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By Jessica Berman Washington 12 October 2006 Researchers have developed a new tuberculosis test that makes a diagnosis possible in a fraction of the time it can take using other methods. Experts say the test would be especially useful in the develop
发表于:2019-01-31 / 阅读(133) / 评论(0)
2006年VOA标准英语（十月）
2006年VOA标准英语（十月）
Chinese and European Union leaders have sent out messages of congratulations to mark the 40th anniversary of the China-EU diplomatic ties which is today. In his message to European Council President Donald Tusk and European Commission President Jean-
发表于:2019-02-14 / 阅读(86) / 评论(0)
2015CRI中国国际广播电台
2015CRI中国国际广播电台