Using technology, of course. While special services via webcam(摄像头) and cheating detecting software have been developed now, Mettl, an online company, has developed advanced techniques for netting cheaters, which the company claims are even more reliable and easier to use. Whatever small attempt to cheat, he or she will be found out.

    Mettl has adopted a handful of technologies on its test—taking platform, creating a mini monitoring state in an exam. Here's how it works: A test-takersigns on to Mettl and selects hisher exam from the site's library of pre—loaded tests. Facial and keystroke recognition technology confirm the person that has signed in is the very person, and the system records both the test—taker(through the webcam)and the test—taker's screen throughout the test.

    Mettl's technology uses the test—taker's webcam to detect how many people are using the computer. Soon, it will track eye movement well enough to sense whether the test-taker is looking away from the screen, perhaps to Consult a smart phone or a friend in secret. Mettl also monitors the test-taker's screen and can detect when the test-taker has changed a computer or moved from the test. The system will soon be able to record sound, thus detecting whether the test-taker is talking or being talked to.

    If any irregularities are detected, the system flags the incident and reports it back to the test's administrator. This can bring any number of things, depending on the test-giver's wishes: a completeshutdown of the exam, a warning message that appears on the test-taker's screen, even human instructions from the control center.

    Mettl is hoping its technology will help it break into the country's big MOOC markets.

    Tom appeared on the sidewalk with a bucket of whitewash and a long­handled brush. He stopped by the fence in front of the house where he lived with his aunt Polly. He looked at it, and all joy left him. The fence was long and high. He put the brush into the whitewash and moved it along the top of the fence. He repeated the operation. He felt he could not continue and sat down.

    He knew that his friends would arrive soon with all kinds of interesting plans for the day.

    They would walk past him and laugh. They would make jokes about his having to work on a beautiful summer Saturday. The thought burned him like fire.

    He put his hand into his pockets and took out all that he owned. Perhaps he could find some way to pay someone to do the whitewashing for him. But there was nothing of value in his pockets—nothing that could buy even half an hour of freedom. So he put the bits of toys back into his pockets and gave up the idea.

    At this dark and hopeless moment, a wonderful idea came to him. It filled his mind with a great, bright light. Calmly he picked up the brush and started again to whitewash.

    While Tom was working, Ben Rogers appeared. Ben was eating an apple as he walked along the street. As he walked along it, he was making noises like the sound of a riverboat. First he shouted loudly, like a boat captain. Then he said “Ding－Dong－Dong”， “Ding－Dong－Dong” again and again, like the bell of a riverboat. And he made other strange noises. When he came close to Tom, he stopped.

    Tom went on whitewashing. He did not look at Ben. Ben stared a moment and then said: “Hello! I'm going swimming, but you can't go, can you？”

    No answer. Tom moved his brush carefully along the fence and looked at the result with the eye of an artist. Ben came nearer. Tom's mouth watered for the apple, but he kept on working.

    Ben said, “Hello, old fellow, you've got to work, hey？”

    Tom turned suddenly and said, “Why, it's you, Ben! I wasn't noticing.”

    “Say—I'm going swimming. Don't you wish you could? But of course you'd rather work—wouldn't you? Of course you would.”

    Tom looked at the boy a bit, and said, “What do you call work？”

    “Why, isn't that work？”

    Tom went back to his whitewashing, and answered carelessly.

    “Well, maybe it is, and maybe it isn't. All I know is, it suits Tom Sawyer.”

    “Oh come, now, you don't mean to say that you like it？”

    The brush continued tomove.

    “Like it? Well, I don't see why I shouldn't like it. Does a boy get a chance to whitewash a fence every day？”

    Ben stopped eating his apple. Tom moved his brush back and forth, stepped back to look at the result, added a touch here and there, and stepped back again. Ben watched every move and got more and more interested. Soonhe said，“Say, Tom, let me whitewash a little.”

    Tom thought for a moment, and was about to agree, but he changed his mind.

    “No—no—it won't do, Ben. You see, Aunt Polly wants this fence to be perfect. It has got to be done very carefully. I don't think there is one boy in a thousand, maybe two thousand, that can do it well enough.”

    “No—is that so? Oh come, now—let me just try. Only just a little.”

    “Ben, I'd like to, but if it isn't done right, I'm afraid Aunt Polly … ”

    “Oh, I'll be careful. Now let me try. Say—I'll give you the core of my apple.”

    “Well, here—No, Ben, now don't. I'm afraid …”

    “I'll give you all of it.”

    Tom gave up the brush with unwillingness on his face, but joy in his heart. And while Ben worked at the fence in the hot sun, Tom sat under a tree, eating the apple, and planning how to get more help. There were enough boys. Each one came to laugh, but remained to whitewash. By the time Ben was tired, Tom sold the next chance to Billy for a kite; and when Billy was tired, Johnny bought it for a dead rat—and so on, hour after hour. And when the middle of the afternoon came, Tom had won many treasures.

    And he had not worked. He had had a nice idle time all the time, with plenty of company, and the fence had been whitewashed three times. If he hadn't run out of whitewash, Tom would have owned everything belonging to his friends.

    He had discovered a great law of human action, namely, that in order to make a man or a boy want a thing, it is only necessary to make the thing difficult to get.

