周周练9
2023-2024学年外研版英语八年级上册周周练(Module 9含解析)
2023-2024学年外研版英语八年级上册周周练（Module 9含解析）Module 9——2023-2024学年外研版英语八年级上册周周练考查范围：Module 9一、单项选择1.It's best not to run away from our problems. We should always try to _____ them.A. solveB. takeC. getD. write2.Every morning he spends _______ hour doing exercise.Then he goes to _____ work.A. a;/B. a;aC. an;theD.an;/3.—What is the population of Beijing—Sorry, I don't know. But I think it is _____ than that of Jinan.A. largerB. fewerC.moreD. less4.If the company fails（未能）to make enough money,it will have to _____.A. take awayB. close downC.break upD. set off5.Grace often gets nervous before she gives a speech ______.A. in publicB. in futureC.in commonD. in need6.Nowadays, _____ people like HUAWEI phones better, and about four-fifths of them _____ adults.A. a number of; areB. a number of;isC. the number of; areD. the number of;is7.—The pictures of Mars taken by Tianwen 1 have become very popular recently（近来）.—Yeah. They receive ______ Internet hits（点击）a day.A. thousands ofB. thousandC. hundredD. hundreds8.Nowadays, ______ farmers leave their hometown to search for work in the cities.lion ofB.two millionslions ofD.two millions of9.Students in Grade Nine _____ a maths exam at this time yesterday.A. takeB. are takingC. were takingD. have taken10.—Oh! What's wrong with your finger—I hurt it while I _____ a model plane.A. madeB. was makingC. am makingD. make二、阅读理解AAre you the only child in your family Have you heard of"the second-child policy（政策）"Everyone knows the one-child policy. It is a population control method （控制方法）.The Chinese government aimed（打算）to control the increasing population at that time. Many Chinese couples understood that and followed this policy for nearly 40 years. Everyone should be responsible for our country.However, as time goes by, some problems appear in our society. At present, these problems are mainly about:●The number of workers changed from about 960 million in 2023 to 940 million in 2023. The number changed to 930 million in 2023 and fell by29 million by 2023.●China is now getting into an aging society. There will be more old people in the following years. But the society will be short of doctors and nurses to take care of them.●The population of China will become smaller and smaller if the one-child policy continues（持续）.It's the basic reason that leads to the two problems above.That's why the Chinese government began the second-child policy on January 1st, 2023. It allows each family to have a second child. The government expects it can help solve those social problems gradually（逐渐地）.This policy will help offer enough workers in the future and prevent our country from entering the aging society. It is reported that there will be around 2.5 million newly-born babies each year.11.From the passage, we know that ______.A. our government is facing 3 main problemsB. the one-child policy started on January 1st, 2023C. our population increased a lot from 2023 to 2023D. the second-child policy won't work at all12.The underlined word "that" in Paragraph 2 means ______.A. the familyB. the increasing populationC. the one-child policyD. the second-child policy13.The number of workers was ______ in 2023.A. 960 millionB. 940 millionC. 930 millionD. 