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99 吸收金属原料的植物有助于抗癌药品的研制 AGRICULTURE REPORT September 25, 2001: Plants that Absorb MetalsBy George Grow (Start at 1'00

发表于:2019-01-02 / 阅读(41) / 评论(0) 分类 科技之光

Russian and Georgian leaders traded accusations of failing to observe a key part of their cease-fire agreement Tuesday, as foreign ministers from NATO convened in Brussels to figure out how to respond to the conflict that erupted in Georgia's breaka

发表于:2019-01-13 / 阅读(39) / 评论(0) 分类 VOA标准英语2008年(八月)

Study Shows Vitamin E Increases Prostate Cancer Risk A number of medical studies over the years suggested that vitamin E, taken as a dietary supplement, might help prevent prostate cancer. But new research finds not only that the earlier studies were

发表于:2019-01-14 / 阅读(39) / 评论(0) 分类 VOA标准英语2011年(十月)

Scientists Suggest Adding Selenium to Diets in Malawi The study, which was published in the journal Scientific Reports, found that most Malawi soils do not have an adequate amount of selenium required for human nutrition. In the report, researchers a

发表于:2019-01-14 / 阅读(38) / 评论(0) 分类 VOA标准英语2013年(三月)

By Alisha Ryu Nairobi 02 January 2008 Ethnic tensions continue to run high in Kenya where there have been threats of revenge following the deaths on Tuesday of at least 30 children and adults who had taken refuge in a church in the Rift Valley town o

发表于:2019-01-30 / 阅读(41) / 评论(0) 分类 VOA标准英语2008年(一月)

The Most Valuable Employees: Tame Tensions 最宝贵的员工:缓解紧张的高手 4 Workplace Peacekeepers Who Get Attention 引起上司注意的4中职场调解员 Furloughs, layoffs, burdened bosses, and stressed coworkers: Tension can stifl

发表于:2019-02-07 / 阅读(36) / 评论(0) 分类 实用英语
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