고1 6월 모의고사 34번 변형문제인데요

some scientists believe that certain animals use a type of language. for example, vervet monkeys have different sounds for different predators. when an alarm call is given, the monkeys know what predators― eagles, leopards or snakes ― are approaching. however, the monkeys aren’t born knowing the meaning of each of these sounds. young monkeys learn the meaning of the sounds from listening to and watching older monkeys. this learning takes some time. after young monkeys learn the alarm call for seeing an eagle, they use it whenever they see a large bird, even if the bird is harmless. only after much trial and error do they realize that the eagle call must be used only for eagles

- 이 지문 주제가
1 vervet monkey : the genius of imitation
2 tervet monkey that learned a type of language
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