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济南雅思:雅思听力背景文章1

2012-06-28 15:52 来源: 网络部 作者:网络 浏览
核心提示: 关于雅思听力, 济南雅思 专家发现:能听懂材料内容,做不对题的考生大有人在。针对这一问题, 济南雅思 专家分析:平时多阅读了解一些雅思听力的背景文章对听力考试有很大帮助,同时,对其他部分的能力提高也有所帮助。 下面就是 济南雅思 专家为考生们准备
关于雅思听力,济南雅思专家发现:能听懂材料内容,做不对题的考生大有人在。针对这一问题,济南雅思专家分析:平时多阅读了解一些雅思听力的背景文章对听力考试有很大帮助,同时,对其他部分的能力提高也有所帮助。

    下面就是济南雅思专家为考生们准备的雅思听力背景文章,希望对考生们有所帮助。

Berkeley - October 1, 1999 - If experiments at the University of California, Berkeley, are any indication, future explorers of our solar system may well find diamonds hailing down through the atmospheres of Neptune and Uranus.
 
These planets contain a high proportion of methane, which UC Berkeley researchers have now shown can turn into diamond at the high temperatures and pressures found inside these planets.
"Once these diamonds form, they fall like raindrops or hailstones toward the center of the planet," said Laura Robin Benedetti, a graduate student in physics at UC Berkeley.
 
The team, led by Benedetti and Raymond Jeanloz, professor of geology and geophysics, produced these conditions inside a diamond anvil cell, squeezing liquid methane to several hundred thousand times atmospheric pressure. When they focused a laser beam on the pressurized liquid, heating it to some 5,000 degrees Fahrenheit, diamond dust appeared.
 
They report their experimental findings in a paper in the Oct. 1 issue of Science.
The demonstration that methane can convert to diamond as well as other complex hydrocarbons in the interiors of giant planets like Neptune hint at a complex chemistry inside gaseous planets and even brown dwarf stars. Brown dwarfs are small, dim stars barely larger than the largest gas giant planets.

    以上是济南雅思专家为考生们准备的雅思听力背景材料,希望对考生们有所帮助,如果你想快速提高雅思成绩,请登录济南环球雅思学校官方网站:http://www.ieltschina.com.cn或拨打0531-86927699咨询。


   

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