完整版九年级Unit9测试题和答案

完整版九年级Unit9测试题和答案
完整版九年级Unit9测试题和答案

九年级 Unit9 测试题和答案

. 单项选择 ( 30 分 ) ( )1 He told me that the final examination ___ next Thursday. A. is given B. will be given C. would be given

( )2. Water _____ into ice. A. will changed B. must be changed C. can be changed ( )3. An accident ______ on this road last week.

A. has been happened

B. happened

C. was happened ( )4.Cotton (棉花) ______ in the southeast of China. A. is grown B. are grown C. grows (

)5.So far, the moon ____ by man already.

A. is visited

B. will be visited

C. has been visited

( )6. When I passed by the park, I noticed the children _________ basketball there.

A. play

B. to play

C. playing ( )7. -Sorry, Mary. I took your no tebook _________ . --It does n 'matter.

A. by mistake

B. by accident

C. by hand ( )8. I didn 'twake up ________ I heard the alarm clock. A. after B. since C. until ( )9. Mum added some _______ but the chips are not ___________ .

A. salt, enough salty

B. salty, salt enough

C. salt, salty enough ( )10. -- ______ , you can work out the math problem very easily.

-- I see. Thank you very much, Miss Wang. A. By the way B. On the way C. In this way ( )11. - Leo, what do you think is the most helpful ____ in modern times?

-- I think it is the computer. A. invent B. invention C. inventor ( )12. -They decided that all the wood would ____ building .--Of course.The building needs it. A. be used for B. be used by

( )13. This kind of machine ___ cutting paper. A. used for (

)14. -- ___ our plan, there will be a meeting next Monday.

-- Oh, thanks.I will be there on time.

( )16. The milk _________ strange, It has gone bad, I think.

A. is tasted

B. taste

C. tastes

( )17. I don 'tlike chocolate, but Sue ______ . A. does B. liked C. doesn 't.

( )18.I will be away for _________ . A. sometimes B. some time C. some times ( )19. He tried his best to do everything to make his young sister ______ a gain.

A. laughing

B. to laugh

C. laugh ( )20. What ________ will happen? A. do you think B. are you thinking C. you think ( )21.She tried many times to pass the exam, and she succeeded _____ the end.

A. by

B. at

C. in

(

)22.James didn 'tcome _______ the bell rang. A. until B. when C. before

( )23.Only a few hundred of these animals _________ today. A. stay B. remain C. keep

( )24 ____ he isn 'ttall enough, he is good at basketball. A. Because B. Although C. Since ( )25.Take these plates away to the kitchen and _________ some clean ones.

A. take

B. bring

C. fetch

C. be used as

B. be using for

C. is used for

A. With the help of (

)15. - The sun ______ A. can be seen

B. Because of at night. Do you agree with me?

B. can t 'see

C. According to

- Yes, I think so.

C. can 'tbe seen

( )26.They are made ________ for 14 hours a day. A. work B. to work ( )27. Children need to ________after well. A. be look B. be looked ( )28. The trees must ______ three times a week. A. water B. wateri ng ( )29. -Here is a piece of paper for you ! -Oh , thanks . It ' _s _____ for me to write a long letter on . A big eno ugh B eno ugh large C small eno ugh

( )30. I n his free time, he ofte n teaches me how ____ . A. swim B. swimmi ng C. to swim 二.完形填空 (10分)

People all over the world enjoy sports, because sports can help them keep __1 __ and live

long. Some sports or games go back __2__ years, like running or jump ing. Chin ese box ing, for example, has a very long history. But basketball and volleyball are very new. And new sports or games come to world n early all the time.

Many people like to watch __3 play sports games. They don 'play themselves. They buy tickets or 4__ their TVS to watch the games. Often they get very __5 and happy when their ” player or team 6 the match.

People play differe nt games in differe nt seas ons. Swimmi ng is fun in warm weather, _ 7__ skat ing is good in win ter.

Some sports are __8 ___ interesting that people everywhere enjoy them. For example, basketball __ 9__ by about 100 million people in more than 200 countries. People can play it in parks, schools or factories. __10__ fun it is to watch an NBA match! ( )1. A. health B. healthy C. healthily ( )2. A. thousand B. thousa nd of C. thousa nds of ( )3. A. others B. the others C. the other ( )4. A. turn on B. turn off C. turn dow n ( )5. A. i nterested B. excit ing C. excited ( )6. A. beats B. wins C. fights ( )7. A. though B. so C. but ( )8. A. very B. quite C. so ( )9. A. plays B. is played C. is playi ng (

)10. A. What 阅读理解 (20分)

B. What a

(A)

C. How

Although bicycles are still an importa nt means of tran sportati on for many people at prese nt, more and more people are ridi ng them, purely for exercise and fun. This is especially true in some developed coun tries where cars are a com mon part of com mon people's life. However, two cen turies ago, whe n bicycles were first inven ted, they were used only for tran sportati on.

In the eighteenth century, people usually traveled by horse and wagon (四轮马车).Many people worked in citied, but they liked to go to the coun tryside for weeke nds and holidays. But not everybody could afford a horse or a wagon. So there was a special need for the invention of a cheap and convenient means of tran sportati on.

