初二下期英语阅读理解

❷ （人教版）初二下册英语 阅读理解、完形填空练习题。从现在开始，每天做一篇的。

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❸ 请提供一些人教版初二下期的英语阅读题!急!!

Dear editor (编辑) ，
I live in a beautiful city . Many visitors come to my city . there are so many colorful peacocks (孔雀) here .
The peacocks mostly live on the grass land of Dongfeng Square
They are given food freely by visitors . They usually throw food to them , and don’t think about at all whether the food is right or not . Some of the peacocks became ill , some even died after eating the bad food given by the visitors.
I’m sure most of the visitors who throw food to the peacocks really like the birds , but don’t realize (意识到) that they may be doing them harm (伤害).
The visitors should be told that what have done is very harmful to the birds , and this kind of thing must be stopped from happening .
Perhaps we can build some small shops beside Dongfeng Square to sell peacock food . For us every person , it’s our ty to give more love to these beautiful birds and to look after them carefully.
Yours,
Sun Yan
()6.Many visitors come to the writer’s city to __________.
A. do some shopping B. see beautiful peacocks
C. play on Dongfeng square D. eat nice food
()7.Some peacocks became ill and died because some visitors ______;
A. did’t give them any food B. gave them too much food
C. threw them some bad food D. loved them and played with them
()8.Some shops can be built beside Dongfeng Square so that they may _____________.
A.sell food for visitors B. sell food for peacocks
C.make the square more beautiful D.have the beautiful birds
()9.From the passage we know people should __________.
A. live and play with the birds
B. stop the birds from eating too much
C. give right food to the birds
D. give more food to the birds
()10.We can guess the writer of the letter, Sun Yan , may be a _____.
A. visitor B. shopkeeper C.square keeper D. student
6-10：B C B C D
（3）
Every town in the United States has a post office . Some are very small , and you may also find them in the corner of a shop . Others are larger buildings . They are open five days a week and on Saturday mornings . From Monday through Friday they are usually open from 8:30 to 4:30 .
If you know how much the postage (邮资) is for your letter , you can buy stamps at any window. In some post offices you can buy stamps from machines . Stamps are sold many different prices , from one cent (美分) to many dollars . If you are not sure how much postage is for you letter , you may ask the man or the woman in the post office for help . he or she will give you the stamps you need . If you are sending your letter far away , you should use airmail envelopes (航空信封) . Remember that postage will be more expensive for a letter to be sent outside the country.
At a post office you can also buy postcards . A postcard is cheaper than a letter . Usually the price of postage for a postcard is about half that of a letter . The postcards that you buy at a post office do not have pictures . However ,also they are not to be sent outside the country .
Letters are an easy and cheap way to keep in touch with people in many different countries .
()11.The passage tell us that we can find ________ easily in the United States of America.
A. post office s B.large buildings
C.small shops D.different banks
()12.The post offices in the United States are open _________.
A.seven hours a day B.six hours a day
C.five hours a day D.eight hours a day
()13.If you are not sure how much postage is for your letter ,you can____.
A. go and buy stamps from the machine in the post officesend a cheap postcard instead of your letter
B. get in touch with somebody you know in the post office
C.ask the man or the woman in the post office for help
()14.The price of postage for ________ is more expensive.
A.a beautiful postcard B.a letter written on envelope
C.a letter by airmail D.a postcard with pictures
()15.The passage tells us something about ________ in the USA
A.the post B.the postage C.letters D.postcards
11-15 A D D C A
（4）
Long, long ago there was a very foolish thief. Do you know what he did one day? When he wanted to steal(偷) the bell on his neighbour’s door, he walked up to the door, took hold of(抓住) the bell and pulled hard. The bell made a very loud noise. The thief was afraid and went home.
