homework_6
八年级英语强调句型综合练习题40题含答案解析
八年级英语强调句型综合练习题40题含答案解析1.It is in this classroom that we have our English class.A.It is in this classroom which we have our English class.B.It is this classroom that we have our English class in.C.It is in this classroom where we have our English class.答案解析：B。
强调句型的基本结构是It is/was+被强调部分+that/who+其他部分。
A 选项中which 不能用于强调句型；C 选项中where 不能用于强调句型，应该用that。
本题强调的是in this classroom，所以完整的句子应该是It is this classroom that we have our English class in。
2.It was Tom who broke the window.A.It was Tom which broke the window.B.It was Tom that breaks the window.C.It was Tom whom broke the window.答案解析：A 选项中which 不能用于强调句型中强调人；B 选项中时态错误，原句是过去时，这里应该用broke；C 选项中whom 虽然可以用于强调句型中强调人，但在本句中作主语，应该用who。
正确答案是It was Tom who broke the window。
3.It is on Sunday that we usually go for a picnic.A.It is on Sunday when we usually go for a picnic.B.It is Sunday that we usually go for a picnic on.C.It is on Sunday where we usually go for a picnic.答案解析：B。
2024年人教版六年级上册英语第四单元课后练习题(含答案和概念)
2024年人教版六年级上册英语第四单元课后练习题（含答案和概念）试题部分一、选择题：1. In Unit 4, which word means "happy" in English?A. SadB. HappyC. AngryD. Tired2. Which sentence is correct in English?A. I am go to school.B. I am going to school.C. I go to school.D. I going to school.3. What is the opposite of "hot"?A. ColdB. WarmC. CoolD. HotterA. happyB. sadC. angryD. tired5. Which word is a noun?A. RunB. JumpC. BookD. Eat6. What is the past tense of "go"?A. GoedB. GoneC. WentD. Going7. Choose the correct question word: "________ do you go to school?"A. WhyB. WhereC. WhenD. How8. Which sentence is in the present continuous tense?A. She eats an apple.B. She is eating an apple.C. She ate an apple.D. She will eat an apple.9. What is the plural form of "child"?A. ChildsB. ChildrenC. ChildD. Childes10. Which word is an adjective?A. RunB. JumpC. HappyD. Eat二、判断题：1. "I am happy" and "I am sad" have the same meaning. ( )2. "She is going to the library" means she will go to the library in the future. ( )3. "He is reading a book" is in the past tense. ( )4. "They are playing football" is a correct sentence. ( )5. "I am go to the park" is a correct sentence. ( )6. "She is happy because she got a good grade" is a positive sentence. ( )7. "He is not tired" means he is very energetic. ( )8. "The cat is sleeping on the sofa" is a present continuous tense sentence. ( )9. "Apples" is the plural form of "Apple". ( )10. "She is eating an apple" and "She eats an apple" have the same meaning. ( )三、填空题：1. The opposite of "big" is ________.2. "I ________ to the movies last night" is a past tense sentence.3. The plural form of "mouse" is ________.4. "She is ________ because her birthday is tomorrow" isa positive sentence.5. The question word "________" is used to ask about the time.6. "________ am" is the first person singular form of the verb "be" in the present tense.7. "He is ________ a book" is a present continuous tense sentence.8. "They ________ to the park every weekend" is a present simple tense sentence.9. "I like to ________ in the morning" is a sentence about a habit.10. "________ you like some tea?" is a polite way tooffer tea.11. "I ________ my homework already" means the homework is finished.12. "She ________ a new dress for the party" is a sentence about preparing for an event.13. "________ you speak English?" is a question asking about someone's language ability.14. "He ________ to the store and bought some milk" is a sentence about a sequence of actions.15. "________ is your favorite color?" is a question asking about personal preference.16. "We ________ to the zoo last year" is a sentence about a past event.17. "She ________ a sandwich for lunch" is a sentence about a routine.18. "________ are you going?" is a question asking about someone's destination.19. "They ________ their homework at the library" is a sentence about a location.四、简答题：1. What is the difference between "I am" and "I do"?2. Explain the use of the present continuous tense.3. How do you form the past tense of regular verbs?4. What is the difference between "I like" and "I would like"?5. Write a sentence using the present perfect tense.6. Explain how to make a question in English.7. What is the plural form of "tooth"?9. Write a sentence using the word "although".10. Explain the difference between "some" and "any".一、选择题答案：1. B2. B3. A4. B5. C6. C7. B8. B9. B10. C二、判断题答案：1. ×2. √3. ×4. √5. ×6. √7. ×8. √9. √10. ×三、填空题答案：1. small2. went3. mice4. excited5. When6. I7. reading8. go9. exercise10. Would11. have done12. made13. Can14. went15. What16. went17. has18. Where19. do20. Where四、简答题答案：1. "I am" is used to describe a state or condition, while "I do" is used to emphasize an action.2. The present continuous tense is used for actions happening now, actions that are temporary, and for expressing irritation about a repeated action.3. Regular verbs form the past tense adding ed to the base form of the verb.4. "I like" is used to express a general preference,while "I would like" is more polite and is often used when making a request.5. "I have finished my homework."6. To make a question in English, you can use question words (who, what, where, when, why, how), auxiliary verbs (do, does, did, can, could, will, would, is, are, was, were), or invert the subject and verb (especially with be verbs).7. teeth9. "Although it was raining, they decided to go for a walk."10. "Some" is used in positive sentences and questions when you expect a positive answer, while "any" is used in negative sentences and questions.Sentence Structure: Positive and negative sentences, questions, using "some" and "any", making requests.各题型知识点详解和示例：选择题： Test students' understanding of vocabulary, grammar rules, and sentence structure.Example: Knowing the difference between "happy" and "sad" (vocabulary) and identifying the correct verb tense (grammar).判断题： Assess students' ability to recognize correct and incorrect sentence formation and grammar usage.Example: Distinguishing between the correct past tense form "went" and the incorrect "goed".Example: Filling in the correct form of the verb "be" in the present tense: "I am".简答题： Measure students' ability to explain grammatical concepts and construct sentences.Example: Explaining the use of the present continuous tense and providing a sentence as an example.。
冀教版六年级英语上册期中综合测试卷含答案
冀教版六年级英语上册期中综合测试卷时间：40分钟满分：100分题号一二三四五六七八九十总分得分听力部分(30分)一、听句子，选出你所听到的一项。
(5 分)( )1. A. school bus B. bus driver C. bus stop ( )2. A. room B. house C. home( )3. A. driver B. lesson C. umbrella ( )4. A. thirty B. forty C. half( )5. A. day B. kitchen C. dishes二、听句子，选出与你所听内容相符的图片。
(5 分)( )1. A. B. C.( )2. A. B. C.( )3. A. B. C.( )4. A. B. C.( )5. A. B. C.三、听句子，选择正确的答语。
(10 分)( )1. A. In Beijing. B. At school. C. I’m from Shijiazhuang. ( )2. A. Yes, I am. B. No, I can’t. C. Yes, I do.( )3. A. English, math and science. B. Four classes. C. I like English.( )4. A. You are welcome. B. Yes, please. C. You are right.( )5. A. In the bedroom. B. In the kitchen. C. In the bathroom.四、听对话，完成表格。
(10 分)Do homework Read books Watch TV Tom 1.______________ 3.____________ ALucy 2.______________ A 4._____________Lily A A 5._____________ A=always O=often S=sometimes N=never笔试部分(70分)五、读一读，根据句意、首字母及图片提示写单词，补全句子。
