第一篇：七年級數學練習卷

1.若不等式組{1+x>a2x-4≤0有解，則a的取值范圍是_______.2.不等式4-3x≥2x-6的非負整數解是_________.3.已知關于x的方程2x+4=m-x的解為負數，則m的取值范圍是__________.4.若關于x,y的二元一次方程組｛2x+y=3k-1x+2y=-2的解滿足x+y＞1，則k的取值范圍是___________.5.若關于x的不等式（1-a）x＞2可化為x＜2/1-a,則a的取值范圍是____________.6.已知4a-（3x的3-2a次方）＞1是關于x 的一元一次不等式，則該不等式的解集為_________.7.醫學中規定：人的心臟每分鐘跳動的次數a的正常范圍不少于60次，且不多于100次，則a的取值范圍可表示為____________.8.若a＜b,則{x＞ax＞b的解集是_________,{x＞ax＜b的解集是___________,{x＜ax＜b的解集是_________,{x＜ax＜b 的解集是___________.9.使式子x/2x-4有意義的x的取值范圍是_____________.10.已知3-2x＜1，則化簡 |1-x|-|x| 的結果是__________.二．解答題。

11.用若干輛載重為8噸的汽車運一批貨物，若每輛汽車只裝5噸，則剩下10噸貨物。若每輛汽車裝滿8噸，則最后一輛汽車不空也不滿，請問有多少輛汽車？

12.已知自然數c滿足8ac-4＜3bc,又 |4a-5| 與（4a-b-2）2互為相反數，求c的值。

第二篇：六年級數學練習卷

六年級數學練習卷

（四）姓名

分數應用題

1、水結成冰時，體積增加1/10，當冰融成水后，體積要減少幾分之幾？

2、某商店同時賣出兩件商品，每件各得30元，其中一件賺20%，另一件虧本20%，這個商店賣出這兩件商品是賺錢還是虧本？

3、某處擺著甲、乙兩盆花，一群蜜蜂飛來，在甲花上落了1/4，在乙花上落了1/3。假如這群蜜蜂中再有兩盆花上蜜蜂之差的3倍的蜜蜂落在花上，則剩下2只蜜蜂，這群蜜蜂共有多少只？

4、小牛乘汽車從縣城到省城需2天，他第一天走了全程的1/2又72千米，第二天走的路程等于第一天的1/2，求縣城到省城的距離。

5、光明小學六年級有學生360人，其中女生占7/12，后來又轉來了幾名女生，這樣女生占六年級總人數的60%，轉來的女生有多少人？

6、甲乙兩個養豬專業戶共養豬2000頭，如果甲賣掉他原有豬的1/4，已賣掉110頭，則甲、乙兩戶剩余的豬的頭數相等，甲兩戶原來積各養豬多少頭？

7、人民機械廠加工一批零件，甲車間加工這批零件的20%，乙車間加工余下的25%，丙車間加工再余下的40%，還剩下3600個沒加工，這批零件共有多少個？

8、慶豐文具店運來的毛筆比鋼筆多1萬支，其中毛筆的3/7與鋼筆的1/2支數相同，慶豐文具店共運來多少萬支筆？

9、四個孩子合買一只60元的小船。第一個孩子付的錢是其他孩子付的總錢數的一半，第二個孩子付的錢是其他孩子付的總錢數的三分之一，第三個孩子付的錢是其他孩子付的總錢數的四分之一，第四個孩子付多少錢？

10、煤氣收款員到一幢樓里收煤氣差價款，他走出樓時一算，沒交款的戶數占已交款戶數的1/8。如果少收2戶，則沒交款的戶數恰好占已交款戶數的1/6，這幢樓有多少住戶？

11、某車間生產甲、乙兩種零件。生產的甲種零件比乙種零件多12個，乙種零件全部合格，甲種零件只有4/5合格，兩種零件合格的一共是42個，兩種零件共生產多少個？

12、某車間兩個生產小組計劃生產680個零件，實際兩個小組共生產了798個零件，甲組生產的零件數比本組的任務多生產了1/5，乙組生產的零件僅比本組任務多生產3/20，兩個小組原來的任務各是多少個？

