第1课时分层训练
冀教版英语七年级上册_Lesson_1_课时分层训练
Unit 1School and Friends课时分层训练(一)[Lesson 1]课内基础自测Ⅰ.根据句意及首字母或汉语提示完成句子1.H ________! My name is Li Ming.2.My name is Jim. Nice to m ________ you.3.—W________ is your name?—My name is Li Hong.4.Jenny is from ________ (加拿大).5.—How are you?—I'm good. ________(谢谢).Ⅱ.用所给单词的适当形式填空1.I ________(be) Mary.2.Nice ________(meet) you.3.—How ________(be) you?—I am fine.4.—What's ________(you) name?—________(I) name is Li Ming.Ⅲ. 从B栏中选出与A栏中的句子相对应的答语A B()1. Hello, Li Ming! A. I'm fine.()2. How are you? B. My name is Danny. ()3. Nice to meet you. C. I am from Canada. ()4. What's your name? D. Hi, Wang Peng!()5. Where are you from? E.Nice to meet you, too.课后巩固提升Ⅰ.单项填空()1.—What ________ your name?—________ name is Li Ping.A.is; My B.is; His C.is; Her D.are; My ()2.She ________ from America(美国). She is American.A.am B.is C.are D./()3.—How ________ Tom?—He ________ fine.A.am; is B.is; is C.is; are D.are; are ()4.The boy's name ________ Peter.A.is B.am C.are D.be ()5.Danny is from Canada. I'm ________ Canada, ________.A.to; too B.in; too C.from; too D.from; to Ⅱ.连词成句1.your, what, name, is________________________________________________________________________? 2.China, I'm, from________________________________________________________________________. 3.are, you, how________________________________________________________________________? 4.meet, nice, you, to________________________________________________________________________. 5.Jenny, is, name, my________________________________________________________________________.Ⅲ.完形填空Bill: __1__!Zhao Hui: Hi!Bill: What's __2__ name?Zhao Hui: __3__ name is Zhao Hui. And you?Bill: My name is Bill.__4__ to meet you.Zhao Hui: Nice to meet you, __5__. Where__6__ you from?Bill: I __7__ from Canada.Zhao Hui: Oh, you __8__ from Canada. I am__9__ China.Bill: We __10__ friends now.()1.A. Good B. Sorry C.OK D. Hello()2.A. your B. you C. Your D. My()3.A. my B. My C. your D.I()4.A. Nice B. nice C. Good D. good()5.A. to B. too C.two D. /()6.A. is B.are C.am D.do()7.A. are B. is C. am D. be()8.A. is B. are C. be D. am()9.A. form B. come C. comes D. from()10.A. be B. is C. am D. are详解详析课内基础自测Ⅰ.1.Hello/Hi 2.meet 3.What4.Canada 5.ThanksⅡ.1.am 2.to meet 3.are 4.your; MyⅢ.1—5DAEBC课后巩固提升Ⅰ.1.A“your name”表示单数,所以谓语动词用is;问句询问的是“你的名字”,答语根据语境应用第一人称回答。
部编六年级上册语文 第1课 草原 分层作业 有答案
第1课草原第一课时分层作业
参考答案:第一课时一、基础类
1.(1)绿毯马蹄 měng 衣裳彩虹 Xuàn lè微笑
(2)比喻蒙古族同胞的民族服装色彩艳丽,表现了蒙古族人民的热情好客。
2. 一碧千里群马疾驰翠色欲流襟飘带舞
(1)翠色欲流
(2)襟飘带舞
3. 静寂平静宁静
二、提升类
1.清新晴朗
2.示例:和煦的阳光下,牛儿在草地上吃草,鸟儿在枝头上歌唱,鱼儿在水里自由自在地嬉戏。
我闭上双眼,仿佛自己的心灵也在这天地间无忧无虑地徜徉。
三、拓展类
1.录制视频时注意读准字音,读出感情。
2.制作书签,要图文并茂。
第1课草原第二课时分层作业
参考答案:
第二课时
一、基础类
1.A
2. D
3. (1)去掉“悦耳的歌声”(2)示例:静寂的田野热闹起来:欢呼声,车声,马蹄声,响成一片。
二、提升类
1.一碧千里、翠色欲流、绿浪滔天
2.BD
3.√×√√
4.初入草原,梁衡先生的感受是大地间豁然变得开阔,感受自己已融入其中;老舍先生笔下的草原空气清新,天空明朗,让人心情愉悦。
三、拓展类
