练习的英文懂你英语 Level5 Unit2 Part2

2021年1月9日发(作者：伍律)
L5-U2-P2 英语流利说 5-2-2 懂你英语 Level5 Unit2 Part2
L5-U2-P2-1 Listening : Light and Color
People have wondered about the nature of light and color since ancient
times.
Some people thought that light came from the eye rather than coming
into the eye.
To see, light was projected from our eyes to illuminate things as
we look at them.
Now we know that what we see is mostly reflected light, like the light
from the moon which is reflected sunlight.
Light comes from a light source, such as the Sun, and either enters
our eyes directly or after it has reflected off something.
Light comes from a light
source
and
either
enters our eyes
directly or indirectly, after reflecting off something.
(1) People have wondered about the nature of light and color since
ancient times.
(2) Some people thought that light came from the eye rather than
coming into the eye.
(3) To see, light was projected from our eyes to illuminate things
as we look at them.
(4) Now we know that what we see is mostly reflected light, like the
light from the moon which is reflected sunlight.
Light enters our eyes directly or after it has reflected off
something.
Besides the Sun, what's another example of a direct light source?
-
a fire or flashlight
In 1666, Sir Isaac Newton showed that when light passes through a
prism, it separates into all the other colors.
This clearly demonstrated that light is composed of many different
colors.
The difference between colors is due to their wavelength.
A prism separates light into different colors because each color has
a different wavelength.
The angle at which a color bends in a prism depends on its wavelength.
What determines the color of light? -Its wavelength
The
angle
at which a color
bends
in a prism ...
depends
on
its
wavelength
.
Colors with shorter wavelengths bend more than colors with longer
wavelengths.
This explains why red light bends less than yellow light.
The reason is because its wavelength is longer.
Of the visible colors, violet light has the shortest wavelength, so
it bends the most.
Of the visible colors, which color has the shortest
wavelength?
-violet
The angle at which a color bends in a prism depends on its wavelength.
This clearly demonstrated that light is composed of many different
colors.
Besides the Sun, any object that produces its own light is a direct
light source.

Of the visible colors, which color has the shortest
wavelength?
-violet
A prism separates light into its component colors.
Each color is a single wavelength of light.
A prism separates light into different colors because each color has
a different wavelength.

If you have ever painted, you know that different colors can be
combined to create new colors.
For example, if you add white to a color, you lighten it.
However, the three primary colors, red, blue and yellow cannot be
made by mixing other colors.
It isn't possible to mix any combination of colors to create red,
blue or yellow.
Mixing two primary colors creates a secondary color such as purple,
which is made by mixing blue and red.
Mixing three primary colors creates a tertiary color such as brown
or gray.
How can you create a secondary color?
-Mixing two primay colors.
If you
have ever
painted, you know that different colors
can
be
combined
to create
new colors.
This explains why red light bends less than yellow light.
The primary colors cannot be created by mixing other colors.
Of the visible colors, violet light has the shortest wavelength, so
it bends the most.

Mixing two primary colors creates a secondary color such as purple,
which is made by mixing blue and red.

Which colors cannot be created by combining other colors?
- the
primary colors
What happens to a color if add white to it?
- It gets lighter.
The difference between colors is due to their wavelength.
Purple is made by mixing blue and red.
Colors with shorter wavelengths bend more than colors with longer
wavelengths.

It isn't possible to mix any combination of colors to create red,
blue or yellow.


L5-U2-P2-2 Listening : Color’s Effect
Color are wonderful to look at, but they also affect people in ways
besides sight.
They have a powerful effect on how people feel and behave.
Artists know this and so do business people who want to influence
how people feel about their products and advertisements.
For example, research has shown that people can be more productive
if they are working in a blue room.
The color purple is often linked to wealth and royalty and is seen
as a mysterious, spiritual color.
Some colors have even been associated with changes in blood pressure.
Though color can influence how we feel and act, these effects may
depend on personal and cultural factors.
Therefore, it's important not to believe everything you hear about
the effects of color.
If two things are associated with each other, they ...are connected
in some way.
Though color can
influence
how we feel and
act
, these
effects
may
depend on personal and cultural
factors
. Therefore,
it's important not to
believe
everything you hear about
the
effects
of color.
They have a powerful effect on how people feel and behave.
Some colors have even been associated with changes in blood pressure.
Though color can influence how we feel and act, these effects may
depend on personal and cultural factors.

The color purple is often linked to wealth and royalty and is seen
as a mysterious, spiritual color.

What do effects of color depend on? - personal and cultural factors
Color are
wonderful
to look at, but they also
affect
people in
ways
besides
sight.
They have a powerful
effect
on how people feel and
behave
.
Color are wonderful to look at, but they also affect people in ways
besides sight.
Different colors can be combined to form other colors.
However, the three primary colors, red, blue and yellow cannot be
made by mixing other colors.

Research has shown that people can be more productive if they are
working in a blue room.

Though there are differences between cultures, there is a general
agreement about some colors.
The color red, for example, is a warm color, associated with energy
and excitement in many cultures.
In China, red is associated with fire, energy and good fortune.
On the other hand, one experiment showed that exposing students to
red before taking a test can have a negative effect.
In fact, of all the colors, research shows that red has the most
powerful effect on human behavior.
In China, red is
associated
with fire, energy and good
fortune
.
On the other hand, one
experiment
showed that
exposing
students
to red before taking a test can have a negative
effect.
In fact,
of all the colors,
research
shows that red has the most powerful
effect on human
behavior
.
(1) Though there are differences between cultures, there is a general
agreement about some colors.
(2) The color red, for example, is a warm color, associated with
energy and excitement in many cultures.
(3) In China, red is associated with fire, energy and good fortune.
(4) On the other hand, one experiment showed that exposing students
to red before taking a test can have a negative effect.
Certainly, it's interesting and important to better understand the
psychological effects of light and color.
To gain a better understanding of these effects, more research is
needed.
Mixing two primary colors creates a secondary color.
Purple is made by mixing blue and red.
To see, light was projected from our eyes to illuminate things as
we look at them.
However, the three primary colors, red, blue and yellow cannot be
made by mixing other colors.

The color red, for example, is a warm color, associated with energy
and excitement in many cultures.

In China, red is associated with fire, energy and good fortune.
To gain a better understanding of these effects, more research is
needed.
Mixing three primary colors creates a tertiary color such as brown
or gray.
If you have ever painted, you know that different colors can be
combined to create new colors.

Though there are differences between cultures, there is a general
agreement about some colors.


L5-U2-P2-3 Vocabulary : Verbs for Business 1
To promote: to move someone up in an organization, usually because
she has done a good job.
We're going to promote her to manager.
If we don't promote him, he'll probably be upset.
The opposite of promote is demote.
We shouldn't
promote
anyone unless they really
deserve
it,
which means they have to
prove
themselves.
I don't think she deserves a promotion yet, but her boss is insisting
that we give it to her.
To transfer: to move someone or something from one place to another.