Question

About ten men in every hundred suffer from color blindness in some way. Women are luckier; only about one in two hundred is affected (影响) in this matter. Perhaps, after all, it is safer to be driven by a woman!

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

Color blindness in human beings is a strange thing to explain. In a single eye there are millions of very small things called “cones”. These help us to see in a bright light and to tell difference between colors. There are also millions of “rods”, but these are used for seeing when it is near dark. They show us shape but no color.

Some insects (昆虫) have favorite colors. Mosquitoes (蚊子) prefer blue to yellow. A red light will not attract (吸引) insects, but a blue lamp will. In a similar way human also have favorite colors. Yet we are lucky. With the help of the cones in our eyes we can see many beautiful colors by day, and with the help of the rods we can see shapes at night. One day we may even learn more about the hidden colors around us.

1.The passage is mainly about .

A. color blindness

B. color and its surprising effects.

C. women being luckier than men

D. danger caused by color blindness

2.According to the passage, with the help of the “cones”, we can .

A. tell different shapes

B. see in a weak light

C. kill mosquitoes

D. tell orange from yellow

3.Which of the statements (陈述) about the color-blind is TRUE?

A. None of them can see deep red

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

C. None of them can tell the difference between blue and green.

D. Not all of them have the same problem in recognizing color.

4.We can attract and kill mosquitoes by using a .

A. red light B. yellow light

C. blue light D. green light

 

Answer 1

1.A

2.D

3.D

4.C

【解析】

试题分析：文章讲的是色盲的相关知识。男性中，十个人中会有一个人患有色盲，而女性的概率是二百分之一。色盲有不同的类型，有的分不清红色和绿色，有的无法分辨蓝色和绿色。

1.About ten men in every hundred suffer from color blindness in some way.”和二、三段首句“There are different forms of color blindness. ...Color blindness in human beings is a strange thing”可知，文章讲的是色盲，故选A。

2.things called “cones”. These help us to see in a bright light and to tell difference between colors.”可知，眼球中的锥体细胞帮助人们看到强光下的物体，还帮助我们分辨颜色，故选D。

3.In some cases a man may not be able to see deep red. ...Sometimes a person cannot tell the difference between blue and green. In few cases an unlucky man may see everything in shades of green”可知，色盲有不同的类型，有的人分不清颜色的深浅，有的人分不清蓝色和绿色，有很少的人会把一切都看成是绿色的。说明不是所有患有色盲的人都有同一种问题，故选D。

4.Mosquitoes prefer blue to yellow.”可知，蚊子喜好蓝色的光，因此，我们可以用蓝色的光来灭蚊，故选C。

考点：生活类短文阅读