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NOT all memories are sweet. Some people -- all their lives trying to forget bad experiences. Violence and traffic accidents can leave people with terrible physical and emotional scars (傷痕).
Now American researchers think they are close to developing a pill, which will help people forget bad memories. The pill is designed to be taken immediately after a frightening experience. They hope it might reduce, or possibly erase, the effect of painful memories.
In November, experts tested a drug on people in the US and France. The drug stops the body producing chemicals that fix memories in the brain (大腦). So far the research has suggested that only the emotional effects of memories may be reduced, not that the memories are erased.
The research has caused a great deal of discussion. Some think it is a bad idea, while others support it.
Supporters say it could lead to pills that prevent or treat soldiers' troubling memories after war. They say that there are many people who suffer from terrible memories.
"Some memories can destroy people's lives. They come back to you when you don't want to have them in a daydream or nightmare (噩夢). 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 (特質). 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.
【小題1】The passage is mainly about          

A Lesson from the Elder

Grandfather was an elder Cherokee Native American who had a wrinkled, nut brown face and kind dark eyes. His grandson often came in the evening to sit on his knee and asked the many questions that children would ask.

One day the grandson came to his grandfather with a look of anger on his face and the following story. “Father and I went to the store today and because I helped him, he bought me a present---a jack-knife. I went outside to wait for father and to admire my new knife in the sunlight. Some town boys came by and saw me. They surrounded me and started saying bad things. They called me dirty and stupid and said that I should not have such a fine knife. The largest of these boys pushed me back and I fell over one of the other boys. I dropped my knife and one of them picked it up and they all ran away laughing. I hate them. I hate them all."

The elder Cherokee, with eyes that had seen too much, lifted his grandson's face so his eyes looked into the boy's face. Grandfather said, "Let me tell you a story. I, too, at times, have felt a great hate for those who have taken so much with no sorrow for what they do. But hate wears you down and does not hurt your enemy. It is like drinking poison and wishing your enemy would die. I have struggled with these feelings many times. It is as if two wolves are inside me.... It is a terrible fight.

One wolf is good and does no harm. He lives in harmony with all around him and does not take offense when no offense was intended. It will only fight when it is right to do so and in the right way. This wolf stands for joy, peace, love, hope, sharing, modesty, kindness, friendship, sympathy, generosity, truth, and faith.

The other wolf is full of anger. The least thing will set off his fiercest temper. He fights everyone, all the time, for no reason. He cannot think because his anger and hate are so much. It is helpless anger, for his anger will change nothing. This wolf represents fear, envy, greed, self-pity, guilt, lies, false pride and superiority.

Sometimes, it is hard to live with these two wolves inside me for both of them try to control my spirit. This same fight is going on inside you and inside every other person too.”

The boy looked into his grandfather's eyes and asked, "Which wolf will win?" The old Cherokee simply replied.... "The one you feed."

1.The boy was angry because __________.

A. he was not satisfied with his present

his back was badly injured in a fight

he had waited for his father for too long

his jack-knife had been taken away by some boys

2.How does the good wolf do things in the story?

A. He never fights against others.

B. He tries to get on well with others.

C. It is hard for him to live with other wolves.

D. Sometimes he had a terrible fight because some one hit him.

3.We can learn from the third paragraph that _________.

A.  “hate” is healthy

B.  “hate” hurts oneself

C.  “hate” is complicated

D.  “hate” harms one’s enemies

4.What did Grandfather mean by saying "The one you feed" in the last paragraph?

A. We should feed the two wolves equally.

B. Living in harmony with others is important.

C. Our feelings should be expressed at the right time.

D. The choices we make determine who we will become.

NOT all memories are sweet. Some people -- all their lives trying to forget bad experiences. Violence and traffic accidents can leave people with terrible physical and emotional scars (傷痕).

Now American researchers think they are close to developing a pill, which will help people forget bad memories. The pill is designed to be taken immediately after a frightening experience. They hope it might reduce, or possibly erase, the effect of painful memories.

In November, experts tested a drug on people in the US and France. The drug stops the body producing chemicals that fix memories in the brain (大腦). So far the research has suggested that only the emotional effects of memories may be reduced, not that the memories are erased.

The research has caused a great deal of discussion. Some think it is a bad idea, while others support it.

Supporters say it could lead to pills that prevent or treat soldiers' troubling memories after war. They say that there are many people who suffer from terrible memories.

"Some memories can destroy people's lives. They come back to you when you don't want to have them in a daydream or nightmare (噩夢). 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 (特質). 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．a new medical invention

B．a new research on the pill

C．a way of erasing painful memories

D．a discussion about the research on the pill

2.The drug tested on people can           

A．cause the brain to fix memories

B．stop people remembering bad experiences

C．prevent body producing certain chemicals

D．erase the emotional effects of memories

3.We can infer from the passage that            

A．people doubt the effects of the pills

B．the pill will stop people's bad experiences

C．taking the pill will do harm to people's health

D．the pill has probably been produced in America

4.Which of the following does Rebecca Dresser agree with?

A．Some memories can destroy people's lives.

B．People want to remove bad memories.

C．Experiencing bad events makes us different from others.

D．The pill will reduce people's sufferings from bad memories.