第一篇：2011年大連中考數(shù)學(xué)練習(xí)(五)(23題---26題)

2011年大連中考數(shù)學(xué)復(fù)習(xí)

（五）（23題---26題）

1.如圖，在Rt△ABC中，∠ACB＝90°，AC、BC的長為方程x 2－14x＋a＝0的兩根，且AC－BC＝2，D為。AB的中點．

（1）求a的值．

（2）動點P從點A出發(fā)，以每秒2個單位的速度，沿A→D→C的路線向點C運動；動點Q從點B出發(fā)，以每秒3個單位的速度，沿B→C的路線向點C運動，且點Q每運動1秒，就停止2秒，然后再運動1秒……若點P、Q同時出發(fā)，當(dāng)其中有一點到達(dá)終點時整個運動隨之結(jié)束．設(shè)運動時間為t秒．

①在整個運動過程中，設(shè)△PCQ的面積為S，試求S與t之間的函數(shù)關(guān)系式；并指出t的取值范圍；

②是否存在這樣的t，使得△PCQ為直角三角形？若存在，請求出所有符合條件的t的值；若不存在，請說明理由

2.如圖，△ABD中，C是AD上一點，且AD=k DB，DB= k DC，AC=mBC，E是直線BC上一點，∠AEF=∠ACB，EF交直線DB于F，探究AE與EF之間的數(shù)量關(guān)系。

3.一條筆直的公路上有A、B、C三地，B、C兩地相距150千米，甲乙兩輛汽車分別從B、C同時出發(fā)，沿公路相向而行，分別駛往C、B兩地，甲、乙兩車到A地的距離y1、y2（千米）與行駛時間x（小時）的關(guān)系如圖所示，根據(jù)圖像回答問題：

⑴圖中M點的坐標(biāo)為----------------；⑵補全甲車的函數(shù)圖像，求甲車到A地的距離y1（千米）與行駛時間x（小時）的函數(shù)關(guān)系；

⑶若A地設(shè)有指揮中心，指揮中心及兩車都配有對講機(jī)，對講機(jī)在不超過15千米內(nèi)能夠互相通話，求甲乙兩車可以同時與指揮中心用對講機(jī)通話的時間；

24.已知拋物線y=ax + bx +c與x 軸相交于A、B兩點，與y軸相交于點C，點A的坐標(biāo)為（1，0），B的坐標(biāo)為（3，0），點C的坐標(biāo)為（0，-3），2⑴求拋物線y= ax + bx + c與直線BC的解析式；

⑵若在拋物線上有一點E，在直線CB上有一點F，以A、C、E、F為頂點的四邊形是平行四邊形，求F點的坐標(biāo) ；

⑶拋物線上是否存在一點P，使得△ACP為直角三角形？若存在，求出點P的坐標(biāo)，不存在，說明理由；

第二篇：中考數(shù)學(xué)第二十五題案例分析

中考數(shù)學(xué)第二十五題案例分析

三道河中學(xué)教師張小龍

河北省中考數(shù)學(xué)試題第二十五題，在整套試題中占有舉足輕重的作用，是兩道壓軸題中的其中之一，因此，做好第二十五題，對于中考考生來說至關(guān)重要，跟蹤近幾年中考，此題多為市場營銷的利潤題，但2009年發(fā)生了變化，變?yōu)榕c生活密切相關(guān)的室內(nèi)裝修建材設(shè)計，細(xì)心想來，其實，出題的路子與以往并無多大變化，只是選材發(fā)生了變化?，F(xiàn)以2009年中考數(shù)學(xué)第二十五題為例，對如何解決第二十五題，談一下自己粗略的認(rèn)識，與同仁們共同探討：

25．（本小題滿分12分）某公司裝修需用A型板材240塊、B型板材180塊，A型板材規(guī)格是60 cm×30 cm，B型板材規(guī)格是40 cm×30 cm．現(xiàn)只能購得規(guī)格是150 cm×30 cm的標(biāo)準(zhǔn)板材．一張標(biāo)準(zhǔn)板材盡可能多地裁出A型、B型板

y 張、按裁法三裁z張，且所裁出的A、B兩種型號的板材剛好夠用．

（1）m =，n =；

（2）分別求出y與x和z與x的函數(shù)關(guān)系式；

（3）若用Q表示所購標(biāo)準(zhǔn)板材的張數(shù)，求Q與x的函數(shù)關(guān)系式，并指出當(dāng)x取何值時Q最小，此時按三種裁法各裁標(biāo)準(zhǔn)板材

