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 bad memories. The pill is designed to be taken immediately after a frightening experience. They hope it might reduce, or possibly wipe out, the effect of painful memories.
In November, experts tested a drug on people in the US and France. The drug stops the body releasing (释放) 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 wiped out. They are not sure to what degree people’s memories are affected.
The research has caused a great deal of argument（争议）. 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 maybe the pills can change people’s memories and 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 terrible 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 passage is mainly about .
| A．a new medical invention | B．a new research on the pill |
| C．a way of wiping out painful memories | D．an argument about the research on the pill |
The drug tested on people can .
| A．cause the brain to fix memories | B．stop people remembering bad experiences |
| C．stop body producing certain chemicals | D．wipe out the emotional effects of memories |
We can infer from the passage that .
| A．people doubt the effects of the pills |
| B．the pill will certainly stop people's emotional memories |
| C．taking the pill will do harm to people's physical health |
| D．the pill has already been produced and used by the public in America |
Which of the following does Rebecca Dresser agree with in the last paragraph ?
| 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 bad memories. |
You may probably read the passage in a __________
| A．guidebook | B．medical magazine | C．textbook | D．science fiction |
I am an English dictionary. I can still remember the day my ex-owner bought me. He had stood in front of the shelf for around half an hour before finally picking me. Originally, he chose my neighbor. But because she had some ink on the cover, he put her down and chose me instead.
I may sound arrogant (傲慢的) . But please forgive me. I am so proud of my vocabulary. With 100,000 entries and 300,000 examples, I think no scholar can be more knowledgeable than me. My only weakness is that I can’t speak. But that is not my fault. I was not designed to speak in the first place. My ex-owner was supposed to read the phonetic symbols (音标) clearly printed beside each word, which were also my selling point. I should have been respected but have ended up lying next to a piece of used toilet paper inside the rubbish bin.
It is all because of the electronic dictionary. He is the bad guy because he takes advantage of my one weakness. And I just don’t understand why he can be so slim. He also has about 100,000entries but 450,000 examples! But I know this was not the reason why my ex-owner was attracted, for he was not a very diligent (勤奋的) student and seldom read the examples listed. The main reason was that the bad guy had so many games in him. My ex-owner always pretended to be working hard while actually he was playing games.
My ex-owner put me on his bookshelf because of my awesome English name “Advanced English Dictionary”. He wanted people to think that he was an advanced learner. I wanted to tell him that it would be better if he hid the comic books standing next to me. But, you know, I can’t speak. I stood there for years. I was so bored. So I talked to the comic book next to me. Under normal circumstances, I wouldn’t have talked to him because I was educated and he was not. But who else could I choose? He told me that my ex-owner had read him once only and then put him there. I was upset because he had never read me from page one to page 1,000. Was I not a better book than the comic book? I wanted to challenge his honesty but before I did so, he was thrown away.
I give up. My pages are absorbing waste water. There is no way people will use me again. Suddenly, I want to talk to the comic book. Would he talk to me if we met?Why does the dictionary think that the electronic dictionary is the “bad guy”?
| A．I t contains more words and examples. |
| B．It can actually pronounce the words. |
| C．It has a smaller size. |
| D．It has many games. |
The dictionary thinks that its ex-owner put it on the bookshelf because he ______.
| A．thought that it could match the comic books |
| B．wanted his friends to study English |
| C．just wanted to show off |
| D．had to use it sometimes |
What was the dictionary’s attitude toward the comic book standing next to it?
| A．It wanted to make friends with him. |
| B．It respected him. |
| C．It envied him. |
| D．It hated him. |
Which of the following is the best title for the text?
| A．A Dictionary Is Replaced with an Electronic One |
| B．Students Seldom Use Dictionaries |
| C．A Dictionary and a Comic Book |
| D．The Experience of a Dictionary |
Taj Mahal, Agra, India
As many as 28 different varieties of precious stones were used to decorate the outside of the Taj Mahal. Construction took around 20 years. The building, which was made from white marble from the quarries(采石场) of Rajasthan, appears pink in the morning, white in the day and golden in the moonlight.
