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.

    The Women's Institute is urging supermarkets to do more to help consumers reduce their home food waste, after a survey of its own membership showed widespread confusion about “best before” and “use by” labeling(标签) on packaging.

    Its new analysis of products on supermarket shelves found that “once-opened” instructions were often contradictory and often failed to make clear whether they were a guide to food safety or quality. Only 45% of 5,000 WI members surveyed understood that best-before dates were a sign of food quality, while 26% did not understand that the more important use-by dates were a decisive guide to food safety.

    In its report on food waste, the WI said supermarkets were “potentially contributing to home food waste by leading customers to buy more food than they need, and giving conflicting and confusing on-pack information that leaves customers unsure about how long a product remains safe to eat in the home setting”. The 42-page report is part of the WI's ongoing campaign to reduce food waste. To underline the point about conflicting information, it cites(引用) a can of Sainsbury's own-brand sweetcorn advising consumers to eat it within one day of opening, while a similar tin from Waitrose gave consumers two days to finish it. Green Giant sweetcorn, however, has no specified date for eating once opened.

    Marylyn Haines Evans, chair of the Women's Institute's public affairs said: “WI members are some of the more informed members of society about food and cookery, but they are still confused about food labelling and 'once-opened' information. So we would like supermarkets to extend the amount of time that consumers have to use a product in their homes by making all of their once-opened instructions on product packaging consistent, and completely remove once-opened instructions on products where food safety is not an issue.”

    Blue Marine Seafood Co., Ltd.
    Job Openings at Blue Marine Seafood Co., Ltd.
    Position: Senior Accountant
    Requirements: (1) At least 7 years of related experience. (2) Candidates should have a solid background in accounting, budgeting and financial reporting.
    Position: Security Consultant
    Requirements: (1) At least 5 years of related experience. (2) A solid understanding of security policies and risk assessment is required.
    Position: Public Relations Director
    Requirements: (1)At least 7 years of field experience. (2) Strong communication skills: must communicate clearly and effectively to varying audiences; must be comfortable presenting ideas to large and small audiences; must have strong analytical skills; must have excellent interpersonal skills.
    Position: Project Manager
    Requirements: Ideal candidates will have a university degree in Mechanical Engineering or Chemical Engineering and experience overseeing a large-scale expansion project.
    How to apply:
    E-mail your cover letter and resume(简历) to Mr. Kevin Donlin at jobs@seafood.com
    Please, point out the position applied for in the cover letter
    Your resume must include a list of recent work references and phone numbers so they can be contacted.
    Qualified candidates will be invited for personal interviews between 25th and 27th of December 2017.
    To: Kevin Donlin (jobs@seafood.com)
    From: John Daker (iconsult@hotmail.com)
    Date: December 10
    Subject: Position at Blue Marine Seafood
    Dear Mr. Kevin Donlin,
    My name is John Daker and I'm writing in response to your job announcement for the Security Consultant position.
    I have 9 years of experience in the security field and have worked in both risk assessment and policy information. As a senior manager in my previous job, I have proven myself as an effective team leader with excellent communication skills. I am very interested in this position and would appreciate having the opportunity to discuss it with you further.
    Thank you for taking time to review my resume and I am looking forward to hearing from you soon.
    A list of references is attached to my resume.
    Respectfully,
    John Daker

    The horse I'm riding is named Candy, which is appropriate, taking account of her love for eating. As we go our way down the mountain of Big Bend National Park, Texas, I'm sweating—half due to the hot weather, half due to an effort to stay on the horse. Candy, however, is relaxed and stops to eat cactuses (仙人掌) as she passes. She is used to the dusty trails through hills and canyons(大峡谷) and ignores my attempts to guide her away from her delicious food. Our ride becomes a battle of will, which Candy wins easily. I comfort myself by admiring the views across Big Bend's wide open spaces.

    Texas only national park, Big Bend, extends across 800,000 acres of the Chihuahuan Desert, in the deep southwest of the state right along the border with Mexico. It is named after the U-turn that the Rio Grande River makes here. It has seen a lot of fights. The Spanish, Anglo-American settles, Mexicans, and Apache and Comanche American Indians all fought to rule this place.

    Our group member, Mike, knows every corner of the park and describes it as “sort of a secret place”. Even some Texans don't know about Big Bend, he says. Other local people describe it as a forgotten national park. Compared with the almost five million travellers that descend on the Grand Canyon every year, only 30000 make it here.

    There are six of us in the riding group, all fairly inexperienced, led by tour guides, Linda and Janelle, who keep both us and the horses in line. We trek along the top of an 800-foot mountain, with wide-winged eagles flying beside us. The air is noiseless.

    The park is fantastic for hikes and has a variety of marked walking paths. The walk is a five-mile round trip. While the final stretch is rather steep, the views over giant canyons and plains are worth the effort.

    Your next car might drive itself. After years of trials on city streets, driverless vehicles are now on the way. Last month, a driverless bus began carrying passengers through Lyon, France. Most in the automobile industry think self-driving vehicles will be on the road by 2020 or earlier.

    Driverless cars will first be huddled with human-driven cars. But the first places where they will become dominant（统治的）are highly populated urban areas. Many advanced cities are already reducing the role of human-driven cars. Driverless cars will quicken that process and will bring us enormous benefits.

    Driverless cars will reduce accidents by around 90 percent. That's big—the annual deaths on the world's roads are about 1.2 million a year. Pollution and carbon emissions will drop, because urban driverless cars will be electric.

    On the other hand, driverless cars will cause problems. Over the next 20 years, the mostly low-skilled men who now drive trucks, taxis and buses will see their jobs reduced. Traditional carmakers are especially scared. The cars of the future might be made by tech companies such as Apple, Baidu and Google. Imagine Germany, where automobile making is the largest industry.

    Dramatic changes are coming, and driverless cars could arrive by 2020. But governments have barely begun thinking about it. Only 6 percent of the biggest US cities have taken them into their long-term planning. A decade ago anyone hardly saw the Smartphone coming. Now what about the driverless cars?

    There is some unwelcome news for students preparing for exams and officers putting in long hours—you don't need that "refreshment (提神) break" as much as you may think.

    Scientists believed it was not easy for people to continue their work if they felt the need to have a snack or a rest to make them feel better. They argued that the only way to regain willpower is by supplying more energy to our bodies with rest, food or entertainment.

    But psychologists have challenged this theory, saying weak willpower is in your head. They found that a person's mindset (理念) and belief about willpower determine how long and how well they'll be able to work on a tough mental exercise. "If you think of willpower as something that's limited, you're more likely to be tired when you perform a difficult task," said Professor Veronika Job. "But if you think of willpower as something that is not easily depleted, you can go on and on."

    The researchers led by Mr. Job designed an experiment to test the students' beliefs about willpower. After a tiring task those who believed or were led to believe that willpower was a limited resource performed worse on standard concentration tests than those who thought of willpower as something they had more control over.

    Mr. Job said, "Students who may already have trouble studying are being told that their powers of concentration are limited, and they need to take frequent breaks. But a belief in willpower as a non-limited resource makes people stronger in their ability to work through challenges."

    The findings could help people who are battling with temptation (诱惑): people following strict diets and doing exercise regularly to lose weight, people trying to overcome addictions, employees facing a tight deadline. Willpower isn't driven by a biologically based process as much as we used to think.