Then he sat down to think, “I must do something about the noise,” he said. He thought and thought. At last he had an idea. “Ah, I’ll put some cotton in my ears. Then I won’t be able to hear the noise.” The next day he went to the door of his neighbour, and took hold of the bell. This time he pulled even harder. The bell rang loudly, but the thief did not hear anything. With another hard pull he got the bell out. Just then the neighbour came running out.
“Steal my bell? I’ll teach you a lesson(教训),” the angry man shouted. And he hit the thief on the nose.
The foolish thief did not know how the neighbour found out he was stealing the bell. “Why did he come out just then?” he wondered (感到疑惑).
( )16. The thief was trying to get .
A. his neighbour B. his neighbour’s doorbell
C. some cotton D. a door with a bell on it
( )17. The thief put some cotton in his ears. He thought it would be for him to steal the doorbell.
A. safe B. difficult C. dangerous D. easy
( )18. The neighbour ran out probably(很可能) because .
A. he knew his doorbell was being stolen
B. he thought someone was eager (渴望的) to visit him
C. he realized (意识到) something strange happened
D. Both B and C
( )19. The neighbour hit the thief to .
A. give him lessons B. punish (惩罚) him for stealing
C. help him with the bell D. be his teacher
( )20. Which of the following is TRUE?
A. The thief understood why he was hit on the nose.
B. The thief knew why the neighbour came out.
C. The thief thought the neighbour couldn’t hear the noise the bell made.
D. The thief didn’t want to know why the neighbour ran out.
16-20 B A D B C
（5）
A farmer was put in prison(监狱). One day, he got a letter from his wife.
“I am worried about out farm,” she wrote. “It’s time to plant potatoes ,
but I can’t do all the digging(挖) by myself.”
The farmer thought over and then had an idea. He wrote to his wife,“Don’t dig
the fields. This id where my gold(金子) is. Don’t plant potatoes until I comehome.
A few days later, the farmer got anther letter from his wife. It said, “Two days
ago, about ten prison guards(监狱看守) came to our fields. It looked as if they were looking for something. They have g our field.”
The farmer wrote to his wife at once. “Now you can plant our potatoes,” he wrote.
( )21.The farmer was put in prison ________.
A. because he had done something wrong
B. because he had a lot of gold in the fields
C. The writer didn’t say anything about why the farmer was put in prison
D. For nothing
( )22.The farmer’s wife was much worried about _____ .
A. her husband B. their farm C. planting potatoes D. herself
( )23.The farmer told his wife __ first.
A. not to dig the fields B. to dig the fields
C. to ask the prison guards for help D. to find the gold in the fields
( )24.Why did the prison guards dig the farmer’s fields ?________.
A. They wanted to help the farmer
B. Their leader ordered them to do so
C. The farmer asked them to do so
D. They wanted to find out the gold
( )25.Why did the farmer ask his wife to plant potatoes at once ? Because _____.
A. their fields had been g
B. the gold was found out
C. the prison guards asked him to do so
D. the prison guards were digging the fields
21—25 C B A D A
（6）
An owl is a bird with very large eyes. Those eyes make the owl look clever. The owl can not move its eyes freely as people can. It can only look straight ahead (朝前). If it wants to look at both sides, it must turn its neck.
Owls see better at night than ring the day. At night they look for food. They eat mice and insects.
Owls make a strange noise because the owls sleep most of the day. They usually give their cries at night. The cry sounds like “Whoo! Whoo!”. This strange sound sometimes frightens people at night.
26. An owl looks clever because it can look straight ahead.
27. An owl looks for food at night because it sees better at night than ring the day.
28. An owl lives on all kinds of birds.
29. The cry of an owl is frightening.
30. Man must not kill owls because they are helpful to people.
26-30 B A B A A
（7）
Coffee has become the most popular American drink. Today people in the United States drink more coffee than people in any of the other countries. People drink coffee at breakfast, at lunch, at dinner and between meals. They drink hot coffee or coffee with ice in it. They drink it at work and at home. They eat coffee ice-cream and coffee candy. Coffee is black and very strong. Different people like to drink it in different ways. Some people like coffee with cream or sugar in it. Other people like coffee with both cream and sugar in it. In all ways it is served. Coffee has become an international drink.
31. Coffee is an ____________ drink.
A . interesting B. international C. ice-cream D. American
32. Different people like to drink coffee ____________.
