男性，60岁，慢性咳嗽、咳痰20年，受凉后症状加重伴明显气短1周入院。血气分析示：p
题型：单项选择题 案例分析题
问题：
男性，60岁，慢性咳嗽、咳痰20年，受凉后症状加重伴明显气短1周入院。血气分析示：pH7．30，PaC270mmHg，PaO46mmHg，立即给予持续低流量吸氧
持续低流量氧疗的机制为（）
A.缺氧时组织摄氧量增加
B.缺氧时血红蛋白代偿性增加
C.维持低氧对颈动脉窦、主动脉体的刺激作用
D.缺氧时，心率加快增加氧的运输
E.利用氧解离
题型：单项选择题 案例分析题
There has been a discussion recently on the issue of tradition in a newspaper. Write an essay of 160-200 words based on the following drawing. In your essay, you should
1) describe the drawing briefly,
2) explain its intended meaning, give a specific example, and
3) give your suggestion as to the best way to treat tradition.
You should write neatly on ANSWER SHEET 2.
传统就像一座大山。站得远才可以看清全貌。