29 million14.You may read this passage in the ______ part in a magazine.A. Travelling and TransportationB. Society and HistoryC. Food and HealthD. Science and Art15.The writer thinks it is ______ to announce（宣布）the second-child policy.A. impossibleB. uselessC. meaninglessD. necessaryBThe world itself is becoming much smaller by using modern traffic and modern communication means（工具）.Life today is much easier than it was hundreds of years ago, but it has brought new problems. One of the biggest problems is pollution. To pollute means to make things dirty. Pollution comes in many ways. We see it, smell it, drink it and even hear it. Man has been polluting the earth. The more people there are, the more pollution there is. Many years ago, the problem was not so seriousbecause there were not so many people. When the land was used up or the river was dirty in one place, man moved to another place. But this is no longer true.Man is now slowly polluting the whole world.Air pollution is still the most serious. It's bad for all living things in the world,but it is not the only one kind of pollution. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us angry more easily.Many countries are making rules to fight pollution. They stop people from burning coal in houses and factories in the city, and from putting dirty smoke into the air. Pollution by sulfur dioxide （SO2）is now the most dangerous kind of air pollution. It is caused by heavy traffic. We are sure that if there are fewer people driving, there will be less air pollution. The earth is our home. We must take care of it. That means keeping the land, water and air clean. And we must pay attention to the rise in pollution at the same time.16.According to the passage,_____, our world isbecoming much smaller.A. because of the rise in pollutionB. thanks to the science developmentC. because the earth is being polluted day and nightD. because the earth is blown away by the wind every year17.Hundreds of years ago, life was ____ it is today.A. as easy asB. much easier thanC.as hard asD. much harder than18.In Paragraph 1, the underlined word " it" means ____.A. rubbishB. noise pollutionC. air pollutionD. water pollution19.Which of the following is NOT trueA. Many countries are making rules to fight pollution.B. The pollution of the earth grows as fast as the world population does.C. The problem of the pollution is not so serious because there are not so many people living on the earth.D. If people could go to work by bus or by bike instead of by car or by motorbike, it would be helpful in fighting against the problem of SO2.三、补全对话A.Do you know what the worlds population is todayB.I’m reading a book about the world's population these days.C.I think we must do something to control the population.D.It’s too bad.E.It was no more than 2 billion.A : What are you up toB:① _______A:Sounds good! What’s it aboutB:It says that 1,000 years ago ,the world’s population was very small.②_____A : ReallyB:Yes, but during the last three or four hundred years, the world’s population has grown very quickly. Today ,it is growing faster than ever.③______A:Sorry, I don't know.B: It’s more than 7 billion.A: It’s so large. ④_______B:Yes. If we don’t control the population ,there will not be enough space on the earth in 600 years.A:⑤______四、根据汉语提示填空1.I don't think money will ______（解决）all my problems.2.Now,some old towns are losing their ______（当地的）character（特色）.3.It's good manners to keep your voice down in ______（公共的）places.4.The night in the countryside is ______（更安静的）than that in the big city.5.—Have you read the ______ (报告) about the world's population —Yes. I read it yesterday.五、书面表达China Youth 正在就城市的人口增长以及它所产生的一系列问题做调查。
七年级英语下学期第9周周练试题试题