OS-homework-6
实验六实验名称：管道通信实验报告：实验要求:1.阅读以下程序：#include <unistd.h>#include <stdio.h>#include <stdlib.h>main(){int filedes[2];char buffer[80];if(pipe(filedes)<0) //创建一个新管道err_quit(“pipe error”);if(fork()>0){char s[ ] = “hello!\n”;close(filedes[0]); //关闭读write(filedes[1],s,sizeof(s)); //从父进程写入管道close(filedes[1]); //在退出程序前关闭写}else{close(filedes[1]); //关闭写read(filedes[0],buffer,80); //从管道读并且保存在buffer中printf(“%s”,buffer);close(filedes[0]);}}编译并运行程序，分析程序执行过程和结果，注释程序主要语句。
2.阅读以下程序：#include<sys/types.h>#include<sys/stat.h>#include<fcntl.h>main(){char buffer[80];int fd;unlink(FIFO); //（如果有FIFO文件，先删掉）mkfifo(FIFO,0666); //创建一个FIFO文件if(fork()>0){char s[ ] = “hello!\n”;fd = open (“FIFO”,O_WRONL Y); //此处是文件名FIFO加上引号write(fd,s,sizeof(s));close(fd);}else{fd= open(FIFO,O_RDONL Y);read(fd,buffer,80);printf(“%s”,buffer);close(fd);}}编译并运行程序，分析程序执行过程和结果，注释程序主要语句。
译林版小学英语六年级下册第二单元自主学习任务单
小学英语六年级下册自主学习任务单Unit 2 Good habits第一课时一、学习目标1.文章能理解课文大意，会朗读、复述并尝试介绍自己的生活习惯。
2.词汇四会：habit, never, late, finish, tidy, fast三会：bad, sleepy, last night, slowly, badly,put...in order,last night3.日常交际用语He gets up/ goes to school early in the morning. /He never goes to bed late. /Did you go to bed late last night? /I’m not sleepy./You shouldn’t go to bed late.二、学习过程Step 1 Warm- up第一步：热身1.Greeting.师生问好。
2.Sing a song. This is the way 演唱歌曲《应该这样做》。
请同学们跟着歌曲的节拍和视频的动作，一起学唱这首歌。
Step 2 Lead- in 第二步：导入话题1. Free talk(1) T: This is the way we wash our face.Do you wash your face every day?Emm，you have a good habit.（学习habit）(2)T: I’m your new teacher today. Do you want to know me well?I’ll tell you my habits. Then, please say “A good habit or a bad habit?”.（PPT）I get up early in the morning.I never have breakfast.I never go to bed late.I put my things in order.---Learn: put … in order, clean and tidy在游戏的过程中学习“put … in order, clean and tidy”。
六年级中英互译
Homework4-6单元星期六有一个邮票展__________________________________________让我们一起去吧__________________________________________我有一个朋友，他能和我们一起去吗？__________________________________________我很高兴有一个笔友__________________________________________我的双胞胎姐妹喜欢画画__________________________________________我们看上去一样，但我们喜欢不一样的东西__________________________________________ 高速我一些关于你的事情__________________________________________澳大利亚肯定很有趣__________________________________________你的笔友住在上海吗？不，他住在北京__________________________________________他教你数学吗？是的？__________________________________________他坐公车上班__________________________________________他们看上去一样，但他们很不一样__________________________________________她妹妹电视上看卡通__________________________________________我每周和Alice写邮件__________________________________________Alice说她家庭马上来中国了__________________________________________我很兴奋__________________________________________你妈妈是做什么的？他是电视台记者__________________________________________他是谁？__________________________________________她真的很漂亮__________________________________________他为我阿姨写电视节目__________________________________________多令人兴奋啊__________________________________________有时他在北京工作，有时在香港工作__________________________________________她在哪里上班？她在汽车公司上班__________________________________________她怎么去上班的？__________________________________________她设计车__________________________________________如果你喜欢画画，你可以成为一个工程师__________________________________________ 她帮助银行更好的使用他们的钱__________________________________________她喜欢和数字打交道__________________________________________他公车上班，但他喜欢走路回家__________________________________________她经常帮助旅行者找到他们的路__________________________________________水是怎样变成水汽的？__________________________________________阳光照耀，水变成水蒸汽__________________________________________这是晴朗的一天__________________________________________他感觉到很热__________________________________________可能天空上面会凉快些__________________________________________小水珠越升越高__________________________________________她遇到很多另外的小水珠__________________________________________我正往下掉呢__________________________________________小水珠和她的一些朋友掉进湖里__________________________________________太阳出来了__________________________________________你能带我再升到天上吗？__________________________________________你怎样植树？__________________________________________给他们浇水，几天后，你可以看见嫩芽__________________________________________我把一些种子放入容器中__________________________________________我把它放在太阳下__________________________________________我每天浇水，确保它得到足够的太阳__________________________________________我的植物一个月了__________________________________________我等不及了__________________________________________1-3单元你怎么去上学的？__________________________________________我家很近，通常我走路去上学，有时候骑车__________________________________________ 今天下午让我们一起去公园吧__________________________________________你家在哪里？__________________________________________我家在邮局附近__________________________________________2点见__________________________________________我怎么去中山公园？__________________________________________我能步行去吗__________________________________________可以，如果你愿意__________________________________________交通灯在每个国家都是一样的__________________________________________有三种颜色，红黄绿__________________________________________在中国，司机在马路右边开车__________________________________________你必须知道交通规则__________________________________________附近有电影院吗？有的__________________________________________离这里远吗__________________________________________不，不远__________________________________________你放学后打算做什么？__________________________________________我想买两双鞋子__________________________________________电影院下去，直走三分钟__________________________________________在书店右转，它在电影院东边__________________________________________周六下午6：00来我12岁生日派对__________________________________________ 在学校前的公交车站开始__________________________________________坐17路车__________________________________________找到左边的白色建筑__________________________________________门的附近找我__________________________________________你周末打算做什么__________________________________________我将会有一个忙碌的周末__________________________________________我将要回家读新书__________________________________________周日我要和妈妈去超市__________________________________________我们午饭后过去__________________________________________你下午去哪里？__________________________________________你要去买什么？__________________________________________你什么时候去？__________________________________________你打算怎么去？__________________________________________我打算去植树__________________________________________另外的，让我想想__________________________________________你要用书吗__________________________________________是的，我打算买一本关于植物的书__________________________________________ 有一天我想做科学老师__________________________________________等一会__________________________________________我向去南门的宠物店__________________________________________有一个大的滑冰场__________________________________________。
Unit 12 第6课时 Section B (教学课件)-九年级英语全一册(人教新目标)
While-writing
My lucky/ unlucky day
妙构思
开篇点题
I will always remember the date... This was the luckiest/ unluckiest day of my life...
阐述经历
When I woke up that morning... Later that day... I couldn’t believe... Then/After that,... Finally,...
3a
Can you remember a lucky or an unlucky day? What happened? Make some notes about what you remember.
Examples
catch the bus
rush out of the door run quickly / fast to catch the bus be out of breath after my run
• Finally, …
• I think … • What a lucky/an unlucky day!