Akashi Kaikyo Bridge, Akashi Strait, Japan
It took 10 years to construct the Akashi Kaikyo Bridge. It connects the city of Kobe, on Japan’s mainland, with Iwaya on Awaji Island. Before it opened, the only way to get between the two cities was by ferry. However, the waterway was at the mercy of severe storms and when two ferries overturned in 1955, killing 168 people, public anger convinced the government of the need for a bridge. It's the longest suspension bridge in the world, with a length of 1,991 meters.
Panama Canal, Panama
More than 4. 5 million cubic yards of concrete were used in the construction of this canal’s locks and dams. The Panama Canal is a 47-mile long waterway that connects the Atlantic and Pacific Oceans. The earth and rubble dug to make way for it was enough to bury Manhattan to a depth of four meters. A series of locks allows ships to pass through the water. Each lock door weighs 750 tons and each lock fills with 52 million gallons of water to accommodate the 15,000 ships that use the canal every year.
Grand Canyon Skywalk, Arizona
The Skywalk’s foundation is strong enough to support 71 million pounds , Located 1,219 meters above the Colorado River, the Grand Canyon's Sky Walk consists of one million pounds of steel and 83,000 pounds of glass. It was the creation of Las Vegas businessman David Jin, who approached the Hualapai Tribe with the idea of a glass walkway over the Grand Canyon in 1996. The Sky walk was assembled on site.The Japanese government decided to build the Akashi Kaikyo Bridge ___________
| A．in the year of 1955 |
| B．following public opinion |
| C．to show its national power |
| D．to develop Japan’s economy |
The Grand Canyon Skywalk is probably a real challenge for those who __________
| A．are airsick |
| B．hate rock climbing |
| C．have a fear of height |
| D．feel ill traveling in boat |
In which section of a book can the text probably be seen?
| A．Science | B．Agriculture | C．Technology | D．Geography |
Has this happened to you? You’re about to drift off to sleep when suddenly you feel like you’re falling or coming down on a roller coaster.
You then wake up to realize that you’re safe in your bed. You may have been confused or frightened for a second or two and your heart may be beating faster. You may have also felt the muscles in your body jerk(抽搐) when this all happened. Did you ever wonder why?
This falling sensation, together with a body movement known as a “sleep start”, is what doctors and scientists call a myoclonic(肌阵挛的)jerk, and it usually happens right before going into deeper stages of sleep. Here’s why doctors think the falling feeling and myoclonic jerks happen. When you fall asleep, normally your body temperature goes down and your heart start to beat just a little slower. This is because your brain signals your body to relax to prepare for sleep. When your muscles are relaxed, you go into the very first stages of sleep, but you’re not sleeping too deeply yet.
This brain activity may cause your larger muscles to contract(收缩) a little bit. In response, another part of your brain will make up a very quick mini-dream to go along with what is happening. You might think this would take a while, but your brain works so fast that it makes up the story almost at the same instant that your muscles jerk.
During this light sleep, you can be awakened easily. People who wake up during this light sleep believe they haven’t fallen asleep yet. That’s why you may think that your body jerked right before you were about to fall asleep.
Myoclonic jerk are a normal part of sleep. Most people have them at one time or another. But many people don’t realize their muscles are jerking during night sleep if it doesn’t wake them up.
So the next time you dream about falling and wake up in a sweat, don’t worry! Your body is just telling your muscles to relax and get some rest!People sometimes wake up during a light sleep because______.
| A．they are disturbed by others. |
| B．they are too tired to fall asleep. |
| C．their bodies are preparing for sleep. |
| D．they believe their lives are in danger. |
What does the underlined part “ what is happening” in Paragraph 4 refer to?
| A．The body jerk | B．The mini- dream |
| C．The slow heartbeat | D．The falling body temperature |
The author thinks myoclonic jerks during sleep are _____.
| A．worrying | B．usual | C．abnormal | D．useful |
It can be inferred that myoclonic jerks ________.
A. lead to muscle disease
B. happen in a deep sleep
B. are related to brain disease
D. don’t always wake people up
Picture the scene: You come home after work feeling too exhausted to cook –only to find a delicious meal worthy of a Michelin-starred restaurant waiting for you. It sounds like a fantasy, but it could be about to come true thanks to a robot chef developed by British scientists.