13、把105升水注入甲、乙兩個容器，可注滿甲容器及乙容器的1/2，或可注滿乙容器及甲容器的1/3，每個容器的容量各是多少？

14、有三堆棋子，每堆棋子一樣多，并且都只有黑白兩種棋子。第一堆里的黑子數與第二堆里的白子數一樣多，第三堆里的黑子為全部黑子的2/5。把三堆棋子集中在一起，白子為全部棋子的幾分之幾？

第三篇：七年級英語練習卷2

七年級下英語期末測試題

一.單項選擇

(a)1.Beijing is a beautiful city.______ people come here for a visit every day.A.Thousands ofB.Thousand ofC.Thousands

(b)2.–Did you watch the movie last night?

--No, I didn’t, but my mother ______.She loves movies.A.doesB.didC.was

(a)3.–What is the boy like?

--He is very _____ and some people don’t quite like him.A.naughtyB.well-behavedC.friendly

(b)4.We must get there ______.You know, to be late is bad manners.A.in timeB.on timeC.by the time

(c)5.It’s very difficult ______ him ______ the paper plane.A.for;mendB.of;mendingC.for;to mend

(c)6.______?--He was a computer engineer working for Microsoft.A.Who was heB.What was he likeC.What did he do

(a)7.–What do you think of this new film?--______.A.It’s very interestingB.I think soC.I’d love to

(b)8.–What did you ______ when you were a little boy?--We listened to children’s program.A.hearB.listenC.listen to

(b)9.______ comes after October and before December.A.AugustB.NovemberC.January

(b)10.I am not able to play ______ piano but I am able to play ______ football.A.the;theB.the;/C./;the

(ba)11.He decided to be an actor when he finished ______ at the age of 14.A.schoolB.the schoolC.schools

(a)12.The door was ______, but the windows were ______.A.close;openB.closed;openC.closed;opened

(a)13.___ there a band and many young people on the playground yesterday evening?

A.WasB.WereC.Did

(c)14.After that film, the actress became ______.A.popular and popularB.more and more popularC.popularer and popularer

(bc)15.Jim is ______ of the two boys.A.tallerB.the tallestC.the taller

(a)16.Could you help me ______ this big desk to the gate?--Certainly.A.moveB.makeC.do

(a)17.–Can you come to the party?--I’d love to, ______.A.but I’m too busy to go.SorryB.and I’m afraid notC.and you can go

(c)18.Is there going to ______ a sports meeting next Sunday?

A.haveB.isC.be

(c)19.Changjiang River is one of ______ rivers in the world.A.longerB.the longerC.the longest

D21.She likes playing____ violin, but she doesn’t like playing_____basketball.A.the;aB./theC.the;theD.the;/

(c)22 There ______ five tall trees in front of my house when I was eight.A.isnB.areC.wereD.was

(d)23.Don't point ________ others.It's not polite.A．atB．inC．onD．for

(c)24.—where is your mother?—She is cooking lunch in the ______ now.A.bedroomB.bathroomC.kitchenD.living room

(b)25.Please ________ look outside.Look at the blackboard.A.notB.don’tC.aren’tD.can’t

(a)26.----Why are they going to do some sightseeing ?

---______ they like Chinese culture.A.BecauseB.WhenC.IfD.After

(c)27．— When ________ you ________ to China ?— In February, 1999．

A．do, come

B．do, came

C．did, come

D．did, came

(b)28．Shakespeare decided ________ an actor when he was fourteen.A．/B．toC．to beD．to do

(b)29..— What’s your best friend like?—______.A.She is a student

B.She’s nice and friendly.C.She likes doing some sightseeing

D.She doesn’t like anything.(d)30.—Mum, I’ m going to Ann’s party this evening.—_____.A.Why not

B.Good idea

C.Don’t come back late.D.Have a good time

二.從方框中選擇介詞填空，每詞只能用一次

1.Betty was born in Quincy, a town __in____ the east coast of America.2.There is a big garden _in_____ lots of trees behind my house.3.Nelson Mandela was President of South Africa from 1994 _____to_ 1999.4.Goldilocks walked _____into_ the bedroom and found there were three beds.5.Baby Bear cried, ―There’s nothing in my bowl and my chair is ___in___ pieces!‖

