6个月男婴，咳嗽、流涕伴发热3d，1天前热退，咳嗽加重，出现喘息，呈阵性发作。体检：面部湿疹，呼吸急促60/min，满肺哮鸣音，余无异常。以往无类似发作，其父患严重支气管哮喘。外周血白细胞5×10⁹/L，N0.50，L0.50胸部X线片呈间质性改变伴肺气肿。

可能的诊断是

A．支气管哮喘

B．毛细支气管炎

C．异物吸入

D．间质性肺炎

E．喘息性支气管炎

Even in winter the roadsides were places of beauty, _______ countless birds came to feed on the berries and on the seed heads of the dried weeds rising above the snow.

A．which

B．when

C．where

D．what