You will hear part of a radio discussion about the intelligence of great apes. Listen to the audio and complete the sentences with a word or short phrase.
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At first, Paula the chimpanzee looked as if she was going to 1 the mirror.
Paula’s use of the mirror to examine her 2 was proof that she understood what it was.
Ray describes the apes he works with as both 3 and intelligent.
Ray explains how one chimpanzee used both food and 4 to win friends.
Ray says that from a human perspective, it’s possible to put a 5 interpretation on Tammy’s behaviour.
Ray gives the example of the dropped 6 to show that gorillas possess bargaining skills.
Annabel describes the apes which take part in experiments as 7 for their species.
Ray questions the validity of experiments which involve giving 8 to apes.