综合一区欧美国产,99国产麻豆免费精品,九九精品黄色录像,亚洲激情青青草,久久亚洲熟妇熟,中文字幕av在线播放,国产一区二区卡,九九久久国产精品,久久精品视频免费

您現(xiàn)在的位置: > Language Tips > Easy English > Odd Question  
 





 
為什么有的人是左撇子?
[ 2006-12-27 10:58 ]

在這個右撇子占絕對多數的世界,卻有這樣一群左撇子:他們之中天才輩出,他們對人類文明的貢獻和對人類歷史、生活的影響遠遠高于他們在人口中的比例。左撇子到底緣何而來?我們來看看科學家的解釋。

"Because lefties do it right!"

"Because left handed people are the only people in their right minds?"

This question is definitely not a no-brainer.

Two theories predominate in the debates that rage on as to why a mere 4% of the population is left-handed. Most authorities agree, to the relief of many a mother of a left-handed child, that if the child prefers using the left hand, and functions well with it, there is no need to correct this "condition."

One theory centers on the two halves of the brain, i.e. the left half and the right half, each of which functions differently. Medical science believes that the left half of the brain predominates over the right half. The stem of this theory is the fact that nerves from the brain cross over at neck-level to the opposite side of the body, and nerves from the other side of the brain reciprocate. The end result is that the opposite sides of the body are supplied by the opposite sides of the brain.

The predominant left half of the brain, which graciously supplies the right half of the body, theoretically renders it more skillful in reading, writing, speaking, and working, and makes most people right-handed. "Lefties," however, are the product of an inversion, whereas the right half of the brain predominates, and they work best with the left side of their bodies.

Theory number two trickles down to the asymmetrical nature of the body. Examples of the asymmetry, which flows from head to toe, are that the right side of our faces differs slightly from the left, that our legs differ in strength, or that our feet vary in size. One aspect of this asymmetry is that for most people the right hand is stronger than the left.

There is no doubt that all exist in a "right-handed society," which manufactures most basics, including scissors, doorknobs, locks, screwdrivers, automobiles, buttons on clothing, and musical instruments for the 96%. Left-handed people compensate for this snobbery of sorts, by being members of an elite society, which includes many of the greatest geniuses, including Michelangelo, Leonardo da Vinci, and The Useless-Infomaster.

reciprocate: 交叉,交互

(英語點津 Annabel 編輯)

 
 
相關文章 Related Stories
 
         
 
 
 
 
 
         
 
 

48小時內最熱門

     

本頻道最新推薦

     
  Marriage takes work!
  硬幣的名字是怎么來的?
  珍珠是怎樣養(yǎng)殖的?
  Winter solstice(冬至)
  Picture time!

論壇熱貼

     
  i want to have a english name
  “早生貴子”英語怎么說
  日常口語趣味翻譯(It's fun!)
  how to say "彩鈴" in English?
  “天壤之別”英語怎么說?
  翻譯:老鄉(xiāng)見老鄉(xiāng),兩眼淚汪汪




穆棱市| 海林市| 晋城| 防城港市| 墨玉县| 萝北县| 和静县| 宣汉县| 丹东市| 太和县| 浦江县| 浮梁县| 托里县| 凤城市| 余干县| 甘德县| 赤城县| 乌恰县| 岳西县| 怀宁县| 恩施市| 蒲江县| 景谷| 五大连池市| 东平县| 阿巴嘎旗| 聂荣县| 汝城县| 苗栗县| 克东县| 桂阳县| 阿克陶县| 嘉鱼县| 益阳市| 塘沽区| 曲松县| 饶阳县| 长丰县| 鱼台县| 文安县| 阜康市|