前言：想要寫出一篇令人眼前一亮的文章嗎？我們特意為您整理了5篇模擬試卷范文，相信會為您的寫作帶來幫助，發(fā)現更多的寫作思路和靈感。

模擬試卷范文第1篇

根據題意，從A、B、C、D四個選項中選出最佳答案。

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

模擬試卷范文第2篇

關鍵詞：模擬試卷；中考方向；考試大綱；試卷結構；科學安排；創(chuàng)新題目

中考物理模擬考試是在中考前，一方面為了摸清學生的學習效果和查漏補缺，另一方面為了讓學生提前感知中考題的題型、題量、難度，從而適應中考而進行的一次較正規(guī)的考試?？荚嚨闹匾詻Q定了必須要有一份高質量的模擬試卷。模擬卷是否科學、準確、客觀地反映學生水平，是否反映了當地、當時的中考方向，是否對教師和學生具有一定的指導意義，這些都是在考驗教師的專業(yè)水平和素養(yǎng)。如何編寫一份優(yōu)秀的中考物理模擬試卷，把握好“尺度”，值得大家廣泛關注和思考。

一、審時度勢，正確把握中考方向

一份優(yōu)秀中考物理模擬試卷應靈敏捕捉中考信息、正確把握中考方向，具有前瞻性和指導性。因此，教師首先應理解《國務院關于基礎教育改革與發(fā)展的決定》、《基礎教育課程改革綱要（試行）》、《物理課程標準》、以及《xx市關于國家基礎教育課程改革實驗工作的實施意見》等國家和地方的教育方針政策。

二、領會大綱，合理安排試題梯度

深入領會考試大綱中所說的“了解”、“理解”等詞語含義，合理安排題目的難度和梯度。一份優(yōu)秀的中考物理模擬試卷，不會都是難題或容易題，科學比例一般是：容易題約占整份試卷的30%，中等題（難度籠統地界定在容易題和難題之間）約占55%，難題約占15。全卷的難度大概為為0.65。另外，選擇題、填空題和作圖題通常來說是基礎性題目，不宜安排過多難題和綜合性強的題。難題比例不超過5%。難題放在計算題、實驗題、綜合題為宜。題目的安排也要注意遞度，一般來說，大題由易到難地設置，同一大題有多個問時則將難的一問放于最后。

三、研究結構，科學布局知識面和題型比例

在編寫中考物理模擬試卷前，都必須清楚考試范圍，然后，理清考試范圍內各章節(jié)的重、難點。這些可參考《物理課程標準》和考試大綱。出試題時應注意知識的覆蓋面和側重點。像初中物理中考模擬試卷應側重《力學》和《電學》，其次是《光學》和《熱學》，兼顧《聲現象》、能量、物質等。如：《2012年佛山市高中階段學校招生物理科考試說明》中就有明確要求：聲、光、熱約占28%，運動、力和功約占32%，電和磁約占30%，物質、能量和能源約占10%。

題量和題型分數比例應根據考試時間和難度來合理設置。通常只要嚴格按照《考試說明》的規(guī)定出卷即可。如：《2012年佛山市高中階段學校招生物理科考試說明》的要求是：選擇題8道共24分、填空題7道共21分等，滿分100分，考試時間80分鐘。

四、精挑細選，緊緊抓住重、難點

一份優(yōu)秀的中考物理模擬試卷不僅要有好的形式，更重要是有好的題目。選題時應注意以下幾點：

1.用心琢磨，做到準確

“用心琢磨，做到準確”這是一份優(yōu)秀中考物理模擬試卷的最起碼要求。因此，在出中考模擬試卷是一定要認真仔細，用心琢磨，做到準確無誤。

2.精挑細選，體現熱點

在選題時要注意廣泛，題目資源要豐富，在“廣”的基礎上要注意“精”。做到選題典型、體現熱點，幫助學生查漏補缺。

3.慎重安排好重點、難點，體現選拔性

一份中考物理模擬試卷中重點、難點的安排能反應一位教師的功力。一般來說，要考查學生水平、體現選拔性，重、難知識點多放在實驗題、計算題和綜合題，尤其是在綜合題的最后一題。從卷面上看，難點也并非只集中在某一題上，常常是分散在幾題中，佛山市的中考物理試卷就很明顯地體現這樣的規(guī)律；考察學生觀察思維能力、知識的遷移運用能力、語言組織能力的題多放在實驗題；而考察學生的思維能力和綜合運用能力的題多放在綜合題；最后一題綜合題往往設有特別難的問題，意在選拔最優(yōu)秀的人才。

對于實驗題、計算題、綜合題這些大題，應該基本具備以下幾點：（1）要與生活、生產實際密切聯系；（2）運用發(fā)散性思維能力解決；（3）有多種正確的解答方法；（4）需要較廣泛的知識面及一定的知識遷移能力。

