单词：bergmann rearrangement
单词：bergmann rearrangement 相关文章
Time again for our Website of the Week, when we showcase interesting and innovative online destinations. This time it's an educational site where you can find more than 200 ways to improve your English. The Purdue Online Writing Lab is a sizeable col
VOA标准英语2010年(一月)
Education Report - Thinking Outside the Five-Paragraph Essay This is the VOA Special English Education Report. Millions of students have been taught a formula that has nothing to do with chemistry. The formula is for how to write a five-paragraph ess
2012年VOA慢速英语(七)月
This is the VOA Special English Education Report. Many colleges and universities in the United States have writing centers to help students improve their skills. Some materials are available free at Web sites like the Purdue Online Writing Lab, or OW
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