问题
单项选择题
男性，30岁。因车祸致股骨骨折和胸部挫伤入院。经外科处理病情趋于稳定，但气急和发绀渐渐加重。PaO2降至6kPa。诊断为急性呼吸窘迫综合征。其低氧血症产生是由于
A．通气不足
B．换气功能障碍
C．氧耗量增加
D．骨折致肺脂肪栓塞，死腔增大
E．胸部挫伤致肺气体交换面积减少
答案
参考答案：B
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男性，30岁。因车祸致股骨骨折和胸部挫伤入院。经外科处理病情趋于稳定，但气急和发绀渐渐加重。PaO2降至6kPa。诊断为急性呼吸窘迫综合征。其低氧血症产生是由于
A．通气不足
B．换气功能障碍
C．氧耗量增加
D．骨折致肺脂肪栓塞，死腔增大
E．胸部挫伤致肺气体交换面积减少
参考答案：B
下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。 增加：在缺词处加一个漏字符号(∧)，并在其下面写上该加的词。 删除：把多余的词用斜线(＼)划掉。 修改：在错的词下划一横线，并在该词下面写上修改后的词。 注意：1．每处错误及其修改均仅限一词； 2．只允许修改l0处，多者(从第ll处起)不计分。
Last weekend we went mountain-climbing. Even the heavy rain in the morning could not prevent us go. Setting off very early, we went along an extreme narrow road, all in high spirits. On every side of the road were green fields and some farm houses. We could hear the sound of the rain and our footsteps mixing with our laughter. At noon we reached the top of the mountain. That surprised us most there was the beauty of the scenes. After having short rest and sharing with the food we had brought, we started going down. It had rained even harder. We were wet to the skin, and we still sang and laughed happily. |