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(脈搏), 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.
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 .
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 .
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 .
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 .
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.
1.B
2.A
3.A
4.D
5.C
【解析】
試題分析：本文講述了救落水的人的方法和一些細(xì)節(jié)，如人工呼吸的時候的注意事項等。
1.B 推理題。根據(jù)文章第一句If you see someone drowning, speed is very important.說明救落水的人，速度是非常重要的，如果延誤了，會失去生命的，故B正確。
2.A 細(xì)節(jié)題。根據(jù)第一段第2行if he isn't breathing, you have four minutes before his brain is completely destroyed說明你只有4分鐘的時間來救他。
3.A 細(xì)節(jié)題。根據(jù)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.說明你這樣做是為了不讓他的舌頭堵住空氣進(jìn)出的通道。故A正確。
4.D 細(xì)節(jié)題。根據(jù)第二段最后一句話then pressing is the last chance of saving his life.
說明D正確。
5.C 推理題。根據(jù)第一段第2行if he isn't breathing, you have four minutes before his brain is completely destroyed說明如果一個人不呼吸4分鐘，他的腦就會死亡了，故C項正確。
考點：考查科普類短文閱讀
點評：本文講述了救落水的人的方法和一些細(xì)節(jié)，如人工呼吸的時候的注意事項等。本文以細(xì)節(jié)題的考查為主，在解答這類問題時要求學(xué)生抓住題干文字信息，采用針對性方法進(jìn)行閱讀，因為這類題的答案在文章中可以直接找到。?
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