A. at work or at home B. in different ways C. with cream or sugar D. between meals
33. Today Americans drink ____________ coffee than people in any of the other countries.
A. as much as B. less C. more D. most
34. “Coffee is black and very strong.” The word STRONG here means ____________.
A.坚固的 B.淡的 C.清的 D.浓的
35. ____________ is the most popular American drink.
A. Black tea B. Coffee C. Water with ice D. Whisky
31-35 B B C D B
（8）
Computers are useful machines. They can help people a lot in their everyday life. For example, they can help people save much time, and they can help people work out many problems they can’t do easily. Our country asks everyone to learn to use computers except the old people.
Today more and more families own computers. Parents buy computers for their children.
They hope computers can help them improve (提高) their studies in school. Yet many of the children use computers to play games, to watch video or to sing Karaoke, instead of studying. So many teachers and parents complain (抱怨) that computers can not help children to study but make them fall behind. So computers are locked by parents in the boxes.
In some other countries, even some scientists hate computers. They say computers let millions of people lost their jobs or bring them a lot of trouble.
Will computers really bring trouble to people or can they bring people happiness? It will be decided by people themselves.
36. Why do we say the computer is a useful machine? Because _______________.
A. our country asks us to learn it
B. it can help us a lot
C. we can use it to play games
D． it can help us to find jobs
37. What do many teachers and parents complain about? _______________.
A. Their students and children use computers to play games.
B. Computers let them lost their jobs.
C. Computers make the students and children fall behind.
D. Computers bring people a lot of trouble.
38. In this passage we know computers _______________.
A. also bring us trouble
B. bring us happiness only
C. are hated by people
D. are bad for people’s health
39. Can computers really help children to study? _______________.
A. Yes, they can. B. It’s hard to say C. No, they can’t. D. Of course not.
40. How do you understand the last sentence of this passage? I think it means _______.
A. computers are used by people
B. people can live well without computers
C. one must decide how to use computers
D. computers are strange machines
36-40 B C A A C
（9）
Once upon a time there lived an old man. He had three sons. One day, he called them together and said, "Sons, I will die soon. To my oldest son I give half my camels, to my second, one-third(三分之一), and to my youngest, one-ninth (九分之一)." Soon after that he died.
Now, the old man had seventeen camels, and the three brothers didn't know how to do as their father said. They thought a long time about the problem, and it seemed that they must either kill some of the camels and cut them into pieces, or disobey their father. At last they went to their father's old friend and asked for his advice. As soon as he heard their story, he said, "I will help you. I was a good friend of your father's. I am old. I have only one camel, but take it-it is yours."
The three sons thanked the old man and took his camel. Now they found it was easy to do as their father wished, The oldest took half- that was nine camels; the second took one-third, that was six; and the youngest took one-ninth, that was two.
After each had got his camels, they found that there was still a camel there. So, to show their thanks to their father's friend, they gave the camel back to him
41. "Once upon a time" means " ________".
A. long long ago B. not very long ago
C. at once D. sometimes
42. The meaning of "disobey" in the second paragraph is" ________".
A. 服从 B. 违背 C. 听从 D. 嘲笑
43. The meaning of "asked for his advice" in the second paragraph is " ________".
A. 向他请教 B. 问他数量 C. 批评他 D. 劝告他
44. The second old man ________the three brothers.
A. was good to B. was not good to C. didn't like D. cheated(哄骗)
45. Both the two old men in the story were ________.
A. foolish B. clever C. poor D. rich
41-45 A B A A B
（10）
Tom lived by himself a long way from town. He hardly went to town, but one day he went into town to buy a few things. After he bought them, he went into a restaurant and sat down at a table. When he looked around, he saw some old people put glasses on before reading their newspapers. So after lunch he decided to go to a shop to buy himself one pair, too. He walked along the road, and soon found a shop.