4.防“冷”、防“偏”、防“怪”題

一份優(yōu)秀中考物理模擬試卷，不應該過多出現“冷”題、不能出現“偏”題，更不能出現“怪”題?！袄洹鳖}指在教材中不是重點知識，在模擬試卷不宜太多，多了容易本末倒置，誤導師生?！捌鳖}指超出教材或考試大綱的知識?！肮帧鳖}指沒有什么根據，甚至于該科目沒任何關系，讓人感到奇怪的題目。這樣的題目既不能提高學生能力，又不能達到“查漏補缺”的目的。“偏”題、“怪”題都不能出現在模擬卷中。

五、提倡創(chuàng)新題目，讓人眼前一亮，體現個人風格

要是模擬卷所選題目都是人家的，甚至有一些是學生已經做過的，那這樣的試卷質量將大打折扣。一份優(yōu)秀中考物理模擬試卷應該是題目新穎的，最好能做到獨一無二，讓人眼前一亮，然后愛不釋手。提升試卷質量，體現個人風格，這也是我們教師落實科學發(fā)展觀的具體要求。

總之，一份優(yōu)秀中考物理模擬試卷應該定位在處理好知識與技能、過程與方法、情感態(tài)度與價值觀之間的關系；應該定位在提高全體學生的科學素質，注重學生發(fā)展；應該提倡多種學習方式，注重科學探究和改變評價方式；應該能較客觀地反映學生的德、智水平以及不足。只有我們把握好這些“度”，才能更有效地通過試卷測試來更有效地指導復習工作。

參考文獻：

模擬試卷范文第3篇

備戰(zhàn)小升初英語模擬試卷：單項選擇

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

模擬試卷范文第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、詞匯。(5分)

根據首字母提示寫出單詞，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、選詞填空。(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、用所給單詞的適當形式填空。(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、選出與畫線部分意義相近的詞組或句子。(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、選擇填空。(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、根據要求改寫句子。(8分)

1. John has lunch at school every day. (對畫線部分提問)

___________________________________________________________________

2. Lingling gets up at six o'clock. (現在進行時)

___________________________________________________________________

3. I like the small apple. (否定句)

___________________________________________________________________

4. That tall man is Mr White. (對畫線部分提問)

___________________________________________________________________

5. What time do you go to school? (一般過去時)

___________________________________________________________________

6. It's warm in spring and cool in autumn in Shanghai. (對畫線部分提問)

___________________________________________________________________

7. I read English every day. (對畫線部分提問)

___________________________________________________________________

8. Mr Black can speak very good Chinese. (對畫線部分提問)

___________________________________________________________________

八、閱讀理解。(15分)

A.閱讀短文后做出判斷，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(變得越來越越短). 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(陸地)and in the water too. I'm going to eat a lot of insects(昆蟲)--- 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.根據短文內容，回答問題。(10分)

The Crow (烏鴉)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 (尋找)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(聲音)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! (烏鴉的叫聲)" 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、讀短文，用五個英語句子將短文寫完。(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

模擬試卷范文第5篇

1.如圖,如果點A、B、C是數軸上的三個不同的點,分別對應實數a、b、c,那么下列各式中,錯誤的是()

A.a+b

C.bc

2.二次函數y=-x2-2的圖象大致是()

3.下列命題中,假命題的是()

A.平行四邊形的對角線互相平分

B.對角線互相平分的四邊形是平行四邊形

C.矩形的對角線相等

D.對角線相等的四邊形是矩形

4.如圖,已知ABC的六個元素,則下面甲、乙、丙三個三角形中和ABC全等的是()

A.甲和乙 B.乙與丙 C.只有乙 D.只有丙

5.甲、乙兩人各隨意擲一枚骰子,如果所得的點數之積為奇數,那么甲得1分,如果所得點數之積為偶數,那么乙得1分.若接連擲100次,誰的得分總和高誰就獲勝,則獲勝可能性較大的是()

A.甲B.乙C.甲、乙一樣大D.無法判斷

6.下圖是由一些相同的小正方體構成的幾何體的三視圖,在這個幾何體中,小正方體的個數是()

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

7.小明用如圖所示的膠滾沿從左到右的方向將圖案滾涂到墻上,下列給出的四個圖案中,符合圖示膠滾涂出的圖案是()

8.如圖,邊長為12m的正方形池塘周圍是草地,池塘邊A、B、C、D處各有一棵樹,且AB=BC=CD=3m.現用長4m的繩子將一頭羊栓在其中的一棵樹上,為了使羊在草地上活動區(qū)域的面積最大,應將繩子拴在()

A.A處B.B處C.C處 D.D處

二、填空題(本大題共有10小題,每小題3分,滿分30分)

9.因式分解:x3-4x=.

10.當x= 時,分式■的值為零.

11.我國“雜交稻之父”袁隆平主持研究的某種超級雜交稻平均畝產820千克.某地今年計劃栽插這種超級雜交水稻3000畝,預計今年收獲這種雜交水稻的總產量(用科學記數法表示)是千克.

