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.
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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.
What common belief about travel has been repeated for a long time?___
A. It is turning many countries into theme parks. B.
B. It will increase continuously in the future. C.
C. It makes people more open to different ideas.
According to the article, how do most tourists relate to the countries they visit?___
A. They are usually disappointed by the reality of what they see. B.
B. They fail to get a true impression of how people there live. C.
C. They find experiences that are different from their normal life.
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