标签：predators 相关文章
2006年6月大学英语六级考试试题 Part Ⅰ Listening Comprehension ( 20 minutes ) Section A 1. A) She met with Thomas just a few days ago. B) She can help with orientation program. C) She is not sure she can pass on the message. D) She will certainly try
大学六级英语考试听力真题
At Jasper National Park, high in the Canadian Rockies, spring is a full, fragrant bloom: food is plentiful and new life emerges. But spring does not come easily, and for newborn youngsters dangers abound. Many must learn to run first and ask questio
国家地理2008年
Scientists Work to Save Puerto Rican Parrots Scientists are trying to save Puerto Rico's endangered Amazon parrots after Hurricane Maria destroyed the birds' habitats and food sources. El Yunque is a large national forest on the eastern part of Puert
2018年VOA慢速英语(十一)月
In the oysters were raised in much the same way as dirt farmers raised tomatoes- by transplanting them. First, farmers selected the oyster bed, cleared the bottom of old shells and other debris, then
新东方背诵文选
Clearly, we have never understood what is causing desertification, which has destroyed many civilizations and now threatens us globally. 显然，我们从未明白什么导致了荒漠化，这种荒漠化已经毁掉了很多的文明社会，而现在
TED演讲教育篇
科学家解开鸟群秘密 How can flocks of birds, schools of fish or herds of antelope suddenly change direction -- all the individuals adjusting their movement in concert, at seemingly the same time? British researchers now have some insights int
VOA双语新闻 2014年8月
夏威夷濒危鸟类获得二次机会 Of the world's nearly 9,900 bird species, 13 percent - one in eight - are threatened with extinction, according to BirdLife International. Among them are two Hawaiian honeycreepers - tiny birds that live in the
VOA双语新闻 2015年4月
When the Pachyrhinosaurus bodies came to the bend in the river the momentum of the water push their carcasses to the outer edge of the bend. 当肿鼻角龙的尸体来到河流的转弯处，水流的动力将它们的尸体冲向河流转弯处外缘
侏罗纪搏击俱乐部
The thing about extinction events is that, of course they're very bad for the animals that go extinct, but they open up a door of opportunity for a lot of other animals and plants. 其实就灭绝事件来说，当然对走向灭绝的动物来说很糟
侏罗纪搏击俱乐部
Albertosaurus hunted in small groups of up to five. 阿尔伯特龙小群狩猎，每群多可达五头。 A herd of Pachyrhinosaurus would have been more than capable of standing their ground against a single Albertosaurus. 一群肿鼻角龙面对一
侏罗纪搏击俱乐部
70 million years ago,Albertosaurus was the most fearsome hunter in North America. 七千万年前，阿尔伯特龙是北美洲最可怕的猎手。 It was one of the few dinosaurs that would take on the horned Arctic dinosaur. 它是少数敢于攻击
侏罗纪搏击俱乐部
In order to understand the hunting methods of Albertosaurus, paleontologists compared its brain design to that of modern animals. 为了了解阿尔伯特龙的狩猎方式，古生物学家将其脑部构造与现代动物进行比较。 The brain s
侏罗纪搏击俱乐部
Camarasaurus also owed its success to a set of long, spoon-shaped teeth that, paleontologists came to realize, could defoliate entire trees. 圆顶龙成功的另一个原因是（牙齿露出5厘米，含牙根8厘米）它们长长的匙状牙齿古生
侏罗纪搏击俱乐部
What makes a Raptor so incredibly dangerous is that they're built like ninjas. 迅猛龙之所以如此危险，是因为其身体构造像忍者一样。 They're fast, they're strong, they're agile, they've got razor sharp teeth and these teeth curv
侏罗纪搏击俱乐部
They may be the victims of unwanted sexual advances. And unfortunately, very, very often it might come even from their teachers. When boys and girls reach puberty, their bodies go through many physical changes. But for girls in Africa, the onset of m
VOA标准英语2010年(二月)
Ravens Crow with Individual Flair There's a well-known conspiracy of ravensthat's what you call a group of ravensthat likes to hang out near a zoo in the Austrian Alps. Every day these ravens conspire to steal the food that's set out for the wild boa
2018年科学美国人3月
Chimps do it. Dolphins do it. Even crows that want to catch fish do it. But an octopus? Yes, it seems the smartest member of the invertebrate world has learned how to use a tool. Octopuses have a reputation for being clever. They can figure out how t
英语时差8，16
Pythons, bats and giant armadillos are among the longest sleepers at over 18 hours a day. Human babies need 16 hours, and most of us probably feel we need around eight hours sleep to function well. Professor Jerry Seigel, from the University of Calif
英语时差8，16
Science and technology 科学技术 Marine biology 海洋生物学 Finding Nemo's role 尼莫的新角色 Clownfish help their anemones breathe 小丑鱼助力海葵呼吸 IT IS one of the best-known relationships in nature: the anemone provides a te
经济学人科技系列
Now, even small dogs are genetically programmed to function like predators, which makes sense considering they are close relatives of wolves. And birdsyou can probably figure out why the only way youd find out your bird is sick is when it dies. The s
英语时差8，16