The Chicken Came Before the Egg
  来源:高中英语教学交流
发布时间:2011年05月07日
查看次数:
温馨提示:双击屏幕可以自动滚屏,点击可以停止。电脑和手机访问效果相同
内容提要:科学家称先有鸡再有鸡蛋?
    Which came first, the chicken or the egg? This is one of life’s oldest questions and everyone has their own opinion. Now scientists believe they have cracked it and have unscrambled this mystery. Researchers from Sheffield and Warwick Universities in England discovered the answer by mistake. They used a super computer to zoom in on the shell-making process while a new shell was forming. They said it all boils down to one protein called OC17 that is essential for forming eggshell. This is only found inside a chicken's ovaries, which is proof that the chicken came first. The team was originally looking at how animals and birds make eggshells but suddenly made their surprising discovery. The big question now is where chickens came from. The answer to that is from dinosaurs.

    The research team said eggshells are one of nature’s most amazing creations. Professor John Harding from Sheffield University told reporters: "Understanding how chickens make eggshells is fascinating in itself but can also give clues towards designing new materials and processes." Eggshells are very lightweight but incredibly strong. The most cutting-edge materials designed by the world’s top engineers cannot produce anything as brilliant as an eggshell. Professor Harding added that studying eggshells could help find new answers to bone-healing processes and materials used by the construction industry: "Nature has found innovative solutions that work for all kinds of problems in materials science and technology -- we can learn a lot from them," he said.
  
·上一条:5 Real-Life
·下一条:Lang Lang,Th
网站首页 成绩查询 用户中心
班级管理 填报志愿 亲子教育
英语科组 辅助教学 资源共享
美文妙乐 教学教案 双语新闻
论文相关 教学软件 广东高考
阳东一中 学习方法 高考资讯
2019年11月13日1:22:23
星期三 【第11周】

提示:本站所有的内容在电脑和微信查看的效果都是一样的。
电脑版网址http://www.zshunj.cn
http://www.yykz.net

关注本站微信公众平台方法
通过微信查找公众号
“高中英语教学交流网”
微信