新东方背诵文选 L36.Plate Tectonics and Sea-floor Spreading

The theory of plate tectonics describes the motions of the lithosphere, the comparatively rigid outer layer of the Earth that includes all the crust and part of the underlying mantle. The lithosphere(

新编大学英语教程第四册Unit 08

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国家地理-2008-03-31 Equinoxes 春秋分

Twice a year, day and night, fall into balance, lasting for nearly equal length. Known as equinoxes, Latin for equal night, they occur in March and September and along with solstices mark the changing of seasons as Earth travels around the sun. Astr

新的NASA火星任务将深入研究行星表面

New NASA Mars Mission Will Study Deep Under Planets Surface NASA, the American space agency, is sending a robotic scientist to Mars. It will dig deeper than ever before to study the planets geological activity. The Mars InSight spacecraft launches Ma

CNN 2012-02-07

Yes I am.You guys are awesome just like Fridays.Thank you for the introduction.I am CA,the real one.Here with your commercial-free headline. First up.A military mission started more than a decade ago could be ended earlier than expected.Yesterday,the

SSS 2011-06-28

This is Scientific American's 60-Second Science. I'm Steve Mirsky at the Lindau Nobel Laureate Meeting in Lindau Germany.This will just take a little more time than our usual minute. Harold Kroto won the Nobel Prize in Chemistry in 1996 for the disco

SSS 2012-01-02

Happy new year and dont feel bad about taking today off, after all, youve travelled far. And Im not talking about the trip home from the party. According to NASA, just by being on the planet earth last year, youve zipped about 584 million miles aroun

SSS 2009-01-01

This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute Happy New Year! And dont feel bad about taking today off. After all, youve traveled far. And Im not talking about the trip home from the party last night. According to N

英文书摘精选 多年前,一年长达400天

Years Ago, The Year Was 400 Days Long 多年前，一年长达400天 Don: Yaeuml;l, do you notice the days changing length over the course of the year? 东：雅瑶，你有注意到一年中每一天的长度在改变么？ Yaeuml;l: Sure, Don, it s

英文书摘精选 智利地震如何使地球一天时间缩短

The massive earthquake that struck Chile in February 2010 might have shortened Earth's day by 1.26 microseconds, according to calculations by a NASA scientist. An EarthSky Facebook friend asked us how. And the answer is for the day to get shorter, Ea

万花筒 2011-03-14&03-16 日本地震有多严重？

We are talking now to Dr. Michio Kaku, our friend from City University of New York, Physicist. Just as important, you have friends and family in Japan, you've been in contact with them? That's right. We tried to call them on the telephone. And they t

VOA标准英语2012--Global Warming Could Delay Next Ice Age

Global Warming Could Delay Next Ice Age The next ice age could be delayed by tens of thousands of years due to excessive amounts of heat-trapping carbon dioxide in the atmosphere, which disrupts Earths natural cycle of warming and cooling, according

历史上的今天-Today in History 2013-12-11

December 11, 1936Britains King Edward the VIII becomes the first and only monarch to voluntarily give up his countrys throne . Edward abdicates in order to marry an American divorcee Wallis Warfield Simpson and he takes the title of the Duke of Winds

历史上的今天-Today in History 2014-01-29

Our war against terror is only beginning. January 29th 2002. Just months after the September 11th attacks. President Geroge W. H. Bush warns terroists still threaten the United States. Bush also singles out three nations during his first State of the

英语听力：自然百科 神奇水世界 Water-13

But as it grew, the Khmer Kingdom faced the stumbling block. When the monsoon finished each year, the fish and water would vanish. So each year, the inhabitants were plunged into drought and hunger. The Khmer rules off the challenge magnificently. Th

NASA Messenger Probe Set for Historic Orbit Around Mercury

The U.S. space agency NASAs Messenger probe（正直的，廉洁的 ） is scheduled to reach Mercury later this week, and become the first spacecraft to orbit the planet closest to the sun. During Messengers year-long orbital mission, scientists exp

历史上的今天-Today in History 2010-12-11

December 11th, 1936Britains King Edward the VIII becomes the first and only monarch to voluntarily give up his countrys throne . Edward abdicates in order to marry an American divorcee Wallis Warfield Simpson and he takes the title of the Duke of Win

历史上的今天-Today in History 2014-12-11

December 11, 1936Britains King Edward the VIII becomes the first and only monarch to voluntarily give up his countrys throne . Edward abdicates in order to marry an American divorcee Wallis Warfield Simpson and he takes the title of the Duke of Winds

【英语时差8,16】智利地震如何使白天变短-上

Powerful earthquakes-like the ones in Haiti and Chile in 2010-leave destruction in their wake. Buildings collapse, many people are injured and killed. But the chaos created by massive quakes isnt limited to the regions where they happen. The Chilean

双语有声阅读：板块结构与海床扩展

Plate Tectonics and Sea-floor Spreading The theory of plate tectonics describes the motions of the lithosphere, the comparatively rigid outer layer of the Earth that includes all the crust and part of the underlying mantle.The lithosphere is divided