题目内容

患者男性,60岁。刺激性呛咳,咳痰,且带少量血丝。确诊为支气管肺癌。可以肯定其发病与下列哪一因素无关

A. 饮食
B. 长期吸烟
C. 经常接触过敏物质
D. 空气污染
E. 慢性肺疾患

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