总结感慨
While-writing
单元话题导语
本单元以“unexpected events”为话题展开学习， 重点学习了语法——过去完成时态。该话题涉及内容 较多，可以讲述自己的亲身经历，也可以讲述自己 的亲眼所见或亲耳所闻。话题命题形式常采用语言 描述形式，涉及日记、记叙文等文体。具体到本单 元书面表达中，要求同学们能运用一般过去时和过 去完成时描述自己或他人的经历。
While-writing
Sample Writing 1
Homework6参考答案
Z Visa is the fundamental needed visa issued to foreigners who are to take up posts or employment in China and to their accompanying family members by the Chinese visa authorities for entry or exit from the Chinese territory. Foreigners who are to take up posts or work in Guangzhou shall have handled Z Visa before entry into China.Applicant's Documents(consult visa authorities for details)1.Original 'Foreign Experts Working Permit'2.Notification Letter for Z visa application issued by authorized official department3.Valid passport4.A completed visa application form.5.One recent passport sized photograph (one inch half-length, bareheaded and full-faced)Notice: To apply for Notification Letter for Z visa application, please contact Passport & Visa Division of Foreign Affairs Office, the People's Government of Guangzhou Municipality. Tel: 83172462, Address: Room502, 5th Floor, Guangzhou Foreign Business Street, Guangren Road.（译文）为了使我能再回中国，停留一年，上个星期一（7月19日），我从南京出发前往北京，延长我的工作签证。
人教版八年级英语上册二次备课教学设计(含答案)：Unit2 How often do you exercise(6课时)
Unit 2How often do you exercise?第一课时 Section A (1a ～1c)§自主学习案写出下列单词。
总是 always 有时候 sometimes通常 usually 从不 never经常 often§课堂导学案Step 1 准备与热身(Preparation )Good morning! Today we shall take up the second unit in this new term: Unit 2 How often do you exercise? Please open your books at page 9.T: Look at picture a ．What is she doing?S 1: She is going shopping.T: Do you usually go shopping?S 2: No, I don't.T: What do you do on weekends?S 3：I often play football.T ：What do you do on weekends?S 4：I sometimes go shopping.Step 2 呈现与输入 (Presentation )Open your book at page 9. Let's look at 1a.Each thought bubble shows something a person does on weekends. Now please look at the picture carefully and describeit.Name each activity：T：Good. Please look at the picture again and list all the activities.If you finish it first, write the answer on the blackboard.Now let's check the answers on the blackboard together.Keys：1.help with homework 2.watch TV 3.read 4.exercise 5.shopStep 3练习与体验(Practice)Look at the pictures again and tell what the person does on weekends.Good. Next, please listen to the conversation.The people are talking about what they do on weekends. First listen to the tape carefully and find how often they do on weekends.Next listen again and write the letter of one activity after the word in the list. For example, on the recording someone says，“I always go shopping.”Shopping is letter a in the picture in activity 1a.So you put an “a” after the word “always”in this list.Then listen to the tape the third time and check the answers.Step 4运用与生成(Production)After talking about the picture，we get to understand the activities.Now in pairs ask your partner about the people in the picture.A：What does he do on weekends?B：He usually watches TV.A：Does he go shopping?B：No, he never goes shopping.Step 5巩固与提高(Progress)【探究点】What do you usually do on weekends？周末你通常做什么？①该句是由what引导的特殊疑问句。
《My day》四年级英语(下)课件稿
(C ) 4. What do you have?
basketballs.
(D ) 5. How many footballs do you D. Twelve.
have?
E. It’s Tuesday.
My day
基础知识
重点单词
ually 通常，常常 2.lunch
午饭
3.home 家
I get up at seven. 我7点起床。 I usually go to school at seven forty. 我通常在7点40分去学校。 I have four lessons in the morning. 我上午有四节课。 I have lunch at twelve. 我在12点吃午餐。
_你__想__要___现__在__吃___早__餐_ 吗？
Words
dinner [ˈdinə]
作名词，意为“晚餐，晚宴；宴会；正餐”。 常用短语：after dinner 餐后
family dinner 家宴 eg： We usually have dinner at 6 o’clock pm.
14.at seven
在七点
15.my day
我的一天
16.over there
在那边
17.have four lessons 有四节课
重点句型
1.I usually go to school at seven forty. 我通常七点四十去上学。
2.I have lunch at twelve. 我十二点吃午饭。
5.我通常在七点钟看电视。 I _u_s_u_a_ll_ywa_t_c_h__T_V____se_v_eant ______.
PEP小学六年级英语真题(答案及解析)
PEP小学六年级英语真题(答案及解析)(共50道题)下面有答案和解题分析一、综合题1.They _______ (be) my friends.st night, I ______ (watch) a movie with my family. We ______ (enjoy) the movie very much. After the movie, we ______ (talk) about the story. It ______ (be) very exciting, and we all ______ (laugh).3.Tom and his sister are cleaning their room. They are putting their __________ into the __________. Tom is also sweeping the floor with a __________. After cleaning, their room looks very __________. They feel __________ because they love having a clean room.4.We _______ (study) English right now.5.Every morning, I __________ (wake) up at 7:00 and __________ (get) ready for school. I __________ (have) breakfast with my family, and then I __________ (leave) for school at 7:30. After school, I __________ (go) home and __________ (do) my homework.6.We _______ (study) English together.7.We _______ (read) books in the evening.8.He _______ (like) to read books in his free time.9.My parents _______ (take) us to the museum last weekend. We learned about ancient history and saw many interesting artifacts.10.Which of these is used to carry things?A. ChairB. BagC. PlateD. Knife11.How do you say "你好" in English?A. GoodbyeB. HelloC. SorryD. Thank you12.What do we call a shape that has three sides and three angles?A. CircleB. SquareC. TriangleD. Rectangle13.Which one is used for writing?A. PenB. CupC. SpoonD. Plate14.What is 3 + 5?A. 7B. 8C. 9D. 1015.He _______ (not/like) to swim.16.I _______ (buy) fruits at the market.17.I __________ like chocolate.A. doesntB. dontC. notD. am not18.What do we use to write on a board?A. PenB. MarkerC. EraserD. Pencil19.This morning, I __________ (wake) up at 7:00 a.m. but I __________ (feel) very tired. I __________ (get) out of bed quickly and __________ (brush) my teeth. Then I__________ (have) breakfast with my sister. She __________ (eat) some toast, but I__________ (eat) a sandwich. After breakfast, we __________ (leave) for school at 8:00.20.They _______ (have) dinner at 7 o’clock.21.We _______ (not/go) to the beach in winter.22.Which of these is a month of the year?A. SundayB. SummerC. JanuaryD. Friday23.What is the opposite of "old"?A. YoungB. TallC. HeavyD. Light24.My aunt __________ (live) in a big city, but she __________ (want) to move to the countryside. She __________ (like) the quiet atmosphere, and she __________ (prefer) fresh air and open space.25.Which of these is a musical instrument?A. GuitarB. PlateC. ChairD. Spoon26.I _______ (not) understand this lesson.27.I __________ (1) to school every morning. My school __________ (2) near my house, so it only __________ (3) about 10 minutes to walk there. My best friend Lily__________ (4) live near me, and we __________ (5) walk together. We __________ (6) talk about what we did the day before. Sometimes, we __________ (7) see other classmates on the way, and we __________ (8) wave to them. When we __________ (9) arrive at school, we __________ (10) go straight to our classroom.28.They _______ (study) English at the moment.29.We __________ (1) a school trip to the museum next Friday. We __________ (2) visit the art gallery and __________ (3) learn about famous painters. Our teacher__________ (4) give us a tour of the museum. I __________ (5) think it __________ (6) interesting. After the visit, we __________ (7) have lunch in the museum’s café. It__________ (8) a great day because we __________ (9) explore new things.30.Which of these is the opposite of "full"?A. EmptyB. BigC. TallD. Small31.She _______ (have) a brother.32.Which of these is a shape?A. CircleB. DogC. CupD. Table33.She _______ (not/like) playing tennis.34.Sarah is packing for her trip to the beach. She puts her __________ and__________ in her bag. She also