氢氧化铝凝胶片剂

The dilemma has been haunting the United States for decades. Do you prop up a regime that treats you favorably, even if that regime does not necessarily share your democratic principles? Or do you stand firm on your values, even if it means losing a

发表于:2018-12-16 / 阅读(43) / 评论(0) 分类 VOA标准英语2011年(二月)

by Jason Marshall In the last article, we learned that there are several ways to calculate the average value of a sample of data. We focused on one such method, the arithmetic mean, and used it to calculate the average number of potato chips in a bag

发表于:2019-01-02 / 阅读(109) / 评论(0) 分类 数学英语

经济学这门忧郁科学在这场乐观的讲演中大放异彩. 经济学家Alex Tabarrok认为自由贸易和全球化正把曾经分裂的世界塑造成一个共享创新的社会, 这个社会的未来会比任何人的预测都更加健康,幸

发表于:2019-01-05 / 阅读(61) / 评论(0) 分类 TED公开课:世界权势大转移

Break out a fight and raise your arms. Skip those heartbeats, run, chase the illusion. The indifference of few destroys us all. Like rings from drops in a pool of blood we break like a sick single crop. And watch with bitter eyes, no sound, a frown,

发表于:2019-01-10 / 阅读(64) / 评论(0) 分类 英文摇滚歌曲

今天我们要讲的是,要是你和朋友一起出去吃饭,到最后由谁来付账的问题。在美国,要是一个朋友约你一起出去吃午饭,那当然由他付钱。然而,要是你

发表于:2019-01-11 / 阅读(114) / 评论(0) 分类 美国习惯用语

地道美语听力播客English as a Second Language Podcast (ESLPod),是一家位于美国加州洛杉矶的英语教育研究机构推出的英文听力会话,于2005年7月23日首播, 主播Dr. Jeff McQuillan为南加州大学的语言学博士

发表于:2019-01-16 / 阅读(112) / 评论(0) 分类 地道美语播客