业调研考试卷）

今天给各位同学分享益阳初三调研卷答案的知识，其中也会对益阳2021初中毕业调研考试卷进行解释，如果能碰巧解决你现在面临的问题，别忘了分享本站，现在开始吧！

本文目录一览：

• 1、初三英语教学质量调研试卷带答案
• 2、（2009?益阳）如图，将以A为直角顶点的等腰直角三角形ABC沿直线BC平移得到△A′B′C′，使点B′与C重合，
• 3、益阳市2013年普通初中毕业学业考试调研试卷标准答案
• 4、2018益阳中考数学试卷及答案解析
• 5、初三化学推断题
• 6、初三数学上期末调研测试卷及答案

初三英语教学质量调研试卷带答案

初三英语教学质量调研试卷

一、选择填空(共25小题;每小题1分，满分25分)

A)单项填空 从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

1. You can try_______ second time if you fail_______ first time.

A the; the B. a; the C. the; a D. a; a

2. --- We‘ll visit the Summer Palace_______ there is a heavy rain tomorrow.

--- OK ! Boating on the lake must be interesting.

A unless B. since C. until D. if

3. -- I will buy you a new bike if you learn how to swim this summer.

-- Is that a _______? I‘m sure I‘ll get the bike.

A. chance B. trick C. promise D. treat

4. --- The dish looked bad, but it_______ OK.

--- So it‘s not right to judge a man by his appearance.

A tastes B. was tasting C. was tasted D. tasted

5. --- No one_______ be compared with Messi in playing football.

--- Oh, you are really his big fan.

A. might B. could C. must D. can

6. There are a small number of people involved, possibly_______ ten

A as few as B. as little as C. as many as D. as much as

7. Arthur‘s memory starts to go wrong because of his age. So does_______.

A. I B. mine C. me D. myself

8. --- What do you often do_______ classes to relax yourselves?

--- We often do eye exercises, listen to music or do some running around the school.

A. in B. among C. between D. during

9. --_______ will you stay here?

--- Until tomorrow afternoon.

A How long B. How soon C. When D. How often

10. --- Did you watch the snooker game yesterday?

-- Yes, I did. Xiao Guodong is really a dark horse. Nobody _______ him to go so far.

A supposed B. hoped C. expected D. wanted

11. _______ a book in the library, enter a key word into the computer.

A To finding B. Finding C. Find D. To find

12. --- I‘m tired. I‘m taking next week off.

---_______, honey. You do need a break.

A. Not so sure B. Forget it C. Great idea D. No way

13. With the development of science and technology, news can be_______ to every corner of the world in seconds.

A put out B. sent out C. run out D. taken out

14. --- She‘s never spoken to a foreigner, _______?

--- Yes. She is active and can speak English freely.

A is she B. has she C. isn‘t she D. hasn‘t she

15. --- How soon will you start your journey?

--- I‘m not sure. I haven‘t decided_______.

A. when shall I ask the boss for leave

B. where I will go to spend the holiday

C. if I would go by train or by plane

D. who should I travel with

B)完形填空 先通读下面的短文，掌握其大意，然后在每小题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

While I was waiting to enter university, I saw an advertisement in a newspaper –a teaching job wanted at a school. The school was about ten miles from where I lived. I was in great 16 of money and wanted to do something useful, so I 17 .

Three days later, a letter arrived. It asked me to meet the principal of the school at Croydon. It proved to be a(n) 18 journey -a train to Croydon station, a ten-minute bus ride and then a walk of 19 a quarter of a mile.

A man who was short and round seemed to be the principal and he opened the door for me. 'The school,' he said, 'has a group of twenty-four boys between seven and thirteen years old.' According to the man, I should have to teach all the subjects 20 art, which the man himself taught. I should have to 21 the class into three groups and teach them at three different levels, and I was not glad at the 22 of teaching Maths -a subject which I wasn‘t good at. It was 23 that I had to teach them on Saturday afternoon because most of my friends would be 24 themselves at that time.

Before I had time to ask about my 25 ,the man got up to his feet. 'Now,' he said,“You‘d better meet my wife. She is the one who really runs this school.”