紧紧地握住我们的手,两眼深情地望着我们拿出一筐筐特产,硬要塞到我们的手中再次跳起了优美的舞蹈,欢送我们凝望着草原上一切美丽的人与景。
人教版八年级英语上册 Unit 1 第1课时 Section A (1a-2c)分层作业
Unit 1 Where did you go on vacation?Section A(1a-2c) 第1课时(分层作业)基础达标一、汉译英呆在家里_________去纽约市_________拜访我的叔叔_________ 去夏令营_________去爬山_________ 去海滩_________参观博物馆_________ 大多数时间___________好久不见__________ 相当多____________二、根据要求完成句子1.“你去夏令营了吗?”“不,我没有去。
”—Did you go to ________ ________?—No, ________ ________.2.上个月我去了海滩。
I ________ ________ ________ ________ last month.3.上周我拜访了我的老师。
I ________ my teacher ________ .4.昨天我待在家里,没有出去。
I________ ________ and didn’t go out yesterday.5.朱莉昨天去中心公园了吗?Julie________ to Central Park yesterday?能力提升三、单项选择1.—I didn't hear you come in just now.—That's good. We tried any noise, for you were sleeping.A. not makeB. not to makeC. to makeD. making2.—Did you read today’s newspaper?—No, I didn’t. Is there________ in it?A.something important B.anything special C.new anything D.interesting something3.—Where did you go on vacation?—We ________ to Hefei.A.am going B.will go C.went D.go 4.—What a nice watch! When ________ you ________it?—Three days ago.A.do; buy B.did; boughtC.were; buy D.did; buy5.Everything _____ free. Good luck to you!A.am B.is C.are D.be四、用所给单词的正确形式填空1.Gina and Tim _______ (come)to China last year.2.He ________(go)to see a film yesterday evening.3.I ________(buy)a toy bear for my son this morning.4.I _________(stay)at home and ________(watch)TV last night.5.There ________(be)enough milk at home last week,wasn't there?五、句型转换1. Tom was at home yesterday. (改为一般疑问句)_________Tom home yesterday ?2. Tom went to the library last weekend. (对画线部分提问)_________ __________ Tom ________ last weekend?3. I got up at seven o’clock this morning.(对画线部分提问)________ ________ ________ you _________ ________this morning?4. Grace played volleyball after school yesterday. (对画线部分提问)Grace ________after school yesterday?5. Mr. Smith found something new in today’s newspaper. (改为否定句)Mr. Smith ________ ________ new in today’s newspaper.拓展训练六、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,在空白处填入一个适当的词或使用括号中词语的正确形式填空。
九全英语 Unit 1 第1课时 分层训练 Section A (1a-2d)课后练习(含答案)
九全英语 Unit 1 第1课时分层训练 Section A (1a-2d)课后练习一、单项选择(共5小题)1. Jim and his brother went on a holiday with a cousin of _____.A.heB.hisC.he'sD.himself2. "When we were students at school, we read, played and exercised more." My parents said. The underlined part means _____.A.had sportsB.did our lessonsC.studiedD.had English exercises3. If you _____ a lot, you will be healthy.A.exerciseB.will exerciseC.exercisedD.are exercising4. —I think I'll take a bus to the meeting.—The bus? If you _____, you will be late.A.doB.have doneC.will doD.does5. —Can you tell me why you learn English so well?