What is color? Why do some of the things

题型:阅读理解

问题:

What is color? Why do some of the things around us look red, some green, others blue?

Colors are really made by deflected (反射) light. We see color because most of the things reflect 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 (吸引) and turned into (变成) heat (热能).The darker the color is, the less light is reflected, the more light is taken in. So dark-colored clothes are warmer in the sun than light-colored clothes.

小题1:When something reflects light, we can _____.

A.see its color

B.see its heat

C.not see its color

D.see nothing小题2:Something looks white because it reflects _____.

A.some light

B.no light

C.all light

D.most light小题3:the dark-colored clothes are warm because ____ is taken in.

A.more light

B.less light

C.more color

D.less color小题4:In summer ______ make people feel cool.

A.dark-colored clothes

B.red-colored clothes

C.green-colored clothes

D.light-colored clothes小题5:What’s the best title(标题)of this passage( 短文 )?

A.Dark color

B.Color

C.Heat

D.Clothes

考点:健康环保类阅读科教类阅读
题型:阅读理解

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A.低渗性脱水

B.高渗性脱水

C.低钾血症

D.高钾血症

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题型:阅读理解

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A.渗透剂的渗透特性和渗透剂的去除特性 

B.渗透剂的闪点 

C.渗透剂的价格 

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A.指肉芽组织增生形成的结节状病灶

B.病灶呈结节状,境界清楚

C.结核病为肉芽肿性炎

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