The n in 1790 the first bicycle was made. People called it

'the horse on wheels ".Compared

with the bikes we ride today, it was an extremely simple one. In 1861, after many improvements were made, the bicycle became a real means of tran sportati on. People liked bikes because they were n'tas expe nsive as horsed and did n'tn eed to be fed. Also, they could go just about any where and were easy to ride. ( )1.Bicycles today are used by more and more people for __________ .

A.tak ing the place of cars and bused

B. exercise and fun

C. ridi ng in the crowded street

C. worked C. are look ing C. be watered

( )2. how did the people travel in the eighteenth century? A. By bus B. By horse and wago n C. By bicycle

( )3.The first bicycle was inven ted __________ .

A. in 1790

B. in 1861

C. before the wagon was inven ted

()4. Why did people like bicycles?

A. Because bicycles were cheap and didn 'need to be fed.

B. Because bicycles could go just about any where and were easy to ride.

C. A and B. (

)5. From the passage we can know that ________ . A. people in developed coun tries use more bicycles B. the bikes we ride today are extremely simple

C. not all people in the eightee nth cen tury could travel to the coun tryside by horse and wago n

(B) Don keys (驴)in Guizhou

A long time ago there were no don keys (驴)in Guizhou. One day a mercha nt (商人) from ano ther part of the country went there and took a don key with him. Later the don key got sick and the mercha nt left it beh ind and went on his jour ney. When the don key was well aga in, it ran away into the n earby forest.

The tigers in the forest thought that the don key was a stra nge ani mal and they were afraid of it. When ever it brayed (驴叫) they all ran away as fast as they could .

After a few mon ths, the tigers became frie ndly with the don key. They played many games with it, but

they were still afraid of it.

One day the don key became very an gry. It kicked one of the tigers with its hind (后面的)

legs. The tigers were very surprised.

“ That mustbe all it can do whe n it is an gry. ” they said. Then all the tigers jumped on the

don key and killed it. ( )6. Why did the donkey stay in Guizhou? Because he ______ . A. got ill B. got tall C. got fat ( )7. Dogs bark (吠),don keys _______ . A. shout B. bray C. say ( )8. Who became frie ndly with the don key? A. The dog

B. The tiger

C. The cat

( )9. What did the don key do whe n he was well aga in? He went ____ .

A. to the tree

B. home

C. into the forest

(

)10. All the ______ jumped on the don key and killed it. A. tigers B. dogs C. wolves

四. 情景对话(5分)

A: Good morning. 1

B: Yes, please. I am look ing for a mobile phone, but I have no idea.

A: We have got all kinds of mobile phones here, which do you prefer, Sieme ns, Nokia or Motorola?

B: I really know little about them. Which one sells best these days?

A: Mm ….._2_ . B: How much is Motorola?

A: _3_ . The newer, the more expensive. B: _4_

A: What about this one? It looks nice and works well. B: 5 .

A: 1,000 yua n. B. Ok. I will take it. Tha nk you. 五.

词汇 A)根据句意及首字母提示,补全单词.(5分)

1. China is an a____________ country.

2. The flowers give out a p __________ smell.

3. ____________________________________ This kind of keys are made of m __ .

4.The cars are p in this

A. Motorola is more popular, I thi nk.

B. I want one, n ewer but too expe nsive.

C. 900 yua n.

D. Can I help you?

E. . How much is it?

factory.

5.Water can turn into ice when the temperature is b _________ zero.

B)用括号内所给动词的正确形式填空。(16分)(请注意时态和语态两个方面)

1.1 t's said(据说)that the long bridge _____________ (build ) in two mon ths .

2. Where to have the meeting ____________ ( discuss) now .

3. Which Ianguage _____ the most widely ________ ( speak) in the world ?

4. The room ___________ (clea n) by me every day.

5. Last year a large number of trees ____________ (cut) down .

6. Ca n the magaz ine ______ (take) out of the library?

7. The old man is ill. He _____________ (must send) to the hospital.

8. Vegetables, eggs and fruits ____________ (sell) in this shop.

六.改正下列句子(12分

1. This house built 100 years ago. __________________________________

2. Football plays in most coun tries of the world. _________________________________

3. Why did the letter send to the wrong address? ________________________________

4. A garage is a place where cars repair. ______________________________

5. Where are you born? __________________________________

6. How many Ian guages are speak ing in Switzerla nd? _____________________________

7. Somebody broke into our house but no thi ng stole n. _____________________________

8. When was inven ted the bicycle? ________________________________

9.1 have a lot of homework to be done toni ght. ______________________________

10. Lei Fen g's n ame remembered by all Chin ese people. _____________________________

11. The music is sounded beautiful. ________________________________

12. By who was the tea discovered ? ______________________________

七.书面表达.根据下表内容,写一篇短文.字数不少于70词,开头已给,但不计入总数 (15 分)

There are many inventions that have caused great changes in the world. Here 'a short in troduct ion. The digital camera was inven ted by …

答案:

一. 1—5 CABCA

二.1—5 CACCC 6---10 BACCC 11—15 CABCA 16—20 CABBC

三. 1—5 BCAAC 6—10 BCCBA

四.1—5 BBACC

五. 1—5 ACFBG

六. A)1. ancient 2. pleasant 3. metal 4. below 5. produced

B) 1. pleasant 2. has risen 3. discovered 4. used 5. inventions 6. thrown 7. helpful

七. 1. was invented by 2. develop , developed 3. sour taste

八. 书面表达

There are many inventions that have caused great changes in the would. Here's a short introduction. For example, the digital camera was invented by Steven J.Sasson. It was invented in 1975 and it is used for taking photos. The telephone was invented by Alexander Bell in 1876. It 's used for communicating with others. The radio was invented by Grglielmo Marconi in 1895. It 's

used for listening to news and music.