16.A. fear B. need C. danger D. control

17.A. applied B. arranged C announced D. accepted

18.A comfortable B. boring C short D. unpleasant

19.A at first B. at most C at least D. at last

20.A. besides B. except C including D. about

21.A. cut B. divide C turn D. gather

22.A. action B. way C movement D. thought

23.A. worse B. better C harder D. nicer

24.A helping B. believing C enjoying D. losing

25.A. fund B. value C. award D. pay

二、阅读理解(共15小题;每小题2分，满分30分)

阅读下列短文，从每小题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。

A

Once upon a time, an old woman had two large water pots. Each hung on the end of a pole(杆子)which she carried across her neck.

One of the pots had a crack in it while the other pot was perfect, From the river to the house, the cracked pot arrived only half full. And the other pot was always full. The perfect pot took pride in its talent. But the poor cracked pot felt sad for its own disadvantage.

One day by the river the cracked pot said to the woman, 'I feel bad about myself, because the crack in me causes water to come out all the way back to your house.”

The old woman smiled and said, 'Why are there flowers on your side of the road, but not on the other pot‘s side? That‘s because I have always known about your crack. So I planted flowers on your side of the road, and every day while we walk back, you water them. For two years I have been able to pick these beautiful flowers to decorate my house, There would not be this beauty without you. Each of us has our own cracks. But the cracks make our lives so interesting and beautiful.'

So, to all the cracked pot friends, have a great day and remember to smell the flowers on your side of the road!

26. If each of the two pots could be filled with 20 kilos of water, the woman would probably get _______ kilos of water from the river to the house.

A 10 B. 20 C. 30 D. 40

27. Which of the following is TRUE according to the passage?

A The woman preferred the perfect pot to the cracked pot.

B. The cracked pot felt more talented than the perfect pot.

C. There were beautiful flowers on both sides of the road.

D. The old woman decorated her house with some flowers.

28. What can we learn from the story?

A Everyone has a talent.

B. A true friend is hard to find.

C. Success never comes easily.

D. Mistakes improve our learning,

B

Have you ever had an embarrassing(尴尬的)experience? Last week we asked readers to tell us about embarrassing experiences. We received thousands of letters! Here is a selection.

Tony:

My most embarrassing experience happened when I had just left university. I had just started teaching in a Liverpool secondary school. One morning my alarm clock didn‘t ring. I woke up at half past eight and school began at nine. I quickly washed, dressed, jumped into my car and rushed to school. When I arrived, the students had already gone into class. I didn‘t go to the office, but went straight into class. After two or three minutes the students began laughing, and I couldn‘t understand why! Suddenly I looked down and understood. I had put on one black shoe and one brown shoe!

Henry:

The most embarrassing experience I‘ve ever had, happened two years ago. After seeing a film, my wife and I had lunch in our favourite restaurant in town. Then we decided to take a walk along the street. The street was very busy and we started holding hands. Suddenly my wife saw a dress that she liked in a shop window, and stopped. I started looking at some watches in the next window. After a minute or two I reached for my wife‘s hand. There was a loud scream, and a woman slapped my face. I hadn‘t taken my wife‘s hand. I‘d taken the hand of a complete stranger!

James:

My wife and I had decided to buy a new house, and I‘d made an appointment to see our bank manager. I‘d never met him before. I went into town in my car and I was lucky enough to find a parking space outside the bank. I‘d just started reversing(倒车) into the space when another car made its way into it. I was irritated! I opened my window and shouted at the man in the car. He ignored me and walked away. It took me twenty minutes to find another place. As soon as I had parked the car, I rushed back to the bank. I was ten minutes late for my appointment. I went to the manager‘s office, knocked and walked in. The manager was sitting behind his desk. He was the man who had taken my parking space!

29. The students began laughing when they saw Tony_______.

A. wearing a wrong shoe B. carrying an alarm clock

C. looking down suddenly D. rushing into the classroom

30. Henry was embarrassed because he_______.

A slapped the woman in the face

B. took the hand of a complete stranger

C. heard his wife screaming in the street

D. knocked over some watches in the shop

31. James went into town to_______.

A. put money in the bank B. look for a job

C. meet the bank manager D. buy a new car

32. The underlined word 'irritated' probably means '_______ '.

A. angry B. impolite C. worried D. embarrassed

C

Roosegaarde, an artist and designer from Dutch has thought of a device(装置). He hopes it will make Beijing‘s sky clear again and help the people with masks breathe fresh air again in Beijing.

