模拟试卷

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模拟试卷范文第1篇

根据题意，从A、B、C、D四个选项中选出最佳答案。

1、“_______arethesethings?”“Thirtyyuan.”

A.Howmuch

B.Howfar

C.Howmany

D.Howlong

2、“_______?”“It’sMarch25th.”

A.What’stimeisit

B.What’stheweatherliketoday

C.Whatdayisittoday

D.What’sthedatetoday

3、Please_______thebagsofrice.We’llholdaparty.

A.wentandmove

B.goandmove

C.wentandmoved

D.wenttomove

4、Mr.Lihaschangedhismind,_______?

A.ishe

B.hashe

C.doesn’the

D.hasn’the

5、—_______willtherainyseasonlast?—Aboutamonth.

A.Howlong

B.Howoften

C.Howsoon

D.Howmuch

6、Let’sgototheNumberOneMachineShop,_______?

A.shallwe

B.willyou

C.canwe

D.don’tyou

7、—_______didyouworkthere?—Twomonths.

A.Howmany

B.Howfar

C.Howlong

D.Howmuch

8、—_______skirtisthatonthechair?—Letmesee.Ohno,it’snotmine.

A.Whose

B.What

C.Who’s

D.Which

9、“Please_______inthereadingroom.”saidMissYang.

A.nottalk

B.nottalking

B.nottotalk

D.don’ttalk

10、Marydid_______inthehighjump.Shejumpedhigherthanlasttermand_______1.30metres.

A.better,got

B.well,reached

C.well,arrived

D.good,gotto

11、_______anicebirditis!

A.What

B.How

C.Very

D.So

12、_______wonderfultheGreatWallis,isn’tit?

A.How

B.Howa

C.What

D.Whata

13、_______goodtimetheyarehaving!

A.What

B.How

C.Whata

D.Howa

14、_______excitednewsitis!

A.Whata

B.What

C.How

D.Howa

15、_______dictionaryyou’vebought!

A.Whatauseful

B.Whatanuseful

C.Howauseful

D.Howanuseful

16、_______heis!

A.Whatatallboy

B.Howtallboy

C.Howtallaboy

D.bothAandCareright

17、_______thewindow,please.

A.Closing

B.Open

C.Opening

D.Toclose

18、Trytotellthestoryinyourownwords._______afraidtomakemistakes.

A.Notbe

B.Don’tbe

C.Nottobe

D.Nottobeing

19、_______sosure!We’llbeatyourteam.

A.Don’t

B.Don’tbe

C.Notbe

D.Notto

20、Pleasehandthejackettome,_______?

A.shallyou

B.don’the

C.willyou

D.aren’tyou

21、Whatafoolishman,_______?

A.isn’tit

B.isn’the

C.doesn’the

D.ishe

22、Besuretowritetous,_______?

A.willyou

B.aren’tyou

C.canyou

D.mustn’tyou

23、_______shedancesandsings!

A.Howgood

B.Whatwell

C.Howwell

D.Whatgood

24、_______goodnewshegaveus!

A.How

B.Whata

C.What

D.Howa

25、Theweathergetscoolinautumn,_______?

A.doesn’tit

B.doesit

C.isit

D.isn’tit

26、_______itinEnglish,please.

A.Answer

B.Toanswer

C.Answering

D.Notanswer

27、Letme_______.

A.trying

B.totry

C.try

D.trynot

28、Whatagoodidea,isn’t_______?

A.he

B.she

C.it

D.they

29、_______theroom!

A.Don’tgointo

B.Don’tgoingto

C.Nottogoin

D.Notgointo

30、Classisover._______arest.

A.Pleaseyouhave

B.Haveyou

C.Have

D.Doyouhave

31、Doyouknow_______amomentago?

A.hesaidwhat

B.whathesaid

C.whatsaidhe

D.whatdidhesay

32、Idon’tthink_______I_______outtheproblem.

A.if,canwork

B.how,willwork

C.that,canwork

D.when,willwork

33、Couldyoutellmeifit_______tomorrow?

A.rain

B.willrain

C.raining

D.rains

34、Wearesure_______he_______tospeakEnglishwell.

A.that,learned

B.that,haslearned

C.if,learned

D.if,haslearned

35、Theboyasked_______I_______anynoisefromoutside.

A.when,heard

B.why,hadheard

C.whether,hadheard

D.what,heard

36、Thechildrensaid_______they_______themselvesverymuch.