The man in the shop let him try on a lot of glasses, but Tom always said, "No, I can't read with these."
The man became puzzled (迷惑的) , and he said, "Excuse me, but can you read?"
"No, of course I can't!" Tom said angrily. "If I could read before, do you think I would come here to buy your glasses?"
46. Tom lived ______.
A. with his family B. near town C. in the country D. in town
47. Tom didn't go to town______.
A. never B. often C. sometimes D. sometime
48. Why did Tom decide to buy a pair of glasses?
A. Because he thought if he bought them, he could read.
B. Because they were very bright.
C. Because they were cheap.
D. Because he could read newspaper.
49. Tom went to the shop to ______.
A. have a rest B. have dinner C. wear glasses D. buy a pair of glasses
46-49 C B A D
(11)
We know mosquitoes very well. Mosquitoes fly everywhere. They can be found almost all over the world, and there are more than 2,500 kinds of them.
No one likes the mosquito. But the mosquito may decide if she loves you. She? Yes, she. The male mosquito doesn’t bite! Only the female mosquito bites because she needs blood to lay eggs. She is always looking for things or people she wants to bite. If she likes what she finds, she bites. But if she doesn’t like your blood, she will turn to someone else for more delicious blood. Next time a mosquito bites you, just remember you are chosen. You’re different from the others!
If the mosquito likes you, she lands on your body without letting you know. She bites you so quickly and quietly that you may not feel anything different. After she bites, you will have an itch(痒) on your body because she puts something from her mouth together with your blood. When the itch begins, she has flown away.
And then what happens? Well, after her delicious dinner, the mosquito feels tired. She wants to find a place to have a good rest. There, in a tree or on a wall, she begins to lay eggs, hundreds of eggs.
( )51.All the people don’t like mosquitoes.
( )52.All mosquitoes like to bite people for blood.
( )53.If a mosquito wants to bite you, it means she is very tired.
( )54.The mosquito bites you too quickly and quietly to let you know.
( )55.The itch begins after the mosquito flies away.
51-55 FFFTT
(12)
Do you know why different animals or pests(昆虫) have their special colours? Colours in them seem to be used mainly to protect themselves.
Some birds like eating locusts(蝗虫), but birds cannot easily catch them. Why? It is because locusts change their colours together with the change of the colours of crops(庄稼). When crops are green, locusts look green. But as the harvest (收获)time comes, locusts change to the same brown colour as crops have. Some other pests with different colours from plants are easily found and eaten by others. So they have to hide themselves for lives and appear only at night.
If you study the animal life, you’ll find the main use of colouring is to protect themselves. Bears, lions and other animals move quietly through forests. They cannot be easily seen by hunters. This is because they have the colours much like the trees.
Have you ever found an even more strange act? A kind of fish in the sea can send out a kind of very black liquid(液体) when it faces danger. While the liquid spreads over(散开), its enemies(敌人) cannot find it. And it immediately swims away. So it has lived up to now though it is not strong at all.
( )56.From the passage we learn that locusts________.
A. are small animals
B. are easily found by birds
C. are dangerous to their enemies
D. change their colours to protect themselves
( )57.How can pests with different colours from plants keep out of danger?
A. They run away quickly.
B. They have the colours much like their enemies.
C. They hide themselves by day and appear at night.
D. They have to move quietly.
( )58.Bears and lions can keep safe because________.
A. they have the colours much like the trees
B. they move quietly
C. they like brown and grey colours
D. they live in forests
( )59.Why can the kind of fish live up to now?
A. Because it is very big and strong.
Because the liquid it sends out can help it escape from its enemies.
B. Because the liquid it sends out can kill its enemies.
C. Because it swims faster than any other fish.
( )60.Which is the best title for this passage?
A. The Change of Colours for Animals and Pests.
B. Colours of Different Animals and pests.
C. The Main Use of Colours for Animals and Pests.
D. Some Animals and Pests.
56-60 D C A B C