packs some __________, sunscreen, and a __________. After packing everything, she is ready to go and excited to see the ocean.35.We _______ (like / likes / liked) to play video games.36.They _______ (is / are / am) working on a project.37.They _______ (be) in the classroom.38.The dog ______ under the table.A. isB. areC. amD. be39.Which one is a wild animal?A. DogB. CowC. LionD. Rabbit40.I ______ (play) soccer with my friends every Saturday. Last weekend, we ______ (have) a match. My team ______ (win) the game, and I ______ (score) a goal. We______ (celebrate) our victory with ice cream.41.My sister _______ (not / like) swimming.42.We _______ (go) to the beach next Saturday.43.In the winter, I usually ______ (wear) a warm jacket, gloves, and a scarf. The weather ______ (be) cold, so I ______ (need) to stay warm. I sometimes ______ (play) in the snow with my friends. Last year, we ______ (build) a big snowman and ______ (have)a snowball fight. It ______ (be) a lot of fun.44.Which of the following is a shape?A. CircleB. PlateC. CarD. Dog45.He _______ (read) a newspaper every morning.46.She _______ (is / are / am) my cousin.47.We _______ (not) go to the park when it rains.48.What do we use to write on paper?A. KnifeB. SpoonC. PenD. Plate49.He _______ (drink) tea every morning.50.I ______ (love) to read books. My favorite book ______ (be) about a young girl who ______ (go) on an adventure. Every night, I ______ (read) one chapter before bed. I ______ (imagine) myself as the main character and ______ (think) about the story all day. (答案及解释)。
homework_6_参考答案
Exercise 3Question 2. Virtual MemoryIn this section, you will use a program demonstrating how virtual memory is used.a. How does virtual memory work using a page table?First, the operation system uses many data structures to help itself finishing the task to manage the system of computer. The page table is one of them.When the system needs virtual memory, the page table must be initialized. Then, whenever we need access data, we should check the page table, to find whether the page which data include d in it in the RAMor whether have free blocks in RAM. If there is free block or the data has already in RAM, no page faultwill occupy. If not, there must a swap in and out; the page table must be refreshed.On the other hand, the system accomplishes transferring between real memory space and user space (logical memory space) by using page table.b. What is the primary purpose of virtual memory?The primary purpose of virtual memory is enlarging the memory logically. Through virtual memory, the program which need larger memory space than real memory space can be ran, and less address location needed. At the same time, every program runs in its own private address space. The programmer not pay close attention to the physical address of memory yet, all of the address transferred between logical and physical are completed by the mechanism of virtual memory.c. List three advantages of using virtual memory when executing a program.The program does not need to be loaded contiguously into RAM.The program does not need to be loaded completely into RAM.The program does not need to start at a specific physical address.Execute the Page Replacement Simulation program.Click on Paging.exe to run the application. Refer to Appendix A. Running a Visual Basic File if Paging.exe does not run.Notice the top of the program window indicates the number of request and total page faults. The table on the left represents RAM and the one on the right represents the hard disk. The order of requests is set at default. You can also enter your own order of requests. To change the speed of the simulation, you can use the speed adjuster at the bottom-left of the program window. Each time you click on Stop or Pause, the simulation ends after one complete memory access.Start the program using the default queue of requests.d. Describe what is happening for the first seven requests step-by-step for the default order of requests.e. When does a page fault occur, and how does the kernel handle a page fault? Without enough real memory, a page fault must be occurred when a program requests data.The interrupt triggers the operating system to fetch the data from a virtual memory and load it into RAM.The page fault handler then determines what must be done to resolve this page fault. It can:(1)Find where the desired page resides on disk and read it in (this is normally the case if there is free block in the RAM). The example is request 1.(2)Determine that the desired page is already in RAM (but not allocated to the current process) and reconfigure the MMU to point to it. The example is request 7.(3)If the RAM is full and the page fault handler finds the desired page resides on harddisk, a swap willbe occurred. The example is request 5.In case of (1) and (3), the page table must be refreshed.f. Enter a sequence of eight requests in place of the default order of requests in the program that would cause four page faults.g. In what case is it undesirable(不可取) to use virtual memory? If having only one hard disk device and the capacity is poor, or the program containing long task dependingon frequently I/O operation, using virtual memory will let the system very slowly. In the other case, the program need access the hard disk frequently, in the other word, the task let the disk very busy, and thiscase is also undesirable.h. Given a total paging file size of 267MB, and a RAM of size 256MB. Your applications are currently taking up 500MB of memory. How would you run an application that consumes 100 MB of memory? W e can run the application directly,because there is enough real memory. Even if we need virtual memory, this function has been encapsulated by the OS. That is to say, it’s none of our business, whether do need virtual memory or not.Question 3. TroubleshootingBelow are various problem scenarios. Select the most likely cause(s) for the problem from the Causes list.CausesA. Component not plugged inB. Application software errorC. Operating system errorD. Low RAME. Slow processorF. CMOS battery failureG. Motherboard failureH. Hard disk failureI. BIOS ROM failureJ. Appropriate component driver not installed properlyProblemsa. Program not respondingCauses: B. Application software error，D. Low RAMb. Screen froze after successfully bootingCauses: C. Operating system errorc. Programs running slowlyCauses: E. Slow processor ，D. Low RAMd. Peripheral device not working (mouse, keyboard, printer)Causes: A. Component not plugged in，J. Appropriate component driver not installed properlye. All necessary computer system components are plugged in, but the system does not bootCauses: G. Motherboard failure，I. BIOS ROM failuref. The computer is being booted, and an error message indicates that the hard drive cannot be found.Causes: H. Hard disk failureg. If low memory is a cause of the system running slowly, what can you do as a user to speed up the system? We can use the hard drive for virtual memory，or to expand our real RAM bye adding SDRAM storage .Question 4. File DirectoriesIn this question, you are given a zip file, which contains some folders and files. You will unzip the given file, manipulate the files and folders, zip the resulting file structure and submit it, along with answers to the questions in this exercise.First, download and save SSD2 File System.zip onto your Desktop. Then unzip the file.a. What is the absolute path of the file named test.txt in SSD2 File System folder? C:\Documents and Settings\Administrator\桌面\SSD2 File System\Temp3\test.txtb. How many parent directories does test.txt have? It has 6 parent