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WHO: Balanced Approach for New Bird Flu Virus Strain In 2011, scientists discovered they had created a highly contagious and deadly form of H5N1 commonly called avian or bird flu. When the discovery was announced, debate erupted over whether the rese
By Kent Klein Washington 26 March 2008 AIDS researchers are discussing where to go next, after a potential vaccine failed in two human trials several months ago. As VOA's Kent Klein reports, numerous approaches were considered at the Summit on HIV Va
场景特点:主要涉及到一些和课程相关事项的解决方法。一定以conversation出现,常见话题有:安排考试,调课事宜,课程辅助材料等。 *常见套路: *和考试相关:考试分数;考试复习;安排考
This is Scientific American 60 second science, I am Chris primsadiasher, got a minute? Study in birds for a living might sound like a cool job but it is not without logistical challenges for us land down animals. I have a northern gannet, so a really
Cutting-edge 3D technology is changing the way Hollywood makes movies - but away from the world of showbiz this technology is also having an impact on everyday life. Surgeons are now able to perform life-saving operations across continents, and float
econometric model 计量经济模式 econometrician 计量经济学家 econometrics 计量经济学 economic adjustment 经济调控 economic aggregate 经济总体数字 Economic Analysis Division [F