吸烟如何影响我们的健康（英文）

摘要

＜正＞人人都知道吸烟有害健康,那么你知道吸烟具体有什么危害吗?There are no physical （身体的） reasons to start smoking.The body doesn’t need tobacco the way it needs food,water,sleep,and exercise.In fact,many of the chemicals（化学物质） in cigarettes are actually poisons that can kill.