Those scientists have come up with a set of robotic arms so smart that they are capable of cooking meals all by themselves. The device will be sold from as early as 2017 as part of a purpose-built high-tech kitchen.
Scientists at Moley Robotics spent almost 18 years developing the hands. According to its creators, the arms can chop, stir, whisk and baste well enough to recreate almost anything you would care to eat, whether it is a simple home-cooked supper, or a complicated creation designed by a world-class chef. The hands move a little slowly, hovering strangely above the work surface whenever they are not busy, but they imitate human movements closely enough that they can do things such as wiping a spoon on the edge of a pan to prevent drips.
Mr Oleynik, who is leading the project, said, “All the things which are possible with the hand are possible here. There is no limitation. A lot of people want to go to Michelin-starred restaurants, but they are quite expensive and may be quite far from the home. This is an opportunity for people to enjoy very good food, and for a reasonable price. ”
The only cuisine that is off the robot’s menu at the moment is sushi, which requires extremely steady pressure and nimble fingers to make, but the team plan to conquer that as well by the time it goes on sale.People go to Michelin-starred restaurants in order to______.
| A．appreciate car tires. | B．enjoy delicious meals |
| C．see the new robot chefs | D．escape from work |
What does the underlined word “they” in Paragraph 2 refer to?
| A．British scientists | B．The robot chef’s arms |
| C．Cooks at restaurants | D．Household wives |
Which kind of food CAN’T the robot chef cook at present?
| A．Bread | B．Beef | C．Sushi | D．Sandwich |
What can we infer from the passage?
| A．Hands of a robot chef can perform exactly like a cook. |
| B．Robot chefs are available at shopping malls. |
| C．Michelin-starred restaurants are suitable for many people. |
| D．It is uncertain when the robot can cook all kinds of food. |
The pounding（重击声）was driving Edward crazy. A new neighbor had just moved into the apartment below him. The newcomer was deaf, or seemed to be, because he played his stereoloud enough for the whole building to hear.
On the first day he heard the stereo rocking over, Edward marched downstairs and politely told the newcomer that his stereo was too loud. He asked the new tenant to turn the volume down and keep it down as long as he lived in the building. The tenant appeared surprised and embarrassed, and said, “Oh, I’m sorry. I didn’t realize it was that loud.”
So, Edward returned upstairs, feeling good, because he had taken a stand and politely let the newcomer know that loud music was not going to be tolerated. The next day all was quiet, and Edward continued to be pleased with himself. The following day, Edward thought it must be Fourth of July, because a marching band was playing on his street. In fact, it was the new neighbor who was playing his music loud again.
Edward was not one to repeat himself, feeling that each time you repeated yourself, you diminished the value of your words. So, he did what he always did with rude neighbors－grinand bear it. Eventually, they would move away. What else are you going to do?
In Los Angles a year ago, a woman had complained to her upstairs neighbor that he was playing his drums too loud and too often. The drummer repeatedly ignored her. One day the woman walked upstairs and shot the drummer in the head and his girlfriend in the chest. The woman was sentenced to prison for 20 years.
The dead drummer won’t bother anyone with his drums, but the woman might be wishing now that she had learned to grin and bear it. If she were still living in her apartment, she could always move. When you’re in prison, you don’t have that option.The man living below where Edward lived was .
| A．a deaf man | B．the owner of the house |
| C．a tenant | D．an old neighbor |
What did Edward always do with rude neighbors?
| A．Grinning and bearing it. |
| B．Persuading them to stop repeatedly. |
| C．Shouting them to dead. |
| D．Moving away from the rude neighbors. |
The woman killed her neighbor because .
| A．he ignored her advice repeatedly |
| B．she could not stand his playing the guitar too loud |
| C．she could not put up with him any longer |
| D．he played the drums too often |
The author writes the last paragraph to prove that .
| A．being in prison means the loss of freedom |
| B．grinning and bearing it is the best policy |
| C．Edward should follow the example of the woman |
| D．the woman was right to kill her neighbor |