多少張？

分析第一問：答案：（1）m=0n=

3這一問實際上并不難，然而很多考生并未得到分，究其原因，并不是此問有多深奧，而是很多同學(xué)根本就沒讀懂題，認(rèn)真分析一下裁法一，就可以發(fā)現(xiàn)，用標(biāo)準(zhǔn)板材裁出A、B型板材只是將長150cm盡可能多的裁出幾個60cm和40cm，要求余料不能再裁，而寬度三種板材一樣，所以，不必考慮。裁法一，A板材1塊，B板材2塊，合計60×1＋40×2=140，余料為10cm.裁法二：A板材2塊，用料60×2=120，150-120=30＜40，所以可裁B板材0塊即m=0。同理，裁法三，(150-0×60)÷40可得最大整數(shù)值為3，即n=3.如下圖：

1點撥：中考時，遇到一些讀起來有些費解的題目，不要被表面現(xiàn)象所蒙蔽，一定要有耐心，很多題目都能在生活中找到原型，要與實際生活結(jié)合起來，把他們看成是生活中的數(shù)學(xué)，建立出我們所學(xué)的數(shù)學(xué)模型，發(fā)現(xiàn)其中隱含的數(shù)學(xué)知識，多讀兩遍題，這樣比較簡單的題目就迎刃而解了。

分析第二問：答案：（2），即這一問，多數(shù)同學(xué)的疑問就出在：這些板材是否按一種或兩種還是三種裁法一共裁出A板材240塊，B板材180塊，如何確定是按幾種裁法裁出的呢？細(xì)心人當(dāng)然一眼就能看出，也就是題中明確指出的：設(shè)所購的標(biāo)準(zhǔn)板材全部裁完，其中按裁法一裁x張、按裁法二裁y張、按裁法三裁z張，且所裁出的A、B兩種型號的板材剛好夠用．所以，是三種裁法，共裁出A板材240塊，B板材180塊。即

x?2y?240

y?120?

x

2x?3z?18，0即

z?60?

x

可列式為：1x＋2y＋0z=240,整理得：x＋2y=240, 即

z?60?

3y?120?

2x，2x＋0y＋3z=180整理得：2x＋3z=180即

點撥：中考第二十五題在路子不變的情況下，第一問或第二問多數(shù)會與一次函數(shù)有關(guān)，當(dāng)然一次函數(shù)的得出不完全一樣，情況（1）：不把得出一次函數(shù)作為一個單獨步驟，但在解題過程中需要直接或間接求出。例如2006年第二十七題；情況（2）：直接出現(xiàn)兩個變量，例如市場營銷利潤問題中的，銷售量隨銷售價的變化而變化。例如2003、2004年第二十七題；情況（3）：題中出現(xiàn)2或3個未知數(shù)，但作為變量不太明顯，需要仔細(xì)讀題找到等量關(guān)系后列式再變形成一次函數(shù)形式，如2007、2009年中考25題。做這類題首先需要明確屬于哪一種情況，對于前兩種情況，比較容易掌握。第三種情況，判斷清楚了也應(yīng)該沒問題。分析第三問：答案：（3）由題意，得

Q?180?

16x

x

Q?x?y?z?x?120?

2x?60?

3x

．

整理，得．

由題意，得

X+2Y=240,2X+3Z=180,y?120?

x≥0

z?60?

X≥0

x

≥0

解得 0≤x≤90．

【注：事實上，0≤x≤90 且x是6的整數(shù)倍】 由一次函數(shù)的性質(zhì)可知，當(dāng)x=90時，Q最?。?此時按三種裁法分別裁90張、75張、0張．

分析：本題中說明設(shè)所購的標(biāo)準(zhǔn)板材全部裁完，其中按裁法一裁x張、按裁法二裁y張、按裁法三裁z張，且所裁出的A、B兩種型號的板材剛好夠用．所以很容易得出方程

Q?x?y?z?x?120?

12x?60?

23x

整理，得

Q?180?

x

． 然后，根據(jù)后兩種裁法成立的條件，即y≥0、z≥0得出公共解集0≤x≤90.然后根據(jù)一次函數(shù)的增減性：Q隨x的增大而減小，所以，當(dāng)x取最大值90時，Q最小=75.此時y=75.z=0.點撥:此題的解法與2004年二十七題、2007年二十五題相似，屬于較難的一次函數(shù)題。這類題到這一步，必須考慮題中所涉及的量成立，列出不等式組，求出自變量的取值范圍，然后根據(jù)一次函數(shù)的增減性求出最適合的值。但中考第二十五題，有時候，到第三問會以二次函數(shù)的形式出現(xiàn)，出現(xiàn)形式是用第二問得出的一次函數(shù)代入整道題的函數(shù)式中，整理后得出二次函數(shù)，然后通過配方或拋物線

?b4ac?b2?

