请帮忙分析英语句子语法.第一句 For many Americans,the tobacco industry's di
请帮忙分析英语句子语法.
第一句
For many Americans,the tobacco industry's disingenuousness became a matter of public record during a Congressional hearing on April 14,1994.
第二句
In the 1930s and 1940s,cigarettes were either healthy because they were implicitly endorsed by a kindly doctor,or sexy.
第三句
Each executive raised his right hand and solemnly swore to tell the whole truth about his business.
第四局
Thirty years after the famous surgeon general's report declaring cigarette smoking a hea1th hazard,the tobacco executives,it seemed,were among the few who believed otherwise.
第五句
But it was not always that way.