—It's very simple. _____ you work, _____ grades you will get.A.The harder; the bestB.The hard; the betterC.Harder; betterD.The harder; the better二、阅读理解-阅读回答问题(共1小题)Hello, everyone! What are you going to be when you grow up? How are you going to do that? Let's discuss about it.Zhang Hong, 13, from Class One, Grade Seven:I want to be a pilot when I grow up. So now I need to look after my eyes very well and I will have to take flying lessons. I really enjoy having fun in different places in the world.Li Ping, 15, from Class Three, Grade Nine:My dream is to be an engineer in the future. I hope to build the longest bridge in the world. I am going to work hard at math and physics.Lin Tao, 14, from Class Two, Grade Eight:I am interested in cooking. So, I want to be a cook when I grow up. I am going to a cooking school. I hope I can work as a cook in the five-star hotel in Beijing in the future.Li Dong, 15, from Class One, Grade Nine:I like playing basketball and I am good at playing it. I want to be a famous basketball player like Yao Ming in the future. I know it isn't easy, but I'm sure I'll be successful.Zhang Fei, 14, from Class Five, Grade Eight:I like acting very much and I'm interested in it. So, I want to be an actor when I grow up. For this dream, I'm going to take acting lessons. I hope I can be famous one day.6. What is Zhang Hong's dream?_____7. What is Li Ping going to do for his dream?_____8. Where is Lin Tao going to work in the future?_____9. Which class and grade is Li Dong in?_____10. What does Zhang Fei want to be in the future?_____三、句子填空(共5小题)11. He was aware of the power of _____ and technology after taking part in this activity. (know)12. This island offers different _____ of scenery and wildlife. (variety)13. It's _____ to accurately tell what will happen in the future. (possible)14.hardly eat it. I eat fruit and vegetables every day. _____ they are not very delicious, but they are good _____ health. Second, I exercise every day. It is said that if people run every day, they will have healthier hearts than _____ , so I run for about thirty minutes every morning. _____ , I have good living habits. I try _____ eight hours every night. That _____ me to be energetic (精力充沛的) the next day. And I can study better and _____ good grades (成绩).What do you think of my lifestyle? Can you learn something from it?15. There were many people on a bus. An old man _____ (look) here and there. He wanted to find _____ empty seat. Then he saw one and went to it. A small bag was on the seat. And a young man was beside it."Is this seat empty?" asked the old man."No, it's _____ an old woman. She went to buy some bananas," said the young man."Well, let me sit here, please. I'll leave here when she _____ (come) back," replied the old man.After a few minutes, the bus started. The old woman _____ (not come), but her bag was here. "Let me give her the bag." Then the old man threw the bag out of the bus window.The young man jumped up and shouted, "Don't throw! It's my bag!"四、完成句子(共5小题)16. 我想要一双新鞋子。
