2岁男孩，因"反复咳嗽喘息6个月"入院。患儿间断出现咳嗽喘息，夜间重，有时低热。体格检查：双肺可闻及哮鸣音和粗细湿啰音，外周血WBC7×10/L，N0.48，L0.52。
该患儿最可能的诊断是（）。
A.毛细支气管炎
B.支气管异物
C.先天性气道发育异常
D.婴儿哮喘
E.慢性支气管炎
F.肺结核提示：血沉60mm／h。）
参考答案：D, F
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