Вопрос теста:Listen to the passage and answer the three related questions.
To access the questions, click on 1, 2 and 3 respectively.
After reading the four choices, click on the response that best answers the question.
The following is an example:
- Language is said to be one of the factors that differentiates humans from animals, but new research shows that animals use language as well. In today’s program, we’ll discover how ethologists are able to teach chimpanzees and gorillas sign language, and how Rhesus monkeys emit different alarm calls to identify predators. You may already know that songbirds alert each other with hundreds of different songs, but did you know that whales may know how to rhyme? Even elephants, giraffes and hippos, animals that were once considered to be virtually silent, communicate with sounds inaudible to the human ear. Join us on this fascinating journey!
According to the speaker, for what reason do Rhesus monkeys produce different calls.
To demonstrate their communication skills.
To warn each other about the presence of potentially dangerous animals.
To signal the start of the mating period.
To differentiate elephants from hippos and giraffes.
Внимание!
Верный ответ отмечен зелёным цветом.
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