directories.c. Create a shortcut of test.txt and place it in the same directory. Rename the shortcut “MyTest”. Copy and paste a screenshot showing the fileproperty of MyTest.d. Examine the file property of test.txt. Explain why the values for Size and Size on disk are different. What is the term for the difference between the two sizes? From the file property of test.txt we can get the values for size is 4 bytes but this file occupies 8KB. Because in modern computer systems, cluster is the smallest amount of space any file can occupy on a disk. In this computer, a cluster is 8kB, that is to say, the file occupies the space at least8KB, even its size is less than 8 KB in fact.e. Opening MyTest or test.txt both result in the display of the file. Explain the difference between MyTest and test.txt. MyTest is a shortcut, while test.txt is the target file.A shortcut only refers to its target, but not a copy of the target. It is just a pointer to the target. When we move the target file to other place, the shortcut will not work correctly.f. What are the different file extensions in folder Temp1? They are four types of file, and their extensions are: .gif , .html, .htm and .xml.g. List the most recently modified item in SSD2 File System folder.The most recently modified item is the shortcut named MyTest which was built just now.Unit 3 and Unit 4 Review Materials14. Virtual Memorya.What three advantages does the course mention, regarding virtualmemory?The program does not need to be loaded contiguously into RAM.The program does not need to be loaded completely into RAM.The program does not need to start at a specific physical address.b.What is one disadvantage of virtual memory?Virtual memory can slow access to data because it is stored on the hard drive which issignificantly slower than physical RAM.c.What data is contained in a swap file and where does the swap filereside?A swap file contains data about all virtual memory pages that is stored in "RAM". Itis a system file stored on the hard drive.d.How does virtual memory work using a page table?The page table maintains the list of mappings for virtual addresses to real addresses,and real addresses to virtual ones.e.Given pages 2, 3, and 5 are already in main memory (the memory isnot yet full). What happens when a request for page 6 is made? What role does the kernel play in processing this request?A page fault occurs which leads the processor to stop execution and give control tothe kernel. The kernel loads in the page being used into RAM and updates the pagetable. Then the process resumes executing the instructions.。
新概念英语青少年版B-全套课后作业
Unit 1 Tha t’s my father!一、补全单词，并配对Gr _ ndf _ ther 奶奶、外婆Gr _ ndm _ ther 爸爸F _ _ her 爷爷、外公M _ _ her 叔叔_ _ cle 堂兄弟、表姐妹_ _ nt 妈妈C _ _ sin 婶婶、阿姨m _ n 女人w _ m _ n 男人二、用“and”将句子合并。
1、He’s thin. He’s tall. ________________________________________2、My cat is big. My cat is black. ________________________________________3、Tom is fat. Tom is short. ________________________________________4、His umbrella is red. His umbrella is green. ________________________________三、将单词重新组合成完整的句子。
1、that / who / is / boy? ________________________________________2、is / my / this / brother. ________________________________________3、short / fat. / and / Tom / is ________________________________________4、boy / is / tall. / The ________________________________________Unit 2 This is our house.一、抄写单词bedroomhousekitchensittingroombathroombetweendiningnext to二、根据译文，补全对话1、这是你的房子吗？_________ ________ your house?2、那里是我们的房子。
小学五年级下册第4次英语第1单元期测验题(答案和解释)
小学五年级下册英语第1单元期测验题(答案和解释)英语试题一、综合题(本题有50小题，每小题2分，共100分.每小题不选、错误，均不给分)1.Which of these is a shape?A. SquareB. ForkC. TableD. Cup2.I love to __________. My favorite sport is __________. I play it with my__________ in the __________ after school. It is very __________, and we always have __________. Sometimes, we play in a team, and other times we play __________. After the game, we like to __________ and eat __________.3.This is my favorite fruit. It is a ______, and it is very sweet. I eat it every ______ after lunch. Sometimes, I also like to have ______ with my fruit. My mother says that it is good for my ______ because it has a lot of ______. My brother prefers ______ to fruit, but I think ______ is better.4.Which animal is known for its stripes?A. LionB. ElephantC. TigerD. Cat5.This morning, I __________ (1) up early because I __________ (2) to finish my homework before going to school. I __________ (3) a quick breakfast and __________ (4) my backpack. Then, I __________ (5) to school by bus. The bus __________ (6) very crowded, but I __________ (7) to my classroom on time. I __________ (8) very happy because I __________ (9) all my homework.6.This is my best friend, Tom. He ______ (be) very tall and strong. He ______ (like) to play soccer. Every afternoon, he ______ (go) to the park to play soccer with his friends. Sometimes, they ______ (play) against other teams. Tom ______ (be) very good at soccer, and his team often ______ (win) the game.7.Which one is a fruit?A. BananaB. CarrotC. PotatoD. Lettuce8.Which one is a time of day?A. NoonB. SpoonC. DogD. Table9.Today in class, we learned about different types of animals. My teacher showed us pictures of a __, a __, and a __. The tiger is very strong, the monkey is very smart, and the giraffe is very tall. After the lesson, we played a quiz game to see who remembered the most facts about the animals.10.What is the color of an apple?A. GreenB. RedC. OrangeD. Blue11.What is the opposite of "happy"?A. AngryB. SadC. TiredD. Busy12.Which of these is a shape?A. CircleB. DogC. BookD. Chair13.What do we use to clean the floor?A. SpoonB. BrushC. KnifeD. Plate14.Which one is a vegetable?A. CucumberB. BananaC. AppleD. Grape15.What color is an apple when it is ripe?A. GreenB. BlueC. RedD. Black16.Which of the following is a country?A. DogB. CanadaC. ChairD. Table17.My best friend, Lily, ______ (live) in a small town. She ______ (be) very friendly and ______ (always) help me with my homework. This week, she ______ (invite) me to her birthday party. I ______ (buy) her a gift, and I ______ (feel) excited about the party. I ______ (know) it ______ (be) a special day for her.18.Which one is a body part?A. ArmB. TableC. ChairD. Pencil19.______ you like ice cream?A. DoesB. DoC. IsD. Are20.Which animal is the king of the jungle?A. ElephantB. LionC. TigerD. Bearst weekend, I __________ (meet) my cousins at a family gathering. We__________ (have) a barbecue, and everyone __________ (bring) something to share. After eating, we __________ (play) games, and the kids __________ (run) around in the yard.22._______ you like pizza?A. DoB. DoesC. AreD. Can23.What do we wear on our feet?A. GlovesB. ShoesC. HatD. Socks24.What is the plural of "dog"?A. dogsB. dogesC. dogsD. dog25.Which of these is used to write?A. SpoonB. KnifeC. PenD. Plate26.Which of these is used for eating?A. PlateB. ForkC. KnifeD. All of the above27.I usually ______ (get) up at 7:00 AM. After I ______ (wash) my face and ______ (brush) my teeth, I ______ (have) breakfast. My mom ______ (cook) pancakes for me. After breakfast, I ______ (go) to school by bike. My school ______ (start) at 8:00 AM, and I ______ (have) four classes before lunch. In the afternoon, we ______ (play) games in the playground. After school, I ______ (return) home and ______ (do) my homework.28.Which of these is a day of the week?A. JanuaryB. MondayC. WinterD. Blue29.What time is it? Its ______.A. twenty fiveB. twenty five oclockC. twentyfiveD. five twenty30.What time of the day do we usually have breakfast?A. MorningB. AfternoonC. EveningD. Night31.What do we use to tell the