PEOPLE who have had a painful experience may wish they could wipe the memory from their minds. Researchers at Johns Hopkins University, US, say that this may someday be possible.
A drug remains far off, but researchers have laid a foundation with their discovery that proteins can be removed from the brain’s fear center to cut memories forever.
Previous research had already shown that a special behavior therapy (治疗) could cut painful memories. But relapse (复发) was possible because the memory hadn’t necessarily disappeared.
By looking at that process, Richard Huganir and Roger Clem, two researchers from Johns Hopkins University, discovered a “window of vulnerability (脆弱的窗口)” when proteins are created. The proteins help signals travel within the brain as painful memories are made. Because the proteins are unstable, they can be easily removed with drugs or behavior therapy to cut memories.
Researchers used mice to find the window, but think the process would be the same in humans. They used electric shocks to make the mice fear a certain sound. The sound triggered (触发) the creation of the proteins, called calcium-permeable (钙通透性) AMPARS, which formed for a day or two in the fear centers of the mice’s brains.
The researchers are working on ways to reopen the window by recalling (唤醒) the painful memory and using drugs to remove the protein. They published their report online last month in Science Express.
Their research has drawn interest and concern from experts in mental healthcare.
Kate Farinholt, a mental health expert with the National Alliance on Mental Illness, Maryland, US, said many people suffering from a painful event might benefit from erasing a memory. “Erasing a memory and then everything bad built on that is an amazing idea, and I can see all sorts of potential ,” she said.
But there are a lot of unanswered questions, too.
“Completely deleting a memory is a little scary. How do you remove a memory without removing a part of someone’s life,” Farinholt said. “And is it best to do that, considering that people grow and learn from their experiences?”What have researchers at Johns Hopkins University found recently?
| A．A new drug to erase painful memories from human brains. |
| B．A special behavior therapy to erase painful memories. |
| C．Removing certain proteins from the brain can wipe painful memories. |
| D．Erasing memory damages a patient’s brain functions. |
What makes it possible to erase painful memories according to Paragraph 4?
| A．The way the brain cells are created. |
| B．The unstable character of the proteins in the brain. |
| C．The strength of the signals the proteins send. |
| D．The drugs that can stop the formation of memories. |
Which of the following shows the stages of the process done on mice?
a. removal of fear proteins b. making mice fear a certain sound
c. fear proteins created in mice brains d. making mice recall painful memories
| A．a-b-c-d | B．d-a-c-b | C．b-c-d-a | D．c-b-d-a |
What is Kate Farinholt’s opinion of the research?
| A．People may lose the chance to learn from their bad experiences. |
| B．The research will be a great breakthrough in treating painful memories. |
| C．People could suffer long-term memory loss. |
| D．People could forget happy memories as well. |
OTTAWA -- Canada’s western city of Calgary is the world’s best city when it comes to healthy living, local press reported Monday.
According to an international survey by Mercer Human Resource Consulting, a London-based consulting firm, Calgary was put at the top of a list of 144 cities. It scored 121 points, just above Honolulu’s score of 120. Helsinki（赫尔辛基，芬兰首都） and Ottawa followed at 119.5 and 118.5 respectively.
Three other Canadian cities came in the top 20. Montreal and Vancouver tied for ninth and Toronto came in at 18th.
The scores are based on air pollution levels, availability and quality of hospitals and medical supplies, as well as the efficiency of waste removal and sewage systems.
In America, the lowest scoring city was Atlanta, which was ranked 76th. Athens was the lowest scoring city in Western Europe, ranking 120th because of its air pollution. London was ranked 59th.How many Canadian cities are in the top 20?
| A．3. | B．4. | C．5. | D．6. |
Which of the following is NOT taken into account when the cities were scored?
| A．Weather conditions. | B．Air quality. | C．Waste removal. | D．Medical supplies. |
Among the following cities, which is the lowest scoring one?
| A．Atlanta. | B．Athens. | C．London. | D．Helsinki. |
Malaysia is a country of exciting beauty, with a tropical（热带的） climate. Malaysia’s weather is hotter in the lowlands and cooler in the mountains and highlands. Temperatures vary between 20 and 30 centigrade. Rainfall can be expected at any time, with an average of between 200 and 260 centimeters.
The Malaysian population consists of Malays, Chinese, Indians and Eurasians. Its main religions are Islam, Buddhism, Hinduism, Taoism and Christianity. Its national language is Malay. English is widely spoken and is used all over the country. Other languages spoken in Malaysia are some Chinese dialects, Tamil, Portuguese and Arabic.
Malaysia is an exciting and fascinating place for tourists, with something special planned throughout the year. The natural attractions are plentiful, with magnificent mountains lying in green, large stretches of sandy beaches and hospitable and friendly people.
Malaysia’s economy is the most advanced in this part of the world. The annual income is M$1, 680, one of the highest in the whole of Asia. Malaysia is the world’s leading exporter of rubber, tin, tropical hardwood, palm oil, pepper, tea, coffee and cocoa and has vast resources of oil.