6.The three Bears returned but they didn’t notice Goldilocks __at____ first.7.At that time, we had games _____with_ chess, but not computer games.8.We traveled ___with___ train when we needed to go to the east.9.Some _of_____ Shakespeare’s most famous plays are Hamlet and Romeo and Juliet.10.After Zhan Tianyou died, people opened a museum ____when__ his life in Badaling near the Great Wall.三.用所給動詞的正確時態填空

1.Lucy, go and see who ___is_singing__ in the next room.(sing)

2.Our family will leave______ for Hainan in three days.(leave

3.They __waited____ until the talk ended.(wait)

4.What time _did_____ you ___get___ up this morning?(get)

5.Be quiet!The baby is ___sleeping___ right now.(sleep)

6.I __won’t listen____ to your excuse for being late again.I will talk to your parents.(not listen)

7.He __has_was___ born in a small town near London 37 years ago.(be)

8.The world __is changing____ all the time.Things never stay the same.(change)

9.We _thinked_____ over your plan.It was a good one.(think)

10.The next year, he __will return____ to his village with a girl.(return)

11.Don’t worry about your daughter.I __will take_ good care of her while you are out.(take)

12.I ____finished__ the work with Lily’s help and I was so thankful to her.(finish)

四.按要求完成句子

1.Did you go to school by bike?（改為同義句）Did you ____ride__ ___a___ _bike_____ to school?

4.Lily had fish and chips for supper yesterday, _did’t_____ __she____?

5.You will come back to see me next year, __won’t____ ___you___?完成反意疑問句

6.There was hardly any room there, _was_____ __there____?完成反意疑問句

11.To swim in this river is very dangerous.（用it作形式主語改寫句子）

It is dangerous to swim in this river

12.He is good at playing football.用basketball改為選擇疑問句

What is he good at playing football or baskeball?

13.Li Lei played computer games last改為否定句)Li Lei ____didn’t___ _____paly__ computer games last Sunday.14.Was your mother in the kitchen just now?(作肯定回答)____yes___, she ____was___.16． Martin picked some flowers in the park.(對劃線部分提問)

_____what__ _____did__ Martin ____do___ in the park?.It is a beautiful flower.(改為感嘆句)___what__________a_ beautiful flower it is!

五 完形填空(每小題1分；共10分)

Dickens, one of the greatest English writers, was born in 1of the small towns in England.When Dickens was nine years old, the family moved to London, the 2of England.There were several younger children in the 3.Their life was 4.So Dickens could not go to school.He didnt go to5until his father came out of pris監獄）.At that time he 6already twelve years old.But he did not finish school.Two years 7, he began to work.He often went to the library to 8books.He read a lot.Then Dickens wrote lots of novels and stories all his 9.Dickens died over a hundred years ago.10people are still reading his books with great interest now.(b)1.A.anyB.oneC.someD.a

(d)2.A.cityB.townC.capitalD.country

(d)3.A.schoolB.classC.cityD.family

(b)4.A.goodB.hardC.easyD.wonderful

(a)5.A.schoolB.a schoolC.the schoolD.schools

(a)6.A.wasB.isC.will beD.did

(a)7.A.agoB.beforeC.laterD.since

(d)8.A.seeB.buyC.sellD.read

(d)9.A.moneyB.homeC.classD.life

(b)10.A.ButB.So C.WhyD.While

六.閱讀理解

Tanzania(坦桑尼亞)is a country which has a lot of animals, such as gnus(角馬), lions, cheetahs(獵豹), elephants, giraffes, crocodiles and so on.Every year, many people in the world travel to this African country to watch the animals closely.But do you know how they travel?