An electromagnetic field(电磁场) will pull the dirty particles in the air to the ground, and then they can be easily cleaned.

Roosegaarde says, 'It‘s like when you have a balloon which has static electricity(静电) and your hair goes toward it. Smog happens the same way as the hair.'

His workplace has reached an agreement with the Beijing government to test the technology in one of the capital‘s parks. Beijing‘s skies are regularly covered by grey smog. Serious cases of air pollution are often reported in Beijing. Roosegaarde says an indoor test has already shown it works well and he is confident of the results. With the help of a team of scientists and engineers, he is sure that the device can be worked outside.

'Beijing is a very good place to test the device because the smog in Beijing is quite low and there‘s not so much wind.' says Roosegaarde. 'We‘ll be able to make the air pure but the most difficult thing is to remove the smog. As a result, you can see the sun again.'

Roosegaarde also reminds us that his aim is not only to give a plan to solve Beijing‘s dirty air pollution but also to make people pay attention to the environment problem. He adds, 'This is not the real answer for smog. The real answer to do with it is clean cars, different industry and different lifestyles. ' However, he hopes the project will make the citizens realize the differences between clean air and smog-filled air.

33. The device works by_______.

A helping keep the particles out with more masks

B. pulling particles to the ground with an electromagnetic field

C. absorbing hair with a balloon with static

D. creating clean air and letting it out into the sky

34. What does Roosegaarde use his device for?

A To make smog. B. To make the air clean

C. To make static electricity. D. To make Beijing‘s parks beautiful.

35. After reading the passage, we can know_______.

A the device doesn‘t work well indoors

B. the people with masks can breathe fresher air

C. Beijing government agreed to test the device

D. clean cars aren‘t helpful to the environment in Beijing

36. Roosegaarde hopes people in Beijing can_______.

A pay attention to air pollution and solve the problem finally

B. invent more devices to clean the smog in Beijing

C. drive modern cars and try different lifestyles

D. realize how serious the pollution they‘re facing is

D

According to scientists‘ research, the month in which babies are born could affect them in some ways.

Babies born in spring get sick easily. Children born under Aquarius may be less clever than those born in other seasons. They may also have shorter lives than those born in autumn Scientists believe many of the differences can be explained by the mother‘s exposure to sunlight in pregnancy(怀孕). Sunlight helps lead to the production of Vitamin D in the body. The lack of this in the first months of life may have a bad effect on mental and physical health.

Vitamin D, called the 'sunshine vitamin', is known to help regulate(调节) thousands of genes during development, according to a study of more than two million people. So Vitamin D has a good effect on health This study showed that people born from April to June had slightly shorter lives than those born in October, November or December. Similar studies in the USA showed that people born in autumn lived about 160 days longer than those born in spring.

Professor Russell Foster, an Oxford University neuroscientist on seasonal biology, said the conclusions were surprising and interesting. He added, 'These are small effects but they are very, very clear. I am not giving voice to star signs and they are just for fun. But it is true that we are affected by our season of birth.'

37.A baby‘s season of birth doesn‘t affect its_______.

A health B height C length of life D. mind

38. According to the passage,_______ can help people get Vitamin D.

A. enough sleep B. enough sunlight

C fresh air D. suitable seasons

39. Which of the following is TRUE according to the passage?

A. People born in spring may not be in good health.

B. Children born under Aquarius are cleverer than those born under Libra.

C. Professor Russell Foster is interested in star signs and believes in them

D. People born in May will live longer than those born in October.

40. What does the passage mainly tell us?

A. People can know the length of life by star sign.

B. Women should choose to give birth to children in spring.

C A child‘s season of birth has some effect on him or her.

D. Vitamin D is very important to people‘s health.

第II卷(非选择题，共45分)

三、单词拼写(共10小题;每小题1分，满分10分)

根据下列句子所给汉语注释或对话情景，在答题卡标有题号的'横线上，写出空缺处各单词的正确形式。每空限填一词。

41. It‘s doubtful ▲ (是否)there‘ll be any seats left or not.

42. The notice at the end of the road ▲ (警告)people not to go any further.

43. Hopefully, those climbers have covered ▲ (五分之四)of the distance.

44. The ▲ (热)in the room makes me uncomfortable,

45. Without enough sleep you can‘t work ▲ (正常地).

46. There seems to be a huge balloon ▲ (漂浮)across the sky.

47. As the curtain ▲ (上升)slowly, the audience fell silent.

48.---Judy, I guess you are only twenty-five years old, is that true?

