单词:tert-butoxy
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This is Scientific American's 60-Second Science. I am Adam Hamterture, got a minute? What's sixteen feet tall and 9,550 years old? Its the world's oldest tree. The worn and weathered spruce grows in Sweden's windswept tundra. But, until recently, wel
86 去痛片须慎用 DATE=8-16-01 TITLE=SCIENCE REPORT - OxyContin Warning BYLINE=Jerilyn Watson (Start at 1'02
By Phuong Tran Dakar 14 January 2007 Miners handle stones on a hilltop of Mbola mines in Democratic Republic of Congo (File photo) The collapse of a diamond pit mine in the Democratic Republic of Congo earlier this month, in which 15 people were repo
1. 9/11 attack ringleader Mohamed Atta is all smiles with another hijacker on a new video reportedly Atta's last will. The Associated Press secured exclusive rights to the video from the London Sunday
1. Two more Amish schoolgirls died overnight following a deadly shooting in their one-room schoolhouse in Pennsylvania Monday. That brings the total number of girls fatally injured in the incident to
By Dan Robinson Capitol Hill 26 October 2006 As members of Congress campaign for the upcoming legislative election, back in the U.S. Capitol a congressional ethics committee completed the third week of an investigation that could yet have a major im
By Dan Robinson Washington 03 October 2006 The controversy over a former Republican congressman who resigned amid revelations he sent sexually suggestive messages to male pages continues to reverberate in Washington and across the United States. Pre
STEVE EMBER: Im Steve Ember. BARBARA KLEIN: And Im Barbara Klein with EXPLORATIONS in VOA Special English. Today we talk about a method that helps provide low-income people with the financial services they need to improve their lives. Organizations a
By Dan Robinson Capitol Hill 13 October 2006 Several issues are expected to be key in influencing how people vote in next month's U.S. congressional elections, from public perceptions about President Bush's handling of the war in Iraq, [and] the sta
Beginners. Well, it's time for a new dog. For the past year, we have been a one dog family. But, you know, our dog, Rosie, is a wildly social lady. She goes crazy any time she meets another dog, a cat, a mouse, or a bird, let alone a human. But, the
By Melinda Smith Washington 14 May 2007 Top executives of the company that makes a powerful painkiller called Oxycontin admitted this week they lied about the drug's addictive qualities in order to boost sales. As VOA's Melinda Smith reports, worldwi
By Dan Robinson Washington 05 October 2006 Majority Republicans in the House of Representatives have moved to prevent further damage from the scandal involving a former Republican congressman, Mark Foley, who resigned amid revelations he sent sexual
By Dan Robinson Capitol Hill 10 October 2006 The Republican Speaker of the House of Representatives has pledged to fire anyone on his staff who may have tried to cover up improper Internet contacts between a former Republican congressman, Mark Foley
By Dan Robinson Capitol Hill 15 November 2007 The longest-serving Republican speaker of the House of Representatives gave his formal farewell to Congress on Thursday. Dennis Hastert presided over the House for nearly a decade, a period that included
By Dan Robinson Washington 10 December 2006 Democrats and Republicans in the House of Representatives have combined conciliatory rhetoric with criticism over legislative goals as Congress moves toward adjournment. VOA's Dan Robinson reports from Cap
By Dan Robinson Capitol Hill 04 October 2006 An ethics committee in the House of Representatives meets Thursday amid the continuing scandal involving a former U.S. congressman, Mark Foley, and sexually explicit e-mails he allegedly sent to congressi
Beginners. Today, Foxy had an appointment with the vet for vaccinations and a general check-up. She is about eight months old, so she needed her second set of vaccinations. The vet also needed to see if her growth was normal and healthy. I put her in
RIO DE JANEIRO, Jan. 25 (Xinhua) -- Former Brazil international goalkeeper Dida will miss Gremio's Copa Libertadores qualifying decider against Ecuador's Liga de Quito next Wednesday with a shoulder injury. Dida hurt his right shoulder during last We