当前位置：文档库 › 北京市海淀区2020届九年级上学期期中考试英语试题

北京市海淀区2020届九年级上学期期中考试英语试题

海淀区九年级第一学期期中练习

英语2020.11

一、听对话，从下面各题所给的A、B、C三幅图片选项与对话内容相符的图片。每段对话你将听两遍。（共4分，每小题1分）

二、听对话或独白，根据对话或独白的内容，从下面各题所给的A、B、C三个选项中选择最佳选项。每段对话或独白你将听两遍。（共12分，每小题1分）

5. What’s in the backpack?

A. A notebook.

B. A pencil box.

C. A hair hand

6. Whose backpack could it be?

A. Jack’s

B. Lily’s

C. Maria’s

请听一段对话，完成第7至8小题。

7. What is John doing now?

A. Watching TV.

B. Doing homework.

C. Playing baseball.

8. What does John hate?

A. The shows.

B. The rules

C. The games.

请听一段对话，完成第9至10小题。

9.How long will the holiday be?

A. Two days.

B. Three days.

C. Four days.

10. What is Tina going to do during the holiday?

A. Go hiking and camping.

B. Go to the beach.

C. Visit the museum.

请听一段对话，完成第11至13小题。

11. When is the party?

A. Next Sunday evening.

B. Next Saturday evening.

C. Next Friday evening.

12. What will the boy probably wear for the party?

A. A shirt and tie.

B. A suit and shirt.

C. A suit and tie.

13. What can we know about the boy?

A. He has no friends.

B. He needs more time.

C. He wants some advice.

请听一段对话，完成第14至16小题。

14. How can you join the team?

A. By joining a party on Saturdays.

B. By joining a group on Facebook.

C. By joining games on the Internet.

15. Which game is not talked about?

A. Guessing game.

B. Spelling game.

C. Dancing game.

16. What does the speaker want to do?

A. To tell us about a competition.

B. To introduce a competition team.

C. To encourage us to win the game.

三、听对话，根据所听到的对话内容和提示词语，将所缺的关键信息填写在答题卡的相应位置上。对话你将听两遍。（共10分，每小题2分）

知识运用

四、单项填空（共13分，每小题1分）

从下面各题所给的A、B、C、D四个选项中，选择可以填入空白处的最佳选项。

22. My teacher always tells reading is helpful.

A. I

B. me

C. my

D. mine

23. I usually go shopping with my mother Sundays.

A. in

B. to

C. at

D. on

24.－What is Jenny like, outgoing shy?

－I think she is outgoing.

A. but

B. and

C. or

D. so

25. Larry is growing fast. Now he is even than his father.

A. tall

B. taller

C. tallest

D. the tallest

26.－ we bring drinks and snacks into the concert?－No, you can’t.

A. Can

B. May

C. Must

D. Need

27. is in the classroom. They are all on the playground.

A. Everybody

B. Somebody

C. Anybody

D. Nobody

28. I really miss my friend Kathy. She to another city last year.

A. moves

B. moved

C. is moving

D. has moved

29.－do you go to the library? －About twice a month.

A. How far

B. How long

C. How much

D. How often

30.Mr. Smith, a famous scientist, Beijing Garden Expo Parks next Thursday.

A. visits

B. visited

C. will visit

D. was visiting

31. The doctor asked me more fruit and vegetables to keep healthy.

A. to eat

B. eating

C. ate

D. eat

32.They a lot of people since they became volunteers in 2010.

A. help

B. helped

C. will help

D. have helped

33. Flowers in my classroom every week.

A. water

B. watered

C. are watered

D. were watered

34. I don’t remember my new glasses yesterday.

A. where I put

B. where did I put

C. where I will put

D. where will I put

五、完形填空（共12分，每小题1分）

阅读下面的短文，掌握其大意，然后从短文后各题所给的A、B、C、D四个选项中，选择最佳选项。

My favorite class at school was dance class. It was a new experience for me. At first, I didn’t think I’d like it, but I decided to give it a chance.

To begin with, it was 35 to have to hold with a boy and dance. The steps were okay, and the music was okay, but boys were not really okay. The teacher was nice and funny, and she got us used to working together as a 36 .

Then it wasn’t so strange working with a partner any more.

As the lessons 37 and I learned new dances like waltz(华尔兹), I really began to enjoy myself. Even being with partners wasn’t bad. In fact, I started enjoying dancing with partners who tried hard and know our steps. Some of the boys thought it was a 38 . And they didn’t take it seriously. I hated dancing with them, but I politely took my turn with them anyway.

To be a proper lady was another thing I learned while I was dancing. I never thought much about it before, but the teacher expected me to 39 like a lady, which meant I had to accept dance partners politely 40 I didn’t like them. Just like life, you sometimes have to do things you don’t want to, the teacher 41 . Yet, that didn’t mean I didn’t enjoy dancing with a boy who had the proper height and good steps to be a great partner.

As the classes neared their end, I was happy to hear I’d been 42 as a finalist. That meant I and my partner, Todd, would be representing my school and going dancing at a competition.

The competition was like 43 out of a storybook. Everyone was smiling, wearing great clothes, and hair was done nicely. It was hard not to be 44 , but it was hard not to feel special, too. Todd and I, along with my teammates, 45 our way through the competition. It was hard, and all the other dancers were so good!

It was sad not to win the competition, but a third place finish was 46 . Maybe next year our dancers would come in first place. I was proud I learned a lot. I just know I loved to dance, especially the waltz.

35. A. different B. difficult C. common D. strange

36. A. class B. club C. team D. task

37. A. went on B. went by C. came over D. came back

38. A. joke B. step C. lesson D. chance

39. A. look B. learn C. behave D. practice

40. A. as if B. so that C. ever since D. even though

41. A. agreed B. smiled C. replied D. explained

42. A. tested B. chosen C. known D. regarded

43. A. something B. everything C. anything D. nothing

44. A. surprised B. excited C. nervous D. serious

45. A. continued B. danced C. found D. took

46. A. comfortable B. acceptable C. reasonable D. enjoyable

阅读理解（共44分）

六、阅读下列短文，根据短文内容，从短文后各题所给的A、B、C、D四个选项中，选择最佳选项。

（共26分，每小题2分）

47. How many posts are there in the blog?

A. Three.

B. Four

C. Five

D. Six

48. What does Mary think of homework?

A. She likes it a lot.

B. She cares about it.

C. She doesn’t like it.

D. She doesn’t mind it.

49. Sarah is a .

A. parent

B. writer

C. student

D. teacher

When buster was brought into the animals' home, he was wet and smelly. But Jimmy who worked there know what soap and water and a good brushing could do.

