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.

    Chinese writers seldom win a big prize in the world. One of those prizes is the Hans Christian Andersen Prize, the highest honor in the world that can be given to an author and an illustrator of children's books. No Chinese writer had ever won it, until April 4, 2016, when 62-year-old Cao Wenxuan received the prize. Cao received the honor at the Bologna Children's Book Fair in Italy.

    Patricia Aldana praised Cao's “deeply humanistic” books. These novels admit that life can be sad for children.

    Instilling children with good virtues for the sake of humankind is something that Cao stresses. He said, “It's time for us to alter our understanding of reading. Books should bring not only joy to young readers, but also have their ideas about life.”

    That feature of his works has touched many adults too. “The common choice of the judges, Cao writes beautifully about the lives of children facing great challenges,” said Aldana.

    After his success, Cao praised good translation for bringing attention to his work. Chinese children's literature could get high honor in the world if it were correctly translated in a style that could be easily understood, he said.

    Other writers, including Jin Bo, have also blamed poor translation as the reason why Chinese literature fails to get honor in the world. Jin was named for the Hans Christian Andersen Prize in 1992, but at that time, he had to translate, in a hurry, several paragraphs from his book to give to the judges. "On one hand, the jury has little knowledge of Chinese authors. On the other hand, it is we ourselves who didn't introduce our work and promote (促进) ourselves enough," he said in a class in 2013.

    MySpace, the social networking website, is different from other websites which only provide stories about other people. MySpace is a place that allows you to broadcast your own stories and personal information to as many people as you like. Started two years ago, it is a big source of information for and about American kids.

    Teenagers and their parents feel very different about it. Teens are rushing to join the site, not sharing their parents' worries. It signals yet another generation gap in the digital era.

    For teenagers, it is reliable network to keep in touch with their friends. They will often list their surnames, birthdays, after­school jobs, school clubs, hobbies and other personal information.

    "MySpace is an easy way to reach just about everyone. I don't have all the phone numbers of my acquaintances. But if I want to get in touch with one of them, I could just leave them a message on MySpace, "said Abby Van Wassen. She is a 16­year­old student at Woodland Hills High of Pittsburgh, Pennsylvania.

    Parents on the other hand are seriously concerned about the security problems of MySpace. "Every time we hold a parents meeting, the first question is always about MySpace, "said Kent Gates, who travels the country doing Internet safety seminars(研讨会). The National Centre for Missing and Exploited Children has received at least 288 MySpace ­ related complaints, according to Mary Beth Buchanan, a lawyer in Pittsburgh.

    "Your profile on MySpace shows all your personal information to anyone on the Web. And MySpace even lists this information by birthplace and age. It's like a free checklist for troublemakers and it endangers children, " Buchanan said.

    Many doors close for those who have ever been in prison for a crime. It can be difficult for former prisoners to reenter society. A number of training programs are aimed at reopening doors for these men and women.

    "Together We Bake" teaches cooking and marketing skills to women who have spent time in prison so they can start new lives. It is a 10-week program which teaches women how to bake and sell cookies. Two friends, Tricia Sabatini and Stephanie Wright, created the program.

    "I have a background in social work and she is an amazing baker," Ms. Wright explains. "We discovered that for this population of women, returning from prison into the community, there aren't a lot of resources for them. So we thought we could combine our passions (激情) and develop this job as a training program. "Stephanie Wright says they started the program earlier this year." We had two classes so far that have graduated. This is our third class. We have eight women currently in this class. We've 16 women graduated in the first two classes."

    Terry Garred is one of the graduates. She says the program helped her turn her life around. Next she hopes to complete her high school studies. She is also working for "Together We Bake" to help other women follow the path she took.

    The program includes classes in which the women talk about their experiences and learn communication and job skills. Thirty-six-year-old Jamie White had spent three years in jail, which made her a little puzzled about her future life back into society. But she found those meeting were very helpful. She learned how to open up, and was just trying to better herself. She gained new skills. She sells baked goods at local markets every weekend now.

    Do you suppose Darwin, one of the greatest scientists of all time, really did foolish experiments? Or did he do experiments that were so simple and basic that other people just thought they were foolish?

    Sometimes, people think they already know the answer to a question or the solution to a problem. Sometimes, they really do know an answer or a solution, but without thinking they are important.

    Charles Darwin didn't settle for(满足于) just thinking he knew something. And, he believed all things could be important however simple they seemed to be.

    Suppose you drop sheets of paper that are of exactly the same size and shape. If you drop them at the same time in the same place, they will fall in the same way. Now make one of the sheets of paper into a tight little ball and let it drop along with the other sheets. What happens? You have done an experiment that is so simple that you might think it couldn't be worth anything.

    But this simple experiment is important. It explains part of our present-day understandings of physics, ideas that were worked out long ago by Galileo and Newton. And these understandings set aside some of ancient Greek physics.

    Scientists sometimes stop to look at very simple things and to think very hard about them. Even the simplest idea, which we might think is foolish, can shake the foundations of science.

    Mary Anning was an English fossil collector, dealer and paleontologist(古生物学家). Her fossil-hunting helped change the way people thought about the world.

    Mary was born into a poor family in England on May 21, 1799. She lived in the seaside town of Lyme Regis, in Dorset. The family had nine children. Only Mary and her brother Joseph grew up. Mary's father took his children along the beach. They picked up shells and stones to sell to visitors. Mary did not go to school much. Her family was too poor. And schools did not teach children about fossils. Mary could read and write. She taught herself. She learned about rocks and how bodies are made.

    In 1811 when Mary and Joseph were fossil hunting, Joseph saw a bone sticking out of the rock. Mary had a hammer to chip away at the rock. Very carefully she uncovered it. She found the first complete fossil of the ichthyosaur(鱼龙).

    Since then, Mary became crazy about fossil hunting. She liked to hunt on the beach after a storm. The wind, rain and waves made the rocks crumble. It was easy to spot fossils. Most days Mary went fossil hunting with her dog, Tray.

Rich friends helped Mary by selling fossils for her. They sent her money. Scientists wrote letters and came to see her. One good friend was William Buckland, a professor at Oxford University. Mary also opened a shop to sell fossils, stones and shells. She chatted with visitors.

    Mary Anning died in 1847. How evolution(进化)works was explained by Charles Darwin not long after Mary died. Her fossils had helped scientists understand how things began.