初二下期英語閱讀理解

❷ （人教版）初二下冊英語 閱讀理解、完形填空練習題。從現在開始，每天做一篇的。

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❸ 請提供一些人教版初二下期的英語閱讀題!急!!

Dear editor (編輯) ，
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 (意識到) that they may be doing them harm (傷害).
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 (郵資) 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(教訓),」 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 (意識到) something strange happened
D. Both B and C
( )19. The neighbour hit the thief to .
A. give him lessons B. punish (懲罰) 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(監獄). 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(監獄看守) 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.堅固的 B.淡的 C.清的 D.濃的
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. 服從 B. 違背 C. 聽從 D. 嘲笑
43. The meaning of "asked for his advice" in the second paragraph is " ________".
A. 向他請教 B. 問他數量 C. 批評他 D. 勸告他
44. The second old man ________the three brothers.
A. was good to B. was not good to C. didn't like D. cheated(哄騙)
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(癢) 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(昆蟲) have their special colours? Colours in them seem to be used mainly to protect themselves.
Some birds like eating locusts(蝗蟲), but birds cannot easily catch them. Why? It is because locusts change their colours together with the change of the colours of crops(莊稼). When crops are green, locusts look green. But as the harvest (收獲)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(液體) when it faces danger. While the liquid spreads over(散開), its enemies(敵人) 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 求八年級下冊英語閱讀理解15篇幫幫忙

【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(丟,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(碼). 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.(底線得分)

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(拉拉隊長) 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 (丟面子的).

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 (《格林童話》). 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.

根據短文，選擇最佳答案：

( )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.
根據短文,判斷正(T)誤(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.
（譯文：我家有4個人，我的爺爺，爸爸，媽媽還有我。我的爸爸媽媽開了一家服裝店。店裡有很多適合女性和兒童的漂亮服裝。那麼店裡有沒有適合男士的衣服呢？答案是：有的。有許多適合男士的帽子，鞋子，襪子，褲子和毛衣。人們都喜歡我家的店。他們可以用非常合適的價格買到衣服。 答案：對 錯 對 錯 對）【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?」

根據短文，判斷正（T）誤(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?」 （譯文：喬治住在英國的一個小城裡。他總是在英國度過他的假期，但是今年他改變了主意。他所有的朋友都去西班牙度假了，並且他們很喜歡那裡。所以今年喬治也要去那。首先，他去了馬德里，住在一個酒店裡幾天。一個早晨，他去戶外散步，在英國，人們開車靠左側行駛，但在這他們靠右側。喬治忘了這一點，當他要橫穿川流不息的馬路時，一個自行車把他撞倒了。喬治躺在地上幾秒鍾，然後站起來說：「我在哪」
就在這時，一個賣地圖的男人遇見了他，當他聽到喬治說的話時，他立刻跟他說，「這個城市的地圖，先生」 答案：錯錯對對錯）

