"Some memories can ruin people's lives. They come back to you when you don't want to have them in a daydream or nightmare. They usually come with very painful emotions," said Roger Pitman, a professor of psychiatry at Harvard Medical School. "This could relieve a lot of that suffering."
But those who are against the research say that changing memories is very dangerous because memories give us our identity (特质). They also help us all avoid the mistakes of the past.
"All of us can think of bad events in our lives that were horrible at the time but make us who we are. I'm not sure we want to wipe those memories out, "said Rebecca Dresser, a medical ethicist.
1. The passage is mainly about
A. an argument about the research on the pill
B. a new medical invention
C. a new research on the pill
D. a way of erasing painful memories
2. The drug tested on people can
A. cause the brain to fix memories
B. prevent body producing certain chemicals
C. stop people remembering bad experiences
D. wipe out the emotional effects of memories
