成都七中自主招生考试题

成都七中自主招生考试题
成都七中自主招生考试题

英语

考试时间: 100 分钟 满分: 100 分)

I. 选择题 (20%)

1. Two days isn ' t enough for me to finish the work. I need _____ day.

A. a third

B. the third

C. the other

D. other 2. There are four __ and two ___ at the ___ .

A. Johns, Marys, doctors

B. Johns, Marys, doctor 's

C. John ' s, Mary ' s, doctor

D.'Joshn, Mary, doctor 's

3. I ' m looking forward _____ taking a holiday in Hainan.

--- So am I. It ' s great to be ______ holiday there. A. for, on B. to, at C. to, on D. for, at 4. Read the sentence carefullyand you ' ll see you ' ve ______ a verb in it.

A. lost

B. gone

C. missed

D. left 5. The teacher did what she could __ that child. A. to help

B. helping

C. helped

D. helps

6. The sharks in the sea will _____ people.

A. feed, on

B. feed, to

C. give, to

D. eat, from

9. “ Elevator ” means _________ .

A. light in British English

B. light in American English

C. lift in British English

D. lift in American English

10. He ' s never ridden the horsfeorbee, __ ?

A. is he

B. isn ' t he

C. has he

D. hasn ' t he 11. You ' ll like it if you _____ on the sea. A. are surfing

B. will surf

C. surfed

D. have surfed

12. Do you know _____ ?

A. what he happe ned

B. what the matter is with him

C. what happe ned to him

D. what did he happe ned

13. He asks me _____ to use the computer.

A. drive

B. keep

C. attack

D. protect

7. There ____ a number of a nimals in the zoo.

The number of them _

thousand.

A. is, are

B. are, is

C. is, is

D. are, are 8. The visitors __ ___ lions _ ___ meat.

two

A. why

B. if

C. whether

D. what

14. She _____ f or ten hours at least. It was at nine that she fell asleep last ni ght.

A. slept

B. had slept

C. has slept

D. was sleeping

15. --- What would you like to eat?

---I don ' t mind._______ whatever you ' ve got.

A. Somethi ng

B. Everythi ng

C. An ythi ng

D. Noth ing

16. I ' m sorry you tbidn the secret. I wish you _____ him the secret.

A. didn ' t tell

B. wouldn ' t tell

C. will not tell

D. had not tell

17. --- Do you mind if I smoke here? --- _______ .

A. Pardo n, I do

B. Yes, not at all

C. No, I do mind

D. I ' m sorry, but I do

18. The camel was bli nd ____ the right eye and only ate the grass _____ the left

side.

A.o n;in

B.i n;on

C.i n;at

D.at ;on

19. Korea(朝鲜)is _ Asia. It's _____ t he northeast of Chi na and ____ the

west of Japa n.

A. i n; to; on

B. i n; on; to

C. on; in; to

D. to; on; in

20. A stone hit ____ and he fell dow n on the ground.

A. at Tom's head

B. on Tom's head

C.Tom on the head

D.Tom at the head

II.完型填空30%

A.

In one way of thinking. failure is part of life. In —1 way, failure may be a

way towards success. The “sSpiiye” is often 2 .Robert Bruce , leader of the th

Scots in the 13 cen tury, was hidi ng in a cave from the En glish. He watched a spider —3 a web. The spider tried to reach across a rough 4 in the rock. He tried six times. On the 5 time he made it and went on to make his web. Bruce is said to have been encouraged by this and to have gone on to 6 the English . Edis on , the inven tor of the light bulb, made

7 models that failed before he found the right way to make one. Once he was asked 8 he kept on tryi ng to make a new type of battery whe n he had failed so ofte n, he replied, “ Failure? I 9ave failure. Now I know 50,000 ways it won't 10

So what? First, always think about your failure. What caused 11 ? Were con diti ons right? Were you in top from yourself? What can you cha nge? So things will go 12 n ext time.

Second, is the goal you're trying to reach the right one? Try to do some 13 about what your real goals may be. Think about this question. I do suc“efed in this, where will it get me?" This may help you preve nt failure in things you should n't be doing any way.

The third thing to keep in 14 about failure is that it's a part of life. Learn to

“ live with yourself" eve n though you may have 15 .

1. A. other B. ano ther C. first D. second

2. A. told B. said C. talked D. spoken

3. A. doi ng B. tak ing C. maki ng D. playi ng

4. A. room B. house C. place D. soil

5. A. tenth B. sixth C. eighth D. seve nth

6. A. save B. help C. defeat D. kill

7. A. hundred B. hun dreds C. hun dred of D. hun dreds of

8. A. why B. whe n C. what D. who

9. A. not B. no C. never D. nothing

10. A. do B. make C. took D. work

11. A. one B. it C. that D. this

12. A. high B. large C. right D. bright

13. A. Thinking B. shopp ing C. read ing D. clea ning

B.

A schoolboy ' s life is in preparation for the real battle of life. It is also1 of differe nces and in terests. One of the 2 importa nt parts of a schoolboy to get 3 kno wledge and good min d-tra ining as he can . His 4 bus in ess in school is to lear n. He 5 to read the book he is 6 in the classes. He has to do the homework set to him. Another part that forms a schoolboy's life is the school discipline (纪律).At school there are

7 rules 8 . This strict discipline is very 9

for him when he 10

the society to 11

a liv in g. It teaches him some very n ecessary virtues (美德)

on the road to a 12 life.

School is a place for a schoolboy to learn what the social life is 13

. For in

the classroom and the playgro und, he has to mix with his fellows and not members of his family.

He cannot behave (表现)as he does in his home. He is no Ion ger a spoilt 宠坏 的)child, and his school fellows will not give 14 to his wishes. He soon gets his corners robbed of and lear ns the less on of giv-a nd-take, good mann ers, and thought for 15

.This is also the way when he has to carry himself in society 1. A . full B. fond C. sure D. short 2. A . larger B. greater C. most D. differe nt 3.

A . many as B. little C. as much D. more 4. A . mostly B. mai n C. almost D. partly 5.

