2020年侨香外国语学校七上期中考试
2019-2020学年江苏省无锡市南长实验、侨谊教育集团七年级(上)期中语文试卷

2019-2020学年江苏省无锡市南长实验、侨谊教育集团七年级(上)期中语文试卷一、积累与运用(共27分)1. 根据拼音写汉字或给加点字注音。
①高miǎo________②吝sè________③jué________别④脑髓________2. 根据课文默写,并写出相应的作者或篇名。
①水何澹澹,________。
(曹操《________》)②________,于我如浮云。
(《论语•述而》)③潮平两岸阔,________。
(王湾《次北固山下》)④峨眉山月半轮秋,________。
(李白《峨眉山月歌》)⑤________,应傍战场开。
(岑参《行军九日思长安故园》)⑥________,崔九堂前几度闻。
(________《江南逢李龟年》)⑦兴趣是最好的老师,正如孔子《论语》中所说:________,________。
”3. 下列句中加点成语运用不正确的一项是()A.文学作品的艺术性越高,对读者潜移默化的力量也越大。
B.“万籁此俱寂,但余钟磬音”与“蝉噪林逾静,鸟鸣山更幽”有异曲同工之妙。
C.这两篇文章各得其所,一篇语言优美,一篇情感真挚,真是难以取舍。
D.杨绛先生为人谦逊低调,做学问孜孜不倦,钱钟书先生评价她:最贤的妻,最才的女。
4. 下列句子中没有语病的一项是()A.在很大程度上,人类精神文明的成果是以书籍的形式保存的。
B.徐凝的一首诗,让扬州与明月结下了难以分开的不解之缘。
C.8月1日,当肖战来到无锡时,受到了广大粉丝的热烈欢迎。
D.能否彻底治理环境污染,留住碧水蓝天,关键在于有关部门严格执法。
5. 下列对文学常识的表述有误的一项是()A.《白洋淀纪事》是孙犁创作的小说、散文的结集,他用富有诗情的笔调赋予白洋淀以英雄的气质和浪漫的色彩。
B.湘西是沈从文的“文学原点”,《湘行散记》这部小说集,是他构建“文学湘西”世界的一块重要拼图。
C.鲁迅首次知道“赫胥黎”,接触“物竞天择”“苏格拉底”等人的思想是在矿路学堂,这段经历在《琐记》中提及。
2020-2021学年深圳福田外国语学校侨香校区高三英语期中考试试卷及参考答案

2020-2021学年深圳福田外国语学校侨香校区高三英语期中考试试卷及参考答案第一部分阅读(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项ALook at Some Greatest BookstoresAnother CountryKreuzberg, Berlin, Germany. Another Country is an English Language second hand bookshop which is mostly used as a library. They have about 20, 000 books that you can buy or borrow. Some regular events are held at the shop, such as readings, cultural events, social evenings and film nights.Atlantis BooksOia, Santorini, Greece. Atlantis Books is an independent bookshop on the island of Santorini, Greece. It was founded in 2004 by a group of friends from Cyprus, England, and the United States. Throughout the year it has hosted literary festivals, film screenings, book readings, and good old fashioned dance parties.Bart’s BooksOjai, California. U. S. A. “The World’s Greatest Outdoor Bookstore”, a bookstore founded by Richard Bartinsdale in 1964. Shelves of books face the street, and regular customers are asked to drop coins into the door’s coin box to pay for any books they take whenever the store is closed.Adrian Harringtonsince 1971. Rare books: rare first editions; leather bound sets and general antiquarian(古玩).Address: 64a Kensington Church Street, Kensington, London, England, UK.Corso Como BookshopMilan, Italy. Extensive selection of publication on art architecture, design graphics and fashion, along with a strong emphasis on photography. It was founded in 1990 in Milan, Italy, by Carla Sozzamil.The BookwormChina. A bookshop, library, bar, restaurant and event space, now with four divisions in three cities — Beijing, Suzhou and Chengdu. The interconnecting rooms with floor-to-ceiling books on every wall are light and airy in summer, yet warm and comfortable in winter.1.What can you do in Atlantis Books?A.Enjoy rare books.B.Attend a festival.C.Learn photography.D.Buy books anytime.2.Which bookstore has the longest history?A.Adrian Harrington.B.Atlantis Books.C.Bart’s Books.D.Corso Como Bookshop.3.How is The Bookworm different from the others?A.It is used as a library.B.It focuses on photography.C.It hosts all sorts of activities.D.It has branches in different cities.BPablo Picasso was born on October25 inMalaga. Spain in 1881. Taking after his father, Picasso shared apassion(热爱)for painting and art. Even though he wasn't the best student in school, Picasso excelled at drawing. Noticing his amazing talent, Picasso's father, an artist, taught him everything he knew. Before long, Picasso could paint and draw much better than his