Malaysia’s capital is Kuala Lumpur in the southwest of the Malay Peninsula. Kuala Lumpur arose in the 1860s when tin was discovered, grew and spread very quickly. It became the state’s capital within forty years of its founding. Now it is home to over one million inhabitants, about 56% of whom are Chinese, 28% Malays and the rest are from anywhere and everywhere.If you visit Malaysia, you will see ________.
| A．people of the white and yellow races |
| B．many temples and churches |
| C．beautiful tropical scenery |
| D．All of the above. |
Though Malay is Malaysia’s national language, ______.
| A．over half of its population speak Chinese |
| B．English is also a popular language |
| C．people don’t know Malay |
| D．it’s only spoken by Malays |
Which of the following is NOT true according to the passage?
| A．Malaysia is one of the richest countries in Asia. |
| B．It rains a little now and a little then in Malaysia. |
| C．Kuala Lumpur became Malaysia’s capital before 1910. |
| D．Malaysia is rich in agricultural products. |
Honestly, since my daughter was born, I have thought a lot about how to raise a child. I once heard a story that told about when a baby was born. The story said that when a baby was born, a new master was born. The parents of that baby would become the servants. The question is: Why? Based on my observation, this phenomenon is true. Most parents who don't pay much attention to their kids have difficulties with their kids' attitude.
I'll make a comparison of how two families raise their children. The first one is a family with three children. Both mother and father never say "No" to their children's demands. As a result, all of their children became stubborn and won't listen to their parents’ words, "We can't."
The second family educated their children strictly from one year old to high school. The parents never approved or agreed directly to give their children what they wanted. They always postponed one or two days, even if they could afford it. Due to the way their parents educated them, these children understood that if they wanted something, they had to wait or they had to make an effort first. As a result, all the kids from the second family successfully graduated from university on time.
In my opinion, if we want to be successful parents and raise our children well, we have to start disciplining them when they are toddlers but not wait until they become teenagers.Why did the writer give two different stories in this passage?
| A．To help prove his opinion about raising a child. |
| B．To list different ways that parents may take. |
| C．To criticize some parents’ foolish action. |
| D．To prove that his way of education is right. |
What does the underlined word “postponed” in the third paragraph mean?
| A．Carried out at once. | B．Gave up. |
| C．Put off. | D．Made a decision. |
In the writer’s opinion, which of the following about raising a child is TRUE?
| A．Children should be respected once they were born. |
| B．Parents should educate their children as early as possible. |
| C．It is right time to educate their children when they are teenagers. |
| D．Children should be helped whenever they make mistakes. |
Cara Lang is 13. She lives in Boston, Massachusetts, in me U. S. Last Thursday, she didn't go to school. She went to work with her father instead. Every year, on the fourth Thursday in April, millions of young girls go work. This is Take Our Daughters to Work Day. The girls are between me ages of 9 and 15. They spend the day at work with an adult, usually a mother, father, aunt, or uncle. They go to offices, police stations, laboratories, and other places where their parents or other family members work. Next year, the day will include sons, too.
The Ms. Foundation, an organization for women, started the program about ten years ago. In the U.S., many women work outside the home. The Ms. Foundation wanted girls to find out about many different kinds of jobs. Then, when the girls grow up, they can choose a job they like.
Cara's father is a film director. Cara says, “It was very exciting for me to go to the studio with my dad. I saw a lot of people doing different jobs.” Many businesses have special activities for girls on this day. Last year, Cara went to work with her aunt at the University of Massachusetts. In the engineering department, the girls learned to build a bridge with toothpicks and Candy. In the chemistry department, they learned to use scales. They learned about many other kinds of jobs, too.
Right now, Cara does not know what job she will have when she grows up. But because of Take Our Daughters to Work Day, she knows she h2Ls many choices.What is Cara's father?
| A．An engineer. | B．An official. | C．A moviemaker. | D．A professor. |
According to the passage, Take our Daughters to work Day is ______.
| A．on every Thursday in April |
| B．a holiday for girls of all ages |
| C．a day for girls to know about jobs |
| D．a day for girls to get a job easily |
On this special day, Cara has done all the following EXCEPT that ____.
| A．she learned to use scales |
| B．she worked as an actress |
| C．she went to work with her aunt |
| D．she used toothpicks and Candy to build a bridge |
What is probably the best title for the passage?
| A．Cara Lang, a Fortunate Girl |
| B．Take Our Daughters to Work Day |
| C．Children's Day and Work Day |
| D．Ms. Foundation, an Organization for Women |
South Asia heatwave kills nearly 100
DHAKA - A heat wave sweeping India, Bangladesh(孟加拉国) and Nepal has killed nearly 100 people over the past two weeks, officials said on June 3, 2005.
A third of the people died in northern Bangladesh, mostly women and children from dehydration(脱水), heat stroke and diarrhoea(腹泻).
"We are getting reports of several deaths due to heat wave and related diseases almost every day," an official said, as temperatures touched 43degC .
The weather office in Dhaka said the hot weather will persist for another week until the monsoon(季风) rains which are normally due by the middle of June.
Severe heat conditions in the southern Indian have killed at least 55 people, officials in the two states said.
While temperatures have fallen from a high of 45degC in Andhra Pradesh to around 40degC, giving a respite to people, they are still on the rise in Orissa with Talcher town registering 48.5deg C, a weather official said.
At least five people have died in Nepal from extreme heat, the government said. We can infer that the heatwave can cause ______.
| A．heat stoke | B．dehydration | C．diarrhoea | D．all above |
When the monsoon rains come, the temperature will _______.
| A．remain the same |
| B．go on to rise sharply |
| C．begin to drop obviously |
| D．rise a little |
Which place is the hottest in the early June, 2005?
| A．Dhaka | B．Talcher | C．Andhra Pradesh | D．Nepal |
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