文章列表

• 1.英语听力：自然百科 Cheetah vs. Gemsbok 猎豹与大羚羊的角力
• It's morning in the Kalahari, and this female cheetah has discovered that her cubs are growing ever more independent. She calls for them, but theyve a...
• 2.英语听力：自然百科 Spacewalks 太空行走，看上去很美
• It's morning in the Kalahari, and this female cheetah has discovered that her cubs are growing ever more independent. She calls for them, but theyve a...
• 3.英语听力：自然百科 New Search For ET 寻找外星人（下）
• And clearly, we are trying to find evidence of ET, and we are trying to do that by looking for a signal, in whats called the electromagnetic spectrum,...
• 4.英语听力：自然百科 New Search For ET 寻找外星人 上
• Ok, imagine you are at the beach, in order to figure out if there are fish in the ocean, you dip an empty glass into the water and look inside. No fis...
• 5.英语听力：自然百科 A Cat Has Nine Lives 猫有九条命
• The cat's earliest ancestors probably hunted both on the ground and in the trees. To survive, they needed not only claws, but remarkable balance, an a...
• 6.英语听力：自然百科 Alternative Energy 可替代能源
• When the wind picks up at the foot of the Rockies, there are those who believe they can hear the future. At the National Renewable Energy Laboratory, ...
• 7.英语听力：自然百科 Women in Space 太空女性
• Since the US space program began in 1958, NASA has achieved much in the realm of space exploration. From lunar landings to voyages into the depth of o...
• 8.英语听力：自然百科 Coastal Cleanup 净滩大行动
• So, every year at this time, nearly half a million people step forward to help, to volunteer in an international coastal cleanup and the results can b...
• 9.英语听力：自然百科 Mission to Mars 火星任务：巨大的心理考验
• This is Mars on Earth, a station that was built to help us learn how to live on the red planet. A group of explorers and NASA scientists are spending ...
• 10.英语听力：自然百科 Hippo Spa 河马也水疗
• How do you like a behind-the-scenes look at one of the nature's most luxurious full service, hippos' spas. Our dominant male hippo customer has alread...