❹ 求八年级下册英语阅读理解15篇帮帮忙

【1】In almost every big university in the U.S.A, football is a favorite sport. American football is not like soccer. Players sometimes kick (踢)the ball, but they also throw(丢,投) the ball and run with it. They try to take it to the other end of the field. They have four chances to move the ball ten yeards(码). They can carry it or throw it. If they move it to the other end of the field, They have got six points. This is called a touch-down.(底线得分)

It is difficult to move the ball. Eleven men on the team try to stop the man who has the ball. If the man does not move the ball ten yards, his team kicks the ball to the other team.

Every university wants its team to win. A lot of people come to watch. They all yell(喊加油) for their favorite team. Young men and women called cheerleaders(拉拉队长) to come to help the people to yell more.

Every team plays ten or eleven games each season which begins in September and ends in November. If a team is very good, it may play another game after the season ends. The best teams play again on January 1, the first day of the new year. Many people go to see these games and many others watch them on TV.

( )1.In American football players can ______

A.only kick the ball B.only throw the ball C.only carry the ball D.kick,throw and carry the ball

( )2.If a team wants to get points, it has to move the ball ______

A. 10 yards B. 40 yards C. away from its own end D.to the other end

( )3.Most teams play games in _______.

A. spring B.summer C.autumn D.winter

( )4.When do the best team play again? _______

A At Christmas B.Before the season ends C.On New Year’s Day D.On the last day of the season

( )5.Which is the best title for the passage? ______

A.American Football B.Most People Like Football

C. Many People Enjoy Watching Football Games D.American Football Is Not Like Soccer

【2】Korean culture is really exciting right now. The Korean Wave is sweeping Asian countries including China. Young people are going crazy about Korean TV dramas, Korean pop songs, taekwondo and the Korean language.

The Korean Wave started a few years ago with the TV series “Winter Sonata”. This love story is still popular. People, especially girls, like the beautiful story and handsome actors like Bae Yong Jun (裴勇俊).In the music world, Korean girls are making themselves heard in China. You can often find big Korean names like Baby Vox, S. E. S and Finkle at the top of the Chinese music charts (排行榜).

The Korean Wave has also made young people want to try the clothes and hairstyles of pop stars, too. Not only that. Now some girls in China are having plastic surgery (整容) to change the way they look. People say some beautiful Korean stars have had plastic surgery. These stars don’t make plastic surgery look shameful (丢面子的).

Are all the faces of beautiful Korean girls not real? Find out for yourself when you next visit South Korea.

（ ）1What does the Korea Wave refer to? It refers to ____.
A. Korean TV dramas B. Korean culture C. Korean language D. Korean actors

（ ）2When did the Korean Wave start? It started with ____.
A. the Korean pop songs B. Taekwondo C. the TV series “Winter Sonata” D. the Korean food

( )3.Who is the famous actor in Korean dramas?
A. Bae Yong Jun B. Baby Vox C. S. E. S D. Finkle

( )4.Korean stars often change their looks by ____.
A. singing pop songs B.acting in TV dramas C.trying different food D. having plastic surgery

( )5.Which of the following is NOT true according to the passage?
A. Winter Sonata tells a very famous love story.

B. Young people like Korean pop stars’ clothes and hairstyles.
C. Chinese girls also want to try plastic surgery.
D. Korean pop stars think plastic surgery is shameful.

【3】Do you remember when your grandma told you the story of Snow White? Ah, the happy days of childhood!

But did you know that Snow White comes from Germany? It’s just one story from the 209 in Grimm’s Fairy Tales (《格林童话》). The Grimm brothers started to collect fairy tales in 1806. Their first book came out in 1812.

Why are German fairy tales so interesting? Maybe it’s because they come from a great place famous for its stories – the Black Forest.

The Black Forest is in southwest Germany. It’s the largest forest in the country – and one of the most beautiful. It’s famous for its trees and lovely views. There are valleys and waterfalls (瀑布) there. It’s a good place to start a story.

Don’t forget to bring something back if you visit. People there are good at making clocks, musical instruments and watches.

根据短文，选择最佳答案：

( )1.From the story, we know that ____ is the hometown of Snow White.
A. England B. Japan C. America D. Germany

( )2.How long had the Grimm brothers been collecting stories?
A. Four years B. Five years C. Six years D. Seven years

( )3.From the story, we cannot guess that the Black Forest is very ____.
A. large B. beautiful C. boring D. famous

