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,墨尔本悉尼文波雅思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!
In some sense, everything that we’re doing in the string theory is an attempt to understand singularities. The reason why there is a singularity inside a black hole that the conventional framework of physics can’t address is because we don’t have to put gravity into quantum mechanics together. I mean when a star collapses, you certainly need a theory of gravity, star were so massive. So when a black hole forms, you certainly need a theory of gravity, but when that star collapses to an infinitesimal speck, the singularity, the centre of a black hole, you certainly need a quantum mechanics to come to bear too. If you can’t put gravity and quantum mechanics together, you have no tools to address the singularity, so our hope is that string theory by putting gravity and quantum mechanics together will allow us to address singularities and that notion has been realised that there are certain kinds of singularities, not the black hole singularity or big bang singularity, but others more mild singularities that string theory has addressed, so we are heading in a positive direction in terms of realising the dream of curing singularities through our understanding of string theory.