溧水县孔镇中学2021-2021学年七年级英语下学期第9周周练试题姓名_____________ 评价______________一、单项选择1.-Look!Is that____________UFO in the east?-Of course not.It’s just___________plane flying over our town.A.a;theB.an ;theC.a;aD.an; a2.-Why don’t you get ready for your co ming trip?-Don’t worry._________is ready now.A.SomethingB.EverythingC.NothingD.Any things3.-Is___________not here today?-Andy Lau is ill at home.A.someoneB.anyoneC.everyoneD.no one4.-Did you__________a dog outside just now?-No.It was so quiet.A.listenB.listen toC.hearD.hear to5.-How did you feel when you saw Tom?-Well, I was very___________.I thought he was in Shanghai.6.-There are some things on the floor.Will you___________,Jack?-OK.Mrs Lee.A.pick them upB.pick it upC.pick up themD.pick up it7.-Your cousin stayed with you all day ,right?-__________.My father took him to the museum in the morning.A.Yes,he didB.No,he didn’tC.Yes ,he wasD.No ,he wasn’t8.-I met my aunt_____________yesterday.-You must be very happy to see each other.A.on my way home.B.on my way to homeC.in my way homeD.in my way to home9.-___________did you find the little cat?-Well,I followed the sound she made.She kept miaowing.10.-I am afraid that a ghost is behind the tree!-___________1There is no ghost in the world.A.Be carefule onC.That’s OKD.You’re welcome11.Stop__________TV all day long.Please spend more time on your study.12.She wanted___________a new pencil-box.13.There were_____________people in the street at midnight,so he drove fast.A.a fewB.fewC.littleD.a little14.______knows anything about him,because he never tells us _______about himself.A.Anybody;somethingB.Everybody;nothingC.Nobody;somethingD.Nobody;anything15.My mother is ill in bed,and she feels very ______________.16.My sister___________her bag in the room,but she couldn’t___________it.A.look for ;findB.find;look forC.looked for ;findD.found;look for17.The cat often miaows at night.It___________a ghost.A.soundB.soundsC.sounds likeD.sound like18.They turned around and found___________near the window.A.strange somethingB.something strangeC.strange anythingD.anything strange19.___________-me carefully, or you won’t___________anything.A.Listen to ;listenB.Listen;hearC.Listen;listenD.Listen to ;hear20.Peter walked into the room____________because hs father was sleeping.二、用所给词的适当形式填空1.The girl is ___________(amaze).She can speak six languages(语言).2.Why do you stop____________(prepare)for your exam?3.The girls are afraid of ___________(walk)alone at night.4.The boy is giving his cat a shower___________(careful).5.It was very cold at first.Two hours__________(late),we felt warm.6.My grandpa sometimes likes to say something to___________(him).7.There are some_________(bush)behind the house.8.Tom___________(tell) me the whole story yesterday.9.This book is ________(interest)and we all like it.10.My door is always_____________(open)to visitors.11.Does your father____________(real)enjoy the trip to Beijing?12.He looks so ___________(fun)in the red cap.13.My ____________(foot)are longer than my father’s.14.I think we will have a _____________(wonder)time there.15.My seven-year-old son can look after____________(him)now.16.The radio says it will rain____________(late)this afternoon.17.A ndy is a clever boy ,but sometimes he doesn’t do his homework_________(careful)enough.三、根据汉语意思完成以下句子1.像往常一样，老奶奶开着门等着儿子。
2020年上学期一年级数学素质班第1-14周周练(学生版)
2020秋一年级数学实验班第1周周练1、看图写数。
（）（）（）（）2、看数画“”。
5 86 93、找规律，填一填。
4、比一比，填一填。
（1）（2）比（）。
（填“多”或“少”）（）比（）少。
比（）。
（填“多”或“少”）（）比（）多。
5、把小优两只手中的数字加一加，再与对应的得数连一连。
6、小动物们坐着小火车去郊游，你能说说他们的前后顺序吗？（1）在的（前、后）面，在的（前、后）面。
（在正确答案（2）请你圈出前面所有的小动物，请你在最后面的小动物下画“ ”。
7、下图中的小动物都有一个编号，并且排成一横排跳舞。
（1）小猴是4号，小兔是1号，小兔在小猴的（）边；（2）小猪是5号，它的双手伸向它自己的（）边；（3）小猪在大象的（）边。
8、下图是武汉景点地图的局部，如果要从黄鹤楼去往琴台文化艺术中心，应该往哪个方向走？（用“东”、“南”、“西”、“北”表示）答：应该往（）走。
2020秋一年级数学实验班第2周周练1、画一画，使上下两行图形一样多。
