广州市第二中学 2020 学年第一学期开学摸底考试
初三年级英语科试卷
本试卷共四大题，共 10 页，考试时间 100 分钟，满分 120 分。
一、语法选择(共 15 小题；每小题 1 分，满分 15 分)
阅读下面短文,按照句子结构的语法性和上下文连贯的要求，从 1-15 各题所给的A、B、C 和D 项中选出最佳选项，并在答题卡上将该项涂黑。
Some people have a very poor sense of direction. Unluckily, I am one of 1 . I
2 a place many times but I may still get lost there the next time.
When I was a little girl, I never dared to ask strangers the way, so I 3 round in circles and hoped that by chance I would 4 the place I was going to.
Now, I am no longer 5 shy to ask people for directions, but I often receive helpless or even wrong information. Therefore, I try 6 giving people wrong directions. 7 anyone asks me the way somewhere, I would say, “Sorry, I am 8 stranger here.”
Once on my way to work I 9 by a man. He asked me if I could tell him the way to the Friendship Building. I gave him my usual reply. But just as I walked on only 10 steps, I realized that he had asked the way to my office building and I didn’t want to keep him
13 .
When I just got to my office, the secretary showed the man who had asked me for directions. Imagine how embarrassed I was and how 14 he was when we saw each other at the first 15 !
1. A. him B. they C. he D. them
2. A. have visited B. visited C. visit D. was visiting
3.A. use to walk
C. used walking
4.A. arrive B. get to B. used to walk
D. used to walked
C. reach to
D. get
5. A. so B. very C. to D. much
6. A. avoid B. avoided C. to avoid D. to avoiding
7. A. If B. Until C. Unless D. Since
8. A. a B. an C. the D. /
9. A. stopped B. was stopping C. be stopped D. was stopped
10. A. little B. a little C. few D. a few
11. A. So B. Because C. However D. Then
12. A. no one B. everyone C. someone D. anyone
13. A. wait B. waiting C. to wait D. waited
14. A. surprise B. surprised C. surprising D. surprisingly
15. A. sight B. see C. saw D. seen
二、完形填空(共 10 小题；每小题 1 分，满分 10 分)
阅读下面短文,掌握其大意，然后从 16-25 各题所给的A、B、C 和D 项中，选出最佳选项，并在答题卡上将该项涂黑。
Two brothers worked together on a farm. One was married and had a large family. The other had no wife yet. Although they lived in different houses, they shared 16 they got from their farm.
One day, th e single brother said to himself, “It’s not 17 that we share all the rice. I’m 18 and I need less than my brother.” So, every night he took a bag of 19 from his store-room and went across the field between their 20 , putting it into his brother’s store-room.
At the same time, the married brother thought, “It’s not fair to 21 all the rice. I’m married and I have my wife and children to 22 me when I am old. However, my brother has no one to take care of his 23 .” So, each night he also took a bag of rice and put it into his brother’s store-room.
Several months passed by. They found 24 strange that their rice never became less. Then, one dark night the two brothers ran into each other’s store-room. Slowly they began to understand what was happening. Their bags fell onto the ground and tears filled their eyes at once. They were 25 by each other.
16. A. something B. everything C. nothing D. some things
17. A. right B. popular C. interesting D. wrong
18. A. poor B. happy C. alone D. rich
19. A. meat B. food C. rice D. fruit
20. A. factories B. offices C. farms D. houses
21. A. get B. share C. give D. take
22. A. look after B. look for C. look out D. look at
23. A. hope B. children C. farm D. future
24. A. excited B. happy C. strange D. sad
25. A. angry B. moved C. frightened D. excited
三、阅读（共两节，满分 45 分)
第一节阅读理解(共 20 小题；每小题 2 分，满分 40 分)
阅读下列短文，从每题所给的A、B、C 和D 项中，选出最佳选项。并在答题卡将
该项涂黑。
(A)
Today is Raj’s first day of school in a new country, and he’s nervous. Raj bites his nails as
he and his mother wait in the school office. His family just moved to the United States from India. The principal, Ms. Alvarez, comes out of her office. His mother tells Ms. Alvarez that he earned high marks in English. Ms. Alvarez smiles and says, “I can tell he is the apple of your eye.” Raj wonders what Ms. Alvarez means. He has seen no apples in his mother’s eyes. “You are wonderful like a juicy, sweet apple!” his mother says to him. Raj feels a smile spread slowly across his face.
Ms. Alvarez escorts Raj to his new classroom and introduces him to his teacher, Mr. Washington. Mr. Washington reaches out his hand. Raj shakes it as his father showed him. “Welcome!” Mr. Washington says. Raj smiles. His first handshake in the United States is a
success. “Sandeep, come here, please,” Mr. Washington says. A boy with a big smile walks over. “Raj, this is Sandeep. He will assist you during the school day.” Namaste,” Sandeep says. He places his hands together as he bows slightly. The greeting feels like a little bit of home. “It is nice to meet another person from India.”
Next, Mr. Washington introduces Raj to the class. The students smile and call out. “Hello, Raj!”
“Please take a seat,” Mr. Washington says as he points to a chair. Raj picks it up. “Where would you like me to take it?” Raj asks. “Mr. Washington wants you to sit down,” Sandeep says with a kind smile. Raj looks around, confused. “It’s time for lunch!” Sandeep says. They join the class as it forms a line by the door. “The early bird get the worm!” Mr. Washington says. “Are there other things to eat?” Raj asks Sandeep.“I don’t think I would like worms.” “It’s an idiom --- saying,” Sandeep explains. “He means that the first to arrive get the best choice of food.” Raj shakes his head. This new way of speaking confuses him.
26.What problem does Raj face in the story?
A.He is late for his first day in a new school.
B.He gets lost in his new school.
C.He cannot find other people who speak his language.
D.He has trouble understanding English.
27.According to the story, what is the correct order for the following events?
a.Raj meets the principal.
b.Raj makes a new friend.
c.Raj has his first handshake.
d.Raj feels confused about the English idiom.
e.Raj goes to the lunchroom.
A. abced
B. bcaed
C. acbed
D. baced
28.What is the main reason Mr. Washington has Sandeep help Raj?
A.Sandeep is also from India.
B.Sandeep is Raj's neighbor.
C.Sandeep is new to the school.
D.Sandeep is the only student willing to help Raj.
29.Which of the following is TRUE according to the passage?
A.Raj is good at English.
B.The new school life is familiar to Raj.
C.Raj feels happy when his mum says he is wonderful.
D.Sandeep moves to the United Stales only with his mother.
30.How does Raj feel at the end of the story?
