There are many colors in nature. But do you know if a color has weight? I think you’ll say “no”. But I am afraid you are wrong. If you don’t believe, you may do a small experiment.

First, put two objects with the same weight into two boxes. Then cover the box. Third, wrap one box with a red piece of paper, the other with a white piece of paper. OK. Now hold the boxes with your hand one by one. It is certain that you will think the red one is a little heavier.

Why do you think so? A scientist found that different colors have different weight in a man’s mind. So he did many tests and at last he got the result. That is to say, every color has its own weight in our mind and their order is the same. The heaviest color is red, then blue, green, orange, yellow and white.

The scientist told us that colors also have smell. Can you smell the color? Of course not. Then why did the scientist say so? That is because every color stands for a kind of light with a certain wavelength. It reaches our brain through sense organs.

According to this discovery, scientists say that people accept the colors they like, and refuse the colors they hate. So your body and mind will be healthy by using the colors you like. Or you’ll be nervous or even get ill. For example, if you stay in a room with red windows, wallpapers and furniture for two hours, you’ll feel you have been there for four hours. But if the room is blue,? you’ll feel you have been there for only an hour. Another example, if a person walks out of a red room and into a blue room, his temperature will fall. That means our body temperature will change with different colors.

1.The purpose of the second paragraph is to tell us ___________.

A. a red box is heavier than a white one

B. a color has weight in one’s mind

C. white paper is lighter than red paper

D. you can know the weight of a color by holding it

2.Why did the scientist say colors have smell?

A. Because people can sense the light from colors.

B. Because we can smell colors with our nose.

C. Because every color has its own sweet smell.

D. Because every color can give off light of the same length.

3.It can be implied from the text that ___________.

A. colors have orders in weight

B. colors can change the weight of an object

C. people would stay longer in a room with red windows

D. colors can affect our mood and health

4.This passage is probably a ___________.

A. book review????????????? ????????????? B. fiction novel????????????? ????????????? C. fairy tale????????????? ????????????? D. science report

There are many colors in nature. But do you think that a color has weight? I think you’ll say “no”. But I am afraid you are wrong. If you don’t believe it, you may do a small experiment.

First, put two objects with the same weight into two boxes. Then cover the boxes. Third, wrap（包裹）one box with a red piece of paper, the other with a white piece of paper. OK. Now hold the boxes with your hand one by one. It is certain that you will think the red one is a little heavier.

Why do you think so? A scientist found that different colors have different weights in a man’s mind. So he did many tests and at last he got the result. That is to say, every color has its own weight in our mind.

The scientist told us that colors also have smell. Can you smell the color? Of course not. Then why did the scientist say so? That is because every color stands for a kind of light with a certain wavelength. It reaches our brain through sense organs (器官).

According to this discovery, scientists say that people accept the colors they like, and refuse the colors they hate. So your body and mind will be healthy by using the colors you like. Or you’ll be nervous or even get ill. For example, you like blue and hate red. If you stay in a room with red windows, wallpaper and furniture for two hours, you’ll feel you have been there for four hours. But if the room is blue, you’ll feel you have been there for only an hour. And, if a person walks out of a blue room and into a red room, his temperature will rise. That means our body temperature will change with different colors.

53. From the experiment, we know that ________.

　 A. the red box is heavier than the white one

　 B. colors can change the weight of an object

　 C. colors have different weights in people’s mind

　 D. the white piece of paper is lighter than the red one

54. When we walk from a red room into a blue one, ________.

A. we will feel very nervous

B. our body weight will change

C. our body temperature will fall

D. we will notice different smells

55. This passage is probably ________.

　 A. a science report　　　　　　　　　　　 B. a news story　　

C. a historical record D. an advertisement

When we see a cigarette box, we’ll see “ Smoking is harmful to your health” on it. Children are not    36  to smoke by their parents or teachers. But in many countries  37 is becoming a bigger problem for young people. Most smokers   38  in their teens or earlier.
Some students think smoking is very cool, and they can see many people smoking around them. They want to have a   39 .
“If young people start smoking early, they will probably get addicted （上瘾的）to nicotine（尼古丁）. And it will be very hard to  40   later on,” said a professor. A study shows smoking is a problem for many Chinese teens.  41    can we do to make them stop smoking?
Some people think we can make a law. Teenagers under 18 are not allowed to smoke,   42   they should be fined. Parents should give up smoking. They can set an example （树立榜样）43   their children.
“Every year about four million people die of smoking. And if people  44   smoking, the number will increase （增加）10 million a year from now on,” said the World Health Organization. So we must learn and tell others about the  45  of smoking.