Here’s an amazing way to get a hard-boiled egg into a bottle, even though the mouth of the boiled is smaller than the egg! What’s more, you don’t even need to touch the egg to get it to go in! For 题目和参考答案——青夏教育精英家教网—

题目内容

Here’s an amazing way to get a hard-boiled egg into a bottle, even though the mouth of the boiled is smaller than the egg! What’s more, you don’t even need to touch the egg to get it to go in!

For this experiment you will need:

·a hard-boiled egg

·a glass bottle with a mouth just slightly smaller than the egg (a fruit-drink bottle works well)

·a 8-cm by 8-cm(3-inch by 3-inch)piece of newspaper

·a match

Remove the shell from the egg. Set the egg on the mouth of the bottle to see that the egg does not fit through the mouth.

Light the paper. Remove the egg from the mouth of the bottle and drop the burning paper into the bottle. Before the fire goes out, set the egg back onto the mouth of the bottle. Within a few seconds the egg will squeeze(挤) through the mouth and into the bottle.

As it entered the bottle, the egg may have broken into pieces. This happens when the diameter(直径) of the egg is more than about 0.5 cm(about 3/16 inch) larger than the diameter of the bottle’s opening.

Why does the egg slide into the bottle, even though no one is pushing it? Because the pressure of the air is pushing it. Before the burning paper is put into the bottle, the pressure of the air inside is the same as outside. The burning paper, however, heats the air inside. This causes the air inside to expand. When the egg is placed on top of the bottle, it seals(封住) the bottle. When the fire goes out, the air inside cools. As it cools, the air contracts(紧缩), and the pressure of the air inside becomes less than the pressure outside. Then, the higher outside pressure pushes the egg into the bottle!

The best title of this passage can be .

A. An interesting story B. The pressure of the air

C. Egg in a bottle D. Egg, bottle and match

What don’t you need in this experiment?

A. Eggs. B. Water. C. Bottles. D. Paper.

Why will the egg break into pieces while entering the bottle?

A. Because of the burning paper.

B. Because the diameter of the egg is too larger than that of the bottles opening.

C. Because it is cool inside the bottle.

D. Because the pressure of the air inside is larger.

What is the most important to get the egg into a bottle?

A. A match. B. A fruit-drink bottle. C. The pressure of the air. D. The burning paper.

【小题1】C

【小题2】B

【小题3】B

【小题4】C

解析:

略

练习册系列答案

欢乐春节快乐学系列答案

假期驿站系列答案

寒假天地重庆出版社系列答案

开拓者系列丛书高中新课标假期作业寒假作业系列答案

快乐假期电子科技大学出版社系列答案

轻松假期行寒假生活系列答案

新鑫文化过好假期每一天寒假团结出版社系列答案

寒假轻松假期系列答案

文涛书业假期作业快乐寒假西安出版社系列答案

效率寒假系列答案

相关题目

Here’s an idyllic(田园风光的) scene: a small village where the sun always shines, crops always grow and your friends drop by to sweep your yard to the sound of guitar music. Animals do what they are told, there is no disease, and lending folks a helping hand makes you richer and wiser. Welcome to FarmVille — current population 69m and rising fast.

“It reminds me of my childhood,” says one player, Lia Curran, 37, a chemist from London. “Right now I’m growing wheat and poinsettia, I’ve got a small orchard, and I’m keeping some chickens and some cows. I like having the animals. It’s comfortable.”

Curran’s young animals, however, are nothing more than a collection of computer-controlled cartoons. FarmVille is an online computer game built into the social networking site Facebook and is described by its players as “addictive”. Launched last June by Zynga Game Network, FarmVille now has more players than Twiter’s entire user base — or more than the population of the UK. The players are largely women over the age of 35.

Jenny Glyn, 33, a London housewife, started playing in September. “I had a look at a friend’s farm and was hooked,” she says. “My first motivation was to overtake her, but I did that pretty quickly. Now there’s something satisfying about growing crops.”

FarmVille intellectually unites the worlds of social networking and gaming. Players are given a patch of ground with six fields, “cash”, a few seeds and a plough and have to build up wealth, skills and neighbors to create bigger, better, richer farms.

Inviting your online friends to play means you earn more and get free gifts; you rise rapidly through the first levels but, once hooked, have to work harder and harder with no final level or goal in sight.

