精品一区二区中文在线,无遮挡h肉动漫在线观看,国产99视频精品免视看9,成全免费高清大全

新東方背誦46-50

時間:2023-05-04 21:10:50 大學(xué)英語 我要投稿
  • 相關(guān)推薦

新東方背誦50篇46-50

46.Vision by

 

Human vision like that of other primates has evolved in an arboreal environment. In the dense complex world of a tropical forest, it is more important to see well that to develop an acute sense 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. 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 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 of the darkness of night, we would be able to move easily in a strange shadowless world where objects glowed with varying degrees of intensity. But human eyes excel in other ways. They are in fact remarkably discerning in color gradation. The color sensitivity of normal human vision is rarely surpassed even by sophisticated technical devices.

 

 

47 Folk Cultures

 

A folk culture is a small isolated, cohesive, conservative, n

《国产自产在线视频一区,洗澡被公强奷30分钟视频,亚洲αv在线精品糸列.doc》
将本文的Word文档下载到电脑,方便收藏和打印
推荐度:
点击下载文档

【新東方背誦46-50】相關(guān)文章:

背誦的作文06-12

背誦大賽作文10-13

背誦課文作文09-29

新東方體會的作文07-25

新東方的勵志名言10-26

新東方英語培訓(xùn)心得11-09

中秋節(jié)背誦古詩09-09

新東方實習(xí)報告三篇07-28

新東方小學(xué)生評語11-25

背誦_關(guān)于背書的初中日記02-15

新東方背誦50篇46-50

46.Vision by

 

Human vision like that of other primates has evolved in an arboreal environment. In the dense complex world of a tropical forest, it is more important to see well that to develop an acute sense 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. 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 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 of the darkness of night, we would be able to move easily in a strange shadowless world where objects glowed with varying degrees of intensity. But human eyes excel in other ways. They are in fact remarkably discerning in color gradation. The color sensitivity of normal human vision is rarely surpassed even by sophisticated technical devices.

 

 

47 Folk Cultures

 

A folk culture is a small isolated, cohesive, conservative, n