A . has B. likes C. requires D. obliges 6. A . lear ned B. studied C. exam ined D. taught 7. A . hard B. strict C. loose D. kind 8. A . kept

B. being kept

C. keep ing

D. to be kept 9. A . useful B. harmful

C. bad

D. pleasa nt

14. A. heart C. ears D. mi nd 15. A. failed.

B. eyes B. succeeded

C. fini shed

D. passed

s life is

10. A. en ters B. leaves C. c omes D. o rga ni zes 11.

A. produce

B. make

C. g et

D. t ake 12.

A. successful

B. rich C .poor D .famous 13.

A. like B .on C. u p D .for 14. A. in

B. u p

C. o ff

D. .out 15.

A. himself B .teachers

C. o thers

D.

his pare nts

III. 阅读理解:20%最后一文2分1题 A 5%

1. The above is a ______ .

A. picture

B. piece of n ews

C. table

D. schedule

2. It gives in formati on to people who are going betwee n Sha nghai and Hong Kong or Beiji ng and Hong Kong __ .

3. There are ___ flights from Shanghai to Hong Kong every week.

A. three

B. four

C. five

D. six

4. There are ___ flights between Hong Kong and Beijing each week.

A. three

B. four

C. five

D. six

5. Suppose,on arriving in Shanghai by Cathy Pacific on Thursday, you' retold to return to Hong Kong by Cathy Pacific Airways at once. Now the most proper way is

A. to wait until Saturday

B. to stay in Shanghai and take the Friday from'Bseifjliingghtto Hong Kong

C. to go to Beijing and take the Friday ' s flight

D. to take the same day ' s flight from Shanghai to Hong Kong

B 5%

Finding enough meat was a problem for primitive (原始的) man and, keeping it for times when it was scarc(e 缺乏的)was just as hard. Three ways were found to keep meat from spoiling (腐烂.) : salting (盐) , drying, and freezing.

People near salty waters salted their meat. At first they probably put dry salt on it, but this kept only the outside. Later they may have pickled (腌) their meat by putting it in salt water.

In hot, dry places, men found that they could eat meat that had dried while it was still on the bones (骨头) .They later learned to cut meat into thin pieces and put it up to dry in the hot air.

Men in cold places found that frozen (结冰的) meat didn't spoil. They could leave their meat outside and eat it when they pleased.

1. Some people learned that could pickle meat by ___ .

A. putting dry salt on it

B. soaking it in salt water

B. cook ing it with salt D. cutt ing it into pieces

2. The people in the deser沙漠)lear ned to dry meat by ___ .

A. putting it up in the hot air

B. leaving the animals where they were killed

C. putting it over their fires

D. leaving the meat on the bones

3. The ways to keep meat from spoili ng depe nded on ____ .

A. how much meat had to be kept

B. where the people lived

C. how long the meat had to be kept

D. Both B and C

4. It seems true that ____ .

A. freez ing was the easiest way to keep meat

B. pickli ng was the best way to keep meat

C. dried meat stayed fresh(新鲜)the Ion gest

D. none of these was a good way to keep meat

5. The best tide for this selection 选段)is ____ .

A. How To Pickle Meat

B. Fin di ng En ough Meat

C. Primitive Man '

D. Man Learns To Preserve 保管)Meat

C. 10%

Advertisements (广告)

1. Look at Advertisement 1.

The Brow ns are look ing for a new house. Mr Brow n wan ts to live in the centre of town near his work. Mrs Brown wants a house with four bedrooms. Their childre n don't care what the house is like as long as只要)the garde n is big eno ugh.

Why did n ' t the Brow ns buy the house in the advertiseme nt

A. It was on the wrong side of tow n.

B. There were n't eno ugh bedrooms.

C. There was no dining room..

D. The garde n was too big.

2. Look at Advertiseme nt 2.

Ann has always wan ted to work in a restaura nt. She thi nks they're excit ing places. It's hard work but she isn't lazy(懒).You have to work on Saturdays and Sun days but you get other days off. It's not very well-paid, but who cares about mon ey?

Why does Ann want to get the job in the restaura nt?

A. It's an easy job.

B. The pay is good and the food is free.

C. She thinks it would be fun.

D. You get l ong holidays.

3. Look at Advertiseme nt 3.

Tom: There's a new football team sta nding in the village, Mum. I'm old eno ugh to play in it. We stop school at half past three, so I'd have plenty of time.

Mum: Well, 1 suppose you could do your homework later. But look, Tom, you have n't read the advertiseme nt carefully. You can't possibly play for this team.

Why can't Tom play for the new football team?

A. He's not old eno ugh.

B. It's in a different village.

C. School stops too late.

D. He has to do his homework.

4. Look at Advertiseme nt 4.

Man: rm look ing for a room to rent (租).It does n't matter how big it is. I don't care what colour the walls are or how old the furnitur(家具)is. I've got to study for my exams, so the house must be quiet.

Girl:There are some advertiseme nts for rooms in the paper. What about this one?

Man: Yes... Yes... that's all right. Oh dear, no, I don't think it would do.

What's wrong with the room in Advertiseme nt 4?

A. It's too small.

B. The walls are the wrong colour.

C. The man likes old furniture better.

D. It's too no isy.

5. Look at Advertiseme nts 5 and

6.

Man: Why don't we rent one of the sea view holiday flats for our holiday, Mary?

They sound just as good as the sea view hotel, and it would be much cheaper.

Mary: There's one big difference between the holiday flats and the hotel. The

hotel would be much less work!

Why would Mary rather stay at the hotel?

A. They would n't have to cook.

B. It's not so expe nsive

C. She would enjoy the beautiful garde ns.

D. It's n earer the sea.

IV■词汇(5%)

(A).根据汉语写单词

1. ______ 挑战)and cha nge always come together.

2. They want to go on a long _______ 旅行)to the west of Chi na.

3. Dumpli ng is the most ______ 传统)food in the Spring Festival.

4. Mr Zhang _______ (毕业)from Beijing University in 198

5.

5. He told us that he en couraged lcis son to take part in the writi ng ____

(B).根据首字母填空

1. Do you ofte n take part in your school a _______ ?

2. Alice is alway too s _______ to talk in public.

3. He used not to like pek ing Opera ,but now he is very f ______ of it .

4. The bus went around to p _______ up stude nts every morni ng.

5. “ WWW mea ns “ W _____ Wide Web”.

V.补全对话10%

Guide:Excuse me. 1 ?

Tourist: Yes. And you are... ?

Guide: —2- Beijing China Travel Service. This is my membership card.__3—? Tourist: OK. Here you are. Guide: Welcome to Beijing. Miss Caroline. I am so glad that the first one I asked is the guest I will receive. Tourist: Thank you, Miss Chen. I am so lucky that I can meet my guide 4 .

Guide; Let me help you with your luggage. Our car is waiting for us just at the

entrance. 5

Tourist: Thank you very much for your excellent service. Guide: With great pleasure.