???

22a4ay?ax?bx?c(a?0)?求出最大值。這時候，特殊問的頂點坐標(biāo)?

題，因題而異，隨機(jī)解決。

通過這一例題的分析，我們在做這種函數(shù)建模的問題應(yīng)該注意

一、仔細(xì)審題，做到分層次去審題。比如先審題干的文字部分，審題干的表格，圖形部分，知道題目中告訴了什么。

再審問題，要一個一個問題的審，看看需要求什么，然后分析里面的數(shù)量關(guān)系，等量關(guān)系。這樣無論背景怎樣創(chuàng)新，我們心中都會底氣十足。

二、寫出等量關(guān)系，把已知量和未知量一起代入等量關(guān)系，一般能夠看出所建立的模型是一次函數(shù)還是二次函數(shù)。

三、根據(jù)函數(shù)解決問題，比如最值問題，需要考慮增減性、取值范圍、頂點坐標(biāo)和實際意義等。還有將函數(shù)轉(zhuǎn)化為方程或不等式，即知x求y或知y求x ,等?？傊矗悍治鼋?---------解決問題這一模式。

第三篇：重慶數(shù)學(xué)中考17題練習(xí)

2017年重慶中考數(shù)學(xué)第17題訓(xùn)練五

1.甲、乙兩人都從光明學(xué)校出發(fā)，去距離光明學(xué)校1500m遠(yuǎn)的籃球館打球，他們沿同一條道路勻速行走，乙比甲晚出發(fā)4min．設(shè)甲行走的時間為t（單位：min），甲、乙兩人相距y（單位：m），表示y與t的函數(shù)關(guān)系的圖象如圖所示，根據(jù)圖中提供的信息，下列說法： ①甲行走的速度為30m/min ②乙在距光明學(xué)校500m處追上了甲 ③甲、乙兩人的最遠(yuǎn)距離是480m ④甲從光明學(xué)校到籃球館走了30min.正確的是 ①③（填寫正確結(jié)論的序號）．

2.（2016春?豐臺區(qū)期末）甲乙兩城市相距600千米，一輛貨車和一輛客車均從甲城市出發(fā)勻速行駛至乙城市．已知貨車出發(fā)1小時后客車再出發(fā)，先到終點的車輛原地休息．在汽車行駛過程中，設(shè)兩車之間的距離為s（千米），客車出發(fā)的時間為t（小時），它們之間的關(guān)系如圖所示，則下列結(jié)論錯誤的是 ③

①貨車的速度是60千米/小時 ②離開出發(fā)地后，兩車第一次相遇時，距離出發(fā)地150千米 ③貨車從出發(fā)地到終點共用時7小時 ④客車到達(dá)終點時，兩車相距180千米

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3.（2016?道里區(qū)二模）甲、乙兩人勻速行走從同一地點到距離1500米處的圖書館，甲出發(fā)5分鐘后，乙出發(fā)并沿同一路線行走，乙的速度是甲的速度的下列說法：

①甲行走的速度是30米/分，乙的速度是50米/分； ②乙走了7.5分鐘就追上了甲； ③當(dāng)甲、乙兩人到達(dá)圖書館時分別用了50分鐘和35分鐘； ④甲行走30.5分鐘或38分鐘時，甲、乙兩人相距360米； 其中正確的個數(shù)是 ①②④ 5．設(shè)甲、乙兩人相距s（米），甲行走的時間為t（分），s關(guān)于t的函數(shù)圖象如圖所示，3

4.（2016?棗莊模擬）小明和小亮在操場的同一條筆直的跑道上進(jìn)行500米勻速跑步訓(xùn)練，他們從同一地點出發(fā)，先到達(dá)終點的人原地休息，已知小明先出發(fā)2秒，在跑步的過程中，小明和小亮的距離y（米）與小亮出發(fā)的時間t（秒）之間的函數(shù)關(guān)系如圖所示，下列四種說法：

①小明的速度是4米/秒； ②小亮出發(fā)100秒時到達(dá)了終點； ③小明出發(fā)125秒時到達(dá)了終點； ④小亮出發(fā)20秒時，小亮在小明前方10米．其中正確的說法為

