中学练习题
其实卷子都是大同小异的，没什么本质区别，主要在于侧重点的不同。例如金榜侧重于讲解和练习，练与测侧重于刷题等，无非都是知识点总结，然后题海战术，重复练习。不过做卷子真正的意义应该是巩固和提升对学习内容的理解。不过有的卷子内容与实际不符，做起来没什么意义，所以国内的好卷子其实并不多。
在此强力推荐五三，多做五三的卷就会发现它的答案给得乎完整，这就可以很好的帮助你的学习，对于成绩不理想的同学可以辅助了解，对于优等生来说后面的大题给的又贴近实际考试，可以帮你做到拔尖。推荐可以买五三的长卷子，前面扉页还附带知识点，可以帮助复习知识。最主要的是五三侧重于开放试题，可以见到许多巧妙的解题手法和技巧，这有利于日后的学习之路。总之五三真的不错，比较适用于各学习阶层的同学，希望对你有所帮助，祝你的成绩越来越好！！！
❷ 初中习题
电功和电功率测试题
(时间:60分钟 满分:100分)
一.填空题(24分)
1.加在阻值为12欧的电阻器两端的电压是伏，5分内电流通过这个电阻做了 焦的功。
2.标有“12V 9W”字样的小灯泡，它的灯丝在正常工作时的电阻是 欧，接到电路中通过它的电流是0.5安，则这盏灯的功率是 瓦。
3.一只额定电压是220伏的灯泡，把它接在电压是110伏的电路上时，实际功率是25瓦，则此灯泡的额定功率是 瓦。
4.某电热器的电阻是50欧，当它的电阻丝通过的电流是4安时，100秒可产生的热量是 焦。
5.1千瓦时的电可供“P2 220—40”的电灯正常工作 小时。
6. 图1，电源电压保持不变，当开关S闭合时，电流表示数为3安，当S断开时，电压表的示数为4伏，R2消耗的功率为8瓦，则电阻R2 = 欧。
7.将电阻为R1的电热器与阻值R2 = 24欧的电阻串联后接在电压一定的电源两端。通电后电热器的实际功率为它额定功率的 ，电路中的电流为1安。若将电热器直接接到电源两端，电热器的功率恰为额定功率，则电源电压等于 伏。
8.电灯L跟电阻R串联后接到电压为10伏的电源上，电路接通后，100秒内电阻R上电流做的功是10焦。已知电灯L的额定功率是10瓦，电阻R的阻值是10欧，电灯的电阻不变，则电灯的额定电压是 伏。
二.选择题(28分)
9.如图2所示的电路中，当滑动变阻器滑片P向右滑动过程中（ ）
A.电流表示数变小，电压表V1示数变大
B.电压表V1示数不变，灯L亮暗不变
C.电压表V2示数不变，灯L亮暗不变
D.电压表V2示数变大，电流表示数变小
10.把标有“P2 220—40”的甲灯和标有“P2 220——25”的乙灯串联在家庭电路中，则 （ ）
A.甲.乙两盏灯的额定电压都变小
B.甲.乙两盏灯均不能正常发光，甲灯比乙灯亮些
C.甲.乙两盏灯均不能正常发光，乙灯比甲灯亮些
D.甲.乙两盏灯均不能正常发光，乙灯的实际电压比甲的大
11.分别标有“6V，2W”和“12V，8W”的两个灯泡，串联后接在电路中，为使其中一个恰能正常发光，加在电路两端的电压应是（ ）
A.6V B.12V C.18V D.24V
12.额定电压相同的甲.乙两灯，串联后接在某电路中，甲灯比乙灯亮，正列说法正确的是（ ）
A.甲灯的额定功率和实际功率都大 B.乙灯的额定功率和实际功率都大
C.甲灯的额定功率小，实际功率大 D.乙灯的额定功率小，实际功率大
13.某电路两端电压保持不变，若电路中只接一个电阻R1，电路中的电流为I，消耗的功率为P1，若在R1上并联一个电阻R2时，干路中的电流为2I，电路消耗的功率为P2，测P1:P2（ ）
A.1:2 B.2:1 C.3:1 D.1:3
14.将定值电阻R1单独接在电压不变的电源上，消耗的功率是20瓦，另一个定值电阻R2单独接在这个电源上消耗的功率是R1消耗功率的1.5倍，若将R1和R2串联接在这个电源上，则这个电阻消耗的总功率是（ ）
A.50瓦 B.25瓦 C.12瓦 D.10瓦
15.如图3，电源电压保持不变，当S1闭合，S2打开时，电流表的示数是I1，电阻R1的功率是P1，R1和R3消耗的功率之比是2:1；当S1打开，S2闭合时，电流表示数是I2，电阻R2的功率是P2，已知I1 : I2 = 2:3，则：（ ）
A.R2 : R3 = 2:1 B.R2 : R3 = 1:2
C.P1 : P2 = 8:9 D.P1 : P2 = 4:9
选择题答案卡
题号 9 10 11 12 13 14 15
答案
三.作图、实验题(用伏安法测电阻)：（共24分）
16．将图4中的电压表、电流表接入电路（5分）
17．在下面的方框内画出电路图（5分）
18．闭合开关时，滑片P应置于变阻器的 端。（填“左”或“右”）（3分）
19．开关闭合后，电流表、电压表示数如图5所示，由此可知，电路中的电流I = 安，电阻R = 欧。（6分）
电路图
20．请设计一个纪录该实验数据的表格(5分)
四.计算题(24分)
21.一个标有”220V 100W”字样的灯泡,
(1) 接在220V电压的电路上,它的电阻是多少?（4分）
(2) 接在110V的电路上时,它的实际功率是多少? （4分）
22.一个标有“6V 3W”字样的灯泡与滑动变阻器串联，若接在电源电压为12V的电路里，滑动变阻器调至多大时，才能使小灯泡正常发光？（6分）
23.如图6所示，当开关S接到a处时，电压为4伏，电流表示数为0.5安，灯泡正常发光。当开关S接到b处时，电压表示数为6.4伏，电流表示数为0.4安。设电源电压不变，求：
