71. The passage mainly talks about ____.

1. which metals conduct electricity best
2. where to go in a thunderstorm
3. how to treat someone struck by lightening
4. how to make mouth-to-mouth resuscitation

72. According to the passage, all the following are signs of shock except ____.

1. abnormal fever
2. cold skin
3. irregular breathing
4. rapid pulse

73. It can be guessed from the passage that ____.

1. many campers and hunters are struck by lightening
2. cars are convenient for outdoor activities
3. electric shock does little harm to the human body
4. only professional nurses and doctors are allowed to give first aid

74. The word "salve" in line 1 of the last paragraph most likely means ____.

1. sponge
2. bandage
3. ointment
4. liquid

75. Which of the following must not be done while treating shock?

1. Giving the patient a cup of hot tea.
2. Making the patient lie with the feet lower than the head.
3. Covering the burns with a sterile dressing.
4. Applying artificial respiration.

(Reference keys.)