The new computers _____ very well, and they _________ in many countries.

A．sell; are sold

B．are sold; sell

C．sell; sell

D．are sold; are sold

某刺激性咳嗽3个月患者，伴痰中带血，经对症治疗后无效。X线示：右上肺叶部分不张，纤维支气管镜检查见：右肺上叶支气管开口处有菜花样肿物，质脆，易出血。病理尚未回报。应首先考虑的诊断是( )

A．肺脓肿
B．肺门淋巴结结核
C．肺良性肿瘤
D．支气管肺癌
E．结核球