❺ 人教版八年級下冊英語閱讀題

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

❻ 初二下英語 閱讀理解

1，D從全文看是家長對孩子壓力太大使孩子不開心
2，B
3,D兩點都應包括
4，A

❼ 人教版初二下學期英語閱讀理解題

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不會。

   見笑版了權

❽ 初二下冊英語閱讀理解題目

我寫出來的答案是ADDCA

❾ 求50道八年級下冊數學題、30道初二下期物理題和初二下期英語閱讀理解完形填空各30篇

http://wenku..com/view/7aa1d108bb68a98271fefa65.htmlhttp://wenku..com/view/98bad323dd36a32d73758102.htmlhttp://wenku..com/view/8252086c1eb91a37f1115c15.html（每題只有一個正確答案，將正確答案的序號填在題後的括弧內）1． 小明同學在學習了初二物理後，獲得了以下的一些認識，其中正確的是( )
A.所謂的力就是物體間的一種相互作用
B.要發生相互作用的物體必須是直接接觸的
C.相互作用的力就是一對平衡力
D.物體在平衡力的作用下，作勻速直線運動，所以力是維持物體運動的原因
2． 關於力的作用效果，下面正確的說法是（ ）A.力是使物體保持靜止狀態的原因 B.力是維持物體運動的原因C.力是改變物體運動狀態的原因 D.物體受力時，才會運動
3． 汽車在水平公路上做勻速直線運動，這是因為（ ） A.汽車的慣性等於所受的阻力 B.汽車的牽引力等於所受的阻力 C.汽車的牽引力大於所受的阻力 D.汽車的牽引力等於所受的重力
4． 有關重力產生的原因說法正確的是（ ）
A．物體只有接觸地球，才被地球吸引．
B．地球吸引物體，物體不吸引地球．
C.地球吸引物體的力大於物體吸引地球的力．
D．地球吸引近地面的物體，物體也吸引地球．
5． 鉛球被推出後，不計空氣阻力，在空中飛行時（ ）
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．關於力，下列說法不正確的是（ ）
A．兩個物體只要相接觸，就一定有壓力的作用
B．離開了物體，就沒有相互作用的力
C．力的作用效果是使物體發生形變或改變物體的運動狀態
D．力的作用效果不僅與力的大小有關，還與力的方向和力的作用點有關
7． 一個成年人受到的重力大約是( )
A．6N B．60N C．600N D．6000N
8． 以下措施中用來減小摩擦的是( )
A．上緊縫紉機的皮帶 B.在筆頭上裝上小鋼珠，製成圓珠筆
C．在綱絲鉗口刻上花紋 D.在乒乓球拍上粘上帶顆粒的膠皮
9. 如圖所示是阿基米德原理的驗證過程的實驗，從實驗中可以驗證的規律是（ ）
A.浮力與物體的體積和形狀及物體的重力三者有關
B.浮力與物體排開的液體受到的重力有關C.浮力與物體自身的重力也有關
D.與物體在液體中的深度有關，因為液體對物體產生的力是由壓力差所造成的。
10.氣球可以帶重物在空中飛行的原因是（ ）
A.由於氣球中氣體的密度遠遠小於空氣的密度，只要氣球中充滿這種氣體，它都可以上升
B.只有在氣球排開的氣體的重力大於氣球及它所帶重物的重力才能上升
C.氣球只要充足氣總可以上升
D.氣球上升與充入氣體的密度無關
11．下列情況下，物體受平衡力作用的是（ ）
A．蘋果從樹上落下來． B．汽車在彎道上勻速轉彎．
C．物體在斜坡上勻速直線滑下． D．向上拋出的石塊
12．一個上、下底面材料相同的圓台型物體置於水平地面上，按圖a所示放置時，勻速將物體拉動的水平力大小是Fa；按圖b所示放置時，勻速將物體拉動的水平力大小是Fb．則（ ）
A．Fa＞Fb B．Fa＜Fb．
C．Fa=Fb． D．不知速度，無法判斷．
13．如圖所示，能使物體做勻速直線運動的受力示意圖是（ ）