1. A. Who are you

B. Are you Miss Caroli ne from Los An geles

C. Do you come from Los An geles

D. Are you from Los An geles

2. A. I'm an En glish guide from B. I from

C. I'm a waiter from

D. I'm a waitress from

3. A. Do you have a passport

B. Can you give me your passport

C. Would you please show me your passport

D. Please give me your passport

4. A. as soon as I got off the plane B. at the railway station

C. in the airport

D. on the airport

5. A. Let's go B. Come along

C. Come on

D. The car will lake us right to the hotel

VI.作文15%

下面有三个话题,请你任选一个话题按要求写一篇短文。

(一) 、根据提示写一篇80—100字左右的短文,说明树木对于人类的重要性。

提示:1.树木可以美化环境(beautify the environment),有助于净化空气,有益于身心健康。

2?木材有许多用途,不但可用于建筑,还可用于制造许多其他的东西。例如,我们家中的许多东西都是木制的。

3.我们应广植树和保护树木,严禁乱砍滥伐,以保持生态平衡(the balanee of n ature)。

(二)、请你谈一谈你准备如何保护自然环境,然后写一篇短文,字数在80字左

右,题目自拟,要求语法正确,语句通顺流畅。

(三)、请你给某英语报社或电台写一封信,反映你当地的污染情况,请他们向全社会呼吁共同来保护环境污染这一活动,词数80词以上。

成都七中外地生招生考试英语答案

A.

A.1. D 2. C 3. B 4. D 5. D

B.1.B 2. A 3.B 4. A 5. D

C. 1. B 2. C 3.C 4. D 5. A

IV .词汇:(5%)

A .1.challenge 2.journery (trip) 3.traditional 4.graduated 5.competition

B.1.activities 2.shy 3.fond 4.pick 5.World

V .补全对话:(10%)

1.B 2.A 3.C 4.A 5.D

VI .作文:(15%)

Trees can beautify the environment and help to make the dirty air clean. It also will be good for our health. It can not only be used for building houses and making paper, but also can be used to make many other things. For example, many things in our houses are made of wood. So we must plant more trees and mustn ' t cut down tr We must try to keep the balance of nature.

2017成都七中外地生自主招生考试英语试卷(含答案)

成都七中2017年外地生自主招生考试英语试卷本试卷共两卷,第一卷和第二卷。第一卷的答案请涂在答题卡上, 第二卷的答案请写在答题卡上的规定位置。在试卷上答题无效。试卷总分为100 分, 考试时间为100 分钟。 第一卷(选择题,共80 分) 第一部分:英语知识运用(共两节,满分40 分) 第一节:单项填空(共20 小题;每小题 1 分,满分20 分)从A,B,C,D 四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。 1. After an hour’s work, she looked at ______clean and tidy room with ______satisfaction. A.不填;a B. a; the C. the; 不填 D. the; a 2. —Hi, honey, which one of the i-phones do you want? —______ Either one will do. A. I don’t mind. B. With pleasure. C. No problem. D. Go ahead. 3. Jim is really good at taking notes. He can ______ almost every word the teachers say in class. A. put out B. put down C. put away D. put off 4. Life is like walking in the snow, ______ every step shows. A. because B. when C. although D. unless 5. Kejie, a top Go player, was beaten by AlphaGo in the game which ______ on May 23 in Zhejiang province. A. has been held B. was holding C. was held D. held 6. Donald Trump’s decision of ______ the US out of the Paris Climate Change Agreement has caused a great concern around the world. A. pulled B. pulling C. pull D. to pull 7. The dictionary is ______, missing many new words. A. out of control B. out of reach C. out of sight D. out of date 8. In many ways, the education system in the UK is very different from ______ in China. A. one B. this C. that D. it 9. My friend is honest , warm-hearted and always ready to help. ______, I can depend on him. A. On the other hand B. In short C. By the way D. Or else 10. Someyouths, ______ arewell-educated, choose to starttheir business after college. A. whom B. where C. who D. which 11. ―A ______ of life and death‖ refers to a situation that is very important or serious. A. match B. cause C. tradition D. matter 12. —Jack, let’s go skating this afternoon! —Don’t you think the ice on the lake is too thin tobear your weight? Which of the following has the closest meaning to the underlined word? A. lose B. support C. catch D. become 13. When you board a train, ship, or aircraft, you ______ it in order to travel somewhere.

成都七中2019年自主招生考试数学试题

成都七中2019年自主招生考试 数学 (时间120分钟,满分150分) 一、选择题(每小题只有一个正确答案,每小题5分,共60分) 1. 若22512106413M x xy y x y =-+--+(x ,y 为实数),则M 的值一定是 (A )非负数 (B )负数 (C )正数 (D )零 2. 将一个棱长为m (2m >且m 为正整数)的正方体木块的表面染上红色,然后切成3m 个棱长为1的小正方体,发现只有一个表面染有红色的小正方体的数量是恰好有两个表面染有红色的小正方体的数量的12倍,则m 的值为 (A )16 (B )18 (C )26 (D )32 3. 已知2610070a a -+=以及2710060b b -+=,且1ab 1,则a b 的值为 (A ) 503 (B ) 67 (C ) 100 7 (D ) 76 4. 若a ,2b =a b 的值为 (A )1 2 (B )1 4 (C (D 5. 满足10ab a b +--=的整数对(,)a b 共有 (A )4个 (B )5个 (C )6个 (D )7个 6. 在凸四边形ABCD 中,E 为BC 边的中点,BD 与AE 相交于点O ,且BO =DO ,AO =2EO , 则S △ACD : S △ABD 的值为 (A )2:5 (B )1:3 (C )2:3 (D )1:2 7. 从1到2019连续自然数的平方和22221232019++++的个位数字是 (A )0 (B )1 (C )5 (D )9 8. 已知0x y z ++=,且1110123 x y z ++=+++,则代数式222(1)(2)(3)x y z +++++的值为 (A )3 (B )14 (C )16 (D )36 9. 将一枚六个面编号分别是1,2,3,4,5,6的质地均匀的正方体骰子先后投掷两次,记第一次掷出的点数为a ,第二次掷出的点数为b ,则使关于x ,y 的方程组2 23ax by x y ì+=?í+=?? 只有正数解的概率为

