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 increase the length of time we will remember it.

    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 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 (突击学习) 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.

    There are many weight loss products，plans and programs in the market.However,if most of these programs were effective，we would see obesity trends reversing,yet we are witnessing more and more people struggling with weight.

    Experiences of dieters regaining pre-dieting weight within 5 years are common.Therefore,a fitness program that works over a long period of time is something you should be looking for.Before reaching for your wallet or purse,make sure the program is exactly what it claims to be.

Professional endorsement(认可)

    A good program should not insist on offering pills, injections, powders or similar products that are not endorsed by a medically trained professional.You choice of programs should have been designed by a medically trained professional.

Unreallstic promises

    A good program should not make unrealistic promises，such as“To lose 5 pounds in a week,with no exercise!” Therefore,it is advisable to judge whether the promises being made are realistic.The plan should also have a high success rate of weight loss.

Qualification

    A weight loss program should consider the health of the applicants.It should consider their age,medical condition,gender,health background，medication and more,in order to make a plan that meets the needs of every applicant.A good program should include diet and exercise in order to promote permanent and good health.

Restriction

    A good program should not overly restrictive(限制的)on food allowances.Some programs ask you not to eat foods from the main nutrient food groups like fruit and vegetables.A successful weight loss plan,for most people,should not involve less than 1,200 calories per day.

Cost effective

    A long-term program does not have to cost you lots of money.An effective plan that is reasonably priced can save you a large sum of money that can be spent on other healthy habits.This car in turn improve your lifespan.

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    Although Paris is often considered the city of romance, close to a million adult who call it home are single. Many single people say that France's capital is one of the most difficult places to meet people. The complaints of this lonely group have inspired a new phenomenon known as “supermarket dating.” At Galerie Lafayette Gourmet, singles can shop for more than just the items on their grocery list. They can look for someone who has blue eyes, brown hair, and is 1.8 meters tall, or whatever may be on their romantic shopping list.

    At this Paris location, single people of all ages can schedule their shopping for Thursday nights between 6:30 and 9:00 p.m. When they walk through the door, they pick up a purple basket to advise that they are looking for love. They try to arrive early because the baskets disappear quickly, and then they have to wait in line for their turn to wander the store aisles.

    With purple baskets in hand, shoppers can consider their romantic options while they pick out their groceries. When they are ready to pay, they can go to the checkout line for singles who want to chat.

    Most of the people who look for love in the supermarket are skeptical of Internet dating. They know that it is easy to embellish（美化）one's appearance or to lie about one's age over the Internet. The supermarket, on the other hand, is considered a safe and casual environment in which to meet a potential match. In addition, what one finds in another's grocery basket can say a thing or two about that person's character or intentions. Buying pet food can be a man's way of showing a potential match that he has a sensitive side. Women who fill their baskets with low-fat food show their healthy style of living. These days it's possible to find much more than food at a grocery store.

    One day, I received a call from a colleague. He was about to give a student a zero for his answer to a physical problem， while the student claimed a perfect score. I was elected as their arbiter. I read the examination problem: “Show how it is possible to determine the height of a tall building with the aid of a barometer(气压计).” The student had answered: “Take the barometer to the top of the building，attach a long rope to it，lower it to the street， and then bring it up, measuring the length of the rope. The length of it is the height of the building. ”

    The student had really answered the question completely, but the answer didn't confirm his competence in physics. I suggested the student try again. I gave him six minutes to answer the question, warning that the answer should show some knowledge of physics. Five minutes later, he said he had many answers and clashed off one, which read： “Take the barometer to the top of the building and lean over the edge of the roof. Drop the barometer, timing its fall with a stopwatch. Then, use the physical formula (公式）to calculate the height of the building. ”

    At this point, my colleague had to accept it, and then the student made almost full marks. I couldn't help asking the student what the other answers were. He listed many others ，and then added “Probably the best is to take the barometer to the administrator and said to him，' Sir, here is a fine barometer. If you tell me the height of the building, I will give it to you.，”

    Then, I asked the student if he really did not know the conventional answer to this question. He admitted that he did, but said that he was fed up with high school and college instructors trying to teach him how to think.

    The name of the student was Bohr who later was famous all over the world. He won the Nobel Prize for Physics in 1922.

    When it comes to the most famous 20^th century painters of the United States, Grandma Moses should be mentioned, although she did not start painting until she was in her late seventies. As she once said to herself:" I would never sit back in a rocking chair, waiting for someone to help me." No one could have had a more active old age.

    She was born on a farm in New York State, one of five boys and five girls. At 12 she left home and was in domestic service until at 27 she married Thomas Moses, the hired hand of one of her employers. They farmed most of their lives, first in Virginia and then in New York State, at Eagle Bridge. She had ten children, of whom five survived; her husband died in 1927.

    Grandma Moses painted a little as a child and made embroidery(刺绣) pictures as a hobby, but only changed to oils in old age because her hands became too stiff(僵硬的) to sew and she still wanted to keep busy and pass the time. Her pictures were first sold at the local drugstore and at a market and were soon noticed by a businessman who bought all that she painted. Three of the pictures were exhibited(展览) in the Museum of Modern Art, and in 1940 she had her first exhibition in New York. Between the 1930's and her death, she produced some 2,000 pictures: careful and lively portrayals of the country life she had known for so long, with a wonderful sense of color and form. "I think really hard till I think of something really pretty, and then I paint it" she said.

On a daily basis, the digital expanse witnesses an exchange of over two billion pictorial representations. Although imagery offers an entertaining and articulate avenue for online interaction, the process of digesting and generating such content presents formidable obstacles for individuals who are devoid of sight or are enduring profound visual impairments. Given the reality that there are more than 39 million individuals who are sightless, and an excess of 246 million who are grappling with severe visual limitations, a significant cohort may perceive themselves as alienated from the discourse that revolves around photographic content on the Internet. Scholars hailing from Harvard University are endeavoring to construct technological solutions that would enable the visually impaired populace to partake in the appreciation of photographic imagery with the same zest as their sighted counterparts.

The advent of automated descriptive text represents a groundbreaking innovation that engenders a narrative depiction of a photograph by leveraging the latest advancements in the field of object recognition technology. Individuals who rely on auditory output devices on their digital gadgets will now be presented with an enumeration of elements that a photograph might encapsulate as they navigate through online images. Previously, those utilizing auditory output devices were limited to hearing solely the nomenclature of the individual who disseminated the photograph, succeeded by the designation "photo" upon encountering a pictorial piece. However, the introduction of automated descriptive text now allows for a more elaborate portrayal of the contents of a photograph. For example, an individual might now perceive an auditory description such as "a visual scene comprising three individuals, exhibiting expressions of joy, in an outdoor setting."

This capability is made possible through the object recognition technology developed by Harvard University, which is predicated on a computational framework that encompasses billions of variables and has been refined through exposure to millions of exemplars. Each stride in object recognition technology signifies the potential for researchers to render technological interfaces increasingly inclusive and accessible to a broader demographic. When individuals are interlinked, they are positioned to accomplish remarkable feats, both in isolation and as a collective entity, and such interconnection benefits all participants within the network.

The rollout of the automated descriptive text is initially targeting auditory output devices on mobile communication devices configured to English, with plans to extend this functionality to additional linguistic variants and technological platforms in the near term. Although this technology is still in its infancy, harnessing its current competencies to articulate the essence of photographs marks a pivotal advancement in the quest to furnish our community with visual impediments with the identical advantages and gratifications that the broader population derives from photographic imagery.