14．某車在一條長直水泥路面上先以10m／s的速度勻速行駛了2min，後以8m／s的速度勻速行駛了5min，則該車在兩段運動時間內所受路面對車的摩擦力大小之比是 （ ）
A．l：1 B．5：4 C．l：2 D．都不對．
15．某人用力推置於水平地面的一隻箱子，但箱子沒有動，這是因為（ ）
A．推力小於地面給箱子的摩擦力． B．箱子慣性太大了．
C．箱子受地球引力大於推力． D．推力與地面給箱子的摩擦力相互平衡．
16．如圖所示，用水平力F=50N將m=2kg的物體壓在豎直牆面上靜止，則牆面給物體的摩擦力是(g=10N／kg) （ ）
A．50N，豎直向上 B．20N，豎直向上
C．20N，豎直向下 D．70N，豎直向上
17．兩個完全相同的容器中分別盛有質量相等的水和酒精，如圖所示．下列說法正確的是（ ）
A．兩容器底受到壓力相等
B．液面下深度相同的兩處a、b所受液體壓強相等
C．盛水容器底部受到壓強較大
D．盛水容器底部受到壓強較小
18．如圖所示，玻璃筒下端扎有橡皮膜，內放有一定量的水後，橡皮膜向外凸起．當將玻璃管慢慢放入盛有酒精的燒杯中使橡皮膜恢復原狀，則（ ）
A．水面比酒精液面要高一點 B．水面比酒精液面要低一點
C．水面與酒精液面相平 D．三種現象都有可能．
19．如圖 ，A、B是兩個在上面開口容積相同的杯子，其重力都是2N，兩杯中裝滿水時，深度相同都為h，下面正確的說法是（ ）A.B杯底部所受的壓強比A杯大B.A杯底部所受的壓強比B杯大
C.由於底面積不同，A杯底部所受到的壓力一定大於B杯底部所受的壓力
D.兩者底部所受到的壓力相同，因為液體的重力都是一樣的，與底面積無關
二、填空題（每空1分，共25分）
20． 在水平地面上放一個重力是50N的物體，用2N的水平拉力，使物體在水平面上作勻速直線運動，則物體受到的摩擦力是________。
21． 滑旱冰的人和地面的摩擦是_______摩擦，轉筆刀轉孔與鉛筆間的摩擦是_______摩擦。
22． 放在水中的木塊正在上浮，在它露出水面之前受到的浮力______。露出水面以後受到的浮力______。（填「變大」，「變小」或「不變」）
23． 金屬塊重10N，掛在彈簧測力計上，當它全部放在水中時，彈簧測力計的讀數為8N，如圖所示，此時金屬塊受到的浮力是_____N。如金屬塊有一半體積露出水面,彈簧測力計上的讀數應該_____N。
24. 如圖所示三個體積相同的實心球體在液體中靜止，那麼________球所受到的浮力最小，與液體密度相同的是______球，三球中密度最小的是_________球。
25． 物體剛脫離正在上升的氣球時，它的運動方向是______，這是由於______的緣故．物體最終將落回地面，這是由於物體______的緣故．
26． 吊車以lm／s速度勻速提起重2000N的重物，則鋼索拉力是______N．當吊車以2m／s速度勻速提起重物時，鋼索拉力將______2000N（填大於、等於、小於）．若提升過程中，鋼索拉力變為1800N，則重物提升速度將______（填變大、變小、不變）．
27．收音機旋鈕上刻有花紋是用______ ___來______摩擦力；皮帶傳動時將皮帶拉緊是用__ _ ___來______摩擦力．
28．質量為300g的水倒入底面積為20cm2的容器中，水深20cm，容器置於水平地面，如圖所示．不計容器自身質量，則水對容器底的壓強是______Pa；容器對地面的壓強是______Pa．(g=10N／kg)
29．建築工人常用重垂線檢查牆壁 ，重垂線是利用 的原理做成的。
30．一個圓柱形容器里裝滿水，若把一木塊放入水中，則水對杯底的壓強將_____________(填 「變大」，「變小」或「不變」)

三、計算題（每題5分，共15分）
31．如圖所示，將一個不漏氣的薄塑料袋平放在桌面上，一根飲料吸管插在袋口邊緣，把袋口折幾折後用膠帶封住，使塑料袋口不漏氣。將兩塊邊長分別為6cm、3cm的正方形硬紙板(硬紙板質量不計)相隔一定距離平放在塑料袋上，在大紙板上放兩個一元的硬幣，在小紙板上放一個一元的硬幣，然後通過吸管慢慢的向袋裡吹氣，通過計算來說明。（1）哪一個紙板會首先被塑袋「抬」起來?（2）若在大紙板上放四個—元的硬幣，在小紙板上放幾個一元的硬幣，可使兩紙板同時被「抬」起來?
一玻璃球掛彈簧測力計下，在空氣中稱其重力為4.41N，將它浸沒水中稱彈簧測力計的示數為2.94N，將它浸沒在石油中稱彈簧測力計的示數為3.30N，求玻璃球和石油的密度。
33. 質量為8t的卡車，在水平公路上勻速行駛時受到摩擦阻力是車重的0．02倍，求卡車行駛時，發動機對卡車的牽引力是多大？(g=10N／kg)

參考答案:
一、選擇題
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、填空題
1.20N 2.滑動 滑動 3.不變 ,變小 4. 2N,9N 5. A B A 6.豎直向上
慣性 重力 7.重力 支持力 平衡力 地球 桌面 8.2000N 等於 變小
9. 減小 增大粗糙程度 增大 增大壓力 增大 10.400N 2000Pa 3N 1500Pa
11. 是否豎直 12.重力的方向總是豎直向下 12.不變
13.液體內部有壓強 高度差 液體內部的壓強隨深度的增加而增大
三、計算題
1. 3.2×106N 2. 3×103Kg/m3 0.755×103Kg/

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