成都七中学校自主招生考试试题

七中实验学校自主招生考试试题 数学试题 注意事项: 1.本试题分第Ⅰ卷和第Ⅱ卷两部分.第Ⅰ卷为选择题36分;第Ⅱ卷为非选择题114分;全卷共150分.考试时间为120分钟. 2.本试卷的选择题答案用2B 铅笔涂在机读卡上,非选择题在卷Ⅱ上作答. 3.. 4.非选择题必须在指定的区域作答,不能超出指定区域或在非指定区域作答,否则答案无效. 卷I (选择题,共36分) 一.选择题:本大题共12个小题,每小题3分,共36分.在每小题给出的四个选项中, 只有一项是符合题目要求的. 1.计算3×(-2) 的结果是( ) A .5 B .-5 C .6 D .-6 2.如图1,在△ABC 中,D 是BC 延长线上一点, ∠B = 40°,∠ACD = 120°,则∠A 等于( ) A .60° B .70° C .80° D .90° 3.下列计算中,正确的是( ) A .020= B . 6 2 3)(a a = C 3=± D .2a a a =+ 4.如图2,在□ABCD 中,AC 平分∠DAB ,AB = 3, 则□ABCD 的周长为( ) A .6 B .9 C .12 D .15 5.把不等式2x -< 4的解集表示在数轴上,正确的是( ) 6.如图3,在5×5正方形网格中,一条圆弧经过A ,B ,C 三点, 那么这条圆弧所在圆的圆心是( ) A .点P B .点M C .点R D .点Q 7.若2 20x x +=,则xy 的值为( ) A .6或0 B .6-或0 C .5或0 D .8-或0 A B C D 图2 A B C D 40° 120° 图1 图3 A B D 2 0 C

2019年成都市成都七中自主招生数学试卷(含解析)

2019年成都市成都七中自主招生考试数学试卷 (考试时间:120分钟满分:150分) 第Ⅰ卷(选择题,共60分) 一、选择题(每小题只有一个正确答案,每小题5分,共60分) 1.若M=5x2﹣12xy+10y2﹣6x﹣4y+13(x、y为实数),则M的值一定是() A.非负数B.负数C.正数D.零 2.将一个棱长为m(m>2且m为正整数)的正方体木块的表面染上红色,然后切成m3个棱长为1的小正方体,发现只有一个表面染有红色的小正方体的数量是恰有两个表面染有红色的小正方体的数量的12倍,则m等于() A.16 B.18 C.26 D.32 3.已知6a2﹣100a+7=0以及7b2﹣100b+6=0,且ab≠1,则的值为() A.B.C.D. 4.若a=,b=2+,则的值为() A.B.C.D. 5.满足|ab|+|a﹣b|﹣1=0的整数对(a,b)共有() A.4个B.5个C.6个D.7个 6.在凸四边形ABCD中,E为BC边的中点,BD与AE相交于点O,且BO=DO,AO=2EO,则S△ACD:S△ABD的值为() A.2:5 B.1:3 C.2:3 D.1:2 7.从1到2019连续自然数的平方和12+22+32+…+20192的个位数字是() A.0 B.1 C.5 D.9 8.已知x+y+z=0,且,则代数式(x+1)2+(y+2)2+(z+3)2的值为() A.3 B.14 C.16 D.36 9.将一枚六个面编号分别为1、2、3、4、5、6的质地均匀的正方体骰子先后投掷两次,记第一次掷出的点数为a,第二次掷出的点数为b,则使关于x、y的方程组,只有正数解的概率为()A.B.C.D. 10.方程3a2﹣8a﹣3b﹣1=0,当a取遍0到5的所有实数值时,则满足方程的整数b的个数是()

成都七中2015年外地生自主招生考试数学试题和答案

成都七中2015年外地生自主招生考试数学试题和答案 一、单项选择题(本大题共10小题,每题6分,共60分) 1、已知等腰△ABC 的面积为1,其中∠A=120°,则△ABC 内切圆的面积为 A. 18 B. 54 C. 9 D. 27 2如图所示,两对角线长分别为4和2的菱形围绕其中心旋转90?,可以围成一个四角星(其各边用实线标注),则该四角星的周长为 A. B. C. D. 3、已知1x =,则4242x x +=+ A.3 B.4 C. 4+ D. 8+ 4、某三棱锥的三视图如右图所示,则该三棱锥的最长棱长为 A. B. C. D.4 5、设x 、y 为实数,则代数式22 245425x xy y x y ++-+-的最小值是 A.-8 B.8 C.0 D.-10 6、已知6x y z w ≤≤≤≤,则方程18x y z w +++=的正整数解的个数为 A.5 B. 6 C.7 D.8 7、定义分子为1且分母为正整数的分数为单位分数,把1分拆成若干个不同的单位分数之和。如:1= 156 113211101901721561421301111216121++++++++++++n m ,其中m n ≤。设1x m ≤≤,1y n ≤≤,则21 x y x +++的最小值为 A. 232 B. 52 C. 87 D. 343 8、若一个两位数平方的末两位恰好等于其本身,则这样的两位数有( )个 A.2 B.3 C.4 D.5 9、设p 、q 为不相等的正整数,且关于x 的方程20x px q -+=和20x qx p -+=的根都是正整数,则p q -= A.1 B.2 C.3 D.4 10、在正方形ABCD 所在平面上的直线l 满足下列条件:正方形ABCD 的四个顶点到直线l 的距离只取两个值,其中的一个值是另一个值的3倍,这样的直线l 的条数为 A.4 B.8 C.12 D.16

成都七中自主招生考试题

英语 (考试时间:100分钟满分:100分) I. 选择题(20%) 1. Two days isn’t enough for me to finish the work. I need____day. A. a third B. the third C. the other D. other 2. There are four____and two____at the____. A. Johns, Marys, doctors B. Johns, Marys, doctor’s C. John’s, Mary’s, doctor’s D. John, Mary, doctor’s 3. ----I’m looking forward____taking a holiday in Hainan. ----So am I. It’s great to be____holiday there. A. for, on B. to, at C. to, on D. for, at 4. Read the sentence carefully and you’ll see you’ve____a verb in it. A. lost B. gone C. missed D. left 5. The teacher did what she could____that child. A. to help B. helping C. helped D. helps 6. The sharks in the sea will ______ people. A. drive B. keep C. attack D. protect 7. There ____ a number of animals in the zoo. The number of them ____ two thousand. A. is, are B. are, is C. is, is D. are, are

