Question

12．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．
51．The passage is mainly aboutD．
A．color and its surprising effects．
B．women being luckier than men
C．danger caused by color blindness  
D．color blindness
52．According to the passage，with the help of the"cones"，we canD．
A．tell different shapes                   
B．see in a weak light
C．kill mosquitoes                      
D．tell orange from yellow
53．Why do some people say it is safer to be driven by women？B
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．
54．Which of the statements about the color-blind is true？A
A．Not all of them 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．
55．We can attract and kill mosquitoes by using aC．
A．red light     B．yellow light     C．blue light      D．green light．

Answer 1

分析 本文属于说明文阅读，作者通过这篇文章主要向我们描述了色盲的话题，在文章中介绍了色盲形成的原因，并说明了昆虫对颜色的偏好．

解答 51．D．主旨大意题．根据文章第二段第一行There are different forms of color blindness．本文主要讲述的就是色盲的话题，故D正确．
52．D．细节理解题．根据第二段5，6行．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．cones帮助我们辨别颜色，说明D项正确．
53．B．细节理解题．根据文章第一段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!说明女性色盲的笔男性少，故B正确．
54．A．推理判断题．根据文章第二段There are different forms of color blindness可知色盲分为很多种类，不是每个人都有同样的色盲问题，故A正确．
55．C．推理判断题．根据文章倒数第五行Mosquitoes prefer blue to yellow．说明蚊子喜欢蓝色的光线，故我们可以利用蓝色的光线来吸引蚊子进行捕杀．故C正确．

点评 考察学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．