①②③

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5.（2015?青山區(qū)一模）甲、乙兩名自行車愛好者準(zhǔn)備在一段長為3400m的筆直公路上進(jìn)行比賽，比賽開始時乙在起點，甲在乙的前面，他們同時出發(fā)，勻速前進(jìn)，已知甲的速度為15m/s，設(shè)甲、乙兩人之間的距離為y（米），比賽時間為x（秒），圖中的折線表示從兩人出發(fā)至乙先到達(dá)終點的過程中y（米）與x（秒）的函數(shù)關(guān)系，根據(jù)圖中信息，乙到終點時，甲離終點還有 40 米．

6.甲、乙兩名自行車愛好者準(zhǔn)備在一段長為3500米的筆直公路上進(jìn)行比賽，比賽開始時乙在起點，甲在乙的前面．他們同時出發(fā)，勻速前進(jìn)，已知甲的速度為12米/秒，設(shè)甲、乙兩人之間的距離為s（米），比賽時間為t（秒），圖中的折線表示從兩人出發(fā)至其中一人先到達(dá)終點的過程中s（米）與t（秒）的函數(shù)關(guān)系．乙到達(dá)終點C時兩人相距 200 米．

7.（2016?莆田模擬）A、B兩地之間路程是350km，甲、乙兩車從A地以各自的速度勻速行駛到B地，甲車先出發(fā)半小時，乙車到達(dá)B地后原地休息等待甲車到達(dá)．如圖是甲、乙兩車之間的路程S（km）與乙車出發(fā)時間t（h）之間的函數(shù)關(guān)系的圖象． b的值為 ．

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8.（2015?武漢校級模擬）甲、乙兩車從A地出發(fā)以各自的速度勻速開往450km外的B地，甲車先行0.5h后乙車出發(fā)，乙車到達(dá)B地后原地休息．甲、乙兩車的距離s與乙車行駛的時間t之間的函數(shù)關(guān)系如圖，則此次行程中，甲、乙兩車兩次相遇的時間間隔為 6 h．

9.（2016?寬城區(qū)一模）甲、乙兩人從學(xué)校出發(fā)沿同一路線步行到距學(xué)校1500米處的圖書館看書，甲與乙在行進(jìn)過程中以各自的速度勻速行走，甲比乙先出發(fā)5分鐘，乙比甲先到達(dá)圖書館，甲、乙兩人間的距離y（米）與甲的行走時間x（分）之間的函數(shù)圖象如圖所示．線段BC所在直線對應(yīng)的函數(shù)表達(dá)式 ．

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第四篇：2014大連中考英語真題

大連市2014年初中畢業(yè)升學(xué)考試英語 注意事項：

1.請在答題卡上作答，在試卷上作答無效。

2.本試卷共七大題，72小題，滿分140分。考試時間100分鐘。(受版面限制，完型填空、閱讀理解 圖略）

第I卷 選擇題（共70分）

I.單項填空（本題共10小題，每小題1分，共10分）。

從各題所給的四個選項中，選出可以填入空白處的最佳選項。1.At primary school,I dreamed of being_____astronaut.A.a B.an C.the D./ 2.I often go to the cinema with my parents _____Saturdays.介詞 A.at B.by C.on D.in 3.The boys in my class are interested in_____,especially ball games.名詞 A.music B.science C.art D.sport 4.--Betty,_____do you start celebrating New Year in America?--On December 31st.副詞

A.when B.where C.why D.how 5.The Australians are like the English in many ways_____they have many British relatives.連詞(結(jié)果狀語從句連接詞)A.if B.because C.so D.although 6.It's_____to throw away old things.Some of them can be reused.形容詞 A.normal B.dangerous C.wasteful D.necessary 7.The air is very clear today,so we'll_____the whole park from up the hill.動詞

冠詞

A.visit B.enter C.see D.cross 8.My friends are going to different schools,but I hope we will_____with each other.動詞短語

A.go back B.grow up C.have a word D.stay in touch 9.The CD player will go wrong if you don't use it _____.副詞 A.properly B.carelessly C.quietly D.clearly 10.--I passed my PE test yesterday.情景交際--Did you?_____ A.It doesn't matter B.What a Pity!C.Thanks a lot.D.Congratulations!II.完形填空

（一）（本題共12小題，每小題1分，共12分）

閱讀下面短文，理解其大意，然后從各題所給的四個選項中，選出可以填入空白處的最佳選項。In a small village in Parkville,there is an unlocked(未鎖的)shop that has no workers in it.The shop is run(經(jīng)營)in a telephone box.Lewis Cooke,who provides goods(商品)for the shop ,said,“Nothing has been stolen__11__it opened.”