After a bath, Jimmy put Buster in a cage and gave him some food and fresh water. Buster wanted a home. He wanted a family. He wanted a yard. Most of all, he wanted someone to love him.

A man came over to the cage. Buster curled up on his blanket and closed eyes. “He’s no fun,” said the man. “He’s too quiet.”

A family came along. Buster barked and barked, so they would notice him. “ He’s too noisy,” said the mother. They all walked away.

Other people passed by.

“Too furry.”

“TOO bony.”

“Don’t give up,” Jimmy said to Buster. “Someone will want you.”

Another family asked Jimmy to take Buster out of the cage. “He’s too big,” said the mother. “He might scare the baby.”

The next family came along. “He’s too small,” said the father. “He wouldn’t be a good watchdog.”“Sorry, Buster,” said Jimmy.

At the end of the day, another family came along-a mother, father, and a boy. Buster didn’t try to book big or small. He didn’t worry about looking furry or bony. He was just plain Buster, an ordinary, brown, medium-sized dog.

The boy looked in to Buster’s brown eyes. Buster looked into the boy’s blue eyes. “Look, Mom,” he said. “This dog is just the right size for me.”

Buster went home to a family and a yard. Best of all, He went home with someone who loved him just the way he was- an ordinary, brown, medium-sized dog.

50. What did Buster get first at the animals’ home?

A. A bath.

B. A ball.

C. A rest

D. A meal.

51. What did Buster want most of all?

A. A place to play in.

B. A home to live in.

C. A loving owner.

D. A rich keeper.

52. What does the writer want to tell us in this story?

A. We must do everything well.

B. It’s nice to keep a dog.

C. We should be just what we are.

D. It’s easy to clean a dog.

Do you believe that there might be life on other planets? Would you like to

be the first “Earthling” to get in touch with an alien? Well, you can start your

search from home. All you need is a computer and the Internet, and you can

join the project of the US-based National Aeronautics and Space

Administration(NASA).

NASA started the Search for Extra-Terrestrial Intelligence (SETI) project

eight years ago. Its goal is to examine the radio signals (信号) from nearby

stars. Researchers believe that a large number of stars in the universe could

have planets orbiting (circling) around them. And they want to know if these

planets have conditions suitable for life forms.

How does the project work? There is a huge radio telescope with a large bowl-shaped dish at Arecibo, Puerto Rico. It catches radio signals which are then fed in to SETI computers. The researchers have to study thousands of radio signals daily. They are looking for signals whose patterns (模式）would show the existence（存在）of hydrogen or water molecules that are necessary for life on Earth. They could be at it for years before showing a single positive result!

Of course, even the researchers know that they cannot do a fast job on their own. So they want as many helpers as possible. Even you ! To join search, just download SETI’s free software (SETI @home). What happens next is fun. While you are away from your computer, the SETI program in your computer

downloads the information on radio signals received by the radio telescope. It studies the information and send the result back to the research center.

There are other benefits too of having the SETI project software in your computer. When you leave your computer unattended, instead of seeing the usual screen saver, you can feast

your eyes on an amazing 3-D chart on the screen. This shows that your computer

is busy studying SETI data and searching for signs of alien life!

More than 1824500 people around the world are currently in the program

and more are joining in every day. It’s slim chance, but wouldn’t it be fantastic if

your computer were to be the first to discover an alien signal!

53. Why do researchers examine the radio signals from nearby stars?

A. They plan to help people who live on the stars.

B. They need to make sure that the stars have planets.

C. They have to keep in touch with the aliens on the stars.

D. They wonder if the stars’ planets are suitable for life forms.

54. What does a helper’s computer do in the research?

A. It finds the radio signals.

B. It looks for other planets.

C. It shows a positive result.

D. It studies the information.

55. What’s the writer’s purpose in writing the passage?

A. To prove the value of a research.

B. To invite people to join a project.

C. To suggest the existence of aliens.

D. To advise people to study planets.

In all the world’s cultures, people sing, play instruments, and celebrate with

music. It plays such an important role in our lives that whole fields work hard at

its study, including one looking at the biology of music. Experts are finding that

because of the way our brains process(处理) music, learning to play an

instrument or just listening to music can have a wide range of benefits.

Music education has received a lot of attention. Learning to play an

instrument can help children improve math, science, and language skills. One

study in Canada tracked （追踪）children’s IQ scores for nine months,

discovering that children who studied music had the biggest test score improvements. The secret may lie in the way reading music and playing notes uses several areas of the brain, helping develop our ability to learn school subjects.

Music is also used for medical purposes, such as the treatment of diseases which affect memory. Scientists explain that one area near the forehead connects music with memories. That’s why an old song can remind you of something that happened years ago. For patients suffering from certain diseases, listening to music can help unlock memories by building up musical pathways to memories.

Studies of the music-brain connection often concentrate on classical music, since it activates both the left and right sides of brains. One study found the brain activity was the highest during the short breaks between the movements of a piece of music. During each break, the person’s brain predicted what would come next, while organizing what he had just heard. This process is similar to the way our brain organizes information. It may explain why classical music can help improve memory. Some people take the music- brain connection to another level by listening to personalized “brain music.” which can help a person concentrate and prepare for a difficult task.

It’s amazing how attuned our brains are to music. Some scientists even think we’re born with the

ability to learn music, just as we all have the skills to learn language. After all, children without any training often make up songs while playing. With the evidence of music’s benefits pouring in, it’s no wonder some countries make music study a part of their education systems. People are realizing that music is more than just a form of entertainment.

56. In the study in Canada, who had the biggest IQ score increase?

A. The children who did well in science.

B. The children who had good memories.

C. The children who had fun learning languages.

D. The children who studied music for some time.

57. The writer probably agrees that .

A. we get a lot from teaching children to make up songs.

B. it takes steps to make full use of music-brain connection.

C. memory can be improved by training to organize information

D. music treatment helps build up unlocked pathways to memories

58. What does the underlined sentence in the last paragraph mean?

A. It’s great that our brains go well with music.

B. It’s wonderful for us to listen to brain music.

C. It’s surprising that music makes our brains active.

D. It’s fantastic to know how brains work with music.

59. What may be the best title for the passage?

A. Music and Memory

B. Music and the Mind

C. The Biology of Music

D. The Benefits of Music

七、阅读短文，根据短文内容，从短文后的五个选项中选出能填入空白处的最佳选项。选项中有一

项为多余选项。（共8分，每小题2分）

Adopt a Highway

Hello. I’m Jane. My class wants to work together to help the community. 60 This program brings people together to pick up little along the roads. We think it would be a great idea for students to join the program and adopt a highway.

