高考阅读专练之能力提高篇 (13)

2008-03-26 15:58:06   来源:转载   评论:0 点击:

    The head of a homing pigeon is comparatively small, but its brain is one quarter larger than that of the ordinary pigeon. The homing pigeon is very intelligent and will persevere to the point of stubbornness (顽强) ;some have been known to fly a hundred miles off course to avoid a storm.  
    Some homing pigeon experts claim that this bird is gifted with a form of built-in radar that helps it find its own loft after hours of flight, for hidden under the headfeathers are two very sensitive ears, while the sharp prominent (突出的) eyes can see great distances in daytime. 
    Why do homing pigeons fly home? They are not unique in this inherent skill; it is found in most migratory birds, in bees, ants, toads and even turtles, which have been known to travel hundreds of miles to return to their homes. But in the animal world, the homing pigeon alone can be trusted with its freedom and trained to carry out the missions that people demand. 

1. What is the purpose of the passage?
A. To convince the reader to buy a homing pigeon. 
B. To inform the reader about homing pigeons and their training.
C. To protect homing pigeons against the threat of extinction. 
D. To encourage the owners of homing pigeons to set the birds free. 
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