2019成都七中外地生高中部自主招生数学试题-含答案

注意事项: 1.答卷前,考生务必将自己的姓名、准考证号填写在答题卡上; 2.回答选择题时,选出每小题答案后,用2B 铅笔把答题卡上对应题目的答案标号涂黑;如需改动,用橡皮擦擦干净后,再选涂其它答案标号. 答非选择题时,将答案写在答题卡上,写在本试卷上无效. 3.考试结束后,将本试卷和答题卡一并交回. 一、选择题(每小题只有一个正确答案,每小题5分,共60分) 1.若M x xy y x y =-+--+2 2 512106413(、x y 为实数),则M 的值一定为( ▲ ) A .非负数 B .负数 C .正数 D .零 【答案】A 【解析】配方:M =(2x -3y )2+(x -3)2+(y -2)2≥0,当x =3,y =2取等. 2.将一个棱长为m (m >2且m 为正整数)的正方体木块的表面染上红色,然后切成m 3 个棱长为1的小正方体,发现只有一个表面染有红色的小正方体的数量是恰有两个表面染有红色的小正方体的数量的12倍,则m 等于( ▲ ) A .16 B .18 C .26 D .32 【答案】C 【解析】由已知可得6(m -2)2=12×12(m -2),∴m =26. 3.已知a a b b -+=-+=2 2 610070,710060,且ab ≠1,则 a b 的值为( ▲ ) A .503 B .67 C .1007 D . 76 【答案】D 【解析】显然由方程7b 2 -100b +6=0,可得???? ? ?-+=????b b 610070112 , ∴a ,b 1 是方程6x 2-100x +7=0的两根,∴ =b a 6 7. (时间120分钟,满分150分) 成都七中2019年外地生自主招生考试数学

2019年四川省成都七中自主招生数学试卷(含答案解析)

2019年四川省成都七中自主招生数学试卷 副标题 一、选择题(本大题共12小题,共60.0分) 1. 若M =5x 2?12xy +10y 2?6x ?4y +13(x 、y 为实数),则M 的值一定是( ) A. 非负数 B. 负数 C. 正数 D. 零 2. 将一个棱长为m(m >2且m 为正整数)的正方体木块的表面染上红色,然后切成m 3 个棱长为1的小正方体,发现只有一个表面染有红色的小正方体的数量是恰有两个表面染有红色的小正方体的数量的12倍,则m 等于( ) A. 16 B. 18 C. 26 D. 32 3. 已知6a 2?100a +7=0以及7b 2?100b +6=0,且ab ≠1,则a b 的值为( ) A. 50 3 B. 6 7 C. 1007 D. 7 6 4. 若a = √3 √2+√3+√5 ,b =2+√6?√10,则a b 的值为( ) A. 1 2 B. 1 4 2+3 6+10 5. 满足|ab|+|a ?b|?1=0的整数对(a,b)共有( ) A. 4个 B. 5个 C. 6个 D. 7个 6. 在凸四边形ABCD 中,E 为BC 边的中点,BD 与AE 相交于点O ,且BO =DO , AO =2EO ,则S △ACD :S △ABD 的值为( ) A. 2:5 B. 1:3 C. 2:3 D. 1:2 7. 从1到2019连续自然数的平方和12+22+32+?+20192的个位数字是( ) A. 0 B. 1 C. 5 D. 9 8. 已知x +y +z =0,且1 x+1+1 y+2+1 z+3=0,则代数式(x +1)2+(y +2)2+(z +3)2的值为( ) A. 3 B. 14 C. 16 D. 36 9. 将一枚六个面编号分别为1、2、3、4、5、6的质地均匀的正方体骰子先后投掷两 次,记第一次掷出的点数为a ,第二次掷出的点数为b ,则使关于x 、y 的方程组 {ax +by =22x +y =3 ,只有正数解的概率为( ) A. 1 12 B. 1 6 C. 5 18 D. 13 36 10. 方程3a 2?8a ?3b ?1=0,当a 取遍0到5的所有实数值时,则满足方程的整数 b 的个数是( ) A. 12个 B. 13个 C. 14个 D. 15个 11. 若一个三角形的三边和为40,且各边长均为整数,则符合条件的三角形的个数为 ( ) A. 31个 B. 32个 C. 33个 D. 34个 12. 若关于x 的方程x 2+ax +b ?3=0有实根,则a 2+(b ?4)2的最小值为( ) A. 0 B. 1 C. 4 D. 9

成都七中学校自主招生考试试题

成都七中实验学校自主招生考试试题 数学试题 注意事项: 1.本试题分第Ⅰ卷和第Ⅱ卷两部分.第Ⅰ卷为选择题36分;第Ⅱ卷为非选择题114分;全卷共150分.考试时间为120分钟. 2.本试卷的选择题答案用2B 铅笔涂在机读卡上,非选择题在卷Ⅱ上作答. 3.. 4.非选择题必须在指定的区域内作答,不能超出指定区域或在非指定区域作答,否则答案无效. 卷I (选择题,共36分) 一.选择题:本大题共12个小题,每小题3分,共36分.在每小题给出的四个选项中, 只有一项是符合题目要求的. 1.计算3×(-2) 的结果是( ) A .5 B .-5 C .6 D .-6 2.如图1,在△ABC 中,D 是BC 延长线上一点, ∠B = 40°,∠ACD = 120°,则∠A 等于( ) A .60° B .70° C .80° D .90° 3.下列计算中,正确的是( ) A .020= B . 6 2 3)(a a = C 3=± D .2a a a =+ 4.如图2,在□ABCD 中,AC 平分∠DAB ,AB = 3, 则□ABCD 的周长为( ) A .6 B .9 C .12 D .15 5.把不等式2x -< 4的解集表示在数轴上,正确的是( ) 6.如图3,在5×5正方形网格中,一条圆弧经过A ,B ,C 三点, 那么这条圆弧所在圆的圆心是( ) A .点P B .点M C .点R D .点Q 7 .若2 20x x +=,则xy 的值为( ) A .6或0 B .6-或0 C .5或0 D .8-或0 A B C D 图2 A B C D 40° 120° 图1 图3 A B D C

2019年四川省成都七中自主招生物理试卷及答案解析

2019年四川省成都七中自主招生物理试卷 一、单选题(本大题共11小题,共38.0分) 1.以下说法中正确的是() A. 初中物理课本的宽度大约28cm B. 刚参加了中考的小明体积约55dd3 C. 小明从一楼走到三楼教室克服自身重力大约做了1500J的功 D. 高空中飞机飞行的速度大约25d/d 2.下列关于物态变化的说法中,正确的是() A. 春天,河里冰雪消融,是升华现象 B. 夏天,冰棍儿周围冒“白气”,是汽化现象 C. 秋天,早晨花草上出现的小露珠是熔化现象 D. 冬天,温暖的车内窗玻璃会变模糊,是因为车内水蒸气液化 的缘故 3.如图所示,容器中盛满水,水中放入P和Q两个小球,P球为铁 球,Q球为木球,它们用细线分别系于容器的上、下底部,当容 器静止时,细线均伸直处于竖直方向,现使容器以一定加速度向 右匀加速运动,则此时P、Q两球相对容器() 》 A. 两球均向右偏移 B. 两球均向左偏移 C. P球向右偏移 D. Q球向右偏移 4.某人站在离湖岸边8m的C处,刚好能看见湖对岸的一棵 树HG在水中的完整的像,如果眼距地面的高度为d.6d, 湖两岸均高出湖水面lm。湖宽50m,则该树HG的高度为 () A. 10m B. 9m C. 8m D. 7m 5.小球从高处下落到竖直放置的轻弹簧上(如图甲),小球的速度v和弹簧缩短的长度 △d之间的关系如图乙所示,其中A为曲线的最高点。已知该小球重为2.2d,弹簧在受到撞击至压缩到最短的过程中始终发生弹性形变,弹簧的弹力大小与形变成正比。下列说法正确的是()

