PTE Re-tell Lecture 真实讲座练习题:气态巨行星

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!

So there are two theories for how the gas giants formed. One is the same theory I showed you just now- core creation, right. And the other is called incontestability and one of our colleagues at DTM has done a lot of work on that and so it’s unclear exactly how they formed but you’re right what we’re trying to do the reason we’re trying to get the higher and higher pressure in the lab is because we are trying to understand more about the pressure inside the gas giants. It’s not that the gas giants also have a metallic core, but maybe the metallic core not made of iron. Hydrogen, for example becomes metallic at a certain pressure. So it’s very possible that the insides of these planets could have metallic cores, could have hydrogen cores, could have rocky portions we’re not sure. But the higher pressure we can get in the lab the higher the pressure we can get in the lab, the closer we can get understanding the interiors of the gas giants and the exoplanet that are so big.


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