A.Bored
B. Puzzled
C. Disappointed
D. Scared.
(B)
Dr. Zhong Nanshan was born in October 1936 in Nanjing, Jiangsu Province. He is now a professor, famous respiratory ( 呼吸的) disease expert. In 1960, he graduated from Beijing University Medical School and worked at the School. During 1979 to 1981, he studied at the
Edinburgh University and London University. His father was also a doctor who gave his whole life to his medical career.
In 2003, SARS, a deadly disease, spread across China and the world. As a 67-year-old expert, Zhong had responsibilities to find the cause and treatments for it. When authorities ( 权威机构) thought Chlamydia ( 支原体) was the main cause of the disease, Zhong gave a new theory. Fearless of challenging the authorities, he bravely proposed that Chlamydia might be one cause of death, but not the only cause of SARS. Soon an effective treatment method was discovered by him. Zhong is cautious, independent, open-minded and never give up. With his search for truth and dedication ( 奉献) to his career, he was honored as part of the “Moved China” campaign in 2003.
Zhong is not only a doctor but also a teacher. In 2010, Zhong chose students for a 32- student “Nanshan class” to improve medical education and cultivate medical talent. He is also a good sportsman. He won the 400-metre race in a sport meeting for Beijing college students and set records that nobody at Peking University has broken in 1956. Even today, he exercises more than three times a week, and can even do10 push-ups in on breath. He thinks that exercise plays a key role in keeping people healthy.
Now at the age of 84, Zhong still works in the sudden outbreak of COVID-19 started in Wuhan in 2020. He has been working together with his students and thousands of medical workers from different provinces. They knew the great risk of being infected, but none of them has given up in the face of the danger. So, he is a doctor but he is also a fearless fighter.
31.From Paragraph1, we can learn that Dr. Zhong Nanshan .
A.is famous as a respiratory disease expert
B.graduated from Nanjing University
C.learned Chinese medicine from his father
D.only studied at London University
32.What achievements did Zhong make in the fight against SARS?
A.He was the first doctor to start treating SARS patients.
B.He found the cause of SARS.
C.He found an effective treatment method to cure SARS.
D.He stated that Chlamydia was the main cause of SARS.
33.Why does Dr. Zhong keep on doing exercise in his daily life? Because .
A.he is a good sportsman.
B.he once won the race in a sports meeting.
C.he set records in the 400-meter race in a sports meeting.
D.he thinks exercise is important to keep healthy.
34.Which of the following is NOT true about Dr. Zhong from the passage?
A.Sports is Zhong’s hobby.
B.Zhong is also a fearless soldier.
C.Zhong is both a doctor and a teacher.
D.Zhong was honored by “Moved China”.
35.From the passage, we can know that Dr. Zhong Nanshan is .
A.rich
B. considerate
C. patient
D. strong-minded
(C)
The world around you has hills, trees homes and buildings. Standing on the sidewalk, you can see what is happening on your street. That is your normal view. Imagine looking down at your town, or Earth, from space. You would have a much wider view. From space, you could see and photograph your whole country. Scientists who study the geography of surface use cameras on satellites(卫星) in orbit(轨道). The International Space Station is one satellite that has cameras. The Space Station’s orbit is nearly 400km above Earth. Orbiting cameras can make images, and these images track changes that happen to Eart h over time. They see “the big picture”. These images show climate changes, pollution damage and changes to land surfaces.
Large storms, such as hurricanes, can cause great damage and loss of life. NOT all areas have storm warning systems to let people know a dangerous storm is coming —in time for them to escape the storm’s path. Images from orbiting satellites help scientists predict where a storm will go.
Images from space can show where air or water is being polluted. For example, they can show where oil from an oil spill is spreading. The information can help people who live nearby. It can also help with cleanup efforts. Images can record how long it takes for the environment to recover.
Images from space show changes to land area. For example, they show deforestation, or the loss of forests. They also show erosion( 腐蚀) by wind or water. Deforestation is a world problem. Trees help keep our air clean and are home to wildlife. Photos from space show large forest areas have been cut down or burned. Deforestation is also a cause of land erosion. That is because tree roots help to hold soil in place. Serious erosion has happened in Madagascar, an island nation near Africa. Entire forests have been cut down for fuel and new farmland. Photos show large amounts of soil being washed away and lost.
Scientists say our use of fossil fuels causes most of the changes in Earth's climate. When we burn oil, coal and natural gas we create harmful gas in the air. This type of gas traps more heat than usual above Earth. Images from space show us the effects of Earth becoming warmer. For example, they show where ice is melting or breaking apart. Another result of Earth becoming warmer is the spread of deserts and other dry lands.
For most of history, people could see and understand just a small part of the world. They viewed everything at eye level. Even a person who traveled, or a scientist could only see what was right in front of him or her. Today, with camera orbiting in space, we can easily watch and track large areas of Earth. These images of Earth can tell us about its changing condition. They help us understand how changes happening far away might affect us. What we do with that knowledge may decide the future health of our planet.
36.Which of the following about images from space is NOT true?
A.Images from space help scientists predict where storms will go.
B.Images from space show changes to land areas.
C.Images from space show who has cut down trees.
D.Images from space can show where air is being polluted.
37.Why do we take images of oil spills from space?
A.To help with the cleanup efforts.
B.To show where the oil is spreading
C.To tell how long it takes for environment to recover
D.All above are correct
38.T he underlined word “track” means .
A.copy
B. record
C. develop
D. draw
39.What’s the writer’s opinion on the camera orbiting?
A.helpful
B. harmful
C. wasteful
D. interesting
40.What is the best title for the article?
A.satellite orbit C. A rocket on the moon
C. Changes on earth
D. Watching Earth from space
(D)
THESCHOOLUNIFORM SHOP
Make sure your uniform fits perfectly ahead of the new school term with our easy-to use size guide.
Measuring suggestions
Measure against your body rather than over your clothes to get a more exact result. BOYS ( Unit: cm)
size Height Chest Waist Hips Inside
leg
S 158
-
164
78-82 68-
70.5
37 75
M 83-86 70.5-
73
L 86-90 73-
75.5
1CHEST Measure your chest at the
fullest part. Place the tape close up under your arms.
2WAIST Measure your natural waistline.
3HIPS(for girls) Place your feet together. Measure your hips at the fullest part. COLLAR (for boys) Measure around the base of your neck where the collar sits.
4INSID ELEG Without shoes, place your feet together. Take the measurement from the top of your inside leg and measure down the inside leg to the floor.
5HEIGHIT Without shoes, place your feet together. Measure from the op of your head to the ground.