In1998,the only shop in the village__12__.The villagers had great difficulty in getting goods.To solve this problem,the __13__ to change a telephone box into a shop.In the shop ,you __14__find many kinds of goods.Mr.Cooke brings goods to the shop every morning before 7am.He puts__15__the things the shop has in the shop.People can call him if __16__want anything else.The next day,they can go to the phone box to __17__.Mr.Cooke will write down the name of the people who want the goods and put the __18__beside the goods.When the customers come to the shop ,they will be able to find their goods__19__.People can either leave __20__or a cheque(支票)for the goods.“The phone box isn't locked and people can go there whenever they want,__21__no one has stolen a thing.This shows how ___22__everyone around here is,”said Mr.Cooke.11.A when B.until C.before D.since 12.A.opened B.disappeared C.closed D.started

13.A.promised B.decided C.refused D.forgot 14.A.might B.can C.must D.need 15.A.a number of B.a couple of C.a pair of D.a list of 16.A.we B.I C.they D.you 17.A.try it out 試驗 B.take it off脫下，起飛

C.write it down寫下 D.pick it up拿出 18.A.report B.menu C.paper D.news 19.A.easily B.safely C.regularly D.suddenly 20.A.messages B.advice C.money D.lestters 21.A.so B.and C.or D.but 22.A.honest B.rude C.brave D.polite III.閱讀理解

（一）（本題共19小題，每小題2分，共38分）

A.閱讀下列短文，根據(jù)短文內(nèi)容，從各題所給的四個選項中，選出最佳選項。Passage 1 Would you like to visit Britain one day?--Our country would like to welcome you!Overseas travel can be expensive.But there are ways of visiting Britain cheaply.We hope that we can give you some good ideas.When to come?If you can avoid the busy months--July and August ,your visit may be cheaper.There will be smaller numbers of visitors.British weather is pleasant from April to the end of September.Of course,you can visit it in winter,but it is often dark by 4pm.Many places,such as large houses and castles(城堡),are closed early in winter.However,if you are interested in museums,art galleries or theatres,winter may be a good time to visit.Be prepared.If you are a student,it's a good idea to apply for(申請)an International Student Identity Card(身份證).With this card,you can save a lot of money.You can get the card from your local student travel office ,and you can also call(44)-08708-413224 to get it.To get the card,you need to show that you are a student,get a passport photo ,and pay a little money.23.Which is the most popular time for visitors to Britain?細(xì)節(jié)題 A.July and August B.The winter season C.From April to September D.The vacation season.24.What's the weather like in winter in Britain?細(xì)節(jié)題 同意轉(zhuǎn)換 A.There is lots of snow.B.The daytime is short.C.It's neither hot nor cold.D.The weather is pleasant.25.If you are a student with an International Student Identity Card,_____.細(xì)節(jié)題 A.you have to prove you're a student B.you will pay less money for your trip.C.you can call(44)-08708-413224 for help.D.you must apply for a trip from the student travel office 26.The writer of this article is _____.細(xì)節(jié)題 A.a German B.a Chinese C.an Englishman D.an American 27.This passage is mainly about_____.2009fashion 特例 每一段講什么 糾結(jié)兩項用核心概念

A.when to visit Britain B.why to take a trip to Britain C.what to do and see in Britain D.how to trip cheaply in Britain Passage2 Mr.Dawson was an old man with a bad temper.Kids(孩子)were afraid to go into his yard(院子)to pick apples.One day ,12-year-old Janet and her friend Amy had to walk past Mr.Dawson's house.When Janet saw him ,she suggested crossing the street to the other side.But Amy said they needn't.When Mr.Dawson saw Amy ,he smiled and said ,“Hello,Amy!I see you have a new friend with you today.”Amy smiled back.Mr.Dawson looked friendly and gave them each a fresh apple.Later Janet asked Amy,“Everyone says he is the most unwelcome person in town.Why was he so kind to us?”Amy explained that when she first walked past his house,she was also afraid of him.But she imagined there was an invisible(看不見)smile on his face and then started talking to him.Beginning with a “hello”at first,and then speaking more each time.“An invisible smile?”Janet was puzzled(困惑的).“Yes,”answered Amy.“My grandma told me to think so.She says smiles can spread.If we keep smiling at someone ,sooner or later they will smile back.”