人教版七年级英语上:Starter Unit 1 Good morning(第1课时)分层训练(含答案)
Starter Unit 1 Good morning!第1课时分层训练[1a2e]Ⅰ.字母检测请写出下列字母的左邻右舍(注意大小写)。
1.________ b________ 2.________ D________ 3.________ c________ 4.________ E________ 5.________ e________ 6.________ G________ Ⅱ.词汇(A)根据句意及汉语提示完成句子。
1.Your English is very ________ (好的).2.Good ________ (晚上), Dad!3.I'm ________ (健康的), thanks.4.Good ________ (下午), Bob!5.This________ (光盘) is nice.(B)用方框中所给单词的适当形式填空。
morning, hi, OK, thanks 1.—Hello, Tom. —________,Bob. 2.—Good ________,class!—Good morning, Miss Zhang!3.—How are you, Lisa?—I'm fine, ________.4.—How are you?—I'm ________.Ⅰ.单项填空( )1.下列哪组字母是由三笔写出来的?A.AEH B.BDEC.FGH D.ABD( )2.下列字母中含有相同音素的一组是________。
A.abc B.bcd C.efg D.ach( )3.书写下列字母时,占相同格数的一组是________。
A.ace B.bcdC.fgh D.bcf( )4.字母G的正确读音是________。
A./ɡiː/ B./dʒiː/C./dʒeI/ D./ɡeI/( )5.下午上英语课前,你会和英语老师说“________”A.Good morning, Miss Bai.B.Good afternoon, Miss Bai.C.Good evening, Miss Bai.D.How are you, Miss Bai?( )6.下面哪个是女孩名字?A.Grace B.DaleC.Eric D.Bob( )7.请选出下列英语缩写与意思不相符的一项。
第1课《白鹭》第一课时(分层作业)
3.辨字组词。
嫌赚歉谦
__________弃_________虚_________钱__________意
哨梢稍消
_________微_________失树_________口__________
必做题
提升类
4.选词填空。
精巧精致 精心
(1)港珠澳大桥是伶仃洋上一道亮丽的风景线,中国结、风帆、海豚等桥塔构思________,受到国人追捧。中国结桥塔在设计师的_________设计下,被注入了文化元素,显得更加灵动、________、优雅。
悠然悠闲
(2)爷爷呼着小曲儿________地在潮边散步。不远处,几只鹭鸶在水边站着,有的觅食,有的休息,看起来很________。
5.写出下列语句的修辞方法。
(1)在清水田里时有一两只站着钓鱼,整个的田便成了一幅嵌在玻璃框里的画面。( )
(2)晴天的清晨,每当看见它孤独地站立在小树的绝顶。( )
(3)但是白鹭本身不就是一首优美的歌吗?( )
(4)白鹭实在是一首诗。( )
必做题
拓展类6.阅读材料,完源自练习。白鹭,别名小白鹭、白鹭鸶、白翎鸶、春锄、白鸟等。在中国,白鹭主要分布在长江以南,一般栖息于池塘、湖泊、稻田,以小型动物、昆虫为食。因为白鹭的冠羽和蓑羽可作装饰品,所以不法分子趋之若鹜。再加上白鹭成大群营巢,又无防御能力,致使它的种群数量日趋减少,有些甚至濒临灭绝。
(1)判断对错,对的打“√”,错的打“×”。
①在中国,白鹭主要分布在长江以南。()
②白鹭的冠羽和蓑羽可作装饰品,因此白鹭被大量捕杀,导致它们已经灭绝了。
(2)为保护白鹭写一条宣传语,最能打动人的是()
4.1交通运输(第1课时)(分层练习)-八年级地理上册同步备课系列(人教版) (原卷版)_1
第四章中国的经济发展第一节交通运输(第一课时)【基础题】1.交通运输在经济发展中的地位是()A.基础产业B.主导产业C.经济发展的先行官D.支柱产业2.下列货物的运输对应合理的交通运输方式是()①1吨鲜鱼从珠江三角洲某鱼塘运往香港市区;①100吨大米从九江运往上海;①100吨钢材从武汉运往广州;①两箱急救药品从北京运往拉萨A.公路、铁路、航空、水路B.公路、水路、铁路、航空C.航空、公路、铁路、水路D.铁路、公路、航空、水路3.下列不属于现代运输方式的是()A.火车B.火箭C.飞机D.汽车4.下列关于几种运输方式速度的叙述,正确的是()A.空运最快,水运次之,陆运最慢B.空运最快,陆运次之,水运最慢C.陆运最快,空运次之,水运最慢D.水运最快,空运次之,陆运最慢读“铁路、公路、水运、航空四种交通运输方式特征比较示意图”,完成下面小题。
5.图中甲、乙、丙、丁代表的交通运输方式正确的是()A.甲一一公路B.乙一一水运C.丙一一铁路D.丁一一航空6.从郊区运往城区超市销售的新鲜蔬菜,其主要交通运输方式是()A.甲B.乙C.丙D.丁7.从巴西向上海运输铁矿石,运费最低的运输方式是()A.甲B.乙C.丙D.丁8.中国新四大发明中的“网购”是当下最流行的购物方式,最适合为其服务达到“送货上门”目的的交通运输方式是()A.铁路B.公路C.水运D.航空2022年1月初,俄罗斯诺瓦泰克公司宣布同中国浙江能源天然气集团有限公司签署每年供应“北极液化天然气-2”号项目100万吨液化天然气的协议,为期15年。
俄气公司2020年经“西伯利亚力量”天然气管道向中国供应了41亿立方米天然气。
完成下面小题。
9.天然气采用管道运输,是因为()A.灵活性强B.安全稳定连续性强C.铺设管道占地大D.铺设管道对自然环境没有破坏10.中俄天然气管道投产通气,有利于()①完全取代石油,降低油价①缓解我国能源紧张,保障能源安全①优化能源结构①减少环境污染①带动相关产业的发展A.①①①①B.①①①C.①①①①D.①①①①11.我国发展内河航运和海上运输的良好条件有()①大河多,水量丰富①大陆海岸线绵长曲折,多优良港湾①大河多自西向东流入大海,沟通了内地和沿海地区A.①①B.①①C.①①D.①①①读1979-2014年我国各种运输方式里程变化统计图,完成下面小题。
