单词：Isaack
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有声畅销书-秘密
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有声畅销书-秘密
Meanwhile, the ground sloth, like the mastodons, must eat most of the day to fuel its huge bulk. This may be the ice age, but by midday, temperatures soar, drawing another predator to the spring to drinkthe notorious saber-toothed cat. Most creatures
探索与发现2013年
This triggered other dramatic changes. As sea levels dropped, so did the inland water tables. Florida's fresh water drained away through the porous limestone rock. Pools dried up and springs diminished. Florida was on the brink of drought. And animal
探索与发现2013年
Could it be that drastic water shortage was the reason for the mastodons' epic migrations? Another big piece of this puzzle lies far out to sea. This is the ocean floor. But this isn't rock sprouting out at the bottom. It's wood. It's the remains of
探索与发现2013年
But despite their name, the mighty Everglades did not exist during the ice age. So what did pre-historic Florida look like? There is one place in northern Florida that has revealed more ice age secrets than almost anywhere else, the dark slow-moving
探索与发现2013年
They can grow more than two metres long and weigh as much as three men. But the giant tortoises of ice age North America were even larger. Florida does have tortoises today, but on a much smaller scale. This is the gopher tortoise. Tortoises are cold
探索与发现2013年
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有声畅销书-秘密
Peace Prize winner and former Finnish President. He also won the 2008 UNESCO Peace Prize. Ahtisaari has spent much of his career in the worlds danger zones trying to bring peace to people at war. Ahtisaari started his career as a school teacher, whic
各国名人英文介绍
Visa Inc. is one of the worlds largest global payments technology companies. Contrary to popular belief, it does not issue credit cards but allows financial institutions to issue cards that Visa then processes transactions on. Visa started in 1970, d
各大品牌英文介绍
资本主义、民主制度与全民享有的政治权利，在已开发国家是受到支持的；但对新兴市场区域的人来说，多半是奢求。在这场铿锵有力的演说中，经济学家丹比萨 莫约(Dambisa Moyo)提出理由说明
TED公开课:世界权势大转移
Technology Report - A Better Computer Mouse Cursor for the Disabled This is the VOA Special English Technology Report. 这里是美国之音慢速英语科技报道。 Using a computer mouse or trackball can be a little tricky. You choose the object
2011年VOA慢速英语(四)月
South Africa will soon waive visa requirements for Zimbabweans and grant them special permits to remain in the country for six months. South African deputy Home Affairs Minister Mulusi Gigaba says his government has accepted the need for a new polic
VOA标准英语2009年(四月)
Todd: So, Lucinda you were saying that your boyfriend Kwame really likes New Zealand, so are you guys going to move back to New Zealand. Lucinda: Yes, we're actually leaving at the end of this month on the 30th of November. Todd: Oh, really, you're m
原版英语对话1000个
In the heat of the day, hunters can afford to slow down and rest in the shade. Its one of the advantages of a high-protein diet. Llamas originated here in North America are the regular visitors to the spring. The strange-looking tapir is common too.
探索与发现2013年
Though very powerful, shes not a sprinter and she needs to get close to her prey before she strikes. This time shes run too soon and its a fruitless chase. Then her attention is diverted to a slower-moving target, slow but not defenseless. She backs
探索与发现2013年
(straight through my heart) If you have an album coming out the next day, the last thing you wanna hear is one of your members has swine flu. But thats exactly what happen to the Backstreet Boys. Unfortunately, I was diagnosed with the swine flu. A d
英语杂谈
The remains of the Italian woman who was the model for Leonardo da Vinci's Mona Lisa（蒙娜丽莎） were dug up 30 years ago and now lie in a municipal rubbish tip, an Italian expert has claimed. Lisa Gherardini died in Florence in 1542 and was bu
英语新闻
Feel the wind As it brushes right over my cheek See the haze As it covers my eyes Feel my body's intention No mind can destroy As it rises and leaves me numb Feel it all coming down Feel it all coming down As I stand in the way And I'm lost on the gr
美国乡村音乐
Through this world will you guide me Through this pain Will you always hold my hand when I need you When I don't know what I'm doing with myself I'm a lost soul Walking through this world Like I have some idea When I don't, I don't And I take on the
美国乡村音乐