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 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 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 near dark. They show us shape but no color.

Some insects have favorite colors. Mosquitoes prefer blue to yellow. A 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 colors around us.

1.The 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

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

A. Women are more careful.

B. There are fewer color-blind women

C. Women are fonder of driving than men.

D. Women are weaker but quicker in thinking.

4.Which of the statements about the color-blind is true?

A. All of them don’t have the same problem in recognizing color.

B. None of them can see deep red.

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

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

Answer

1. D

2. D

3. B

4. A

【解析】

这是一篇说明文。短文主要介绍了男人得色盲的几率要比女人得色盲的几率大，色盲的不同种形式以及色盲是一个很奇怪的现象的原因。

1.主旨大意题。通读全文可知，短文主要介绍了男人得色盲的几率要比女人得色盲的几率大，色盲的不同种形式以及色盲是一个很奇怪的现象的原因。所以这篇短文主要在讨论色盲。故D选项正确。

2.细节理解题。由第三段“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，在一只眼睛里有上百万个叫做“锥体”的非常小的东西。这有助于我们在明亮的光线下看到事物，并区分颜色。所以在“锥体”的帮助下，我们能区分橙色和黄色。故D选项正确。

3.细节理解题。由第一段“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!”可知，女人更幸运，在这件事上只有大约二百分之一的人受到影响。也许，毕竟。由女人开车更安全。所以为什么有些人说女性开车更安全的原因是患色盲的女性较少。故B选项正确。

4.细节理解题。由第二段“ In some cases a man may not be able to see deep red. He may think that red, orange and yellow are all shadows 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.”可知，在某些情况下，男人可能看不到深红色。他可能认为红色、橙色和黄色都是绿色。有时一个人不能分辨蓝色和绿色之间的区别。在极少数情况下，一个不幸的人可能会看到一切都是绿色的——一个奇怪的世界。所以可以看出并不是所有人在识别颜色方面都有相同的问题。故A选项正确。