2.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。 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 drugs 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(毀壞)people’s lives.They come back to you when you don’t want to have them in a dream.They usually come with very painful emotions，” said Roger Pitman， a professor of psychiatry at Harvard Medical School。“This could reduce 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(zhì))。 They also help us all avoid the mistakes of the past。 “All of us can think of bad experiences in our lives that were horrible at the time but make us who we are.I’m not sure we want to erase those memories，” said Rebecca Dresser， a medical ethicist。
1.Now American researchers are trying to develop a drug to_______D_____。
A.change people’s bad memories into good ones
B.make people forget what happened in the past
C.help soldiers get away from troubling memories
D.treat people who suffer from terrible memories
The drug that have been tested on people can ____B_____
A.cause the brain to lose memories
B.reduce the effect of bad memories
C.help people improve their memories
D.totally erase the painful memories
Rebecca Dresser thinks that ______C_____
A.some memories can ruin people’s lives
B.the drug can prevent people from sufferings
C.bad memories make us different from others
D.taking the drug will do harm to people’s health
此三題是出自一篇閱讀理解，都為缺少句子成分題型，所以第一步都是在原文定位句型。
第一題：定位答案句型如橫線(xiàn)部分1，那么答案就在這一段，而不在于你的頭腦之中。而且要體現(xiàn)上文提到的解釋作用和特點(diǎn)，不是照抄原文只言片語(yǔ)，比如bad memories， terrible memories， painful memories or experiences 都可以，所以答案在定語(yǔ)從句Which中，為D。
第二題：第一步定位原文2。 略過(guò)第二句，鎖定最后一句的最后部分only the emotional effects of memories may be reduced，應(yīng)為中間都是過(guò)程的解釋?zhuān)覀円氖墙Y(jié)果，答案為B。
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