题目内容
() 17. (2013 西宁) He was studying for the examination , , an earthquake hit his hometown — Ya’an on April 20.
A. or B. so C. unless (除非) D. however
17.D
练习册系列答案
阅读快车系列答案
相关题目
阅读快车系列答案题目内容
() 17. (2013 西宁) He was studying for the examination , , an earthquake hit his hometown — Ya’an on April 20.
A. or B. so C. unless (除非) D. however
阅读快车系列答案
Once a week a nurse visits Tom ’ s school and teaches the students how to help people who suddenly become ill or who have had an accident. Last week,the nurse talked to the students about how to stop bleeding. This is part of what she said ,“When we cut ourselves,we usually bleed. This is because our bodies are full of blood vessels ? which carry blood to and from the heart. It doesn ’t matter if we lose a little blood from time to time. In fact,many people donate blood to hospitals. We can give at least a pint of blood without harming ourselves. We mustn ’ t lose too much blood,however ? so we need to know how to stop bleeding when it occurs. If the injury is small and the amount of blood coming from it is also small,we can usually stop the blood from flowing by pressing on the cut with a clean,cold,wet cloth that has a little sntiseptic on it. It is most important to use antiseptic. If you do not,then dirt and bacteria may get into the wound and cause an infection. If the injury is large and the amount of blood coming from it is also large ? then it is necessary to stop the blood flowing through the blood vessel. We do this by putting pressure on the vessel above the injury. We can either press on it with our fingers or put on a tourniquet,which is a piece of cloth tied tightly around the arm ? leg ? or finger.