题目内容

When he was in the army, he _____ a uniform every day.

A. wears
B. wore
C. was wearing
D. worn

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She normally _ to work by bus, but yesterday she _ a taxi.

A. goes; took
B. go; took
C. went; has taken
D. went; took

【单选题】慢性支气管炎最常见的并发症为()

A. 急性肺部感染
B. 呼吸衰竭
C. 阻塞性肺气肿
D. 自发性气胸
E. 肺源性心脏病

【单选题】慢性支气管炎最突出的症状是()

A. 长期反复咳嗽
B. 间歇少量咯血
C. 逐渐加重的呼吸困难
D. 活动后心悸、气急
E. 反复咯血

【单选题】慢性支气管炎发生和加重的最主要原因是()

A. 职业粉尘吸入
B. 遗传
C. 感染
D. 吸烟
E. 大气污染