A.if,enjoy

B.why,enjoyed

C.what,enjoy

D.that,enjoyed

37、Alicewantedtoknow_______hermotherlikedthedog.

A.that

B.if

C.which

D.what

38、Sheisafraid_______he_______coldatnight.

A.that,willcatch

B.that,catches

C.whether,willcatch

D.if,catches

39、Idon’tknowwhenhe_______.Whenhe_______,I’llletyouknow.

es,comes

B.willcome,comes

C.willcome,willcome

es,willcome

40、Idon’tknow_______.

A.whatisthematterwithhim

B.whatthematteriswithhim

模拟试卷范文第2篇

关键词：模拟试卷；中考方向；考试大纲；试卷结构；科学安排；创新题目

中考物理模拟考试是在中考前，一方面为了摸清学生的学习效果和查漏补缺，另一方面为了让学生提前感知中考题的题型、题量、难度，从而适应中考而进行的一次较正规的考试。考试的重要性决定了必须要有一份高质量的模拟试卷。模拟卷是否科学、准确、客观地反映学生水平，是否反映了当地、当时的中考方向，是否对教师和学生具有一定的指导意义，这些都是在考验教师的专业水平和素养。如何编写一份优秀的中考物理模拟试卷，把握好“尺度”，值得大家广泛关注和思考。

一、审时度势，正确把握中考方向

一份优秀中考物理模拟试卷应灵敏捕捉中考信息、正确把握中考方向，具有前瞻性和指导性。因此，教师首先应理解《国务院关于基础教育改革与发展的决定》、《基础教育课程改革纲要（试行）》、《物理课程标准》、以及《xx市关于国家基础教育课程改革实验工作的实施意见》等国家和地方的教育方针政策。

二、领会大纲，合理安排试题梯度

深入领会考试大纲中所说的“了解”、“理解”等词语含义，合理安排题目的难度和梯度。一份优秀的中考物理模拟试卷，不会都是难题或容易题，科学比例一般是：容易题约占整份试卷的30%，中等题（难度笼统地界定在容易题和难题之间）约占55%，难题约占15。全卷的难度大概为为0.65。另外，选择题、填空题和作图题通常来说是基础性题目，不宜安排过多难题和综合性强的题。难题比例不超过5%。难题放在计算题、实验题、综合题为宜。题目的安排也要注意递度，一般来说，大题由易到难地设置，同一大题有多个问时则将难的一问放于最后。

三、研究结构，科学布局知识面和题型比例

在编写中考物理模拟试卷前，都必须清楚考试范围，然后，理清考试范围内各章节的重、难点。这些可参考《物理课程标准》和考试大纲。出试题时应注意知识的覆盖面和侧重点。像初中物理中考模拟试卷应侧重《力学》和《电学》，其次是《光学》和《热学》，兼顾《声现象》、能量、物质等。如：《2012年佛山市高中阶段学校招生物理科考试说明》中就有明确要求：声、光、热约占28%，运动、力和功约占32%，电和磁约占30%，物质、能量和能源约占10%。

题量和题型分数比例应根据考试时间和难度来合理设置。通常只要严格按照《考试说明》的规定出卷即可。如：《2012年佛山市高中阶段学校招生物理科考试说明》的要求是：选择题8道共24分、填空题7道共21分等，满分100分，考试时间80分钟。

四、精挑细选，紧紧抓住重、难点

一份优秀的中考物理模拟试卷不仅要有好的形式，更重要是有好的题目。选题时应注意以下几点：

1.用心琢磨，做到准确

“用心琢磨，做到准确”这是一份优秀中考物理模拟试卷的最起码要求。因此，在出中考模拟试卷是一定要认真仔细，用心琢磨，做到准确无误。

2.精挑细选，体现热点

在选题时要注意广泛，题目资源要丰富，在“广”的基础上要注意“精”。做到选题典型、体现热点，帮助学生查漏补缺。

3.慎重安排好重点、难点，体现选拔性

一份中考物理模拟试卷中重点、难点的安排能反应一位教师的功力。一般来说，要考查学生水平、体现选拔性，重、难知识点多放在实验题、计算题和综合题，尤其是在综合题的最后一题。从卷面上看，难点也并非只集中在某一题上，常常是分散在几题中，佛山市的中考物理试卷就很明显地体现这样的规律；考察学生观察思维能力、知识的迁移运用能力、语言组织能力的题多放在实验题；而考察学生的思维能力和综合运用能力的题多放在综合题；最后一题综合题往往设有特别难的问题，意在选拔最优秀的人才。

