-
If you have ever been swimming in the ocean, you may have noticed that sea water is easier to float in than pool water. Here's why.
You'll need：
Two bowls Food coloring Spoon Salt Two eggs
1: Fill bowls half way with water.
2:Add 10 tablespoons of salt to one bowl, mix until it dissolves (溶解), and then add several drops of color.
3:Carefully, put an egg into each bowl of water and watch what happens.
What happens?
The egg in the plain water sinks. The egg in the salt water floats.
(If the salt water egg does not float well, mix more salt into the bowl )
The water and salt particles（粒子）in the salt water bowl are closer together it than plain water particles are. They push harder against the egg than the plain water particles do and the egg floats.
1.The purpose of: the experiment is to explain ________________.
A.why the egg floats in the salt water
B.why people float more easily in the sea
C.how we can make the egg float in water
D.how the water and salt particles act together
2.According to the text, if the egg in the salt water doesn’t float, which is the reason?
A.The water is too hot. B.The egg is not fresh.
C.The bowl is too small. D.The salt is not enough.
3.What is this passage probably taken from?
A.A science magazine B.A tour guide. C.A news report. D.A geography book
-
Have you ever been swimming in a pond, stream, or lake and had a leech(水蛭) stick on you? You probably shouted and tried to force it away as fast as you could. But leeches aren’t really sick, and sometimes they can save lives.
In ancient Egypt and later medieval(中世纪) Europe, doctors put leeches on patients. They believed that the spineless wormlike living things can cure all kinds of illnesses by sucking(吮吸) a patient’s blood. In Europe and in the United States, millions of leeches were used throughout the 1800s. Doctors used leeches to treat a number of illnesses, from obesity to headaches. People soon learned that leeches could not cure most diseases and were not a good treatment for patients. However in 1985, a Harvard University doctor changed people’s thinking once again. He was trying to reattach(重新接上) a patient’s ear, which had been cut off. He had trouble reconnecting the veins because the patient’s blood kept clotting(凝). He used a leech to draw out the blood and saved the ear.
Since then, leeches have often been used in surgery where body parts are reattached. During surgery, a leech is placed on the area where the surgeon does not want the blood to pool and clot. Then the leech produces a thing that keeps the veins(静脉) open and stops the blood from clotting. The leech sucks up excess blood, allowing fresh blood to flow, which helps the patient get well.
Some people are scared to death at the thought of having a blood sucking thing attached to them. But why not welcome a leech if it can save your life?
1.What is the passage mostly about?
A.Patient’s interest in leeches.
B.How and where leeches live.
C.The medical uses of leeches.
D.Leeches in ancient medicine.
2.When were leeches first used?
A.In medieval Europe.
B.In ancient Egypt.
C.In 1985 by a Harvard University doctor.
D.In the 1800s in Europe and in the United States.
3.When a leech is placed on a patient, which one happens first?
A.The leech produces a thing.
B.The patient’s veins open.
C.The patient’s blood flow faster
D.The leech sucks up excess blood.
4.Why did a doctor in 1985 decide to try using leeches?
A.He needed a way to close the wound.
B.He wanted to change people’s thought.
C.He believed in the mystery of nature.
D.He needed to keep blood from clotting
-
Have you ever been sad because you failed in something? If so, please remember, for often, achieving what you expect is not the most important thing. Here is a story to tell you why.
One day a little boy decided to dig a hole behind his house after watching a science program. As he was working, a couple of boys stopped by to watch. “What are you doing?” asked one of the visitors. “I want to dig a deep hole all the way through the earth!” the boy answered excitedly. The older boys began to laugh, telling him that it was impossible to do it. Then they left.
The little boy kept on digging and digging. Suddenly, a few small colorful stones caught his eyes. He collected them and put them into a glass jar (罐) patiently. Humming (哼唱) a song, he went on digging. The jar was full soon. Then he talked to himself calmly and proudly, “Maybe I can’t finish digging all the way through the earth, but look at what I have found in the process (过程) of digging!”
The boy’s goal (目标) was too difficult, but it did cause him to go on, in other words, to cause us to keep working!
Not every goal will be achieved. Not every job will end up with a success. Not every dream will come true. But when you can’t achieve your goal, maybe you can say, “Yes, but look what I’ve found along the way! There are so many wonderful things that have come into my life because I tried to do something!” It is in the digging that life is lived. It is the unexpected joy on the journey that really has a meaning.
