N-乙基顺丁烯二酰亚胺

2006年VOA标准英语-Chile Inaugurates First Woman President

By David Gollust Santiago 11 March 2006 Michelle Bachelet has been sworn in as Chile's first elected woman president. The inauguration in the Pacific coast city of Valparaiso drew leaders and official

发表于:2018-12-16 / 阅读(88) / 评论(0)

2006年VOA标准英语（三月）

2006年VOA标准英语-Japan Takes Diplomatic Role in Iran Nuclea

By Steve Herman Tokyo 17 January 2006 Taro Aso Japan says it hopes to use a long-standing relationship with Iran to help avert a crisis over Tehran's nuclear ambitions. The announcement came after key

发表于:2019-01-09 / 阅读(327) / 评论(0)

2006年VOA标准英语（一月）

2006年VOA标准英语-Middle East Diplomatic Efforts Intensify

By Jim Teeple Jerusalem 18 July 2006 Diplomatic efforts to end the latest conflict in the Middle East intensified, Tuesday, as United Nations diplomats met with senior Israeli officials in Jerusalem, after holding talks in Beirut. The talks took pla

发表于:2019-01-31 / 阅读(91) / 评论(0)

2006年VOA标准英语（七月）

VOA标准英语2009年-Ethiopia to Complete Somalia Withdrawal 'Within

A spokesman says Ethiopian troops will complete their withdrawal from Somalia within days, and that sufficient precautions have been made to prevent a feared power vacuum when they are gone. Troop convoys have been seen pulling back to positions acr

发表于:2019-01-31 / 阅读(50) / 评论(0)

VOA标准英语2009年(一月)

万物简史第225期:把铅撵出去(14)

By counting back through these layers and measuring the amount of lead in each, he could work out global lead concentrations at any time for hundreds, or even thousands, of years. The notion became the foundation of ice core studies, on which much mo

发表于:2019-02-17 / 阅读(60) / 评论(0)

万物简史

TED演讲获奖青少年,科技在行动(1)

If you were going to a restaurant and wanted a healthier option, 如果你去饭店，你想吃得健康一点， which would you choose, grilled or fried chicken? 你会选择哪种食品呢，烤鸡还是炸鸡？ Now most people would answer grill

发表于:2019-02-21 / 阅读(68) / 评论(0)

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