By bus—This is the most common way.When people get on a bus, they’ll find that the bus is a little strange.It is different from the buses we often see.There are no big windows at all, but some small windows.What are they used for? Oh, people can use them to watch animals and those dangerous animals, and take photos.know that people are most interested in lions.So when two buses meet, the drivers will often stop and ask each other if they have found lions.By boatWe can often see many people are in a boat, enjoying the beauty along a river or a lake.And they can also see hippos(河馬)and crocodiles and other animals that live in the water.By hot balloon)In the early morning, when the sun is beginning to rise, a large hot balloon is also starting its journey.Taking a hot balloon makes most travelers excited.After some time, the balloon will land safely in a place and the waiters will give people a nice breakfast.But you need to spend a lot of money taking a hot balloon.A person should pay 400 dollars for an hour’s trip.(a)1.How many ways of traveling are mentioned in the passage?A.Three.B.Four.C.Five(c)2.The bus in different from the buses we often see in that ______.A.people can take pictures from the windows

B.drivers often stop and ask each other if they have found lionsC.there were no big windows, but some small windows

(b)3.If you want to watch crocodiles and hippos, it’s best to go ______.A.by busB.by boat

C.by hot balloon

(c)4.People who have a lot of money and want to feel excited can choose to

______.A.take a busB.take a boatC.take a hot balloon

b(a)5.Which of the following is true according to the story?A.The most common way to travel in Tanzania is by boat.B.Tanzania is an African country.C.Taking a hot balloon for a whole morning will cost 400 dollars.

第四篇：七年級數學平面幾何練習試卷

平面幾何練習題

一.選擇題：

1.如果兩個角的一邊在同一條直線上，另一邊互相平行，那么這兩個角（）

A.相等 B.互補 C.相等或互補 D.相等且互補

2.如圖，l1//l2，AB?l1，?ABC?130?，則???（）

A.60?

B.50?

C.40?

D.30?

A l1 B α l2 C

3.如圖，l1//l2，?1?105?，?2?140?，則???（）

A.55?

B.60?

C.65? D.70?

l1 α2 l2

4.如圖，能與??構成同旁內角的角有（）

A.1個 B.2個 C.5個

D.4個

α

5.如圖，已知AB//CD，??等于（）

A.75?

B.80?

C.85?

D.95?

A B 120 ° αC25° D

6.如圖，AB//CD，MP//AB，MN平分?AMD，?A?40?，?D?30?，?NMP等于（）

則

A.10 ?B.15

?C.5

?D.7.5

? B MC A N P D

?

7.如果兩個角的兩邊分別平行，而其中一個角比另一個角的4倍少30，那么這兩個角是（）

A.42?、138?

B.都是10 D.以上都不對

?

C.42?、138?或42?、10?

二.證明題：

1.已知：如圖，?1??2，?3??B，AC//DE，且B、C、D在一條直線上。

求證：AE//BD

A 1 3 E2 4 B C D

?CDA??CBA，2.已知：如圖，DE平分?CDA，BF平分?CBA，且?ADE??AED。

求證：DE//FB

D F CA

E B

3.已知：如圖，?BAP??APD?180?，?1??2。

求證：?E??F

A 1 B EF C 2P D

4.已知：如圖，?1??2，?3??4，?5??6。

求證：ED//FB

F E 4 A G 1 53 DB C 6 2

【試題答案】

一.選擇題：

1.C

2.C

3.C

4.C

5.C

6.C

7.D 二.證明題：

1.證：?AC//DE

??2??4??1??2??1??4?AB//CE??B??BCE?180??B??3?

??3??BCE?180??AE//BD

2.證：?DE平分?CDA

1?CDA 2

?BF平分?CBA

??FBA??CBA

??ADE???CDA??CBA??ADE??FBA

??ADE??AED

??AED??FBA?DE//FB

3.證：??BAP??APD?180

??AB//CD

??BAP??APC

又??1??2

??BAP??1??APC??2

即?EAP??APF

?AE//FP

??E??F

4.證：??3??4

?AC//BD??6??2??3?180?