对于实验题、计算题、综合题这些大题，应该基本具备以下几点：（1）要与生活、生产实际密切联系；（2）运用发散性思维能力解决；（3）有多种正确的解答方法；（4）需要较广泛的知识面及一定的知识迁移能力。

4.防“冷”、防“偏”、防“怪”题

一份优秀中考物理模拟试卷，不应该过多出现“冷”题、不能出现“偏”题，更不能出现“怪”题。“冷”题指在教材中不是重点知识，在模拟试卷不宜太多，多了容易本末倒置，误导师生。“偏”题指超出教材或考试大纲的知识。“怪”题指没有什么根据，甚至于该科目没任何关系，让人感到奇怪的题目。这样的题目既不能提高学生能力，又不能达到“查漏补缺”的目的。“偏”题、“怪”题都不能出现在模拟卷中。

五、提倡创新题目，让人眼前一亮，体现个人风格

要是模拟卷所选题目都是人家的，甚至有一些是学生已经做过的，那这样的试卷质量将大打折扣。一份优秀中考物理模拟试卷应该是题目新颖的，最好能做到独一无二，让人眼前一亮，然后爱不释手。提升试卷质量，体现个人风格，这也是我们教师落实科学发展观的具体要求。

总之，一份优秀中考物理模拟试卷应该定位在处理好知识与技能、过程与方法、情感态度与价值观之间的关系；应该定位在提高全体学生的科学素质，注重学生发展；应该提倡多种学习方式，注重科学探究和改变评价方式；应该能较客观地反映学生的德、智水平以及不足。只有我们把握好这些“度”，才能更有效地通过试卷测试来更有效地指导复习工作。

参考文献：

模拟试卷范文第3篇

备战小升初英语模拟试卷：单项选择

1. He asked me _____ I would like a cup of tea.

A. that B. what C. if

2. Be quiet! The babies ________.

A. sleep B. are sleeping C. slept

3. Do you know ______ this word?

A. what to spell B. how to spell C. to spell

4. The students couldn't help ______ when they heard the joke.

A. to laugh B. laugh C. laughing

5. —— What day is today? —— It's ______.

A. Monday B. a fine day C. September 1st

6. If I ____ you tomorrow, I will give you the receipt.

A. see B. will see C. am seeing

7. Is the cat ________ the door? No, it isn’t. It’s ________ the desk.

A. behind, under B. in, on C. under, at D. over, behind

8. I’v got a toothache. I’m going to the__________.

A. park B. dentist C. teacher

9 ——May I _______ your bike? ——Sorry.

A. ride B. reading C. read

10. ——Whose ruler is it? ——Maybe it’s _______.

A. Peter B. Peters C. Mary’s

11. I want to find a good book. I’m going to the _______.

A. cinema B. library C. museum

12. ——_____ will you do? ——I’ll play football.

A. What B. When C. Where

13. —— I don't like milk. —— I don't, _________.

A. too B. neither C. either

模拟试卷范文第4篇

1. A. spring B. summer C. autumn D. weather

2. A. bread B. meat C. apple D. butter

3. A. cupboard B. desk C. window D. chair

4. A. sunny B. rain C. cloudy D. snowy

5. A. the B. near C. behind D. on

二、词汇。(5分)

根据首字母提示写出单词，完成句子。

1. --- Thank you very much! --- With p _______.

2. W__________ comes after Tuesday.

3. What do you have for b__________.

4. This is Peter's e________ life.

5. F________ is the second month of a year.

三、选词填空。(5分)

用at, on, to, like, for, in front of, from填空。

1. What's the weather _________ in Shanghai?

2. A storm is coming _________ South China Sea.

3. Here's the weather report __________ tomorrow.

4. Mr. Smith has many pigs ___________ his farm.

5. Father is cleaning his car ___________ the house.

6. I get up _________ six o'clock in the morning.

7. We are eating dinner _________ the table.

8. It's raining. We can watch TV _______ home.

9. What can I do __________ you?

10. It's five __________ twelve in the morning.

四、用所给单词的适当形式填空。(10分)

1. Linda can swim very fast. She is a good ___________ (swim).

2. It's late. We can't play any _________ (long).

3. Mary is much __________ (good) today.

4. That is a new boy. ___________ (He)name is Jack.

5. ---- Here's your book. --- __________(Thank) a lot.