---Oh, it‘s a ▲ .

49.-Could you please ▲ us with some new information about MH370?

-Of course. Anyway, it is a sad story.

50.---It will be my turn. I feel a little ▲ .

---Take it easy. You can make it.

四、句子翻译(共5小题;每小题3分，满分15分)

将下列句子译成英语，并将所译句子写在答题卡标有题号的横线上。

51.骑自行车环绕苏州是多么有乐趣啊!

52.他离开得如此匆忙，以至于忘了锁门。

53.别担心，你不久就会习惯他的幽默感。

54.你注意到我们教室的墙被涂成了白色吗?

55.用英语回答这个问题你有困难吗?

五、书面表达(共1题;满分20分)

一个民族有自己的“民族梦”，一个国家有自己的“国家梦”，同样，每个人也应有属于自己的“美丽梦想”。最近，你班就“我们的梦想职业”展开了一次调查。下表是你们小组的调查情况。请根据表格内容写一篇英语短文，向英语校刊投稿。

注意：1. 100词左右。短文的开头和结尾已给出，不计入总词数;

2.不得透露学校、姓名等任何个人信息;

3.可在必要处作适当发挥。

Our Dream Jobs

Recently we did a survey in our class in order to learn about students‘ ideal jobs. Here‘s a report about my group members‘ ideas.

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

初三英语教学质量调研试卷参考答案

（2009?益阳）如图，将以A为直角顶点的等腰直角三角形ABC沿直线BC平移得到△A′B′C′，使点B′与C重合，

解答：解：过A′作出A′D⊥BC′，垂足为D．在等腰直角三角形A′B′C′中，则A′D是底边上的中线，

∴A′D=B′D=

B′C′

2

．

∵BC=B′C′，

∴tan∠A'BC'=

A′D

BD

=

A′D

BC+B′D

=

1

3

．

故答案为：

1

3

．

益阳市2013年普通初中毕业学业考试调研试卷标准答案

益阳市2013年普通初中毕业学业考试生物(一)调研试卷标准答案 一`选择题 1.A 2.D 3.A 4.A 5.B 6.C 7.D 8.C 9.A 10.C 11.B 12.C 13.D 14.D 15.B 16.D 17.A 18.B 19.A 20.A 21.A 22.C 23.B 24.C 25.D

2018益阳中考数学试卷及答案解析

益阳2018年中考过后，相信不少中考考生和家长都比较关心数学试卷的答案和解析，以下是我整理的2018益阳中考数学试卷，供参考：

2018年益阳中考数学试卷及答案

更多湖南地区中考试题信息请点击 《2018湖南各市中考试卷及答案解析汇总》 !

中考成绩不理想有哪些出路

1、首先我们应该选择复读。我们知道考大学虽然很难，但是有很多好处，不仅可以增长知识，而且可以增加阅历，但是上大学必须考高中，所以还是建议孩子复读。

2、可以选择那种不用上高中就可以直接就读的学校，有一类职业技术学校是可以不用上高中就可以去的，可以去这些学校学点技术。

3、可以选择上一些技术学校，这样的话以后出来还会有一门手艺，可以干很多事情，有一技之长总比什么都不会的好。

4、可以资费学习一些现在比较紧缺的技术，现在对人才的需求很大，像动漫行业更是缺少人才，所以可以建议孩子学习这类的。

5、可以选择就读专科学校，我们知道现在的本科是可以函授的，而且也算学历的，所以可以先 读一点专科，以后再函授本科。

6、可以利用假期补补课。如果自己实在想考高中，可以利用假期好好补课，然后好好复读一年就可以考上高中了。

初三化学推断题

现有六种物质，它们按下列顺序排列1，CO；2，H2O；3，NH3；4，X；5，C2H4；6，P2O5，根据它们的组成和排列规律，推断X可能是（ ）

A，CH3OH B，CH4

C，FeO3 D，SO3

B

它是按原子数目来排的 4应该是5个原子的。

物质特征颜色

⑴ 固体颜色： 黑色：__________；红色：_______；绿色：________；蓝色：________。

⑵ 溶液颜色：蓝色：_______；浅绿色___________；黄色 _____________。

⑶沉淀颜色：白色 ___________________；蓝色 ___________；红褐色 _______________。不溶于稀硝酸的沉淀：_____________