“It’s very moreish,” says Curran. She hasn’t yet paid real-world money to advance in the game, but her friends do. One buys extra virtual currency at the exchange rate of $240 (??145) in FarmVille for $40 (??24) in the real world.

“I’d expanded on FarmVille as much as I could, but I just wanted a pond and some bushes and trees around it,” says the woman, who is too embarrassed to be named. “I didn’t tell my husband I’d paid real money because he’d think I’m mad. But then he did keep me waiting in the car outside our house while he harvested his raspberries.”

Brian Dudley, chief executive at Broadway Lodge, an addiction treatment centre, warns that this sort of obsessive(令人着魔的) play can lead to an addiction as severe as gambling.

59. What does Curran do in the passage?

A. She is a player. B. She is a farmer who grows wheat and poinsettia.

C. She is a chemist. D. She is a housewife who raises chickens and cows.

60. By FarmVille, the writer means ______.

A. an addictive farm on which live 69 million farmers

B. a London housewife’s farm

C. an online computer game built into the social networking site

D. a farm on which people grow real crops and play as well

61. In the last but one paragraph, the husband kept the woman waiting outside ______.

A. because he was angry at his wife’s being mad about the farm

B. because he himself was busy with his farm

C. in order to punish his wife for her having paid real money

D. so that his wife would wake up from her addiction to the farm

62. According to the passage, which of the following is NOT true?

A. The population of the UK is less than 69 million.

B. This sort of obsessive play can cause very severe addiction.

C. Once hooked, one has to make greater efforts to reach a higher level.

D. Up till now, nobody has yet paid real-world money to advance in the play.

Last night, I was waiting for a taxi. After 5 minutes, I was  36 . The driver seemed to be angry. I asked him what the   37  was. He said he had just come from the airport without a   38  , which was basically $70 in lost fare.
Over the course of the ride, the anger   39  died down. He mentioned he had read an article saying the   40  people are the ones that give, so he hoped he’d have more   41  to give in his life. I was starting to   42  being with him! We continued talking about why   43  is so beneficial both to the giver and the receiver and different ways to   44  it.
As we arrived at my destination, I 45  my fare. But I pulled out an extra $20 and said, “Since we’ve been talking about this whole time, I wanted to share that   46  with you. I’ve already paid my fare, but here’s an extra little bit. You can   47  it, since you’re already down $70 from the airport. But if you want to experience the 48 of the gift, then tell the next passenger in this taxi that their ride is a gift from another and they can   49 their gratitude(感激) in whatever way.”
The man turned toward me, tears in his eyes, and said, “Sir, I have a better   50  . You give that $20 to a   51  person around here and I’ll treat the next passenger with a   52  ride myself.
Wow. This man was   53  10 minutes ago. I got out and walked around trying to   54 someone who needed help before heading to my destination.
It was an honor meeting that driver and    55   the lesson of how everyone is capable of giving.

Hi! Have you ever suddenly felt that someone you knew was in trouble — and was he? Have you ever dreamed something that came true later? Maybe you have ESP (超感觉知觉).
　　ESP stands for Extrasensory Perception. It may be called a sixth sense. It seems to let people know about events before they happen, or events that are happening some distance away.
　　Here's an example. A woman was ironing clothes. Suddenly she screamed, "My father is dead! I saw him sitting in the chair!" Just then, a telegram came. The woman's father died of a heart attack. He died sitting in a chair.
　　There are thousands of stories like this one on record. Scientists are studying them to find out what's behind these strange mental messages. Here's another example—one of hundreds of dreams that have come true.
　　A man dreamed he was walking along a road when a horse and carriage came by. The driver said, "There's room for one more." The man felt the driver seemed dead, so he ran away. The next day, when the man was getting on a crowded bus, the bus driver said, "There's room for one more."
　　Then the man saw that the driver's face was the same face he had seen in the dream. He wouldn't get on the bus. As the bus drove off, it crashed and burst into flames. Everyone was killed!
　　Some people say stories like these are coincidences. Others, including some scientists, say that ESP is real. From studies of ESP, we may someday learn more about the human mind.
【小题1】According to the passage, the author believes that the sixth sense is ________.

【小题2】ESP lets people know _________.

A．about events before they happen　

B．about events after they happen

C．about events that are happening some distance away

D．A and C

【小题3】By studying ESP, scientists may get to ________.

