单词：phyletic extinction
单词：phyletic extinction 相关文章
Conservationists are overestimating the number of species that have been driven to extinction(消失), scientists have said. A study has found that a third of all mammal species declared extinct in the past few centuries have turned up alive and well
英语新闻
Neil: Hello and welcome to Six-Minute English from BBC Learning English, I'm Neil and with me today is Rosie. Rosie: Hi there. Neil: Well, today we're talking about men. Rosie: That sounds interesting. Neil: It is very interesting especially if you'r
六分钟英语
By Carol Pearson Washington, D.C. 26 June 2007 Smallpox was the first infectious disease ever to be eradicated worldwide. But now, thanks to a two-decade campaign, guinea worm disease is about to be eradicated as well. Unlike smallpox, guinea worm di
2007年VOA标准英语（六月）
By Jane M Friedman Washington, DC 20 April 2006 watch Biotech Industry report A report by the consulting firm Ernst and Young says that, although huge pharmaceutical firms like Merck and Pfizer pour b
2006年VOA标准英语（四月）
The Yangtze River is a major habitant for finless porpoise, an aquatic marine mammal close to dolphins. However due to increasing human activities the number of the animal has been declining in China over the years. Provinces along the Yangtze River
2018CRI中国国际广播电台
Cambodia is home to the largest population of sun bears left in the wild. As the worlds smallest bear species, they are now facing a high risk of extinction due to the twin threat of habitat loss and illegal hunting. Charities are working hard to sav
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