6. Today is the _______ (nine)of June.

7. I ________(have) a shower at this time yesterday.

8. San was in the _________ (sit) room just now.

9. Lucy writes __________ (carefully) than Lily.

10. My father _________ (read)a newspaper last night.

五、选出与画线部分意义相近的词组或句子。(10分)

1. Excuse me. Where's Shanghai Zoo?

A. How far is B. How can I get to C. Where can I go to

2. Which apple do you want?

A. do you like B. would you want C. would you like

3. You can go to Zhongshan Park on foot.

A. walk to Zhongshan Park

B. go to Zhongshan Park by foot

C. go to Zhongshan Park by walk

4. Rose and Jane are in the same class.

A. classmates B. schoolmates C. deskmates

5. The girl in white is Jane.

A. has a white dress B. with a white dress C. wearing a white dress

6. It's ten five.

A. ten to five B. ten past five C. five past ten

7. Where are you from?

A. are you coming B. do you come from C. do you from

8. --- I'm hungry. Can I eat some bread? --- Certainly.

A. That's great. B. Sure. C. Yes, I can.

9. The boys of our school like to play football.

A. like playing B. to like play C. like play

10. They had a good time at the party last Sunday.

A. had many time B. enjoyed themselves C. had many friends with them

六、选择填空。(12分)

1. My sister can _____ well. She's a good ______.

A. singing; singer B. sing; singer C. sing; singing

2. ______ chase the ducks!

A. Can't B. don't C. Don't

3. ______, the music is nice!

A. Look B. Listen C. Hear

4. What do sheep like?

A. They like corn. B. They like grass. C. It likes grass.

5. - Are you _______? --- Yes, we are.

A. postman B. postmen C. the postman

6. It was ______ egg. Now it is a caterpillar.

A. a B. an C. the

7. ---- Would you like some milk? ---- _______.

A. Yes, I like. B. No, I don't C. No, thanks

8. ---- Excuse me, where's Red Flag School?

A. by B. taking C. take

9. It's late. Let's ______.

A. go to home B. go home C. go to the home

10. ---- Whose desk is this? --- It's _________.

A. Tim's and Jim's B. Tim and Jim's C. Tim and Jim

11. We played ______ at nine o'clock in a music lesson.

A. drum B. drums C. the drum

12. We can't eat _____ drink in class.

A. and B. but C. or

七、根据要求改写句子。(8分)

1. John has lunch at school every day. (对画线部分提问)

___________________________________________________________________

2. Lingling gets up at six o'clock. (现在进行时)

___________________________________________________________________

3. I like the small apple. (否定句)

___________________________________________________________________

4. That tall man is Mr White. (对画线部分提问)

___________________________________________________________________

5. What time do you go to school? (一般过去时)

___________________________________________________________________

6. It's warm in spring and cool in autumn in Shanghai. (对画线部分提问)

___________________________________________________________________

7. I read English every day. (对画线部分提问)

___________________________________________________________________

8. Mr Black can speak very good Chinese. (对画线部分提问)

___________________________________________________________________

八、阅读理解。(15分)

A.阅读短文后做出判断，符合短文意思用"T"表示，不符合用"F"表示。(5分)

What Am I?

I was born (出生)in a small river. When I was young, the river was my home. I did not know my father or mother, but I had many, many brothers and sisters. I swam and played with them.

At that time I did not look like my father or mother. I had no legs, but I had a long tail(尾巴).So I looked like a fish.

Then my tail became shorter and shorter(变得越来越越短). And now I have four legs and a very short tail.

I know I'm going to have no tail at all soon(不久). I'm going to be like my father and mother. Then I'm going to jump out of the water. I'm going to live on the land(陆地)and in the water too. I'm going to eat a lot of insects(昆虫)--- a lot of bad insects.

What an I?

1. The river was my home when I was born.

2. I had no father or mother, but I had many brothers and sisters.

3. I was a fish when I was young.

4. I'm going to look like my father and mother.

5. I'm an insect.

B.根据短文内容，回答问题。(10分)

The Crow (乌鸦)and the Fox

A crow is sitting in a big tree. She has a big piece of meat in her mouth. "My babies will have a nice breakfast," she thinks.