1.What did the boy do after watching a program?
A. He bought a glass jar. B. He played with some visitors.
C. He started to dig a hole. D. He went on watching the program.
2.What did the older boys think of the little boy?
A. He was silly. B. He was strong-minded. C. He was strict. D. He was energetic.
3.What does the underlined sentence “It is in the digging that life is lived.” mean according to the article?
A. Life is to make a big success. B. Life is difficult but colorful.
C. Life is to find the colorful stones. D. Life is on the way to achieve the goal.
-
Have you ever been sad because you failed in something? If so, please remember, for often, achieving what you expect is not the most important thing. Enjoy the process(过程). Here is a story to tell you why.
One day a little boy decided to dig a hole behind his house after watching a science program. As he was working, a couple of boys stopped by to watch. “What are you doing?” asked one of the visitors. “I want to dig a deep hole all the way through the earth!” the boy answered excitedly. The older boys began to laugh, telling him that it was impossible to do it. Then they left.
The little boy kept on digging and digging. Suddenly, a few small colorful stones caught his eyes. He collected them and put them into a glass box patiently. Humming a song, he went on digging. The box was full soon. Then he talked to himself quietly and proudly, “Maybe I can’t finish digging all the way through the earth, but look at what I have found in the process of digging!”
The boy’s goal was too difficult, but it did cause him to go on, in other words, to cause us to keep working.
Not every goal will be achieved. Not every job will end up with a success. Not every dream will come true. But when you can’t achieve your goal, maybe you can say, “Yes, but look what I’ve found along the way! There are so many wonderful things that have come into my life because I tried to do something!” It is in the digging that life is lived. It is the unexpected joy on the journey that really has a meaning.
1. Is achieving what you expect the most important thing in the passage?
2. When did the little boy decide to dig a hole behind his house?
3.Why did the older boys begin to laugh at the little boy?
4. What did the boy find in the process of digging?
5. What does the writer want to tell us?
-
Have you ever been sad because you failed in something? If so, please remember, for often, achieving what you expect is not the most important thing. Here is a story to tell you why.
One day a little boy decided to dig a hole behind his house after watching a science program. As he was working, a couple of boys stopped by to watch. "What are you doing?" asked one of the visitors. "I want to dig a deep hole all the way through the earth!" the boy answered excitedly. The older boys began to laugh, telling him that it was impossible to do it. Then they left.
The little boy kept on digging and digging. Suddenly, a few small colorful stones caught his eyes. He collected them and put them into a glass jar patiently. Humming a song, he went on digging. The jar was full soon. Then he talked to himself calmly and proudly, "Maybe I can't finish digging all the way through the earth, but look at what I have found in the process (过程) of digging !"
The boy's goal was too difficult, but it did cause him to go on, in other words, to cause us to keep working!
Not every goal will be achieved. Not every job will end up with a success. Not every dream will come true. But when you can't achieve your goal, maybe you can say, "Yes, but look what I've found along the way! There are so many wonderful things that have come into my life because I tried to do something!" It is in the digging that life is lived. is the unexpected joy on the journey that really has a meaning.
1.What did the boy do after watching a program?
A. He bought a glass jar.
B. He started to dig a hole.
C. He played with some visitors.
2.What did the older boys think of the little boy?
A. He was silly.
B. He was strict.
C. He was strong-minded.
3.When did the boy find the stones?
A. Before he met the older boys.
B. When he wanted to give up digging.
C. After the older boys laughed at him.
4.What does the underlined sentence "It is in the digging that life is lived.” mean according to the article?
A. Life is to make a big success.
B. Life is to find the colorful stones.
C. Life is on the way to achieve the goal.
5.Which is the best title for this article?
A. Enjoying the Process
B. How to Achieve Goals
C. A Journey through the Earth
-
Have you ever been sad because you failed in something? If so, please remember, for often, achieving what you expect is not the most important thing. Here is a story to tell you why.
One day a little boy decided to dig a hole behind his house after watching a science program. As he was working, a couple of boys stopped by to watch. "What are you doing?" asked one of the visitors. "I want to dig a deep hole all the way through the earth!" the boy answered excitedly. The older boys began to laugh, telling him that it was impossible to do it. Then they left.
The little boy kept on digging and digging. Suddenly, a few small colorful stones caught his eyes. He collected them and put them into a glass jar patiently. Humming a song, he went on digging. The jar was full soon. Then he talked to himself calmly and proudly, "Maybe I can't finish digging all the way through the earth, but look at what I have found in the process of digging !"