time?A. ClockB. BookC. CarD. Table32.I have _______ apples in my bag.A. someB. anyC. anD. a33.Jack and his family are visiting a new museum in the city. Jack is excited to see the __________ exhibits. They first visit the section about ancient __________, where Jack learns about the pyramids in __________. After that, they go to the section about__________, where they see models of different animals. Jack takes a __________ to remember the visit.34.Which fruit is yellow?A. AppleB. BananaC. CherryD. Grape35.This afternoon, I __________ (1) to the park with my friends. We __________ (2) on the swings and __________ (3) a picnic. After that, we __________ (4) a fun game of tag. I __________ (5) to go again next weekend.36.I __________ (1) my homework before playing video games. It __________ (2) a long time, but I __________ (3) it quickly today. After finishing, I __________ (4) a game with my friends.37.Which of these is used to clean the floor?A. KnifeB. BroomC. ForkD. Spoon38.How do you say "再见" in English?A. GoodbyeB. Thank youC. PleaseD. Sorry39.We __________ (have) a picnic in the park last Sunday. The sun __________ (shine) brightly, and the weather __________ (be) very warm. We __________ (spread) a blanket on the grass and __________ (enjoy) sandwiches and juice. My little brother __________ (play) with a ball while I __________ (read) a book. After lunch, we__________ (take) a walk around the park and __________ (see) some beautiful flowers. It __________ (be) a great day.40.Which one is a body part?A. LegB. SpoonC. PlateD. Chair41.What do you use to write on paper?A. SpoonB. ForkC. KnifeD. Pen42.Which one is a pet animal?A. TigerB. LionC. CatD. Elephant43.Yesterday, my parents _______ (take) me to the zoo. We _______ (see) many animals like lions, tigers, and monkeys. I _______ (take) a lot of pictures of the animals. After the zoo, we _______ (go) to a restaurant and _______ (have) lunch. It _______ (be)a wonderful day.44.I have a pet ______ named Max. He is very ______ and loves to play with a______. Every day, we go to the ______ to play fetch. Max runs very ______ and brings the ball back to me. After playing, we go home, and I give him some ______ to eat. Max is always happy after our playtime!45.Ethan loves playing basketball. He practices shooting the __________ into the hoop every day after school. His coach teaches him how to __________ the ball to his teammates. Ethan is getting better at passing the ball and making shots. He hopes to play in a big __________ one day. After practice, he drinks some __________ and feels proud of his progress.46.Which of these animals is known for its shell?A. FishB. BirdC. TurtleD. Elephant47.Which one is a fruit?A. MangoB. PotatoC. CucumberD. Onion48.Which of these animals can fly?A. ElephantB. TigerC. BirdD. Fish49.We __________ (1) a picnic last Sunday. It __________ (2) a sunny day, so we__________ (3) our sandwiches, fruits, and drinks to the park. We __________ (4) a blanket on the grass and __________ (5) to eat. After lunch, we __________ (6) a walk along the river and __________ (7) some birds. It __________ (8) a perfect day for a picnic.50.My little brother __________ (play) with his toys when I __________ (come) home yesterday. He __________ (tell) me that he __________ (build) a big house with his blocks.(答案及解释)。
PEP小学五年级下册英语试题(答案及解释)
PEP小学五年级下册英语试题(答案及解释)(共50道题)下面有答案和解题分析一、综合题1.She _______ (not/play) soccer on Sundays.2.What do we use to clean our hands?A. SoapB. TowelC. SpoonD. Plate3.When I ______ (be) a child, I ______ (love) to visit my grandparents. They ______ (live) in a big house with a garden. Every time I ______ (go) there, we ______ (play) games and ______ (eat) delicious food.4.Which one is a body part?A. LegB. PlateC. ForkD. Spoon5.She _______ (help) me with my homework.6.What do you use to brush your teeth?A. ToothbrushB. SpoonC. KnifeD. Plate7.Which of these is used to eat noodles?A. ForkB. SpoonC. KnifeD. Chopsticks8.What is the opposite of "tall"?A. SmallB. BigC. ShortD. Long9.Which one is a type of transport?A. DogB. CarC. AppleD. Cup10.She _______ (speak/speaks) three languages.11.Lucy is having a birthday party. She invites all of her __________ (1) to her house. They play __________ (2) games and eat __________ (3) that Lucy’s mom made. Lucy also gets a __________ (4) from her friend, Sarah. At the end of the party, everyone sings the __________ (5) song. Lucy feels very __________ (6).12.He _______ (help) his mom in the kitchen every Saturday.13.My family __________ (go) on vacation every year. This year, we __________ (plan) to visit the beach. We __________ (stay) there for five days. I __________ (hope) the weather __________ (be) sunny.14.Which of these is a month of the year?A. JanuaryB. SundayC. SummerD. Weekend15.I _______ (not/like) to eat spinach.16.My mother __________ (cook) dinner every evening. She __________ (usually)__________ (make) pasta or soup. After dinner, we __________ (clean) the kitchen together. Then, I __________ (help) her with the dishes, and we __________ (relax) on the sofa.17.I _______ (not want) to go to the park.18.She _______ (be) my friend.19.We _______ (be) good students.20.Lucy and her family are going to visit the zoo next weekend. Lucy’s little brother, Peter, is very excited because he loves __________. He can’t wait to see the __________, which is his favorite animal. Lucy is also looking forward to seeing the __________ and __________. They will also visit the __________ to learn about the different kinds of animals. After their tour, they plan to stop at the zoo café to have some __________ and __________. Lucy hopes that they will have a wonderful day and take lots of__________ to remember the trip.21.They _______ (not/go) to school on Saturdays.22.We _______ (have) lunch at 1:00 tomorrow.23.Which of these is a color?A. AppleB. GreenC. DogD. Spoon24.What do you use to brush your hair?A. CombB. SpoonC. KnifeD. Ruler25.My father is very good at cooking. He often makes ______ for dinner. It is my favorite food! He also makes a delicious ______ with lots of vegetables and meat. Sometimes, we have some ______ or ice cream for dessert. I love family meals!26.What do you use to drink?A. SpoonB. CupC. PlateD. Fork27.Which is the correct sentence?A. She can sings.B. She can sing.C. She can singing.D. She can singed.28.Which of these is a wild animal?A. CatB. CowC. LionD. Dog29.He _______ (not/study) for the test.30.Which one is a pet?A. DogB. LionC. ElephantD. Tiger31.They _______ (is/are) playing football.32.We ______ (have) a great time at the amusement park last weekend. First, we______ (ride) the roller coaster, and then we ______ (play) games. My brother ______ (win) a big teddy bear. After that, we ______ (eat) ice cream. It ______ (be) a perfect day.33.What do we use to cut paper?A. ScissorsB. ForkC. KnifeD. Spoon34.There __________ (1) a big tree in front of my house. The tree __________ (2) tall and green. Birds __________ (3) in the tree, and squirrels __________ (4) on its branches. Every spring, flowers __________ (5) on the tree. It __________ (6) a beautiful tree.35.My brother _______ (be) very tall.36.He _______ (do) his homework now.37.I have a dog named Max. Max __________ (1) a brown fur and __________ (2) very friendly. Every morning, he __________ (3) excited to go for a walk in the park. After we __________ (4) at the park, he __________ (5) around and plays with other dogs. I __________ (6) enjoy walking with Max because it __________ (7) fun. We__________ (8) walk for about 30 minutes, and then we __________ (9) home for breakfast. Max __________ (10) eat breakfast with