Johnny Smith was a good math student at a high school. He loved his computer. He came home early every day, then he worked with it till midnight. But Johnny was not a good English student, not good at all. He got an F in his English class. One day after school Johnny joined his computer to the computer in his high school office. The school office computer had the grades of all the students: the math grades, the science grades, the grades in arts and music, and the grades in English. He found his English grade. An F! Johnny changed his English grade from an F to A. Johnny' parents looked at his report card. They were very happy.

    "An A in English!" said Johnny's Dad. "You're a very clever boy, Johnny."

    Johnny is a hacker (黑客). Hackers know how to take informationfrom other computers and put new information in. Using a modem, they join their computers to other computers secretly. School headmasters and teachers are worried about hackers. So are the police, for some people even take money from bank computer accountand put it into their own ones. And they never have to leave home to do it! They are called hackers.

    Having a smart phone may not be as smart as you think. They may let you surf the Internet, listen to music and take photos wherever you are…but they also turn you into a workaholic（工作狂）,it seems.

    A study suggests that, by giving you access to emails at all times, the smart phone adds as much as two hours to your working day. Experts found that British people work an additional 460 hours a year on average as they are able to respond to emails on their mobiles. The study shows the average UK working day is between 9 and 10 hours, but 2 more hours is spent responding to or sending work emails, or making work calls.

    Almost one in ten admits spending up to three hours outside their normal working day checking work emails. Some workers say they are on call almost 24 hours a day. Nearly two-thirds say they often check work emails just before they go to bed and as soon as they wake up, while over a third have replied to one in the middle of the night. The average time for first checking emails is between 6 a.m and 7 a.m, with more than a third checking their first email in the period, and a quarter checking them between 11 p.m.and midnight.

    Ghadi Hobeika, marketing director of Pixmania, said: “The ability to access millions of Apps has made smart phone invaluable for many people. However, there are disadvantages. Many companies expect their employees to be on call 24 hours a day, seven days a week, and smart phones mean that people cannot get away from work. The more frequently in contact we become, the more is expected of us in a work capacity.”

    According to the Associated Press (AP), a Chinese scientist claims he successfully created the world's first genetically-edited babies.

    Chinese researcher He Jiankui, a research professor at China's Southern University of Science and Technology in Shenzhen, said he had edited DNA of twin girls born a few weeks ago. ①

    He's claims were immediately criticized by some scientists as unsafe and unethical. This kind of gene editing is forbidden in the United States and many other countries. ②Such changes to a person's DNA can pass to future generations and risk harming other genes.

    In interviews, He Jiankui defended his work. He said he had performed the gene editing to help protect the babies from future infection of HIV, the virus responsible for the disease AIDS. He said the process had “worked safely” and the twin girls were “as healthy as any other babies.” He told the AP he felt a strong responsibility “not just to make a first, but also to make an example” for future research. “Society will decide what to do next,” he said.

    When He's claims became public, the university made a statement saying his work had “seriously went against academic ethics and standards.” University officials said they had no knowledge of his research and had looked into the case. ③

    China's National Health Commission was “highly concerned” about the claims and ordered local health officials “to immediately look into” He's activity. “We have to be responsible for the people's health and will act on this according to the law,” the commission said.

    Scientists discovered in recent years a new way to edit genes that make up a person's DNA throughout the body. The tool, called CRISPR-cas9, makes it possible to change DNA to supply a needed gene or take one away that is causing problems. So far the tool has only been used on adults to treat deadly diseases, and the changes only affected that person.

    ④Kiran Musunuru, a scientist from University of Pennsylvania, told the AP that if such an experiment had been carried out on human beings, it could not be “morally or ethically reasonable.” Julian Savulescu, a medical ethics expert at Britain's University of Oxford, agreed. “If true, this experiment may cause disasters,” he told Reuters.

    However, one well-known geneticist, Harvard University's George Church, defended the attempt to edit genes to prevent infections of HIV. He told the AP that since HIV is “a major and growing public health threat” he finds such experiments “valuable.”

    Below is a web page from http://www.parents.com/ .

    Kid of the Year Photo Contest

    Enter your kid's photo today and win! We're giving away 52 weekly $250 prizes from Readers' Choice votes. PLUS our editors will select one entry (参赛作品) to win our grand prize of $7,000.

    Official Contest Rules

    No purchase necessary to enter or win. The Kid of the Year Photo Contest entry period begins at 12:00 a.m. March 23, 2019, and ends on January 21, 2020 (the “Entry Period”). Entries must be received by 9:00 p.m. on January 21, 2020 (“Entry Deadline”). Entries will not be acknowledged or returned.

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    ENTRY: There will be two methods of entry.

    Share My Entry:

    Visit http://www.parents.com/photos/photo-contests-1/kid-of-the-year/ and click the button to enter. Then complete the registration form and follow the instructions to upload one album of up to six photos of your child aged three months to eight years. Photos must be taken by entrant, non-professional, unpublished and may not have won any prize or award. Photos must be .jpeg or .bmp image formats (格式) and cannot exceed 3 MB.

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    Visit Facebook.com/ParentsMagazine and click the Kid of 2019 tab. Fill out the registration form and upload one album of up to six photos of your child aged three months to eight years. You may provide one description and one album title that will be applied to all photos. Photos must be taken by entrant, non-professional, unpublished and may not have won any prize or award. Photos must be .jpeg or .bmp image formats and cannot exceed 3 MB.

    This promotion is in no way sponsored, supported or run by, or associated with Facebook. You are providing your information to Parents Magazine and not to Facebook. The information you provide will only be used to run the promotion and register for Parents.com.

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    LIMIT: One entry per household, per eligible (有资格的) child, per week. One weekly prize per child. For entries of more than one eligible child in the household, the entry process must be completed separately for each child. No group entries.