Have you ever found yourself in this situation：You hear a song you used to sing when you were a child-a bit of nostalgia（怀旧）or "blast from the past，"as we say．But it is not a distant childhood memory．The words come back to you as clearly as when you sang them all those years ago．

    Researchers at the University of Edinburgh studied the relationship between music and remembering a foreign language．They found that remembering words in a song was the best way to remember even one of the most difficult languages．

    Here is what they did. Researchers took 60 adults and randomly divided them into three groups of 20．Then they gave the groups three different types of "listen-and-repeat" learning conditions．Researchers had one group simply speak the words．They had the second group speak the words to a rhythm，or beat．And they asked the third group to sing the words．

    All three groups studied words from the Hungarian language for 15minutes．Then they took part in a series of language tests to see what they remembered．

    Why Hungarian，you ask ? Researchers said they chose Hungarian because not many people know the language．It does not share any roots with Germanic or Romance languages，such as Italian or Spanish．After the tests were over，the singers came out on top．The people who learned these new Hungarian words by singing them showed a higher overall performance．They did the best in four out of five of the tests．They also performed two times better than those who simply learned the words by speaking them．

    Dr．Katie Overy says singing could lead to new ways to learn a foreign language．The brain likes to remember things when they are contained in a catchy 3，or memorable 4，tune 5．

    Dr．Ludke said the findings could help those who struggle to learn foreign languages．On the University of Edinburgh's website Dr．Ludke writes，"This study provides the first experimental evidence that a listen-and-repeat singing method can support foreign language learning，and opens the door for future research in this area．"

    Grown-ups are often surprised by how well they remember something they learned as children but have never practiced ever since. A man who has not had a chance to go swimming for years can still swim as well as ever when he gets back in the water. He can get on a bicycle after many years and still ride away. He can play catch and hit a ball as well as his son. A mother who has not thought about the words for years can teach her daughter the poem that begins “Twinkle, twinkle, little star” or remember the story of Cinderella or Goldilocks and the Three Bears.

    One explanation is the law of overlearning, which can be stated as follows: Once we have learned something, additional learning trials will help strengthen the related knowledge and skills.

    In childhood we usually continue to practice such skills as swimming, bicycle riding, and playing baseball long after we have learned them. We continue to listen to and remind ourselves of words such as “Twinkle, twinkle, little star” and childhood tales such as Cinderella and Goldilocks. We not only learn but overlearn.

    The multiplication tables (乘法口诀表) are also an exception to the general rule that we forget rather quickly the things that we learn in school, because they are another of the things we overlearn in childhood.

    The law of overlearning explains why cramming for an examination, though it may result in a passing grade, is not a satisfactory way to learn a college course. By cramming, a student may learn the subject well enough to get by on the examination, but he is likely soon to forget almost everything he learned. A little overlearning, on the other hand, is really necessary for one's future development.

    It feels like every time my mother and I start to have a conversation, it turns into an argument. We talk about something as simple as dinner plans and suddenly, my mother will push the conversation into World War 3. She'll talk about my lack of bright future because I don't plan to be a doctor. And much to her disappointment, I don't want to do any job related to science, either. In fact, when I was pushed to say that I planned to major (主修) in English and communications, she nearly had a heart attack.

"Why can't you be like my co-worker's son?" she bemoans all the time. Her coworker's son received a four-year scholarship and is now earning 70,000 dollars a year as an engineer. I don't know what to answer except that I simply can't be like Mr. Perfect as I've called the unnamed co-worker's son. I can't be like him. I am the type of the person who loves to help out in the community, write until the sun goes down, and most of all, wants to achieve a career because I love it, not because of a fame or salary.

    I understand why my mother is worried about my future major. I've seen my mother struggle to raise me on her small salary and work long hours. She leaves the house around 6:30 am and usually comes home around 5 pm or even 6 pm. However, I want her to know that by becoming a doctor, it doesn't mean I'll be successful. I'd rather follow my dreams and create my own future.

    An earthquake is one of the most common natural disasters. It may cause great damage.  So it is wise to learn some simple safety tips to protect yourself or your family members.

    Fragile items, like those made of glass should usually be placed on a lower surface, near the ground instead of placing them on cupboards higher up. Never place them near your bed, sofas and other furniture where you would be sitting or lying down. When there is a strong movement, these pieces will fall on the floor directly and not on you.

