If we are driving a car or crossing a street, we will stop when the traffic lights turn red. Why do we use red rather than other colors?
As we know, scattering (散射) happens when light goes through the air. For the same media, if the wavelength (波长) is long, the scattering will be short. If the wavelength is short, then the scattering will be long.
Of all light we can see red has the longest wavelength, so the scattering is the weakest. That means the red light travels far. In fact, it travels farther on rainy days.
Using the red light can help drivers in farther areas see the lights. It helps drivers slow down or stop in time. If drivers don’t see the red light until they are close, they may not be able to stop the car in time. An accident may happen. Red can also excite people. We can act more quickly when we see the color red.
In a word, red light helps drivers stop in time and help prevent accidents.
【小题1】______ has the longest wavelength of all light we can see.

If we are driving a car or crossing a street, we will stop when the traffic lights turn red. Why do we use red rather than other colors?

As we know, scattering (散射) happens when light goes through the air. For the same media, if the wavelength (波长) is long, the scattering will be short. If the wavelength is short, then the scattering will be long.

Of all light we can see red has the longest wavelength, so the scattering is the weakest. That means the red light travels far. In fact, it travels farther on rainy days.

Using the red light can help drivers in farther areas see the lights. It helps drivers slow down or stop in time. If drivers don’t see the red light until they are close, they may not be able to stop the car in time. An accident may happen. Red can also excite people. We can act more quickly when we see the color red.

In a word, red light helps drivers stop in time and help prevent accidents.

1.______ has the longest wavelength of all light we can see.

A. Red               B. Green           C. Yellow          D. Black

2.Red light travels farther on ______ days.

A. windy             B. sunny           C. rainy         D. cloudy

3.Red can make people act more quickly because ____________.

A. red can make people happier              B. the scattering of red is very short

C. the scattering of red is very long           D. red can make people more excited

4.The underlined word “prevent” means ______ in Chinese.

    A.逃避               B. 防止            C. 处理         D. 检查

5.The passage mainly tells us ____________.

A. why accidents happen                     B. how the red light travels

C. why we use red traffic lights               D. how to stop in time at traffic lights

What is your favorite color? According to surveys, as few as 8% of people would choose red as their favorite color. The usual winner is blue.

In fact, red isn't really like the color most people think. It has many other meanings. It stands for danger, excitement. It means STOP! Red is the color of blood, which we don't see until something bad happens. It's even been shown with mistakes( red inks in school).

Red also can be seen in English language-often in an unhappy time. We "see red" when we are angry and "turn red" when we're shy. If a person or a company is "in the red", they've spent more money than they have.

However, let's see the good side of the color red! Do you think sports teams that wear the color red are more likely to win games? Also, we know that people may choose red when they buy a sports car.

Everything has two sides. Lets' all have a little more red in our lives and the world will be a better place.

58.How many people would choose red as their favorite color according to the survey?

A. As few as 8% of people. B. More than 8% of people.

C. Less than 8% of people.　　　 D. Not as few as 8% of people.

59. What's people favorite color according to the survey?

A. Green.　　　　 B. Blue.　　　 C. White.　　　 D. Black.

60. Which statement is TRUE about "red"?

A. The sports teams who wear red are easily beaten by the other teams. 　　

B. She is in the red means she has used up her money and has borrowed some.

C. "See red" and ""turn red" have the same meaning which means "shy".

D. When you see some signs in red, you must go near them.

61. The writer wants to tell us ________.

A. to choose color blue　　　　 　　 B. to stop using things in red

C. to think things in both sides　　 D. to choose everything in red