father. With this rich talent, Picasso paid less and less attention to his schoolwork and spent the majority of his day sketching and drawing in notepads and sketchbooks.When he was a little bit older, Picasso moved twice and was accepted into two fine art programs. However, he didn't care very much for the special techniques they taught and often wandered the streets by himself drawing the scenes around him. After moving to these two places, Picasso moved back home toBarcelonaand decided that he would develop new techniques of art and painting based on what he saw.Later, Picasso decided to move toParis,France, where he began perfecting his own techniques of painting, drawing and other forms of art. His drawings. paintings, and an included pieces about sadness, poverty, classics and self-portraits. One of his major types of work is calledcubism(立体派),which includes art with all sizes of geometric shapes together on the piece of an. This type of art is very important because no other artists had come up with the idea before. Picasso decided to try something new, and as a result, cubismis widely accepted today as a classic style of art.Picasso inspires us to always be thinking. He tells us to think outside the box and come up with fresh new ideas that can change the world. He surely plays a significant role in the art field.4. What do we know about Picasso as a student at school?A. He hated doing his homework.B. He was very proud of his talent.C. He showed great talent for drawing.D. He was often praised by his teacher.5. What did Picasso's father do when he found Picasso's gift?A. He tried his best to help Picasso.B. He blamed Picasso for his laziness.C. He asked Picasso to finish his work on time.D. He encouraged Picasso to do better at school.6. What was Picasso's attitude towards the special techniques at that time?A. He thought highly of them.B. He took no interest in them.C. He was confused about them.D. He was concerned about them.7. What does the author tell us in the last two paragraphs?A. Picasso has great faith in art.B. Picasso has changed the world a lot.C. Picasso can do anything he wants to.D. Picasso is a highly creative artist.CLife in the Internet age is lonely—or is it? That’s what experts in human interaction are debating after a new Stanford University survey has been published.According to the study, the more time people spend online, the less they can spare for real-life relationships with family and friends. The researchers asked 113 people about the Web’s influence on daily activities. 36%of those people are online for more than five hours a week.” As Internet use becomes more widespread, it will have an increasingly isolating (孤立的) effect on society,” says Robert Kraut, one of the researchers.Scholars and Web lovers criticized the study for stretching its data to make the “isolating” point. While 13%of regular Web users admitted the loss of time with loved ones, 60%reported watching less TV. The survey also shows that E-mail is the most popular online activity. If some of webheads (网虫)spend what was once passive TV time keeping company with friends via E-mails, “that’s a move toward greater connectedness,” says Paul Resnick, a professor at the University of Michigan.Thisisn’t the first claim that the Web should be criticized. A 1998 report monitored 73 Pittsburgh-area families’ Net use for a year. People who used the Internet more “talked less to family members and reported beinglonelier and more depressed.” says Robert Kraut.