    There is a strong chance of short circuits（短路）and fire breakouts during an earthquake. Make sure you turn off electrical connections and gas immediately when an earthquake happens.

    During an earthquake, lie beneath an object that is not easily damaged. Do not go near objects that could directly fall on you. Never use the elevator to go down. Stay inside until the shaking stops and it is safe to go outside. Research has shown that most injuries happen when people inside buildings try to go out. Use the staircases at all times.

    If you are outdoors, do not take shelter under a tree, streetlights, electric poles or tall buildings. If you are driving, stop your car and stay in a safe place. Do not park your car under a tree or any tall object.

    If trapped in debris (瓦砾堆), cover your mouth with a handkerchief or clothing. Tap on a pipe or wall so rescuers can find you. Use a whistle (哨子) if one is available. Never shout for help. Shouting can cause you to breathe in dangerous amounts of dust. Do not light a match because you may burn yourself. Do not move about or kick up dust.

    Despite what so many people would love to believe, NASA hasn't discovered any evidence of past or present intelligent life on Mars. Therefore, when the Curiosity rover (好奇号探测器) found something suspicious on the Red Planet's surface, they were not only surprised but also a little bit worried.

    The thin fragment(碎片) was suspicious enough to guarantee its own name, with NASA's Curiosity rover team calling it the "Pettegrove Point Foreign Object Debris", named for where it was discovered. With no idea what it was or where it came from, the rover's handlers began to worry that it might actually be a piece of the rover itself, suggesting some unseen damage or other issue with the robot. Thankfully, those concerns seem to have been unfound.

    In a new update from NASA the object has now been identified as a natural piece of rock rather than a piece of any man-made craft or vehicle. The team analyzed the unusual object with a tool called the Chem Cam RMI. The instrument uses a laser (激光器)to sniff out the makeup of anything that is pointed at, and the results for this particular piece of debris revealed that it's actually just a very thin piece of rock.

    NASA describes the inspection: The planning day began with an interesting result from the previous plan's Chem Cam RMI analysis of a target that was referred to as "Pettegrove Point Foreign Object Debris"(PPFOD)，and supposed to be a piece of spacecraft debris fact. In fact it was found to be a very thin slice of rock, so we can all rest easy tonight. Curiosity has not begun to shed its skin!

    How this particularly thin sliver of rock got to where it is—and why it seems to be a different colour than the surrounding sand and debris—remains unexplained, but at least the rover isn't falling apart.

There is increasing evidence suggesting that ultra-processed food addiction is indeed a significant issue. These foods, which are carefully manufactured in industrial factories rather than in the familiar setting of grandma's kitchen, are filled with altered ingredients that are artfully combined to enhance fat, sugar, and salt levels. Moreover, they contain a lots of flavor and sensory enhancers, which render them irresistibly appealing. Examples of ultra-processed foods range from packaged snacks to fast food and mass-produced desserts. In fact, they account for nearly 60 percent of the calories consumed in the United States.

Studies have revealed that up to 20 percent of adults and 15 percent of kids and adolescents might exhibit signs of addiction to these foods, a phenomenon that has been recognized for decades as rat studies in the 1980s demonstrated that the brain's reward system is powerfully activated when rats consume certain foods, a reaction similar to that when they self-administer cocaine.

In recent years, as the obesity rate in America has soared to 42 percent, especially among Black and Hispanic populations, scientists have been devoting increased attention to the impact of ultra-processed food addiction. These foods not only activate the brain's reward system but also may involve the gut-microbiology. Symptoms of craving and withdrawal are clearly evident with ultra-processed foods. People will go to great lengths to obtain these foods, and when they are refused, they may experience a series of discomforts such as headaches, fatigue, and irritability(易怒的). A study in 2022 found that ultra-processed foods meet the same addiction criteria as tobacco products.

High consumption of ultra-processed foods is linked to numerous health problems, including heart disease, type 2 diabetes, obesity, depression, anxiety, and an increased risk of death. Thin people can also be addicted, perhaps burning off the extra calories through exercise or having a genetic predisposition(易患病体质) not to gain weight easily. Food companies argue against denying these foods, but experts advocate for clear nutritional labels and restrictions on marketing to children. Treating food addictions remains an open question, but there is hope that people will become more aware of the dangers, just as they did with smoking.