Unit 2 What a day!课时(1)分层训练-2024-2025学年小学英语六年级上册
Unit 2 What a day!Story time 第1课时一、根据所给首字母提示填空。
1.It’s s today. Let’s go out for a walk.2.Today the weather is very c . We can’t see the sun.3.These grizzly bears like h very much. It’s sweet.st week, the children f kites h in the sky.5.Alex b some sandwiches and strawberries for the picnic yesterday.6.We had a bad cold because we were all w on the way home.二、用所给单词的适当形式填空。
1.It was sunny yesterday. We (play) football in the park.2.There are some (people) in the park.3.I have to (go) home now.4.They don’t like (cloud) days.5.The boy is interesting in the (interest) film.三、根据上下文意思,补全短文。
It was sunny in the morning. I up at half past seven. It was rally late. I had time breakfast. I to school by bike. Mr Green in the classroom.I said to him. Then I opened my bag. Oh, no! I couldn’t my English book.a day!四、根据图片或首字母提示,完成短文。
人教八年级下册英语Unit7同步练习第1课时分层训练(含答案)
⼈教⼋年级下册英语Unit7同步练习第1课时分层训练(含答案)Unit 7What's the highest mountain in the world?第1课时分层训练[Section A1 1a-2d]Ⅰ.根据句意及汉语提⽰写出所缺的单词1.Few plants can grow in the ________(沙漠).2.China is an important country in ________(亚洲).3.They are interested in the ________ (古代的) buildings.4.Animals are humans' friends. We should ________(保护) them.5.What's the________ (⼈⼝) of your hometown?Ⅱ.⽤所给单词的适当形式填空1.That's ________(amaze)! How did they build the Great Wall?2.China has much ________(big) population than Japan.3.This bag is very ________ but that one is even ________.(heavy)4.Titanic was one of ________(popular) movies at that time.5.There are lots of ________(tour) visiting the Great Wall every year.Ⅲ.根据汉语意思及英⽂提⽰翻译句⼦1.世界上最⾼的⼭是什么?(highest)________________________________________________________________________ 2.⼤连有多少⼈⼝?(what)________________________________________________________________________ 3.中国是世界上最古⽼的国家之⼀吗?(one of)________________________________________________________________________ 4.你可以随便问我任何问题。
《草原》第一课时,分层作业
《草原》第一课时,分层作业
《草原》第一课时分层作业
基础作业:
1. 抄写本课的生字词。
2. 熟读课文,概括文章主要内容。
3. 完成课后练习题。
拓展作业:
1. 阅读老舍的其他作品,了解老舍的语言风格。
2. 写一篇关于自己家乡风光的短文,注意运用本课学到的描写手法和修辞手法。
3. 搜集关于草原的资料,了解草原的文化和历史,与同学分享。
挑战作业:
1. 深入阅读课文,分析作者在文章中表达的情感和思想,写一篇读后感。
2. 仿照课文中的一段描写,写一篇短文,描述自己印象深刻的场景或人物。
3. 尝试运用本课学到的写作技巧,写一篇写景的短文,并请老师或同学进行点评。
Unit 1 第1课时 (1a-2d) 分层作业-解析版(人教版)英语七年级上册
Unit 1 My name’s Gina.Section A 1a-2d 分层练习基础达标一、单词速记①我的__________②名字___________③是_____________④时钟__________⑤我_____________⑥遇见;相逢___________⑦你;你们_________⑧什么____________⑨你的;你们的__________【答案】①my②name③is/am/are④clock⑤I ⑥meet⑦you⑧what ⑨your【解析】略二、英汉互译①你叫什么名字? _______________________?②My name is Linda. _________________________.③见到你很高兴. _________________________.④Are you Helen? _________________________.【答案】①What’s your name?②我的名字是琳达。
