If you see someone drowning, speed is very important. Once you get him out of the water, i

If you see someone drowning, speed is very important. Once you get him out of the water, if he isn't breathing, you have four minutes before his brain is completely destroyed. Support his neck, move his head back and press his chin upwards. This stops the tongue blocking the airway in the throat and is sometimes enough to get him breathing again. If that doesn't work, start mouth-to-mouth breathing. Press his nostrils (the two holes at the end of your nose, through which you breathe and smell things) together with your fingers. Open your mouth and take a deep breath. Blow into his lungs until his chest rises, then remove your mouth and watch his chest fall. Repeat twelve times a minute. Keep doing until professional help arrives.
To bring a child back to life, keep your lips around his mouth and gently blow into his mouth. Give the first four breaths as quickly as possible to fill the blood with oxygen. If, in spite of your efforts, he starts turning a blue-grey colour, and you can feel no pulse(脉搏), then pressing is the last chance of saving his life.
With arms straight, rock forwards, pressing down on the lower half of the breastbone. Don't be too hard or you may break a rib. Check how effective you are by seeing if his colour improves or his pulse becomes independent to your chest pressing. If this happens, stop the pressing. Otherwise continue until rescue arrives.
【小题1】If you want to save someone drowning, you . A．have to pull off his clothes first . B．should try to get him out of water as quickly as possible. C．should first make out who he is. D．ought to throw a life coat to him first .【小题2】Once a person stops breathing, it means . A．you have no more than 4 minutes to bring him to life again . B．his brain is completely damaged . C．he has passed away. D．there is no way to save his life .【小题3】To press his chin upwards is a way to . A．keep the tongue from blocking the airway in the throat . B．prevent the tongue from stopping the airway in the throat . C．wipe the tongue out of the throat . D．see if he can possibly be saved .【小题4】If the drowning boy has no pulse, . A．press his chin upwards is enough to get him breathing . B．blow air into his mouth is sure to save his life . C．press his nostrils together with your fingers can work . D．press is the last chance of saving his life .【小题5】Which of the following statement is true? A．Don’t stop pressing his chest, if the drowning man starts breathing again. B．If you see someone drowning, you must give him mouth-to-mouth breathing. C．If a man does not breathe for four minutes, his brain will be completely destroyed. D．When pressing, you can do it as hard as you can.B

(答案→)B 解析：本文讲述了救落水的人的方法和一些细节，如人工呼吸的时候的注意事项等。【小题1】B 推理题。根据文章第一句If you see someone drowning, speed is very important.说明救落水的人，速度是非常重要的，如果延误了，会失去生命的，故B正确。【小题2】A 细节题。根据第一段第2行if he isn't breathing, you have four minutes before his brain is completely destroyed说明你只有4分钟的时间来救他。【小题3】A 细节题。根据第一段的4,5行This stops the tongue blocking the airway in the throat and is sometimes enough to get him breathing again.说明你这样做是为了不让他的舌头堵住空气进出的通道。故A正确。【小题4】D 细节题。根据第二段最后一句话then pressing is the last chance of saving his life. 说明D正确。【小题5】C 推理题。根据第一段第2行if he isn't breathing, you have four minutes before his brain is completely destroyed说明如果一个人不呼吸4分钟，他的脑就会死亡了，故C项正确。

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