When I was about 12, I had an enemy, a girl who liked to point out my shortcomings (缺点). Wee k by week her list grew: I was very thin, I wasn't a good student, I talked too much, I was too proud, and so on. I tried to hear all this as long as I could. At last, I became very angry. I ran to my father with tears in my eyes.

    He listened to me quietly, then he asked. “Are the things she says true or not? Janet, didn't you ever wonder what you're really like ? Well, you now have that girl's opinion. Go and make a list of everything she said and mark the points that are true. Pay no attention to the other things she said.”

    I did as he told me. To my great surprise, I discovered that about half the things were true. Some of them I couldn't change (like being very thin), but a good number I could—and suddenly I wanted to change. For the first time I went to a fairly clear picture of myself.

    I brought the list back to Daddy. He refused to take it. “That's just for you,” he said. “You know better than anyone else the truth about yourself. But you have to learn to listen, not just close your ears in anger and feeling hurt. When something said about you is true, you'll find it will be of help to you. Our world is full of people who think they know your duty. Don't shut your ears. Listen to them all, but hear the truth and do what you know is the right thing to do.”

    Daddy's advice has returned to me at many important moments. In my life, I've never had a better piece of advice.

    Scientists investigated why Ebola virus is so deadly when it spreads from animals to humans and then from human-to-human contact. The research team looked at the Zaire Ebola virus in an animal system to understand how it gains strength. This virus is responsible for the current outbreak in West Africa. They found that initially the animal systems were not affected by the virus, but succeeding transmission(传送) into other animals caused the virus to “hot up” and become more severe.

    The team analyzed the viruses at different stages and were able to identify several changes in its genetic material that were associated with increased disease.

    Professor Julian Hiscox, who led the study from the University's Institute of Infection and Global Health, explains: “The work tells us that the evolutionary goal of Ebola virus is to become more fatal.”

    “We were able to show through genetic analysis which parts of the virus are involved in this process. The information we have gathered will now allow us to monitor for such changes in an outbreak as well as develop future treatment strategies.”

    Professor Roger Hewson, leading the study from Public Health England, Porton Down, said: “Ebola virus is such a destructive infection to the people affected by the disease and the economy of West Africa.”

    “Our understanding of Ebola virus biology is way behind that of other viruses and our cooperation shows how we can bring together our specialists' skills to close this knowledge gap.”

    Professor Miles Carroll, a co-author of the work, said: “This study has allowed the team to be at the forefront of developing methodologies to analyze patient samples recently taken by the European Mobile Laboratory from West Africa to understand disease evolution during the current outbreak.”

    The average（平均的）American child spends three to five hours a day watching TV. In 1961, the average child began to watch television at age three; however, today it is nine months. Yet, most parents think that television has bad influence on their children. For example, in the early 1970s, my parents believed that my bad eyesight was the result of sitting too close to the screen, and they therefore made my stay at least six feet from it. Today, most people have no such worry, but many new ridiculous (荒谬的) sayings have appeared:

      *TV makes kids stupid. Many children watch more educational programs when they are pre-schoolers. When they grow up, they can read more books and have much better ideas to solve difficult problems than other children.

     *TV makes kids violent. The real story is not so simple. Hundreds of studies show that watching violence on TV makes children more aggressive (好斗的). But a study of over 5,000 children also finds that some positive programs make children kinder. The problem is that kids are increasingly watching shows with violence instead of those suitable for their age.

      *Sitting around watching TV makes kids overweight. An experiment finds that when children watch less television, they do lose extra weight; however, reducing their television time does not make them more active. The real problem lies in snacking (吃零食). A widespread habit for kids, and junk-food advertisements.

      *TV helps kids get to sleep. The opposite is true. The more television children watch, the more likely they are to have irregular sleep and nap (小睡) patterns. Allowing kids to watch television is part of the problem, not the solution.

    A handsome man can earn a fifth more than a plainer colleague (同事) but a beautiful woman is not paid a penny more than her average-looking colleague, new research has shown.

    The study by senior economists (经济学家) found that being good-looking meant male workers could earn 22 percent more than average-looking colleagues. Researchers said good looks did not give women a similar advantage.

    Andrew Leigh, the former economics professor at the Australian National University who co-authored the report, said: "Beauty can be a double-edged sword for women."

    "Some people still believe good looks and intelligence (智慧) are incompatible (矛盾的) in women so a good-looking woman can't be that productive, but it doesn't affect men's pay."

He said that although he believed good-looking women may also earn more, the research did not support his theory.

    The research found that handsome men in all jobs, from manual labour to highly-paid professional careers, can earn 22 percent more than their colleagues doing the same work.

    Men with below-average looks face a battle in the office, with ugliness reducing a man's earnings by 26 percent compared to an average-looking worker.

    Former male model Ian Mitchell, 28, who has a first class degree in history from Edinburgh University and now works for a cosmetics (化妆品) company, told the Sunday Times: "It gives you confidence, and I suspect people tend to warm to you more quickly."

    The study, named Unpacking the Beauty Premium, was the largest exercise of its kind and repeated a survey from 1984 to see if the beauty premium had changed.

    Leigh said the research showed people in the workplace were "lookist (以貌取人的) " and he hoped the findings would encourage employers to remove their prejudice(偏见).

    China will soon issue licenses for the commercialization(商业化) of 5G, as the country has already established(建立)a competitive advantage in the superfast wireless technology.

    The Ministry of Industry and Information Technology said 5G is entering a critical period of commercial deployment(部署)globally and China's 5G industry has established a competitive advantage through a combination of innovation(创新) and open cooperation.

    Many foreign companies, including Nokia and Intel, have participated in China's technical 5G tests. These foreign companies have already participated in three phases of tests organized by China to get their 5G products and solutions ready for commercial use in the country.

    "With joint efforts of all parties, China has built a foundation for commercialization of 5G," the ministry said, adding it will issue commercial 5G licenses in the near future, a clear sign China will soon officially enter the first year of 5G.

    China's big three telecom carriers are forecast to spend 900 billion to 1.5 trillion yuan ($134 billion to $223 billion) in total on 5G network construction from 2020 to 2025, according to a report from the China Academy of Information and Communications Technology. In comparison, Chinese telecom operators spent 720 billion yuan on 4G network construction from 2014 to 2018.

    In 2019, China Mobile plans to build 30,000 to 50,000 5G base stations this year, while China Telecom is looking to have 20,000.

    Zak's grandfather, Stan, was very famous. Why? Because he had a very, very, very long white beard(胡子).

    One day, Zak asked his grandfather, "When you sleep, do you put your beard over or under the quilt(被子)?" "I'm not sure. I never care about that," said his grandfather. "I'll look tonight."

    Stan got into bed that night and pulled up the quilt. Then he remembered his grandson's question. Aha! His beard was under the quilt. But wait. Did that feel right?

    He lifted his beard from under the quilt and put it above it. This also didn't feel right. So he put the beard under the quilt again. But he soon felt it would be better if it were out. The beard went in and out—first under the quilt, then over it, under, over, all night long.

    Stan spent a sleepless night. In the morning, he was so tired and unhappy that he cut his long beard right off!

    Stan's wife was so happy. She advised Stan to cut that beard off many times, but he never did it. Now a simple question made him do that.

根据上述内容，判断下列句子正误。