（1）（2）2、看一看，比一比，在数量多的动物后面的括号内画“√”。
（）（）3、把数量同样多的动物连起来。
4、小动物们要到房顶修烟囱，请你帮它们选出合适长度的梯子，连一连。
5、小动物们都站在相同的漂浮着的木箱上，哪只小动物最重？哪只小动物最轻？请按照由轻到重的顺序标上1~3的序号。
6、比一比，请在先吃到桃子的小猴下面画“√”。
7、小狗、小兔和小袋鼠比赛跳远，谁跳得最远？请你比一比，按从远到近的顺序，用1、2、3给它们标上序号。
8、哪一边应该下沉？在该下沉的一边画上“√”。
2020秋一年级数学实验班第3周周练1、在下列分解算式对的（）里打“√”，错的打“×”。
2、看图在里填上正确的答案。
3、4、 看图列算式。
5、 小熊要买得数正确的胡萝卜，算一算，帮它圈出来。
6、左边图形加上右边方框内的哪个图形可以拼成一个长方形，圈出合适的图形。
7、小红的围巾破了一个洞，你能帮他挑选一块合适的布补上去吗？=8、下面A、B两个图形，分别是由下边哪两个图形重叠而成？2020秋一年级数学实验班第4周周练1、请你把爬得最高的蜗牛圈出来。
2023年高考英语写作微技能培养周周练9
Monday 满分范文晨诵Dear Anne ，(说明写信目的) I am writing to convey my gratitude for your kind help and care during my stay in Denmark, without which I wouldn't have enjoyed it so much .without which及虚拟语气的高级句式表达自己的感激(感谢的事由) During the week, the comfortable room, delicious meals and especially your friendly family all made me feel at home . Moreover, guided by you 分词作状语， I had a chance to visit some places of interest and be exposed to such a unique culture as well as beautiful scenery. Thanks to your generous help ， I do believe that I will do ＋动词原形强调信心have abetter understanding of your country and culture. (再次表达感谢，提出邀请)Thanks again for your kind help and I am sincerely 诚挚表示邀请looking_forward_to showing you around China in the near future. All the best wishes to you. Yours ，Li Hua假如你是李华，在丹麦访问学习的一周里你住在Anne 家里。
三年级奥数周周练 第9周 周期问题 (教师版)答案
第9周周期问题一、知识要点在日常生活中，有一些按照一定的规律不断重复的现象，如：人的十二生肖，一年有春夏秋冬四个季节，一个星期七天等等。
像这样日常生活中常碰到的有一定周期的问题，我们称为简单周期问题。
这类问题一般要利用余数的知识来解答。
在研究这些简单周期问题时，我们首先要仔细审题，判断其不断重复出现的规律，也就是找出循环的固定数，然后利用除法算式求出余数，最后根据余数得出正确的结果。
二、精讲精练【例题1】小丁把同样大小的红、白、黑珠子按先2个红的、后1个白的、再3个黑的的规律排列（如下图），请你算一算，第32个珠子是什么颜色？从上图可以看出，珠子是按“两红一白三黑”的规律重复排列，即6个珠子为一周期。
32÷6＝5（组）……2（个），32个珠子中含有5个周期多2个，所以第32个珠子就是重复5个周期后的第2个珠子，应为红色。
练习1：1.如图，算出第20个图形是什么？○△△□□□○△△□□□○△△……20÷6＝3（组）……2（个）答：第20个图形是“△”。
2.“数学趣味题数学趣味题……”依次重复排列，第2001个字是什么？2001÷5＝400（组）……1（个）答：第2001个字是“数”。
......3.把38面小三角旗按下图排列，其中有多少面白旗？38÷4＝9（组）……2（个）3×9＋2＝29（面）或38－1×9＝29（面）答：其中有29面白旗。
......【例题2】2001年10月1日是星期一，问：10月25日是星期几？【思路导航】我们知道，每星期有7天，也就是说以7天为一个周期不断地重复。
从10月1日到10月25日经过25－1＝24天，24÷7＝3（星期）……3（天），说明24天中包括3个星期还多3天。
所以从10月1日开始过3个星期，最后一天还是星期一，从这最后一天起再过3天就应是星期四。
练习2：1.2001年5月3日是星期四，5月20日是星期几？20－3＝17（天）17÷7＝2（星期）……3（天）答：5月20日是星期日。
周周练9
八年级英语第九单元复习【应掌握的词组】1. ping-pong player乒乓球运动员2. a great Chinese ping-pong player中国杰出的乒乓球运动员3. start hiccupping 开始打嗝4. too… to…太……，而不……5. write music谱写曲子6. a movie star电影明星7. learn to ride a bicycle学会骑自行车8. start learning开始学英语9. begin playing sports 开始进行体育运动10. a loving grandfather慈爱的祖父11. spend all one’s free time with sb.与某人一起度过了所有的业余时间12. a famous violinist 著名的小提琴手13. ice skating滑冰14. a kind and loving grandmother和蔼而慈爱的祖母15. a skating champion 滑冰冠军16. the famous Chinese pianist中国著名的钢琴演奏家17. a small boy(girl)孩提时期18. at the age of…在……年龄时19. take part in参加、加入20. begin to learn the accordion开始学习手风琴21. major in 主修，专修22. start for a place=leave for a place动身去…23. because of 因为、由于【应掌握的句子】1．When was he born？他是什么时候出生的？2．Who’s that? That’s Deng Y aping. She is a great Chinese ping-pong player.3．How long did Charles Osborne hiccup? He hiccupped for 69 years 5 months.4．Y ou are never too young to start doing things.你永远不会小到不能做事情的地步。
二年级上册数学试题-周周练习题(第9周)(含答案)沪教版
沪教版二年级数学上册周周练（第九周）7、3、6、9的乘、除法班级姓名直接写出得数。
3X6= Q---;-6 = 7X7-25=21---;-7=95-73=55-6X5=65+18=7X5=45---;-9-3=64---;-8 =6X9=8+8X9=－在0中填上“十”“一""X"或"-;-"'使下面各算式成立。
70707=56 30303=360606=30 90909=8二．（）里最大能填几？6X ()<20 ()X4<33 3X()<2X9 38>7X()6X ()<40-5 9X()<19+25（)X6<9X5 （) X9<46+18 四．概念填空。
1. 3个6就是6的（）倍，也是9的（2. 15、18、27、36、81中，（）和（3. 55-吵—吵－吵-•-•=35,•= (）倍。
）是3、6、9共同的倍数。
）。
4.(）比24多16;59比（）少21。
沪教版二年级数学上册周周练（第九周）参考答案直接写出得数。
