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地板
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发表于 2021-1-23 15:34:01
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Day 6 第一篇
What really killed the dinosaurs?Lingering doubts about the cause of a mass extinction are put to rest
文章的中心大意:现象解释型,探究恐龙灭绝的真正原因
总结框架:
首先阐明恐龙灭觉的一个解释
其次提出了另一个解释:Toxic and climate-changing gases from these eruptions, they suggest, were the underlying cause of the mass extinction that did for the dinosaurs
Pincelli Hull of Yale University继续探究背后的原因:The team conclude, the impact that caused the extinction, not the volcanoes.
通过解释教授是收集数据的过程,最后得出结论:It therefore seems unlikely that the Deccan Traps were responsible for the extinction. Rather, it was the asteroid wot done it.
优美句子摘抄:
Toxic and climate-changing gases from these eruptions, they suggest, were the underlying cause of the mass extinction that did for the dinosaurs—a point of view backed up by the fact that two earlier mass extinctions, those at the ends of the Permian and Triassic periods, coincided with similar eruptions while showing no sign of an asteroid strike.
阅读时间:2.5 分钟;总结时间:10分钟
生词摘录
prehistoric 史前
swept 扫
asteroid 小行星
第二篇
The search for dark matter in the recent majestic universe
文章的中心大意:问题解决型,探究暗物质是由什么种类的粒子构成的
总结框架:
首先由“暗物质是由什么种类的粒子构成”这个问题引入,排除了一些答案:It cannot be protons, neutrons, or anything that was once made of protons or neutrons, such as massive stars that became black holes.
其次提出:Nor can more than a small fraction of the dark matter be neutrinos, a lightweight breed of particle that zips through space and is unattached to any atom.
然后出现了一个新的概念:“cold” dark matter,并且说明:extensions of the Standard Model—developed for reasons quite separate from the needs of astronomy—offer many plausible candidates.
紧接着又是supersymmetry theory。。。最后提出了!The hypothesized mass, stability and neutrality of the neutralino satisfy all the requirements of cold dark matter.
优美句子摘抄:
Supersymmetry is an attractive explanation for dark matter because it postulates a whole new family of particles—one “superpartner” for every known elementary particle.
阅读时间:5分钟;总结时间:15分钟
生词摘录:
protons 质子
neutrons 中子
supersymmetry 超对称性 |
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