Technology Report - Are Smartphone Apps Encouraging Young Smokers? 科技报道 - 一些智能手机应用程序鼓励年轻人吸烟 From VOA Learning English, this is the Technology Report in Special English. 这里是美国之音慢速英语科技报...
By David McAlary Washington 25 January 2006 When it comes to lung cancer rates among smokers, scientists say race and ethnicity matter. A new study reports significant differences in the rates among s...