单词：hexamethylenetetramines
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There are many arguments about the advantages and disadvantages of examinations. Some people think that examinations can help them review the lessons regularly, while others maintain that too many examinations have frustrated them. To me I think an e
疯狂英语易背作文
[00:00.00]Module 1 LEARNING METHODS [00:05.54]Unit 3 Some of the exams were very difficult. [00:11.24]4 Listen and complete. [00:15.06]Mum,I have my report here. [00:18.39]Great. Can you give it to me,please? [00:21.26]Sure. [00:22.78]Oh, this is for
外研社新标准初中英语九年级
New IMAX Space Documentary Brings Images to Life 新的3D IMXA给生活带来新的享受 What we watched then were blurry and grainy TV transmissions. Now, the 45-minute IMAX documentary puts the aud
VOA2005（下）--环境科学探索
Marcos Mcpeek Villatoro : My father worked in the coal mines of Kentucky. It was his last job before he retired. After a life moving from one mechanic's shop job to another, this was a real job, said the friend who offered it to him. Sure, it was ri
2009年NPR美国国家公共电台7月
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
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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
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By Nancy Steinbach EDUCATION REPORT -July 25, 2002: SAT Examination This is the VOA Special English Education Report. Each year, millions of people around the world apply to study at American colleges
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By Jill Moss DEVELOPMENT REPORT - January 21, 2002: Clearing Land Mines in Afghanistan This is the VOA Special English Development Report. Each year, thousands of people are killed or injured by explo
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BEIJING, Feb. 25 (Xinhua) -- China's safety watchdog said Monday it will no longer approve new coal mines that do not meet production capacity requirements in 2013 in order to ensure work safety. High-gas coal mines with an annual production of less
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By Deborah Tate Capitol Hill 09 February 2007 A U.S. Senate panel Friday opened hearings on an internal Defense Department report criticizing the intelligence work on Iraq by senior civilian officials before the U.S.-led invasion in 2003. VOA's Debo
2007年VOA标准英语（二月）
By Phuong Tran Dakar 23 May 2007 The first international human rights film festival to take place in Bangui, Central African Republic, has ended. During the week-long festival, about 15,000 people saw 10 films. Festival organizers say they were under
2007年VOA标准英语（五月）
Founder, CEO Heidi Kuhn inspires with her passion of hope and change Eric Bersh | San Rafael, CA 23 April 2010 Heidi Kuhn, founder, CEO of Roots of Peace Grapevines are now flourishing where landmines once poisoned the soil of war-torn countries. Tha
VOA标准英语2010年(四)月
'Terrorists in Love' Examines Islamic Radicals How does a young man transform from a law-abiding middle-class citizen into a terrorist? Ken Ballen, a former federal prosecutor, spent five years trying to find answers to that question. The result is a
VOA标准英语2011年(十一月)
DAVID GREENE, HOST: Families across the United States are fighting with the federal government over a deadly chemical. Dozens of people have died from inhaling methylene chloride. This is an ingredient in common paint removers. NPR's Rebecca Hersher
2018年NPR美国国家公共电台11月
By Shahnawaz Khan Srinigar 29 October 2007 The International Committee to Ban Land Mines has been urging nations around the world to ban land mines. While India has resisted the ban because of security issues on its borders, an alliance of insurgents
2007年VOA常速英语（十月）
By Deborah Tate Washington 18 July 2006 The Bush administration's nuclear accord with the Indian government was the focus of a Senate committee hearing Tuesday, with witnesses underscoring the benefits to both the United States and India. ---------
2006年VOA标准英语（七月）
By Mohamed Elshinnawi Washington 07 May 2007 A recent symposium in Washington, D.C. examined What does it mean to be Muslim in America? Georgetown University's Center for Muslim-Christian Understanding hosted the event, along with On Faith , an inter
2007年VOA标准英语（五月）
By Deborah Tate Washington 12 July 2006 The Bush administration - pressing Congress to complete immigration reform legislation, is highlighting the contributions immigrants make to the U.S. economy. Carlos Gutierrez testifies on Capitol Hill, Wednes
2006年VOA标准英语（七月）
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
BEIJING, Nov. 24 (Xinhua) -- China's workplace safety authorities on Saturday required tougher standards on reopening coal mines in production suspension in the wake of a deadly coal mine accident. Some coal mines were ordered to suspend production d
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