Remember what Amy's grandma said,and we will find that most people can't refuse our smile.28.Mr.Dawson was thought to be a(an)_____person.細(xì)節(jié) A.warm-hearted B.unhappy C.badly-behaved D.unfriendly 29.How did Janet feel when Mr.Dawson gave them two apples? 細(xì)節(jié) A.Happy B.Surprised.C.Proud.D.Terrible.30.Why was Mr.Dawson kind to Amy?細(xì)節(jié)

A.Because Amy was never afraid of him.B.Because Amy's grandma was his old friend.C.Because Amy was kind to Mr.Dawson first.D.Because Amy was the most popular girl in town.31.From the story,we know Amy is a girl who_____.推斷題 A.likes helping others B.never says no to older people C.enjoys working with her friends D.would like to take others' advice 32.Which can be the best title of this passage? 主旨 A.How to be a welcome person B.Smiles build a better world C.what's the best thing about life?.Is it important to get on well with others? Passage3 What will the house of the future look like?Could it have gardens on its walls,or a pool with fish for dinner ? Architects(建筑師)believe that they are all possibilities.The only thing for sure is that the house will be as green as possible.The tree house Many architects in the world would like to build a “tree house”.Like a leaf ,the surface of the house collects sunlight during the day.The energy can be used to heat water,produce electricity,and even create fresh air for the home.The “root(根)”of the house is deepunder the ground so that it can control（控制）the home's temperature.The lizard（蜥蜴）house

Like a lizard ,changing colour with the weather is the most important design of a lizard house,When it's in the bright sun,the cover of the house will turn dark to protect it from strong heat.During dark days,it rurns white and takes in as much light and heat as possible to produce energy.Meals at home The future of food production is taken as one part of the design of the building.Gardens may appear on the outside walls of the house.People can plant tomatoes,carrots and green tea on them.So every day in the morning,you just need to walk outside and collect your meals.Learning from the past Looking to the future isn't the only way to be green.Sometimes,ancient techniques(技術(shù))can also help cut down energy use.For example,a chimney(煙囪)can be a useful air conditioner because it is easier for hot air to flow out of the chimney.33.The tree house is special for _____.細(xì)節(jié) 同義轉(zhuǎn)換

A.fresh air creation B.energy collection C.its recycling system D.electricity production 34.What is the colour of the lizard house in sunny days? A.White.B.Black.C.Bright D.Dark.turn用法 35.“Meals at home”means_____.段落主旨 A.we needn't buy food any more B.the house can produce food itself C.meals will be cooked more easily at home D.plants will be grown on the walls of the house 36.The last kind of the house is different from others because_____.細(xì)節(jié) A.it looks as the same as an old house B.it makes less use of natural materials C.it gets the idea from ancient techniques

D.it is easier for hot air to flow out of the house 37.All the houses above are designed to _____.A.reduce air pollution B.cut down energy use C.make our life greener A推出B 選A D.create a news environment B.閱讀短文，根據(jù)短文內(nèi)容，從所給的六個選項中選出可以填入空白處的最佳選項，使短文意思完整、連貫。（有兩項為多余選項）

Passage4 關(guān)鍵信息

Freedom of riding bicycles There isn't any other type of transportation that is as common as bicycles.In China,they have a very long history.But now ,not only in China,bikes are becoming popular in many European countries.__38(_F_)Bicycles are popular for many reasons.The most important one is prodably its great use in protecting the environment.__(D)39__In some European countries,bike-griendly facilities(設(shè)施)have helped clear busy roads.As a traditional “cycling capital”,Copenhagen's roads keep bicycles and cars separated（分開）as much as possible.On these routes(路線),there are pre-green lights for cyclists.These kinds of bicycle traffic lights turn green a few seconds before car traffic lights do.It gives the cyclists time to avoid traffic while crossing.Cycling also gives people a feeling of freedom.__40_(C)_In cities like Amsterdam and Hague ,up to 70 percent journeys are made by bike.To make biking easier,many European cities like Paris and Berlin allow cyclists to bring their bicycles onto subway trains.主旨題

__41__(A)There are some safety rules you need to follow.Stop at all stop signs and obey red lights just as cars do.Wearing a helmet(頭盔)can protect your head if you fall down.If you are cycling with friends,ride in a line.Don't face each other while riding side by side.A.However,cycling is not always easy.B.They're especially popular among students.C.Some young people see cycling as a fashion.D.Cycling is also a great way to reduce heavy traffic.E.That's why many young people choose it as a way to get around the city.F.According to the BBC,more bicycles were sold than cars in Europe last year

IV.情景交際（本題共5小題，每小題2分，共10分）

根據(jù)對話內(nèi)容，從所給的七個選項中選出可以填入空白處的最佳選項，使對話內(nèi)容完整。為多余選項）

Betty:What are you going to do on holiady,Tony? Tony:__42__(D)Betty:You'll love it!I Went there two years ago.We had a great time.Tony:__43__(G)Betty:It took about nine hours.Tony:__44__(C)Betty:Well, first, we went to Disneyland.Then we went to Hollywood.Tony:__45__(B)I can't wait to go there.Betty:It's really a wonderful place.__46__(E)Tony:Thank you.（有兩項