九年级英语全册Unit9IlikemusicthatIcandanceto单元综合测试题1新版人教新目标版

Unit 9 单元测试题 1 Written test part (共95分) Ⅴ.单项选择(每小题1分,共15分) 从A、B、C、D四个选项中选择可以填入空白处的最佳答案。 ( ) 21. They all suppose England will win the football game, but I will stick _______ my feelings and say that France will win. A. for B. at C. to D. with ( ) 22. —What’s wrong with you, Mary? —I have terrible _______ in my stomach. A. pains B. Noises C. senses D. mysteries ( ) 23. —What do you think of the music? —It’s very _______, and I’d like to listen to it again. A. strange B. intelligent C. smooth D. common ( ) 24. This park is much _______ than that one. Don’t you think so? A. large B. larger C. largest D. the largest ( ) 25. —Nick is an excellent student. —I agree with you. Our teachers always _______ him. A. reflect B. recall C. pardon D. praise ( ) 26. Kelly’s brother prefers _______ table tennis to _______ it. A. watch; playing B. watching; play C. watch; play D. watching; playing ( ) 27. _______ you are so weak, why not stay at home and have a rest? A. Since B. So C. Until D. After

九年级英语Unit9基础测试卷一(含答案)

Unit9基础测试卷一(含答案) 一、根据句意及首字母提示完成单词(10分) 1. As we all know, Abing made a living by p__________ on the erhu. 2. Julia is a m__________. She enjoys singing for the people. 3. I __________ (感觉到)a strong sadness and pain while listening to Erquan Yingyue. 4. Jennifer is a performer and good at __________ (表演)on the stage. 5. The doctor bounded the __________ (伤口)with gauze. 二、单项选择(10分) 1. —What are you looking for? —I’m looking for the music CD _____ you lent me yesterday. A. what B. who C. when D. that 2. The woman _____ came to see John yesterday is his aunt. A. who B. whom C. whose D. what 3. I like to listen to music that can make me _____. A. happy B. relaxing C. boring D. to relax 4. I prefer music that _____ me relaxed. A. make B. makes C. has D. have 5. —What do you _____ Mo Yan’s novels? —I like them very much. A. look at B. like C. think over D. think of

九年级数学圆测试题及答案

九年级数学圆测试题 一、选择题 1.若⊙O 所在平面内一点P 到⊙O 上的点的最大距离为a ,最小距 离为b (a>b ),则此圆的半径为( ) A . 2b a + B .2b a - C . 2 2b a b a -+或 D .b a b a -+或 2.如图24—A —1,⊙O 的直径为10,圆心O 到弦AB 的距离OM 的长为3,则弦AB 的长是( ) A .4 B .6 C .7 D .8 3.已知点O 为△ABC 的外心,若∠A=80°,则∠BOC 的度数为( ) A .40° B .80° C .160° D .120° 4.如图24—A —2,△ABC 内接于⊙O ,若∠A=40°,则∠OBC 的度数为( ) A .20° B .40° C .50° D .70° 5.如图24—A —3,小明同学 图24—A —2

设计了一个测量圆直径的工具,标有刻度的尺子OA 、OB 在O 点钉在一起,并使它们保持垂直,在测直径时,把O 点靠在圆周上,读得刻度OE=8个单位,OF=6个单位,则圆的直径为( ) A .12个单位 B .10个单位 C .1个单位 D .15个单位 6.如图24—A —4,AB 为⊙O 的直径,点C 在⊙O 上,若∠B=60°,则∠A 等于( ) A .80° B .50° C .40° D .30° 7.如图24—A —5,P 为⊙O 外一点,PA 、PB 分别切⊙O 于A 、B ,CD 切⊙O 于点E ,分别交PA 、PB 于点C 、D ,若PA=5,则△PCD 的周长为( ) A .5 B .7 C .8 D .10 8.若粮仓顶部是圆锥形,且这个圆锥的底面直径为4m ,母线长为3m ,为防雨需在粮仓顶部铺上油毡,则这块油毡的面积是( ) A .26m B .26m π C .212m D .212m π 9.如图24—A —6,两个同心圆,大圆的弦AB 与小圆相切于点P ,大圆的弦CD 经过点P ,且CD=13,PC=4,则两圆组成的圆环的面积是 ( ) A .16π B .36π C .52π D .81π