3X6=18 Q---;-6=0 7X7—25=2421---;-7=3 95—73=22 55—6X5=2565+18=83 7X5=35 45---;-9—3=264---;-8 =86X9=54 8+8X9=80－ 在0中填上“十”“一""X"或"+",使下面各算式成立。
心7C±) 7=56 3G)心3=3心心6=3090心9=8三此题答案不唯一。
］二．（）里最大能填几？6X (3) <20(8)X4<333X (5)<2X9(7) X6<9X538>7 X(5)6X (5) <40—59X(4)<19+25(7) X9<46+18四．概念填空。
1.3个6就是6的(3 )倍，也是9的(2 )倍。
最新版牛津译林版九年级英语上学期第九次周周练测试题及答案
九年级上学期周周练质量检测一、单项填空(每小题1分，满分15分）( )1. All of us feel ______with the trip.A. pleasant; pleasingB. pleased； pleasingC. pleasant; pleasedD. pleased； pleasant ( )2. The music ______by Tan Dun sounds______.A. was written； wonderfulB. written； wonderfullyC. was written; wonderfullyD. written; wonderful( )3. Eddie was sleeping ______Millie was reading a magazine.A. untilB. whileC. beforeD. after( )4. ______ an actress, Gong Li ______awards for her films.A. As; is known for winningB. Like;isknown as winningC. As; is known as winningD. Like; is known for winning ( )5. The film festival ______some actors and filmmakers.A. is open forB. is open toC. is open asD. is open with( )6. There are no buses, _______ you’ll have to walk,A. soB. orC. butD. for( )7. I knew nothing about the accident _______ Millie told me.A. whenB. asC. untilD. after( )8. Have you decided ______abroad ______?A. to go; for further studyB. to go to; for study furtherC. to go; for study furtherD. to go to; for further study ( )9. _______ he exercises every day ______he is very healthy.A. Because; soB. Because； throughC. Because； /D. Though； /( )10. Since 1991，Jack ______an engineer.A. becameB. has beenC. wasD. had been( )11. By the speed of water flow, Tan made over 50 sounds from water.A. controlledB. controlC. controllingD. controls( )12. We should' give the boy another chance _____ he has made some mistakes.A. thoughB. whenC. unlessD. because( )13. Did you notice that Jim ______ swimming?A. has a real gift asB. has areallygift forC. has a real gift forD. has areallygift as( )14. ______ we are young，we shouldn’t be too afraid of making mistakes.A. ForB. BecauseC. SinceD. Because of( )15. He spoke so fast that lie was ______.A. out of breatheB. breathe heavilyC. out of breathD. breath heavily二、完形填空（每小题1分，满分10分）Angela has been crazy about writing since she was young. She got her first lesson m story-telling from her grandfather, who gave her words of love. He set off her imagination and influenced W much. Angela always had stories running __1 her head and as soon as she could write, she put them down on paper.Angela__2 remembered the call that changed her life. It was Tuesday, February18th when the telephone rang in the kitchen of her Los Angeles home. On the line was Marty Banderas, a literary agent(代理) to whom she had sent a draft of her novel three weeks earlier. She asked Angela some __3 information, like age and health condition.Angela felt strange and asked what that was about. Banderas only replied, “I’ve just sold your __4 for one and a half million dollars!”She sat down in shock. She had written over fourteen novels in twenty years, but each one had been __5 by publishers(出版商). Many people would have been discouraged(气馁的）,__6 not her. Each time，she just got down to writing another one. Her husband advised her to find something else to do, but she never__7 . Seeing this book published was the most__8 thing that has ever happened to her.Now she is a mother of three children, but she has never stopped writing, turning out novels between kids and dishes. She is writing another novel now, and she expects another success. Yes, her belief has brought her __9 ，and it has changed her life__10 . Angela is fully confident that she will enjoy a more successful and meaningful life as long as she keeps on with her dream.