③Nice to meet you.④你是海伦吗?【解析】略能力提升一、单选题1. is Wang Ting and English name is Grace.A. She; herB. She; sheC. Her; herD. Her; she【答案】A【解析】第一空为主语,表达“她是王婷“,用人称代词,第二空表达“她的英语名“用形容词性物主代词her。
2. —your name, please?—name is John.A. What; IB. What’ s; YourC. What’ s; MyD. What; My【答案】C【解析】第一空询问姓名用句型“What’s your name?“,第二空将第二人称转换为第一人称,并表达的是“我的名字是”,故用形容词性物主代词my。
3. —Is this bike?—No, it’ s Lily’ s. is over there.A. your, MyB. your, MineC. yours, MineD. yours, My【答案】B【解析】第一空表达“你的自行车”故用形容词性物主代词your,第二空表达“我的自行车”故用名词性物主代词mine。
高中数学第1章第1节课时分层训练
分层训练(一)集合A组基础达标(建议用时:30分钟)一、选择题1.已知集合A={1,2,3},B={x|(x+1)(x-2)<0,x∈Z},则A∪B=() A.{1}B.{1,2}C.{0,1,2,3} D.{-1,0,1,2,3}C[B={x|(x+1)(x-2)<0,x∈Z}={x|-1<x<2,x∈Z}={0,1}.又A={1,2,3},所以A∪B={0,1,2,3}.]2.已知集合A={1,2,3},B={2,3},则() 导学号:51062002A.A=B B.A∩B=∅C.A B D.B AD[∵A={1,2,3},B={2,3},∴2,3∈A且2,3∈B,1∈A但1∉B,∴B A.]3.(2017·湖州模拟)已知集合A={x|x2-3x+2=0,x∈R},B={x|0<x<5,x∈N},则满足条件A⊆C⊆B的集合C的个数为()A.1B.2C.3D.4D[由x2-3x+2=0,得x=1或x=2,∴A={1,2}.由题意知B={1,2,3,4},∴满足条件的C可为{1,2},{1,2,3},{1,2,4},{1,2,3,4},共4个.]4.设集合A={y|y=2x,x∈R},B={x|x2-1<0},则A∪B=()A.(-1,1) B.(0,1)C.(-1,+∞) D.(0,+∞)C[由已知得A={y|y>0},B={x|-1<x<1},则A∪B={x|x>-1}.]5.(2017·杭州第一次质检)设集合A={x|x2-2x≥0},B={x|-1<x≤2},则(∁R A )∩B =( )A .{x |-1≤x ≤0}B .{x |0<x <2}C .{x |-1<x <0}D .{x |-1<x ≤0}B [因为A ={x |x ≥2或x ≤0},所以∁R A ={x |0<x <2},(∁R A )∩B ={x |0<x <2},故选B.]6.若x ∈A ,则1x ∈A ,就称A 是伙伴关系集合,集合M =⎩⎨⎧⎭⎬⎫-1,0,12,2,3的所有非空子集中具有伙伴关系的集合的个数是( ) 导学号:51062004A .1B .3C .7D .31B [具有伙伴关系的元素组是-1,12,2,所以具有伙伴关系的集合有3个:{-1},⎩⎨⎧⎭⎬⎫12,2,⎩⎨⎧⎭⎬⎫-1,12,2.] 7.设集合S ={x |x >-2},T ={x |x 2+3x -4≤0},则集合(∁R S )∪T =( )A .(-2,1]B .(-∞,-4]C .(-∞,1]D .[1,+∞)C [∵S ={x |x >-2},∴∁R S ={x |x ≤-2},又T ={x |-4≤x ≤1},∴(∁R S )∪T ={x |x ≤-2}∪{x |-4≤x ≤1}={x |x ≤1}.]二、填空题8.已知集合A ={x |x 2-2x +a >0},且1∉A ,则实数a 的取值范围是________.导学号:51062005(-∞,1] [∵1∉{x |x 2-2x +a >0},∴1∈{x |x 2-2x +a ≤0},即1-2+a ≤0,∴a ≤1.]9.已知集合A ={1,2,3,4},B ={y |y =3x -2,x ∈A },则A ∩B =________. {1,4} [因为集合B 中,x ∈A ,所以当x =1时,y =3-2=1;当x =2时,y =3×2-2=4;当x =3时,y =3×3-2=7;当x =4时,y =3×4-2=10.即B ={1,4,7,10}.又因为A ={1,2,3,4},所以A ∩B ={1,4}.]10.集合A ={x |x <0},B ={x |y =lg[x (x +1)]},若A -B ={x |x ∈A ,且x ∉B },则A -B =________. 导学号:51062006[-1,0) [由x (x +1)>0,得x <-1或x >0,∴B =(-∞,-1)∪(0,+∞),∴A -B =[-1,0).]B 组 能力提升(建议用时:15分钟)1.设集合A =⎩⎨⎧⎭⎬⎫x ⎪⎪⎪ 21-x >1,x ∈R ,B ={}x | y =1-x 2,则(∁R A )∩B = ( )A .{x |-1≤x ≤1}B .{x |-1<x <1}C .{-1,1}D .{1} C [集合A =⎩⎪⎨⎪⎧⎭⎪⎬⎪⎫x ⎪⎪⎪ 21-x >1,x ∈R ={x |-1<x <1},B =⎩⎨⎧⎭⎬⎫x ⎪⎪ y =1-x 2={x |-1≤x ≤1},∴∁R A ={x |x ≤-1或x ≥1}.因此(∁R A )∩B ={-1,1}.]2.(2017·诸暨调研)设全集U =R ,A ={x |x 2-2x ≤0},B ={y |y =cos x ,x ∈R},则图中阴影部分表示的区间是()图1-1-2A.[0,1]B.(-∞,-1]∪[2,+∞)C.[-1,2]D.(-∞,-1)∪(2,+∞)D[A={x|x2-2x≤0}=[0,2],B={y|y=cos x,x∈R}=[-1,1].图中阴影部分表示∁U(A∪B)=(-∞,-1)∪(2,+∞).]3.已知集合A={x|4≤2x≤16},B=[a,b],若A⊆B,则实数a-b的取值范围是________.(-∞,-2][由4≤2x≤16,得2≤x≤4,则A=[2,4],又B=[a,b],且A⊆B.∴a≤2,b≥4,故a-b≤2-4=-2.因此a-b的取值范围是(-∞,-2].]4.设集合A={x|x2-x-6<0},B={x|x-a≥0}.若存在实数a,使得A∩B={x|0≤x<3},则A∪B=________.{x|x>-2}[A={x|-2<x<3},B={x|x≥a}.如图,由A∩B={x|0≤x<3},得a=0,A∪B={x|x>-2}.]。
