萬(wàn)物簡(jiǎn)史:PART I CH 3_17
這是一部有關(guān)現(xiàn)代科學(xué)發(fā)展史的既通俗易懂又引人入勝的書,作者用清晰明了、幽默風(fēng)趣的筆法,將宇宙大爆炸到人類文明發(fā)展進(jìn)程中所發(fā)生的繁多妙趣橫生的故事一一收入筆下。驚奇和感嘆組成了本書,歷歷在目的天下萬(wàn)物組成了本書,益于人們了解大千世界的無(wú)窮奧妙,掌握萬(wàn)事萬(wàn)物的發(fā)展脈絡(luò)。
收獲英語(yǔ) 收獲一本好書~!
書本的朗讀語(yǔ)音很charming的磁性英音~~~大家可以好好學(xué)著模仿哦~~~?。?
因?yàn)樵鵀槊绹?guó)人所寫,單詞采用美式拼法,不抄全文,然后聽(tīng)寫單詞或詞組(用[-No-]表示)以及句子(用[---No---]表示)。請(qǐng)邊聽(tīng)寫邊理解文意,根據(jù)上下文注意各句標(biāo)號(hào),這樣有助于提高正確率。
今天是本章的最后部分,內(nèi)容有點(diǎn)多,但是同樣有趣,喜歡科學(xué)探索的你也一定會(huì)著迷,讓我們開(kāi)始吧~~
Hints
noxious
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.
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