( )4.The story mainly tells us ____.
A. who wrote the story of Snow White B. some things about Black Forest
C. people should visit Germany D. Snow White is a very famous fairy tale.【4】There are four people in my family. My grandpa,father,mother and I. My father and mother have a clothing shop. There are many beautiful clothes for women and children. Are there anything for men? Yes,there are hats,shoes,socks,pants and sweaters for them. People like our shop. They can get clothing at a very good price.
根据短文,判断正(T)误(F).
( )1.This is a family of four.
( )2.My grandpa has a clothing shop.
( )3.The clothing in the shop is for all kinds of people.
( )4.There are soccers on sale in their shop.
( )5.People like to buy clothes in their shop.
（译文：我家有4个人，我的爷爷，爸爸，妈妈还有我。我的爸爸妈妈开了一家服装店。店里有很多适合女性和儿童的漂亮服装。那么店里有没有适合男士的衣服呢？答案是：有的。有许多适合男士的帽子，鞋子，袜子，裤子和毛衣。人们都喜欢我家的店。他们可以用非常合适的价格买到衣服。 答案：对 错 对 错 对）【5】George lives in a small city in England.He always spends his holiday in England,but he changes his mind this year.
All his friends go to Spain for their holidays and they like it very much.So this year George is going there,too.First he goes
to Mardrid and lives in a hotel for a few days.In the moring he goes out for a walk.In England people drive on the left,but here they drive on the right.George forgets about this,and while he is
crossing a busy street,a bike knocks him down.George lies on the ground for a few seconds and then he sits up and say,“Where am I?”
Just then a man selling maps goes past him.When he hears what
George says,he says to him at once,“Map of this city,sir?”

根据短文，判断正（T）误(F)。
( )1. George has many friends in Spain.
( )2. George wants to visit Spain because his friends say Spain is a good place.
( )3. The traffic rules in England are different from those in Spain.
( )4. A man riding a bike knocks down George when he is crossing a busy steert.
( )5. George wants to buy a map of Mardrid when he say,“Where an I?” （译文：乔治住在英国的一个小城里。他总是在英国度过他的假期，但是今年他改变了主意。他所有的朋友都去西班牙度假了，并且他们很喜欢那里。所以今年乔治也要去那。首先，他去了马德里，住在一个酒店里几天。一个早晨，他去户外散步，在英国，人们开车靠左侧行驶，但在这他们靠右侧。乔治忘了这一点，当他要横穿川流不息的马路时，一个自行车把他撞倒了。乔治躺在地上几秒钟，然后站起来说：“我在哪”
就在这时，一个卖地图的男人遇见了他，当他听到乔治说的话时，他立刻跟他说，“这个城市的地图，先生” 答案：错错对对错）

❺ 人教版八年级下册英语阅读题

文献：http://wenku..com/link?url=-AUR42L_7B4ywrmUF7mZo6J16b-_

❻ 初二下英语 阅读理解

1，D从全文看是家长对孩子压力太大使孩子不开心
2，B
3,D两点都应包括
4，A

❼ 人教版初二下学期英语阅读理解题

1. because she got a cold。2.because she wanted to get on ahead of the other passengers。3.they told her to wait for her turn later。4.She didn't listen to them.she tried to open the door of the taxi then.5不会。

