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    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 shades of green. Sometimes a person cannot tell the difference between blue and green. In rare cases an unlucky man 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 and 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. A red light will not attract insects, but a blue lamp will. In a similar way human being 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.
    小题1:According to the passage, with the help of the "cones", we can        
    A．tell different coloursB．see in a weak light
    C．tell different shapesD．tell orange from yellow
    小题2: 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.
    小题3:Which of the statements about the color-blind is true?
    A．Not all of them have the same problem in recognizing colors.
    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.
    小题4:We can attract and kill mosquitoes by using a        
    A．red lightB．yellow light
    C．blue lightD．green light

    小题1:A
    小题2:B
    小题3:A
    小题4:B

    试题分析：文中采用了举例分别介绍了色盲的各种情况。目前人类色盲现象相当奇怪，难以解释清楚。
    小题1:这是细节理解题。根据These help us to see in a bright and tell difference between colors. 故选A。
    小题2:这是细节理解题。根据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.
    故选B。
    小题3:这是细节理解题。根据There are different forms of color blindness.故选A。
    小题4:这是细节理解题。根据Mosquitoes(蚊子) like blue but do not like yellow. 故选B。
    点评：本文都是细节理解题，做起来比较容易。做细节理解题应注意认真核查题干和原文的异同，进而做出正确的判断。
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