男，72岁，确诊为慢性阻塞性肺疾病(COPD)25年，加重10天人院。人院时神清，血气分析：Pa0240mmHg，PaCO275mmHg。吸人40%浓度的氧后，患者出现呼之不应，查动脉血气分析示：PaO285mmHg，PaCO2100mmHg。患者出现意识障碍的原因是
A．脑血管意外
B．心衰脑缺血
C．呼吸中枢受到抑制
D．感染加重
E．气道阻力增加
参考答案：C
选出适当的短语，并用其正确形式填空。
1. His bad habit of drinking and smoking all day _______ his illness. 2. The party wanted to ________ the support it had lost. 3. You shouldn't ___________us like that. You deserved the scolding. 4. The father _______ his four children by working as an accountant in those hard years. 5. Politeness will never be___________, for people with good manners will leave a good impression on others. 6. If people don't stop ______trees in the rainforest, many wild animals will have no place to live in. 7. The poet wrote a poem ______ the national hero, who lost his life for his country. 8. They_____________ on a journey round the Europe since last month. 9. The child should be punished. You shouldn't have him ________ telling lies. 10. The tourists _______ when they saw such a splendid building. |