An old fox is looking for (寻找)his breakfast. He sees the crow and the meat. "How can I get that piece of meat?" he thinks.

"Good morning, Mrs Crow," says the fox very sweetly. "How are you?"

But the crow doesn't say a word.

"You are very nice babies, Mrs Crow," says the fox very sweetly. "How are they? May I see them?"

Still(仍然), the crow doesn't say a word.

"You are very beautiful, Mrs Crow. And you have a beautiful voice(声音)too, " says the fox very, very sweetly. "Will you sing a song for me?"

Mrs Crow thinks, "How nice Mr Fox is! I must sing him a song." So she opens her mouth, "Caw! Caw! (乌鸦的叫声)" Down drops (掉下)the meat into the fox's mouth.

Questions:

1. What does the crow have in her mouth?

_____________________________________________________________

2. What is the old fox looking for?

_____________________________________________________________

3. The fox says "Good morning" to the crow. Does the crow say anything?

_____________________________________________________________

4. Why does the crow open her mouth?

_____________________________________________________________

5. Who gets the meat at last(最后)?

______________________________________________________________

九、读短文，用五个英语句子将短文写完。(5分)

Today is Children's Day. It's sunny. The pupils are having an English evening on the playground.答案：

一、

D C A B A

二、

1. pleasure 2. Wednesday 3. breakfast 4 .everyday 5. February

三、

1. like 2. from 3. for 4. on 5. in front of 6. at 7. at 8. at 9. for 10. to

四、

1. swimmer 2. longer 3. better 4. His 5. Thanks

6. ninth 7. had 8. sitting 9. more carefully 10. read

五、

B C A A C C B B A B

六、

B C B B B B C C B B C C

七、

1. What does John do at school every day?

2. Lingling is getting up now.

3. I don't like the small apple.

4. Which man is Mr White?

5. What time did you go to school?

6. What's the weather like in Shanghai?

7. How often do you read English?

8. How can Mr Black speak Chinese?

八、

A: T F F T F

B: 1. A piece of meat. 2. Breakfast. 3. No, she doesn't

模拟试卷范文第5篇

1.如图,如果点A、B、C是数轴上的三个不同的点,分别对应实数a、b、c,那么下列各式中,错误的是()

A.a+b

C.bc

2.二次函数y=-x2-2的图象大致是()

3.下列命题中,假命题的是()

A.平行四边形的对角线互相平分

B.对角线互相平分的四边形是平行四边形

C.矩形的对角线相等

D.对角线相等的四边形是矩形

4.如图,已知ABC的六个元素,则下面甲、乙、丙三个三角形中和ABC全等的是()

A.甲和乙 B.乙与丙 C.只有乙 D.只有丙

5.甲、乙两人各随意掷一枚骰子,如果所得的点数之积为奇数,那么甲得1分,如果所得点数之积为偶数,那么乙得1分.若接连掷100次,谁的得分总和高谁就获胜,则获胜可能性较大的是()

A.甲B.乙C.甲、乙一样大D.无法判断

6.下图是由一些相同的小正方体构成的几何体的三视图,在这个几何体中,小正方体的个数是()

A.7 B.6 C.5 D.4

7.小明用如图所示的胶滚沿从左到右的方向将图案滚涂到墙上,下列给出的四个图案中,符合图示胶滚涂出的图案是()

8.如图,边长为12m的正方形池塘周围是草地,池塘边A、B、C、D处各有一棵树,且AB=BC=CD=3m.现用长4m的绳子将一头羊栓在其中的一棵树上,为了使羊在草地上活动区域的面积最大,应将绳子拴在()

A.A处B.B处C.C处 D.D处

二、填空题(本大题共有10小题,每小题3分,满分30分)

9.因式分解:x3-4x=.

10.当x= 时,分式■的值为零.

11.我国“杂交稻之父”袁隆平主持研究的某种超级杂交稻平均亩产820千克.某地今年计划栽插这种超级杂交水稻3000亩,预计今年收获这种杂交水稻的总产量(用科学记数法表示)是千克.

12.某校组织九年级学生春游,有m名师生租用45座的大客车若干辆,共有4个空座位,那么租用大客车的辆数是(用m的代数式表示).

13.如图,O为ABC的外接圆,且∠A=30°,AB=8cm,BC=5cm,则点O到AB的距离为cm.