人教版九年级数学上册圆基础测试题

圆基础测试 1.如图,在⊙O中,弦的条数是() A.2 B.3 C.4 D.以上均不正确 2.如图,在半径为2 cm的⊙O内有长为2 3 cm的弦AB,则⊙AOB为() A.60° B.90° C.120° D.150° 3.如图,⊙ABC内接于⊙O,且⊙ABC=700,则⊙AOC为() (A)1400 (B)1200(C)900 (D)350 题1图题2图题3图 4.如图,⊙ABD的三个顶点在⊙O上,AB是直径,点C在⊙O上,且⊙ABD=52°,则⊙BCD 等于(). A.32° B.38° C.52° D.66°

题4图 题5图 5.如图,AB 是⊙O 的直径,弧BD =弧CD ,⊙BOD =60°,则⊙AOC =( ) A .30° B .45° C .60° D .以上都不正确 6. 如图所示,圆O 的直径为10,弦AB 的长为6,M 是弦AB 上的一动点,则线段的OM 的长的取值范围是( ) A. 3≤OM≤5 B. 4≤OM≤5 C. 3<OM <5 D. 4<OM <5 7 如图AB 为⊙O 的直径,C .D 是⊙O 上的两点,⊙BAC=30o,AD=CD ,则⊙DAC 的度数是( ) A .30o B .60o C .45o D .75o 题6图 题7图 8. 半径是5cm 的圆中,圆心到cm 8长的弦的距离是 cm 9.如图,CD 为⊙O 的直径,AB ⊙CD 于E ,DE =8cm ,CE =2cm ,则AB =______cm . 10.如图,⊙O 的半径OC 为6cm ,弦AB 垂直平分OC ,则AB =______cm ,⊙AOB =______. O D C B A

九年级英语Unit9练习题

九年级英语Unit9练习题 一.单词 1.There were four famous inventions in a______ China. 2. These cars were p_______ by the same company. 3. Don’t t_____ stones at the birds. 4. Few pears r________ on the trees after the heavy rain. 5. I don’t like the t_____ of the me at 6. Most green fruits are _____ (酸的). 7. Help yourself to this apple ____ (馅饼). 8. We call a hundred years a _______ (世纪). 9. The students of Class Two had a ________ (令人愉快的) trip yesterday. 10. Did you ________ (注意到) that Catherine’s brot her was very nervous? 二. 单项选择 ( )11. —What’s this? —It’s a machine which was invented in _______ century in China. A. six B. sixth C. the six D. the sixth ( )12. _____ is believed that Bell invented the first telephone in 1876. A. This B. That C. It D. One ( )13. —What are these machines used _________? — Making things. A. to B. for C. in D. as ( )14. There used to be many pandas, but only a few of them _________ today. A. remain B. notice C. run D. develop ( )15. The floor is so slippery (滑的) that I __________. A. fall from B. fall behind C. fall into D. fall down ( )16.—What do you think of our plan? —I think i t’s reasonable. But _____ Bob, what we did is a waste of time. A. thanks to B. instead of C. according to D. because of ( )17. They are made ___________ for 14 hours a day. A. work B. to work C. worked D. working ( )18. The number of teachers in our school _____ 60 and a number of them ______ male teachers. A. is; are B. are; is C. are; are D. is; is ( )19. —What kind of potato chips do you like? — I like _______ ones because they are hard, dry and easily broken. A. crispy B. sweet C. soft D. sour ( )20. Mum added lots of _______ on the food but it still wasn’t _______. A. salt; enough salt B. salt; salty enough C. salty; enough salt D. salty; salt enough ( )21.—Y ou look tired. What’s wrong with you? —Last night I did my homework and didn’t go to bed ____ 12:00. A. since B. when C. while D. until ( )22. _____ you can greatly improve you spoken English in a short time. A. In this way B. On the way C. By the way D. In the way ( )23. Nick ____ a job in a bank, but to our surprise, he didn’t take it. A. is offered B. offered C. was offered D. has offered ( )24. —Look at the sign on the right. —Oh, smoking ____ here. A. doesn’t allow B. isn’t allowed C. didn’t allow D. hasn’t allowed ( )25. —I think we can write something about it. —_____. A. Thanks B. Good idea C. What a pity D. Take care 三.完形填空 There was a boy named Ben, who was not doing well in school. Boys in his class laughed at him because he seemed so __36__. His mother __37__ that she would, herself, have to help her son do better in school. She told him to go to the library to read a __38__ a week and write a report about it for her. One day, in Ben's __39__, the teacher held up a rock and asked if anyone knew it. Ben put up his hand and the teacher let him __40___. “Why did Ben raise his hand?” they wondered. He __41__ said anything; what could he possibly want to say? Well, Ben not only __42__ the rock; he said a lot about it. He even knew __43__ the teacher had found it. The teacher and the students were __44__. Ben had learned all this from doing one of his book reports. Ben later went on to the __45__ of his class. When he finished high school, he went to Y ale University and at last became one of the best doctors in the United States. ( )26. A. clever B. hard C. slow D. quick ( )27. A. asked B. decided C. forgot D. heard ( )28. A. notice B. message C. book D. question ( )29. A. class B. room C. office D. lab ( )30. A. think B. leave C. sing D. speak ( )31. A. always B. even C. quickly D. never ( )32. A. found B. played C. knew D. threw ( )33. A. whether B. when C. where D. why ( )34. A. afraid B. surprised C. worried D. unhappy