物质特征现象

⑴碳酸盐能溶于盐酸或硝酸，并放出无色无味、能使澄清石灰水变浑浊的气体――CO2。

⑵滴加硝酸钡会产生沉淀，说明溶液中存在_____，滴加硝酸银会产生沉淀，说明溶液中存在____________

⑶能溶于盐酸或稀HNO3的白色沉淀有_______ ， _________；不溶于稀HNO3的白色沉淀有 ________，____________。

下面把初中化学中常见的题型及解法分述如下：

一、文字叙述型推断题

例1, 某固体混合物可能含有氯化镁、碳酸钙、硫酸铜、碳酸钾和硝酸钠中的一种或几种。现进行以下实验：

(1）将该混合物放入足量水中，得无色透明溶液；

(2)向(1)的溶液 中加入氢氧化钠溶液无明显现象；

(3)在上述(1)的溶液中加入盐酸，有气泡产生。

据上可推断原混合物中肯定有 ，肯定没有 ，可能有 。

用化学方程式表示上述实验中肯定发生的反应。

例2、某固体混合物可能含有氯化钾、碳酸钠、硫酸铜、硫酸钾和硝酸钡。现进行以下实验：（1）将该混合物放入足量水中，产生白色沉淀，得无色透明溶液；

（2）再加入足量的稀硝酸，沉淀全部溶解，逸出无色气体，所得溶液澄清透明；

（3）最后加入稀硫酸，又立刻出现白色沉淀。

据上可推断原混合物中肯定有 ，肯定没有 ，可能有 。用化学方程式表示上述实验中肯定发生的反应。

例3.有一包白色混合物，可能含有硫酸铜、硫酸钡、碳酸钠、氯化钙、硝酸钠、氯化钾中的一种或几种，现做如下实验：

①将混合物放入足量水中，得到无色透明液体

②在上述溶液中加入盐酸，有气泡产生

③在完全反应后的②中滴入硝酸银溶液，有白色沉淀生成。

则原混合物中一定有： 混合物中一定没有 ，可能含有 。

肯定发生的化学方程式是：（1） （2）

练习：1,有一包固体粉末，可能由碳酸钙、硫酸钾、硝酸钠、氯化铁、氯化钡中的一种或几种组成，做实验得到以下结论：

（1） 将此固体粉末加到水中，得到白色沉淀，上层溶液为无色。

（2） 该白色沉淀部分溶于稀硝酸，且有气体放出。

从实验可判断出，该粉末中一定含有＿＿＿＿，一定不含有＿＿＿＿。

2,有一包固体粉末, 可能含有炭粉、氧化铜、氧化铁、碳酸钙中的一种或几种。进行如下实验： ①取样, 加热至高温产生一种气体, 该气体能使澄清的石灰水变浑浊。②把适量稀盐酸滴入冷却后的固体残渣中, 残存固体全部溶解, 同时产生一种可燃性气体。试推断：

(1) 该固体粉末中一定含有 , 一定没有 。

(2) 该固体粉末中可能含有 , 为证实该物质是否存在, 可选用的试剂是 。

3. 有一包白色固体，可能含有氯化钡、硝酸钾、硫酸铜、氯化钠、碳酸钠、硫酸钠中某几种。（1）取该固体混合物溶于水，有白色沉淀生成，经过滤，得到无色滤液；（2）在白色沉淀中加稀硝酸，沉淀部分溶解；（3）在滤液中滴入硝酸银溶液，生成不溶于稀硝酸的白色沉淀。由此可见：