Adopting a highway is not like adopting a pet. When a highway is adopted, only part of the highway is cared for by a group of people. 61 Each group gets its own sign that has the name of the group printed on it. The sign is put up alongside the road. This sign lets drivers know who is keeping that area of the road clean.

The program is a great way for people to help their community look nicer. 62 This saves money. Finally, people may try harder to keep roads clean.

63 If you want to feel great and keep our roads clean, please come with your parents to the meeting

八、阅读短文，根据短文内容回答问题。（共10分，每小题2分）

When we want to find out what the weather will be like tomorrow, we usually turn on the TV. But

people also needed to forecast (predict) the weather before they had TV. How did they do it in the past? They’d find an outdoor space, look up, look around, and listen.

Look UP

Red sky at night, sailor’s delight!

Red sky in the morning, sailors take warning!

This weather poem was written a long time ago, but it still works today.

Weather in many parts of the wold moves from west to east. Whatever weather is

in the weat tonight will probably be with us tomorrow. So a red sky at night, as the

sun is setting, usually means a sunny day for the next day.

Look Around

Animals, insects, and plants are natural weather forecasters.

When a summer storm is coming , you may notice that dogs, cows and horses grow restless. Theses animals don’t have some mysterious sixth sense, but they do have super-sensitive

hearing. Scientists think the animals can forecast thunderstorms （雷雨）because they

can hear the sound waves(声波)made by them many miles away.

When leaves show their undersides, be very certain, rain happens.

Listen

If you hear a cricket, it can tell you the exact temperature. Just count its chirps (啾啾声) for fourteen seconds and then add forty. This will give you the Fahrenheit temperature of the cricket within a very few degrees. Since crickets are cold-blooded, the temperature of the cricket is about

the same as the air around it.

So learn to predict the weather the way people did in the past. Get outside,

look up, look around, and listen. Soon you’ll be your very own weather

forecaster.

64. Did people need to forecast the weather before they had TV?

65. What does a red sky at night mean for the next day?

66.Why can animals forecast thunderstorms?

67.How can we know the temperature from a cricket?

68. What does the passage mainly tell us?

书面表达（共25分）

九、完成句子（共10分，每小题2分）

根据中文意思完成句子。

69. 为什么不给露西提点建议呢？

Give Lucy some suggestions?

70. 别再熬夜了，否则你明天上学会迟到的。

Don’t stay up any more, or you will school tomorrow.

71. 对大多数孩子来说，这个故事太长了，一周内读不完。

For most children, the story is finish in a week.

72. 你最好想出一个解决此问题的新方法。

a new solution to the problem.

73. 为了实现梦想，我们在学业上花足够的时间很有必要。

It’s our dreams.

十、文段表达（15分）

根据中文大意和英文提示词语，写出意思连贯、符合逻辑、不少于60词的短文，所给英文提示词语仅供选用，请不要写出你的校名和姓名。

74. 进入初三后，学习越来越忙，娱乐时间相应减少。请根据表格中的提示内容，简单描述这种变

海淀区九年级第一学期英语期中练习参考答案

2020.11

听力理解（共26分）

一、听对话选图。（共4分，每小题1分）

1. A

2. B

3. C

4. A

二、听对话或独白，选择答案。（共12分，每小题1分）

5. C

6. B

7. A

8. B

9. B 10. A 11. C 12. A 13. C 14. B 15. C 16. A

三、听对话，记录关键信息（共10分，每小题2分）

17. Green 18. Monday 19. 1589 20. 8:30 21. Pets

知识运用（共25分）

四、单项填空（共13分，每小题1分）

22. B 23. D 24. C 25. B 26. A 27. D 28. B 29. D 30. C

31. A 32. D 33. C 34. A

五、完形填空（共12分，每小题1分）

35. D 36. C 37. A 38. A 39. C 40. D 41. D 42. B 43. A 44. C 45. B 46. B

阅读理解（共44分）

六、阅读短文，选择最佳选项。（共26分，每小题2分）

47. B 48. C 49. A 50. A 51. C 52. C 53. D 54. D 55. B 56. D 57. C

58. A 59. B

七、阅读短文，还原句子。（共8分，每小题2分）

60. D 61. B 62. C 63. E

八、阅读短文，回答问题。（共10分，每小题2分）

64. Yes. / Yes, they did.

65. It means a sunny day for the next day. / It means the next day is sunny.

66. Because they can hear the sound waves.

67. By listening to its chirps. / By counting its chirps (for fourteen seconds).

68. We can predict the weather by looking up, looking around and listening.

/ We can know the weather from outdoor things.

/ Some ways to predict weather. / Some ways of predicting weather.

/ How to predict weather.

书面表达（共25分）

九、完成句子（共10分，每小题2分）

69. Why don’t you / Why not

70. be late for

71. too long to / so long that they can’t

72. You’d better come up with / think up

73. (very) necessary for us to spend enough time on schoolwork / study to / in order to achieve /

realize

十、文段表达（共15分）

74. One possible version:

Ever since I became a student in Grade Nine, my life has changed a lot. I’m pretty busy now. I used to go out with friends and have time for fun, but now I have to go right home and do my homework. Also I have to take after-school classes to improve my math.

However, I manage to balance my study and relaxations. After a busy and tiring day, I enjoy listening to music for a while in order to study effectively. On weekends, I even go bike riding or climb mountains to refresh myself. Before exams, I sleep earlier than before so that I can get enough rest because it is important to keep a clear mind during the exams.

As a saying goes, all work and no play makes Jack a dull boy. Better time arrangements can sure help me achieve more.

附1: 书面表达评分标准：

第一档：（15~13分）

完全符合题目要求，观点正确,要点齐全。句式多样，词汇丰富。语言准确，语意连贯，表达清楚，具有逻辑性。

第二档：（12~9分）

基本符合题目要求，观点正确,要点齐全。语法结构和词汇基本满足文章需要。语言基本通顺，语意基本连贯，表达基本清楚。虽然有少量语言错误，但不影响整体理解。

第三档：（8~5分）

部分内容符合题目要求，要点不齐全。语法结构和词汇错误较多，语言不通顺，表达不够清楚，影响整体理解。

第四档：（4~0分）

与题目有关内容不多，只是简单拼凑词语，所写内容难以理解。

附2:听力录音材料：

一、听对话，从下面各题所给的A、B、C三幅图片中选择与对话内容相符的图片。每段对话你将

听两遍。

Number 1

M: Hey, Betty! How do you study for a test?