“It’s true that there have been big declines in social connectedness over the past decades, but those declines began before the Internet was invented,” says Thomas Putnam.As Amitay Etzioni says, the Internet gives us a different kind of social life—not better or worse than before, but just different.8. Who claimed that the Web had negative influence?A. Paul Resnick.B. Robert Kraut.C. Thomas Putnam.D. Amitay Etzioni.9. The underlined word “This” in Para.4 refers to .A. the opinion expressed in Bowling AloneB. the survey made by the University of MichiganC. the conclusion in a report written in 1998D. the study conducted by Stanford University10. From the passage we learn that .A. watching TV used to take time away from staying onlineB. the Web was blamed more than once for causing an isolating effectC. 36%ofweb users spend more than five hours a week onlineD. the Web has the same influence as telephones and televisions11. The passage mainly discusses .A. how we can make a better use of the InternetB. how declines in social connectedness appearC. whether the Internet causes an isolating effectD. what a different life the Internet brings to usDIn the Hollywood industry, most of the studios are using AI to make movies for various reasons such as getting the actors out of danger, replacing the actors indifferent scenes, forming appealing atmosphere to enhance(增强)the views, etc.Directors and producers are using VFX (Visual effects), animations and AI to makea model that looks like the actor and replaces the actor's place. In particular, AI is used in scenes where actor shave to produce certain stunts (特技)to develop setups in the studio artificially. VFX is used to later change the internal studio backgroundsto adifferent place in the movie.There are many movies with two characters of the same actor. When AI was not a part of the film, editors used different methods to show the two aspects of the same actor in one scene, but now AI is being used to form the second character of the same actor and is being performed to the viewers.By a perfect combination of animation, VFX and AI, realistic models are being created. And the most fun part is the fictitious character can hold the face of the actor but the age, hairstyles, and clothing can be changed to create more enhanced looks according to the movie scene and story. With the help of AI, the directors recreating appealing scenes to enhance the thrill and excitement. InJurassic Park,no dinosaurs were running but with the help of AI and visual effects, we could enjoy the scenes and the atmospheres.The directors and the producers direct to form a green screen including the obstacles and those green screens get replaced with the views that are made from AI and VFX, and the actors make the scenes alive and deliver the most suitable action-packed movie scenes. This method also enhances the viewers' experience, which makes the movie a blockbuster(大片).12. What does the author intend to tell us in paragraph 1?A. How AI helps actors.B. What AI brings to movies.C. Why AI is applied to movies.D. Where AI is made full use of.13. What can we infer from paragraph 3?A. AI can be used as an editor.B. Editors consider AI irreplaceable.C. Editors used many methods to replace AI.D. AI makes what used to be complex scenes easier.14. What's the author's attitude to using VFX, animations and AI in movies?A. Supportive.B. Sceptical.C. Unconcerned.D. Enthusiastic.15. Which of the following could be the best title for thetext?A. What AI Brings Out Hollywood MoviesB. Why AI Is Applied to Hollywood MoviesC. Which Hollywood Movies Make Much Use of AID. How AI Is Being Applied to Hollywood Movies第二节(共5小题;每小题2分,满分10分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。