新目标英语九年级Unit9单元测试卷有答案(人教版)

Unit 9 I like music that I can dance to单元测试卷 时间:60分钟总分:100分 一、单项选择(每小题1分,共15分) 1.Jessica ______ walking ______ jogging. A.prefers;than B.prefers;to C.would rather;than D.would rather;to 2. Wang Zulan is known______ people____the popular program Running Man. A.for; to B.to; to C.to; for D.as; for 3.—What are you doing? —I met many new words when I read a storybook. I am ______ the words in the dictionary. A.looking up B.looking around C.looking like D.looking after 4. —The radio says there will be a rainstorm this weekend, so we have to cancel the hiking to Nanshan. —______ I'm looking forward to it. A.Never mind. B.What a pity! C.My pleasure. D.No problem. 5. Gina along with her parents______ going to France next week. A.is B.are C.was D.were 6.It's dangerous for you to go out for a walk in the forest________at night. A.on business B.by the way C.on your own D.out of the way 7.Now more and more people are paying attention to protecting the environment. So we believe______ there will be less pollution in the future. A.loudly B.lovely C.strongly D.carefully 8. You're supposed ______ up your room before you go out. A.to clean B.clean C.cleaning D.be cleaned 9. I am sure Cindy will be able to find the hotel—she has a pretty good ______ of direction. A.idea B.feeling C.experience D.sense

人教版数学九年级上册第二十四章圆 测试题附答案

第二十四章检测卷 时间:120分钟 满分:120分 班级:__________ 姓名:__________ 得分:__________ 一、选择题(每小题3分,共30分) 1.已知⊙O 的半径是4,OP =3,则点P 与⊙O 的位置关系是( ) A .点P 在圆内 B .点P 在圆上 C .点P 在圆外 D .不能确定 2.如图,在⊙O 中,直径CD ⊥弦AB ,则下列结论中正确的是( ) A .AC =AB B .∠C =1 2∠BOD C .∠C =∠B D .∠A =∠BOD 第2题图 第3题图 第5题图 3.如图,AB 是⊙O 的弦,半径OC ⊥AB 于点D ,若⊙O 的半径为5,AB =8,则CD 的长是( ) A .2 B .3 C .4 D .5 4.下列说法正确的是( ) A .平分弦的直径垂直于弦 B .半圆(或直径)所对的圆周角是直角 C .相等的圆心角所对的弧相等 D .若两个圆有公共点,则这两个圆相交 5.如图,已知AC 是⊙O 的直径,点B 在圆周上(不与A ,C 重合),点D 在AC 的延长线上,连接BD 交⊙O 于点E .若∠AOB =3∠ADB ,则( ) A .DE =E B B.2DE =EB C.3DE =DO D .DE =OB 6.已知一块圆心角为300°的扇形铁皮,用它做一个圆锥形的烟囱帽(接缝忽略不计),圆锥的底面圆的直径是80cm ,则这块扇形铁皮的半径是( ) A .24cm B .48cm C .96cm D .192cm 7.一元钱硬币的直径约为24mm ,则用它能完全覆盖住的正六边形的边长最大不能超过( ) A .12mm B .123mm C .6mm D .63mm 8.如图,直线AB ,AD 与⊙O 分别相切于点B ,D ,C 为⊙O 上一点,且∠BCD =140°,则∠A 的度数是( ) A .70° B .105° C .100° D .110°

人教版九年级数学《圆》单元测试题(含答案)

人教版九年级数学《圆》单元测试题题号一二三四五总分得分一、选择题(每题3分,共18分): 1.下列说法中,错误的是( )A.半圆是弧 B.半径相等的圆是等圆 C.过圆心的线段是直径 D.直径是弦 2.如图所示,点 A B C D E O AB=CD BE=DE D=128 、、、、都是上的点, ,,,则B D的度数为( ) A.128° B.126° C.118° D.116° 3.如图,在圆O 中,AE 是直径,半径OC 垂直弦AB 于D ,连接BE ,若AB=27CD=1 ,,则BE 的长为( )A.5 B.6 C.7 D.8 4.如图,AB 是圆O 的直径,弦,30,6CD AB CDB CD ^D=°=,则图中阴影部分的面积为( ) A.4p B.3p C.2p D.p 5.如图,AP 为O 的切线,P 为切点,若20,A D=°C 、D 为圆周上两点,且60PDC D=°则OBC D等于() A.55° B.65° C.70° D.75° 6.在平面直角坐标系中,以点O 为圆心,半径为4的圆与Y 轴交于点B ,点A (8,4)是圆外一点,直线AC 与圆O 相切于点C ,与X 轴交于点D ,则点C 的坐标是() A.(22,22)- B.128(,)55- C.(23,2)- D.1612(,)55 - (第2题)(第3题)(第4题)(第5题)(第6题) 二、填空题(每题3分,共18分): 7.已知圆锥的底面半径为3cm ,高为4cm ,则圆锥的侧面积是 . 8.边长为12cm 的圆内接正三角形的边心距是cm.

