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A

About ten men in every hundred suffer from colour 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 colour 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.

Colour 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 colours. There are also millions of "rods"? but these are used for seeing when it is near dark. They show us shape but no colour.

Some insects have favourite colours. 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 favourite colours. Yet we are lucky. With the aid of the cones in our eyes we can see many beautiful colours 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 colours around us.

1.The passage is mainly about .

  A.    colour and its surprising effects

B.    women being luckier than men

C.    dangers caused by colour blindness

D.    colour blindness

2.    According to the passage, with the help of the "cones", we can .
A. tell different shapes                         B. see in a weak light

C. kill mosquitoes                            D. tell orange from yellow

3.Why do some people say it is safer to be driven by women?

  A.    Women are more careful.

B.    There are fewer colour-blind women. ,'

C.    Women are fonder of driving than men.

D.    Women are weaker but quicker in thinking.

4.Which of the statements about the colour-blind is TRUE?

  A.    Not all of them have the same problem in recognizing colour.

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.

5.We can attract and kill mosquitoes by using a .

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

Answer 1

1. D主旨大意題。根據(jù)文章第一句話"About ten men in every hundred suffer from colour blindness in some way."以及第二段首句"There are different forms of colour blindness."可知，全文講述的是有關(guān)"色盲"的一些事情，故選D項(xiàng)。

2. D細(xì)節(jié)理解題。根據(jù)第三段中的"…called'cones'. These help us to see in a bright light and to tell difference between colours."可知，答案為D項(xiàng)。

3. B細(xì)節(jié)理解題。根據(jù)第一段中的"Women are luckier; only about one in two hundred is affected in this matter."可知，答案為B項(xiàng)。

4. A 細(xì)節(jié)理解題。根據(jù)第二段首句"There are different forms of colour blindness."可知，答案為A項(xiàng)。

5. C細(xì)節(jié)理解題。根據(jù)最后一段第二句"Mosquitoes prefer blue to yellow."可知，答案為C項(xiàng)。