(1) 灯泡L的额定电功率？（5分）
(2)开关接到b处时，灯泡L的实际电功率？（5分）
英语试卷
（考试时间为100分钟，试卷满分为100分）
班级________ 学号_________ 姓名________ 分数________
第二部分 笔 试（40分）
五、语言知识运用（1）
（一）单项填空（共15分，每小题1分）
从下列各题中所给的四个选项中选择可以填入空白处的最佳选项。
21. Happy Teachers’ Day! Here is _______ card with our best wishes.
A. a
B. an
C. the
D. /
22. I’m sorry I’m late，because the traffic _______ bad.
A. is
B. are
C. am
D. be
23. –Do you like mooncakes?
–Yes. And I think the ________ with nuts are the nicest of all.
A. these
B. those
C. them
D. ones
24. Dolphins are ________ to people. If you fall into water，they may help you.
A. friendship
B. friendly
C. friends
D. friend
25. He is good at English and he can speak English very ________.
A. good
B. nice
C. well
D. fine
26. John’s family live ________ the countryside.
A. for
B. in
C. on
D. by
27. ________ people walk，Cody likes to follow them.
A. Because
B. Before
C. When
D. After
28. I think living in a town _______ quite interesting.
A. sounds
B. sound
C. sounded
D. is sounded
29. What is Tommy going to ________ about next time?
A. talks
B. talking
C. talk
D. talked
30. Keep your heart ________，you will find all the people are lovely and kind.
A. open
B. opened
C. opening
D. to open
31. Listen! Someone ________ next door.
A. sing
B. is singing
C. sings
D. is gong to sing
32. His name is Jack Black. What do you call him?
A. Mr Jack.
B. Mr Black.
C. Mrs Jack.
D. Mrs Black.
33. –What do you usually do on Saturday morning?
–I usually ________.
A. do lessons
B. begin lessons
C. study lessons
D. have lessons
34. He often gets ________ at 7:00 p.m. each day.
A. to home
B. at home
C. home
D. in home
35. They find it difficult to _________the difference between English and Chinese.
A. tell
B. speak
C. say
D. talk
（二）完形填空（共10分，每小题1分）
通读下面的短文，掌握其大意，然而从短文后各题所给的四个选项中选择能填入相应空白处的最佳选项。
Most people go to school 36 ecation. They learn many subjects just like English，maths，history. 37 go to school to learn a skill so that they can make a 38 . School ecation is very important and 39 . Yet， 40 one can learn 41 from school. A teacher can’t teach his students everything. The teacher’s job is to 42 his students 43 to learn. The teacher teaches them how to read and how to think. So the students 44 should learn much 45 outside school.