3.3 物质组成的表示和分析(第一课时)(分层练习)(解析版)_1
3.3 物质组成的表示和分析(第一课时)1.“ ”、“ ”、“ ”分别代表不同的原子,下列图示中能表示单质分子的是( )A .B .C .D .【答案】D【解析】A 、该分子由两种原子构成,属于化合物分子,不符合题意;B 、该分子由三种原子构成,属于化合物分子,不符合题意;C 、该分子由两种原子构成,属于化合物分子,不符合题意;D 、该分子由同种原子构成,属于单质分子,符合题意。
故选D 。
2.下列符号中,表示一个氧分子的是( )A .2OB .2OC .2O -D .22O【答案】A【解析】A 、2O 表示一个氧分子,符合题意;B 、2O 表示两个氧原子,不符合题意;C 、2O -表示氧离子,不符合题意;D 、22O 表示两个氧分子,不符合题意。
故选:A 。
3.下列物质中,含有氧分子的是( )A .CO 2B .SO 2C .H 2O 2D .空气【答案】D【解析】A 、二氧化碳是由二氧化碳分子构成的,不含氧分子,不合题意;B 、二氧化硫是由二氧化硫分子构成的,不含氧分子,不合题意;C 、过氧化氢是由过氧化氢分子构成的,不含氧分子,不合题意;D 、空气中含有氧气,氧气中含有氧分子,符合题意。
故选D 。
4.下列符号只有微观含义的是( )A .2OB .NC .SD .22H O 【答案】D【解析】A 、O 2宏观上可以表示氧气,微观上表示一个氧分子,故A 错误;B 、N 宏观上可以表示氮元素,微观上表示一个氮原子,故B 错误;C 、S 宏观上可以表示硫这种物质,硫元素,微观上表示一个硫原子,故C 错误;D 、2H 2O 只能表示微观上的2个水分子,故D 正确;故选:D 。
5.下列符号中既表示一个原子,又表示该种元素,还表示这种物质的是( )A .OB .2HC .2H 2D .Hg 【答案】D【解析】A 、O 属于气态非金属元素,可表示氧元素,表示一个氧原子,但不能表示一种物质,故选项不符合题意;B 、2H 可表示2个氢原子,不能表示一个原子、一种元素、一种物质,故选项不符合题意;C 、2H 2表示2个氢分子,不能表示一个原子、一种元素、一种物质,故选项不符合题意;D 、Hg 属于金属元素,可表示汞元素,表示一个汞原子,还能表示汞这一物质,故选项符合题意; 故选:D 。
课题3 制取氧气(第1课时)(分层作业)(解析版)_1
课题3 制取氧气第1课时加热高锰酸钾制取氧气【基础达标】1.实验室用高锰酸钾制取氧气不需要用到的仪器是()A.烧杯B.集气瓶C.导管D.酒精灯【答案】A【解析】加热高锰酸钾的方法制取氧气时,要用到酒精灯、铁架台、试管、集气瓶、橡胶塞、导管等仪器,用不到烧杯,故选A。
2.(2024·福建)实验室用于高锰酸钾制取氧气的下列装置或操作中,错误..的是()A.B.C.D.【答案】D【解析】A、高锰酸钾固体需要在加热的条件下分解制取氧气,属于固固加热制气体,试管口要略向下倾斜,防止冷凝水倒流,造成试管炸裂,且试管口要塞一团棉花,防止加热时粉末状物质进入导管,故A正确,不符合题意;B、氧气不易溶于水,故可用排水法来收集,故B正确,不符合题意;C、氧气密度比空气略大,可选择向上排空气法收集,故C正确,不符合题意;D、氧气密度比空气略大,可选择向上排空气法收集,故D错误,符合题意;故选D。
3.(2024·扬州三模)在“氧气的实验室制取与性质”实验中,下列装置或操作不正确...的是()A.用图甲所示的装置检查气密性B.用图乙所示的装置制备氧气C.用图丙所示的装置收集氧气D.用图丁所示的装置对氧气验满【答案】D【解析】A、检查装置的气密性:将导管置于水中,用手紧握试管,观察导管口是否有气泡冒出,有气泡冒出,说明装置气密性良好,图中操作正确,不符合题意;B、给试管中的固体加热时,试管口应略向下倾斜,防止冷凝水倒流,炸裂试管,且用高锰酸钾制取氧气,应在试管口塞一团棉花,防止加热时试管内粉末状物质进入导管,图中操作正确,不符合题意;C、氧气密度比空气大,可用向上排空气法收集,图中操作正确,不符合题意;D、氧气具有助燃性,氧气验满:将带火星的木条放在集气瓶口,木条复燃,说明已经集满,不能伸入集气瓶内部,图中操作不正确,符合题意。
故选D。
4.(2024·六安模拟)如图所示是加热高锰酸钾制取氧气及其性质的验证相关的实验操作,需要纠正的是()A.检查装置气密性B.制取氧气C.排水法收集氧气D.硫在氧气中燃烧【答案】B【解析】A、检查该装置气密性时,先将导管放入水中,再用手紧握试管,若有气泡冒出,说明装置气密性良好,该选项操作正确;B、加热高锰酸钾时,为了防止固体粉末进入导管,堵塞导管,试管口应塞一团棉花,且试管口微微向下倾斜,该选项操作不正确;C、氧气不易溶于水,可用排水法收集,该选项操作正确;D、硫燃烧生成有毒的二氧化硫,集气瓶底应留少量的水,吸收有害气体二氧化硫,防止污染空气,该选项操作正确。
第8课《卖火柴的小女孩》(第一课时)(分层作业)-三年级语文上册 部编版
第8课卖火柴的小女孩第一课时分层作业
参考答案:
一、基础类
1.火柴饥饿地板破旧蜡烛几乎冷火焰
2.蜡(蜡烛)诉(诉说)怜(可怜)烛(烛光)
猎(猎人)拆(拆开)冷(寒冷)独(独自)3.
几.乎(jī)挣.钱(zhèng)喷.泉(pēn)
几.个(jǐ)挣.扎(zhēng)喷.香(pèn)
茶几.(jī)挣.脱(zhèng)喷.涌(pēn)
二、提升类
4.
奇异的小女孩雪白的烤鹅
冻僵的火柴闪烁的星星
穷苦的火光慈祥的台布
小小的小手喷香的奶奶
5.(1)丹麦安徒生
(2)五火炉烤鹅圣诞树奶奶跟奶奶飞走
6.(1)C A B
(2)香喷喷甜滋滋
(3)寒冷火炉火炉不见了
三、拓展类
7.《皇帝的新装》《草房子》《小红帽》《狼王梦》
沈石溪格林兄弟安徒生曹文轩
8.略。
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第1课时分层训练
[Period 1]
Ⅲ.2018·孝感完形填空
A traveller was in a large desert, planning to walk across it in one month. Twenty more days passed, the journey had been going on __1__. “Soon I'll be able to walk out of this desert,” he thought gladly.
