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 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 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 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 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.
25.The passage is mainly about .
A.color and its surprising effects on drivers
B.Women being luckier than man 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
26.According to the passage,with the help of“cones”we can .
A.tell different colors
B.see in weak light
C.tell different shapes
D.tell orange form yellow
27.Why do some people say it is safer to be driven 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.
28. 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 sec deep red but all can tell blue from green.
C. None of them can tell blue from given but nil can see deep red.
D. Ail of them are lucky enough to see everything in shades of green
DABA
A. Profits enlarging B. Technology developing C. Education investing D. Benefits transferring E. Dominance disappearing F. A nation rising |
The following is an imaginary diary entry written by US president. This diary is part of Global Trends 2025, which was written by the US National Intelligence Council
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The
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Global wealth and economic power will shift from West to East.
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The transition from old fuels to new will be slow, as will the development of new technologies that present feasible alternatives to fossil fuels or help eliminate food and water problems. All current technologies are inadequate, and new ones will probably not be commercially possible by 2025