标题: 求解 [打印本页] 作者: maggiemd 时间: 2016-4-15 23:21 标题: 求解 请教前辈，在FOV上看到一道逻辑题原题是一个调查活到100岁的人吸烟率比其他15岁及以上的人低，所以说吸烟在增长
解题是这样说的it is likely that those who lived to be 100 did so in part by not smoking , and that plenty of people born 100 or more years ago did smoke and did not live to be 100请问怎么理解呢？