Sizes for sixth and seventh graders
41.If you would like to have a suitable size of uniform, you should measure against .
A.your clothes
B.your old uniform
C.your body
D.your height only
42.When measuring the , students should put their feet together.
①CHESE ② WAIST ③ HIPS ④ NECK ⑤ INSIDELEG ⑥HEIGHT
A.①②④
B.③⑤⑥
C.①③⑤
D.②④⑥
A.S
B.M
C. L
D. M or L
44.I f Jessica wants to get her new uniform on August 23, when should she place her order?
A.At 9:00 pm, on August 22.
B.At 10:30 pm, on August 22.
C.At 10:30 am, on August 23.
D.At 10:00 pm, on August 23.
45.Where is the text probably taken from?
A. clothes magazine.
B. A guidebook.
C. A poster.
D. A website.
第二节阅读填空（共 5 小题；每小题 1 分，满分 5 分）
阅读短文及文后A~E 选项，选出可以填入 46~50 各题空白处的最佳选项，并在答题卡上将该项涂黑。
You are in your teens. 46 . There are 3 tips that can help you out.
1. 47
This is the place for all your ideas. Rather than drawing or writing everything out on bits of paper, get yourself a notebook to carry around.
Many famous inventors kept a journal to write down their ideas as they came to them.
48 . And sometimes looking through the ideas can make new ones come to you.
Use the journal to write down new ideas. You could also write down problems that could be solved by an invention, and then you can take time to think about the solution.
2.Learn how things work
Learning how things work can help you understand how to get your invention to work. Play around with motors, gears(齿轮) and pulleys (滑轮). 49 .
3.Take an invention challenge
50 . Depending on your age and ability, this could be a drawing, or get yourself to really make the solution.
A.Challenge yourself to invent something.
B.This way, you won't forget any of your brilliant ideas
C.Get an invention journal.
D.Therefore, you can understand of how things move, connect and operate.
E.Your head is full of invention ideas, but you don’t know how to make them work?
四、写作（共三节，满分 50 分）
第一节单词拼写（共15 小题；每小题 1 分，共15 分）
根据下列句子及所给的单词的首字母写出所缺的单词。在填写答卷时，要求写出完
整单词（每空限填一词）
51.He lives c to school, so he walks to school every day.
52.It will c them a lot to rebuild the house. It’s too expensive
53.I was hiding behind a tree. S an alien appeared. I ran away in fear.
54.The bird liked to d into the water. When it came up again, there was a fish in its mouth.
55.The cartoon was so funny that it made all of us laugh h .
56.My parents and I took a t to Yunnan this summer holiday. We had a good time.
57.Hurry up, John, or we will m the plane
58.Many people like to o food online, therefore they don’t need to cook.
59.Don’t drive too f on a rainy night. It’s too dangerous.
60.It is silly to make the same m again and again.
62.The little girl showed great i in painting. When she grew up, she became a painter.
63.The virus spread quickly. They had no c but to wear masks.
64.I can take you in from a s door. No one knows the door.
65.Thanks to the Internet, They can still keep in t with their son in Europe.
第二节完成句子(共40 空；每空0.5 分，共20 分)
根据所给的汉语内容，用英语完成下列句子（每空限填一词）
66.学校有很多设施提供给学生。
many facilities for students in our school.
67.到目前为止，他们还没有见过面。
They each other so far.
68.有超过100 名警察派去抗洪了。
More than 100 policemen to fight the flood.
69.那些义工每周都去医院帮忙。
The volunteers went to the hospital every week .
70.他不仅没帮我，反而还取笑我。
helping me, he laughed at me.
71.你下次要做得更细心一些。
You should do it next time.
72.我今晚要熬夜了，这样才能按时完成工作。
I have to stay up late tonight I can finish the job on time.
73.这棵树可以长到20 米那么高。
This tree can grow 20 meters.
74.他够努力工作了，可以通过考试了。
He to pass the exam.
75.既然汽车坏了，就什么都做不了了。
the car broke down, nothing .
76.当水从窗户涌进来的时候我正住在鲸酒店。
I at the Hotel Whale while the water through the window.
77.把钢琴弹好是一项很难学的技能。
the piano is a difficult skill .
78.Bill 花了5 年时间呆在非洲研究动物。
Bill 5 years in Africa animals.
79.你那样做是很明智的。
you to do in that way.
第三节书面表达（共15 分，其中书写 5 分）
暑假期间，你和你的同学们以小组为单位参加不同的实践活动。请你根据以下内容提示，为学校的英文网页写一篇短文进行报道，介绍这些社会实践活动及其意义。
注意：1.
老人院: Old People’s Home
2.词数在 80 词左右（文章开头已给出，不计入总词数）；
3.不得透露学校，姓名等任何个人信息，否则不予评分。
Students in our school took part in different activities in this summer h oliday.