But the desert was never friendly __2__ travellers. In a short time, there came a strong sandstorm. He hurriedly __3__ his head with the clothes, prostrate on the sand. After about ten minutes, the sandstorm __4__.He shook the clothes and stood up. At that moment, he found himself in a hopeless situation—the backpack with food and water was swept away by the __5__.
As we know, it seems __6__ to leave the desert without food and water. __7__,he had a pear left. He held it in his hands lightly,“Not too bad, at least I have a pear. I __8__ I can walk out of the desert.”
Days and nights went by quickly, but the desert still looked endless. Besides, hunger, thirst and fear of __9__ were always around him like ghosts. __10__,each time he was close to losing hope, he forced himself to stare at the pear that he had been __11__. “Not too bad, at least I have a pear.”
A small pear became the __12__ for his survival (生存). Three days later, __13__ he saw a village not far away, he laughed with excitement. He felt completely relaxed—the “pear” brought him back to __14__.
To keep hope is the best weapon(武器) for victory, so never tell you “__15__ left” because only if you try to search, you can always f ind a “pear” to pull you out of trouble.
()1.A.well B.badly C.terribly D.heavily
()2.A.at B.on C.to D.by
()3.A.played B.beat C.filled D.covered
()4.A.began B.stopped C.hid D.continued
()5.A.snow B.desert C.sandstorm D.smoke
()6.A.right B.impossible C.safe D.important
()7.A.Carefully B.Easily C.Sadly D.Luckily ()8.A.believe B.wonder C.remember D.advise
()9.A.death B.pain C.illness D.sand
()10.A.Also B.And C.Or D.However
()11.A.smelling B.eating C.keeping D.imagining
()12.A.hope B.rule C.question D.plan
()13.A.as long as B.even if C.so that D.as soon as
()14.A.danger B.sleep C.life D.mind
()15.A.anything B.nothing C.something D.everything
Ⅳ. 阅读理解
Summer vacation is coming. Most of the students want to have a good trip this summer. Here is some information about trips for you.
()1.You should call ________ if you want to take hot spring.
A.4325116 B.4258663
C.4325611 D.4325711
()2.If you want to go to the Pine Sea, you can't enter________.
A.at 10 a.m. B.at 6 p.m.
C.at 11 a.m. D.at 2 p.m.
()3.If a couple with a 5-year-old child go to the Big Valley, they need to pay________ for the trip.
A.¥160.00 B.¥280.00
C.¥320.00 D.¥440.00
()4.You can go to________ for hiking.
A.the Stone Sea B.the Pine Sea
C.the Big Valley D.the Grass Lake
教师详解详析
【课时分层训练】
Ⅲ.【主旨大意】本文是一篇记叙文。
文章讲述了一个人独自穿越沙漠,开始时比较顺利,然而途中遭遇沙尘暴,最终凭借着一个梨存活下来的故事。
1.A考查副词辨析。
根据下文“Soon I'll be able to walk out of this desert”可知旅程一直比较顺利。
故选A。
2.C考查介词辨析。
be friendly to 为固定搭配,意为“对……友好”。
故选C。
3.D
4.B考查动词辨析。
根据下文“He shook the clothes and stood up.”可知,沙尘暴停止了。
故选B 。
5.C
6.B考查形容词辨析。
句意:众所周知,没有水和食物,似乎是不可能离开沙漠的。
impossible意为“不可能”。
故选B。
7.D
8.A考查动词辨析。
根据上文“Not too bad, at least I have a pear.”可知,他在给自己鼓气加油,他相信自己能走出去。
believe 意为“相信”。
故选A。
9.A10.D11.C
12.A考查名词辨析。
上文中提到每当他快要失去希望的时候,他都要看一看这个梨。
所以这个梨是他生存的希望。
hope 意为“希望”。
故选A。
13.D
14.C考查名词辨析。
根据上文可知那个梨使他活下来了,短语bring sb to life 表示“使某人活下来”。
故选C。
15.B
Ⅳ.【主旨大意】本文是一篇应用文。
暑假即将到来,同学们都想出去旅游。
本文给出了四个旅游选择,并给出了一些具体信息。
1.C细节理解题。
根据Trip 3 The Big Valley中的“You can take hot spring and enjoy some folk music.”可知选C。
2.B细节理解题。
根据Trip 2 The Pine Sea中的旅游时间“Time: 9 a.m.—3 p.m.”可知选B。
3.C细节理解题。
根据Trip 3 The Big V alley中的旅游价格“Adult:¥160.00Child: ¥120.00Under 12 years old for free”可判断两个大人和一个5岁孩子的价格应为320元。
故选C。
4.A细节理解题。
根据Trip 1 The Stone Sea中的“Br ing your strong shoes for hiking in the beautiful Stone Sea.”可知选A。