W: I study by listening to tapes.

Number 2

M: Sally, did you use to be afraid of tigers?

W: Yes, I did.

Number 3

M: I think we should be allowed to play soccer after class.

W: I agree.

Number 4

M: It’s Celia’s birthday tomorrow. I don’t know what I should get h er.

W: If I were you, I would get her a scarf.

二、听对话或独白，根据对话或独白的内容，从下面各题所给的A、B、C三个选项中选择最佳选

项。每段对话或独白你将听两遍。

请听一段对话，完成第5至第6小题。

M: Hi, Maria! Whose backpack is this?

W: I don’t know. Look, there i s a hair band in it. So the owner can’t be a boy.

M: It could be Lily’s hair band. S he has long hair.

W: You’re right. The backpack might belong to Lily.

请听一段对话，完成第7至第8小题。

W: Have you done your homework, John?

M: Not yet.

W: Then why are you watching TV now?

M: This is my favorite baseball game.

W: You can watch it after you finish your homework.

M: But the show will be over.

W: There will be another game next week.

M: Please?

W: You know the rules, John.

M: I hate the rules! I can’t wait till I grow up.

请听一段对话，完成第9至第10小题。

W: Hi, Lewis! I’m so glad the holiday is finally here.

M: Me too. Imagine! We’ve got three days in a row.

W: So, where’re you going?

M: I don’t have any plans yet.I’ll just play it by ear. How about you, Tina?

W: We’re going hiking and camping in the mountains.

M: That sounds exciting!

W: Would you like to join us?

M: Hmm, let me think about it. I’ll let you know later.

请听一段对话，完成第11至第13小题。

M: Gina, I was invited to a p arty. I don’t know what to wear and I need your help.

W: Well, what kind of party is it?

M: It is an important party for all junior students.

W: When is the party?

M: 8:00 pm, next Friday evening.

W: Oh, that is one week from today. You have enough time to get prepared. And if I were you, I would wear a shirt and tie. But don’t wear a suit. That makes you look old.

M: I agree. But what if I don’t know anyone?

W: Well, if I were you, I would talk to someone first. It is not good to be too shy, right?

M: Yes, you are right.

W: Don’t worry. Everything will be fine. Have a good time at the party.

M: Thanks.

请听一段独白，完成第14至第16小题。

Hello, boys and girls. Welcome to our Summer Camp Day! It is a team competition taking place once every year both at the festival and on our website!

There are four teams: red, yellow, blue, and purple. You can join a team by joining t he team’s Facebook group. Within each group, team members work together on how they can win the competition, and decide more fun things like team songs, team flags and so on.

Each year, one team will be named the Summer Camp Day Champion. The winning team will be decided at the end of the festival, and we will fly their flag that day. The winning team will also get a party.

As a team member, you have to wear your team color and encourage your teammates, or join in games. The games include spelling game, guessing game, water ball game and soccer game. If you win a game, you will get prizes like T-shirts or some other souvenirs. Most of the games will be during the day on Saturdays, and the winning team’s party will be on Sunday afternoon.

I hope you will enjoy yourself in our summer camp!

三、听对话，根据所听到的对话内容和提示词语，将所缺的关键信息填写在答题卡的相应位置上。

对话你将听两遍。

W: Hello, Hoffman Travel Agency.

M: Hello. I’d like to book a flight from Beijing to Shanghai, please.

W: I see. May I have your name, please?

M: Thomas Green. T-H-O-M-A-S. Thomas. G-R-E-E-N, Green.

W: Got it. So when are you travelling?

M: I’d like to fly next Monday, November 25th.

W: Wait a moment, please. (Pause) We have one ticket left.

M: Perfect! How much is the ticket?

W: It is only 840 RMB.

M: Well, t hat’s a pretty fair price.

W: A ticket to Shanghai for next Monday, November 25th. OK, your ticket has been booked. The flight number is CA1589 from Beijing International Airport Terminal Three to Shanghai Hongqiao Airport. The departure time is 8:30 p.m.

M: Thank you so much! By the way, can I bring my pet with me?

W: I’m sorry. Pets are not allowed.

M: Oh, I see. Thanks.

W: You are welcome. Goodbye.

M: Bye.

人教版九年级英语期中考试题(含答案)

一、单项选择（15分） ( )1.---How do you study _______a test? ----I study _______reading the textbook. A. for ; for B. for ; by C. by ; for D .by ; by ( )2. I don't know _______.Can you tell me________? A. how swim; what to do B. how to swim ; what to do it C. how to swim; what to do D. what to swim; how to do ( )3. Liu Xiang is one of ______ runners in the world. A. famous B. more famous C. the most famous ( )4. My brother spends too much time ______computer games. A. to play B. play C. plays D.playing ( ) 5. If I ____ ten million dollars, I ____travel around the world. A. have; will B. had; will C. had; will D .had; would ( )6.The young trees should ______well as often as possible A.be water B. watered C. watering D. be watered ( )7.He pretended ________me when he walked by. A. not see B. not to see C. don't see D. to not see ( )8._________that river ________very clean? A. Did ;use to B. Did ;use to be C. Does ;used to D. Does ;use to be ( )9.You__________to school so early. It opens at 7. A. needn't come B. don't need come C. needn't coming D. needn't to come ( )10.----How many people will come to Beijing next year? ----It's hard to say. _________people , I think. A. Million of B. Millions of C. Three millions D. Three millions of ( )11.-----Whose guitar is this? -----Susan plays the guitar. It must _______. A. belong to her B. belong her C. belong to hers D. belong hers ( )12.Do you like music ____makes you excited? A. that B. what C. who D. it ( )13.We prefer ________at the party rather than______. A. to sing; dance B. to sing; dancing C. sing; to dance D. sing ;dance ( )14.------Where would you like to visit? ------ I'd like to visit____ A. warm somewhere B. warm anywhere

