Question

Many people suffer from color blindness in some way. Women are luckier, only about one in two hundred is affected 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 can not see deep red. He may think that red, orange and yellow are all shades 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.

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 nearly dark. They show us shape but no color.

Some insects have favorite colors. Mosquitoes (蚊子) like blue but do not like yellow. Red light will not attract insects, but a blue lamp will. In a similar way human beings also have favorite colors. Yet we are lucky. With the aid of the cones in our eyes we can see many beautiful colors 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(看不见的)colors around.

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

A. Women are more careful.

B. There are few color-blind women.

C. Women are fonder of driving than men.

D. Women are weaker but quicker in thinking

2.This passage is mainly about ________.

A. color and its surprising effects

B. women being luckier than men

C. danger caused by color blindness

D. color blindness

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

A. tell orange from yellow

B. see in weak light

C. kill mosquitoes

D. tell different shapes

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

A. red light    B. yellow light

C. blue light    D. green light

Answer

1.B

2.D

3.A

4.C

【解析】

本文是一篇科普说明文，解释了色盲和色盲的种类，动物和人类所患色盲的差异。

1.细节理解题。根据第一段第二句Women are luckier, only about one in two hundred is affected in this matter. 可知女性患色盲的人比率更小。所以乘坐女司机的车更安全。故B项正确。

2.主旨大意题。根据文章主题句Many people suffer from color blindness in some way. 可知很多人都患色盲，文章对色盲的种类及影响做了详细说明。故D项正确。

3.推理判断题。根据第三段23句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.可知“cones”帮助我们辨别颜色。故A项正确。

4.细节理解题。根据最后一段第二句Mosquitoes (蚊子) like blue but do not like yellow.可知蚊子喜欢蓝色，不喜欢黄色。那么我们可以利用蓝色吸引蚊子，集中杀死蚊子。故C项正确。