A．learn how people tell lies	B．know more about human dreams
C．know more about human mind	D．learn how strange things happen

【小题4】In the last paragraph the underlined word "coincidences" probably means _______.

A．things that may not happen	B．things that happen in a dream
C．things that must happen	D．things that happen by accident

Do you want to live with a strong sense of peacefulness, happiness, goodness, and self-respect? The collection of happiness actions broadly categorized as “honor” help you create this life of good feelings.
Here’s an example to show how honorably actions create happiness.
Say a store clerk fails to charge us for an item. If we keep silent, and profit from the clerk’s mistake, we would drive home with a sense of sneaky excitement. Later we might tell our family or friends about our good fortune. One the other hand, if we tell the clerk about the uncharged item, the clerk would be grateful and thank us for our honesty. We would leave the store with a quiet sense of honor that we might never share with another soul.
Then, what is it to do with our sense of happiness?
In the first case, where we don’t tell the clerk, a couple of things would happen. Deep down inside we would know ourselves as a type of thief. In the process, we would lose some peace of mind and self-respect. We would also demonstrate that we cannot be trusted, since we advertise our dishonor by telling our family and friends. We damage our own reputations by telling others. In contrast, bringing the error to the clerk’s attention causes different things to happen. Immediately the clerk knows us to be honorable. Upon leaving the store, we feel honorable and our self-respect is increased. Whenever we take honorable action we gain the deep internal rewards of goodness and a sense of nobility.
There is a beautiful positive cycle that is created by living a life of honorable actions. Honorable thoughts lead to honorable actions. Honorable actions lead us to a happier existence. And it’s easy to think and act honorably again when we’re happy. While the positive cycle can be difficult to start, once it’s started, it’s easy to continue. Keeping on doing good deeds brings us peace of mind, which is important for our happiness.
【小题1】According to the passage, the positive action in the example contributes to our__________.

A．self-respect	B．financial rewards
C．advertising ability	D．friendly relationship

【小题2】The author thinks that keeping silent about the uncharged item is equal to __________.

【小题3】The phrase “bringing the error to the clerk’s attention” (in para. 5)means_________.

A．telling the truth to the clerk

B．offering advice to the clerk

C．asking the clerk to be more attentive

D．reminding the clerk of the charged item

【小题4】How will we feel if we let the clerk know her mistake?

A．We’ll be very excited

B．We’ll feel unfortunate

C．We’ll have a sense of honor

D．We’ll feel sorry for the clerk

【小题5】Which of the following can be the best title of this passage?

A．How to Live Truthfully

B．Importance of Peacefulness

C．Ways of Gaining Self-respect

D．Happiness through Honorable Actions

Hi！Have you ever suddenly felt that someone you knew was in trouble—and was he? Have you ever dreamed something that came true later? Maybe you have ESP (超感觉知觉).

　　ESP stands for Extrasensory Perception. It may be called a sixth sense. It seems to let people know about events before they happen, or events that are happening some distance away.

　　Here's an example. A woman was ironing clothes. Suddenly she screamed, "My father is dead! I saw him sitting in the chair!" Just then, a telegram came. The woman's father died of a heart attack. He died sitting in a chair.

　　There are thousands of stories like this one on record. Scientists are studying them to find out what's behind these strange mental messages. Here's another example—one of hundreds of dreams that have come true.

　　A man dreamed he was walking along a road when a horse and carriage came by. The driver said, "There's room for one more." The man felt the driver seemed dead, so he ran away. The next day, when the man was getting on a crowded bus, the bus driver said, "There's room for one more."

　　Then the man saw that the driver's face was the same face he had seen in the dream. He wouldn't get on the bus. As the bus drove off, it crashed and burst into flames. Everyone was killed!

　　Some people say stories like these are coincidences. Others, including some scientists, say that ESP is real. From studies of ESP, we may someday learn more about the human mind.

1.According to the passage, the author believes that the sixth sense is ________.

A．in existence

B．imaginative

C．not real

D．impossible

2.ESP lets people know _________.

A．about events before they happen

B．about events after they happen

C．about events that are happening some distance away

D．A and C

3.In the last paragraph the underlined word "coincidences" probably means _______.

A．things that may not happen

B．things that happen in a dream

C．things that must happen

D．things that happen by accident

4.This article is mainly about ________.

A．the human dream	B．the sixth sense
C．the human mind	D．a crowded bus

试题分类