九年级化学上学期期中考试知识点整理

第一部分走进化学世界变化和性质一、物理变化和化学变化 1. 物理变化：没有新物质生成的变化。（1）宏观上没有新物质生成，微观上没有新分子生成。（2）常指物质状态的变化、形状的改变、位置的移动等。例如：水的三态变化、汽油挥发、干冰的升华、木材做成桌椅、玻璃碎了等等。 2. 化学变化：有新物质生成的变化，也叫化学反应。（1）宏观上有新物质生成，微观上有新分子生成。（2）化学变化常常伴随一些反应现象，例如：发光、发热、产生气体、改变颜色、生成沉淀等。有时可通过反应现象来判断是否发生了化学变化或者产物是什么物质。化学变化中一定伴随着物理变化。二、物理性质和化学性质 1. 物理性质：物质不需要发生化学变化就能表现出来的性质。（1）物理性质也并不是只有物质发生物理变化时才表现出来的性质；例如：木材具有密度的性质，并不要求其改变形状时才表现出来。（2）由感官感知的物理性质主要有：颜色、状态、气味等。（3）需要借助仪器测定的物理性质有：熔点、沸点、密度、硬度、溶解性、导电性等。2. 化学性质：物质只有在化学变化中才能表现出来的性质。例如：物质的可燃性、毒性、氧化性、还原性、酸碱性、热稳定性等。仪器使用和操作一、药品的取用原则 1. 使用药品要做到“三不”：不能用手直接接触药品，不能把鼻孔凑到容器口去闻药品的气味，不得尝任何药品的味道。 2. 取用药品注意节约：取用药品应严格按实验室规定的用量。如果没有说明用量，一般取最少量，即液体取1-2mL，固体只要盖满试管底部。 3. 用剩的药品要做到“三不”：即不能放回原瓶，不要随意丢弃，不能拿出实验室，要放到指定的容器里。 4. 实验时若眼睛里溅进了药液，要立即用水冲洗。二、固体药品的取用 1. 块状或密度较大的固体颗粒一般用镊子夹取。 2. 粉末状或小颗粒状的药品用药匙（或纸槽）。 3. 使用过的镊子或钥匙应立即用干净的纸擦干净。三、液体药品（存放在细口瓶）的取用 1. 少量液体药品的取用——用胶头滴管滴加药品应悬空垂直在仪器的正上方，将液体药品滴入接收药液的仪器中，不要让吸有药液的滴管接触仪器壁；不要将滴管平放在实验台或其他地方，以免沾污滴管；不能用未清洗的滴管再吸别的试剂（滴瓶上的滴管不能交叉使用，也不需冲洗） 2. 从细口瓶里取用试液时，应把瓶塞拿下，倒放在桌上；倾倒液体时，应使标签向着手心，瓶口紧靠试管口或仪器口，防止残留在瓶口的药液流下来腐蚀标签。 3. 量筒的使用（1）取用一定体积的液体药品可用量筒量取。读数时量筒必须放平稳，视线与量筒内液体

期中考试英语试题(含听力音频)

第二学期期中检测试卷七年级英语（满分：110分）听力部分 I.听力 (每题1分，共20分) A).听句子，选出句子中所包含的信息。(每个句子读两遍) ( ) 1. A. ice B. volleyball C. voice ( ) 2. A. play B. practice C. place ( ) 3. A. join B. jeans C. plane ( ) 4. A. anything B. any C something ( ) 5. A. excited B. expensive C. bad B). 听句子，选择最佳答语。（每个句子读两遍）[来源:] ( ) 6. A.I had a good time. B.Yes,I does. C. Once a week.[来源:] ( ) 7. A.For three days B. In two weeks C.It ’s about 114kilometres ( ) 8. A.He ’s tired. B.Yes, I ’d love to. C.I can ’t go. ( ) 9. A.Yes,he is. B.Good idea! C. Thanks. ( ) 10. A.I ’m a student. B. I ’m fine! Thanks C. By bike. C). 听对话，选择正确的答案。（每段对话读两遍） ( ) 11. A. too expensive B. too old C. Neighbour always plays music loudly ( ) 12. A. hamburger and a glass of milk B. bread C. rice and a glass of milk ( ) 13. A. Thursday B. Friday C. Sunday ( ) 14. A. fish B. apple C. bread ( ) 15 . A. by bus B. by bike C. on foot D). 听短文，根据其内容回答下列问题。（短文读两遍） 16. Mary is a(n) ________ girl. A English B American C Japanese D Chinese 17. Mary _________ speak English. A is B not C can D are 18. Her eyes are ________, and her hair is __________. A blue, black B yellow, white C blue, blond D black, blond 19. I am _________, but Mary is _____________. A Chinese, English B English, Chinese C an Chinese, an English girl. D Chinese, an English girl 。 20. Mary is _____________ now. A sweeping the floor B cleaning the blackboard C speaking Chinese D doing her homework 笔试部分 II.词汇（每题1分，共5分）期中考试英语试题听力.mp3

2018年海淀区初三上期中试卷及答案

2018年海淀区初三第一学期期中学业水平调研数学 2018．11 一、选择题（本题共16分，每小题2分）下面各题均有四个选项，其中只有一个．．是符合题意的．请将正确选项前的字母填在表格中相应的位置． 1．抛物线21y x =+的对称轴是 A ．直线1x =- B ．直线1x = C ．直线0x = D ．直线1y = 2．点(21)P -，关于原点对称的点P '的坐标是 A ．(21)-， B ．(21)--， C ．(12)-， D ．(12)-， 3．下列App 图标中，既不是中心对称图形也不是轴对称图形的是 A B C D 4．用配方法解方程2240x x --=，配方正确的是 A ．()2 13x -= B ．()214 x -= C ．()215x -= D ．()2 13x += 5．如图，以O 为圆心的两个同心圆中，大圆的弦AB 是小圆的切线，点P 为切点. 若大圆半径为2，小圆半径为1，则AB 的长为 A ． B ． C D ．2 6．将抛物线2(1)2y x =+-向上平移a 个单位后得到的抛物线恰好与x 轴有一个交点，则a 的值为 A ．1- B ．1 C ．2- D ．2 7 ．下图是几种汽车轮毂的图案，图案绕中心旋转90°后能与原来的图案重合的是 A B C D 8．已知一个二次函数图象经过11(3 )P y -，，22(1)P y -，，33(1)P y ，，44(3)P y ，四点，若324y y y <<，则1234y y y y ，，，的最值情况是

A ．3y 最小，1y 最大 B ．3y 最小，4y 最大 C ．1y 最小，4y 最大 D ．无法确定二、填空题（本题共16分，每小题2分） 9．写出一个以0和2为根的一元二次方程：________． 10．函数2y ax bx c =++的图象如图所示，则ac 0．（填“>”，“=”，或“<”） 11．若关于x 的方程2410x x k -+-=有两个不相等的实数根，则k 的取值范围是． 12．如图，四边形ABCD 内接于⊙O ，E 为直径CD 延长线上一点，且AB ∥CD ，若∠C =70°，则∠ADE 的大小为________． 13．已知O 为△ABC 的外接圆圆心，若O 在△ABC 外，则 △ABC 是________（填“锐角三角形”或“直角三角形”或“钝角三角形”）． 14．在十三届全国人大一次会议记者会上，中国科技部部长表示，2017年我国新能源汽车保有量已居于世界前列．2015年和2017年我国新能源汽车保有量如图所示．设我国2015至2017年新能源汽车保有量年平均增长率为x ，依题意，可列方程为． 15．如图，在平面直角坐标系xOy 中，抛物线2y ax bx c =++与 x 轴交于（1，0），（3，0）两点，请写出一个满足0y <的x 的值． 2015年和2017年我国新能源汽车保有量统计图保有量/ E C