福建省晋江一中、华侨中学2020学年七年级历史上学期期中模拟考试试题(无)新人教版

福建省晋江一中、华侨中学2020 学年七年级历史上学期期中模拟考试一试题( 考:45 分;卷分: 100 分;考形式:、开卷合。
)一、(本大有20 小,每小 2 分,共40 分。
在每出的四个中,只有一是最切合意的,将所答案填入后边的表格内,否不得分。
)1.“孔雀去回悠,玉雪山,耀着光,秀江,人在路上。
”被誉“彩云之南”的云南不有着美的景,怡人的天气,更有悠长的史,里曾生活着我国境内已知的最早人()A. 元人 B.北京人 C.山洞人 D.河姆渡原始居民2.“我来自元,你来自周口,起你毛茸茸的手,我直立行走。
” 首在网上流的句,我国境内的先人蒙上了一神奇而浪漫的薄。
以下先人中,生活在北京周口店的是()A.元人B.北京人 C .半坡人 D .河姆渡人3.袁隆平培养的交水稻,世界人民作出了巨大的献。
中国是“水稻的故”,以下址能明一点的是()4.七年( 1)班班委,老欣欣同学做班,她却推能力比、大家都服气的小明做班,同学深有感:是的再啊!()A.争 B.禅 C.世 D.暴力5.俗:“洪水无情”,在我国古代,曾生了很大的水灾,造成了巨大灾。
此,有一位英雄人物,花了十三年的,三家而不入,于治好洪水,造福从民。
你能出他是?(A.黄帝B.C.舜D.禹6. 有位同学他的姓和中国史上的第一个王朝的名称一,他姓什么()A.黄 B. C.夏 D.秦7. 如所示两个史人物作一比,可得出正确是()..)A.他都是王朝的第一个君主B.他都是中国史上的明君主C.他都是中国史上的暴君D.他的治都特别仁爱,人民安居8. 参加夏令的同学到达了殷墟,在参的候,解指着一段文字残片告同学:“ 些文字研究商代的史有重要的价。
”由此判断,种文字是()A. 刻画符号B.甲骨文C.金文D.小篆9. 香港某中学史教材《新理中国史·中四上》中提到:“周天子拥有‘一尊’的治地位,侯必听从天子的命令。
”资猜中的“ 侯” 生于()A. 世制B.分封制C.郡制D.奴隶制10.右反应了商代治者()A. 成立了大B.行安政策C. 拟订了酷刑法D.行礼教化11.以下中,属于西周国家的治的有()①天子② 侯③卿医生④士⑤老百姓⑥奴隶A.①②③B.①②③④C.①②③④⑤ D .①②③⑤⑥12.《· ·木瓜》:“投我以木瓜,之以琚。
晋江一中、华侨中学2020年秋七年级期中数学参考答案

1 ੪ 3 1੪ 䒘 秒੪,䒘 1 䒘, 1 䒘 1;
1
2 ੪ 3 ,3
3
11
13,11
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1
11
13,11
1 3
1 ੪ 1 13,1
1
1 3
2,
3
2 3
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3 1੪
2 3
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2
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2
2 3
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3
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12
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1䒘,1
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1䒘
1,
2
答:P 表示数为
͵,
1,2
1,
2
1.
2
第 3页,共 3页
11
.………………………………………8 分
18.
解:正数集合
2Ǥ3
3 ͵
Ǥ͵ 3
;………………………………………2 分
负数集合 1䒘
12 Ǥ䒘2 1 ;………………………………………4 分
负分数集合 Ǥ䒘2 1 ;………………………………………6 分
非正整数集合 1䒘
19. 解:如图所示.
12 . ………………………………………8 分
㈢以下解答各行右端所标注的分数表示正确做完该步应得的累计分数.
一、选择题:(每小题 4 分,共 40 分)
1. B
2. D
3. A
4. C
5. C
6. C
7. D8. D 9. A 10. B
二、填空题:(每小题 4 分,共 36 分)
11. 百 12. 五三
䒘(写-32 也可以)
1 13. ;
2
14. 2Ǥ 1 11 15. 3 2 3 2 2 16.22, (3n+1)
【18套试卷合集汇总】广东省潮阳区华侨中学2019-2020年英语七上期中模拟试卷

2019-2020学年七上英语期中模拟试卷含答案注意事项:1. 答题前,考生先将自己的姓名、准考证号填写清楚,将条形码准确粘贴在考生信息条形码粘贴区。
2.选择题必须使用2B铅笔填涂;非选择题必须使用0.5毫米黑色字迹的签字笔书写,字体工整、笔迹清楚。
3.请按照题号顺序在各题目的答题区域内作答,超出答题区域书写的答案无效;在草稿纸、试题卷上答题无效。
4.保持卡面清洁,不要折叠,不要弄破、弄皱,不准使用涂改液、修正带、刮纸刀。
二、单项填空(8分)请阅读下面各小题,从题中所给的A、B、C、D四个选项中选出可以填入空白处的最佳选项,并将其填到答题卷的相应位置。
(每小题1分,共8分)( ) 28. —Jim is_______ eight-year-old boy.—Yes, and he is my classmate.A./B. theC. aD. an( ) 29. —Is the book that girl’s?—No, _______ is on the desk. It’s _______ book.A. her; myB. hers; myC. hers; mineD. her; min e( ) 30. —_______________—It’s under the chair.A. Where is my basketball?B. What is that?C. Where are my keys?D. Is it a basketball?( ) 31. —My pen is red. _______ yours, Jack?—It’s green.A. What colorB. How muchC. What aboutD. How old( ) 32. —Eric, is your brother_______?—No, he often can’t find his things.A. goodB. fineC. tidyD. nice( ) 33. —There are some books in my room, _______ you can read one.—_______ I don’t like any of them.A: but; And B. and; And C. and; But D. but; But( ) 34. Look at that man in the photo. He is my father’s brother, my_______.A. cousinB. fatherC. brotherD. uncle( ) 35. —I lost my pencil. I must _______ it.—Oh, what about _______ the teacher for help?A. find; to askB. to find; askingC. to find; to askD. find; asking三、完形填空(25分)A)请先阅读下面短文,掌握其大意,然后从各小题所给的A、B、C、D四个选项中选出可以填入相应空白处的最佳选项,并将其填到答题卷的相应位置。
