Question

1 

About ten men in every hundred have the trouble of color blindness in some way. Women are luckier, only about one in two hundred is affected（感染）in this matter. Perhaps, after all ,it is safer to be driven by a woman.

There are different kinds of color blindness. For example, a man cannot see deep red. He may think that red, orange and yellow are all shades (影子) of  green. Sometimes a person can’t tell the difference between blue and green. Only a few unlucky men may see everything in shades of green— a strange world indeed.

Color blindness in human beings is a different thing to explain. In only one eye there are millions of very small things called “cones（錐狀細胞）” . These help us to see in the bright light and to tell differences between colors. These are also millions of “rods“（桿狀細胞），but these are used for seeing when it is nearly dark. They show us shapes but not colors.

Some insects have favorite colors. Mosquitoes(蚊子) like blue but do not like yellow. A red light will not attract insects, but a blue light will. Human beings 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.

1.“Color blindness” means           in Chinese.

A. 盲目        B. 無色      C 色盲    D 討厭顏色

2. Some people say it’s safer to be driven by women because         .

A. women drive more carefully

B. women are better at driving than men

C. women can see things more clearly

D. there are fewer color — blind women

3.With the help of the “cones”, we can          .

A. tell different shapes        B. kill insets

C. see in the dark            D. tell orange from yellow

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

A. red       B. yellow     C. blue     D. green

5. Which of the following sentences about color blindness is TRUE?

A. None of men can see deep red.

B. Not all of men have the same problem in recognizing colors.

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

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

 

Answer 1

【答案】

 

1.C

2.D

3.D

4.C

5.B

【解析】

試題分析：

1.根據(jù)詞的意思可知：color“顏色”，blindness“失明”，所以color blindness就是“色盲”的意思。

2.通過閱讀第一段，我們可知，婦女開車之所以更安全，是因為她們很少是色盲，很容易區(qū)分顏色，特別是交通燈。所以本題選D。

3.通過These help us to see in the bright light and to tell differences between colors.可知，“cones”能幫助我們分辨顏色，所以本題應(yīng)該選D“將黃色與橙色區(qū)分開”。

4.通過 Mosquitoes(蚊子) like blue 可知，我們應(yīng)該利用蚊子喜歡藍色的特性，用藍光吸引蚊子，從而消滅文中。所以本題選C。

5.通過閱讀全文可知，ACD都太絕對，是錯誤的；而B的意思是“并非所有的男人在認識顏色方面存在相同的問題。”很明顯是正確的。

考點：本題考查說明文。

點評：本文是有關(guān)色盲的文章。文章從什么是色盲，色盲的種類，色盲的原因以及動物的色盲等四個方面講述了色盲。完成本題時應(yīng)該熟讀短文，注意對色盲一些細節(jié)的描述，應(yīng)該根據(jù)已有的信息，加以合理的推測。還應(yīng)注意上下文之間的關(guān)系。