标签：extinction 相关文章
What is a creepy crawly? Well, it isnt easy to give a straight definition so Ill tell you a couple of stories to try to explain. A few years ago I was on holiday in Holland. I was on a bicycle trip and at the very first sign of a hill, I got off my b
英语科技新闻
Unit 15 Part B Good News about the Environment Scientists and environmentalists have constantly warned us of the worsening state of our environment. Their view can be summarized in the list below: ● Our resources are running out. ● The population
全新版大学英语听说教程第四册
Today, we face an unprecedented surge in the brutal slaughter of iconic animals by poachers. 今天，我们面临着偷猎者对标志性物种前所未有的疯狂杀戮。 In South Africa, for example, one rhino was killed every month until 2005. 比
欧美名人演讲
A desert in the American Southwest provides evidence of a hunt from long ago. Scientists found footprints from a hunt involving ancient human beings and a large prehistoric sloth. They discovered the footprints in what is now the White Sands National
2018年VOA慢速英语(五)月
By Nia Sutadi Santa Monica, California 30 April 2007 Orangutans are highly intelligent and are one of man's closest relatives. Found primarily in Indonesia, their name in English means People of the Forest. Just a century ago, their numbers were plen
2007年VOA标准英语（四月）
As It Is - Nature:butterfly and how roosters know when to crow Hi there. Im Kelly Jean Kelly. Today on As It Is, we are talking about nature. Specifically, about how roosters know when to crow, and one of the largest eggs the world has ever seen. But
2013年VOA慢速英语(四)月
发展中国家肉类消费量猛增 As the world population rises, the demand for meat, eggs and airy products is soaring in developing countries. The Worldwatch Institute warns that without safeguards the demand could strain the environment and pos
VOA双语新闻 2012年3月
Search teams: now there have been a new tool of their disposal,a nuclear submarine from the UK Kimra. Jonney Jim alive from Australia with the latest. So this is so what can you tell us about when it is expected to rive at the search area. Well, Ande
CNN2014年(四)月
Voice 1 Welcome to Spotlight. Im Liz Waid. Voice 2 And Im Nick Page. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 The fierce storm is violently pushing
环球英语 Spotlight
Pachyrhinosaurus like pretty much all members of the Ceratopsian family have no weaponry from behind their neck backwards. 肿鼻角龙和角龙家族的所有成员一样，从颈部往后没有什么武器。 From their neck back, they're completel
侏罗纪搏击俱乐部
Their teeth were recurved which means they start to point backwards and they were also very blade-like and had serrated edges. 它们的牙齿后弯曲，这意味着它们开始指向后方，它们也是很像利刃边缘呈锯齿状。 Three tons
侏罗纪搏击俱乐部
Animals at Risk: Who Cares? An animal species becomes extinct when it fails to produce enough young is each generation to keep pace with the death-rate. We can tell from fossil evidence in rocks that
有声英文阅读
这一集的内容收录的都是在美国一些比较幽默的说法, 也许在日常生活中不是那么常见, 但如果在适当的时机使用, 必可收画龙点睛之效. 1. Is she big-boned? 她
小笨霖英语笔记
The latest count shows, there are less than 530 wild Siberian tigers left in the world, with no more than 20 living in China. The Siberian tiger, also known as the Amur tiger, is the largest living felid and is on the edge of extinction. It is a tige
英语新闻视频
Giant spiders might not look appetizing, but in Cambodia they are considered a delicacy. First eaten by starving refugees during the Khmer Rouge era in the late 1970s, they are now a popular snack in Cambodia. They are so popular their numbers are n
VOA标准英语2009年(四月)
Under UV light, this mosquito larva reveals a red fluorescent marker in its nervous system, causing eyes and nerves to glow. The marker's presence tells the researchers in Riehle's team that this individual carries the genetic construct rendering it
VOA标准英语2010年(七)月
Wild horses are a legendary symbol of the American West. They mostly roam on vast areas of public land overseen by the U.S. government. To prevent overpopulation, the government periodically removes some of them. But critics say the practice is inhum
VOA标准英语2010年(四)月
The Sunni uprising in Iraq led by the Islamist extremist group ISIS is continuing with uncontested gains in the eastern province of Diyala where there is a Sunni majority. The insurgents say they will move on to Baghdad. This comes as fears grow amon
英语听力精选进阶版
Chinese wildlife officials are touting the success of a major crackdown launched last month to try to stem the illegal trade of endangered species. Chinese authorities have teamed up with 64 different countries around the world as part of the crackdo
2015CRI中国国际广播电台
The suspended head of European football Michel Platini has pulled out of the race to become the next FIFA president. He was banned from the game for eight years last month because of corruption allegations over a payment he received from the former F
英语听力精选进阶版