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.

    A cab company in one of Japan's major cities is introducing silent taxi drivers. Miyako Taxi, which is based in Kyoto, shows the new idea in March. The business is currently operating five “Silence Taxis” across the city.

    The cars look like any ordinary taxi，but a notice written on the back of the passenger seat  inform passengers that they have entered one of the new silent fleet. Drivers will offer a greeting when their passenger enters the car, and aside from confirming the route they will not engage in small talk. The drivers can indulge in conversation, only if they are spoken to first, and they are also allowed to communicate in emergency situations.

    Announcing the idea, Miyako Taxi said: “This service is currently in a trial stage, with the goal of creating an in-car atmosphere that provides the most comfortable ride for passengers through limiting the driver's speaking.” According to Japan Today, they made the move after hearing reports from passengers that they were fed up being forced to chat with their drivers.

    The company will assess the popularity of the trial before deciding whether to expand it and roll it out across more of their drivers.

    Language and speaking is at the heart of another issue facing Uber drivers, after lost a High Court Battle to block written tests in London. Drivers applying for a minicab license in the capital will now have to pass the written exam following Uber's failed challenge against Transport for London (TfL). The company argued it could see up to 33,000 existing drivers lose their licences under the new rule.

    The company's London head, Tom Elvidge: vowed to challenge the rule and said, “We've always supported spoken English skills, but writing an essay has nothing to do with communicating with passengers or getting them safely from A to B.”

    More and more birds are flying to settle at Qinghai Lake, one of the highest inland lakes in China, thanks to the protection efforts of local governments. Covering an area of over 4,000 square     kilometers. Qinghai Lake is also the country's biggest salt­water lake. Located in Northwest China's Qinghai Province, the lake is famous for the two islands at its northwest point—Cormorant Island and Egg Island. The two islands have plenty of floating grass and various schools of fish, offering rich food sources for birds. The islands have become a paradise for different kinds of groups of birds and have been called“Bird Islands”．

    Each March and April, when ice and snow covering the Qinghai­Tibet Plateau starts to melt, over 20 kinds of birds fly to the Bird Islands to lay eggs.  During the months, flocks of birds cover the whole sky over the islands and birds eggs can be found everywhere. Visitors can hear the singing of birds from miles away. These have become a world famous symbol of the lake.

    To protect this paradise for birds and support calls for ecological protection, China set up the Qinghai Lake Natural Protection Zone at the end of 1997.Meanwhile, the State has pointed out the Bird Islands and Spring bay of the Qinghai Lake as central protection zones.

    Inspection officials and management employees often patrol the lake, improving local residents' knowledge of related laws and spreading knowledge about animal protection to visitors. They are making great efforts to call on people to love and protect the birds. At the same time, they have built special fences around the island area to prevent wolves, foxes and other carnivorous animals, as well as illegal hunters from breaking up the birds' nest­building, egg­laying and breeding. As a result, more and more birds are coming to the islands for sheltering and breeding.

    Everyone takes drugs. Sometimes a drug might be called a herb but the effect is the same. Drugs and herbs can make life better for they are used to improve health. From the simplest headache to a cure for cancer, people believe that certain drugs can help them. But there is danger if the drugs are not used in a proper way.

    American teenagers sometimes use certain drugs to feel good. They call this “getting high”. The problem is that once a young man or a young woman has the feeling of “getting high”, they want to do it often. If school is boring or too hard, students might get depressed and a drug or herb might help them feel better. If the student takes too much of a drug, the body may change in a wrong way such as a confused mind, poor sight, a headache, and an uncomfortable stomach.

    Schools now have D．A．R．E．program which means Drug Abuse Resistance Education. This program was started so that young students from age 10 to 18 might understand how a drug affects their bodies. The main point of the program is education. Once a student understands certain drugs can cause ill health，he will know he should not use them.

    Education is the key to good nutrition as well. If a student eats correctly, he or she will be full of energy which leads to good study habits and good grades. Poor nutrition may cause the need for more sleep and poor concentration. Proper food is similar to the proper use of drugs. Both allow a healthy body to grow while misuse of them prevents a person from developing normally.

    Plastic is easy, convenient, cheap and long-lasting, but it does great harm to the environment.

    Since plastic entered mass production, 8 billion tons have been produced – and we aren't very good at recycling. By 2015, 6,945 tons of plastic waste had formed, with around 9 percent of it getting recycled. About 79 percent of it ends up in landfills or around the environment, including the ocean. We may end up drowning in plastic before long.

    Chemists at Colorado State University have found a polymer（聚酯）that has many of the qualities of plastics – it's light, strong, durable and heat-resistant – but that can be changed back to its original small-molecule（分子）state for complete recycling. Even after being recycled, the polymer can be turned back into its plastic-like state, and this can be done quickly and cheaply.

    This new polymer has all the good qualities of plastics, yet it is relatively easy to make and to recycle. Making it requires room temperature conditions, a short reaction time to bond the monomer（单体）into polymers and only a small amount of the catalyst（催化剂）remains in the end product. It has a high molecular weight, stands up to heat and generally behaves like plastic. Recycling it requires similarly little effort. Mild lab conditions are required and so is a catalyst. Once applied, the polymers are once again monomers in a matter of minutes and can be used to create another product.

    But don't get too excited about this just yet. Scientists stressed that the polymer isn't ready for mass products just yet. There's still plenty of development to do, including making it more economical to produce and recycle.

    The pursuit of longevity has long been on people's minds, prompting an abundance of research on the effects of food and diet on the human lifespan. According to recent research from the UC Irvine Institute, drinking coffee and wine could help you live longer.

    The 90+ Study evaluated more than 1,600 people over the age of 90 for their lifestyle habits and other qualities that might have contributed to their longevity.

    Participants were visited every six months, when they were given various tests. Researchers also collected information about the participants' diets, lifestyles, and medical histories.

    They found out that two of the habits that helped preserve lives the most are drinking alcohol and coffee. "I have no explanation for it," admitted Dr Claudia Kawas, "but I do firmly believe that moderate (适度的) drinking improves longevity." So should we all be drinking more coffee and wine? While that would be great news, the research may not be as definitive as it seems.

    "Most studies about alcohol consumption, including The 90+ Study, are observational, so we can only say that something about drinking is associated with health and longevity," registered dietitian Jennifer Markowitz told The Daily Meal.

    "I'd be curious to see if the coffee and alcohol drinkers shared other important habits or lifestyle factors that might also play into their longevity."

    In other words, it might not be the wine and coffee that's helping people live longer, but the two substances do have some considerable health benefits. "Wine and coffee are packed with antioxidants(抗氧化剂) which are known to protect our bodies from damage caused by free radicals," explained registered dietitian Keri Gans to The Daily Meal. "Research on antioxidants has shown several heath benefits, including the possibility they may lower the risk of type 2 diabetes, improve cognitive function, decrease the risk of dementia, and lower the risk of heart disease."

    Moderate drinking can be beneficial according to other studies—so long as it's moderate.