9.如图,A 、B 、C 、D 是圆O 上的四个点, .AOB=58BDC=AB BC =若,则度.10.如图,四边形ABCD 内接于O ,若 ABD=62C=122ADB ,,则的度数 是.11.如图,AB 为O 的直径,弦CD AB ^于点E ,已知CD=6EB=1,,则O 的半径是. 12.如图,直线1(0)2 y x a a =- +>与坐标轴交于A 、B 两点,以坐标原点O 为圆心,2为半径的O 与直线AB 相离,则a 的取值范围是. (第9题图)(第10题图)(第11题图)(第12题图) 三、解答题(每题10分,共60分): 13.如图,已知在以点O 为圆心的两个同心圆中,大圆的弦AB 交小圆于点C 、D. (1)求证:AC=BD ; (2)若大圆的半径R=10,小圆的半径r=8,且圆心到直线AB 的距离为6,求AC 的长. 14.如图,已知OA OB OC 、、是O 的三条半径,点C 是 AC 的中点,M N 、分别是OA OB 、的中点.求证:. MC NC =

2018年新人教版九年级Unit9单元精选练习题附答案

新人教版九年级第九单元精选练习题附答案 Unit 9 I like music that I can dance to. 第一课时Section A(1a~2d) 01基础过关 Ⅰ. 根据句意及汉语提示填写单词。 1. ________(猜想) you won a prize. What would you do? 2. If that's the ________(实情),we need more staff. 3. The dress looks beautiful and feels ________(光滑的). 4. What do you usually do in your ________(空闲的) time? 5. There were two world ________(战争) in the 20th century. Ⅱ. 用括号内所给单词的适当形式填空。 6. Feng Xiaogang is one of the best ________(direct) in China. 7. Jack is an ________(Australia) boy and he comes from Sydney. 8. Michael became an ________(electricity) engineer when he was twenty-five years old. 9. The Greens enjoy music that has great ________(lyric). 10. Peter prefers ________(swim) to playing basketball. Ⅲ. 单项选择。 ( ) 11. —Do you often watch Man and Nature on TV? —Sometimes. It's an interesting program,but I ________ Sports News. A. prefer B. want C. know D. review ( ) 12. —What kind of music do you like? —I like music ________ I can dance to. A. because B. when C. who D. that ( ) 13. Mike likes going shopping with his friends in his ________ time. A .busy B. spare C. correct D. lively ( ) 14.—What are you doing tomorrow,Jane? — ________. A. Thank you B. It's right C. I'm going to visit my grandma D. You're welcome ( ) 15. Karen likes music that she can sing ________. A. along and B. along with C. along D. with Ⅳ. 根据汉语意思完成句子,每空一词。 16. 他们正在教室里随着轻音乐起舞。 They are ________ ________ the light music. 17 .既然那样,我拒绝回答你的问题。 ________ ________ ________,I refused to answer your question. 18. 这个图书馆里有不同种类的科学书籍。 There are ________ ________ ________ science books in the library. 19. 这张CD里全是音乐,没有任何唱的。 It's all music in the CD.________ ________ ________ ________.

人教版九年级英语Unit9测试题

安徽省安庆市钱铺初中2014-2015学年 九年级unit9测试题 一、听力(每题1分,共10小题,计10分) (Ⅰ)录音中有五组对话及五个问题, 听一遍后, 选择最佳答案。(5分) 1. A. Thrillers. B. Comedies. C. Documentaries. 2. A. Music. B. Neither music nor sports. C. Either music or art. 3. A. The music is great because she can dance to it. B. This song is very nice. C. Because she can sing along with the music. 4. A. Yes, she does. B. No, she doesn’t. C. No, I don’t. 5. A. Twice. B. Three times. C. Twice or three times a week. (Ⅱ)录音中有一篇短文, 听两遍后, 选择最佳答案。(5分) 6. Where did Mr. and Mrs. Black go yesterday evening? A. The cinema. B. The supermarket. C. The restaurant. 7. How old was their son? A. Two months old. B. Eight months old. C. Ten months old. 8. Who stopped them when they walked in? A. A policeman. B. An office worker. C. A shop assistant. 9. What did they think of the movie? A. Interesting. B. Relaxing. C. Boring. 10. Why did they want to let their son cry? A. To get all their money back. B. To make him see the movie. C. To give him something to eat. 二、单项选择(每题1分,共20小题,计20分) 11. —What are you looking for? —I’m looking for the music CD you lent me yesterday. A. what B. who C. when D. that 12. The woman came to see John yesterday is his aunt. A. who B. whom C. whose D. what 13. I like to listen to music that can make me. A. happy B. relaxing C. boring D. to relax 14. I prefer music that me relaxed. A. make B. makes C. has D. have 15. —What do you Mo Yan’s novels? —I like them very much. A. look at B. like C. think over D. think of 16. —What music do you like? —I like music that I can sing along or dance. A. to; with B. with; with C. to; to D. with; to 17. —Which do you prefer, orange juice or cola? —, thanks. I’d like just a cup of tea. A. Either B. Neither C. Both D. None

