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托福考试托福阅读练习题:排除列举题9

中华考试网   2013-07-01   【

  Flatfish

  Members of the flatfish family, sand dabs and flounders, have an evolutionary advantage over many colorfully decorated ocean neighbors in that they are able to adapt their body coloration to different environments. These aquatic chameleons have flattened bodies that are well-suited to life along the ocean floor in the shallower areas of the continental shelf that they inhabit. They also have remarkably sensitive color vision that registers the subtlest gradations on the sea bottom and in the sea life around them. Information about the coloration of the environment is carried through the nervous system to chromatophores, which are pigment-carrying skin cells. These chromatophores are able to accurately reproduce not only the colors but also the texture of the ocean floor. Each time that a sand dab or flounder finds itself in a new environment, the pattern on the body of the fish adapts to fit in with the color and texture around it.

  1. It is NOT stated in the passage that sand dabs

  A are a type of flatfish

  B are in the same family as flounders

  C have evolved

  D are colorfully decorated

  答案:D

  2. According to the passages, it is NOT true that sand dabs and flounders

  A have flattened bodies

  B live along the ocean floor

  C live in the deepest part of the ocean

  D live along the continental shelf

  答案:C

  3. All of the following are stated about the vision of sand dabs and flounders EXCEPT that they are

  A overly sensitive to light

  B able to see colors

  C able to see the sea bottom

  D aware of their surroundings

  答案:A

  4. It is NOT true that chromatophores

  A are skin cells

  B carry pigment

  C adapt to surrounding colors

  D change the ocean floor

  答案:D

  5. It is NOT mentioned in the passage that sand dabs and flounders

  A move to new environments

  B adapt their behavior

  C can change color

  D adapt to textures around them

  答案:B

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