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(噩梦).
Now American researchers think they are close to developing a pill,which will help people forget had 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 in 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 from 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 it is very dangerous to change memories 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. a new medical invention
B. a new research on memories
C. a way of erasing painful memories
D. an argument about the research on the pill
2. The drug tested on people can .
A. cause the brain to fix memories
B. stop people remembering their experience
C. prevent body producing certain chemicals
D. wipe out 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 ruin people’s lives.
B. People want to get rid of bad memories.
C.Experiencing bad events makes us different from others.
D. The pill will reduce people’s sufferings from had memories
5.The word "scars"in Paragraph One is close in meaning to .
A.good stones B.pains C.experiences D .memories
参考答案及解析：
1.【答案】D
【精析】主旨大意题。由第四段“The research has caused a great deal of argument. Some think. . . while others. . .”以及分别位于第五段开头和倒数第二段开头的“Supporters...”" But those who are against the research...”可知，本文是关于这项研究的争论的，故选项D为正确答案。
2.【答案】C
【精析]事实细节题。由第三段第二句“The drug stops. . .”可知正确选项为C。
3.【答案】D
【精析】推理判断题。由第二段开头一句“Now American researchers. . .”可推知正确答案为D。
4.【答案】C
【精析】推理判断题。由最后一段Rebecca Dresser的话中一句“.. . bad events. . . make us who we are.”可知Rebecca认为不好的经历可以让人们持有自己的特点，故C正确。
5.【答案】B
【精析】词义猜测题。此题考查" scar”与其他四个选项的词义的同时要求对句子理解正确，scar是伤疤的意思，第一段第二句的意思是暴力和交通事故能给人留下身体上的伤疤和精神上的创伤，故B项(痛苦)与“scar"意义最为接近。
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