   见笑版了权

❽ 初二下册英语阅读理解题目

我写出来的答案是ADDCA

❾ 求50道八年级下册数学题、30道初二下期物理题和初二下期英语阅读理解完形填空各30篇

http://wenku..com/view/7aa1d108bb68a98271fefa65.htmlhttp://wenku..com/view/98bad323dd36a32d73758102.htmlhttp://wenku..com/view/8252086c1eb91a37f1115c15.html（每题只有一个正确答案，将正确答案的序号填在题后的括号内）1． 小明同学在学习了初二物理后，获得了以下的一些认识，其中正确的是( )
A.所谓的力就是物体间的一种相互作用
B.要发生相互作用的物体必须是直接接触的
C.相互作用的力就是一对平衡力
D.物体在平衡力的作用下，作匀速直线运动，所以力是维持物体运动的原因
2． 关于力的作用效果，下面正确的说法是（ ）A.力是使物体保持静止状态的原因 B.力是维持物体运动的原因C.力是改变物体运动状态的原因 D.物体受力时，才会运动
3． 汽车在水平公路上做匀速直线运动，这是因为（ ） A.汽车的惯性等于所受的阻力 B.汽车的牵引力等于所受的阻力 C.汽车的牵引力大于所受的阻力 D.汽车的牵引力等于所受的重力
4． 有关重力产生的原因说法正确的是（ ）
A．物体只有接触地球，才被地球吸引．
B．地球吸引物体，物体不吸引地球．
C.地球吸引物体的力大于物体吸引地球的力．
D．地球吸引近地面的物体，物体也吸引地球．
5． 铅球被推出后，不计空气阻力，在空中飞行时（ ）
A．只受到重力作用． B．受到重力和推力的共同作用．
C．只受到推力作用． D．不受任何力的作用．
6．关于力，下列说法不正确的是（ ）
A．两个物体只要相接触，就一定有压力的作用
B．离开了物体，就没有相互作用的力
C．力的作用效果是使物体发生形变或改变物体的运动状态
D．力的作用效果不仅与力的大小有关，还与力的方向和力的作用点有关
7． 一个成年人受到的重力大约是( )
A．6N B．60N C．600N D．6000N
8． 以下措施中用来减小摩擦的是( )
A．上紧缝纫机的皮带 B.在笔头上装上小钢珠，制成圆珠笔
C．在纲丝钳口刻上花纹 D.在乒乓球拍上粘上带颗粒的胶皮
9. 如图所示是阿基米德原理的验证过程的实验，从实验中可以验证的规律是（ ）
A.浮力与物体的体积和形状及物体的重力三者有关
B.浮力与物体排开的液体受到的重力有关C.浮力与物体自身的重力也有关
D.与物体在液体中的深度有关，因为液体对物体产生的力是由压力差所造成的。
10.气球可以带重物在空中飞行的原因是（ ）
A.由于气球中气体的密度远远小于空气的密度，只要气球中充满这种气体，它都可以上升
B.只有在气球排开的气体的重力大于气球及它所带重物的重力才能上升
C.气球只要充足气总可以上升
D.气球上升与充入气体的密度无关
11．下列情况下，物体受平衡力作用的是（ ）
A．苹果从树上落下来． B．汽车在弯道上匀速转弯．
C．物体在斜坡上匀速直线滑下． D．向上抛出的石块
12．一个上、下底面材料相同的圆台型物体置于水平地面上，按图a所示放置时，匀速将物体拉动的水平力大小是Fa；按图b所示放置时，匀速将物体拉动的水平力大小是Fb．则（ ）
A．Fa＞Fb B．Fa＜Fb．
C．Fa=Fb． D．不知速度，无法判断．
13．如图所示，能使物体做匀速直线运动的受力示意图是（ ）