( )1. A. through B. with C. along D. across( )2. A. hardly B. probably C. clearly D.usually( )3. A. local B. public C. personal D.national( )4. A. Painting B. novel C. newspaper D. magazine( )5. A.accepted B. agreed C. refused D. enjoyed( )6. A. so B. or C. and D. but( )7. A. came back B. gave up C. went away D. got down( )8. A.boring B. tiring C. exciting D.interesting( )9. A. freedom B. success C. friendship D. beauty( )10. A. in time B. in public C. in return D. in surprise三、阅读理解(每小题2分，满分30分）(A)The song Happy Birthday to You is an example of just how interesting the world is. Think about this song---it is only 6 notes. Yet it is one of the best-known songs in the world. It was written in 1893 by Mildred and Patty Hill and first published with the words, “Good morning to you”.The words“Happy Birthday to You”were first seen in print in 1924, although the author is unknown. The Clayton F. Summy Company became the song’s publisher in 1935. Through a series of purchases and acquisitions(收购), the song now belongs to AOL Time Warner. ASCAP represents the song for public performancelicensing.The copyright to Happy Birthday to You should have expired(过期) in 1991, but copyright Act of 1976 extended(延长）it，and the Copyright Term Extension Act of 1998 extended it again, so the song is protected until 2030 at least.Happy Birthday to You brings in about $ 2 million per year. If you ever hear the song in a movie, TV show or an ad, a licensing fee has been paid. Any manufacturerthat plays the song pays a licensing. The manufacturer of any musical card playing the songs pays a licensing fee. This 6-note song is a big business!( )1. The song Happy Birthday to You was published first _____.A. in 1893B. in 1924C. in 1935D. in 1991( )2. The song Happy Birthday to You now belongs to ______.A. Mildred and Patty HillB. the Clayton F. Summy CompanyC. AOL Time WarnerD. nobody( )3. The copyright to Happy Birthday to You has been extended until ___ at least.A. 1935B. 1991C. 1998D. 2030( )4. If you play the song in your movie, you should _____.A. bring some moneyB. make a toyC. pay a licensing feeD. have a big business( )5. The best title for this passage is ______.A. How Music Licensing WorksB. The Tale of Happy Birthday to YouC. Licensing the Song of Happy Birthday to YouD. To Know More about AOL Time Warner(B)( )6. If you want to join the Sunshine Rock Band, you should play the ______well.A. pianoB. guitarC. drumD. violin( )7. Who can teach you to play table tennis?A. Mike.B. Joe.C. Mr. Zhang.D. Karen.( )8. You want to learn to play table tennis. Then you can go to Lantian Hotelon _____.A. FridaysB. SaturdaysC. SundaysD. Mondays( )9. You want to teach children to swim. Then you can call_______.A. 5487-6598B. 8665-7868C. 8472-9999D. 556-8823( )10. The ads(广告)above may be from ______.A. a newspaperB. a story bookC. a science bookD. a guidebook(C)There are several ways you can find out about the countries and places you wish to visit. You can talk to friends who have traveled to the places, you can go and see a colour film about them, or you can read a travel book.It seems that there are three kinds of travel books. The first are those that give a personal, subjective(主观的) idea of travels which their writer has got himself. These books can be useful if the writers share their traveling experiences with others. The second kindare those books which give objective(客观的) information of things to be done and seen.If a cultured person has written such a book about the facts of a place, then