人教版2020年七年级上学期英语期中考试试卷(I)卷

人教版2020年七年级上学期英语期中考试试卷(I)卷一、单项填空 (共8题;共16分)1. (2分)— Tom is always __________ first to come.— He is working towards __________ better future.A . the, theB . the, aC . a, a2. (2分)Diaoyu Islands ____ part of China since ancient times.A . have beenB . wereC . areD . has been3. (2分)exercise do you need?A . How manyB . How muchC . How oftenD . How long4. (2分)—Whose CD is it?—Miss Lee always listens to music. It must be________.A . heB . sheC . herD . hers5. (2分)—Who Chinese in Class 1 ?—Miss Luo.She always makes her lessons interesting.A . teachesB . speaksC . likesD . knows6. (2分)— Is anyone in the room?— No. It's a(n) room.A . fullB . emptyC . bad7. (2分)—_____ your mother like music?—Yes, ______.A . Do, she doB . Does, she doesC . Does, she likes8. (2分)—Don't listen to music in class again, Mike.—______.A . No, I don'tB . Don't worryC . I don't knowD . Sorry, I won't二、完形填空 (共1题;共1分)9. (1分)完形填空Each of us fails from time to time. If we are wise, having enough experience and knowledge, we will regard these failures (失败) as a necessary and 1 part of learning. But often as parents and teachers, we don't 2_this right (权利) to our children.Donnie was a student in my class. His 3 about failure kept him away from classroom games which other children enjoyed. He 4 answered my questions—he was afraid of making mistakes.I tried my best to build his self-confidence. But nothing changed 5 midterm, when Mary, a new teacher, came. She was young and pretty, and she was loved by every student6 Donnie. She made a big difference to Donnie later.One morning, Donnie copied the math problem clearly and 7, but he missed the fourth problem and began to cry with his head in his arms.I didn't know what to do. Suddenly, a smile 8on Mary's face. From the desk she got a box that9 pencils. “Look, Donnie,” she said gently, kneeling (蹲在) beside him. “I've got something to10 you.” She took out the pencils, one at a time, and placed them on his desk.“See these pencils, Donnie,” she continued. “They 11Mrs. Landon and me. See how the erasersare worn (磨损)? That's because we make mistakes, too. But we erase the mistakes and try again. That's what you12 learn to do, too.”She kissed him and stood up, “here,” she said, “I'll leave one of these pencils on 13desk, so you'll remember that everybody makes mistakes, even teachers.” Donnie looked up with 14in his eyes and a smile.The pencil became Donnie's prize. That, together with Mary's encouragement, gradually made him understand 15the meaning of making mistakes is ---it's all right to make mistakes as long as you erase them and try again.(1)A . similarB . activeC . importantD . interesting(2)A . offerB . passC . sendD . lend(3)A . spiritB . worryC . excitementD . pleasure(4)A . alwaysB . usuallyC . oftenD . seldom(5)A . sinceB . becauseC . untilD . although(6)A . includingB . exceptC . withoutD . with(7)A . simplyB . carelesslyC . casuallyD . carefully(8)A . appearedB . frozeC . disappearedD . lost(9)A . was made ofB . was covered byC . was filled withD . was close to (10)A . tellB . showC . askD . thank(11)A . come toB . prefer toC . point atD . belong to(12)A . mightB . couldC . mustD . can't(13)A . yourB . hisC . herD . my(14)A . hateB . loveC . fearD . sadness(15)A . howB . whyC . whereD . what三、选词填空 (共1题;共1分)10. (1分)用方框中所给单词的适当形式填空。