36. A. in B. of C. at D. for
37. A. Other B. The others C. Others D. The other
38. A. live B. living C. life D. lives
39. A. useful B. use C. uses D. use of
40. A. some B. any C. no D. only
41. A. something B. anything C. nothing D. everything
42. A. give B. tell C. show D. say
43. A. where B. how C. when D. why
44. A. they B. them C. themselves D. their
45. A. many B. much C. some D. more
六、阅读理解（共15分，每小题1分）
阅读下面A、B、C、D四篇短文。根据短文内容从每题所给的四个选项中选择最佳选项。
(A)
Water is very important to living things. Without water there can be no life on the earth. All animals and plants need water. We need water to drink，to cook our food and clean ourselves. Water is needed in offices，factories，and schools. Water is needed everywhere.
There is water in seas，rivers and lakes. Water is found almost everywhere. Even in the driest part of the world，there is some water in the air. You cannot see or feel it when it is a part of the air. The water in the seas，rivers and lakes is liquid(液体). The water in the air is a gas，and we call it water vapour(蒸汽).
Clouds are made of water. They may be made of very small drops of water. They may also be made of crystals(结晶体). Snow crystals are very，very small crystals of ice. Ice is frozen water. It is a solid(固体). There can be snow and ice everywhere in winter.
46. Where can we find water?
A. We can find water when it turns into vapour.
B. Water can be found almost everywhere.
C. We can see water in deserts here and there.
D. Water is only in seas and rivers.
47. We can drink water when it is _________.
A. liquid
B. a solid
C. in the air
D. turned into ice
48. Clouds are made of _________.
A. seas，rivers and lakes
B. blocks of ice
C. very small drops of water or snow crystals
D. water in its solid state
(B)
Mrs Jones gave music lessons at a school. She had a good voice and enjoyed singing，except that some of her high notes sounded like a gate that had been forgotten to oil. Mrs Jones knew that so well that she tried to practice these high notes if she was free. As she lived in a small house，she usually had to go for long walks along the country roads and practised high notes there. Every time she heard a car or a person coming along the road，she stopped and waited until she could no longer be heard before she started practicing again.
One afternoon，a car came up behind her so fast that she didn’t hear it until it was only few meters from her. She was singing some of her highest and most difficult notes at that time when the car passed. The driver stopped his car in front of her suddenly，jumped out and began to look at his car carefully. To his great surprise，he couldn’t find anything wrong with his car. He got back into the car and drove off.
49. Mrs Jones was __________.
A. a music teacher
B. an office worker
C. a school bus driver
D. a singer
50. If she heard a car or a person coming，she would __________.
A. go for a walk along the country road
B. stop singing and wait
C. keep on practicing those high notes
D. make a sound like a gate that had been forgotten to oil
51. It was difficult for the woman _________.
A. to sing lowest notes
B. to sing the highest notes
C. to have a good voice
D. enjoy singing
52. Why did the driver stop his car suddenly?
A. Because he drove too fast.
B. Because he wanted to say hello to Mrs Jones.
C. Because he enjoyed Mrs Jones’ voice.
D. Because he thought that his car was in trouble.
(C)
When you are reading something in English，you may often come across a new word. What’s the best way to know it?
You may look it up in the English-Chinese Dictionary. It will tell you a lot about the word: the pronunciation，the part of speech，the Chinese meaning and also how to use this word. But how can you know where the word is in thousands of English words? How to find it in the dictionary both quickly and correctly?
First，all the English words are arranged in the alphabetical order. In the dictionary you can first see the words beginning with the letter A，B，C，D，E…That means，if there are two words “desert” and “pull”，“desert” will be certainly before “pull”. Then if there are two words both beginning with the same letter，you may look at the second letter，then the third，the fourth，… For example，“pardon” is before “plough”，“judge” before “just” etc.
53. When you don’t know a word，the best way is _______.
A. to ask your teacher
B. to look it up in a dictionary
C. to think hard
D. to do nothing
54. When you look up a word in the English-Chinese Dictionary，you should understand not only its Chinese meaning，but also ______.
