1,People have wondered about the nature of light and color since ancient times.自古以来，人们就对光和颜色的本质感到好奇。
2,Some people thought that light came from the eye rather than coming into the eye.有些人认为光来自眼睛而不是进入眼睛。
3,To see, light was projected from our eyes to illuminate things as we look at them.看，光线从我们的眼睛投射出来，照亮我们看着的事物。
4,Now we know that what we see is mostly reflected light, like the light from the moon which is reflected sunlight.现在我们知道我们所看到的大部分是反射光，就像月球上反射阳光的光一样。
5,Light comes from a light source, such as the Sun, and either enters our eyes directly or after it has reflected off something.光来自光源，比如太阳，它要么直接进入我们的眼睛，要么在它反射了什么东西之后进入我们的眼睛。
6,In 1666 Sir isaac Newton showed that when light passes through a prism, it separates into all the other colors.1666年，艾萨克牛顿爵士指出，当光通过棱镜时，它会分解成所有其他颜色。
7,This clearly demonstrated that light is composed of many different colors.这清楚地表明光是由许多不同的颜色组成的。
8,The difference between colors is due to their wavelength.颜色之间的差别是由于它们的波长不同。
9,A prism separates light into different colors because each color has a different wavelength.棱镜把光分成不同的颜色，因为每种颜色都有不同的波长。
10、The angle at which a color bends in a prism depends on its wavelength.颜色在棱镜中弯曲的角度取决于它的波长。
11,Colors with shorter wavelengths bend more than colors with longer wavelengths. 波长较短的颜色比波长较长的颜色更容易弯曲。
12,This explains why red light bends less than yellow light.这就解释了为什么红光弯曲小于黄光
13,The reason is because its wavelength is longer.原因是它的波长更长。
14,Of the visible colors, violet light has the shortest wavelength, so it bends the most.在所有可见的颜色中，紫外光的波长最短，所以它的弯曲度最大。
15,If you have ever painted, you know that different colors can be combined to create new colors.如果你曾经画过，你知道不同的颜色可以组合在一起创造出新的颜色。
16,For example, if you add white to a color, you lighten it.例如，如果将白色添加到颜色中，则会使其变亮。
17,However, the three primary colors, red, blue and yellow cannot be made by mixing other colors.但是，红、蓝、黄这三种原色不能通过混合其他颜色来产生。
18,It isn't possible to mix any combination of colors to create red, blue or yellow.不可能混合任何颜色组合来产生红色、蓝色或黄色。
19,Mixing two primary colors creates a secondary color such as purple, which is made by mixing blue and red.混合两种原色会产生第二种颜色，如紫色，它是由蓝色和红色混合而成。
20,Mixing three primary colors creates a tertiary color such as brown or gray.把三种原色混合在一起就形成了第三种颜色，如棕色或灰色。
测验的句子：
1,Different colors can be combined to form other colors.不同的颜色可以组合成其他颜色
2,A prism separates light into its component colors.棱镜把光分成各种颜色
3,Purple is made by mixing blue and red.紫色是由蓝色和红色混合而成的。
4,Each color is a single wavelength of light.每种颜色都是单一波长的光。
