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(熱能). 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

1.A

2.C

3.A

4.D

【解析】

試題分析：這篇短文告訴了我們顏色是怎樣產(chǎn)生的，這是因?yàn)榇蠖鄶?shù)的物體都反射光。紅色的東西反射紅色的光線，同樣綠色的東西反射綠色的光線。而白色的東西反射所有顏色的光線。

1.細(xì)節(jié)理解題。根據(jù)短文第二段中We see colours because most of the things reflect light.可知，因?yàn)榇蠖鄶?shù)物體都能放射光，所以我們能看到顏色。故選A。

2.細(xì)節(jié)理解題。根據(jù)短文第二段中If something reflects all light, it is white可知，如果某個(gè)物體反射所有的光，那么它就是白色的。故選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，黑色反射的光比較少，吸收的光比較多，因此黑色的衣服比淺色的衣服更暖和。故選A。

4.推理判斷題。根據(jù)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?yàn)楹谏�的衣服吸收的光線多，因此它要比淺色的衣服更暖和。所以在炎熱的夏天，我們應(yīng)該穿淺色的衣服。故選D。

考點(diǎn)：科普類短文閱讀。