—Why did you come back so early?

—The English Party has been ______ till next Friday. [ ]

A. put on

B. put off

C. put away

D. put out

男性，25岁。突发畏寒、发热、咳嗽伴右胸疼痛2天，胸片见右肺叶有大片密度均匀阴影。入院后给予青霉素治疗，体温逐渐下降，病人一般情况也明显好转。

该病人2天后体温又开始升高，血象白细胞总数升高，应考虑( )

A．抗生素剂量不足

B．机体抵抗力低下

C．病原菌产生耐药性

D．出现并发症

E．休克先兆