单词：tetrapolar species
单词：tetrapolar species 相关文章
From Birds to Bears, Animals Face Danger Around the World 从鸟类到熊,世界各地的动物都面临危险 From VOA Learning English, this is Science in the News. Im Anna Matteo. And Im Christopher Cruise. Today on the program, we tell about hund
2014年VOA慢速英语(七)月
Five species of shark have been put on a wildlife protection list. The move has been made at the final meeting of the Convention on International Trade in Endangered Species in Bangkok, Thailand. The decision restricts cross-border trade in the ocean
英闻天下
This is Scientific American Sixty Seconds Science, I'm Sophie Bushwick, got a minute? When Mexican tetra fish moved into darker caves long ago, they evolved to deal with the dark by becoming albino and going blind. A new research shows that the chang
Scientific American(一)月
Researchers at Penn State University and the University of Buffalo have completed the most in depth bear DNA study to date. The project has revealed a lot about genetic relationships between bears, and also the unlikely romances that pepper their his
初学者听力文摘精选
Are We Endangered? Steve Jones is an environmental expert who tries to keep animals and plants from becoming endangered. We are not alone in the world. We human beings could not survive without all the plants and animals around us. We often talk abou
高中英语人教版第一册课本听力
Animals at Risk from Increased Arctic Shipping The polar bear may be the animal most often identified with climate change, but it is far from the only creature at risk from rising temperatures. The northernmost part of Earth is warming two to three t
2018年VOA慢速英语(七)月
T Tanshinone IIA 丹参酮IIA Tanshinone I 丹参酮I Tanshinone IIB 丹参酮IIB Taraxasterol 蒲公英甾醇 Taraxerol 蒲公英赛醇 Tauro ursodesoxy cholic acid 牛磺熊去氧胆酸 Taxifolin 花旗
医务英语
ARE WE WNDANGERED? steve jones is an environmental expert who tries to keep animals and plants from becoming endanged,we are not alone in the world. we human beings could not survuve without all the plants and animals around us. we often talk about h
高一上听力与朗读
Are We Endangered? Steve Jones is an environmental expert who tries to keep animals and plants from becoming endangered. We are not alone in the world. We human beings could not survive without all the plants and animals around us. We often talk abou
高中英语听力人教版第一册
By David McAlary Washington 27 December 2006 The United States is proposing to declare polar bears a threatened species because of their shrinking Arctic ice habitat. As we hear from VOA's David McAlary, analysts say the move is an unusual admission
2006年VOA标准英语（十二月）
By Lisa Schlein Geneva 12 September 2007 A new report says the number of species threatened with extinction is escalating. The World Conservation Union, which has just released its Red List of Threatened Species, warns life on Earth will continue to
2007年VOA标准英语（九月）
By Paul Sisco Washington 16 May 2008 The United States Government, Wednesday [May 14] officially added polar bears to the list of threatened animals under the Endangered Species Act. Bush administration scientists decided the species is at risk of be
VOA标准英语2008年（五月）
New Species Might be Human Ancestor Fossils found in a South African cave might belong to a new species of early humans that holds a unique place on the evolutionary road to modern man. On a 2008 mapping expedition in Malapa, South Africa, American p
VOA标准英语2011年(九月)
【NPR边听边练】致力于提供新鲜有趣、饶有意味的时讯资料，致力于通过精听的方式促进听力提高，致力于不断开阔眼界和深入了解美国观点。 精听建议： 先完整地把一条新闻听一到三遍，争
NPR边听边练
JINAN, May 14 (Xinhua) -- Chinese scientists said Saturday that they have found a new species of giant theropod dinosaur in the eastern province of Shandong. The new species, described as a close relative of Tyrannosaurus rex (T. rex), has been named
英语新闻
Researchers working for the World Wildlife Fund have warned that the effects of climate change pose a serious threat to rare species of wildlife discovered within the past year in Southeast Asia, including a fanged frog and a leopard-striped gecko. A
英语杂谈
So it was the fall of 1902, and President Theodore Roosevelt needed a little break from the White House, so he took a train to Mississippi to do a little black bear hunting outside of a town called Smedes. The first day of the hunt, they didn't see a
英语语言学习
动物也爱散步？ When youve been to the zoo have you noticed how some of the animals pace around a lot? Scientists think the problem might be that the animals miss the freedom to roam . That make sense. After all, a polar bears natural range is
英语听力文摘 English Digest
10 Getting The Lead Out 第十章 把铅撵出去 In the late 1940s, a graduate student at the University of Chicago named Clair Patterson (who was, first name notwithstanding, an Iowa farm boy by origin) was using a new method of lead isotope measur
万物简史
CANBERRA, March 23 (Xinhua) -- Up to 45 native species in Western Australia's Kimberley region will die out within 20 years if no action is taken, latest study showed on Wednesday. The Priority Threat Management to Protect Kimberley Wildlife report,
英语新闻