The boy's goal was too difficult, but it did cause him to go on, in other words, to cause us to keep working!
Not every goal will be achieved. Not every job will end up with a success. Not every dream will come true. But when you can't achieve your goal, maybe you can say, "yes, but look what I've found along the way! There are so many wonderful things that have come into my life because I tried to do something!" It is in the digging that life is lived. It is the unexpected joy on the journey that really has a meaning.
1.What did the boy do after watching a program?
A. He bought a glass jar. B. He started to dig a hole.
C. He played with some visitors. D. He went on watching the program.
2.What did the older boys think of the little boy?
A. He was silly. B. He was strict.
C. he was strong-minded. D. He was energetic.
3.When did the boy find the stones?
A. Before he met the older boys
B. When he wanted to give up digging.
C. After the older boys laughed at him.
D. As soon as he began to dig the hole.
4.What does the underlined sentence "It is in the digging that life is lived." mean according to the article?
A. Life is to make a big success.
B. Life is to find the colorful stones.
C. Life is difficult but colorful.
D. Life is on the way to achieve the goal.
5.Which is the best title for this article?
A. Enjoying the process
B. How to achieve goals
C. A journey through the earth
D. Dig a deep hole all the way through the earth.
-
Have you ever been sad because you failed in something? If so, please remember, for often, achieving what you expect is not the most important thing. Here is a story to tell you why.
One day a little boy decided to dig a hole behind his house after watching a science program. As he was working, a couple of boys stopped by to watch. “What are you doing?” asked one of the visitors. “I want to dig a deep hole all the way through the earth!” the boy answered excitedly. The older boys began to laugh, telling him that it was impossible to do it. Then they left.
The little boy kept on digging and digging. Suddenly, a few small colorful stones caught his eyes. He collected them and put them into a glass jar (罐) patiently. Humming (哼唱) a song, he went on digging. The jar was full soon. Then he talked to himself calmly and proudly, “Maybe I can’t finish digging all the way through the earth, but look at what I have found in the process (过程) of digging!”
The boy’s goal (目标) was too difficult, but it did cause him to go on, in other words, to cause us to keep working!
Not every goal will be achieved. Not every job will end up with a success. Not every dream will come true. But when you can’t achieve your goal, maybe you can say, “Yes, but look what I’ve found along the way! There are so many wonderful things that have come into my life because I tried to do something!” It is in the digging that life is lived. It is the unexpected joy on the journey that really has a meaning.
1.What did the boy do after watching a program?
A. He bought a glass jar.
B. He started to dig a hole.
C. He played with some visitors.
D. He went on watching the program.
2.What did the older boys think of the little boy?
A. He was silly.
B. He was strict.
C. He was strong-minded.
D. He was energetic.
3.What does the underlined sentence “It is in the digging that life is lived.” mean according to the article?
A. Life is to make a big success.
B. Life is to find the colorful stones.
C. Life is difficult but colorful.
D. Life is on the way to achieve the goal.
-
Have you ever been sad because you failed in something? If so, please remember, for often, achieving what you expect is not the most important thing. Here is a story to tell you why.
One day a little boy decided to dig a hole behind his house after watching a science program. As he was working, a couple of boys stopped by to watch. “What are you doing?” asked one of the visitors. “I want to dig a deep hole all the way through the earth!” the boy answered excitedly. The older boys began to laugh, telling him that it was impossible to do it. Then they left.
The little boy kept on digging and digging. Suddenly, a few small colorful stones caught his eyes. He collected them and put them into a glass jar patiently. Humming (哼唱) a song, he went on digging. The jar was full soon. Then he talked to himself calmly and proudly, “Maybe I can’t finish digging all the way through the earth, but look at what I have found in the process (过程) of digging!”
The boy’s goal (目标) was too difficult, but it did cause him to go on, in other words, to cause us to keep working!
Not every goal will be achieved. Not every job will end up with a success. Not every dream will come true. But when you can’t achieve your goal, maybe you can say, “Yes, but look what I’ve found along the way! There are so many wonderful things that have come into my life because I tried to do something!” It is in the digging that life is lived. It is the unexpected joy on the journey that really has a meaning.
1.What did the boy do after watching a program?