??6??5，?2??1

??5??1??3?180??ED//FB

第五篇：七年級數學證明同步練習

由蓮山課件提供http:///資源全部免費

8.5～8.6 猜想 證明 同步練習

【基礎能力訓練】

1．將正數按下列的位置順序排列，根據圖中的規律，2 004應該排在（）

A．M位B．N位C．P位D．Q位

2．仔細觀察下面表格中圖形的變化規律，“？”處的圖是（）

3．下列語句中是命題的是（）

A．畫一個角等于已知角B．你討厭數學嗎

C．鈍角總大于銳角D．過A點作AB∥CD

4．下列語句中不是命題的是（）

A．2008年奧運會的主辦城市是北京B．方程3x－6=0的解是x=2

C．石家莊是河北省的省會D．過P作直線AB的垂線

5．下列命題中假命題有（）

①兩個銳角的和等于直角②一個銳角與一個鈍角的和等于平角

③如果三個角的和等于180°，那么這三個角中，至少有兩個為銳角．

A．0個B．1個C．2個D．3個

6．填空：

（1）判斷一件事情的句子叫_______．

（2）數學中每個命題都由_______和_______兩部分組成．正確的命題叫______，確的稱為_________．

（3）被人們長期的實踐所證實，并作為推理依據的事實叫做_______．

（4）用邏輯的方法判斷為正確，并作為推理依據的真命題叫做________． 由蓮山課件提供http:///資源全部免費 不正?

（5）下列命題：①所有的等腰三角形都相似②所有的等邊三角形都相似③所有的直角三角形都相似④所有的等腰直角三角形都相似，其中真命題有______（填序）．

（6）等量公理：

①等量加等量，_______相等，即

如果a=b，那么a+c______b+c；

②等量減等量，差_______，即

如果a=b，那么a－c______b－c；

③等量的同位量相等，即

如果a=b，那么ac________ac；

④等量的同分量________，即

如果a=b，c≠0，那么

⑤等量代換，即

如果a=b，b=c，那么a_______c．

【綜合創新訓練】

創新應用

7．觀察下列等式

12－02=1

2－1=3

32－22=5

42－32=7

?

根據以上計算，你發現了什么規律，請用含有n的式子表示該規律．

8．如圖，是小明用火柴搭的1條，2條，3條? “金魚”，按此規律搭n?條金魚需要火柴

數S=_______根．

22ac________bc；

多向思維

9．舉反例說明命題“大于90°的角是鈍角”是假命題．

10．?將“垂直于同一條直線的兩條直線平行”改寫成“如果??那么??”的形式．

開放探索

11．?七年級

（二）班的數學小組的幾位同學正在研究“對于所有正整數n2－3n+13”的值是否都是質數，他們認真驗算出n=1，2，3，?，10時，式子n2－3n+13?的值都是質數．部分成員還想繼續驗算下去，小明同學說：不必再驗算下去了，對于所有正整數，式子n2－3n+13的值都是質數．

你贊同小明的觀點嗎？并請驗證一下當n=12的情形．

探究學習

世界七大數學難題

2000年，美國克雷數學研究所懸賞：七大數學難題，每解破一題者，只要通過兩年驗證期，即頒發獎金100萬美元，這七道難題是：

龐加萊猜想：已被朱熹平和曹懷東證明．

霍奇猜想：進展不大．

納威厄一斯托克斯方程：離解決相差很大．

P與NP問題：沒什么進展．

楊─米爾理論：太難，幾乎沒人做

波奇和斯溫納頓─戴雅猜想：最有希望破解．

黎曼假設：還沒看到破解的希望．

答案:

【基礎能力訓練】

1．D

2．A解析：先豎切一刀，然后橫切．

3．C解析：A，D不是判斷語句，B是疑問句．

4．D解析：D不是判斷語句．

5．D解析：①反例30°+45°≠90°；②反例120°+30°=150°不是平角；? ③在三角形中符合，在多邊形中就不正確．

6．（1）命題（2）題設結論真命題假命題（3）公理（4）定理

（5）?②④（6）①和 =②相等 =③=④相等 =⑤=

【創新實踐】

7．n2－（n－1）2=2n－1

8．8+6（n－1）

9．反例：180°>90°，180°的角是平角不是鈍角；

360°>90°，360°的角是周角不是鈍角，所以大于90°的角是鈍角是假命題．

10．如果兩條直線都垂直于同一條直線，那么這兩條直線平行．

11．不贊同．

當n=12時，n－3n+13=12－3×12+13=144－36+13=121

∵121=1×121=11×11

∴121不是質數．