2020年侨香外国语学校七上期中考试

2019-2020学年数学七年级上学期期中模拟试卷(深圳专用)一、单选题(共12题;共24分)1.如果电梯上升5层记为+5.那么电梯下降2层应记为()A. +2B. ﹣2C. +5D. ﹣52.若a、b互为相反数,c为最大的负整数,d的倒数等于它本身,则2a+2b﹣cd的值是()A. 1B. ﹣2C. ﹣1D. 1或﹣13.下列说法正确的是()个a、最大的负整数是-1 ;b、绝对值等于本身的数是正数;c、有理数分为正有理数、负有理数和零;d、数轴上表示-a的点一定在原点左边;e、在数轴上7与9之间的有理数是8.A. 2B. 3C. 4D. 54.观察下列等式:21=2,22=4,23=8,24=16,25=32,26=64,27=128,…,解答下面问题:2+22+23+24+…+22019﹣1的末位数字是()A. 0B. 3C. 4D. 85.中国倡导的“一带一路”建设将促进我国与世界各国的互利合作,根据规划,“一带一路”地区覆盖总人口约为4 400 000 000人,将这个数用科学记数法表示为()A. B. C. D.6.己知a=5,|b|=8,且满足a+b<0,则a-b的值为()A. 13B. -13C. 3D. -37.下列平面展开图是由5个大小相同的正方形组成,其中沿正方形的边不能折成无盖小方盒的是()A. B. C. D.8.有下列四个算式:①(﹣5)+(+3)=﹣8;②﹣(﹣2)3=6;③;④.其中,正确的有()A. 0个B. 1个C. 2个D. 3个9.计算2m2n-3m2n的结果为( )A.-1B.-23C.-m2nD.-6m4n210.用一个平面截下列几何体,截面可能是三角形的是()①正方体②球体③圆柱④圆锥A.①B.①②C.①④D.①③④11.数轴上的点A到-2的距离是6,则点A表示的数为()A. 4或-8B. 4C. -8D. 6或-612.如果单项式3a n b2c是5次单项式,那么n的值为( )A.2B.3C.4D.5二、填空题(共4题;共4分)13.若 + 2=0,则xy=________14.李明的练习册上有这样一道题:计算|(-3)+▉|,其中“▉”是被墨水污染而看不到的一个数,他翻看了后边的答案得知该题的计算结果为6,那么“▉”表示的数应该是________.15.请在〇中填入最大的负整数,△中填入绝对值最小的数,□中填入大于-5且小于3的整数的个数,并将计算结果填在下边的横线上。
2019-2020学年广东省深圳市福田区福田区侨香外国语学校七下期中数学试卷

2019-2020学年广东省深圳市福田区福田区侨香外国语学校七下期中数学试卷1.(2020·深圳市福田区·期中)一本笔记本5元,买x本共付y元,则5和y分别是( )A.常量,变量B.变量,变量C.常量,常量D.变量,常量2.(2020·深圳市福田区·期中)某种植物细胞的直径约为0.00012mm,用科学计数法表示这个数为( )mm.A.1.2×104B.12×10−3C.1.2×10−3D.1.2×10−43.(2020·深圳市福田区·期中)下列运算正确的是( )A.3a+2a=5a2B.(−3a3)2=9a6C.a6÷a2=a3D.(a+2)2=a2+44.(2020·深圳市福田区·期中)在弹性限度内,弹簧挂上物体后会伸长,测得弹簧的长度y(cm)与所挂物体的质量x(kg)之间有如下表关系:x(kg)01234⋯y(cm)1010.51111.512⋯下列说法不正确的是( )A.y随x的增大而增大B.所挂物体质量每增加1kg弹簧长度增加0.5cmC.所挂物体为7kg时,弹簧长度为13.5cmD.不挂重物时弹簧的长度为0cm5.(2020·深圳市福田区·期中)下列各式中不能用平方差公式计算的是( )A.(x−y)(−x+y)B.(−x+y)(−x−y)C.(−x−y)(x−y)D.(x+y)(−x+y)6.(2020·深圳市福田区·期中)如图,直线a∥b,点B在直线b上,且AB⊥BC,∠1=55∘,那么∠2的度数是( )A.20∘B.30∘C.35∘D.50∘7.(2020·深圳市福田区·期中)如果x2+kx+9是一个完全平方式,那么k的值为( )A.3B.±3C.6D.±68.(2020·深圳市福田区·期中)如图,边长为a的大正方形剪去一个边长为b的小正方形后,将剩余部分通过割补拼成新的图形.根据图形能验证的等式为( )A.a2−b2=(a−b)2B.a2−b2=(a+b)(a−b)C.(a−b)2=a2−2ab+b2D.(a+b)2=a2+2ab+b29.(2020·深圳市福田区·期中)如图,已知点E在BC的延长线上,则下列条件中不能判断AB∥CD的是( )A.∠B=∠DCE B.∠BAD+∠D=180∘C.∠1=∠4D.∠2=∠310.(2020·深圳市福田区·期中)一水池放水,先用一台抽水机工作一段时间后停止,然后再调来一台同型号抽水机,两台抽水机同时工作直到抽干.设从开始工作的时间为t,剩下的水量为S.下面能反映S与t之间的关系的大致图象是( )A.B.C.D.11.(2020·深圳市福田区·期中)下列说法:①相等的角是对顶角;②同位角相等;③过一点有且只有一条直线与已知直线平行;④直线外一点到这条直线的垂线段的长度,叫做点到直线的距离;其中正确的有( )个A.0B.1C.2D.312.(2020·深圳市福田区·期中)观察下列各式及其展开式:(a+b)2=a2+2ab+b2,(a+b)3=a3+3a2b+3ab2+b3,(a+b)4=a4+4a3b+6a2b2+4ab3+b4,(a+b)5=a5+5a4b+10a3b2+10a2b3+5ab4+b5,⋯⋯请你猜想(2x−1)8的展开式中含x2项的系数是( )A.224B.180C.112D.4813.(2020·深圳市福田区·期中)如果一个角是120∘,那么这个角的补角是.14.(2020·深圳市福田区·期中)若(a2)3=a m⋅a,则m=.15.(2020·深圳市福田区·期中)已知长方形的周长为16cm,其中一边长为x cm,面积为y cm2,则这个长方形的面积y与x之间的关系可表示为.16.(2020·深圳市福田区·期中)把一张长方形纸片ABCD沿EF折叠后ED与BC的交点为G,D,C分别在M,N的位置上,若∠EFG=40∘,则∠2=.17.(2020·深圳市福田区·期中)计算:(1) 2a(3a+2)(2) (4m 3−2m 2)÷(−2m )(3) −12018−(12)−2−(3.14−π)0(4) 用乘法公式计算:198218. (2020·深圳市福田区·期中)先化简再求值 [(x +y )2−y (2x +y )−8xy ]÷(2x ) 其中 x =2,y =−12.19. (2020·深圳市福田区·期中)补全下列推理过程:如图,EF ∥AD ,∠1=∠2,∠BAC =80∘.求 ∠AGD 的度数.∵EF ∥AD (已知),∴∠2= ( ),又 ∵∠1=∠2(已知),∴∠1=∠3(等量代换),∴AB ∥ ( ),∴∠BAC + =180∘(两直线平行,同旁内角互补),∵∠BAC =80∘(已知),∴∠AGD = .20. (2020·深圳市福田区·期中)解答下列各题:(1) a m =2,a n =5,求 a 2m−n 的值.(2) (x +1)(x −p )=x 2+qx −3,求 p q 的值.21. (2020·深圳市福田区·期中)小明骑单车上学,当他骑了一段路时,想起要买某本书,于是又折回到刚经过的某书店,买到书后继续去学校.以下是他本次上学所用的时间与路程的关系示意图.根据图中提供的信息回答下列问题:(1) 小明家到学校的路程是米.(2) 小明在书店停留了分钟.(3) 本次上学途中,小明一共行驶了米.一共用了分钟.(4) 我们认为骑单车的速度超过300米/分就超过了安全限度.问:在整个上学途中哪个时间段小明的骑车速度最快,速度在安全限度内吗?22.(2020·深圳市福田区·期中)已知:如图,点E在直线DF上,点B在直线AC上,∠1=∠2,∠3=∠4.