A. 从撞击轻弹簧到它被压缩至最短的过程中,小球的重力做功的功率先减小后增 大 B. 从撞击轻弹簧到它被压缩到最短的过程中,小球的机械能先增大后减小 C. 当小球的速度为5.dd/d时,小球受到的合力为2.2d D. 从撞击轻弹簧到弹簧被压缩至最短的时候,小球受到的合力为11.22d 6.在图所示的电路中,当滑动变阻器R的滑片P从B向A 滑动的过程中,电压表d1、d2示数的变化量的值分别 为△d1、△d2,则它们的大小相比较应该是() A. △d1<△d2 B. △d1>△d2 C. △d1=△d2 D. 因为无具体数据,故无法比较 7.如图所示,有一重力不计的方形容器,被水平力F压在竖直的墙 面上处于静止状态,现缓慢地向容器内注水,直到将容器刚好盛 满为止,在此过程中容器始终保持静止,则下列说法中正确的是 () 8. 9. & A. 容器受到的摩擦力不变 B. 容器受到的摩擦力逐渐增大 C. 水平力F一定不变 D. 水平力F必须逐渐增大 10.小明在用可变焦的光学照相机(一种镜头焦距大小可根据需要发生改变的光学照相 机)给小兰拍了一张半身照之后,保持相机和小兰的位置不变,又给小兰拍了一张全身照。关于这个过程对相机的调节,下列说法中正确的是() A. 焦距变大,像距也变大 B. 焦距变小,像距变大 C. 焦距变小,像距也变小 D. 焦距变大,像距变小 11.在水平桌面上放有一薄壁柱形容器,底面积为100dd2,将一个重力为2.5d,底面 积为40dd2,高为10cm柱形玻璃杯A漂浮于水面,底部连接有一个实心金属块B,B的密度为2×103dd/d3,细线未拉直,最后A、B两物体在水中处于静止状态(d

2019年四川省成都七中自主招生数学试卷

2019年四川省成都七中自主招生数学试卷 一、选择题(每小题只有一个正确答案,每小题5分,共60分) 1.(5分)若M=5x2﹣12xy+10y2﹣6x﹣4y+13(x、y为实数),则M的值一定是()A.非负数B.负数C.正数D.零 2.(5分)将一个棱长为m(m>2且m为正整数)的正方体木块的表面染上红色,然后切成m3个棱长为1的小正方体,发现只有一个表面染有红色的小正方体的数量是恰有两个表面染有红色的小正方体的数量的12倍,则m等于() A.16B.18C.26D.32 3.(5分)已知6a2﹣100a+7=0以及7b2﹣100b+6=0,且ab≠1,则的值为()A.B.C.D. 4.(5分)若a=,b=2+,则的值为() A.B.C.D. 5.(5分)满足|ab|+|a﹣b|﹣1=0的整数对(a,b)共有() A.4个B.5个C.6个D.7个 6.(5分)在凸四边形ABCD中,E为BC边的中点,BD与AE相交于点O,且BO=DO,AO=2EO,则S :S△ABD的值为() △ACD A.2:5B.1:3C.2:3D.1:2 7.(5分)从1到2019连续自然数的平方和12+22+32+…+20192的个位数字是()A.0B.1C.5D.9 8.(5分)已知x+y+z=0,且,则代数式(x+1)2+(y+2)2+(z+3)2的值为()A.3B.14C.16D.36 9.(5分)将一枚六个面编号分别为1、2、3、4、5、6的质地均匀的正方体骰子先后投掷两次,记第一次掷出的点数为a,第二次掷出的点数为b,则使关于x、y的方程组,只有正数解的概率为()A.B.C.D. 10.(5分)方程3a2﹣8a﹣3b﹣1=0,当a取遍0到5的所有实数值时,则满足方程的整数b的个数是()A.12个B.13个C.14个D.15个 11.(5分)若一个三角形的三边和为40,且各边长均为整数,则符合条件的三角形的个数为()

四川省成都七中2018年自主招生英语试卷

2018年成都七中外地生招生考试 英语试卷 (选择题,共40题,满分70分) 第一部分阅读理解(共两节,满分30分) 第一节(共15小题,每小题2分,满分30分) 阅读下列短文,从每题所给的四个选项A,B,C,D中,选出最佳选项,并在答题卡和相应的位置上将该项涂黑。 A Welcome to one of the largest collections of footwear in the world that will make you green with envy. Here at the Footwear Museum you can see exhibits from all over the world. You can find out about shoes worn by everyone from the Ancient Egyptians to pop stars. 1 A. Room 1 B. Room 2 C. Room 3 D. The Footwear Library 2.All exhibits in each room . A. belong to the same social class B. have the same shape C. are made of the same material D. share the same theme 3.Which of the following is true according to the next? A. Room 2 is the most visited place in the museum. B. Researchers come to the Footwear Library for data. C. The oldest exhibits in Room 1 were made in the 1950s. D. Room 3 has a richer variety of exhibits than the other two. B T oday?s young people in their twenties-or “20-somethings”, are often called “millennials(千禧一代)”. Theygrew up around the time of the millennium in the year 2000. Like other generation, millennials share some things in common. Millennials are staying in school longer and getting married later. Some millennials lack full-time jobs, and many are living at home or getting financial help from their parents. A re these adults? The law says yes. In the United States and many other countries, 18 is the “age of majority”. This means people are considered old enough to be held legally responsible for their actions. But societies usually have their own definitions of adulthood, their own expectations for what being an adult means. S ome researchers say today?s 20-somethings are having a “delayed adulthood”. In othe r words, they are still like teenagers, more mature than adolescents but not quite full adults. Cherrssa Jessen, who is 27, might agree. She grew up in New Jersey, not far from New York City. She says she

2019年四川省成都七中自主招生考试数学试卷(含详细解析)

