单词：basic zinc carbonate
单词：basic zinc carbonate 相关文章
SCIENCE IN THE NEWS - From A to Zinc: The Story of Vitamins By Nancy Steinbach Broadcast: Tuesday, March 29, 2005 (MUSIC) VOICE ONE: I'm Bob Doughty with Phoebe Zimmermann, and this is the VOA Special
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Zinc supplements reduce the average cold by about a day and also make symptoms（症状） less severe, according to the latest findings. There's no cure for the common cold, but there's no shortage of ways to treat the symptoms. For a number of year
英语新闻
May 1 marks the 50th anniversary of a special computer language aimed at enabling college students not trained in mathematics to use computers. The birth of BASIC is now seen as a major step toward the era of personal computers. 50 years ago, compute
英语新闻
By Douglas Bakshian Manila 06 May 2008 A new report says the lives of millions of young children could be saved each year if basic medical care and medicine are made available to the poor. Douglas Bakshian has more from Manila. The report by the U.S.
VOA标准英语2008年（五月）
日常生活中，意外伤害很难避免。如果我们不及时救治或者操作不当的话，很可能会对自身或者他人的身体造成伤害，所以，掌握一些急救常识非常必要。下面我们来看一段关于学习急救的对
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