广州市第二中学 2020 学年第一学期摸底考试答案
1-15: DABBC CAADD CCBBA
16-25: BACCD BADCB
26-30: DCACB 31-35: ACDBD
36-40: CDBAD 41-45: CBCAD
46-50: ECBDA
51. close 52. cost 53. Suddenly 54. dive 55. happily 56. trip 57. miss 58. order 59. fast 60. mistake 61. interest 62. opinion 63. choice 64. secret 65. touch
66.There are
67.haven’t met
68.were sent
69.to help
70.Instead of
71.more carefully
72.so that
73.as tall as
74.worked hard enough
75.Since, could be done
76.was staying, was coming
77.Playing, well, to learn
78.spent, staying, to study
79.It is wise of
广州最好的初中排名 篇一：广州重点初中排名 08年的 24所提前批院校08公费线08择校线 1华师附中728 718（该数据已调整） 2实验中学720（该数据已调整）701（该数据已调整）3执信中学726（该数据已调整）720 4广雅中学712 709（该数据已调整）5第二中学702 696 6第六中学697 690（该数据已调整）7第七中学690 682 8第十六中682（该数据已调整）676 9广铁一中675 67110 广大附中678 670 11 培正中学668（该数据已调整）661 12 培英中学641 638 13 第五中学648 64214 协和中学645 640 15 八十六中641 640 16 育才中学647 643 17 第三中学658 648（该数据已调整）18 第一中学645 64019 真光中学641 635 20 六十五中641 630 21 四十七中653 685（07年该校择校热已调整）22 天河中学644 648 23 南武中学642 630 24 玉岩中学641 647 2008年高分保护线预计：690分（该数据已调整） 提前批设档线预计：650分（该数据已调整）择校、自筹经费班630(新增) 由于许多同学一摸或二摸考的一般，不敢报考前六所名校，因此认为全市只有前7000多名就有机会，其实这是不对的。下面是各分数段的市排名统计数据：状元冉婧(省实)：791分（包括10分加分），其中语文：135，数学：148，外语：146，物理：99，化学：100，政治：95，体育：58。 2007年广州中考总平均分前十强学校分别为：1.华南师范大学附属中学2.广雅实验学校3.育才实验学校 4.广州市第二中学应元学校 5.广州市第四十七中学 6.广州第四中学聚贤中学 7.中山大学附属中学 8.广东实验学校 9.华侨外国语学校10.真光实验学校 广州各初中09年中考成绩平均分1华附731 2广雅实验720.88 3应元712.84育才实验709.25中大附中702.5 6玉岩中学701.17 7西外698 8六中珠江677.20 916中665.510 侨外665.311 广附663.312 花都邝中660 13 省实658.3 14 7中656.915 铁一655.516 华附番禺655.17 17 2中650.5 序号学校2009中考平均分700分以上占比信息来源 1华师附中（公办）731 --------网络 2广雅实验720.8880.66% 学校网站3二中应元712.84育才实验709.25中大附中702.56玉岩中学（公办）701.17747中本部(公办) 700.88西关外国语学校（公办）697.9727 47中汇景(公办)6809四中聚贤678.310 六中珠江677.2011 天河中学（公办）67512 华附新世界668.713 16中（公办）665.514 华侨外国语学校（公办）665.315 广大附中（公办）663.316 花都邝煜维纪念中学66017 省实（公办）658.318 7中（公办）656.919 广外附设外语学校656.820 铁一（公办）655.521 华附番禺655.1722 培英实验中学652.8623 省实天河652.124
九年级上学期开学考试语文试题 姓名:________ 班级:________ 成绩:________ 一、选择题 1 . 下列文学、文化常识说法有误的一项是（） A．《山海经》是中国先秦古籍。主要记述的是古代神话、地理、物产、巫术、宗教、古史、医药、民俗等方面的内容。 B．《木兰诗》是南北朝时北方的一首乐府民歌，选自郭茂倩编辑的《乐府诗集》。 C．《陋室铭》中的“铭”是古代刻在器物上用来警诫自己或称述功德的文字，后来成为种文体。 D．《孙权劝学》一文里“孤岂欲卿治经为博士邪”中的“经”即儒家经典，其中“五经”指《诗》《书》《礼》《易》《论语》。 2 . 下列各句中，所引古诗文名句不符合语境的一项是 A．贾爷爷真可谓“老骥伏枥，志在千里”，七十岁了还不想着颐养天年，而是去山区兴办企业，带动当地人民脱贫致富。 B．朋友即将远行，小李在临别纪念册扉页上，潇洒写下“海内存知己，天涯若比邻”两句诗，祝福朋友克服成长路上的困难，学业进步，早日实现心中的梦想。 C．“山重水复疑无路，柳暗花明又一村”，我们在探讨学问时，往往会出现扑朔迷离的情况，但只要锲而不舍，继续深究，便会发现一个全新的天地。 D．世界上最美好的东西往往是无法用语言来表达的，只能用心去感受它，真可谓“此中有真意，欲辨已忘言”。 3 . 在《我爱这土地》一诗中，对“鸟”的形象分析不正确的一项是（） A．诗人只是把自己假设成一只鸟，但这鸟正是诗人自己，假设是为了更好地抒情。 B．这只鸟死得可怜，目的是唤起人们的同情。 C．鸟死了也要把羽毛腐烂在土地里，把自己的一切毫不保留地献给土地，表达了热爱祖国的执着深情。 D．我是一只鸟，我要歌唱，一直到死。 二、字词书写 4 . 在下面句子的括号中，给加点字注音。 （1）这是在达卡多拉游泳场的八千名观众一齐翘（____）首而望、屏声敛息的一刹（_____）那。
九年级上学期英语开学测试试卷 一、从下面每小题的A、B、C三个选项中选出可以替换划线部分的最佳选项。 1. — When did you write to your head teacher about your plan? —About a week ago. But he hasn’t responded to me yet. A . thanked B . agreed C . replied 2. — Mum, when shall we leave for HongKong? —I’m not sure. We have to wait for your dad to decide. A . put off B . take off C . set off 3. —I couldn’t express how happy I was when we won the game. — Me either. A . imagine B . say C . decide 4. — What else should we do? — We should also write to factories and ask them to stop polluting the river. A . What’s wrong B . What about C . What other things 5. — Sandy seems very sad. —She mentioned the experience to her classmates, but they didn’t believe her. A . thought about B . talked about C . cared about 6. — Did you get Wechat red packets during the holidays? —Yes. In fact, it is the most popular way of sending traditional holiday