自主招生考试数学试卷 一、选择题(共10小题,每小题6分,满分60分) 1.(6分)有一个角为60°的菱形,边长为2,其内切圆面积为()A.B.C.D. 2.(6分)若方程组的解为(a,b,c),则a+b+c=() A.1 B.0 C.﹣1 D.2 3.(6分)圆O1与圆O2半径分别为4和1,圆心距为2,作圆O2的切线,被圆O1所截得的最短弦长为() A.﹣1 B.8 C.2D.2 4.(6分)如下图,梯形ABCD中,AD∥BC,AC与BD交于O,记△AOD、△ABO、△BOC的面积分别为S1、S2、S3,则S1+S3与2S2的大小关系为() A.无法确定B.S1+S3<2S2C.S1+S3=2S2D.S1+S3>2S2 5.(6分)关于x的分式方程2k﹣4+仅有一个实数根,则实数k的取值共有() A.1个B.2个C.3个D.4个 6.(6分)两本不同的语文书、两本不同的数学书和一本英语书排放在书架上,若同类书不相邻,英语书不放在最左边,则排法的种数为() A.32 B.36 C.40 D.44 7.(6分)若a=,则的值的整数部分为()A.1 B.2 C.3 D.4

8.(6分)在圆内接四边形ABCD中,∠BAD、∠ADC的角平分线交于点E,过E作直线MN平行于BC,与AB、CD交于M、N,则总有MN=() A.BM+DN B.AM+CN C.BM+CN D.AM+DN 9.(6分)由若干个边长为1的小正方形组成一个空间几何体(小正方形可以悬空),其三视图如图,则这样的小正方体至少应有() A.8个B.10个C.12个D.14个 10.(6分)正方体ABCD的边长为1,点E在边AB上,BE=,BF=,动点P从E出发沿直线向F运动,每当碰到正方形的边时反弹,反弹时反射角等于入射角,而当碰到正方形顶点时沿入射路径反弹,当点P第一次返回E时,P所经过的路程为() A.B.C.2D. 二、填空题(共8小题,每小题6分,满分48分) 11.(6分)对任意实数k,直线y=kx+(2k+1)恒过一定点,该定点的坐标是.12.(6分)如图,圆锥母线长为2,底面半径为,∠AOB=135°,经圆锥的侧面从A到B的最短距离为.

2018年成都七中自主招生考试化学卷

成都七中2018年高中自主招生化学真卷(一) (满分:100分时间 :90分钟) 可能用到的相对原子质量:H-1 C-12 O-16 Na—23 Cl-35.5 Ca-40 K-39 Ba—137 S-32 第I卷(选择题共57分) 一、选择题(本题包括19小题,每小题3分,共57分。每小题只有一个选项符合题意。) 1.自第十一届奥运会以来,开幕式都要举行隆重的火炬接力仪式。火炬的可燃物是丁烷(化学式为C4H10) ,它燃烧时,火苗高且亮,即使在白天,二百米以外也能清晰可见。下列关于丁烷的叙述不正确的是() A.丁烷由碳、氢两种元素组成 B.丁烷由4个碳原子和10个氢原子构成 C.丁烷中碳、氢元素的质量比是24:5 D.丁烷分子由碳原子和氢原子构成 2.物质不需要通过化学变化就能体现的性质是 A.可燃性 B.不稳定性 C.挥发性 D.还原性 3.下列物质属于纯净物的是() A.医用酒精 B.干冰 C清新空气 D.加碘食盐 4.水蒸气通过炽热的炭层时,发生的反应为,该反应属于() A.化合反应 B.置换反应 C.分解反应 D.复分解反应 5.“毒胶囊”泛指利用由工业皮革废料为原料生产的含重金属铬(Cr)超标的胶囊,其中含有可能引起人体肾伤害的+6价的铬。下列铬的化合物中铬呈+6价的是() A. Cr2(SO4)3 B. Cr2O3 C. K2CrO4

D. CrCl2 . 6.下列实验操作正确的是 () A.倾倒液体 B.称量固体 C.装入固体粉末 D.熄灭酒精灯 7.能将氯化钙、盐酸及氢氧化钾三种溶液鉴别出来的试剂是() A.氯化钠溶液 B.苛性钠溶液 C.硝酸银溶液 D.碳酸钠溶液 8.最近推出了一种廉价环保的新能源----------甲醚,它完全燃烧时发生如下反应: ,则X(甲醚)的化学式是() A. C3H6O2 B. C2H6O C. C2H4O . D. CH4O 9.厨房中的物质放人足量的水中,充分搅拌,不能形成溶液的是() A.食用油 B.白醋 C.白糖. D.食盐 10.某校实验室将药品分类后放在不同的药品柜里,已存放的部分药品如下: 药品柜编号①②③④……. 药品氢氧化钠 氢氧化钙盐酸 硫酸 二氧化锰 氧化铜 氯化钠 硫酸钠 ……..

成都七中2017年外地生招生考试题解析(标准)

成都七中外地生招生考试数学试题 考试时间:120分钟 满分:150分 一、填空题(1-6题每题5分,7-12题每题7分,13-18题每题8分,共120分) 1、若0732 =-+-b a ,则b a += . 难度:★ 原理:“非负数和为零,则各加数均为零” 答案:73± 2、设b a ≠,且43322=+=+b b a a ,则b a ab 2 2+= . 难度:★★ 原理:一元二次方程根与系数的关系 解析:由题意,b a 、为方程0432 =-+x x 的两相异实根,则.43-=-=+ab b a , 进而得.12)3()4()(22=-?-=+=+a b ab b a ab 3、如图,在长方体1111D C B A ABCD -中,已知4=AB , ,3=AD 21=AA ,则三棱锥DB A C 11的体积为 . 难度:★★★ 原理:棱锥的体积公式Sh V 3 1 = 方法:间接法 解析:观察图可得,三棱锥DB A C 11的体积为长方体1111D C B A ABCD -的体积减去4个三棱锥ABD A 1的体积.即8)2342 1 31(4234=???? ?-?? 4、将一质地均匀的正方体骰子掷一次,观察向上一面的点数,与点数4相差2的概率是 .难度:★ 原理:机会均等事件发生的概率 答案: 3 1 5、抛物线2 2 4,2bx y ax y -=-=与坐标轴恰好有4个交点,这4个交点组成的筝形面积为12,则b a += . 难度:★★ 原理:抛物线的轴对称性及筝形面积公式 解析:由题意作图.根据筝形面积为12,可得两抛物线 与横轴交点为(-2,0)和(2,0).联立两抛物线解析式得 2242bx ax -=-,即6)(2=+x b a .故.2 3 =+b a 6、设251-= x ,则33 1x x -= . 难度:★★ 原理:解析:由251-= x 得2511+-=x ,则125 12511=++-= -x x 故243)1()11)(1(12 2233 ==+-=++-=-x x x x x x x x D 1 C 1 A B A 1 B 1 D C

