文档介绍：2012年考研英语阅读理解模拟试题及答案
2012年考研英语阅读理解模拟试题及答案(一)
  Flatfish, such as the flounder, are among the few vertebrates t is adaptive or selectively neutral. As for the left-eyed and right-eyed flatfish, their difference, however striking, appears to be an evolutionary red herring.
　　1. According to the text, starry flounder differ form most other species of flatfish in that starry flounder
　　[A] are not basically bilaterally symmetric.
　　[B] do not become asymmetric until adulthood.
　　[C] do not all share the same asymmetry.
　　[D] have both eyes on the same side of the head.
　　2. Which of the following best describes the organization of the text as a wh
ole?
　　[A] A phenomenon is described and an interpretation presented and rejected.
　　[B] A generalization is made and supporting evidence is supplied and weighed.
　　[C] A contradiction is noted and a resolution is suggested and then modified.
　　[D] A series of observations is presented and explained in terms of the dominant theory.
　　3. The text supplies information for answering which of the following questions?
　　[A] Why are Japanese starry flounder mostly left-eyed?
　　[B] Why should the eye-sidedness in starry flounder be considered selectively neutral?
　　[C] Why have biologists recently become interested in whether a characteristic is adaptive or selectively neutral?
　　[D] How do the eyes in flatfish migrate?
　　4. Which of the following is most clearly similar to a cline as it is described in the second paragraph of the text?
　　[A] A vegetable market in which the various items are grouped according to place of origin.
　　[B] A wheat field in which different varieties of wheat are planted to yield a crop that will bring the maximum profit.
　　[C] A flower stall in which the various species of flowers are arranged according to their price.
[D] A housing development in which the length of the front struts supporting the porch of each house increases as houses are built up the hill.
　5. Which