(1) 求证:BD∥CE.(2) 若∠A=40∘,求∠F的值.23.(2020·深圳市福田区·期中)AB∥CD,C在D的右侧,BE平分∠ABC,DE平分∠ADC,BE,DE所在直线交于点E.∠ADC=70∘.(1) 求∠EDC的度数.(2) 若∠ABC=30∘,求∠BED的度数.(3) 将线段BC沿DC方向平移,使得点B在点A的右侧,其他条件不变,若∠ABC=n∘,求∠BED的度数(用含n的代数式表示).答案1. 【答案】A2. 【答案】D3. 【答案】B4. 【答案】D5. 【答案】A【解析】A.(x−y)(−x+y)=−(x−y)(x−y),含y的项符号相同,含x的项符号相同,不能用平方差公式计算,故A正确;B.含x的项符号相同,含y的项符号相反,能用平方差公式计算,故B错误;C.含y的项符号相同,含x的项符号相反,能用平方差公式计算,故C错误;D.含y的项符号相同,含x的项符号相反,能用平方差公式计算,故D错误.6. 【答案】C【解析】∵AB⊥BC,∴∠ABC=90∘,∴∠3=180∘−90∘−∠1=35∘,∵a∥b,∴∠2=∠3=35∘.7. 【答案】D【解析】∵x2+6x+9或x2−6x+9都是完全平方式,∴k的值为+6或−6,∴答案为D.8. 【答案】B【解析】图中阴影部分的面积等于两个正方形的面积之差,即为a2−b2;剩余部分通过割补拼成的平行四边形的面积为(a+b)(a−b),∵前后两个图形中阴影部分的面积相等,∴a2−b2=(a+b)(a−b).9. 【答案】D10. 【答案】D【解析】由题意可知:当一台抽水机工作时,剩下的水S减少的速度比两台抽水机工作时减少的速度更慢,但中途有一段时间停止.11. 【答案】C【解析】第一个命题相等的角不一定是对顶角,因为对顶角还要求两边在同一直线上,故这个命题是错误的.第二个命题同位角只有在两个直线平行的时候,才能够相等,故这个命题是错误的.第三个命题过一点有且只有一条直线与已知直线平行是正确的,为真命题.第四个命题直线外一点到这条直线的垂线段的长度叫做点到直线的距离是正确的,为真命题.12. 【答案】C【解析】∵(a+b)2=a2+2ab+b2,(a+b)3=a3+3a2b+3ab2+b3,(a+b)4=a4+4a3b+6a2b2+4ab3+b4,(a+b)5=a5+5a4b+10a3b2+10a2b3+5ab4+b5,⋯⋯∵(a+b)8=a8+8a7b+28a6b2+56a5b3+70a4b4+56a3b5+28a2b6+8ab7+b8,令a=2x,b=−1,∴(2x−1)8展开式中含x2项为第7项28⋅(2x)2⋅(−1)6=112x2,∴x2系数为112.13. 【答案】60°【解析】∵一个角是120∘,∴该角的补角是180∘−120∘=60∘.14. 【答案】5【解析】(a2)3=a m⋅a,∴a6=a m+1,∴m+1=6,∴m=5.15. 【答案】y=(8−x)x【解析】∵长方形的周长为16cm,其中一边长为x cm,∴另一边长为:(8−2)cm.16. 【答案】80∘【解析】∵长方形纸片ABCD的边AD∥BC,∴∠3=∠EFG=40∘,根据翻折的性质,∠1=180∘−2∠3=180∘−2×40∘=100∘,又∵AD∥BC,∴∠2=180∘−∠1=180∘−100∘=80∘.17. 【答案】(1) 原式=6a 2+4a .(2) 原式=−2m 2(1−2m )÷(−2m )=m (1−2m )=−2m 2+m .(3) 原式=−1+22−1=−2+4=2.(4) 原式=(100−2)2=1002−22=10000−4=9996.18. 【答案】 原式=(x 2+2xy +y 2−2xy −y 2−8xy )÷(2x )=(x 2−8xy )÷(2x )=12x −4y.将 x =2,y =−12 带入上式,原式 =12×2−4×(−12)=3.19. 【答案】 ∠3;(两直线平行,同位角相等);DG ;(内错角相等,两直线平行);∠AGD ;100∘.20. 【答案】(1) ∵a m =2,a n =5,∴a 2m−n =(a m )2÷a n =22÷5=45.(2) ∵(x +1)(x −p )=x 2+(1−p )x −p =x 2+qx −3,∴{1−p =q,p =3,∴p =3,q =−2,∴p q =3−2=19.21. 【答案】(1) 1500(2) 4(3) 2700;14(4) 当时间在 0∼6 分钟内时,速度为:1200÷6=200 米/分钟,当时间在 6∼8 分钟内时,速度为:(1200−600)÷(8−6)=300 米/分钟,当时间在 12∼14 分钟内时,速度为:(1500−600)÷(14−12)=450 米/分钟,∵450>300,∴ 在整个上学途中 12∼14 分钟时间段小明的汽车速度最快,速度不在安全限度.【解析】(2) 小明在书店停留了 12−8=4(分钟).(3) 本次上学途中,小明一共行驶了:1500+(1200−600)×2=2700(米),一共用了14分钟.22. 【答案】(1) ∵∠1=∠2,∠2=∠DGF,∴∠1=∠DGF,∴BD∥CE.(2) ∵BD∥CE,∴∠3+∠C=180∘,又∵∠3=∠4,∴∠4+∠C=180∘,∴DF∥AC,∴∠A=∠F,∠A=40∘,∴∠F=40∘.23. 【答案】(1) ∵DE平分∠ADC,∠ADC=70∘,∴∠EDC=12∠ADC=35∘.(2) ∵BE平分∠ABC,∴∠CBE=12∠ABC=15∘,∵AB∥CD,∴∠BCD=∠ABC=30∘,∴∠CBE+∠BED=∠EDC+∠BCD,即15∘+∠BED=35∘+n∘,解得∠BED=50∘.(3) 分三种情况:如图所示,过点E作EF∥AB:∵BE平分∠ABC,DE平分∠ADC,∠ABC=n∘,∠ADC=70∘,∴∠ABE=12∠ABC=12n∘,∠CDG=12∠ADC=35∘,∵AB∥CD,∴AB∥CD∥EF,∴∠BEF=∠ABE=12n∘,∠CDG=∠DEF=35∘,∴∠BED=∠BEF−∠DEF=12n∘−35∘.如图所示,过点E作EF∥AB:∵BE平分∠ABC,DE平分∠ADC,∠ABC=n∘,∠ADC=70∘,∴∠ABE=12∠ABC=12n∘,∠CDE=12∠ADC=35∘,∵AB∥CD,∴AB∥CD∥EF,∴∠BEF=180∘−∠ABE=180∘−12n∘,∠CDE=∠DEF=35∘,∴∠BED=∠BEF+∠DEF=180∘−12n∘+35∘=215∘−12n∘.如图所示,过点E作EF∥AB:∵BE平分∠ABC,DE平分∠ADC,∠ABC=n∘,∠ADC=70∘,∴∠ABG=12∠ABC=12n∘,∠CDE=12∠ADC=35∘,∵AB∥CD,∴AB∥CD∥EF,∴∠BEF=∠ABG=12n∘,∠CDE=∠DEF=35∘,∴∠BED=∠BEF−∠DEF=12n∘−35∘.综上所述,∠BED的度数为12n∘−35∘或215∘−12n∘.。
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20.已知数轴上有 A, B,C 三点,分别代表- 24,- 10, 10,两只电子蚂蚁甲,乙分别从 同时相向而行,甲的速度为 4 个单位/秒.
A, C 两点
( 1)问多少秒后,甲到 A, B,C 的距离和为 40 个单位?
( 2)若乙的速度为 6 个单位/秒,两只电子蚂蚁甲,乙分别从
A,C 两点同时相向而行,问甲,乙
12.如果单项式 3anb 2c 是 5 次单项式,那么 n 的值为 ( )
A.2B.3
C.4
D.5
二、填空题(共 4 题;共 4 分)
D. 个3 D. 6或- 6
13. 若
+
2=0,则 xy=________
14.李明的练习册上有这样一道题:计算 | ( -3)+▉ | ,其中 “▉ ”是被墨水污染而看不到的一个数,他
A. 1
B﹣. 2
C﹣. 1
D. 或1 ﹣ 1
3.下列说法正确的是( )个
a、最大的负整数是 -1 ;b、绝对值等于本身的数是正数; c、有理数分为正有理数、负有理数和零;
d、数轴上表示 -a 的点一定在原点左边; e、在数轴上 7 与 9 之间的有理数是 8.