A. its pronunciation
B. its part of speech
C. the use of it
D. A，B and C
55. Here are four words，“blind”，“murder”，“monument” and “boyhood”. Their right order in the English-Chinese Dictionary is ________.
A. blind，boyhood，murder，monument
B. blind，boyhood，monument，murder
C. boyhood，blind，monument，murder
D. monument，murder，blind，boyhood
56. The English-Chinese Dictionary is ________.
A. useful in learning Chinese
B. our good friend in learning Chinese
C. our good friend in learning English
D. not useful in learning English
(D)
Some people like to fish. Some like to build things. Others like to paint. George Washington Carver liked to grow things. He was happy when he was with flowers and plants. He liked farming.
Farmers of the south were glad that George Washington Carver felt this way. Thanks to Mr Carver，they grew good crops. Once southern farmers only planted cotton. But George Washington Carver said to them，“Plant peanuts. They will make your land rich. Your other crops will grow better.” The farmers listened to him. They planted peanuts. Then they came to him again. Where could they sell thousands of peanuts?
Once again，George Washington Carver helped them. He found hundreds of ways for using peanuts. Butter and candy could be made from peanuts. Soap，oil，paint，and many other things would be made form peanuts，too. George Washington Carver was a black man. Today his work is known all over the world.
57. George Washington Carver liked to ________.
A. plant things
B. paint
C. fish
D. build things
58. Southern farmers liked Mr Carver because Mr Carver ________.
A. was a black man
B. was a farmer
C. helped them in farming
D. was happy when he was with flowers
59. From the story we can tell that _________.
A. Mr Carver is not well known now
B. southern farmers thanked Carver for cotton
C. southern farmers sold peanuts to Carver
D. George Washington Carver was a great scientist
60. The main idea of the whole story is that _________.
A. George Washington Carver helped the southern farmers
B. George Washington Carver is known as a black man
C. many things can be made from peanuts
D. planting peanuts can make land rich
第 II 卷
（非机读卷 共35分）
一、根据句意及首字母，补全单词。（共4分，每小题1分）
1. Her job is to sell clothes in the shopping center，she is a s_________.
2. English people’s family names come l__________.
3. All the students are out. N________ is at school.
4. They’re walking home after p________ oranges.
二、选用方框中词或词组的适当形式填空。（其中有两个是多余的）（共3分，每小题1分）
exciting，careful，top，celebrate，taste
1. The ______ of the mountain is a good place for seeing the sun rising.
2. The soup _________ so delicious! Would you like some?
3. He writes much _____________ than me.
三、语言知识运用（2）（共10分，每小题2分）
根据中文意思完成句子。
1．我很高兴你能来。
I’m __________________________________________.
2．谢谢你的卡片。
_____________________________________________your card.
3．火车站距离这条街有五公里远。
______________________________________ from the street.
4．对你来说按时到校很容易做到。
It is easy_____________________________________________.
5．同学们都认为他不会弹钢琴。
___________________________________________play the piano.
四、口语交际（共10分，每小题2分）
根据上下文的意思补全对话。在横线上写出所缺少的内容。
A: Hello. ____1____
B: Speaking.
A: Hi，David! This is John.
B: Hi，John. ____2____
A: We’re going to have a picnic this Saturday. ____3____
B: I’d love to. But I have to help mum with the housework.
A: What a pity! Are you free this Sunday?
B: Yes.
A: ____4____
B: That’s a good idea. I hear there is a good movie on show now.
A: ____5____
B: How about 6:00 p.m. at the gate of the cinema?
A: OK. See you then.
