题型:阅读理解 题类:常考题 难易度:普通
山西省平遥中学校2018-2019高二下学期英语期中考试试卷
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.
The U.S. has countless secret swimming holes throughout most states, many of which you've likely never heard of unless you're from the area.
Havasu Falls (Arizona) | This attractive waterfall in the Grand Canyon is undoubtedly a destination spot requiring a 10-mile walk to the falls. You can take a guided tour to the falls, or make it on your own. The Havasu Falls are on the Havasupai Indian Reservation, which means you'll need to get a permit to visit — this has become increasingly difficult as more people discover this hidden place. |
Hamilton Pool (Austin) | Hamilton Pool was created when an underground river's roof fell down suddenly; exposing what is now the swimming hole and creating a 50-foot waterfall that flows over the above limestone(石灰岩). You'll have to reserve beforehand to gain entry to the Hamilton Pool Preserve. |
Chutes and Ladders (Maui) | To get to this secret swimming hole, you'll have to take a rope 40 feet down the face of a cliff, and then climb down about 8 feet of lava rock to the pool. Once there, however, you'll be glad you made the journey. The swimming hole is on the edge of the ocean — a natural pool, you could say — with a depth that invites you to jump in without crowds of people around to watch. |
Homestead Crater (Utah) | The Homestead Crater is hidden under a rock dome(圆顶) with an opening at the top that allows for sunlight and air. It was once only accessible by that top opening, but there is now easy access through a side path for visitors. Go for a swim in this beautiful mineral water spring. |
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