2019年雅思考试听力必看材料精编汇总10

许多考生觉得雅思听力难，无法理解，而且速度快。主要的问题是，他们通常会少听，漏听，在答题方面很受限制。这就需要我们在平时的备考中加强对听力的训练，小编特意为大家整理这篇听力材料，如果想要了解更多相关内容，就到坦途网雅思考试频道查看吧！

Is It Raining Diamonds On Uranus

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.

"This is opening the door to study of the interesting types of chemical reactions taking place inside planets and brown dwarfs," Jeanloz said. "Now that technology is able to reproduce the high pressures and temperatures found there, we are getting much better quality information on the chemical reactions taking place under these conditions."

小编为大家整理的内容到这里就结束了，想要考好听力就要积累大量的词汇，然后还需要给自己营造一个良好的氛围和英文生活环境，在这样的环境下，小编相信大家的听力能力一定很快就会提升的，最后也希望大家在雅思考试成绩查询结果出来时，看到的都是自己满意的成绩！