    Like many other of our lives today, education has become a global enterprise. In microcosm（微观世界）, my school is proof of how global. Monkseaton High School is an ordinary state-funded school of 850 students in the unfashionable part of northeastern England. Over the past seven years it has sent 12 students to American universities — two of them to Harvard. Monkseaton has, in turn, attracted students from other countries, including Germany and Latvia. Monkseaton now almost routinely receives inquiries from students in Eastern European countries. Obviously, learning English is a big draw, but his pattern ofstudent movement was unheard of five years ago.

    The brain drain is a universal phenomenon, and countries that don't face up to the new reality will be losing some of their most precious resources. The northeast of England is its poorest region, and has experienced a severe loss of highly qualified professionals-to-be. Some of the most able 18-year-olds are going to other parts of Britain, even to other countries. What is happening here is happening to Britain as a whole. Most noticeably, there is a growing trend of British students taking degrees in American universities. This year the number will break the psychological barrier of 1,000 students for the first time.

    And what is happening at the secondary-school level is happening to higher education. Wherever they come from, today's students have a very different perspective on education from their parents. Because of television, the Internet and their travels, these students see the world as a much smaller place than their parents once did. They are more confident in accepting the challenge of moving from one country to another, from one culture to another; in many cases they can even apply to schools over the Internet. Students are also more aware of the overall cost of education and are looking for value for money. Plus, for many, education linked to travel is a better option than education at home.

    Starting Cycling

    We have two services designed to give people the confidence and knowledge to cycle successfully.

    Lessons

    All our instructors have been trained to National Standards level of “Bike-ability”. This means you will be trained to a standard consistent across the whole country.

    There are 3 levels of skills to progress through. Children would start with levels 1 & 2, progressing from the playground or park to cycle on less busy local roads. Teenager and adult beginners can also learn levels 1 & 2 in an off-road and quiet environment.

    Confident teenagers and adults can broaden their skills by learning level 3, using multi-lane roads and larger roundabouts. We provide both a complete package of lessons for the beginner or individual lessons tailored to the client. Whatever the need we can address and practice until perfect!

    Cost is ￡30 per hour.

    Guided Ride

    We know that riding on the roads in London can be scary, and if you have to navigate (确定行车路线) as well it can become a real hard task! The Guided Ride service takes all the stress out of it for you by providing the following:

    Route planned in advance to suit your skill level. Route map provided to you.

    Cycle and equipment checked. We will teach you a simple method to check basic roadworthiness (车辆性能) of your bike that you can perform on a weekly basis.

    Route discussed and focus given to any areas requiring special attention.

Cycle along with the instructor close behind. Here the traffic can be controlled by the instructor and rider observed.

    We currently cover London Zones 1 & 2. Please contact us if your requirements are outside of these areas.

    Cost ￡30 per hour.

    Everyone needs friends. We all like to feel close to someone. It is nice to have a friend to talk, laugh, and do things with. Surely, there are times when we need to be alone. We don't always want people around. But we will feel lonely if we never have a friend.

    Sometimes friends move away. Then we feel very sad. We miss them very much. But we can call them and write to them. It could be that we would even see them again. And we can make new friends. It is surprising to find out how much we like new people when we get to know them.

    No two people are the same. Sometimes friends don't get along well. That doesn't mean that they no longer like each other. Most of the time they will make up (和解) and go on being friends.

    Families sometimes name their children after a close friend. Many places are named after men and women who have been friendly to people in a town. Some libraries are named this way. So are some schools. We think of these people when we go to these places.

    There's more good news for people who have friends. They live longer than people who don't. Why? It could be that they are happier. Being happy helps you stay well. Or it could be just knowing that someone cares about you. If someone is concerned about you, you will feel good.

    This may be sad to hear, but the number of Britain's famous red telephone boxes has been falling for decades. The phone box is well-known to foreign fans of Britain and visitors to the country. There are still many left to enjoy, however.

    There is deep feeling for the bright red boxes with the Queen's coat of arms (盾形徽章). The places that still have the red box are mostly small and in the countryside. In these places, the phone box may be a symbol of community, as well as a landmark (地标).

    But there are still several cities, including London, that still have original red phone boxes in place.

    For tourists, they probably make the perfect place for a selfie (自拍照). Visit London any day in the summer and you'll see people with their smartphones taking photos with the red box behind them. People who receive the photo will have no trouble guessing where the selfie was taken.

    Ever since mobile phones became more widespread, there has been less and less point in public phones. But although the red boxes are no longer popular places to make a call from, new uses are being found for them all the time. The famous design created by Giles Gilbert Scott back in 1924 lives on, but in ways the British architect (建筑师) would never have imagined.

    Some of the new ways the phone boxes are being used are quite unusual. For example, some have been changed into tiny coffee shops. Others are hat stores. In one distant area of the country, a red box that had not been used for a long time has been turned into a small lending library.

    Even back in their heyday in the last century, phone boxes were put to other uses. Some people even used them as toilets in an emergency.

But for many, they were a safe place to hide if you were caught up in the rain. Britain's weather is unpredictable: sun one moment, heavy rain the next. So if you are planning to visit the UK and want the perfect British selfie, standing inside a red telephone box in a rainstorm may be your best bet.