问题
单项选择题
男，25岁，背部刀伤，伤口流血2小时，体查：神志尚清楚，诉口渴，皮肤苍白，稍冷，脉搏110次/分，血压12/9.33kPa(90/70mmHg)，脉压差小，表浅静脉塌陷，尿少。
此病人失血量约占全身血容量
A．20%
B．＜20%
C．20%～40%
D．40%左右
答案
参考答案：C
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男，25岁，背部刀伤，伤口流血2小时，体查：神志尚清楚，诉口渴，皮肤苍白，稍冷，脉搏110次/分，血压12/9.33kPa(90/70mmHg)，脉压差小，表浅静脉塌陷，尿少。
此病人失血量约占全身血容量
A．20%
B．＜20%
C．20%～40%
D．40%左右
参考答案：C
In Britain, people have different attitudes to the police. Most people generally ____them and the job they do，although there are certain people who do not believe that the police____have the power that they do. What does a policeman actually do? It is not ____job to describe. After all, a policeman has a number of jobs in ____.A policeman often has to control traffic, either____ foot in the centre of a town, or in a police car on the roads. Indeed, in Britain, he might be in the Traffic Police and spend all, or a lot of, his time ____up and down main roads and motorways. A traffic policeman has to help keep the traffic moving, stop ____motorists and help when there is an accident. A policeman has to help keep the ___， too. If there is a fight or some other disturbance, we ___ the police to come and restore order. And they often have to ____ situation at great risk to their own ____.We expect the police to solve crimes, of course, so an ordinary policeman, ____ he is not a detective(侦探)，will often have to help___and arrest criminals. And ___ do we call when there is an emergency—an air crash, a____，a road accident, or a robbery? We call the police.___a policeman has to be ____to face any unpleasant emergency that may happen in the ___ world. The police do an absolutely necessary job, they do it ____ well and I support them, but I do not envy policemen. I do not think that I could____do the job of a policeman.
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