美洲—布什任命古巴政权过渡协调员

Bush Names Coordinator for Cuban Political Transition 布什任命古巴政权过渡协调员 President Bush has named a veteran congressional staff official, Caleb McCarry, to the post of Transition

美洲—美军用“场面浸入式”方法提高部队作战经验

US Army Immerses Troops in Battlefield Experiences 美军用“场面浸入式”方法提高部队作战经验 The U.S. Army is using a new training concept as it prepares troops to go to Iraq and Af

美洲—布什维护对伊政策，称在中东看到希望

Bush Defends Iraq Policy, Sees Hope in Middle East 布什维护对伊政策，称在中东看到希望 President Bush stressing America's security is linked to progress in Iraq and the greater Middle

英语听力：探索发现 2012-11-28 美洲大平原 American Serengeti—14

13,000 years ago, the ice age cheetah was the pronghorn's greatest enemy. And pronghorn would have needed all their amazing speed. The American cheetah was larger than its African cousin. But it had the same Achilles' heel. A cheetah's high-performan

美洲－美国、欧洲共同致力于伊拉克核武器问题

US, Europe Working Together on Iran Nuclear Issues International Atomic Energy Agency chief Mohamed ElBaradei says Iran has concealed sensitive nuclear activities for nearly 20 years, creating what he

美洲－美国、加拿大和墨西哥就进一步建立联系达成共识

US, Canada, Mexico Agree to Forge Closer Ties In a joint statement released after their formal meeting on the campus of Baylor University in Waco , the three leaders announced the creation of the Secu

美洲—布什助手再次为中情局特工泄密案作证

Bush Aide to Testify again in CIA Leak Case 布什助手再次为中情局特工泄密案作证 President Bush's top political adviser, Karl Rove, has been asked to provide more testimony to a grand j

美洲—利比在中情局特工泄密案中声称自己无罪

Libby Pleads Not Guilty in CIA Leak Case 利比在中情局特工泄密案中声称自己无罪 Former vice presidential aide Lewis Libby pleaded not guilty Thursday to criminal charges related to the

美洲—美国举行长达一天的葬礼以纪念民权女英雄罗莎·帕克斯

US Civil Rights Heroine Rosa Parks Honored with Day-Long Funeral 美国举行长达一天的葬礼以纪念民权女英雄罗莎·帕克斯 Civil rights heroine Rosa Parks, who died last week at age 9

美洲—美立法者加大力度平息穆斯林世界中的反美情绪

US Lawmakers Push Effort to Counter Anti-Americanism in Muslim World 美立法者加大力度平息穆斯林世界中的反美情绪 US lawmakers have urged the State Department's top public diplomacy

美洲—布什:撤军会削弱美国实力

Bush: Troop Withdrawal Would Weaken US 布什:撤军会削弱美国实力 There were protestors in Utah Monday when the president gave a speech there to a veterans group. More are expected to turn up

美洲－美国释放关塔那莫湾的英国战俘

US Frees British Prisoners from Guantanamo The last four Britons held at the U.S. military detention camp in Guantanamo Bay, Cuba, have been released and have returned home, where they are in police c

美洲—墨西哥与加拿大共同指责美国在贸易上的不公平

Mexico, Canada Blame US for Unfairness in Trade 墨西哥与加拿大共同指责美国在贸易上的不公平 Boosting Mexican-Canadian trade and strong support for the North America Free Trade Agre

美洲－南美与阿拉伯国家领导人就经济和政治问题举行会谈

South American, Arab Leaders Talk Business, Politics South American and Arab leaders got down to business at a summit in the Brazilian capital, Brasilia , Tuesday working to improve economic ties betw

英语听力：探索发现 2012-11-02 美洲大平原 American Serengeti—3

Even the mastodon is buried here, a long dead relative of modern elephants. This was once a bear, but not like any bear in North America today. Claw marks gouged into the cave wall showed the bear was not killed direct by the fall. It made a desperat

英语听力：探索发现 2012-11-07 美洲大平原 American Serengeti—5

Mud from the ancient riverbanks is good for building nests. lt also holds more evidence that will help us to reconstruct the ice age past. Every now and then,new clues surface, hinting at what else might lie beneath. ln this dried-up pond in South Da

英语听力：探索发现 2012-11-09 美洲大平原 American Serengeti—6

The site was once a spring-fed pond, full of water. Mammoths were tempted in to drink. But when they tried to climb back out, the banks were steep and slippery. Just like the short-faced bear imprisoned underground, some became trapped. Scavengers wo

英语听力：探索发现 2012-11-11 美洲大平原 American Serengeti—7

The store of pollen paints a picture of the plains of 13,000 years ago, a picture that looks very different from the open prairie grassland of today. But why did this region look so different back then? The ice sheets to the north, although retreatin

英语听力：探索发现 2012-11-14 美洲大平原 American Serengeti—8

The Osage orange seeds were carried far across the plains, before being deposited, pre-packed in their fertilizer growbags, ready to take root. As the ice age waned, the milder climate and the mixed vegetation meant the plains were able to support a

英语听力：探索发现 2012-10-31 美洲大平原 American Serengeti—2

As North America emerged from the grip of the last ice age, the door was opened to outsiders for the very first time. As these early immigrants pushed their way south, they found themselves in a land of an unimaginable opportunity, overflowing with g