单词:hexamethylenebisacetamide
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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
[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
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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
Ruling party candidate Malam Bacai Sanha has won Guinea-Bissau's presidential election. It was a vote to replace long-time leader Joao Bernardo Vieira, who was killed by mutinous troops five months ago. Malam Bacai Sanha at a polling station in Biss
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
By Cheng Xiao Hong and Zhang Songlin St. Louis, Missouri 19 September 2006 watch Bissell Dinner Theatre The Bissell Mansion Restaurant and Dinner Theater in the Midwestern city of St. Louis, Missouri promises visitors the chance to get away with mur
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VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. I'm Bob Doughty. VOICE TWO: And I'm Faith Lapidus. This week, we will tell about newly-found organisms that are said to be among the oldest living organisms on Earth. And, we will tell a
Technology Report - Scientists Develop Smartphone App for Eye Exams This is the VOA Special English Technology Report. More than two hundred eighty million people around the world have vision problems or are blind. The World Health Organization says
By Andre de Nesnera Washington 20 April 2006 As Iran continues to defy the United Nations Security Council by enriching uranium -- a process that could lead to building nuclear weapons -- the internat
'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
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
By Sean Maroney New York 20 June 2007 In 1967, Israel countered what it saw as a threat of annihilation by its neighbors and defeated three Arab armies in six days. As a result, Israel nearly tripled the terroritory under its control and began an occ
By Scott Stearns Dakar 10 November 2009 Prosecutors at the U.N. Special Court for Sierra Leone have begun their cross-examination of former Liberian President Charles Taylor who is facing charges of war crimes and crimes against humanity. Former Lib
PARIS, Jan. 11 (Xinhua) -- Triple Olympic champion Usain Bolt of Jamaica said on Wednesday that he will compete in the Bislett Games in Oslo on June 7 to prepare for the London Games in August. Bolt, 25, world record holder in the 100 and 200m, surre
OSLO, June 9 (Xinhua) -- Usain Bolt ran the year's fastest time of 19.86 seconds to grab the men's 200m title at the Bislett Games here on Thursday in rainy conditions. Bolt delighted the crowd at Oslo's premiere athletics stadium with his usual pre-
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. ---------
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
BRUSSELS, May 31 (Xinhua) -- Baby bottles containing the substance Bisphenol A (BPA) would have to be pulled from the shelves across the European Union (EU) starting from Wednesday, in a milestone move to better protect the health of EU citizens, an