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Study Shows PFCs Can Reduce Vaccine Effectiveness When children are vaccinated their immune systems produce antibodies that protect them from debilitating and potentially deadly childhood infections, such as polio, measles, diphtheria and tetanus. Th
VOA标准英语2012年(二月)
President-elect Barack Obama is urging Congress to act quickly on his economic recovery program, warning that inaction by Washington could extend the current recession for years. President-elect Barack Obama makes remarks on nation's economy at Geor
VOA标准英语2009年(一月)
Thursday, March 17, is Saint Patrick's Day, a time when native-born Irish and Irish-Americans will parade and pipe their way up Manhattan's famed Fifth Avenue. The 2011 event, which is expected to include well over 150,000 thousand marchers, will be
VOA标准英语2011年(三月)
Although Zimbabwe President Robert Mugabe's ZANU-PF party seems to have accepted, in public at least, that elections are not possible before year end, many new black farmers north of the capital were told Tuesday by senior army personnel there would
VOA标准英语2011年(一月)
Many ZANU-PF delegates say they want to decide who will succeed President Robert Mugabe, who will be 86 in February. President Robert Mugabe received fewer votes in the presidential election last year than MDC leader Morgan Tsvangirai. Peta Thornycro
VOA标准英语2009年(十二月)
A senior ally of Zimbabwe's President Robert Mugabe has accused the European Union of undermining the power sharing agreement with Prime Minister Morgan Tsvangirai. The charge follows the first visit to Zimbabwe by senior EU officials since the Euro
VOA标准英语2009年(九月)