14.“五一”期间,某风景区在1至7号的7天中对每天上山旅游的人数统计如下表:

这7天中上山旅游人数的众数是万人.

15.下面的扑克牌中,牌面是中心对称图形的是.(填序号)

①② ③ ④

16.如图,在一次军棋比赛中,如图所示,团长所在的位置的坐标为(2,-5),司令所在的位置的坐标为(4,-2),那么工兵所在的位置的坐标为;

17.扑克牌游戏中,小明背对小亮,让小亮按下列四个步骤操作:

第一步分发左、中、右三堆牌,每堆牌不少于两张,且各堆牌现有的张数相同;

第二步从左边一堆拿出两张,放入中间一堆;

第三步从右边一堆拿出一张,放入中间一堆;

第四步左边一堆有几张牌,就从中间一堆拿几张牌放入左边一堆.

这时,小明准确说出了中间一堆牌现有的张数.你认为中间一堆牌现有的张数是 .

18.如图,矩形ABCD中,AB=5,AD=2,点P是AB边上不与A、B重合的点.要使DPA与PCB相似(相似比不为1),则AP的长为.

三、解答题(本大题共有10小题,满分96分)

19.(本题8分)计算与化简.

(1)-2-4sin60°+■.

(2)先化简,再求值:■÷x-■,其中x=-2.

20.(本题8分)解方程与不等式组:

(1) 解方程(x-1)2=2.

(2)解不等式组1-x>0,■>1.

21.(本题8分)如图,给出下列论断:①AD=BC,②DE=CE,③∠1=∠2.请你将其中的任意两个作为条件,另一个作为结论,用“若……则……”的形式构成一个真命题.写出各种情况,并选择一个加以证明.

22.(本题8分)根据今年参加中考的学生体检情况,教育局有关部门对这些学生的视力进行了一次抽样调查,得到频数分布直方图(如图,每组数据含最小值,不含最大值).

(1)本次抽查的样本是什么?

(2)视力正常的学生占被统计人数的百分比是多少?(说明:视力不低于4.9均属正常)

(3)根据图中提供的信息,请谈谈你的感想.

23.(本题10分)现有四张扑克分别为1,2,3,4.(1)同时从中任取两张,猜测两数和为奇数的机会;(2)先从中任取一张,放回搅匀后再取一张,猜测两数和为奇数的机会.小明说(1)(2)中和为奇数的机会相同;小刚说(1)(2)中和为奇数的机会不相同.你认为他们两人中谁的说法正确?说出你的理由.

24.(本题10分)如图,地面上有不在同一直线上的A、B、C三点,一只青蛙位于P点.第一步青蛙从P跳到P关于A的对称点P1,第二步从P1跳到P1关于B的对称点P2,第三步从P2跳到P2关于C的对称点P3,第四步从P3跳到P3关于A的对称点P4,……,以下步骤类推.

问:(1)青蛙能否跳回到原处P?如果能,请作图并回答至少跳几步回到原处P?

(2)青蛙跳完第2010步落在地面什么位置?

25.(本题10分)如图①所示为一上面无盖的正方体纸盒,现将其剪开展成平面图,如图②所示.已知展开图中每个正方形的边长为1.

(1)求在该展开图中可画出最长线段的长度?这样的线段可画几条?

(2)试比较立体图中∠BAC与平面展开图中∠B′A′C′的大小关系?(需有说理过程)

26.(本题10分)某印刷厂计划购买5台印刷机,现有胶印机、一体机两种不同设备,其中每台的价格、日印刷量如下表:

经预算,该厂购买设备的资金不高于22万元.

(1)该厂有几种购买方案?

(2)若该厂每天至少印刷17万张,为节约资金,应选择哪种购买方案?

27.(本题12分)如图,在梯形ABCD中,AD∥BC,AB=CD=5,AD=6,BC=12.点E在AD边上,且AE∶ED=1∶2,连接CE.点P是AB边上的一个动点,过点P作PQ∥CE,交BC于点Q.设BP=x,CQ=y.

(1)求cosB的值;

(2)求y关于x的函数关系式,并写出x的取值范围;

(3)当EQBC时,求x的值.

28.(本题12分)如图,已知抛物线y=-x2+bx+c经过A(-2,0),C(2,8)两点,且与y轴交于点D,与x轴的另一个交点为点B.

(1)求抛物线的函数关系式,并写出顶点M及点D的坐标;