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.

Uncivilized behavior by passengers unacceptable

    For the first time, airline passengers have been blacklisted for uncivilized behavior. Their names will remain on the blacklist for one or two years, according to an announcement by the China Air Transport Association on Saturday. The blacklisting means they will not be able to travel by air until their names are removed from the list.

    Blacklisting passengers who disobey the rules for traveling by air and so place their own interests before everything else, including safety, has long been overdue (迟到的，延迟的).

    There have been frequent reports of passengers making a scene when their flight was delayed or when they believed that they were not treated as they should be on a flight.

    Yet it is natural for some flights to be delayed because of reasons such as bad weather or mechanical problems that need to be solved. However, some passengers seem to take it for granted that their flight must take off at the time stated on their ticket, and they even assume that the members of the cabin crew are simply there to do their bidding(吩咐).

    They forget that they should behave themselves in the first place and that respect is reciprocal (互相给与的).There is no reason for them to be respected when they do not show enough respect for others.

    Observing rules can never be over-emphasized when it comes to flight safety. No one has the right to disregard the rules for any reason. Of course, airlines should provide quality services to meet the needs of passengers. Yet, even if passengers are not satisfied with the service provided, there is still no reason for them to flout the rules that are designed for the safety of all.

    The blacklisting of these three passengers should serve for others to know they have to toe the line (顺从集体).

    When you travel in other countries, you'll have to get yourself well prepared to ensure your safety and handle emergencies.

Before you leave, you'd better:

1). Take out medical insurance policy and learn what the plan covers and whether departure or return to the hometown is covered. Figure out payment choices, such as whether you have to speak directly with the insurance company, before or after treatment, whether you have to pay first and get compensation later.

2). Keep up to date on all required vaccinations (接种疫苗) .

3). Learn about the city or area where you are going to travel. Know how to say street names and landmarks in the local language. Figure out unique climate issues such as altitude, seasonal changes, potentially risky animals and insects.

4). Visit some local hospitals and write down addresses in the local language along with emergency entrance locations; do the same for dental/pediatric (小儿科的) services. Get first aid equipment with necessary medications. Take enough prescribed medication from the home country.

5). Carry a card or note written in both English and the local language listing your emergency contact numbers, name, basic medical information such as blood type and allergies (过敏) .

6). Ensure a reliable means of communication is available and carry an extra phone battery and a charger. Ensure that housemaids, drivers, office assistants, those who work or travel know how to call for medical assistance since they may be the only ones available in an emergency.

7). Make sure to bring all documents and visas along with you. Plan your journey carefully and carry copies of documents (ID, insurance policy records, medical records) and keep in a place where someone else could access them in an emergency.

    "If you want to see a thing well, reach out and touch it!"

That may seem a strange thing to say. But touching things can help you to see them better.

    Your eyes can tell you that a glass ball is round. But by holding it in your hands, you can feel how smooth and cool the ball is. You can feel how heavy the glass is. When you feel all these about the ball, you really see it. With your skin, you can feel better. For example, your fingers can tell (辨别) the difference between two coins in your pocket. You can feel a little drop of water on the back of your hand, too. You can even feel sounds against your skin. Have you ever wanted to know why some people like very loud music? They must like to feel the sounds of music.

    All children soon learn what "Don't touch!" means. They hear it often. Yet most of us keep on touching things as we grow up. In shops, we touch things we might buy: food, clothes. To see something well, we have to touch it. The bottoms of our feet can feel things, too. You know this when you walk on warm sand, cool grass or a hard floor. All feel different under your feet.

    There are ways of learning to see well by feeling. One way is to close your eyes and try to feel everything that is touching your skin. Feel the shoes on your feet, the clothes on your body, the air on your skin. At first, it is not easy to feel these things. You are too used to them!

    Most museums are just for looking. But today some museums have some things to touch. Their signs say, "Do touch!" There you can feel everything on show.

    If you want to see better, reach out and touch. Then you will really see!

Great women

    When it comes to changing the world, these women have invented, researched and collected their way to a place in scientific history.

    Hedy Lamarr

    More widely known as a Hollywood star during the 1930s and 1940s, Hedy Lamarr（1914－2000）was much more than a pretty face. After her home country Austria was taken over by the Nazi, highly intelligent and fearless, Lamarr worked with scientist and inventor George Antheil to develop a secret communication system. Without her work, wireless（无线的）technology as we know it today would not exist. Today she is considered as the mother of WiFi.

    Ameenah Gurib-Fakim

    Ameenah Gurib-Fakim was born in 1959 in Mauritius, the country for which she now serves as the first woman president. She is a scientist who has spent many hours researching the local plants of Mauritius and their values as medicine. She has held many high positions in the fields of both politics and science and was awarded（授予）the 2007 UNESCO Award for Women in Science.

    Mae C. Jemison

    On June 4,1987, Mae C. Jemison became the first African-American woman to enter the space program. On September 12,1992, she joined several other astronauts on the Endeavour, becoming the first African-American woman in space. Born in Decatur, Alabama in 1956 and raised mostly in Chicago, Jemison holds many awards and degrees, As a child, Jemison spent a lot of time in her school library ,reading especially books space.

Chinese delivery driver, Gao Zhixiao, was featured on the cover of Time magazine in March because of his sense of commitment. Alongside five others, he was picked by the magazine as one of heroes among the novel coronavirus outbreak.

Ever since COVID-19 broke out, many restaurants shut down or switched to takeout-only services. Millions of people have been staying at home to avoid getting infected. "People choose to order food online or buy fruit and vegetables to cook at home," Gao told Time. As a result, delivery orders dramatically increased, placing a huge burden on delivery company.

Born into a poor family in the Ningxia Hui autonomous region, Gao started to make a living in Beijing at age 16. After the novel coronavirus broke out, Gao hesitated for a second to continue working, but then picked up orders because he thought customers might be in need.

Due to the danger of person-to-person transmission, Gao must take care to avoid spreading viruses during his route around Beijing, including taking a regular health test and spending 20 minutes disinfecting his motorcycle and clothes each morning. Besides delivering goods, Gao once willingly cooked for an elderly customer who was living alone at her home.

It is the commitment of ordinary people like Gao that has made the biggest contributions in the fight against COVID-19.