The key answer of exercise 8
The key to exercise solutions in chapter Revision 7 for the textbook Wider World 4 - Student's Book with authors Suzanne Gaynor, Kathryn Alevizos and Carolyn Barraclough from Pearson Education
Question
Listen. Then listen again and write down what you hear.
Answer
Animals use a lot of non-verbal communication. They communicate using smells, sounds, gestures, head movements and facial expressions. Wolves, for example, use smells to send messages to others. Gorillas show they're angry by lowering their eyebrows. Animals cannot pronounce words, but chimpanzees can learn some sign language.