广州市第二中学2017学年第二学期初三年级一模考试 数学科 试卷 （满分 150分） 本试卷分选择题和非选择题两部分，共三大题25小题，满分150分.考试时间120分钟. 第一部分 选择题（共30分） 一、 选择题（本大题共10小题，每小题3分，满分30分，每小题只有一个正确答案.） 1. 在A 、B 、C 、D 四幅图案中，能通过图1平移的到的是（ ） 图1 A B C D 2.已知一组数据c b a 、、的平均数为5，那么数据222---c b a 、、的平均数是（ ） A. 2 B. 3 C. 5 D.-1 3.从不同方向看一只茶壶，俯视效果图是（ ） 图1 A B C D 4.下列单项式中，与b a 2 是同类项的是（ ） A.b a 22 B.22b a C.2 ab D.ab 3 5.关于8的叙述不正确的是（ ） A.228= B.面积为8的正方形的边长是8 C.8是有理数 D.在数轴上可以找到表示8的点 6.如图2，为了测量河岸B A 、两点的距离，在与AB 垂直的方向点C 处测得 50,=∠=ACB a AC °，那么AB 等于（ ） A.?50sin a B.?50tan a C.?50cos a D. ? 50tan a 7.如图3，圆锥的底面半径为2，母线长为6，则侧面积为（ ） A.4π B.6π C.12π D. 16π
8.方程组?? ?=-=+13 47 23y x y x 的解是（ ） A.?? ?=-=31y x B.???-==13y x C.???-=-=13y x D.???-=-=3 1 y x 9.下列命题中假命题是（ ） A.正六边形的外角和等于360° B.位似图形必定相似 C.样本方差越大，数据波动越小 D.方程012 =++x x 无实数根 10.如图4，已知在ABC ?中，点E D 、分别在边AC AB 、上， BC DE ∥，1:2:=BD AD ,点F 在AC 上，2:1:=FC AF ，连接BF ，交DE 于点G ，那么GE DG :等于（ ） A. 1:2 B. 1:3 C. 2:3 D. 2:5 图3 图4 第二部分 非选择题（共120分） 二、 填空题（本题共6小题，每小题3分，满分18分） 11.人体中成熟的红细胞的平均直径为0.00000077米，用科学记数法表示为____________. 12.分解因式：=-x x 43 ___________________. 13.已知直线)3(2a x y -+=与x 轴的交点在)0,3(),0,1(B A 之间（包括B A 、两点），则a 的取值范围是____________________. 14.如图5，由6个小正方形组成32?的网格中，任意选取5个小正方形并涂黑，则黑色部分的图形是轴对称图形的概率是_______________. 15.如图6，在直角坐标系中，四边形OABC 为正方形，顶点C A 、在坐标轴上，以边AB 为弦的⊙M 与x 轴相切，若点A 的坐标为（0， 8），则圆心M 的坐标为__________. 图5 图6
广州市第二中学2020-2021学年第二学期开学考试初三年级 物理试卷 出卷人：审卷入： 注意事项：考试过程不允许使用计算器．本卷分第一部分(选择题)和第二部分(主观题)两部分，共4页，满分为100分，考试时间60分钟． 第一部分选择题(共30分) 一、单选题(本大题共10小题，共30分) 1．甲音叉发声时每分钟振动300次，乙音叉发声时振动频率为800Hz，相比于乙音叉() A．甲音叉发声时振幅一定更小B．甲音叉发声时振动频率一定更高 C．甲音叉发出声音的音调一定更低D．甲音叉发出声音的响度一定更大 2．如图，弧形轨道ab段光滑，bc段粗糙，小球从a点经最低点b运动至c点．下列 分析正确的是() A．从a到b的过程中，小球动能转化为重力势能 B．经过b点时，小球动能最大 C．从b到c的过程中，小球动能增大 D．从a到c的过程中，小球机械能守恒 3．游泳时佩戴游泳圈是防止溺水的有效方法．质量为50kg的小珊佩戴游泳圈后，能静静地漂浮在水面上，如图所示．游泳圈对她的作用力大小最符合实际的() A．5000N B．500N C．50N D．5N 4．对于静止在水平桌面上的矿泉水瓶，下列说法正确的是(） A．桌面对瓶子的支持力与瓶子所受重力是相互作用力 B．瓶子对果面的压力与桌面对瓶子的支持力是平衡力 C．瓶子正放与倒放时，对桌面的压力大小相等 D．桌面对瓶子的支持力是由瓶子发生弹性形变而产生的 5．以下说法正确的是() A．投篮时，篮球离手后继续飞向篮筐的过程中，篮球依然受推力的作用 B．摩擦力总是与物体的运动方向相反 C．运动员挥拍将羽毛球击出说明力可以改变物体的运动状态 D．重力的作用点一定在物体的几何中心 6．下列说法错误的是() A．B．C．D． A．甲：压力相同，接触面积越大，压强越大 B．乙：同一液体，深度相同时，各个方向压强相等 C．丙：马德保半球实验证明了大气压强的存在 D．丁：往B管吹气，A管液面上升是因为A管上端空气流速变大，压强变小了
人教版九年级上学期数学开学考试试卷新版 一、选择题 (共10题；共20分) 1. （2分）关于一元二次方程，下列判断正确的是（） A . 一次项是 B . 常数项是 C . 二次项系数是 D . 一次项系数是 2. （2分）下列方程中，关于x的一元二次方程是（） A . x2+2y=1 B . ﹣2=0 C . ax2+bx+c=0 D . x2+2x=1 3. （2分）关于x的方程ax2-3x+2=0是一元二次方程，则（） A . a＞0 B . a≠0 C . a=1 D . a≥0 4. （2分）若关于x的一元二次方程为ax2-3bx-5=0（a≠0）有一个根为x=2，那么4a-6b 的值是（） A . 4 B . 5
D . 10 5. （2分）已知关于x的一元二次方程M为ax2+bx+c＝0、N为cx2+bx+a＝0（a≠c），则下列结论：①如果5是方程M的一个根，那么是方程N的一个根；②如果方程M有两个不相等的实数根，那么方程N也有两个不相等的实数根；③如果方程M与方程N有一个相同的根，那么这个根必是x＝1．其中正确的结论是（） A . ①② B . ①③ C . ②③ D . ①②③ 6. （2分）将方程x2-6x+3=0左边配成完全平方式，得到的方程是（） A . （x-3）2=-3 B . （x-3）2=6 C . （x-3）2=3 D . （x-3）2=12 7. （2分）关于x的一元二次方程x2-mx-1=0的根的情况（） A . 有两个不相等的实数根 B . 有两个相等的实数根 C . 有一个实数根 D . 没有实数根 8. （2分）有一人患了流感，经过两轮穿然后共有49人患了流感，设每轮传染中平均一个人传染了x人，则x的值为（）
人教版2019届九年级上学期英语开学考试试卷A卷 一、在下列的空白处填入一个适当的词，使句子意思完整，语法正确。( (共5题；共5分) 1. （1分）You should look after y________ when your parents are not at home. 2. （1分）To be healthy. you should have more ________ (蔬菜)every day. 3. （1分）My mother enjoys ________(购物) every Saturday. 4. （1分）His father is a w________ man and he always makes a great decision at last. 5. （1分）The rain began to beat heavily against the windows and Ben could not fell ________ (睡着). 二、用括号内所给单词的适当形式填空。(5分) (共5题；共5分) 6. （1分）I have bought a new flat and it's on the ________ floor of the building. (twenty) 7. （1分）On hearing the great news that Beijing has won the bids of 2008 Olympic Games, The crowds at Tian An Men Square began to cheer ________. (excite) 8. （1分）Our classroom is much________ (big) than theirs. 9. （1分）The school is much bigger than ________ (our). 10. （1分）It's 7:30 pm. It's time for you ________(do) your homework, Sara. 三、单项选择。(15分) (共15题；共15分) 11. （1分）Life is like ______ one-way street. It will never lead you back. So, enjoy life every moment as ______ of them will happen the same way again. A . the; nothing B . a; none C . an; none D . a; nothing 12. （1分）—Mary _______ since ten years ago. It is impossible for her to make a living now. —You mean ________? That's kind of cruel to her. A . has been unemployed; in her twentieth B . has become unemployed; in twenties C . had stayed unemployed; in her twenties D . was unemployed; in her twenties 13. （1分）________ good advice it is! Why not go out for a walk? A . What a
