在PTE中,无论是Summarise Spoken Text 还是 Re-tell Lecture的考题大都是从真实的讲座或者演讲中截取的,中间经常经常夹杂很多不同的环境音.很多同学都反映有时未必是听不懂,而是听不到. 鉴于此,墨尔本文波雅思PTE专门为大家总结了真实讲座的PTE练习音频,相比新闻音频来说,整体更加接近PTE考试的真题,内容方面,我们也会为大家提供考试中存在的近似题,最近我们会持续更新,敬请期待!
I am going to start with Newton since this this talk is even labelled after a famous saying of Newton’s and where he started with gravity, how it led to Einstein’s gravity and then to us both experimentally and theoretically, so I think we all know Newton’s Theory of Gravity is probably one of the most successful theories in Science. It lasted more than 200 years and explain the awful lot. He proved that if you had an inverse-square law like this. That it would lead to elliptical orbits around the Sun, which is a thing that’s gonna be the planets or the Moon you have to have. And that all led to something that even published, eventually in the Principia. That’s the clean picture just like when you read our paper, the picture you get is that 100 years’ ago, Einstein predicted the gravitational waves and 100 years’ later, we detected them. The actual story has more complexity than that and even this one does. It turns out that’s what we know about Newton, but the problem is actually more complicated and there was another very good scientist at that time. This is in Britain at the royal society named Robert Hooke. However, he ran into Newton. He claimed at one point, this is before the principia was published that he invented the inverse square law and that he had written a letter to Newton which nobody has ever seen and it became dispute between them. Newton when he wrote the Principia then he said he wouldn’t publish the Principia because of this dispute when he wrote it and finally published it, there is no mention of Hook anywhere in the Principia which is kind of ashamed, but that’s the fact.