A.I've no idea.B.It sounds brilliant!C.Where did you go? D.We are going to Los Angeles.E.I'm sure you will have a nice trip.F.Did you see anything interesting? G.How long did it take to get there? 第II卷 非選擇題（共70分）

V.完形填空

（二）（本題共15小題，每小題2分，共30分）

A.根據(jù)短文內(nèi)容，用方框內(nèi)所給詞或短語的適當(dāng)形式填空，使短文內(nèi)容完整。（每詞或短語限用一次）

many classroom good a few get family ill stop hear of have

Hope for the future 初三課文原文

Liu Sanzi is an eight-year-old boy from a village in Hunan Province.His parents want him to drop out of school.It's important for him to work on their farm because there are seven people in Liu's __47family__ and they are very poor.Li Yinming is 14 and from hangxian in Gansu Province.He __48stopped__ going to school a few years ago.His parents have been __49ill and he has to look after them.Many children like Li Yinming and Liu Sanzi can't __50get__ an education because their families are poor.Now they can go to school with the help of Project Hope.In the last 15 years, this project __51has__ raised money and paid for the education of 2.5 million poor students in the countryside.People in China and abroad have given 2.2 billion yuan.With this money, Project Hope has built __52_many_ schools and libraries.It has also trained teachers and it has sent students to high schools.Last year Shen, a boy from Shanxi Province, went to a school with no electricity and only __53a few__ books.But this year he's at a new school with big __54classrooms__ and lots of books.Project Hope paid for it.Most people in China have __55heard of__ Project Hope and have given money.But 40 million children from poor families still need help.Because of Project Hope, thousands of children have __56better__ lives.Perhaps we should all ask: What can we do for Project Hope? How can we help? B.閱讀下面短文，在短文的空格內(nèi)填入適當(dāng)?shù)脑~，使其內(nèi)容通順。（每空格限填一詞）

Did you know that Earth is home to __57millions__ of animals? A recent survey shows that scientists have found more than 2 million kinds of animals and there are over 10 million we haven't discovered yet.Animals are much more than food or pets for humans.Animals are __58_clever_.Some of them do very unusual things.Research shows that animals can use tools.For example, chimpanzees（黑猩猩）use sticks to get white ants out of the ground.They even teach each other how to use tools.Scientists find that animals have their __59own_ ways to communicate.Did you know dolphins（海豚）use ultrasound（超聲）to communicate? Birds learn to sing from their parents.They also learn to tell the difference between the sound of their group and those of other groups.Animals have societies too.Let's take ants as an __60example__.An ant family usually has millions of ants.Some ants are strong enough to fight against enemies（敵人）.Some take care of babies.Others go looking for food.They have organizations that make the group work well.Animals can help humans in many ways.Long age, people used pigeons(鴿子）to send mail over long distances.Dogs have been the best friends to humans since ancient times.Nowadays some dogs are even __61__helpful to guide blind people.Dogs also use their noses to search out drugs for the police.Ⅵ.閱讀理解

（二）（本題共5小題，每小題2分，共10分）

閱讀下面短文，根據(jù)短文內(nèi)容，回答下列問題。

Jessica Ennis:a role model for teenagers Jessica Ennis,a British track and field（田徑運動）star,was chosen as the World Sportswoman of the Year 2013.The 27-year-old athlete（田徑運動員）was the face of the London 2012 Olympics and is a role model to many teenagers.Ennis developed her interest in track and field at a young age.When her parents took her to hurdle events at a stadium in England,she fell in love with the sport immediately.In addition to the hurdles,Ennis tried her hand at the heptathlon（女子七項全能）,a race combination（結(jié)合）of high jump,long jump,100-metre hurdles and four other sports events.Throughout high school,she spent much of her time on training.However,many of her schoolmates didn't believe she could be an athlete.“When I started practicing the heptathlon,I was always getting people saying‘You’re too small and you won't be good at this event because of your height,'”Ennis said.But other people's words didn't make her feel sad.Instead,she started practicing even harder than before.She dreamed of being an Olympic champion one day,and her dream came true finally.Ennis's success inspires（鼓舞）many teenagers:if you want to achieve anything,you just give this all your attention and don't worry about other people's words.If you have a dream,please follow your heart and try your best to make it happen!62.How old was Ennis when she became an Olympic champion?26years 63.What did Ennis's schoolmates think of her as an athlete? too small and you won't be good at this event because of your height 64.Did Ennis believe she could be a successful athlete? Yes, she did 65.Why did Ennis become successful? you have a dream,please follow your heart and try your best to make it happen!

