By Kent Klein Washington 31 May 2008 U.S. President George Bush says the Democratic-led Congress has failed to address a series of important issues, and he wants action soon. Democrats are pushing their Republican colleagues in Congress to support en

发表于:2018-12-08 / 阅读(52) / 评论(0) 分类 VOA标准英语2008年(五月)

With the weight of between three and five tons, the white rhinoceros checks in as the planet's second largest land mammal. AZUZ: And the sub species of the white rhino known as the northern white rhino is now just two animals away from complete extin

发表于:2018-12-20 / 阅读(68) / 评论(0) 分类 CNN美国有线新闻2018年5月

Lesson 13 Thames Waters 泰晤士河水域 Oxford has been ruined by the motor industry. The peace which Oxford once knew, and which a great university city should always have, has been swept ruthlessly away; and no benefactions and research endowmen

发表于:2018-12-24 / 阅读(112) / 评论(0) 分类 新概念英语85年上外美音版

African Penguins Pulled into an Ecological Trap生态陷阱迷惑了可爱的企鹅 Over millions of years, penguins have evolved a keen sense of where to find food. Once theyre old enough, they set off from the shores on which they hatched for the f

发表于:2018-12-24 / 阅读(76) / 评论(0) 分类 2017年Scientific American(三)月

Unit 54 Slow Food Movement The International Slow Food Movement was founded in 1986 by leftist journalist Carlo Petrini in a determined effort to wage intellectual war on the homogenization of food around the world. Spurred by the opening of Italy's

发表于:2018-12-30 / 阅读(49) / 评论(0) 分类 英语流行话题阅读:语境识词4500

Scientists at the Whitehead Institute in Cambridge, Massachusetts say it's fortunate for humans that the Y chromosome is not on the verge of extinction. That's because the Y is the chromosome that makes males males. The outlook is less favorable for

发表于:2019-01-08 / 阅读(297) / 评论(0) 分类 2005年NPR美国国家公共电台

By Craig Fitzpatrick Washington, DC 28 July 2006 watch Saving the Tigers report Tigers have long been a symbol of grace, power and majesty. Because of this their body parts are highly prized in Asian countries. A new study by environmentalists says

发表于:2019-01-09 / 阅读(104) / 评论(0) 分类 2006年VOA标准英语(七月)

Experts say one-third of the oceans' coral reefs face extinction by the middle of the century if nothing is done to save them. The reefs are home to a vast array of sea creatures, which experts say would also be endangered by the loss of the reefs.

发表于:2019-01-11 / 阅读(78) / 评论(0) 分类 VOA标准英语2008年(七月)

By Zulima Palacio Kauai, Hawaii 18 June 2007 The Hawaiian archipelago represents the most isolated group of islands in the world. Plants and animals that are common to many people elsewhere only made it to these islands in the last few hundred years

发表于:2019-01-11 / 阅读(99) / 评论(0) 分类 2007年VOA标准英语(六月)

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

发表于:2019-01-13 / 阅读(134) / 评论(0) 分类 2007年VOA标准英语(六月)

In a new report on Iraq, the U.S. Commission on International Religious Freedom says religious minorities in Iraq face persecution. The commission, which recommends that the U.S. government designate Iraq a country of particular concern because of r

发表于:2019-01-13 / 阅读(105) / 评论(0) 分类 VOA标准英语2008年(十二月)

Animal-Related Diseases Concern Scientists Health researchers and wildlife biologists say the number of infectious diseases that have jumped the boundary from animals to humans and between animal species is on the rise. Scientists believe the increas

发表于:2019-01-13 / 阅读(82) / 评论(0) 分类 VOA标准英语2012年(一月)

By Zulima Palacio Carroll County, Maryland 22 September 2009 The bog turtle In Maryland, environmental officials are working to save one of the smallest and rarest turtles in North America. The bog turtle had the power to move an entire highway proj

发表于:2019-01-13 / 阅读(72) / 评论(0) 分类 VOA标准英语2009年(九月)

US, World Act to Save Elephants 美国,世界采取行动拯救大象 WASHINGTON The Obama administration has unveiled a comprehensive strategy for combating wildlife trafficking in hopes of curbing illicit poaching that is threatening to wipe out el

发表于:2019-01-14 / 阅读(135) / 评论(0) 分类 VOA标准英语2014年(二月)

To find the answers, we need to rewind history around 14,000 years to a time when the first people set foot in North America. The continent was about to undergo a profound change, a change these new arrivals may have played a part in. Throughout the

发表于:2019-01-23 / 阅读(66) / 评论(0) 分类 探索与发现2013年

The same signs appear in young male mammoth tusks, but those living in North America at the end of Ice Age laid down their stress rings three years earlier than usual. In other words, it seems that young males were leaving the herd at an earlier age.

发表于:2019-01-23 / 阅读(70) / 评论(0) 分类 探索与发现2013年

By Trish Anderton Bali 05 December 2007 At the U.N. conference on Global Climate Change in Bali, the early talk has focused on whether some of the major developed countries will commit to cutting greenhouse gas emissions in the coming years. European

发表于:2019-01-27 / 阅读(86) / 评论(0) 分类 VOA常速英语2007年(十二月)

By David McAlary Washington 10 May 2006 There is new evidence in the case of the missing woolly mammoth. In fact, several species of large mammals in addition to the mammoth went missing at the end of

发表于:2019-01-31 / 阅读(134) / 评论(0) 分类 2006年VOA标准英语(五月)

Hi there, I'm Ore with the BBC World News for Children. Coming up: Japan's mission to super hot planet. A new survey says kids care more about computers than animals. And Inter Milan face Bayern Munich in the Champion's League final. First up, after

发表于:2019-02-16 / 阅读(60) / 评论(0) 分类 英语听力文摘 English Digest

Coextinction 绝种是指生物群体逐渐消失的过程。物种和较大族群常态性的灭绝,并由更进步的形式所取代,这是进化的正常过程。然而,从化石的记录来看,有时会出现整个科目的动物和植物都

发表于:2019-03-09 / 阅读(123) / 评论(0) 分类 英语听力文摘 English Digest