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1 Million Years B.C.: Humans Rare A study in the Proceedings of the National Academy of Sciences used genomic analysis of modern humans to reveal that the population of our ancestors a million years back was below 20,000. Karen Hopkin reports At one
Small Businesses Make Big 小型企业慢慢做大 Welcome to This is America. Im Christopher Cruise. And Im Faith Lapidus. Many small, family-owned businesses in the United States are struggling to survive. Along with the sluggish economy, they face
Some smaller retailers have been forced to close their doors because consumers are spending more carefully and also are favoring warehouse chain stores like Walmart and Costco. Chris Simkins | Rockville, Maryland 18 December 2009 Photo: VOA Image Man
Joe DeCapua 29 March 2010 Rural agri-business can drive economic growth. Rural agri-businesses can provide a career opportunity for youth. And rural agri-businesses can mean a pathway out of poverty. The first Global Conference on Agricultural Resear
(1) 过去完成时表示以过去某时间为起点以前所发生的动作或存在的状态,即:过去完成时强调过去的过去,而一般过去时只表示以现在时间为起点以前所发生的事情或存在的状态。如: He st
Life is full of small questions: What will I wear to my meeting? Whats for lunch? Subway or cab? 生活里琐碎的问题源源不绝:穿什么去开会?午饭吃什么?乘地铁还是打车? Small questions are important as they facilitate t