me, but he __________ (11) wait for his food until later.38.We _______ (be) friends.39.James is getting ready to go to school. He wakes up early in the __________ and gets dressed in his __________. His mom prepares a healthy __________ for breakfast, and James eats it quickly. He puts his __________ into his bag and heads to the bus stop.On his way to school, he meets his friend, __________, and they walk together to the school gate.40.I usually wake up at 6:30 in the morning. After I wake up, I brush my teeth and wash my face. Then, I get dressed and have breakfast. My favorite breakfast is toast with butter and a glass of orange juice. After breakfast, I go to school.41.I _______ (not) understand this math problem.42.Which of these is a kind of fruit?A. BananaB. PotatoC. OnionD. Carrot43.They _______ (not) play outside.44.I _______ (not/eat) chocolate.45.Which one is a shape?A. CircleB. TableC. DogD. Chair46.We _______ (have) a good time yesterday.47.Which of these animals has wings?A. FishB. BirdC. DogD. Cow48.What is the opposite of "hot"?A. ColdB. BigC. TallD. Slow49.Which of these is the opposite of "fast"?A. SlowB. TallC. SmallD. Hot50.I _______ (take/takes) the bus to school every day.(答案及解释)。
人教版(新起点)小学六年级上册英语教案(全册)
人教版新起点英语六年级上册第一课时教学设计
人教版新起点英语六年级上册第二课时教学设计
人教版新起点英语六年级上册第三课时教学设计
人教版新起点英语六年级上册第四课时教学设计
人教版新起点英语六年级上册第五课时教学设计
人教版新起点英语六年级上册第六课时教学设计
人教版新起点英语六年级上册第一课时教学设计
人教版新起点英语六年级上册第二课时教学设计
人教版新起点英语六年级上册第三课时教学设计
人教版新起点英语六年级上册第四课时教学设计
人教版新起点英语六年级上册第六课时教学设计
人教版新起点英语六年级上册第一课时教学设计
人教版新起点英语六年级上册第二课时教学设计
人教版新起点英语六年级上册第三课时教学设计
人教版新起点英语六年级上册第四课时教学设计
\人教版新起点英语六年级上册第五课时教学设计
人教版新起点英语六年级上册第六课时教学设计
人教版新起点英语六年级上册第一课时教学设计
人教版新起点英语六年级上册第二课时教学设计
人教版新起点英语六年级上册第三课时教学设计
人教版新起点英语六年级上册第四课时教学设计。
七年级上册英语单元练习题 Unit 11 What time do you go to school
Unit 11 What time do you go to school?第Ⅰ部分听力部分（满分20分）Ⅰ. 听句子，选择正确的图画。
每个句子读一遍。
(5分）1.A B C 2.A B C 3.A B C 4.A B C5.A B CⅡ. 听句子,选出最佳答语。
每个句子读一遍。
（5分）6. A. Yes, let’s go now.B. Sorry, I can’t. I have to do my homework.C. I don’t want to go to a movie.7. A. Because I can’t hear.B. It’s Saturday or Sunday.C. Because my watch doesn’t work and I don’t know the time.8. A. Thank you.B. Yes, I’m very glad to hear that.C. Yes, I think so.9. A. Yes, I like art best.B. Science is.C. I like English and P.E.10. A. Yes, she is young.B. She is young.C. No, she isn’t old.Ⅲ. 对话理解：根据你所听到的对话以及针对该对话所提出的问题，选出能回答该问题的最佳答案。
每段对话及问题读两遍。
（5分）11. A. In the morning. B. In the afternoon. C. In the evening.12. A. She works in a hospital. B. He is an English teacher.C. She is a teacher.13. A. They are in a shop. B. They are in the classroom.C. They are in Beth’s home.14. A. They are going to swim.B. They are going to fish.C. They are going to a shop.15. A. He wants a bottle of Coke.B. He would like a bottle of orange juice.C. He would like to buy some fruit.Ⅳ. 听短文，根据短文内容选择最佳答案。
小学三年级下册英语刷题卷(答案和解释)212
小学三年级下册英语刷题卷(答案和解释)(共50道题)下面有答案和解题分析一、综合题1.We _______ (not) understand the lesson.2.Which one is a season?A. WinterB. PlateC. SpoonD. Knife3.How many fingers do you have on one hand?A. 6B. 5C. 4D. 34.Where do you put your shoes?A. On your headB. On your feetC. On your handsD. On your back5.She _______ (help/helps) her classmates with their homework.6.Which of these animals has four legs?A. BirdB. FishC. DogD. Butterfly7.Which word is used to describe a person who can speak two languages?A. BilingualB. MonolingualC. MultilingualD. Trilingual8.What time _______ you get up?A. doB. doesC. isD. are9.Lily is learning to __________ (1) the guitar. She started taking lessons last month, and now she can play some simple __________ (2). Today, Lily is practicing a song she learned in class. She is very proud because she can play the __________ (3) without making any mistakes. After practicing, Lily takes a break and enjoys a __________ (4) with her family.10.Which of these is a famous fruit?A. AppleB. CarC. BedD. Pillow11.I _______ (do/does) my homework every afternoon.12.I _______ (work/works) hard at school.13.My family __________ (1) to the beach last summer. We __________ (2) in the sand, __________ (3) the waves, and __________ (4) ice cream. I __________ (5) swimming in the sea because it __________ (6) very cold.14.Which of these is an animal?A. TableB. DogC. ChairD. Pen15.Which color is the sun?A. YellowB. GreenC. BlueD. Red16.We ______ (study) for the test all weekend. We ______ (read) our books and______ (review) the notes. Yesterday, we ______ (take) the test, and I ______ (think) I ______ (do) well. I ______ (be) happy with my result.17.I __________ (play) the piano every day after school. My teacher __________ (give) me new pieces to practice. I __________ (like) playing classical music, but my favorite songs __________ (be) pop songs. Sometimes, I __________ (play) with my friends after practicing.18.Jack and his sister are at the __________. They are looking at the __________ and __________. Jack points to a big __________ and says, “That’s a giant fish!” They take many pictures with their __________.19.I ______ (have) a pet cat named Tom. He ______ (be) very playful. Every day, he ______ (chase) after a ball. Last night, he ______ (catch) a mouse in the kitchen. I______ (give) him a treat for being so clever.20.We ________ (go/went) to the zoo last weekend.21.I __________ (read) a great book last week. It __________ (be) about a young girl who __________ (travel) to a magical land. The book __________ (have) many exciting adventures, and I __________ (really / enjoy) reading it. My friend __________ (give) me the book as a gift, and I __________ (feel) very happy. I __________ (decide) to read the next book in the series.22.Which one is a body part?A. NoseB. TableC. ChairD. Spoon23.I love to go on family ______. Last summer, we went to the ______ for a week. We stayed in a ______ and swam in the ______ every day. My brother enjoyed fishing, whileI preferred to play in the ______. In the evening, we would sit by the ______ and have dinner.24.Yesterday, I ______ (eat) lunch at a restaurant. My friends ______ (order) pizza, and I ______ (choose) spaghetti. We ______ (enjoy) our meal, and then we ______ (go) shopping. It ______ (be) a nice day.25.Which sentence uses the correct subject pronoun?A. He is my friend.B. Him is my friend.C. Her is my friend.D. He my friend is.26.She _______ (eat / eats / ate) dinner at 6 p.m.27.Which animal is known for its trunk?A. ElephantB. TigerC. GiraffeD. Zebra28.Which one is a common pet?A. DogB. LionC. TigerD. Elephant29.I __________ (study) math in school. My teacher __________ (teach) us how to add and subtract numbers. After math class, we __________ (learn) about science. I__________ (like) science very much.30.What do you call a young dog?A. PuppyB. KittenC. CalfD. Lamb31.I _______ (watch/watches) TV in the evening.32.They _______ (play) soccer on weekends.33.We __________ (1) to a new restaurant last night. The food __________ (2) delicious. I __________ (3) pasta, and my friend __________ (4) chicken. After dinner, we __________ (5) a walk along the river. It __________ (6) a lovely evening.34.My parents _______ (take) me to a new restaurant last night. We _______ (try) some delicious food, and I _______ (really) like the pizza. After dinner, we _______ (go) for a walk in the park. It _______ (be) a nice evening.35.I _______ (be) very happy today.36.We _______ (study) English at school.37.I _______ (visit) my grandparents this weekend.38.Which of these is a day of the week?A. JanuaryB. SundayC. SummerD. Holiday39.My favorite food is __________. I usually eat it for __________. I like to add__________ and __________ to it. It tastes very __________. Sometimes, I also have__________ with it, such as __________ or __________. I like to drink __________ with my meal. It makes me feel __________.40.I _______ (speak) to my friend on the phone right now.41.They _______ (be) from China.42.She _______ (eat) lunch at 12 o’clock.43.Which animal is known for its big ears?A. DogB. ElephantC. TigerD. Cat44.Which of these is a type of bird?A. DogB. TigerC. ParrotD. Elephant45.Which of these is a time of day?A. SundayB. RedC. ChairD. Car46.They _______ (study) for the test tomorrow.47.Sarah is reading a storybook in her room. The book is about a little __________ who goes on an adventure. The __________ is very kind and helps the little animal find its way home. In the end, the __________ becomes friends with the little animal. Sarah is very __________ and loves reading this story over and over again.48.She _______ (wear) a red dress today.49.I ______ (like) to read books in the evening. Last night, I ______ (read) a mystery novel.50.We _______ (have) a party next Saturday.(答案及解释)。
