Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.

A．appliance

B．separate

C．professional

D．potentially E. techniques

F. apply         G. absolutely      H. unplug  I. contact J. external
Government statistics recently revealed that in the UK, more than 3,000 people a year experience electric shocks in their home. A smaller number are electrocuted(触电死亡) after   41   with power lines outside the home. Electric shocks can cause a person’s heart or breathing to stop, can also cause burns and are potentially fatal. It is essential for people to learn basic first aid   42  to deal with such emergencies.
What to do?
If you are the first person to reach someone who has had an electric shock, don’t touch him or her!
If they are still holding the appliance that has given them the shock,   43   it or turn off the power at its source. Under no circumstances should you try to move the   44   with your hand!
If you can’t turn off the power, use a piece of wood, like a broom handle or a chair, to   45   the victim from the appliance or the power source. You may even be able to do this with a folded newspaper.
The victim must remain lying down. If they are unconscious, victims should be placed on their side. But they should not be moved if there is a possibility of neck or spin injuries unless it is   46   necessary.
It is necessary to maintain the victim’s body heat, so make sure you cover him or her with a blanket before you do anything else. If the victim is not breathing,   47   mouth-to-mouth way. Keep the victim’s head low until   48   help arrives.
If the electric shock has been caused by a(n)   49   power line, the dangers to the victim and to anybody providing first aid are much greater.