①混合物中一定有 ；肯定没有 ，可能有 。

②写出（1）（2）反应中的化学方程式：________________________________

4, 有一混合气体由HCl、CO、H2、H2O、CO2组成，将其依次通过①足量氢氧化钠溶液，②浓硫酸，③灼热氧化铜后，剩余气体是 （ ）

A、没有气体剩余 B、只有CO2剩余 C、只有H2O 剩余 D、H2O和CO2

5,有一气体可能有CO、CO2、H2、HCL气体的混合物，依次通过（1）澄清的石灰水时无沉淀，（2）通过灼热的氧化铜，黑色粉末变红但无水出现。将剩余气体通过澄清石灰水时，有白色沉淀生成。由此可见：①混合物气体中一定有： ；肯定没有：

6，甲乙两车间的废水中含有Na+、Ag+、Cu2+、CO32-、OH-、NO3- 六种离子：

（1）乙车间的废水呈蓝色，其中的阴离子 为 _______,如果加入足量的铁可以回收的金属有______；

(2)甲车间的废水含有的三种离子是_________；

(3)如果将甲乙两车间的废水混合,可以使废水的某些离子转化为沉淀,经过滤后的废水中含有_______；

(4)写出检验其中一车间废水中含有OH-的方法。

二、 方程式叙述型推断题

例2：已知A、B、C、D、E、F6种物质的转化关系如下：

(1)A+B→C+H2O (2)C+KOH→D↓(蓝色)+E (3)B+D→C+H2O (4)E+BaCl2→F↓(白色，不溶于稀硝酸)+KCl

根据上述变化关系，推断有关物质的化学式：

A ________；B _______；C _______；D________ ；E __________；F _________。

练习：

1,有属于酸、碱、盐的5种常见物质A、B、C、D、E，它们之间可以发生如下反应：

（1）A+B→C+H2O (2)C+H2SO4→D↓+A （3）E+AgNO3→AgCl↓+C

根据上述反应，推断下列各物质的化学式：

A________；B________；C_______；D________；E ____________。

2,（2005 湖南益阳）A、B、C、D是常见的化合物，A中含有钾元素。他们之间的转化关系如下：

①2A+B=C+2H2O ②C+D=BaSO4↓+2A ③D+CuSO4= BaSO4↓+Cu(OH)2↓

根据以上信息，推断A、B两物质化学式：A B

初三数学上期末调研测试卷及答案

对于初三数学期末考试的复习,制定计划做数学试题更有利于数学的学习和备考。

初三数学上期末调研测试卷

一、选择题(本题共有12小题，每小题3分，共36分，每小题有四个选项，其中只有一个是正确的)

1.sin60°的值是

A. B. C.1 D.

2.图1是一个球体的一部分，下列四个选项中是它的俯视图的是

3.用配方法解方程 ，下列配方正确的是

A. B.

C. D.

4.图2是我们学过的反比例函数图象，它的函数解析式可能是

A. B. C. D.

5.如图3，已知∠BAD=∠CAD，则下列条件中不一定能使

△ABD≌△ACD的是

A.∠B=∠C B.∠BDA=∠CDA

C.AB=AC D.BD=CD

6.过某十 字路口的汽车，它可能继续直行，也可能向左或向右转.若这三种可能性大小相同，则两辆汽车经过该十字路口全部继续直行的概率为

A. B. C. D.

7.矩形具有而菱形不具有的性质是

A.对角线互相平分 B.对角线互相垂直

C.对角线相等 D.是中心对称图形

8.关于二次函数 ，下列说法中正确的是

A.它的开口方向是向上 B.当x –1时，y随x的增大而增大

C.它的顶点坐标是(–2，3) D.当x = 0时，y有最小值是3

9.如图4，已知A是反比例函数 (x 0)图象上的一个

动点，B是x轴上的一动点，且AO=AB.那么当点A在图

象上自左向右运动时，△AOB的面积

A.增大 B.减小 C.不变 D.无法确定

10.如图5，已知AD是△ABC的高，EF是△ABC的中位线，

则下列结论中错误的是

A.EF⊥AD B.EF= BC

C.DF= AC D.DF= AB

11.某公司今年产值200万元，现计划扩大生产，使今后两年的产值都比前一年增长一个相同的百分数，这样三年(包括今年)的总产值就达到了1400万元.设这个百分数为x，则可列方程为

A.

B.

C.

D.