14．某车在一条长直水泥路面上先以10m／s的速度匀速行驶了2min，后以8m／s的速度匀速行驶了5min，则该车在两段运动时间内所受路面对车的摩擦力大小之比是 （ ）
A．l：1 B．5：4 C．l：2 D．都不对．
15．某人用力推置于水平地面的一只箱子，但箱子没有动，这是因为（ ）
A．推力小于地面给箱子的摩擦力． B．箱子惯性太大了．
C．箱子受地球引力大于推力． D．推力与地面给箱子的摩擦力相互平衡．
16．如图所示，用水平力F=50N将m=2kg的物体压在竖直墙面上静止，则墙面给物体的摩擦力是(g=10N／kg) （ ）
A．50N，竖直向上 B．20N，竖直向上
C．20N，竖直向下 D．70N，竖直向上
17．两个完全相同的容器中分别盛有质量相等的水和酒精，如图所示．下列说法正确的是（ ）
A．两容器底受到压力相等
B．液面下深度相同的两处a、b所受液体压强相等
C．盛水容器底部受到压强较大
D．盛水容器底部受到压强较小
18．如图所示，玻璃筒下端扎有橡皮膜，内放有一定量的水后，橡皮膜向外凸起．当将玻璃管慢慢放入盛有酒精的烧杯中使橡皮膜恢复原状，则（ ）
A．水面比酒精液面要高一点 B．水面比酒精液面要低一点
C．水面与酒精液面相平 D．三种现象都有可能．
19．如图 ，A、B是两个在上面开口容积相同的杯子，其重力都是2N，两杯中装满水时，深度相同都为h，下面正确的说法是（ ）A.B杯底部所受的压强比A杯大B.A杯底部所受的压强比B杯大
C.由于底面积不同，A杯底部所受到的压力一定大于B杯底部所受的压力
D.两者底部所受到的压力相同，因为液体的重力都是一样的，与底面积无关
二、填空题（每空1分，共25分）
20． 在水平地面上放一个重力是50N的物体，用2N的水平拉力，使物体在水平面上作匀速直线运动，则物体受到的摩擦力是________。
21． 滑旱冰的人和地面的摩擦是_______摩擦，转笔刀转孔与铅笔间的摩擦是_______摩擦。
22． 放在水中的木块正在上浮，在它露出水面之前受到的浮力______。露出水面以后受到的浮力______。（填“变大”，“变小”或“不变”）
23． 金属块重10N，挂在弹簧测力计上，当它全部放在水中时，弹簧测力计的读数为8N，如图所示，此时金属块受到的浮力是_____N。如金属块有一半体积露出水面,弹簧测力计上的读数应该_____N。
24. 如图所示三个体积相同的实心球体在液体中静止，那么________球所受到的浮力最小，与液体密度相同的是______球，三球中密度最小的是_________球。
25． 物体刚脱离正在上升的气球时，它的运动方向是______，这是由于______的缘故．物体最终将落回地面，这是由于物体______的缘故．
26． 吊车以lm／s速度匀速提起重2000N的重物，则钢索拉力是______N．当吊车以2m／s速度匀速提起重物时，钢索拉力将______2000N（填大于、等于、小于）．若提升过程中，钢索拉力变为1800N，则重物提升速度将______（填变大、变小、不变）．
27．收音机旋钮上刻有花纹是用______ ___来______摩擦力；皮带传动时将皮带拉紧是用__ _ ___来______摩擦力．
28．质量为300g的水倒入底面积为20cm2的容器中，水深20cm，容器置于水平地面，如图所示．不计容器自身质量，则水对容器底的压强是______Pa；容器对地面的压强是______Pa．(g=10N／kg)
29．建筑工人常用重垂线检查墙壁 ，重垂线是利用 的原理做成的。
30．一个圆柱形容器里装满水，若把一木块放入水中，则水对杯底的压强将_____________(填 “变大”，“变小”或“不变”)

三、计算题（每题5分，共15分）
31．如图所示，将一个不漏气的薄塑料袋平放在桌面上，一根饮料吸管插在袋口边缘，把袋口折几折后用胶带封住，使塑料袋口不漏气。将两块边长分别为6cm、3cm的正方形硬纸板(硬纸板质量不计)相隔一定距离平放在塑料袋上，在大纸板上放两个一元的硬币，在小纸板上放一个一元的硬币，然后通过吸管慢慢的向袋里吹气，通过计算来说明。（1）哪一个纸板会首先被塑袋“抬”起来?（2）若在大纸板上放四个—元的硬币，在小纸板上放几个一元的硬币，可使两纸板同时被“抬”起来?
一玻璃球挂弹簧测力计下，在空气中称其重力为4.41N，将它浸没水中称弹簧测力计的示数为2.94N，将它浸没在石油中称弹簧测力计的示数为3.30N，求玻璃球和石油的密度。
33. 质量为8t的卡车，在水平公路上匀速行驶时受到摩擦阻力是车重的0．02倍，求卡车行驶时，发动机对卡车的牵引力是多大？(g=10N／kg)

参考答案:
一、选择题
1.A 2.C 3.B 4.D 5.A 6.A 7.C 8.B 9.B 10.B 11.C 12.C 13.D 14.A 15.D 16.B 17.A 18.B 19.C
二、填空题
1.20N 2.滑动 滑动 3.不变 ,变小 4. 2N,9N 5. A B A 6.竖直向上
惯性 重力 7.重力 支持力 平衡力 地球 桌面 8.2000N 等于 变小
9. 减小 增大粗糙程度 增大 增大压力 增大 10.400N 2000Pa 3N 1500Pa
11. 是否竖直 12.重力的方向总是竖直向下 12.不变
13.液体内部有压强 高度差 液体内部的压强随深度的增加而增大
三、计算题
1. 3.2×106N 2. 3×103Kg/m3 0.755×103Kg/

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