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2017年托福考试阅读复习17

分类:托福模拟题   更新:2017/9/18   来源:网络

  青蛙的两种鸣叫方式,一种音量小而简单,一种音量大而复杂。雌性青蛙更喜欢后者,两个科学家对此进行对照实验,并发现能够推广。同时也说到鸣叫方式和捕食者之间的关系。

  生物类。一种青蛙的两种鸣叫方式。一种音量小而简单,一种音量大而复杂。雌性青蛙更喜欢复杂的那种,提到了两个科学家为此做的对照试验,发现这一情况可以推广化。同时也讲了鸣叫方式和捕食者的关系。

  参考练习:

  TPO 11:Begging by Nestlings

  知识拓展:

  https://en.wikipedia.org/wiki/Frog_hearing_and_communication

  Frog hearing and communication

  From Wikipedia, the free encyclopedia

  Frogs and toads produce a rich variety of sounds, calls, and songs during their courtship and mating rituals. The callers, usually males, make stereotyped sounds in order to advertise their location, their mating readiness and their willingness to defend their territory; listeners respond to the calls by return calling, by approach, and by going silent. These responses have been shown to be important for species recognition, mate assessment, and localization. Beginning with the pioneering experiments of Robert Capranica in the 1930s using playback techniques with normal and synthetic calls, behavioral biologists and neurobiologists have teamed up to use frogs and toads as a model system for understanding the auditory function and evolution. It is now considered an important example of the neural basis of animal behavior, because of the simplicity of the sounds, the relative ease with which neurophysiological recordings can be made from the auditory nerve, and the reliability of localization behavior. Acoustic communication is essential for the frog's survival in both territorial defense and in localization and attraction of mates. Sounds from frogs travel through the air, through water, and through the substrate. The neural basis of communication and audition gives insights into the science of sound applied to human communication.

  Sound communication Behavioral ecologyFrogs are more often heard than seen, and other frogs (and researchers) rely on their calls to

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