初三数学圆测试题和答案及解析

九年级上册圆单元测试 一、选择题(本大题共10小题,每小题3分,共计30分) 1.下列命题:①长度相等的弧是等弧②任意三点确定一个圆③相等的圆心角所对的弦相等④外心在三角形的一条边上的三角形是直角三角形,其中真命题共有( ) A.0个 B.1个 C.2个 D.3个 2.同一平面内两圆的半径是R和r,圆心距是d,若以R、r、d为边长,能围成一个三角形,则这两个圆 的位置关系是( ) A.外离 B.相切 C.相交 D.内含 3.如图,四边形ABCD内接于⊙O,若它的一个外角∠DCE=70°,则∠BOD=( ) A.35° B.70° C.110° D.140° 4.如图,⊙O的直径为10,弦AB的长为8,M是弦AB上的动点,则OM的长的取值范围( ) A.3≤OM≤5 B.4≤OM≤5 C.3<OM<5 D.4<OM<5 5.如图,⊙O的直径AB与弦CD的延长线交于点E,若DE=OB,∠AOC=84°,则∠E等于( ) A.42 ° B.28° C.21° D.20° 6.如图,△ABC内接于⊙O,AD⊥BC于点D,AD=2cm,AB=4cm,AC=3cm,则⊙O的直径是( ) A.2cm B.4cm C.6cm D.8cm 7.如图,圆心角都是90°的扇形OAB与扇形OCD叠放在一起,OA=3,OC=1,分别连结AC、BD,则图

中阴 影部分的面积为( ) A. B. C. D. 8.已知⊙O1与⊙O2外切于点A,⊙O1的半径R=2,⊙O2的半径r=1,若半径为4的⊙C与⊙O1、⊙O2都相 切,则满足条件的⊙C有( ) A.2个 B.4个 C.5个 D.6个 9.设⊙O的半径为2,圆心O到直线的距离OP=m,且m使得关于x的方程有实数 根,则直线与⊙O的位置关系为( ) A.相离或相切 B.相切或相交 C.相离或相交 D.无法确定 10.如图,把直角△ABC的斜边AC放在定直线上,按顺时针的方向在直线上转动两次,使它转到△A2B2C2的位置,设AB=,BC=1,则顶点A运动到点A2的位置时,点A所经过的路线为( ) A. B. C. D. 二、填空题(本大题共5小题,每小4分,共计20分) 11.(山西)某圆柱形网球筒,其底面直径是10cm,长为80cm,将七个这样的网球筒如图所示放置并包 装侧面,则需________________的包装膜(不计接缝,取3). 12.(山西)如图,在“世界杯”足球比赛中,甲带球向对方球门PQ进攻,当他带球冲到A点时,同样乙已经被攻冲到B点.有两种射门方式:第一种是甲直接射门;第二种是甲将球传给乙,由乙射门.仅

人教版九年级数学上册圆单元测试题及答案

九年级数学第二十四章圆测试题(A) 时间:45分钟分数:100分 一、选择题(每小题3分,共33分) 1 .若O O所在平面内一点P到O O上的点的最大距离为10, A . 14 B . 6 C . 14 或6 D. 7 或3 2. 如图24—A —1 , O O的直径为10,圆心O到弦AB的距离 A . 4 B . 6 C . 7 I 3. 已知点O ABC的外心,若/ A=80 A . 40 4. 如图 A . 20° B . 80 24—A — 2, B . C. 160° △ ABC内接于O 最小距离为 OM的长为 4则此圆的半径为( 3,则弦AB 的长是 D . 8 ,则/ BOC的度数为( D. 120° 若/ A=40 °,则/ OBC的度数为( O 图24—A — 4 图24—A — 3 小明同学设计了一个测量圆直径的工具, 垂直,在测直径时,把O点靠在圆周上, A . 12个单位 B . 10个单位 6. 如图 A . 80° 7. 如图 PB于点 A . 5 24—A —4, AB为O O的直径,点 B. 50° C. 40 ° 24—A —5, P 为O O 外一点, 5 .如图24—A —3, 标有刻度的尺子OA、OB在O点钉在一起, 读得刻度OE=8个单位,OF=6个单位,则圆的直径为( D . 15个单位 ,则/ A等于() 并使它们保持 ) PA 、 C、D,若PA=5,则△ PCD的周长为( B . 7 C . 8 D . 10 C . 1个单位 C 在O O 上,若/ B=60 ° D . 30° PB分别切O O于A、B, ) CD切O O于点E,分别交PA、 &若粮仓顶部是圆锥形,且这个圆锥的底面直径为 毡,则这块油毡的面积是() 4m,母线长为3m,为防雨需在粮仓顶部铺上油 A . 6m2 C . 12m22 D . 12二 m 9.如图24—A —6,两个同心圆,大圆的弦AB 点P,且 CD=13 , PC=4,则两圆组成的圆环的面积是( A. 16 n B . 36 n 10 .已知在△ ABC中, 10 A . 3 11.如图 C、D E、 C. 52 n AB=AC=13 , 与小圆相切于点P,大圆的弦CD经过) D. 81 n BC=10,那么△ ABC的内切圆的半径为( 12 B . 5 24—A —7,两个半径都是4cm的圆外切于点C, 一只蚂蚁由点A开始依A、B、 F、C、G A的顺序沿着圆周上的8段长度相等的路径绕行,蚂蚁在这 C. 2 径上不断爬行,直到行走2006 n cm后才停下来, A . D 点 B . E 点 C . F 点D 二、填空题(每小题3分,共30分) 12 .如图24—A —8,在O O中,弦AB等于O 则蚂蚁停的那一个点为( .G点 O的半径,0C丄AB交O O于点C,则 8段路 )

