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

About ten men in every hundred suffer from color blindness in some way．Women are luckier．Only about one in two hundred is affected in this matter．So some people say it is safer to be driven by women．

There are different forms of color blindness．]n some cases a man may not be able to see deep red．He may think that red，orange and yellow arc all shades（色调）of green．Sometimes a person cannot tell the difference between blue and green．In rare cases an unlucky man may see everything in shades of green--a strange world indeed．

Color blindness in humans is a strange thing to explain．In our eyes there are millions of very small things called “cones”．These help us to see in a bright light and to tell differences between colors．There are also millions of “rods”，but these are used for seeing when it is nearly dark．They show us shapes but no color．

Some insects have favorite colors．Mosquitoes（蚊子）like blue but do not like yellow．A red light will not attract insects，but a blue lamp will．In a similar way humans also have favorite colors．Yet we are lucky．With the aid of the cones in our eyes We can see many beautiful colors by day，and with the aid of the rods we can see shapes at night．One day we may even learn more about the invisible（看不见的）colors around us．

1．With the help of the cones，we can _________．

A．see in a weak light                                   B．tell different shapes

C．kill mosquitoes                                           D．tell orange from yellow

2．Why do some people say it is safer to be driven by women?

A．Women are more careful．

B．There are fewer color blind women．

C．All of them see everything in shades of green．

D．None of them has trouble in recognizing（识别）colors．

3．This passage is mainly about _________．

A．color and its surprising effects                         B．danger caused by color blindness

C．color blindness                                          D．the invisible colors around us