B. See you.
五、书面表达（共8分）
根据中文意思，写出意思连贯、符合逻辑、50字左右的短文。
金秋是收获的季节。进入初二以来你有了什么收获，对自己的下半学期和下半年以后有什么打算？请你用英语来谈一谈你的收获和打算。
______________________________________________________________________________________
______________________________________________________________________________________
______________________________________________________________________________________
______________________________________________________________________________________
______________________________________________________________________________________
______________________________________________________________________________________
❸ 初中计算题100道
38×99＋38 75× 299＋75 102×99＋102 39＋9×39
99×128 ＋128 27＋99×27 34＋199×34 35×99＋35
6.乘法分配律（三）：
125×（8＋80 ） （80＋4）×25 8×（125＋9） （20＋4）×25 32 ×（200＋3） （125＋17）×8
(100＋2)×99 102×（100－1） 25×(40＋4) （25＋100）×4 99×（100＋1） （125＋40）×8
（125＋25）×8 99 ×（100＋7） 8 ×(125＋7) (30＋25) ×4
7.乘法分配律（四）：
46×102 48×101 99×46 102×42 103×31 107×16 108×15 125×88
88×102 102×99 39×101 25×41 48×101 201 ×24 302×43 102×13
8.商不变的规律：
300÷25 4000÷125 240÷5 600÷25 3200÷50
400÷25 150÷25 800÷25 2000÷125 9000÷125
四、混合运算
672－672÷12×7 987÷（345－298）×65 210×[520÷(240－227)] 340－240÷20×5
30×(320－170)÷90 [458－(85＋28)]÷23 630×[840÷(240－212)] 408÷[512－(178＋283)]
864÷[(27－23)×12] (105×12－635)÷25 240－140÷5×3 360－260÷20×5
104×48＋272÷16 35＋65÷5－20 240＋180÷30×2 450÷30＋20×3
146－(34＋420÷70) 624÷[(27－14)×4] (77－21÷7)×691 (165－65÷5)×5
840÷[(120＋195)÷15] [557－(186＋26)]÷23 375÷（25－10）×15 （659－34）´（280¸40）
720¸［（12+24）´20］ 15×27-200÷8 （324-285）×12 ÷26 （160－48÷12）×4
336÷[（36－29）×6] 62×（300－145÷5） 35×（320－170）÷50 （36×54－984）÷24
150÷[90÷（67－52）] 659－34´（280¸40） 182÷[36÷（12＋6）] 640÷[（96-80）×4]
❹ 初中生练习题
关于启东中学作业本和典中点我用过，启东中学作业本题的难度主要在于教材中很多公式定理没有学，可以作为定理补充，学习新知识的一个抓手，典中点在于整体思想上和一些具体方法上的练习，以及热点题型的训练，建议你根据自身情况，两本都可以选，每一本上自己选择生僻的题型多练习。纯手打，望采纳。
❺ 求初中全册的练习题的书
我也读初中，成绩不错，你说的我都有所了解。轻巧夺冠太简单，《中学教材全解》和《教材完全解读》，《点拨》，《倍速学习法》都是很基础的，如果你成绩很好，就应该给自己一些挑战，建议《尖子生题库》很不错。如果你成绩不是非常拔尖 ，建议《经典学法频道》，也许能有所提高。
希望我的回答对你有所帮助，一起加油！
❻ 中学练习题~
1、-3KXY+1/3XY=0
K=1/9
2、解：设有X位成人观众。
50X+（200-X）*20=5770
X=59
答：有59位成人观众。
3、合作时间：（1-1/7.5*2）/（1/7.5+1/6）=22/9（小时）
前后共有多少小时是指一斑吧。
2+22/9=4又4/9（时）
答：略。
4、解：设一队速度为X千米/小时。
（2+2）*X+2（X+1）=230
X=38
38+1=39（千米/时）
答：一队速度38千米/时。二队速度39千米/时。
5、解：设十位数为X。
X+5+X=（10X+X+5）*1/7+6
14X+35=11X+47
X=4
个位数字：5+4=9
两位数：4*10+9=49
❼ 初中数学70,80分的学生做什么练习题比较合适
现在很多的同学数学的分数都不是很高,这拉低的整体的平均分,所以很多的学生都会是做很多的练习题来改善这种问题,那么初中数学练习题做的越多分数就会越高吗?
数学习题
在做初中数学练习题的时候,家长不可以让孩子做的过于多,需要给孩子一定的休息时间,以防止孩子出现过度劳累的情况,这样只会让分数出现下降并不会有上升的情况,所以只有详细的制定计划之后才可以在一定的程度上改善孩子的分数问题,还可以改善孩子的学习习惯,这对于孩子的以后有非常大的影响.
❽ 高中练习题有哪些
《典中点》，《高考题库》，《世纪金榜》。