人教版九年级英语试题

Unit 6 When was it invented? 一、单词默写。 1.样式，款式n.__________________ 2. 项目，工程n.__________________ 3.高兴，愉快n. __________________ 4. 每日的，日常的adj. _____________ 5.提到，说到v. ___________________ 6.列表，清单v./n.__________________ 7. 几乎，差不多adv._______________ 8. 煮沸，烧开v. _________________ 9.保持不变，剩余v._______________ 10. 气味n. 闻起来v.______________ 11. 国家的，民族的adj.____________ 12. 贸易，交易v./n.______________ 13.疑惑，疑问n./v. ________________ 14. 冰箱n.__________________ 15. 低的，矮的adj._________________ 16. 某人，重要人物pron./n. __________ 17.翻译v._______________________ 18. 锁上，锁住v._________________ 19. 地震n._____________________ 20.突然地adj.____________________ 21.钟，铃n.____________________ 22.音乐的，有音乐天赋的adj.___________ 23. 器械，工具n._______________ 24.加拿大人的，加拿大人adj./n._________ 25.分开，分散v.________________ 26. 篮，筐n.__________________ 27.英雄，男主角n._______________ 二、短语默写。 1.这是我的荣幸（thank you的回答）_________________ 很乐意________________ 2.如此伟大的发明________________ 3.在日常生活中___________________ 4.有道理____________________ 5.它提到…_______________________ 6.被广泛使用____________________ 7.在那时_______________________ 8.变得受欢迎____________________ 9. 据说_________________________ 10.偶然的__________________ 11.人们相信_____________________ 12. 第一个做某事的人______________ 13. 掉入_______________________ 14.一种很好的味道____________________ 闻起来很好__________________ 15.最…之一____________________ 16.被用来做…______________________ 17. 直到…才…_________________18.发生（无被动）____________________ 19. 毫无疑问_____________________20.少于／多于______________________ 21. 5000年前_____________________ 22. 成千上万________________________

九年级上学期期中考试数学试题

九年级上学期期中考试数学试题（时间：120分钟满分：120分）友情提示：亲爱的同学，你好！今天是展示你才能的时候了，只要你仔细审题、认真答题，把平常的水平发挥出来，你就会有出色的表现，放松一点，相信自己的实力！第一节选择题。（每题3分，共30分） 1、一个小组有若干人，新年互送贺年卡一张，已知全组共送贺年卡72张，则这个小组有（） A 、12人 B 、18人 C 、9人 D 、10人 2、顺次连接某个四边形各边中点得到一个正方形，则原四边形一定是（） C 、菱形 D 、对角线互相垂直且相等的四边形 3、一元二次方程01322 =++x x 用配方法解方程，配方结果是（） A 、081)4 3(22 =- -x B 、08 1 )43(22=-+x C 、081)43(2=--x D 、08 1 )43(2=-+x 4、下列方程中，无论a 取何值时，总是关于x 的一元二次方程的是（） A 、22)3)(12(2 2 -=+-x x a B 、0922 =--x ax C 、12 2-=+x x ax D 、0)1(2 2=++x x a 5、改革的春风吹遍了神州大地，人们的生活水平显著的提高，国内生产总值迅速提高，2000年国内生产总值（GDP ）约为8.75万亿元，计划到2020年国内生产总值比2000年翻两番，设以十年为单位计算，设我国每十年国内生产总值的增长率为x ，则可列方程（） A 、75.84%)1(75.82 ?=+x B 、75.82x 175 .82 ?=+）（ C 、75.84)x 1(75.8)x 1(75.82?=+++;D 、75.84)x 1(75.82 ?=+ 6、如图1、E 、F 分别是正方形ABCD 的边CD 、AD 上的点，且CE=DF ，AE 、BF 相交于点O ，下列结论：①AE=BF 、 ②AE ⊥BF 、③AO=OE 、④S DEOF AOB S 四边形△=中，错误的有（） A 、1个 B 、2个 C 、3个 D 、4个 7、如图2，在矩形ABCD 中，AB=3，AD=4， P 是AD 上的动点，PE ⊥AC 于E ，PF ⊥BD 于F ，则PE+FF 的值是（） A 、 512 B 、2 C 、25 D 、5 13 8、具有下列条件的两个等腰三角形，不能判断它们全等的是（） A 、顶角、一腰对应相等 B 、底边、一腰对应相等 C 、两腰对应相等 D 、一底角、底边对应相等 9、到三角形三条边的距离都相等的点是这个三角形的（） A ．三条中线的交点； B ．三条高线的交点； C ．三条角平分线的交点 D ．三条边的中垂线的交点。 10、如图，在等腰梯形ABCD 中，AB ∥CD ，AD=BC=acm ，∠A=60°，BD 平分∠ABC ，则这个梯形的周长是（） A.4a cm B.5a cm C.6a cm D.7a cm 二、填空题。（每题3分，共30分） 1、方程x x =2 的解是________________。 2、如图3，在Rt △ABC 中，∠ACB=90°，CD ⊥AB 于D ，在不添加辅助线的情况下，请写出图中一对相等的锐角：______________(只需写出一对即可) 3、用反证法证明：在一个三角形中，至少有一个内角小于或等于60°。应先假设______ _________________________________________________。 4、如图4，E 在正方形ABCD 的边BC 延长线上，若CE=AC ，AE 交CD 于点F ，则∠E=____若AB=2cm, D A E F O F O P E D C B A 图2 A B C D 图3 A B F E D 图4 E C B D A 图 5 B

八年级下册期中考试英语试卷及答案

2016-2017八年级下英语期期中考试 Ⅰ.单项选择（每小题1分，共15分）（）1.—What’s the matter your younger sister? —She has a cough. A.for B. at C. with D. on （）2.She had a , so she went to see the dentist. A. headache B. stomachache C.toothache D. fever （）3. She finished the novel and returned it to me in time. A. read B.to read C.reading D. Reads （）4. —I forgot to take my wallet. Can you me some money? —No problem. Here you are. A. lend B.borrow C.buy D.keep （）5. Your bedroom is very dirty. Please at once. A. clean up it B.clean it up C.clean up them D.clean them up （）6. Mary is singing and dreams of being a singer.

