Doctors in hospital emergency rooms（急診室） often see accidental poisonings（中毒）.A frightened parent arrives with a child who swallowed a cleaning liquid.Or perhaps the harmful substance is a medicine.Or it might be a product meant to kill insects.These are common causes of accidental poisonings.
   In cases like these，seek medical help as soon as possible.Save the container of whatever caused the poisoning.And look on the container for information about anything that stops the effects of the poison.Save anything expelled from the mouth of the victim.That way，doctors can examine it.
   Millions of people know how to give abdominal thrusts（腹部按壓） to save a person choking on something trapped in the throat.The American Red Cross says a rescuer should first hit the person on the back five times between the shoulder bones.If the airway is still blocked，the Red Cross suggests pushing hard five times along the victim's abdomen.You can do these abdominal thrusts by getting directly behind a sitting or standing person.
   The Mayo Clinic health centres suggest several steps if bleeding is severe.First，if possible，remove dirt from the wound and press on it with a clean cloth or piece of clothing.In the past，people were advised to stop severe bleeding with a tourniquet（止血帶）.But experts now say tourniquets are dangerous because they can crush（擠壓） major arteries and nerves.If a wound seems infected，let the victim rest.Physical activity can spread the infection.Treat the wound with a mixture of salt and water until medical help arrives.
   To learn more about first aid，ask a hospital or an organisation like a Red Cross or a Red Crescent Society for information.Training may be offered in your area.

（1）Which of the following is NOT the cause of accidental poisonings？

D

D

A．A harmful medicine.
B．A cleaning liquid.
C．Dangerous pesticide.
D．Poisonous insects.
（2）What does the underlined word "expelled" in paragraph 2 probably mean？

A

A

A．Coming out.
B．Taking up.
C．Going away.
D．Getting down.
（3）Where can you learn more about first aid？

A

A

A．A hospital or Red Cross.
B．A hospital or magazine.
C．A Red Cross or patient.
D．A Red Crescent Society or book.