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NOT all memories are sweet. Some people spend all their lives trying to forget bad experiences. Violence and traffic accidents can leave people with terrible physical and emotional scars. Often they relive these experiences in nightmares.
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(抹去) the effect of painful memories.
In November, experts tested a drug on people in the US and France. The drug stops the body releasing chemicals that fix memories in the brain. 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 argument. 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 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.
【小题1】The passage is mainly about ________.

A.a new medical research
B.a new invention of the pill
C.an argument about the research on the pill
D.a way of erasing painful memories
【小题2】The drug tested on people can ________.
A.prevent body producing certain chemicals
B.cause the brain itself to recover memories
C.help people remember the memories
D.wipe out the emotional effects of memories
【小题3】We can infer from the passage that ________.
A.the pill will prevent people's bad experiences
B.people argue about the effects of the pills
C.taking the pill will do harm to people's health
D.the pill has probably been produced in America
【小题4】Which of the following does Rebecca Dresser agree with?
A.Some memories can help avoid the mistakes made in the past.
B.Changing memories is very dangerous.
C.Experiencing bad events makes us different from others.
D.The pill will reduce people's sufferings from bad memories.


【小题1】C
【小题2】A
【小题3】B
【小题4】C

解析试题分析:不是所有的记忆都是甜蜜的。一些人花费一生的时间努力忘记不好的经历。暴力和交通事故能给人们留下可怕的身体和情感的伤疤。他们经常会在噩梦中重温这些经历。
【小题1】根据第一段和第二段第一句“Now American researchers think they are close to developing a pill, which will help people forget bad memories.”和“Supporters say..., But those who are against...”可知,文章主要论述了关于一种药物的争论。故选C。
【小题2】根据第三段“The drug stops the body releasing chemicals that fix memories in the brain.”可知,这种药物阻止身体释放固定记忆的化学物质。故选A。
【小题3】根据第四段“The research has caused a great deal of argument. Some think it is a bad idea, while others support it.”可知,这个研究引起了许多的争议。故选B。
【小题4】根据最后一段的“All of us can think of bad events in our lives that were horrible at the time but make us who we are.”可知,每个人都会想起可怕的经历,正是这些不好的事情成就了我们每一个人。C项“经历不好的事件使我们与众不同”符合题意。故选C。
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