除核战争、饥荒和瘟疫外,烟草对世界人民健康的威胁最大。每年新发病的肺癌病人大约一百万,到2000年将增加到二百万。由吸烟引起的冠状动脉硬化性心脏病和慢性阻塞性肺部疾病使受害人的数字大增。虽然 Apart from nuclear wars, famines and plagues, tobacco poses the greatest threat to the health of people throughout the world. Approximately one million lung cancer patients are newly diagnosed every year and will increase to two million by the year 2000. Smoking-induced coronary heart disease and chronic obstructive pulmonary disease have greatly increased the number of victims. although