问题
单项选择题 B型题
呼气末正压最常见于（）
A.严重CO中毒，昏迷
B.肺结核
C.急性呼吸窘迫综合征
D.COPD急性加重期，Ⅱ型呼吸衰竭
E.支气管扩张
答案
参考答案：C
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呼气末正压最常见于（）
A.严重CO中毒，昏迷
B.肺结核
C.急性呼吸窘迫综合征
D.COPD急性加重期，Ⅱ型呼吸衰竭
E.支气管扩张
参考答案：C
| 选词并用其正确的形式填空 | |
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| 1. He worked as a teacher____ 2. ____we couldn't eat enough food, but now it has changed. 3. There are a lot of books falling on the floor;____ them____ please. 4. The life of us has become much easier. ____,we feel more tired than before. 5. He____when he was only 14 years old. |