12.某校組織九年級學生春游,有m名師生租用45座的大客車若干輛,共有4個空座位,那么租用大客車的輛數是(用m的代數式表示).

13.如圖,O為ABC的外接圓,且∠A=30°,AB=8cm,BC=5cm,則點O到AB的距離為cm.

14.“五一”期間,某風景區(qū)在1至7號的7天中對每天上山旅游的人數統計如下表:

這7天中上山旅游人數的眾數是萬人.

15.下面的撲克牌中,牌面是中心對稱圖形的是.(填序號)

①② ③ ④

16.如圖,在一次軍棋比賽中,如圖所示,團長所在的位置的坐標為(2,-5),司令所在的位置的坐標為(4,-2),那么工兵所在的位置的坐標為;

17.撲克牌游戲中,小明背對小亮,讓小亮按下列四個步驟操作:

第一步分發(fā)左、中、右三堆牌,每堆牌不少于兩張,且各堆牌現有的張數相同;

第二步從左邊一堆拿出兩張,放入中間一堆;

第三步從右邊一堆拿出一張,放入中間一堆;

第四步左邊一堆有幾張牌,就從中間一堆拿幾張牌放入左邊一堆.

這時,小明準確說出了中間一堆牌現有的張數.你認為中間一堆牌現有的張數是 .

18.如圖,矩形ABCD中,AB=5,AD=2,點P是AB邊上不與A、B重合的點.要使DPA與PCB相似(相似比不為1),則AP的長為.

三、解答題(本大題共有10小題,滿分96分)

19.(本題8分)計算與化簡.

(1)-2-4sin60°+■.

(2)先化簡,再求值:■÷x-■,其中x=-2.

20.(本題8分)解方程與不等式組:

(1) 解方程(x-1)2=2.

(2)解不等式組1-x>0,■>1.

21.(本題8分)如圖,給出下列論斷:①AD=BC,②DE=CE,③∠1=∠2.請你將其中的任意兩個作為條件,另一個作為結論,用“若……則……”的形式構成一個真命題.寫出各種情況,并選擇一個加以證明.

22.(本題8分)根據今年參加中考的學生體檢情況,教育局有關部門對這些學生的視力進行了一次抽樣調查,得到頻數分布直方圖(如圖,每組數據含最小值,不含最大值).

(1)本次抽查的樣本是什么?

(2)視力正常的學生占被統計人數的百分比是多少?(說明:視力不低于4.9均屬正常)

(3)根據圖中提供的信息,請談談你的感想.

23.(本題10分)現有四張撲克分別為1,2,3,4.(1)同時從中任取兩張,猜測兩數和為奇數的機會;(2)先從中任取一張,放回攪勻后再取一張,猜測兩數和為奇數的機會.小明說(1)(2)中和為奇數的機會相同;小剛說(1)(2)中和為奇數的機會不相同.你認為他們兩人中誰的說法正確?說出你的理由.

24.(本題10分)如圖,地面上有不在同一直線上的A、B、C三點,一只青蛙位于P點.第一步青蛙從P跳到P關于A的對稱點P1,第二步從P1跳到P1關于B的對稱點P2,第三步從P2跳到P2關于C的對稱點P3,第四步從P3跳到P3關于A的對稱點P4,……,以下步驟類推.

問:(1)青蛙能否跳回到原處P?如果能,請作圖并回答至少跳幾步回到原處P?

(2)青蛙跳完第2010步落在地面什么位置?

25.(本題10分)如圖①所示為一上面無蓋的正方體紙盒,現將其剪開展成平面圖,如圖②所示.已知展開圖中每個正方形的邊長為1.

(1)求在該展開圖中可畫出最長線段的長度?這樣的線段可畫幾條?

(2)試比較立體圖中∠BAC與平面展開圖中∠B′A′C′的大小關系?(需有說理過程)

26.(本題10分)某印刷廠計劃購買5臺印刷機,現有膠印機、一體機兩種不同設備,其中每臺的價格、日印刷量如下表:

經預算,該廠購買設備的資金不高于22萬元.

(1)該廠有幾種購買方案?

(2)若該廠每天至少印刷17萬張,為節(jié)約資金,應選擇哪種購買方案?

27.(本題12分)如圖,在梯形ABCD中,AD∥BC,AB=CD=5,AD=6,BC=12.點E在AD邊上,且AE∶ED=1∶2,連接CE.點P是AB邊上的一個動點,過點P作PQ∥CE,交BC于點Q.設BP=x,CQ=y.

(1)求cosB的值;

(2)求y關于x的函數關系式,并寫出x的取值范圍;

(3)當EQBC時,求x的值.

28.(本題12分)如圖,已知拋物線y=-x2+bx+c經過A(-2,0),C(2,8)兩點,且與y軸交于點D,與x軸的另一個交點為點B.

(1)求拋物線的函數關系式,并寫出頂點M及點D的坐標;