A. He bought a glass jar.
B. He started to dig a hole.
C. He played with some visitors.
D. He went on watching the program.
2.What did the older boys think of the little boy?
A. He was silly. B. He was strict.
C. He was strong-minded. D. He was energetic.
3.What does the underlined sentence “It is in the digging that life is lived.” mean according to the article?
A. Life is to make a big success.
B. Life is to find the colorful stones.
C. Life is difficult but colorful.
D. Life is on the way to achieve the goal.
-
Have you ever been sad because you failed in something? If so, please remember, for often, achieving what you expect is not the most important thing. Here is a story to tell you why.
One day a little boy decided to dig a hole behind his house after watching a science program. As he was working, a couple of boys stopped by to watch.“What are you doing?” asked one of the visitors.“I want to dig a deep hole all the way through the earth!”the boy answered excitedly. The older boys began to laugh, telling him that it was impossible to do it. Then they left.
The little boy kept on digging and digging. Suddenly, a few small colorful stones caught his eyes. He collected them and put them into a glass jar patiently. Humming a song, he went on digging. The jar was full soon. Then he talked to himself calmly and proudly,“Maybe I can’t finish digging all the way through the earth, but look at what I have found in the process of digging !”
The boy’s goal was too difficult, but it did cause him to go on, in other words, to cause us to keep working!
Not every goal will be achieved. Not every job will end up with a success. Not every dream will come true. But when you can’t achieve your goal, maybe you can say,“yes, but look what I’ve found along the way! There are so many wonderful things that have come into my life because I tried to do something!”It is in the digging that life is lived. It is the unexpected joy on the journey that really has a meaning.
1.What did the boy do after watching a program?
A. He bought a glass jar.
B. He started to dig a hole.
C. He played with some visitors.
D. He went on watching the program.
2.What did the older boys think of the little boy?
A. He was silly. B. He was strict.
C. he was strong-minded. D. He was energetic.
3.When did the boy find the stones?
A. Before he met the older boys.
B. When he wanted to give up digging.
C. After the older boys laughed at him.
D. As soon as he began to dig the hole.
4.What does the underlined sentence“It is in the digging that life is lived.”mean
according to the article?
A. Life is to make a big success.
B. Life is to find the colorful stones.
C. Life is difficult but colorful.
D. Life is on the way to achieve the goal.
5.Which is the best title for this article?
A. Enjoying the process.
B. How to achieve goals.
C. A journey through the earth.
D. Dig a deep hole all the way through the earth.
-
Have you ever been sad because you failed in something? If so, please remember, for often, achieving what you expect is not the most important thing. Here is a story to tell you why.
One day a little boy decided to dig a hole behind his house after watching a science program. As he was working, a couple of boys stopped by to watch. "What are you doing?" asked one of the visitors. "I want to dig a deep hole all the way through the earth!" the boy answered excitedly. The older boys began to laugh, telling him that it was impossible to do it. Then they left.
The little boy kept on digging and digging. Suddenly, a few small colorful stones caught his eyes. He collected them and put them into a glass jar patiently. Humming a song, he went on digging. The jar was full soon. Then he talked to himself calmly and proudly, "Maybe I can't finish digging all the way through the earth, but look at what I have found in the process of digging !"
The boy's goal was too difficult, but it did cause him to go on, in other words, to cause us to keep working!
Not every goal will be achieved. Not every job will end up with a success. Not every dream will come true. But when you can't achieve your goal, maybe you can say, "yes, but look what I've found along the way! There are so many wonderful things that have come into my life because I tried to do something!" It is in the digging that life is lived. It is the unexpected joy on the journey that really has a meaning.
1.What did the boy do after watching a program?
A．He bought a glass jar.
B．He started to dig a hole.
C．He played with some visitors.
D．He went on watching the program.
2.What did the older boys think of the little boy?
A．He was silly. B．He was strict.
C．he was strong-minded. D．He was energetic.
3.When did the boy find the stones?
A．Before he met the older boys.
B．When he wanted to give up digging.
C．After the older boys laughed at him.
D．As soon as he began to dig the hole.
4.What does the underlined sentence "It is in the digging that life is lived." mean according to the article?
A．Life is to make a big success.
B．Life is to find the colorful stones.
C．Life is difficult but colorful.
D．Life is on the way to achieve the goal.
5.Which is the best title for this article?
A．Enjoying the process
B．How to achieve goals
C．A journey through the earth
D．Dig a deep hole all the way through the earth.