66.Why did the writer call Ennis a role model for teenagers?

Ⅶ.寫

A.句子翻譯。將下列句子譯成英語。（本題共5小題，每小題2分，共10分）67.艾爾斯巖（Ayers Rock）長3,600米，高348米。

固定用法 Ayers Rock is 3.6 kilometers long, and 348 meters high.68.攝影比賽你獲獎了嗎？

一般過去時 Did you win the photo competition? 69.媽媽讓我每天自己整理房間。每天| 一般現(xiàn)在時 Mum asks me to tidy up the room myself every day.70.孔子是中國古代偉大的思想家，今天我們依然受他思想的影響。被動語態(tài) Confucius is known as a great thinker in ancient China, we are influenced by his thoughts today.71.對外國人來說，如果他們以前沒用過筷子，用起來就會很難。If 條件狀語從句 | it is adj.to do It is difficult for foreigner to use chopsticks if they haven’t used them before.B.書面表達(dá)（共20分）

72.假期中，我們有時間做與學(xué)校學(xué)習(xí)生活不同的很多事情，如旅游、干家務(wù)、做義工、參加夏（冬）令營??請你根據(jù)以往的假期生活經(jīng)歷，用英語寫一篇短文，跟同學(xué)們分享你在假期做過的一件事情及體會。

內(nèi)容提示：（1）講述你在假期里做過的一件事情；

（2）談?wù)勀阕鲞@件事情的體會。

要求：（1）中心突出，語義連貫，層次清晰，書寫規(guī)范；

（2）文中不得出現(xiàn)真實姓名和校名；

（3）詞數(shù)80詞左右。

完型：連詞

2、動詞

3、名詞

2、短語

2、代詞

1、形容詞

1、副詞

1、閱讀：旅游、道理、科技、環(huán)保、健康、勵志 翻譯：1幾米高 時態(tài) 一般過 一般現(xiàn)

3被動 固定句式 it is adj，5從句

第五篇：2014中考數(shù)學(xué)練習(xí)(一)

2014年中考數(shù)學(xué)每日一練

練習(xí)題

（一）1、將下列圖形繞其對角線的交點逆時針旋轉(zhuǎn)90，所得圖形一定與原圖形重合的是()

A．平行四邊形B．矩形C．菱形D．正方形

2、現(xiàn)有3cm，4cm，7cm，9cm長的四根木棒，任取其中三根組成一個三角形，那么可以組成的三角形的個數(shù)是（）

A．1個B．2個C．3個D．4個

3、為落實“兩免一補”政策，某市2011年投入教育經(jīng)費2500萬元，預(yù)計2013年要投入教育經(jīng)費3600萬元．已知2011年至2013年的教育經(jīng)費投入以相同的百分率逐年增長，則2012年該市要投入的教育經(jīng)費為萬元．

4、某賓館有單人間和雙人間兩種房間，入住3個單人間和6個雙人間共需1020元，入住1個單人間和5個雙人間共需700元，則入住單人間和雙人間各5個共需_____________ 元．

m-1x5、若關(guān)于x有增根，則m的值是（）x-1x-1

A．3B．2C．1D．-

16、在一次“人與自然”知識競賽中，競賽題共25道，每題4個答案，其中只有一個正確，選對得4分，不選或選錯倒扣2分，得分不低于60分得獎，那么得獎至少應(yīng)答對題（）

A．18題B．19題C．20題D．21題

?x-1≤0，7、不等式組?的整數(shù)解是．．．?-2x＜30

閱讀材料：若一元二次方程ax+bx+c=0(a≠0)的兩個實數(shù)根為x1、x2，則兩根與方程系 數(shù)

8、bc之間有如下關(guān)系：x1+x2=-，x1x2． aa

11根據(jù)上述材料填空：已知x1、x2是方程x2+4x+2=0的兩個實數(shù)根，則+． x1x2229、已知關(guān)于x的方程x?mx?5?0的一個根是5，那么m10、一學(xué)校為了綠化校園環(huán)境，向某園林公司購買了一批樹苗，園林公司規(guī)定：如果購買樹苗不超過60棵，每棵售價120元；如果購買樹苗超過60棵，每增加1棵，所出售的這批樹苗每棵售價均降低0.5元，但每棵樹苗最低售價不得少于100元，該校最終向園林公司支付樹苗款8800元，請問該校共購買了多少棵樹苗？