Paragraph 2
Researchers spent 16 years analyzing
fish bones and teeth. They told
that: "It was like facing a
…until we could make a
about human
." Their biggest problem was to find out whether or not the fish had been eaten
and then their
thrown into the fire, or whether it had been cooked
. They said: "The whole question about
to fire is whether it is about getting rid of
or a desire to cook."