12.如图6，已知抛物线 与x轴分别交于A、B两点，顶点为M.将抛物线l1沿x轴翻折后再向左平移得到抛物线l2.若抛物线l2过点B，与x轴的另一个交点为C，顶点为N，则四边形AMCN的面积为

A.32 B.16 C.50 D.40

第二部分(非选择题，共64分)

二、填空题(每小题3分，共12分。)请把答案填在答题卷相应的表格里。

13.2011年深圳大运会期间，在一个有3000人的小区里，小明随机调查了其中的500人，发现有450人看深圳电视台的大运会晚间新闻.那么在该小区里随便问一人，他看深圳电视台的大运会晚间新闻的概率大约是答案请填在答题表内.

14.若方程 的一个根为1，则b的值为答案 请填在答题表内.

15.如图7，甲、乙两盏路灯相距20米，一天晚上，当小刚

从灯甲底部向灯乙底部直行16米时，发现自己的身影顶

部正好接触到路灯乙的底部，已知小刚的身高为1.6米，

那么路灯甲的高为答案请填在答题表内米.

16.如图8，四边形ABCD是边长为2的正方形，E是AD边上一点，将△CDE绕点C沿逆时针方向旋转至△CBF，连接EF交BC于点G.若EC=EG，则DE = 答案请填在答题表内.

三、解答题(本题共7小题，共52分)

17.(本题 5分)计算：

18.(本题5分)解方程：

19.(本题8分)如图9，等腰梯形ABCD中，AB//CD，AD = BC = CD，对角线BD⊥AD，DE⊥AB于E，CF⊥BD于F.

(1)求证：△ADE≌△CDF;(4分)

(2)若AD = 4，AE=2，求EF的长.(4分)

(1)转动该转盘一次，则指针指在红色区域内的概率为_______;

(2分)

(2)转动该转盘两次，如果指针两次指在的颜色能配成紫色(红

色和蓝色一起可配成紫色)，那么游戏者便能获胜.请用列

表法或画树状图的方法求出游戏者能获胜的概率.(6分)

21.(本题8分)如图11，A、B、C是三座城市，A市在B市的正西方向.C市在A市北偏东60º的方向，在B市北偏东30º的方向.这三座城市之间有高速公路l1、l2、l3相互贯通.小亮驾车从A市出发，以平均每小时80公里的速度沿高速公路l2向C市驶去，3小时后小亮到达了C市.

(1)求C市到高速公路l1的最短距离;(4分)

(2)如果小亮以相同的速度从C市沿C→B→A的路线从高速公路返回A市.那么经过多长时间后，他能回到A市?(结果精确到0.1小时)( )(4分)

22.(本题9分)阅读材料：

(1)对于任意实数a和b，都有 ，∴ ，于是得到 ，当且仅当a = b时，等号成立.

(2)任意一个非负实数都可写成一个数的平方的形式。即：如果 ，则 .如：2= ， 等.

例：已知a 0，求证： .

证明：∵a 0，∴

∴ ，当且仅当 时，等号成立。

请解答下列问题：

某园艺公司准备围建一个矩形花圃，其中一边靠墙(墙足够长)，另外三边用篱笆围成(如图12所示).设垂直于墙的一边长为x米.

(1)若所用的篱笆长为36米，那么：

①当花圃的面积为144平方米时，垂直于墙的一边的长为多少米?(3分)

②设花圃的面积为S米2，求当垂直于墙的一边的长为多少米时，这个花圃的面积最大?并求出这个最大面积;(3分)

(2)若要围成面积为200平方米的花圃，需要用的篱笆最少是多少米?(3分)

23(本题9分)如图13-1，已知抛物线 (a≠0)与x轴交于A(–1，0)、B(3，0)两点，与y轴交于点C(0，3).

(1)求抛物线的函数表达式;(3分)

(2)若矩形EFMN的顶点F、M在位于x轴上方的抛物线上，一边EN在x轴上(如图13-2).设点E的坐标为(x，0)，矩形EFMN的周长为L，求L的最大值及此时点E的坐标;(3分)

(3)在(2)的前提下(即当L取得最大值时)，在抛物线对称轴上是否存在一点P，使△PMN沿直线PN折叠后，点M刚好落在y轴上?若存在，请求出所有满足条件的点P的坐标;若不存在，请说明理由.(3分)

初三数学上期末调研测试卷答案

一、选择题(每小题3分，共36分)

BCBAD ACBCD DA

二、填空题(每小题3分，共12分)

13.0.9; 14. 4 ; 15. 8 ; 16.