it is more useful. The third kind are those books which are called “a guide”to some place or other. If they are good, they will describe and explain the place in detail. Like the first kind , they can be interesting and exciting, but their main purpose is to help the reader plan his travel in the most practical way.Whatever kind of travel book you choose, you must make sure that the book does not describe everything as interesting, exciting or fantastic. You must also keep an open eyes on its date of publication(出版) because travel is very practical matter and many things change quickly in the 21st century. Finally, you should make sure that it’s easy to find the useful information for you travel.( )11. The passage was written to introduce_______.A. travel mapsB. travel booksC. travel filmsD. travel places( )12. The writer of the first kind of travel books gave his ideas after he _______.A. traveledB. read booksC. a lot of experienceD. surfed the Internet ( )13. The underlined phrase “a cultured person”means a person with ________.A. a good appearanceB. a good educationC. a lot of experienceD. a lot of money( )14. The date of publication must be noticed because ________.A. the prices of travel books may be differentB. the writers of travel books may be differentC. the information in travel books is always the sameD. the information in travel books is always changing( )15. According to the passage, it is best to read ______ before traveling to a place of interest.A. the first kind of travel booksB. the second kind of travel booksC. the third kind of travel booksD. some travel articles in newspaper四、词汇检测(每小题1分，满分10分）根据下列句子及所给汉语注释或通过上下文，写出空缺处各单词的正确形式。
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第四单元综合测试
姓名
一、思前想后，填补空白。
1. 圆的位置是由( )决定的，圆的大小是由( )决定的。
2. 圆的周长总是直径的( )倍，直径与周长的比是( )。
3. 等腰三角形有( )条对称轴，圆形有( )条对称轴。
4. 周长相等的长方形、正方形和圆，面积最小的是( )。
5. 甲、乙两个圆的半径比是2∶3，它们的直径比是( )，周长比是( )，面积比是
( )。
6. 如果要画一个周长为50.24厘米的圆，那么圆规两脚间的距离应该取( )厘米。
二、火眼金睛，明辨是非。
1. 在同一个圆里，两条半径就是一条直径。
( )
2. 两端都在圆上的线段叫做直径。
( )
3. 大圆的圆周率比小圆的圆周率大。
( )
4. 如果一个圆的半径增加3厘米，直径就增加6厘米。
( )
5. 圆的周长越长，它的面积越大。
( )
三、反复比较，认真选择。
1. 圆的半径扩大3倍，它的面积扩大( )倍。
A. 3
B. 6
C. 9
2. 用铁丝围成面积相等的正方形、长方形和圆，( )用的铁丝最长。
A. 长方形
B. 正方形
C. 圆
3. 半径2米的圆，面积和周长( )。
A. 相等
B. 不相等
C. 无法比较
4. 把一个圆沿着直径剪成两半，它的面积和周长( )。
A. 面积不变，周长增加
B. 面积增加，周长不变
C. 面积周长都变
四、认真计算，不出差错。
1. 求出下面圆的周长和面积。
2. 求出下面各图中阴影部分的面积。
五、走进生活，解决问题。
1. 一个圆形花坛，直径12米，在它的周围
2. 保龄球的半径大约是1dm，球道的
有一条宽2米的环形小路，小路的面积是多长度约为18m，保龄球从球道的一端少平方米？滚到另一端，最少要滚动多少周？
3. 一只闹钟，它的分针长4㎝，这根分针
4.从一个长10分米，宽8分米的长方形
的尖端转动一昼夜所走的路程是多少厘米？木板上锯下一个最大的半圆，剩下的木3dm
8cm
4cm
6cm
←6dm
6dm
同学们，第四单元我们已经学完了，下面让我们
来检测一下自己的学习情况吧！相信你一定是最优
12
93
6
板是多少平方分米？
1、百分数的意义和写法
姓名
一、想一想，填一填。
1. 表示一个数是另一个数的( )的数，叫做百分数，百分数也叫做( )或( )。
2. 百分之九十四写作( )，它含有( )个1％，再添上( )个1％，就是1。
3. 一本书，已经看了85％，这句话中，是把( )看作单位“1”，表示（ ）是（ ）的85％。
4. 三月份的水电费比二月份节约8％，三月份的水电费是二月份的（ ）。
5. 如果女生人数占全班人数的40％，那么男生人数占全班人数的（ ）。
二、请你来当小裁判。
1. 分母是100的分数叫做百分数。
（ ）
2. 一块布长27％米。
（ ）
3. 最大的百分数是100％。
（ ）
4. 4％与1004
所表示的意义相同。
（ ）
5. 25％的计数单位是1％，它含有25个1％。
（ ）
三、写出下面各百分数。
百分之四
写作 百分之三百写作
百分之二百点三写作 百分之零点二五写作 四、试着写出下面各题中百分数的具体含义。
1. 实验小学有75％的学生参加了艺术班的学习。
这里的75％表示（ ）。
2. 空气中约20％是氧气。
这里的20％表示（ ）。
五、猜成语 (1)1％( ) (2)50％( )
2、百分数与分数、小数的互化 一、想一想，填一填。
1. 把小数化成百分数，只要把小数点向( )移动( )位，同时在后面添上( )；把百
分数化成小数，只要把( )去掉，同时把小数点向( )移动( )位。
2. 42个0.01用小数表示是( )，读作( )；用百分数表示是( )。
3. 140个1％用百分数表示是( )，用小数表示是( )。
4. 在1
5.6后面添上一个百分号，这个数就( )为原数的( )。
5.把分数化成百分数，通常先把分数化成（ ）（除不尽的，通常保留（ ）小数），再 把（ ）化成百分数；把百分数化成分数，先把百分数改写成（ ），能（ ） 的要约成（ ）分数。
二、用百分数和小数表示涂色部分。
百分数( ) 百分数( ) 百分数( )
小数 ( ) 小数 ( ) 小数 ( )
三、请你来比一比。
55％ 4.5 8.6％ 0.86 240％ 2.4 60％
0.6
四、请你来填一填。
分数 43
54
小数
0.625 百分数
35％
2.4％。