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简单的英语口语短文

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  英语是世界上普遍使用的语言,许多国家都在强化和改革基础教育阶段的英语教学,英语教学得到了极大的重视,尤其是初中英语口语教学也越来越受到关注。小编精心收集了简单的英语口语短文,供大家欣赏学习!

  简单的英语口语短文篇1

  Vision

  视觉

  Human vision like that of other primates has evolved in an arboreal environment. In the densecomplex world of a tropical forest, it is more important to see well than to develop an acutesense of smell. In the course of evolution members of the primate line have acquired large eyes while the snout has shrunk to give the eye an unimpeded view.

  人类的视觉,和其它灵长目动物的一样,是在丛林环境中进化出来的。在稠密、复杂的热带丛林里,好的视觉比灵敏的嗅觉更加重要。在进化过程中,灵长目动物的眼睛变大,同时鼻子变小以使视野不受阻碍。

  Of mammals only humans and some primates enjoy color vision. The red flag is black to the bull. Horses live in a monochrome world.Light visible to human eyes however occupies only a very narrow band in the whole electromagnetic spectrum. Ultraviolet rays are invisible to humans though ants and honeybees are sensitive to them. Humans have no direct perception of infrared rays unlike the rattlesnake which has receptors tuned into wavelengths longer than 0.7 micron. The world would look eerily different if human eyes were sensitive to infrared radiation. Then instead