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!
The most direct test of String Theory certainly would be to build a powerful microscope, look deeply inside a particle and see the string. That would settle the issue pretty definitively. The problem with that is that this is the conventional formulation of string theory. The string is so tiny, that’s a very unlikely thing that will ever be able to do, just give it a sense, strings in a conventional approach are about 10 to the minus 35 meters across. That’s such a fantasticly small number that hard to wrap your mind around, but just by analogy. If you were to take a single atom, and magnify to be as large as the known universe, the observable universe, that’s the huge scale of magnification. A string under the same magnification will grow to be roughly the size with a tree. So a tree it’s in an entire observable universe as a string is to an atom. That shows how challenging it would be to actually see one of these strings directly.