小学上册第9次英语第六单元全练全测
小学上册英语第六单元全练全测英语试题一、综合题(本题有100小题，每小题1分，共100分.每小题不选、错误，均不给分)1.The ________ was a key event in the struggle for civil rights.2.What do you call the act of planting seeds?A. HarvestingB. CultivatingC. SowingD. GrowingC3.I enjoy ___ (going) to the zoo.4.What do we call the action of reading aloud?A. RecitingB. NarratingC. SpeakingD. RecappingA5.My _____ (邻居) helps me with my homework.6.What is the primary ingredient in chocolate milk?A. CocoaB. SugarC. MilkD. Cream7. A physical change does not produce a new ______.8.I have a ___ (pet) turtle at home.9.I enjoy ______ songs on the radio. (listening to)10.The _____ (大象) is known for its large ears and trunk. 大象以其大耳朵和长鼻子而闻名。
11.My cat loves to watch ______ (小鸟) outside.12.Which animal says "woof"?A. CatB. DogC. CowD. SheepB13.What do you call a young whale?A. CalfB. PupC. KitD. Lamb14.What do you call a story that teaches a lesson?A. FableB. MythC. NovelD. Biography15.What do we call a device used for making calls?A. TelevisionB. ComputerC. PhoneD. RadioC16.An atom is the smallest unit of a ______.17. A dilute solution has a low concentration of _____.18.What do we call a group of wolves?A. PackB. FlockC. SchoolD. Herd19.The pyramids were built as _____ for the pharaohs.20.The birds are ______ in the trees. (singing)21.The flowers are _______ (blooming) beautifully.22.I like to water the _____ (草).23. A __________ is a type of chemical bond where electrons are shared.24.What is the name of the famous structure in Egypt that was built as a tomb?A. Great WallB. ColosseumC. PyramidsD. ParthenonC25.It is hot in the ___. (summer)26.The __________ is the measure of how tightly packed particles are in a substance.27.What do you call a large animal that lives in the ocean?A. FishB. WhaleC. SharkD. DolphinB28.There are _____ bananas on the counter. (two)29.What animal is known for having a long neck?A. ElephantB. GiraffeC. KangarooD. ZebraB30.How many players are on a baseball team?A. 9B. 10C. 11D. 1231.The __________ (悬崖) is dangerous but beautiful.32.All living things are made up of _____.33.The first successful flight of a hot air balloon was in _______.34.She is ________ her favorite song.35.What is the term for a young peacock?A. PeafowlB. ChickC. HatchlingD. KeetB36.What do we call the time of year when it gets warmer?A. WinterB. SpringC. SummerD. Autumn37.The first electric car was invented in the _______ century. (19)38.The __________ is the area of land where people live.39.The turtle moves ___. (slowly)40.The rooster crows in the _________. (早上)41.The __________ is a famous area known for its outdoor activities.42.What do you call a person who studies the weather?A. MeteorologistB. BiologistC. ChemistD. GeologistA43.The __________ (历史的交互影响) shapes relationships.44.My cousin is a passionate __________ (运动员).45. A chemical reaction can produce _____ and heat.46.Astrobiology studies the possibility of ______ in the universe.47.I want to ________ a new bike.48.What do you call the smallest unit of life?A. OrganB. TissueC. CellD. OrganismC49.I enjoy painting pictures of ______ (风景) in my free time.50.The ______ is very passionate about education.51.What do we call the event that happens every year in December?A. ChristmasB. HalloweenC. ThanksgivingD. New Year52.The __________ (历史的声音) resonates with humanity.53.Which fruit is yellow?A. AppleB. BananaC. GrapeD. CherryB54.What is the process of water turning into vapor?A. EvaporationB. CondensationC. PrecipitationD. Sublimation55.The ______ (小鸟) flies south for the winter.56.The main gas produced during respiration is _______.57.How many strings does a standard guitar have?A. 4B. 5C. 6D. 7C58.What do we call a place where animals are kept?A. ZooB. FarmC. ParkD. Garden59.The __________ (历史的循环) shows patterns in human behavior.60.The Sun will eventually become a red giant and ______.61.What do we use to cut paper?A. GlueB. TapeC. ScissorsD. RulerC62.My friend is a ______. He enjoys trying new foods.63.The ______ (nucleus) is the center of an atom.64.What is the capital of the USA?A. LondonB. ParisC. WashingtonD. C. D. New York65.The cat is ______ (sleeping) on my lap.66.What is the primary color made by mixing red and blue?A. GreenB. PurpleC. OrangeD. Brown答案:B67.My sister loves __________ (动物园).68. A ________ (泥土) test can improve growth.69.The __________ is important for understanding Earth's natural resources.70. A ________ (企鹅) waddles on ice and is very cute.71.The __________ is an area with extreme weather conditions. (极地)72.My grandma bakes ____ (bread) every week.73. A substance that speeds up a chemical reaction is called a ______.74.Carbon dioxide is produced during _____ (cellular respiration).75.What do you call the person who teaches you in school?A. DoctorB. TeacherC. EngineerD. Chef76.I like to _____ (听音乐).77.It is ______ today. (rainy)78.The _____ (植物观察) helps understand biodiversity.79.What do you call a person who studies space?A. AstrophysicistB. AstronomerC. GeologistD. BiologistB80.My teacher reads us stories about ______ (动物). They are always very ______ (有趣).81.Certain plants produce ______ that are used in perfumes. (某些植物产生用于香水的香料。
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1.
Linear prediction analysis is used to obtain an eleventh-order all-pole model for a segment of voiced speech that was sampled at a rate of Fs =8000 samples/second. The system function of the model is:
11
111
11()()11k
k i k i G G G H z A z z z z α−−=====−−∑∏ Table 1 shows five of the roots of the eleventh-order prediction error filter,()A z
.
Table 1: Root locations of eleventh-order prediction error filter in the z-plane (a) Determine where the other six zeros of ()A z are located in the z-plane. If you cannot precisely determine the pole locations, explain where the pole might occur in the z-plane.
(b) Estimate the first three formant frequencies(in Hz) for this segment of speech. (c) Which of the first three formant resonances has the smallest bandwidth? How is this determined?
2. A casual LTI system has system function:
1
12314()10.250.750.875z H z z z z
−−−−−=−−− (a) Use the Levinson-Durbin recursion to determine whether or not the system is stable.
(b) Is the system minimum phase?
3.
A speech signal frame (windowed using a Hamming window) has energy:
(0)2
[]1000n n
m E s m ==∑
Using the autocorrelation method of analysis on this speech frame, the first 3
PARCOR coefficients are computed and their values are:
1230.5
0.40.5
k k k =−==
Find the energy of the linear prediction residual, 32[]n n m
E e m =∑that would be
obtained by inverse filtering []n s m by the optimal third order predictor inverse filter, 3()A z .。