A. 2
B. 3
C. 4
D. 5
4.观察下列等式: 21=2,22=4,23=8,24=16,25=32,2 6=64,27=128,…,解答下面问题: 2+22+23+24+… +22019
③有理数分为正有理数、负有理数和零,故③符合题意; ④数轴上表示 - a 的点可能在原点的左边、右边,故④不符合题意;
⑤在数轴上 7 与 9 之间的有理数有无数个,故⑤不符合题意; 故答案为: A.
A.- 1B.-23C.- m2nD.- 6m 4n2
C. 个2
10.用一个平面截下列几何体 ,截面可能是三角形的是( )
①正方体②球体③圆柱④圆锥
A. ① B. ①② C. ①④ D. ①③④
11.数轴上的点 A 到- 2 的距离是 6,则点 A 表示的数为( )
A. 4 或- 8
B. 4
-C8.
称为 x 的差倒数,如 2 的差倒数是
=﹣1 ,﹣ 1 的差倒数
为
,现已知 x1=﹣ ,x2 是 x1 的差倒数, x3 是 x2 的差倒数, x4 是 x3 的差倒数, …,依此类
推,则 x2017=________.
三、计算题(共 7 题;共 60 分)
17. 计算与化简: ( 1)(- 9)-(- 7)+(- 6)-(+ 4)-(- 5) ( 2)
﹣ 1 的末位数字是(
)
A. 0
B. 3
C. 4
5.中国倡导的 “一带一路 ”建设将促进我国与世界各国的互利合作,根据规划,
人口约为 4 400 000 000 人,将这个数用科学记数法表示为(
)
D. 8 “一带一路 ”地区覆盖总
A.
B.
C.
D.
6.己知 a=5,|b|=8 ,且满足 a+b<0,则 a-b 的值为( )
则原式 =2( a+b)﹣ cd=1 或﹣ 1. 故选 D
【分析】 根据相反数, 最大的负整数为﹣ 1,以及倒数的定义求出 a+b,cd 的值, 即可求出原式的值.
3.【答案】 A 【考点】 数轴及有理数在数轴上的表示,绝对值及有理数的绝对值,有理数及其分类
【解析】 【解答】①最大的负整数是 - 1,故①符合题意; ②绝对值等于本身的数是非负数,故②不符合题意;
在数轴上的哪个点相遇?
( 3)在( 1)( 2)的条件下,当甲到 A、 B、 C 的距离和为 40 个单位时,甲调头返回.问甲,乙还
能在数轴上相遇吗?若能,求出相遇点;若不能,请说明理由. 21.已知多项式 A,B,其中 A=x2﹣ 2x+1,小马在计算 A+B 时,由于粗心把 A+B 看成了 A﹣ B 求得结果 为﹣ 3x2﹣ 2x﹣ 1,请你帮小马算出 A+B 的正确结果.
翻看了后边的答案得知该题的计算结果为
6,那么 “▉ ”表示的数应该是 ________.
15.请在〇中填入最大的负整数, △中填入绝对值最小的数, □中填入大于 -5 且小于 3 的整数的个数,
并将计算结果填在下边的横线上。(〇-△)
×□ =_______._
16.若 x 是不等于 1 的实数,我们把
2019-2020 学年数学七年级上学期期中模拟试卷(深圳专用)
一、单选题(共 12 题;共 24 分)
1.如果电梯上升 5 层记为 +5.那么电梯下降 2 层应记为( )
A. +2
B﹣. 2
C. &, c 为最大的负整数, d 的倒数等于它本身,则 2a+2b﹣ cd 的值是( )
22. 已知有理数
在数轴上的位置如图,化简:
23. 观察下列等式:①
﹣ ;②
= ﹣ ;③
= ﹣ , …按照此规律,解决
下列问题: ( 1)完成第④个等式; ( 2)写出你猜想的第 n 个等式(用含 n 的式子表示),并证明其正确性.
答案解析部分
一、单选题
1.【答案】 B 【考点】 正数和负数的认识及应用 【解析】 【解答】解:∵电梯上升 5 层记为 +5,
( 3)
18. 先化简,再求值: ( 1) 4a+3a2- 3- 3a3-(- a+ 4a3),其中 a=- 2; ( 2) 2x2y-2xy2-[( - 3x2y2+ 3x2y)+ (3x2y2- 3xy2)] ,其中 x=- 1, y= 2. 19. 一个由几个相同的小立方体搭成的几何体的俯视图如图所示,方格里的数字表示该位置的小立方 体的个数,请你画出这个几何体的主视图和左视图.
A. 13
B. -13
C. 3
D. -3
7.下列平面展开图是由 5 个大小相同的正方形组成, 其中沿正方形的边不能折成无盖小方盒的是
()
A.
B.
C.
D.
8.有下列四个算式: ①(﹣ 5) +(+3) =﹣8 ; ②﹣(﹣ 2) 3=6;
③
;
④
.
其中,正确的有(
)
A. 0 个
B. 个1
9.计算 2m2n- 3m 2n 的结果为 ( )
∴电梯下降 2 层应记为:﹣ 2. 故答案为: B.
【分析】根据正数与负数可以表示具有相反意义的量,故电梯上升
5 层记为 +5,电梯下降 2 层应记
为:﹣ 2。
2.【答案】 D 【考点】 相反数及有理数的相反数,有理数的倒数,代数式求值 【解析】 【解答】解:根据题意得: a+b=0, c=﹣1, d=1 或﹣ 1,