【万物简史】PART I CH 3_17_英语听力练习mp3下载-科学-沪江听力酷

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【万物简史】PART I CH 3_17

听力简介：

这是一部有关现代科学发展史的既通俗易懂又引人入胜的书，作者用清晰明了、幽默风趣的笔法，将宇宙大爆炸到人类文明发展进程中所发生的繁多妙趣横生的故事一一收入笔下。惊奇和感叹组成了本书，历历在目的天下万物组成了本书，益于人们了解大千世界的无穷奥妙，掌握万事万物的发展脉络。
收获英语收获一本好书~！

书本的朗读语音很charming的磁性英音~~~大家可以好好学着模仿哦~~~！！
因为原著为美国人所写,单词采用美式拼法,不抄全文,然后听写单词或词组(用[-No-]表示)以及句子(用[---No---]表示)。请边听写边理解文意，根据上下文注意各句标号，这样有助于提高正确率。

今天是本章的最后部分，内容有点多，但是同样有趣，喜欢科学探索的你也一定会着迷，让我们开始吧~~
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At this point, about 4.5 billion years ago, an object the size of Mars crashed into Earth, blowing out enough material to form a companion sphere, the Moon. Within weeks, it is thought, the flung material had [-1-]itself into a single clump, and within a year it had formed into the spherical rock that companions us yet. Most of the [-2-]material, it is thought, came from the Earth's crust, not its core, which is why the Moon has so little iron while we have a lot. The theory, [-3-], is almost always presented as a recent one, but in fact it was first proposed in the 1940s by Reginald Daly of Harvard. [---4---]

When Earth was only about a third of its eventual size, it was probably already beginning to form an atmosphere, mostly of carbon dioxide, nitrogen, methane, and sulfur. [---5---] Carbon dioxide is a powerful greenhouse gas. This was a good thing because the Sun was significantly [-6-]back then. Had we not had the benefit of a greenhouse effect, the Earth might well have frozen over [-7-], and life might never have gotten a toehold. But somehow life did.

For the next 500 million years the young Earth continued to be pelted relentlessly by comets, meteorites, and other galactic debris, which brought water to fill the oceans and the components necessary for the successful formation of life. [---8---] Some tiny bag of chemicals twitched and became [-9-]. We were on our way.

Four billion years later people began to wonder how it had all happened. And it is there that our story next takes us.