A. angry B.full of C.interested in D.surprised at （）7. —Have you heard that UFO landed on Center Street yesterday? —Of course. And alien got out of the UFO and visited the TV station. A.a;the B.the;an C.a;an D.an;an （）8. —I have too much housework to do at home. —ask your husband for help? A.You can B.Why don’t C.Why not D.How about （）9. —What are you going to do if it tomorrow? —I haven’t thought about it. A.doesn’t rain B.won’t rain C. doesn’t rain D.isn’t raining （）10.The teacher my mobile phone because I used it in class. A.took out B.took away C.took off D.took place （）11.—How long can I this book? —For a week. A.borrow B.lend C.return D.keep （）12. The girl ice cream in the sofa while

2019年北京市海淀区届九年级下期中练习数学试题含答案

海淀区九年级第二学期期中练习数学 2016.5 学校__________班级___________姓名___________成绩___________ 考生须知 1．本试卷共8页，共三道大题，29道小题，满分120分，考试时间120分钟。 2．在试卷和答题卡上准确填写学校名称、姓名和准考证号。 3．试题答案一律填涂或书写在答题卡上，在试卷上作答无效。 4．在答题卡上，选择题、画图题用2B 铅笔作答，其他试题用黑色字迹签字笔作答。 5．考试结束，将本试卷、答题卡一并交回。一、选择题（本题共30分，每小题3分）下面各题均有四个选项，其中只有一个．．是符合题意的． 1.“中华人民共和国全国人民代表大会”和“中国人民政治协商会议”于2016年3月3日在北京胜利召开．截止到2016年3月14日，在百度上搜索关键词“两会”，显示的搜索结果约为96 500 000条．将96 500 000用科学记数法表示应为 A ．96.5×107 B ．9.65×107 C ．9.65×108 D ．0.965×109 2.如图是某个几何体的三视图，该几何体是 A ．长方体 B ．正方体 C ．圆柱 D ．三棱柱 3.一个不透明的口袋中装有3个红球和12个黄球，这些球除了颜色外，无其他差别，从中随机摸出一个球，恰好是红球的概率为 A ．14 B ．34 C ．15 D ．45 4.下列图形中，是轴对称图形但不是中心对称图形的是 A ． B ． C ． D ． 5．如图，在ABCD 中，AB=3，BC =5，∠ABC 的平分线交AD 于点E ，则DE 的长为 A ．5 B ．4C ．3 D ．2 6．如图，等腰直角三角板的顶点A ，C 分别在直线a ， b 上．若a ∥b ，1=35∠?，则2∠的度数为 A ．35? B ．15? C ．10? D ．5? 7．初三（8）班体委用划记法统计本班40名同学投掷实心球的成绩，结果如下表所示： E C D B A

人教版九年级英语试题及答案

灵璧县杨疃中学九年级英语摸底考试试卷 Ⅰ..单项填空(共20小题；每小题1分，满分20分) 1. --What is Miss Gao's favorite________? --She is always in pink. Don't you know? A. colour B. book C. song D. movie 2. You __ drive your car so fast. It's very dangerous. A. wouldn't B. shouldn't C. couldn't D. mightn't 3. -- Would you like some milk? --________. A. Yes, please B. The same to you C. Help yourself D. My pleasure 4. -- ________ can you finish this English examination? -- In about one and a half hours. A. How far B. How often C. How soon D. How long 5. Smile to the world, ________ the world will smile back to you. A. nor B. but C. or D. and 6. -- I can't find David. Where is he? -- He ________ for tomorrow's competition at home. A. prepares B. is preparing C. has prepared D. prepared 7. Mrs. King put a coat ________ the sleeping girl to keep her warm. A. over B. with C. behind D. beside 8. --I am a little hungry, Mom. --There are some cakes on the plate. You can take ________. A. it B. one C. that D. this 9. I will meet Jane at the station. Please ________ what time she will arrive. A. count B. choose C. check D. catch 10. -- Tony, ________ are you in such a hurry? -- The meeting will start soon. I don't want to be late. A. where B.how C. when D. why 11. -- What was Jim wearing at the party? -- Nothing ________. He was in his usual shirt and jeans. A. special B. simple C. important D. interesting 12. -- It will be my turn. I feel a little nervous. --________ You can make it! A. Congratulations! B. Take it easy. C. kook out! D. Have a good time. 13. It is helpful to ________ a good habit of reading in language learning. A. take B. show C. develop D. match 14. The rivers will become dirtier and dirtier ______ we take action to protect them. A. since B. if C. until D. unless 15. -- Our school bus will leave at 8 o'clock tomorrow. Don't be late. -- OK. I will be there ten minutes________. A. sooner B. slower C. faster D. earlier 16. Thanks to the Internet, different kinds of information ________ in a short time. A. can be learned B. has been learned C. can learn D. has learned 17. I'm surprised to hear from her. ________, we last met ten years ago. A. On one hand B. That is to say C. Believe it or not D. In other words 18. The people in Ya'an have met lots of difficulties, but they haven't ________ hope. A. picked up B. given up C. looked for D. waited for 19. I still remember the college and the teachers ________ I visited in London years ago. A. what B. who C. that D. which 20. --TV says there will be a storm tomorrow. -- ________I planned to go climbing with my classmates. A. I hope so B. I'm afraid so C. Sounds good D. Bad luck Ⅱ.完形填空(共20小题；每小题分，满分30分) A Mr. and Mrs. Green were very worried about their son, Leo. He seemed to be dumb (哑的) 21 he was normal in every other way. Mr. and Mrs. Green tried everything to get him to 22 , but with no success. When Leo was six years old, the best doctors in the town 23 him carefully, but could find nothing wrong. And he seemed to be smart. It was just that he 24 spoke. "There might be something wrong with his 25 , and he doesn't know he's able to speak," one doctor said. "But he can read and write," said Mr. Green. "We've written him notes, telling him that he can speak." "It's certainly very 26 ," another doctor said. "Perhaps he'll be able to speak some day." 27 passed. Leo went to university. But he did not speak a 28 word. Then one day, Leo was having a meal with his parents. Without any warning, he looked up from his 29 and said, "Pass me the salt, please." Mr. and Mrs. Green were excited. "You spoke! You spoke!" they cried, "Why have you 30 so long to speak?" "I didn't have anything to say," he said. "Until now everything was perfect. But you forgot to put salt in these potatoes." 21. A. because B. when C. though D. before 22. A. speak B. walk C. play D. laugh 23. A. taught B. found C. examined D. asked 24. A. never B. often C. usually D. always 25. A. back B. hair C. face D. mind 26. A. unfair B. strange C. noisy D. quiet

