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问题 单项选择题

根据血红蛋白氧解离曲线的形态特点，血红蛋白氧解离曲线处于陡直段时，PaO2低于：（）

A．90 mmHg

B．80 mmHg

C．60 mmHg

D．50 mmHg

答案

参考答案：C

听力题

A. 根据首字母提示和汉语提示写出单词。（10分）

Mr Smith usually gets up late on the w     小题1:    . After he gets d    小题2:   ,

he e   小题3:    for an hour. He thinks it’s very     小题4:      （重要的）to do sports. Then he has breakfast      小题5:     (迅速地). He likes talking with other p   小题6:     , so he often goes to the park to talk with his friends in the afternoon. But sometimes he has to go to the hospital, because he has some bad    小题7:   （牙齿）in his mouth. It’s t   小题8:   (非常讨厌的)!  Mr Smith likes singing, too. He wants to be a     小题9:  （音乐家）. He hopes his dream can come t  小题10: one day.
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单项选择题

导致褥疮的主要原因是

A．局部长期受压
B．长期低热
C．皮肤经常受潮湿刺激
D．营养不良
E．排泄物刺激
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