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Airplane Engines In 1945, a new type of airplane engine was invented. It was much lighter and more powerful than earlier engines, and enabled warplanes to fly faster and higher than ever. This type of engine was called the jet engine because it below

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OliverJeffers生在澳大利亚西部，但成长于北爱尔兰的贝尔法斯特，现在纽约。是个插画师，也是个作家。从 2004 年至今，他在动画界获奖无数。他的画充满童真，有点淡淡的忧伤，但又有浓烈的

SSS 2009-02-06

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Its good to be the Queen. You get fed and cared for and generally treated like royalty. But if youre a blue butterfly caterpillar, you can get the same b

SSS 2010-01-05

Sometimes it pays to look like a pile of poop. At least if youre a tasty caterpillar trying to avoid getting eaten by hungry birds. Because a study in the journal Science shows that even young chicks tend to overlook caterpillars disguised as dung. A

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NASA Successfully Tests New Rocket Engine NASA最强火箭测试成功 火星之旅指日可待 The American space agency successfully tested a powerful new rocket engine this week in the desert of northern Utah. The rocket booster is meant to take a

VOA标准英语2008年-North Korea Missile Site Said to Be Capable of

One of the world's foremost analysts of North Korea's ballistic missile programs says reports of missile engine testing at a newly revealed facility appear credible. As VOA Seoul Correspondent Kurt Achin reports, North Korea is apparently able to te

VOA标准英语2010年-Caterpillar Crawl Could Inspire New Ro

The gut of the tobacco hawk moth caterpillar used in the study moves forward independently of, and ahead of, the surrounding body and wall and legs. By turning a powerful x-ray machine on a caterpillar, scientistists have discovered a novel way of mo

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eBay acquires recommendation engine Hunch

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VOA标准英语2009年-Liberia Caterpillar Threat Not as Bad as Origin

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The Caterpillar

The Caterpillar The Caterpillar looked at Alice and said nothing. Perhaps it doesn't speak', Alice thought. But at last it did speak. Who are you? it asked. It was a hard question. Alice answered, but not very quickly: I--I don't know. I knew who I w

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One of the world's foremost analysts of North Korea's ballistic missile programs says reports of missile engine testing at a newly revealed facility appear credible. North Korea is apparently able to test its missiles under more realistic conditions

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NEW YORK, Oct. 24 (Xinhua) -- Wall Street held its strong gain to the last minute of trading on Monday, buoyed by strong earnings from Caterpillar and hopes on a concrete resolution to the European debt woes. The Dow Jones industrial average gained 1

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North Korea today hailed its test of a new intermediate-range missile and claimed that it can now hit U.S. bases in the Pacific with a nuclear warhead. State TV broadcast footage of Sunday's launch. The missile traveled nearly 500 miles, but analysts

英语听力：爱丽丝漫游奇境记 03. Conversation with a caterpillar

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