九年级上学期数学期中考试试卷

九年级数学上学期期中考试试卷一、选择题（选项只有一个是正确的.每小题3分，共24分） 1．将一元二次方程2x2=1﹣3x化成一般形式后，一次项系数和常数项分别为（）A．﹣3x；1 B．3x；﹣1 C．3；﹣1 D．2；﹣1 2．一元二次方程x2﹣81=0的解是（） A．x1=x2=9 B．x1=x2=﹣9 C．x1=﹣9，x2=9 D．x1=﹣1，x2=2 3．已知函数y=的图象过点（1，﹣2），则该函数的图象必在（） A．第二、三象限 B．第二、四象限 C．第一、三象限 D．第三、四象限 4．如图，已知DE是△ABC的中位线，则△ADE的面积：四边形DBCE的面积是（） A．1：2 B．1：3 C．1：4 D．1：8 5．一元二次方程x2+x+2=0的根的情况是（） A．两个相等的实数根 B．两个不相等的实数根 C．无实数根 D．无法确定 6．下列四组线段中，不构成比例线段的一组是（） A．2cm，3cm，4cm，6cm B．1cm， cm，， cm C．1cm，2cm，3cm，6cm D．1cm，2cm，3cm，5cm 7．如图，DE∥BC，在下列比例式中，不能成立的是（） A． = B． = C． = D． = 8．如图，小正方形的边长均为1，则图中三角形（阴影部分）与△ABC相似的是（）A．B．C．D．二、填空题（每小题4分，共32分） 9．如果，那么= ． 10．已知点Μ（7，b）在反比例y=的图象上，则b= ．11．反比例函数的图象经过点（﹣ 2，3），则函数的解析式为． 12．x2﹣x配成完全平方式需加上． 13．若关于x的方程x2+2x+k=0的一个根是1，则方程的另一个根是． 14．在Rt△ABC，若CD是Rt△ABC斜边AB上的高，AD=3，CD=4，则BC= ． 15．如图，在△ABC中，点D在AB上，请再添一个适当的条件，使△ADC∽△ACB，那么可添加的条件是． 16．如图，反比例函数y=的图象上有两点A（2，4）、B（4，b），则△AOB的面积为．三、解答题（共64分） 17．用适当的方法解下列方程：（1）（x﹣2）（x﹣3）=12；（2）3x2﹣6x+4=0．

三年级下册英语期中考试试题

三年级英语下册期中测试题一、选出与下列词语相应的单词（10分）（）小的 A 、monkey B、 small C、panda （）足球 A 、foot B、 football C、ball （）牛奶 A、rice B、noodles C、milk （）老虎 A、lion B、tiger C、elephant （）自行车 A、bike B、door C、doll 二、选择（30分） 1、My favourite colour is . A、red B、book C、a blue kite 2、----How many kites? ----- A、It’s a car B、Ten C、It’s red 3、It’s elephant. A、a B、an C the 4、-----What are they? ----- A、It’s a kite B、They is kites C、They are kites 5、I don’t like bikes. A、ride B、riding C、rides 6、They don’t like . A、my B、I C、me 7、Lingling (不喜欢）肉。 A、likes B、don’t like C、doesn’t like 8、 Do you like meat ? ____________ A. Yes,I don’t. B. Yes,I do. C.Yes,she does 9. Amy _________swimming. A. like B. Likes C. likes 10、------ your farourite song? -------- It’s the ABC song. A、What B、where’s C、What’s 三、将下列相对应的大小字母连线（10分） K F J O B E G I C H

海淀区2019届初三期中数学试题及答案(官方版)

初三第一学期期中学业水平调研数学 2018．11 学校___________________ 姓名________________ 准考证号__________________ 一、选择题（本题共16分，每小题2分）下面各题均有四个选项，其中只有一个．．是符合题意的．请将正确选项前的字母填在表格中相应的位置． 1．抛物线21y x =+的对称轴是 A ．直线1x =- B ．直线1x = C ．直线0x = D ．直线1y = 2．点(21)P -，关于原点对称的点P '的坐标是 A ．(21)-， B ．(21)--， C ．(12)-， D ．(12)-， 3．下列App 图标中，既不是中心对称图形也不是轴对称图形的是 A B C D 4．用配方法解方程2240x x --=，配方正确的是 A ．()2 13x -= B ．()214x -= C ．()215x -= D ．()2 13x += 5．如图，以O 为圆心的两个同心圆中，大圆的弦AB 是小圆的切线，点P 为切点. 若大圆半径为2，小圆半径为1，则AB 的长为 A ． B ． C D ．2 6．将抛物线2(1)2y x =+-向上平移a 个单位后得到的抛物线恰好与x 轴有一个交点，则a 的值为 A ．1- B ．1 C ．2- D ．2

7．下图是几种汽车轮毂的图案，图案绕中心旋转90°后能与原来的图案重合的是 A B C D 8．已知一个二次函数图象经过11(3 )P y -，，22(1)P y -，，33(1)P y ，，44(3)P y ，四点，若324y y y <<，则1234y y y y ，，，的最值情况是 A ．3y 最小，1y 最大 B ．3y 最小，4y 最大 C ．1y 最小，4y 最大 D ．无法确定二、填空题（本题共16分，每小题2分） 9．写出一个以0和2为根的一元二次方程：________． 10．函数2y ax bx c =++的图象如图所示，则ac 0．（填“>”，“=”，或“<”） 11．若关于x 的方程2410x x k -+-=有两个不相等的实数根，则k 的取值范围是． 12．如图，四边形ABCD 内接于⊙O ，E 为直径CD 延长线上一点，且AB ∥CD ，若∠C =70°，则∠ADE 的大小为________． 13．已知O 为△ABC 的外接圆圆心，若O 在△ABC 外，则 △ABC 是________（填“锐角三角形”或“直角三角形”或“钝角三角形”）． 14．在十三届全国人大一次会议记者会上，中国科技部部长表示，2017年我国新能源汽车保有量已居于世界前列．2015年和2017年我国新能源汽车保有量如图所示．设我国2015至2017年新能源汽车保有量年平均增长率为x ，依题意，可列方程为． 2015年和2017年我国新能源汽车保有量统计图保有量/ E C