人教版2019版九年级上学期开学考试语文试题A卷 姓名:________ 班级:________ 成绩:________ 考试须知： 1、请首先按要求在本卷的指定位置填写您的姓名、班级等信息。 2、请仔细阅读各种题目的回答要求，在指定区域内答题，否则不予评分。 一、选择题 1 . 下列选项中没有错别字的一项是（） A．有一天，你们吃着苹果搽着嘴，要记着，你们嘴里的那份甜呀，就是我祝福的心意。 B．你为人类的诉讼案辨护，搏斥暴君和凶神，你胜诉了。 C．时候既然是深冬，渐近故乡时，天气又阴诲了。 D．跟着我去踩田圃的泥土将润如油膏。 2 . 下列词语读音和书写全正确的一项是（） A．忧柔寡断秀颀（qí）海市蜃（shèng）楼可望而不可即 B．亵（xié）渎沾轻怕重坦荡如砥（dǐ）婆娑（suō） C．仙露琼浆迸（bèng）溅沧（cāng）桑断章取义 D．热枕（chén）旁逸斜出争妍（yàn）斗艳并蒂（dì） 3 . 下列说法错误的一项是（） A．“伯”“仲”“叔”“季”表示兄弟之间的排序。“谥号”是古代王侯、名臣、将相高级官吏、文士等死后，朝廷根据他们生前的德行给予的称号。 B．新闻结构的五部分，分别是标题、导语、主体、背景、结语，其中标题、主体、结语是必不可少的三部分。 C．科举时代，一般童生先在县或府里参加院试，考取了叫“进学”，也就是中了秀才，秀才再到省会参加三年一次的乡试，考中的为“举人”。 D．《最后一课》《昆虫记》《我的叔叔于勒》都是法国作家的作品。 4 . 下列句子中没有语病的一项是（） A．你不得不承认文学作品对人的影响是潜移默化的。
B．教育行政部门提出，要制定进城务工人员随迁子女义务教育后在当地参加升学考试。 C．通过加强校园周边道路交通安全的管理，使学生的人身安全得到了保障。 D．他的晚年，仍然精力充沛，充满创作激情，留下了许多优秀作品。 5 . 给空缺处选填语句，最恰当的一项是（）。 人是需要有点精神的，做人做事当有定力。。在他们身上，人生的定力是面对艰苦寂寞时“直挂云帆济沧海”的远大志向，是面对磨难逆境时“咬定青山不放松”的顽强毅力，是面对挫折打击时“泰山崩于前而色不变”的钢铁意志，是面对质疑嘲讽时“任尔东西南北风”的执着追求，是面对名利诱惑时“富贵不能淫，贫贱不能移，威武不能屈”的高尚气节。 A．有定力的人，信念如磐，敢于担当，不随物流，不为境转，意志坚强 B．无定力之人，往往朝秦暮楚、心浮气躁、浅尝辄止，最终贻误事业和人生 C．坚定的理想信念是政治定力的核心内容，具备这种政治定力的人，就能在大风大浪中稳坐“钓鱼船”，在拒腐防变中练就“金刚身” D．大凡历史上有作为、有成就的人物，其定力往往也是超出常人的 二、现代文阅读 阅读下面选文回答问题。 自给自足的人体生物能发电 ①随着煤炭、石油等资源日趋枯竭，环境恶化日趋严重，一些科学家为了开发更多的新能源，已把研究课题转向人类自身的生物能这一领域，利用人体生物能发电现已初见成效。 ②人体中存在着一些化学物质，它们之间在发生反应时会产生化学能量。像新陈代谢过程中，葡萄糖和氧分子的反应就有能量释放出来若稍加利用，这种能量就可以转化为电能。根据这一原理，科学家开始了人体生物电池的研究。 ③据专家介绍，人体生物电池的电极是由两根长2厘米、直径约1/7000纳米的碳纤维制成，在每根碳纤维的外层还涂有一种聚合物，此外还有一种作为催化剂的葡萄糖氧化酶聚合物的作用是将碳纤维与葡萄糖氧化酶连接成一个电路，而葡萄糖氧化酶则是用来加速葡萄糖与氧分子的化学反应。这种人体生物电池在37℃、pH为7.2的环境下工作，这很接近人体血液的温度和酸碱度它产生的动力可以驱动一个监控糖尿病的小型传感器。 ④人体生物能发电还有其它形式。当一个人坐着或站立时，就会持续产生重力势能。此时，若能采用特制的重力转换器就能将这种能转换成电能。美国有一家公司将发电装置埋在行人拥挤的公共场所，外面是一排踏板。当行
2020-2021学年广东省广州二中高一（上）期末数学试卷 一、单项选择题（共8小题）. 1．设集合A＝{1，4，x}，B＝{1，x2}且A∪B＝{1，4，x}，则满足条件的实数x的个数是（） A．1个B．2个C．3个D．4个 2．已知p：﹣2＜x＜2，q：﹣1＜x＜2，则p是q的（） A．充分不必要条件B．必要不充分条件 C．充要条件D．既不充分也不必要条件 3．命题“?x≥0，x3+x≥0”的否定是（） A．?x＜0，x3+x＜0B．?x＜0，x3+x≥0 C．?x≥0，x3+x＜0D．?x≥0，x3+x≥0 4．设a＝log54，b＝（log53）2，c＝log45，则（） A．a＜c＜b B．b＜c＜a C．a＜b＜c D．b＜a＜c 5．已知sin（α﹣π）＝﹣，α∈（，），则cosα＝（） A．B．C．D． 6．已知a＞0，b＞0，若不等式恒成立，则m的最大值等于（）A．10B．9C．8D．7 7．函数y＝tan x+sin x﹣|tan x﹣sin x|在区间内的图象是（）A．B． C．D． 8．已知，，则cos2α＝（）
A．B．C．D． 二、多项选择题（共4小题）. 9．下列说法中错误的是（） A．幂函数的图象不经过第四象限 B．y＝x0的图象是一条直线 C．若函数的定义域为{x|x＞2}，则它的值域为 D．若函数y＝x2的值域为是{y|0≤y≤4}，则它的定义域一定是{x|﹣2≤x≤2} 10．满足不等式sin x≥cos x，x∈[0，2π]的x的值可以是（） A．B．C．D． 11．若函数y＝f（x）在区间[a，b]上的图象为一条连续不断的曲线，则下列说法中错误的有（） A．若f（a）f（b）＞0，则不存在实数c∈[a，b]，使得f（c）＝0 B．若f（a）f（b）＜0，则存在且只存在一个实数c∈[a，b]，使得f（c）＝0 C．若f（a）f（b）＞0，则可能存在实数c∈[a，b]，使得f（c）＝0 D．若f（a）f（b）＜0，则可能不存在实数c∈[a，b]，使得f（c）＝0 12．已知函数，为函数f（x）零点，直线为函数f（x）的对称轴，且f（x）在上单调，则ω不可能等于（）A．11B．9C．8D．6 三、填空题（共4小题）. 13．已知函数f（x）＝为R上的奇函数，则n的值为． 14．已知x＜3，则的最大值为． 15．函数y＝﹣sin2x﹣4cos x+6的值域是． 16．已知λ∈R，函数f（x）＝，当λ＝2时，不等式f（x）＜0的解集是．若函数f（x）恰有2个零点，则λ的取值范围是． 四、解答题（70分） 17．物体在常温下的温度变化可以用牛顿冷却规律来描述：设物体的初始温度是T0，经过
北师大版2019届九年级上学期英语开学考试试卷B卷 一、单项选择 (共20题；共40分) 1. （2分）‘I’____the first letter in the word‘irregular’,and there is___‘u’and ___‘l’in it. A . is, a,an B . am, an, a C . is, an, a D . am, a, an 2. （2分）you practice, you can play the violin. A . The more; the well B . The more; the more well C . The more; the better D . More; well 3. （2分）I can't tell when that house exactly, but it must be very long ago. A . is built B . will build C . was built D . has built 4. （2分）To keep children away from danger, we warn parents ______ their children at home alone, A . leave B . to leave C . not leave D . not to leave 5. （2分）Our English teacher has __________ hair. A . curly short brown B . curly brown short C . short curly brown D . brown short curly 6. （2分）Mrs. Smith is a good teacher. She is _______ her students.
