It means the living can slip away for now, she'll not go far, she'll be back again up to 8 times during a single breeding season, to deposit up to 100 eggs on each visit, only then can she head back to her feeding grounds where who knows what will ha

发表于:2018-12-26 / 阅读(126) / 评论(0)

自然百科2014年

英语听力：自然百科海洋天堂大堡礁:堡礁内外—19

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到听力原文收集区，您将会获得10到30积分的奖励! Thank you！

发表于:2018-12-26 / 阅读(143) / 评论(0)

自然百科2014年

英语听力：自然百科海洋天堂大堡礁:堡礁内外—18

This is a known mindless killer. The shark is smart. It pitches up at the peak of the turtle nesting season, and simply waits for the tide to deliver its food.-Ah, look at that so distinctive...have the boat. Tigers are a big fan with all manner inte

发表于:2018-12-26 / 阅读(125) / 评论(0)

自然百科2014年

英语听力：自然百科大堡礁：自然奇迹—1

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自然百科2014年

英语听力：自然百科大堡礁：自然奇迹—2

Many of the creatures are exquisitely beautiful, but some seem straight out of science fiction, while others can kill **. And just when you think you know the reef, it changes every second, every hour, every day, and every year. It's a world of conti

发表于:2018-12-26 / 阅读(186) / 评论(0)

自然百科2014年

英语听力：自然百科大堡礁：自然奇迹—3

They respond to touch, temperature, currents, and the cycles of the sun and the moon. And their tiny movements combined to give each colony a rhythm of its own.The polyps can't build the reef alone. For this, they need parterners that are even smalle

发表于:2018-12-26 / 阅读(188) / 评论(0)

自然百科2014年

英语听力：自然百科大堡礁：自然奇迹—4

Even though, coral reefs cover less than 1% of world's oceans. They contain a quarter of all known marine life. And the Great Barrier Reef is the biggest of them all. I still vividly remember my first dive on a coral reef over 20 years ago. And the m

发表于:2018-12-26 / 阅读(186) / 评论(0)

自然百科2014年

英语听力：自然百科大堡礁：自然奇迹—5

Imagine all this activity, this constant even flow of life continuing for over 2,000 kilometers. It's hard to believe that such a hugh solid structure hasn't always been here. But compared with the rest of Australia, this reef is very young. -20,000

发表于:2018-12-26 / 阅读(248) / 评论(0)

自然百科2014年

英语听力：自然百科大堡礁：自然奇迹—6

Aboriginal people would have lived here too. Hunting the wildlife in areas that are now deep underwater. Then the end of last ice age, ice of the poles melted and sea levels rose all around the round flooding this lowline coast. This happened nearly

发表于:2018-12-26 / 阅读(191) / 评论(0)

自然百科2014年

英语听力：自然百科大堡礁：自然奇迹—7

Some are little more than rocks, others substantial mountains, covered in woodland. The first British person to see that was captain Cook, who stood here in 1770, and for the first time, realized the scale of the Great Barrier Reef. He also realized

发表于:2018-12-26 / 阅读(155) / 评论(0)

自然百科2014年

英语听力：自然百科大堡礁：自然奇迹—8

发表于:2018-12-26 / 阅读(185) / 评论(0)

自然百科2014年

英语听力：自然百科大堡礁：自然奇迹—9

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自然百科2014年

英语听力：自然百科大堡礁：自然奇迹—10

But even he has his limits. On the reef, there seem to be an almost infinitely variety of ways of feeding, some fish even cultivate their own food. So they're very protective of it. There's one fish species that is so good at defending its particular

发表于:2018-12-26 / 阅读(138) / 评论(0)

自然百科2014年

英语听力：自然百科海洋天堂大堡礁:堡礁内外—24

发表于:2018-12-26 / 阅读(132) / 评论(0)

自然百科2014年

英语听力：自然百科希律王陵墓现世

Israeli archeologists excavating what they believe is the tomb of biblical King Herod, Said on Wednesday theyve unearthed lavish Roman-style wall paintings of a kind previously unseen in the Middle East. They also say they have found signs of a regal

发表于:2018-12-26 / 阅读(141) / 评论(0)

自然百科2008年

英语听力：自然百科天竺鼠圣诞餐

Officials in the coastal Peruvian province of Callao on Monday hailed the guinea pig as a low-cost, low-fat alternative to a traditional turkey or roast pork Christmas dinner. Guinea pigs can feed seven or eight for just over 3 US dollars, according

发表于:2018-12-26 / 阅读(208) / 评论(0)

自然百科2008年

英语听力：自然百科重现人间的斑驴

The plains zebra is a close relative of the quagga, extinct since 1883. But according to members of the Quagga Project in Cape Town, South Africa. The foal seen running with its herd of plains zebras is a quagga. His name's Harley and he was born in

发表于:2018-12-26 / 阅读(119) / 评论(0)

自然百科2008年

英语听力：自然百科老乌龟传宗接代不容易

Hopes are fading that lonesome George, a unique giant Galpagos tortoise, will become a father. George lives in the Galpagos National Park in Ecuador and is believed to be the last living member of its species. Conservationists are anxious to ensure h

发表于:2018-12-26 / 阅读(167) / 评论(0)

自然百科2008年

英语听力：自然百科人类与牛（下）

A barbecue taps into our hunter-gatherer of past. But eating beef no longer requires a life-and-death battle for the formidable adversary. 8000 years ago, something extraordinary happened to change all that. hunter-gatherer:采猎者，靠打猎和采集

发表于:2018-12-26 / 阅读(148) / 评论(0)

自然百科2009年

英语听力：自然百科人类与牛（上）

This is the animal we see grazing in a field as we drive along the highway. They have a timeless quality as if they have always been with us and we have always known them. In short, we take the cow for granted. John Webster, Professor of Animal Husba

发表于:2018-12-26 / 阅读(168) / 评论(0)

自然百科2009年

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biofilm fluidized bed reactor

blackfriar