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当前学科：呼吸内科
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男性，30岁。呼吸困难2天就诊，发病前有鼻痒，喷嚏。继往有类似病史，体检：呼吸20次/分，双肺闻及呼气末哮鸣音，心率96次/分，律齐。最可能的诊断是（）
A . A.心源性哮喘
B . B.上呼吸道感染
C . C.大叶性肺炎
D . D.支气管哮喘
E . E.喘息型支气管炎
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