广州市第二中学简介 广州市第二中学创建于1930年，1956年被广州 市评定为广州市重点中学、1994年被评为广东省首批省一级学校、2007年通过广东省国家级示范性普通高中验收。她由位于越秀区应元路的初中部和位于广州科学城的高中部组成，是广州市区局属A类中学中唯 一的一所完全中学。 学校初中部校区北倚风光秀丽的越秀 山，南临雄伟壮丽的中山纪念堂，校园布局 合理，书香浓郁。这里地灵人杰，文运昌盛， 曾是清代岭南著名的书院学海堂、菊坡精舍、应元书院所在地，书院文化底蕴深厚，源远流长。清同治十年（1871），在应元书院攻读的顺德举人梁耀枢高中辛未科状元，被传为“应元佳话”；近代岭南的风流人物陈澧、朱次琦、梁启超、胡汉民、梁鼎芬、文廷式等都曾在这块土地上学习过。 2005年9月，学校响应市委市政府的号召，积极发挥优质教育资源的辐射作用，率先在广州市经济开发区的核心区域——科学城建成高中部校区。她，毗邻开发区行政中心，凭苏东坡曾结庐读书的苏元山而建，内有天然泉水汇聚而成的北冥湖；校园占地面积300亩，另外新开辟占地208亩的新课程拓展基地（含无线电测向训练基地、科普考察基地、艺术展示基地、心理辅导拓展基地、生物园、地理园等）；学校环境优美，气势恢宏，建筑布局合理，学习、生活与运动设施一应俱全，设计规模为60个教学班，可容纳3000名师生，是一所以“山水学府，生态校园”为理念构建的现代化一流的全寄宿学校。
学校以培养“不一样的二中人”为目标，全面推进素质教育，着力培养学生的创新精神和实践能力，促进学生完善人格，壮大情怀，滋润生命，形成了“合理负担高效益，因材施教高质量”的办学特色。学校文体活动丰富多彩，现有武术社、心翼社、模拟联合国、show风气象站等30多个学生社团；书法、阅读、戏剧节、体育节、艺术节、创作人音乐会、“super sing star”、青年志愿者等活动深受学生欢迎，在市内外享有良好口碑。学科竞赛成绩斐然，无线电测向活动享誉全国，学校被国家体育总局命名为全国科技体育示范校、无线电测向训练基地；信息学、物理学奥林匹克竞赛成绩突出，邓原等多位同学获得全国一等奖，多人被保送清华大学、北京大学、复旦大学等名牌高校。高考、中考成绩长期处于广州市前列，初高中毕业班工作一直荣获广州市一等奖。高中部新校区启用以来，每年的高考成绩较入口成绩均有大幅提升，加工能力在同类学校中名列前茅。2013年高考首次实现“6510”的历史性目标（重本率达65%、10位同学进入全省文理科前100名）：500位同学达到重点高校录取分数线，重本率超过66%；6位同学被清华大学录取，4位同学被北京大学录取；2013年10月，学校成为广州市首个获得北京大学“中学校长实名推荐制”推荐资质的中学。由于办学成绩突出，学校的影响力和美誉度日益提升，被社会誉为“历史名校，状元摇篮”。 在新的发展周期，学校将坚持“立志成才，振兴中华”的校训和“元元传承，厚德格物”的办学理念，不断深化教育教学改革，追求有品质的教育，办端正的教育，为建成全省乃至全国有较高知名度的一流中学而努力奋进。
2017年广州市第二中学初二下学期期中英语试卷 一、语法选择 John looked around at the group of fathers and their sons 1 him. He was sure that the young boys didn't want to be there. 2 ，Joe wanted to keep Yurok customs 3 . Joe passed out a timetable of how long 4 for the group to build their canoes (a kind of small boat). "We are going to spend two months 5 it?" David said after reading the timetable. "Son, this is important," said David's father. "I built a canoe with my dad 6 I was your age. Now it's my turn to build a canoe with you. It's a 7 ." "David, do you know why we're building canoes?" asked Joe. David 8 his head no. "That's because we are forgetting what our grandfathers did. They grew food and used to go fishing by canoe. But now that we can go to the supermarket for food, we don't fish as before." " 9 our food from the supermarket is convenient." Said David. "The fish from the store doesn't taste as 10 as the fish you catch," said David's father. "After we build our canoe, we will go fishing. If you eat the fresh fish, you 11 ." "But why are redwood trees 12 for the canoes? It seems that it will be a lot of hard work to cut them 13 ." David said. "We get many things from 14 redwood trees." said Joe. "Didn't you know that your house is made of a redwood tree?" "Well, then I will have no time to play my video games in this summer." Said David 15 . ( ) 1. A. in the middle of B. at back C. in the front of D. in front of ( ) 2. A. Therefore B. However C. Besides D. In addition ( ) 3. A. life B. lively C. lives D. alive ( ) 4. A. taking B. to take C. will take D. will be taken ( ) 5. A. build B. to build C. built D. building ( ) 6. A. before B. since C. when D. after ( ) 7. A. traditional B. traditionally C. traditions D. tradition ( ) 8. A. shaking B. shakes C. shaken D. shook ( ) 9. A. Buy B. Bought C. Buys D. Buying ( ) 10. A. good B. well C. better D. best ( ) 11. A. know B. will know C. have known D. knew
