What prompted John Gorrie to make his machine?___
A. the onset of personal ill-health
B. unreliable access to natural ice
C. the possibility of becoming rich
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Why were the early fridges phased out?___
A. They kept breaking down.
B. They were costly.
C. They were dangerous.
What was the drawback of the new chemicals used?___
A. Their supply was becoming limited.
B. They caused ecological damage.
C. They only had a short shelf-life.
What did Emily Cum m ins want her invention to be?___
A. easy to make
B. safe to use
C. recyclable
In the writer’s opinion, what reaction applies to most tourists?___
A. They are not really changed by their experiences. B.
B. They rarely question their motives for travelling. C.
C. They tend to have negative experiences abroad.
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