Question

What is colour? Why do some of the things around us look red, some green, others blue? Colours are really made by reflected(反射) light.

We see colours because most of the things reflect light. Something is red, for it reflects most of the red light. In the same way, if something is green it reflects most of the green light. If something reflects all light, it is white.

Some of the light is reflected and some is taken in(吸收) and turned into heat(热能). The darker the colour is, the less light is reflected, the more light is taken in. so dark-coloured clothes are warmer in the sun than light-coloured clothes.

1.When something reflects light, we can _______________

A. see its colour                        B. see its heat

C. not see its colour                    D. see nothing

2.Something looks white because it reflects_____________.

A. some light        B. no light

C. all light         D. most light

3.The dark-coloured clothes are warm because ___________is taken in.

A. more light     B. less light

C. more colour     D. less colour

4.In summer, ______________ make people feel cool.

A. dark-coloured clothes      B. red-coloured clothes

C. green-coloured clothes     D. light-coloured clothes

Answer

1.A

2.C

3.A

4.D

【解析】

试题分析：这篇短文告诉了我们颜色是怎样产生的，这是因为大多数的物体都反射光。红色的东西反射红色的光线，同样绿色的东西反射绿色的光线。而白色的东西反射所有颜色的光线。

1.细节理解题。根据短文第二段中We see colours because most of the things reflect light.可知，因为大多数物体都能放射光，所以我们能看到颜色。故选A。

2.细节理解题。根据短文第二段中If something reflects all light, it is white可知，如果某个物体反射所有的光，那么它就是白色的。故选C。

3. darker the colour is, the less light is reflected, the more light is taken in. so dark-coloured clothes are warmer in the sun than light-coloured clothes.可知，黑色反射的光比较少，吸收的光比较多，因此黑色的衣服比浅色的衣服更暖和。故选A。

4.推理判断题。根据短文最后一段中The darker the colour is, the less light is reflected, the more light is taken in. so dark-coloured clothes are warmer in the sun than light-coloured clothes.可知，因为黑色的衣服吸收的光线多，因此它要比浅色的衣服更暖和。所以在炎热的夏天，我们应该穿浅色的衣服。故选D。

考点：科普类短文阅读。