2022英语专业八级改错练习题 (39)

2022-03-03 16:28:00来源:网络

  新东方在线专四专八频道给大家整理的相关内容,希望能够对大家的专四专八考试备考有所帮助,更多有关专四专八的备考内容,欢迎随时关注新东方在线专四专八频道。

  【练习】

  You stare at waterfall for a minute or two, then shift your gaze to its surrounding. What you now see appears to drift upward. You __1

  are board a train in a busy station when suddenly another train next __2

  to your starts moving forward. __3

  For a fraction of a second you feel that your train has lurched backward. These optical illusions occur because the brain is constantly matching its model of reality to signals from the body’s sensors and interpret what must be happening – that your train __4

  might have moved, not the other; that downward motion is now __5

  normal, so a change from it must be perceived as upward motion.

  The sensors that make this magic are two kinds. __6

  Each eye contains about 120 million rods, which provide somewhat blurry black and white vision. These are the windows of night vision; once adapted to the dark, they can detect a candle burnt __7

  ten miles away. Colorful vision in each eye comes from six to seven __8

  million structures called cones. Under ideal conditions, every cone can “see” the entire rainbow spectrum of visible colors, but one type of cone is most sensitive to red, another to green, the third to __9

  blue. By monitoring how many wavelength of light affects the different cones, a connected ganglion cell can determine its “color” and relay that data brainwork. Rods and cones send their messages pulsing an __10

  average 20 to 25 times per second along the optic nerve.

  以上就是新东方在线专四专八频道给大家整理的相关内容,希望对大家有所帮助,更多备考内容,欢迎随时关注新东方在线专四专八频道。


专四专八精选好课 暖心助学

新东方好老师 手把手带学

本文关键字:

2020专四专八复习备考必备资料

关注新东方在线服务号回复【专四/专八词汇】

更多资料
更多>>
  • 2022英语专业八级改错练习题 (13)

      新东方在线专四专八频道给大家整理的相关内容,希望能够对大家的专四专八考试备考有所帮助,更多有关专四专八的备考内容,欢迎随时关注

    来源 : 网络 2022-02-03 16:42:32 关键字 : 专八攻略 专八

  • 2022英语专业八级改错练习题 (9)

      新东方在线专四专八频道给大家整理的相关内容,希望能够对大家的专四专八考试备考有所帮助,更多有关专四专八的备考内容,欢迎随时关注

    来源 : 网络 2022-02-03 16:41:45 关键字 : 专八攻略 专八

  • 2022英语专业八级改错练习题 (7)

      新东方在线专四专八频道给大家整理的相关内容,希望能够对大家的专四专八考试备考有所帮助,更多有关专四专八的备考内容,欢迎随时关注

    来源 : 网络 2022-02-03 16:41:24 关键字 : 专八攻略 专八

  • 2022英语专八人文知识的汇总 (23)

      新东方在线专四专八频道给大家整理的相关内容,希望能够对大家的专四专八考试备考有所帮助,更多有关专四专八的备考内容,欢迎随时关注

    来源 : 网络 2022-02-20 16:31:00 关键字 : 专八攻略 专八

  • 2022英语专八人文知识的汇总 (22)

      新东方在线专四专八频道给大家整理的相关内容,希望能够对大家的专四专八考试备考有所帮助,更多有关专四专八的备考内容,欢迎随时关注

    来源 : 网络 2022-02-20 16:30:00 关键字 : 专八攻略 专八

更多内容
更多>>
更多好课>>
更多>>
更多资料