广州市第二中学2017年第二学期一模 初三年级英语科目试卷满分110分 出卷人:胡楠江晓玲林晓莉2017.04.14 审核人：杨颖，王健萍张业锡 一、语法选择（共15小题每题1分共15分） This was the fourth time this year that Lin was the new kid in school. Four moves in seven months----all because her mother's job kept them moving. she had decided back in December that 1 new friends was a waste of time. She would join no more clubs. She would 2 add no new names to her phone list. 3 her first day the teacher Mrs. Leonard welcomed her to the class and assigned a “buddy” to help her and let to find her way around. This time, it was a girl named Marley, or Carly, or something. Lin had stopped paying attention to 4 the kids? names were . Lin knew that she would forget them all, just as 5 kids from all those other schools had probably forgotten her. 6 Mrs. Leonard was giving Lin textbooks, Lin made her decision: at this school, she would be 7 remembered . The next day, Tuesday, instead of 8 the usual jeans and T-shirt, she dressed 9 in a pair of bloomers from an old Raggedy Ann Halloween costume . She didn't brush her hair. On Wednesday ,she wore 10 old dress of her mother's, along with soccer cleats. “A t least they?ll remember me after we?ve moved away”. she thought on Thursday as she put on a plaid skirt, a T-shirt ,and a pile of long beaded necklaces 11 her grandmother had given her to play with. On Friday, they called her mother to school. she was a bit worried about what her mom 12 when she saw her outfit--a hula skirt from a vacation in Hawaii 13 on top of a pair of shabby jeans. From inside the principal's office, she heard her mother and Mrs. Leonard talking. “She'll be so 14 ,” her mother said to Mrs. Leonard in the hallway.” We 15 so often in the last seven months ,but this time we are here to stay. I …ve got a new job in town. Fi nally, she'll be able to fit in.”
广东省广州市第二中学2020~2021学年九年级10月月测物理 试题 学校:___________姓名：___________班级：___________考号：___________ 一、单选题 1．静置的密封容器内只有氢气．若以○表示氢气分子，图中最能代表容器内氢气分子分布的是（ ） A ． B ． C ． D ． 2．下图是教材中的四幅插图，对此分析正确的是 A ．甲图实验，说明接触面间会发生扩散现象 B ．乙图是同学们爱吃的茶叶蛋，煮茶叶蛋时，水温升高，蛋壳颜色变化加快 C ．丙图实验中，应将装有空气的玻璃瓶放在下面 D ．丁图实验中，住里推活塞时，水分子间只有斥力作用 3．如图所示，放在水平地面上的物体所受重力为G ，系着它的一根竖直轻绳绕过光滑滑轮，它的另一端受的拉力为F ，地面对物体的支持力为N ，则下面关于这三个力大小的关系正确的是 A ．F G = B ．G N = C ．F N = D ．F N G += 4．如图所示的各种情景，属于热传递改变物体内能的是
A ．滑下滑梯 B ．给水加热 C ．压缩点火 D ．搓手取暖 5．工人师傅分别用如图所示的甲、乙两种方法，将重为G 的物体搬上离地面高度h 的车上，所做的功分别为W 甲、W 乙，下列说法正确的是（ ） A ．甲方法不可以省力，但能省功，W Gh <甲 B ．甲方法可以省力，也能省功，W Gh <甲 C ．乙方法可以省力，但不能省功，W Gh ≥乙 D ．乙方法可以省力，也能省功，W Gh <乙 6．一把杆秤原来很准确，但跟它配套的秤砣不小心被碰掉了一小块，再用它称量物体时，称量结果将 A ．不变 B ．偏小 C ．偏大 D ．无法确定 7．如图所示，小明分别使用甲、乙、丙、丁四种机械匀速提升物体（绳长不变），测得拉力和物体M 、N 所受的重力如表所示，则（ ）
2020年九年级上学期数学开学考试试卷（II ）卷 一、选择题 (共10题；共20分) 1. （2分）若一元二次方程中的，则这个一元二次方程是（） A . B . C . D . 2. （2分）一元二次方程4x2－45＝31x的二次项系数、一次项系数、常数项分别为（） A . 4、－45、31 B . 4、31、－45 C . 4、－31、－45 D . 4、－45、－31 3. （2分）在下列方程中，一元二次方程是（） A . x2﹣2xy+y2=0 B . x2﹣2x=3 C . x（x+3）=x2﹣1 D . x+ =0 4. （2分）下列给出的四个命题： ①若|a|=|b|，则a|a|=b|b|；②若a2﹣5a+5=0，则；③（a﹣1） =
④若方程x2+px+q=0的两个实根中有且只有一个根为0，那么p≠0，q=0． 其中是真命题是（） A . ①② B . ②③ C . ②④ D . ③④ 5. （2分）设是方程的两个实数根，则的值（） A . 2018 B . 2019 C . 2017 D . 2020 6. （2分）一元二次方程x2-2x-m=0，用配方法解该方程，配方后的方程为（） A . （x-1）2=m2+1 B . （x-1）2=m-1 C . （x-1）2=1-m D . （x-1）2=m+1 7. （2分）一元二次方程（1﹣k）x2﹣2x﹣1=0有两个不相等的实数根，则k的取值范围是（） A . k＜2且k≠1 B . k＞2且k≠1 C . k＞2
D . k＜2 8. （2分）学校要组织足球比赛．赛制为单循环形式（每两队之间赛一场）．计划安排21场比赛，应邀请多少个球队参赛？设邀请x个球队参赛．根据题意，下面所列方程正确的是（） A . x2=21 B . x（x﹣1）=21 C . x2=21 D . x（x﹣1）=21 9. （2分）若关于x的一元二次方程（k-1）x2+x+2=0有实数根，则k应满足（） A . k≤ B . k≤且k≠1 C . k≤且k≥0 D . 0≤k≤且k≠1 10. （2分）不解方程判断下列方程中无实数根的是（） A . -x2=2x-1 B . 4x2+4x+=0 C . x2-x-=0 D . (x+2)(x-3)==-5 二、填空题 (共8题；共8分)