Question

About ten men in every hundred suffer from colour blindness in some way. Women are luckier. Only about one in two hundred is affected in this matter. So some people say it is safer to be driven by women.

There are different forms of colour blindness. In some cases a man may not be able to see deep red. He may think that red, orange and yellow are all shades（色调）of green. Sometimes a person cannot tell the difference between blue and green. In rare cases an unlucky man may see everything in shades of green—a strange world indeed.

Colour blindness in humans is a strange thing to explain. In our eyes there are millions of very small things called “cones”. These help us to see in a bright light and to tell differences between colours. There are also millions of “rods”, but these are used for seeing when it is nearly dark. They show us shapes but no colour.

Some insects have favourite colours. Mosquitoes（蚊子）like blue but do not like yellow. A red light will not attract insects, but a blue lamp will. In a similar way humans also have favourite colours. Yet we are lucky. With the aid of the cones in our eyes we can see many beautiful colours by day, and with the aid of the rods we can see shapes at night. One day we may even learn more about the invisible（看不见得）colours around us.

1.With the help of the cones, we can .

A. see in a weak light

B. tell different shapes

C. kill mosquitoes

D. tell orange from yellow

2.Why do some people say it is safer to be driven by women?

A. Women are more careful.

B. There are fewer colour-blind women.

C. All of them see everything in shades of green.

D. None of them has trouble in recognizing colours.

3.This passage is mainly about .

A. colour and its surprising effects

B. danger caused by colour blindness

C. colour blindness

D. the invisible colours around us

 

Answer 1

1.D

2.B

3.C

【解析】

试题分析：这篇文章讲述了关于色盲的情况，人类有自己喜欢的颜色，昆虫也有自己喜欢的颜色。

1. our eyes there are millions of very small things called “cones”. These help us to see in a bright light and to tell differences between colours..可知在我们的眼睛里有成千上万的非常小的东西称为“锥”。这些帮助我们看到在明亮的光线，并区分颜色。主要是区分颜色。故选D。

2. are luckier. Only about one in two hundred is affected in this matter.得知妇女是幸运的。只有大约二百个当中才有一个是是那样的。可知选B。

3.综合理解题.通读全文，主要介绍的是色盲的情况，故选C。

考点：考查科技类阅读