8．
阅读理解
Most scientists say animals never feel happy
or sad. In fact, they say animals probably don't feel love, anger, hate or
other emotions, either.
Scientist Joseph LeDoux studied mice to find out whether animals
have emotions. He found that mice feel at least one emotion — fear. He also
found the part of the brain that seems to control fear in mice. In humans, that
part of the brain controls fear and some other emotions.
A number of scientists say
animals have emotions. Some scientists who have studied such animals as dogs,
cats, elephants and lions say those animals feel emotions.
Scientist Joyce Poole studies elephants. She
has written that pachyderms often show sadness when a relative dies. She
says elephants have "deep emotions".
Jane Goodall studies chimpanzees (黑猩猩). She says she has seen them playing and running after one another
for fun. Goodall also says they feel sad sometimes. For example, an old
chimpanzee died, and one of her sons, Flint, refused to eat food. Flint's
brothers and sisters tried to get him to eat, but they failed. Three weeks
later, Flint died. Goodall says Flint "died of sadness".
More recently, scientist Marc Bekoff watched
an elk (麋鹿) run back and forth through the snow. Bekoff
said it was feeling the "joy of life". He said he couldn't prove (证明) that animals have feelings, because animals can't talk. But he
said animals can communicate feelings in other ways. "I can't prove that
an animal is feeling happy or sad, but I can guess how he or she is feeling
through body language and facial expressions," he said.
