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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 if 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 can’t tell the differences between blue and green. In rare cases an unlucky man sees everything in shades of green--- a strange world in deed.
Color blindness in human beings is a strange thing to explain. In a single eye there are millions very small things called “cones”. These help us see in a bright day and tell the differences between colors. There are also millions of “rods”, but these are used for seeing when it is nearly dark. They show us shapes(形狀) but not color. Some insects have favorite colors. Mosquitoes like blue but do not like yellow. A red light will not attract insects but a blue lamp will. In similar way human being also have favorite colors. Yet we are lucky. With the aid of 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.
小題1:The passage is mainly about ______.
A.color and its surprising effects on drivers
B.women being luckier than man in that fewer of them are color blind
C.danger caused by color blindness
D.color blindness and how our eyes tell different colors and shapes
小題2:According to the passage, with the help of “cones” we can _____.
A.tell different colorsB.see in weak light
C.tell different shapesD.tell orange from yellow
小題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.
小題4:Which of the following statements about color blind people is true?
A.Not all of them have the same problem in recognizing colors.
B.None of them can see deep red but all can tell blue from green.
C.None of them can tell blue from green but all can see deep red.
D.All of them are lucky enough to see everything in shades of green.

小題1:D
小題2:A
小題3:B
小題4:A

試題分析:色盲是什么原因引起的?色盲患者無法正確分辨顏色;而我們能分辨顏色和形狀則是靠了眼睛里的兩種細胞:視桿細胞和視錐細胞。
小題1:主旨大意題。本文主要講了色盲的表現(xiàn)和人的眼睛看見形狀和顏色的原因。故選D。
小題2:細節(jié)理解題。由“These help us see in a bright day and tell the differences between colors.”可知視錐細胞可以讓我們分辨不同的顏色。故選 A。
小題3:細節(jié)理解題。由“Women are luckier, only about one in two hundred if affected in this matter. Perhaps, after all, it is safer to be driven by a woman. ”可知女性色盲的比例要少于男性,因此開車或許更安全。故選 B。
小題4:細節(jié)理解題。由“There are different forms of color blindness. ”可知色盲患者的類型并不相同。 故選A。
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