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  3. 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)

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)

admin2009-06-21  64
问题 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 colour 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. If it doesn’t reflect any light, it is black.
Some of the light is reflected and some is taken in(吸收)and turned into (变成)heat (热能). The darker the colour is, the less light is reflected, and die more light is taken in. So dark-coloured (深色的) clothes are warmer in the sun than light-coloured clothes.
选项 A、see its colour
B、see its heat
C、not see its colour
答案A
解析 根据第二段头两句应选[A]。
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