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 (影響) 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(陰影) 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 (昆蟲) 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 (陳述) 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】

試題分析：文章講的是色盲的相關(guān)知識。男性中，十個(gè)人中會有一個(gè)人患有色盲，而女性的概率是二百分之一。色盲有不同的類型，有的分不清紅色和綠色，有的無法分辨藍(lán)色和綠色。

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，文章講的是色盲，故選A。

2.things called “cones”. These help us to see in a bright light and to tell difference between colors.”可知，眼球中的錐體細(xì)胞幫助人們看到強(qiáng)光下的物體，還幫助我們分辨顏色，故選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，色盲有不同的類型，有的人分不清顏色的深淺，有的人分不清藍(lán)色和綠色，有很少的人會把一切都看成是綠色的。說明不是所有患有色盲的人都有同一種問題，故選D。

4.Mosquitoes prefer blue to yellow.”可知，蚊子喜好藍(lán)色的光，因此，我們可以用藍(lán)色的光來滅蚊，故選C。

考點(diǎn)：生活類短文閱讀