题目内容

病人女性，25岁。因春游赏花，出现咳嗽、咳痰伴喘息，呼气性呼吸困难。查体：喘息貌，口唇发绀，在肺部可闻及广泛哮鸣音。医生诊断为"支气管哮喘"。病人发病最可能的诱因是（）

A. 花粉
B. 尘螨
C. 动物毛屑
D. 病毒感染
E. 精神因素

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