初中英语 人教版九年级全册unit9能力测试卷

人教版九年级全册unit 9能力测试卷 一、单项选择(每题1分,共14分) 1.Look!The girl is singing in the classroom is my sister. A.who B.which C.whom D.whose 2. As a teacher, you should pay attention to the students' progress and ______ them in time. A. recall B. praise C. suppose D. sense 3.Running Man is a very relaxing TV program is hot among the young people. A.what B.which C.who D.whom 4. Taking a walk after supper _______ me feel relaxed. Would you like to join me? A. are making B. makes C. make D. is making 5. Emily is growing fast. She is ______ taller than her mother. A. very B. even C. so D. quite 6. When you're ______, you should listen to music that can make you excited and happy.

A. shy B. afraid C. strict D. down 7. There _______ plenty of dictionaries in the bookstore. You can choose the one you like. A. was B. were C. is D. are 8. _______ you are so weak, why not stay at home and have a rest? A. Since B. So C. Until D. After 9.By the end of the last term, we about 2000 English words. A.will learn B.learn C.are learning D.had learned 10.They are going to have a celebration for their marriage. They for ten years. A.have married B.got married C.have been married D.married 11. This is one of ______ pieces of music that Becky has ever listened to. Every time she listens to it, she can't help crying. A. more moving B. the more moving C. most moving D. the most moving 12. —A new cartoon will be on this weekend. Would you like to go with me?

北师大版九年级数学圆测试题及答案

北师大版九年级数学圆 测试题及答案 Company number:【0089WT-8898YT-W8CCB-BUUT-202108】

九年级数学圆测试题 一、选择题 1.若⊙O 所在平面内一点P 到⊙O 上的点的最大距离为a ,最小距 离为b (a>b ),则此圆的半径为( ) A . 2b a + B .2b a - C .22 b a b a -+或 D .b a b a -+或 2.如图24—A —1,⊙O 的直径为10,圆心O 到弦AB 的距离OM 的长为3,则弦AB 的长是( ) A .4 B .6 C .7 D .8 3.已知点O 为△ABC 的外心,若∠A=80°,则∠BOC 的度数为( ) A .40° B .80° C .160° D .120° 4.如图24—A —2,△ABC 内接于⊙O ,若∠A=40°,则∠OBC 的度数为( ) A .20° B .40° C .50° D .70° 5.如图24—A —3,小明同 学设计了一个 测量圆直径的工具,标有刻度的尺子OA 、OB 在O 点钉在一起,并使它们保持垂直,在测直径时,把O 点靠在圆周上,读得刻度OE=8个 单位,OF=6个单位,则圆的直径为( ) A .12个单位 B .10个单位 C .1个单位 D .15个单位 6.如图24—A —4,AB 为⊙O 的直径,点C 在⊙O 上,若∠B=60°,则∠A 等于( ) 图24—A 图24—A 图24—A —2 图24—A 图24—A

A .80° B .50° C .40° D .30° 7.如图24—A —5,P 为⊙O 外一点,PA 、PB 分别切⊙O 于A 、B ,CD 切⊙O 于点E ,分别交PA 、PB 于点C 、D ,若PA=5,则△PCD 的周长为( ) A .5 B .7 C .8 D .10 8.若粮仓顶部是圆锥形,且这个圆锥的底面直径为4m ,母线长为3m ,为防雨需在粮仓顶部铺上油毡,则这块油毡的面积是( ) A .26m B .26m π C .212m D .212m π 9.如图24—A —6,两个同心圆,大圆的弦AB 与小圆相切于点P ,大圆的弦CD 经过点P ,且CD=13,PC=4,则两圆组成的圆环的 面积是( ) A .16π B .36π C .52π D .81π 10.已知在△ABC 中,AB=AC=13,BC=10,那么△ABC 的内切圆的半径为( ) A . 310 B .5 12 C .2 D .3 11.如图24—A —7,两个半径都是4cm 的圆外切于点C ,一只蚂蚁由点A 开始依A 、B 、C 、D 、 E 、 F 、C 、 G 、A 的顺序沿着圆周上的8段长度相等的路径绕行,蚂蚁在这8段路径上不断爬行,直到行走2006πcm 后才停下来,则蚂蚁停的那一个点为( ) A .D 点 B .E 点 C .F 点 D .G 点 二、填空题 12.如图24—A —8,在⊙O 中,弦AB 等于⊙O 的半径,OC ⊥AB 交⊙O 于点C ,则∠AOC= 。 图24—A 图24—A

相关文档
最新文档