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Do you want to keep away from colds? You must say, "Of course". Now, first, please put on a happy face.
A new study shows that happy and relaxing people seem to fall ill less often than those unhappy people. "It's possible that being happy helps the body fight illnesses," said the researcher Sheldon Cohen from New York University(大学). In an earlier study, Cohen found that cheerful and lively people caught coughs and colds less often. People's feelings seemed to affect their health. In this study, Cohen interviewed(采访) 193 adults(成人) every day for two weeks. During the interviews, the people told researchers that the doctors asked them to stay alone in a room for six days because of the cold.
The results showed the people who said they felt happy during the research period, their illness were less serious and lasted for a shorter time. Cohen believes that when people have good feelings, their body may make a chemical, and it can help fight illnesses and diseases.
So if you are worried about your health, look on the bright side more often. Just as the old saying goes, "A coin has two sides".
1.What does the underlined word "researcher" mean in Chinese?
A.工程师 B.经理 C.研究者 D.哲学家
2.What did the study find?
A.Happy people never fell ill.
B.People's feelings didn't affect their health.
C.Happy and lively people had less serious illnesses.
D.People with good feelings became ill more easily.
3.According to Cohen, which of the following can help fight illnesses and diseases?
A.Sleeping. B.Laughing. C.Eating. D.Worrying.
4.Where can you read the passage?
A.In the newspaper. B.In a storybook.
C.In a novel. D.In an opera.
5.What does the sentence "A coin has two sides." mean?
A.A coin has left and right side.
B.A coin has front and back side.
C.A thing usually has bad and good sides.
D.The coin's front side is better than the back side.
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Have you ever rubbed your hands together when they get cold? Why do we do that? We do that for friction. Friction happens when two things that aren't very smooth rub together to make heat energy. The faster you rub two things together, the more friction (and heat) you can make. Let's discover friction!
WHAT YOU'LL NEED:
● Soap ● Water ● Your hands!
WHAT TO DO:
①Make sure your hands are dirty.
②Rub your hands together until you feel the heat of your hands.
③Now, use soap and water to get your hands very slippery(滑的).
④Try to make friction happen while your hands are slippery.
⑤Please write down what has happened.
LET'S TALK!
Friction is an energy that happens when two things tub together. When friction happens, it makes heat! When your hands are slippery, they won't make very much friction and your hands won't get so hot.
DID YOU KNOW?
● Friction happens when you stop your fast running bike.
● Ancient people made fires by rubbing two pieces of wood together. Friction happened though they didn't know it.
________
Friction is everywhere. Have you ever noticed situations where friction is happening? If not, ask your parents to take you out in a car. If it is not hot, touch the tires(轮胎) of the car before and after a short drive to see how much warmer they get from friction.
1.This text is most probably ________.
A.a science report B.a car advertisement
C.a rubbing introduction D.a chemistry programme
2.You'd better make your hands ________ to get heat when you rub them.
A.slippery B.dry C.wet D.smooth
3.What does the word "friction" in this text mean in Chinese?
A.摩擦 B.冷却 C.膨胀 D.震动
4. ________ is not an example of friction.
A.Bike riding B.Car driving
C.Hands rubbing D.Friction discovering
5.What's the last column(栏目)?
A.THINK IT OVER! B.WHAT HAPPENED?
C.EVERYDAY ACTION D.WORK WITH PARENTS
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A robot is a machine. But it is not just any machine. It is a special kind of machine. It is a machine that moves. It follows instructions. The instructions come from a computer. Because it is a machine, it does not make mistakes. And it does not get tired. And it never complains. Unless you tell it to!
Robots are all around us. Some robots are used to make things. For example, robots can help make cars. Some robots are used to explore dangerous places. For example, robots can help explore volcanoes. Some robots are used to clean things. These robots can help vacuum your house. Some robots can even recognize words. They can be used to help answer telephone calls.
Some robots look like humans. But most robots do not. Most robots just look like machines. Long ago, people imagined robots. Over 2,000 years ago, a famous poet imagined robots. The poet's name was Homer. His robots were made of gold. They cleaned things and they made things. But they were not real. They were imaginary. Nobody was able to make a real robot. The first real robot was made in 1961. It was called Unimate. It was used to help make cars. It looked like a giant arm.
In the future, we will have even more robots. They will do things that we can't do. Or they will do things that we don't want to do. Or they will do things that are too dangerous for us. Robots will help us fight fires. They will help us fight wars. They will help us fight sickness. They will help us discover things.
They will help make life better.
1.As used in paragraph 1, we can understand that something special is NOT ________.
A.normal B.expensive C.perfect D.tired
2.What is the main purpose of paragraph 2?
A.To show how easy it is to make a robot.
B.To tell what a robot is.
C.To describe the things a robot can do.
D.To explain the difference between a robot and a machine.
3.According to the passage, when was the first real robot made?
A.1961. B.1900.
C.2003. D.2000 years ago.
4.Using the information in the passage as a guide, which of these gives the best use of a robot?
A.To help make a sandwich. B.To help tie shoes.
C.To help read a book. D.To help explore Mars.
5.Which of these statements correctly summarizes how the author of this passage feels about robots?
A.Robots are old. B.Robots are confusing.
C.Robots are helpful. D.Robots are dangerous.