三、解答题

17.解：原式 = 2分(每写对一个函数值得1分)

= 3–1 4分(每算对一个运算得1分)

= 2 5 分

18.解法一：移项得 1分

配方得

2分

即 或 3分

∴ ， 5分

解法二：∵ ， ，

∴ 1分

∴ 3分

∴ ， 5分

解法三：原方程可化为 1分

∴x–1 = 0或x–3 = 0 3分

∴ ， 5分

19.(1)证明：∵DE⊥AB，AB//CD

∴DE⊥CD

∴∠1+∠3=90º 1分

∵BD⊥AD

∴∠2+∠3=90º

∴∠1=∠2 2分

∵CF⊥BD，DE⊥AB

∴∠CFD=∠AED=90º 3分

∵AD=CD

∴△ADE≌△CDF 4分

(2)解：∵DE⊥AB，AE=2，AD=4

∴∠2=30º，DE= 5分

∴∠3=90º–∠2=60º

∵△ADE≌△CDF

∴DE=DF 6分

∴△DEF是等边三角形

∴EF=DF= 7分

(注：用其它方法解答的，请根据此标准酌情给分)

20.(1) 2分

红 黄 蓝

红 (红，红) (黄，红) (蓝，红)

黄 (红，黄) (黄，黄) (蓝，黄)

蓝 (红，蓝) (黄，蓝) (蓝，蓝)

(2)解：列表得

结果共有9种可能，其中能成紫色的有2种

∴P(获胜)=

(说明：第(2)小题中，列表可画树状图得4分，求出概率得2分，共6分)

21.(1)解：过点C作CD⊥l1于点D，则已知得 1分

AC=3×80=240(km)，∠CAD=30º 2分

∴CD= AC= ×240=120(km)3分

∴C市到高速公路l1的最短距离是120km。4分

(2)解：由已知得∠CBD=60º

在Rt△CBD中，

∵sin∠CBD=

∴BC= 5分

∵∠ACB=∠CBD–∠CAB=60º–30º=30º

∴∠ACB=∠CAB=30º

∴AB=BC= 6分

∴t = 7分

答：经过约3.5小时后，他能回到A市。8分

(注：用其它方法解答的，请根据此标准酌情给分)

22.(1)解：由题意得 1分

化简后得

解得： ， 2分

答：垂直于墙的一边长为6米或12米。 3分

(2)解：由题意得

S = 4分

= 5分

∵a =–20，∴当x = 9时，S取得最大值是162

∴当垂直于墙的一边长为9米时，S取得最大值，最大面积是162m2。6分

(3)解：设所需的篱笆长为L米，由题意得

7分

即： 8分

∴若要围成面积为200平方米的花圃，需要用的篱笆最少是40米，9分

23.(1)解：由题意可设抛物线为 1分

抛物线过点(0，3)

解得：a =–1 2分

抛物线的解析式为：

即： 3分

(2)解：由(1)得抛物线的对称轴为直线x = 1

∵E(x，0)，

∴F(x， )，EN = 4分

∴

化简得 5分

∵–20，

∴当x = 0时，L取得最大值是10，

此时点E的坐标是(0，0) 6分

(3)解：由(2)得：E(0，0)，F(0，3)，M(2，3)，N(2，0)

设存在满足条件的点P(1，y)，

并设折叠后点M的对应点为M1

∴ NPM=NPM1=90，PM=PM1

PG = 3–y，GM=1，PH = | y |，HN = 1

∵∠NPM=90º

∴

∴

解得： ，

∴点P的坐标为(1， )或(1， )7分

当点P的坐标为(1， )时，连接PC

∵PG是CM的垂直平分线，∴PC=PM

∵PM=PM1，∴PC=PM=PM1

∴∠M1CM = 90º

∴点M1在y轴上8分

同理可得当点P的坐标为(1， )时，点M1也在y轴上9分

故存在满足条件的点P，点P的坐标为(1， )或(1， )

(说明：能正确求出一个点的坐标并能说明点M刚好落在y轴上，得2分)

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