标签：predators 相关文章
16 At Home in the Savanna My name is Dopal. Im eleven years old and I live in 1)Tanzania, in the heart of the African 2)savanna. Im a Masai. Masais are 3)nomads who travel all over with their animals, looking for 4)pasture. Our most wonderful and va
美文欣赏
By using cutting edge technology and every available piece of fossil evidence, 60-million-year-old mysteries have forensically decoded. 通过最新的科技和每一块相关的化石证据，六千万年的谜团水落石出。 From their ability t
英语第1级听力-English Level 1
Paleontologists believe that this actually help her hone her fighting skills. 古生物学家们相信这能帮助雌性磨练搏斗技能。 A full grown Majungasaurus is pretty much able to take care of itself,完全成年的玛君龙基本能保护自
侏罗纪搏击俱乐部
This is Scientific American's 60-Second Science. Im Karen Hopkin. Itll just take a minute. When you think about an ecosystem, you usually think of the big animals that live there. The Serengetis ruled by lions. And estuaries are populated by fishes,
Scientific American(七)月
More than 16 mammals species like the famous fly squirrel have adapted the ability to sail from tree to tree, thrilling Yes, but what is the evolutionary advantages. One theory suggests gliding saves energy, so researchers test that idea using colugo
Scientific American(七)月
18. THE HUNT 第十八章 猎杀 They emerged one by one from the forest edge, ranging a dozen meters apart. 他们一个接一个地出现在密林边缘，分散着走在十几米的范围之内。 The first male into the clearing fell back immedia
暮光之城•暮色
UK's Biggest Scaredy Cat As one of natures top predators, the tiger is not an animal that we would ordinarily think of as being chicken. However, one tiger, which lives in an English zoo, turned out to be more cowardly than his keepers could ever hav
英语时差8，16
The teeth that were found near the T-Rex had been shed. 这些牙齿在霸王龙化石附近被发现。 But were the teeth broken during a battle, or could the Nanotyrannus have simply found the dead T-Rex and lost them scavenging on his remains? 但是
侏罗纪搏击俱乐部
In a cave in rural Wyoming, lies a time capsule from the ice age. 在怀俄明郊区的一个山洞里，有个从冰期留下的时间胶囊。 It contains the remains of not one, but two huge mammals. 里面有两具巨型哺乳动物留下的遗骸。
侏罗纪搏击俱乐部
This is Shaun Ellis. He's done something few would dare and even fewer understand. His passion for these animals has led him to live life as a wolf. For me personally, it's cost family, home, security, financial commitment. Everything is gone. But yo
国家地理2007年
Why Can't You Tickle Yourself Have you ever thought about why people are ticklish? According to scientists, ticklishness is a defense mechanism humans developed against bugs, spiders, and other critte
有声英文阅读
At Home in the Savanna My name is Dopal. Im eleven years old and I live in 1)Tanzania, in the heart of the African 2)savanna. Im a Masai. Masais are 3)nomads who travel all over with their animals, looking for 4)pasture. Our most wonderful and valuab
精美英文欣赏
[00:00.00]Seahorse Fathers Take Reins in Childbirth [00:04.96]Its true that male seahorses never play catch with their children [00:11.31]or help them with their homework. [00:13.28]But they do outdo human dads on one count. [00:16.89]Male seahorses
晨读英语美文60篇
This is Scientific Americans 60-Second Science, I am Cynthia Graber .This will just take a minute. How can we improve engines, inhalers and fire extinguishers? Maybe by copying a beetle. The bombardier beetle's name might scare off predators if they
Scientific American(四)月
Many of our medicines originate in plants. But were not the only ones who tap into nature.Theres increasing evidence that some animals seek out specific plants for their medicinal qualities. A new study shows that monarch butterflies may be among the
Scientific American(十)月
This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? A hungry fish can kill prey with a quick bite. That is, of course, if its prey hasn't already died of fright. Take tasty dragonflies. The mere presence of pred
Scientific American(十一)月
It's hard to mistake that sound. Now imagine hearing it during a night that can last for months and where temperatures drop as low as 37 degrees Celsius. Enough to give nightmares to musk ox and Arctic hares, the favorite prey of the long-legged whit
Scientific American(一)月
In the day of the dinosaur, insects had wingspans of nearly 2.5 feet. So why are today's bugs so puny? According to researchers at U.C. Santa Cruz, we may have birds and bats to thank. Their concludes appear in the Proceedings of the National Academy
Scientific American(六)月
This is the VOA Special English Agriculture Report. Red imported fire ants cause billions of dollars a year in US farm damage Farmers in parts of the United States have struggled for years with an invasion of red imported fire ants from Brazil. Thes
VOA慢速英语2007年（五）月
This is the VOA Special English Agriculture Report. A study from Canada says fish farms are a threat to some populations of wild salmon. It says the danger is from sea lice, which are small organisms that feed on fish. The researchers say these para
VOA慢速英语2008年（一）月