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!
Einstein was the master of what we usually called the thought experiment. He didn’t go out into the world and actually do experiments where who would measure things, and try to determine how a given experiment would turn out. Instead, he would sit, more or less at a desk and work at the blackboard and through the power of though, recognize that there are certain puzzles that need to be resolved. And the one that really was vital to his understanding of special relativities is this. He recognized that the previous work that came to him from the late 1800s, works of someone’s name James Clark Maxwell. That work showed that the speed of the light seemed to be constant, that it seemed to be unalterable. Then many people struggle with that how could the speed of something be unalterable, I mean take a baseball, you can change its speed, you throw it fast, you throw it slow, it can go at different rates. Why would light have a fixed speed? Einstein took that little puzzle very seriously and realized well, if speed is a measured of how far something goes in space it covers divided by how long it takes to get there, the duration of the time. He realized that if speed was constant for light, then space and time had to adjust themselves in order that speed stays fixed. Space and time had to behave in a way that was unfamiliar and if you thought that through in detail, he realized that space can shrink and time can dilate depending upon how you’re moving. That’s how we came to this rather shocking realizations about space and time.