成都七中2015年外地生自主招生考试数学试题和详细解析

2015年成都七中外地生自主招生考试数学试题及解析 一、选择题(6×10=60分) 1. 已知等腰△ABC 的面积为1,∠A=120,则△ABC 内切圆的面积为( ) A. 3 18π B. 3 54π C. 3 9π D. 3 27π 解:过A 作底边的垂线,垂足为D ,连接圆心O 与AB 边的切点E ,连接BO 设圆半径为r Rt △ABD 中,∠B=30°,S △ ABD =(1/2)AD.BD =(1/2)AD. 3A D=1/2,∴AD 2 =1/ 3 在Rt △AEO 中,∠EAO=60°,∴sin60°=EO/AO= 3/2,即 r/(AD-r)= 3/2,∴r= 3AD /(2+ 3) ∴S ○O =πr 2 = 3π7+4 3 = (7?4 3) 3π49?16×3 = 7 3?12 π 此题四个选项都不正确。 2. 如图所示,两条对角线长为4和2的菱形绕中心旋转90°,可围成一个四角形(各边用实线标注),则该四角形的周长是____。 解:作如图所示的辅助线(红色) ∵对角线长为2倍关系,∴E 、F 分别为AD 、BD 的中点, ∴EF 为△ABD 的中位线,∴EF=AB/2,△EFC ∽△BAC,∴FC=AC/2 在Rt △ADF 中,(AC+CF)2=AD 2+DF 2,即(AC+AC/2)2=22+12 解得AC = 2 53 ,∴周长=8AC= 16 53 3.已知x = 3+1,x 4+4 x 2+2x +2 = 解:∵x = 3+1 ∴x 2=2x +2 ∴x 2+2x +2=2x 2 x 4+4=x 22 +4=(2x +2)2+4=4 x 2+2x +2 =4 x 2+x 2 =8x 2 ∴原式= 8x 2 2x 2 =4 4、某三棱锥的三视图如右图所示,则该三棱锥的最长棱长为 此题看不清原图,加之本人也未能完全参透,故未做。 5. 设x,y 为实数,则代数式2x 2+4xy+5y 2 -4x+2y-5的最小值是____ 解:原式=2x 2+4xy+5y 2-4x+2y-5=x 2+4xy+4y 2+x 2-4x+y 2 +2y-5 =(x+2y)2+ x 2-4x+4+y 2+2y+1-5-4-1=(x+2y)2+(x-2)2+(y+1)2 -10, 恰好有解x=2,y=-1使得前三项都取得最小值0,故最小值为-10

成都七中近几年数学自主招生试卷

成都七中2012年自主招生数学试题 (时间120分钟,满分150分) 一、选择题(每题6分,共60分) 1、设是21,x x 方程0132 =+-x x 的两根,则=+ 21x x ( ) A 、3 B 、5 C 、3 D 、5 2、一次函数1-+=k kx y 的图象与反比例函数x y 1 = 的图象交点个数为( ) A 、0 B 、1 C 、2 D 、1或2 3、某三角形面积为2 6cm ,周长为cm 12,其内切圆半径为( ) A 、0.5cm B 、1cm C 、1.5cm D 、2cm 4、计算=-+???2 2012 12014201320122011( ) A 、2011 B 、2012 C 、2013 D 、2014 5、平面上有无数条彼此相距3cm 的平行线,将半径为1cm 的硬币掷在平面上,硬币与平行线相交的概率为( ) A 、 41 B 、31 C 、32 D 、4 3 6、某三棱锥的主视图和左视图如右,则其俯视图不可能是( ) A 、 B 、 C 、 D 、 7、从3,2,1,0,2-五个数中选出两个数,则b x a y +=2 表示不同函数的种数为( ) A 、15 B 、14 C 、13 D 、12 8、设n 为正整数,记()2321!≥????=n n n ,1!1=,则=+++++! 109 !98!43!32!21 ( ) A 、!1011- B 、!1011+ C 、!911- D 、! 91 1+ 9、如图,O 为矩形ABCD )(BC AB <的中心,过O 且互相垂直的两条直线被矩形四边怕截,设截得的线段EF 和GH 长度分别为y x ,,四边形EGFH 的面积为S ,当这两条直线保持垂直且围绕O 点不停旋转时,下列说法正确的是( ) ①某一阶段,y 随x 的增大面增大,y 是x 的正比例函数 主视图 左视图 F D E B A C O G H

成都七中招生考试真题!.doc

成都七中2008年外地生招生考试 数学试题 考试时间120分钟 满分150分 注:请将选择题的正确选项填涂到季度卡上 一、选择题(每小题只有一个正确答案,共10个小题,满分60分) 1、已知三个整数a,b,c 的和为奇数,那么abc c b a 2222+-+ ( ) A 、一定是非零偶数 B 、等于零 C 、一定为奇数 D 、可能是奇数,也可能是偶数。 2、已知3 2c b a 1abc 2 2 2 =++=++=c b a ,,, 则 1 1 1111-++ -++-+b ca a bc c ab 的值是( ) A 、1 B 、2 1- C 、2 D 、3 2- 3、设02=+-q px x 的二实根为βα,,而以2 2 βα,为根的二次方程仍是02 =+-q px x ,则数对 ),(q p 的个数是( ) A 、2 B 、3 C 、4 D 、0 4、设函数54322 2 -----=k k kx x y 的最大值为M ,为使M 最大,k= ( ) A 、-1 B 、1 C 、-3 D 、3 5、若132 =-x x ,则=+--+2008721292 3 4 x x x x ( ) A 、2011 B 、2010 C 、2009 D 、2008 6、已知坐标原点O 和点)-2,A(2,B 是坐标轴上的一点,若AOB ?是等腰三角形,则这样的点B 一共有多少个 ( ) A 、4 B 、5 C 、6 D 、8 7、如图:有六个面积为1的正方形组成的长方形,其中有A 、B 、C 、D 、E 、F 、G 7个点,以这7个点为顶点,并且面积为1的三角形有 ( ) A 、11个 B 、12个 C 、13个 D 、14个 8、锐角ABC ?的三边两两不等,D 是BC 边上的一点,?=∠+∠90C BAD , 则AD 一定过ABC ?的 ( ) A 、垂心 B 、内心 C 、外心 D 、重心 9、有纯农药一桶,倒出20L 后用水补满,然后又倒出10L ,再用水补满,这时,桶中纯农药与水的容积之比为3:5,则桶的容积为( ) A 、30 B 、40 C 、50 D 、60 A B C D E F G

相关文档
最新文档