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【单选题】
患者女，60岁，因“咳嗽、咳痰20年，加重伴呼吸困难、发热1d”来诊。实验室检查：PaO 2 40mmHg，PaCO 2 80mmHg。该患者最可能的诊断是（）A.
肺血栓栓塞症
B.
支气管扩张
C.
肺动脉高压，WHO心功能分级Ⅲ级
D.
慢性阻塞性肺疾病，Ⅰ型呼吸衰竭
E.
慢性阻塞性肺疾病，Ⅱ型呼吸衰竭
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【单选题】You’d better on work time, or the boss may be angry with you. not play not to play to not play
A.
not play
B.
not to play
C.
to not play
【单选题】You must practice ____ the violin everyday and you will play well. [ ]
A.
play
B.
playing
C.
to play
【单选题】It’s necessary _____ the dog’s fur and play with it for _______.
A.
brushing, sometimes
B.
to brush, sometime
C.
brushing, sometimes
D.
to brush, some time
【单选题】You'd better _____ football in the street. [ ]
A.
not to play
B.
not play
C.
don't play
D.
play
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