Although one might not think so as a result of the disadvantages, thousands and thousands of ads have shown advertising is of great importance to the society in which people live, either in the United Kingdom, or in many other parts of the world .Advertising is necessary as a means of communicating with others, of telling them about the goods and services that are offered, and of which most of them would never get to hear at all if it were not for advertising. And advertising does a great deal to a rising standard of living conditions.

    In talking about advertisement, one should not think only a commercial on television, or an advertisement in the newspaper or magazines and—in the sense of communication—even the spoken or written words of salesmen. After all, the roots of advertising are to be found in the market place in the ancient times.

    For many years it was thought that it was not enough to just produce goods and supply services. It is only more recently that people came to understand the production of goods would be a waste of resources unless those goods can be sold at fair price within a reasonable time period. In the competitive society in which we live, it is very important that we go out and sell what we have to offer, and advertising plays an important part, whether selling at home or in export market. Around 2 percent of the UK national product is spent on advertising. But it must be thought that this advertising tries to sell goods to customers who do not buy them. Of course, advertising does try to catch the eyes of the buyer, but if the product one has bought does not match what the advertisement had described, it is extremely unlikely that the goods will sell well.

    Feifei, an 11-year-old boy from Xuzhou, Jiangsu Province, suffered from a sudden acute eye disease which has almost led to blindness. The disease was caused by excessive（过度的）eye fatigue（疲劳）during the winter vacation, during which he played computer games for continuous 10 days and nights.

    Many youngsters in China nowadays are increasingly addicted to computer games and other electronic products. This is followed by a series of health problems, with the most typical case being myopia, or nearsightedness.

    According to the latest research report released by the World Health Organization (WHO),the myopia rate among Chinese teenagers ranks first in the world—70 percent of high school and college students. The rate is nearly 40 percent in primary school students, while it is only 10 percent for their peers in the United States.

    There are at least 10 million people in China with severe myopia, and they are likely to get pathological（病理性的）myopia in middle age. Pathological myopia can't be treated with glasses or surgery, and it is one of the biggest factors that lead to blindness, Xu Xun, director of the ophthalmology（眼科学）department at Shanghai General Hospital, pointed out.

    Experts explain that two major factors lead to the high rate of myopia among Chinese people. One is high academic pressure, and the other one is excessive use of electronic devices over a long period of time .Genetics, on the other hand, are not the main reason, as only 20 percent of Chinese people had myopia in the 1960s.

    "Teenagers are now faced with severe academic pressure, which means they often study without natural light. This increases their risk of becoming nearsighted," Xu said.

    Experts suggest that youngsters maintain a proper balance between study and rest so as to protect their eyesight, and parents should play an active role in the process.

    I think a close friend is someone you get on well with, who helps you when you have problems, who gives you advice, and who always has time for you. I didn't use to have many close friends when I was at school because I was very shy, but now I have several. They are all women. I think it's difficult to have a close friend of the opposite sex（异性）.

—Marie

    I think a close friend is someone who you've known for a long time, and who you still get on with. They have similar hobbies to you so you can do things together. I've got three close friends who I was at middle school with and we often go out together （without our parents of course）. We often go camping, play football, or walk outside in the open air.

—David

    I'm not sure how to answer the question because I don't really have any close friends. I know a lot of people but mainly through work, and the social occasions（场合） when we meet are business dinners, things like that. I think if you come from a really close family, friends are a bit unnecessary. I like spending my free time with my family.

—Richard

    For me close friends are the people you spend your free time with. I go out at weekends with a group of people, and they are all my close friends. They're also people who live near me. I don't think you can have close friends at a distance because you need to be able to see each other often. But I don't think you need to be doing the same things. I mean I'm at school but none of my friends are.

—Anna

    Have you ever thought of quitting your job when you feel exhausted? Maybe most of you would say "yes". After a particularly busy period at work, I decided to get away from it all by going on a hike in the mountains in southern France.

    Before I left, I read an interesting story in a magazine. It read, "Once, while I was riding on a crowded bus, the man sitting next to me threw his cell phone out of the window when his phone rang. I was surprised. He looked at me, shrugged (耸耸肩) and looked away. I had no idea whether it was his or stolen or whether he even knew what a cell phone was or not, but he clearly wanted to be free of it, because it clearly troubled him."

    Billions of people across the world use cell phones. Though cell phones are a wonderful way for communication, they often do the exact opposite. Using cell phones can increase stress within families and friends.

    So when I recently returned home, I got rid of my cell phone. Now I go outside without taking my phone with me. I've noticed things in my neighborhood I never noticed before, such as gardens. I've met new people, started conversations with neighbors I didn't speak to before and talked with some of my friends face to face instead of chatting over the phone.

    Instead of keeping me off from the world, stopping using my cell phone has helped me get even closer to my family and friends.

Everyone has a phone in their pocket nowadays, but how often do we really use them for their original purpose-to make a call? Telephone culture is disappearing. What brought us to this moment, and what are its effects?

"No one picks up the phone anymore," wrote Alex C. Madrigal on The Atlantic. The reflex of answering-centu20^th—telephonic culture—is gone."

The shift is of course due in large part to more communication options: Texting with photos, videos, emojis, reaction gifs, links and even voice messages can be a more attractive option.

Texting is light and fun, not nearly as demanding of your attention as a phone call. It can also be done with multiple people at the same time. Social media, email and video calls have also eaten away at traditional phone calls.

In recent years, another reason has caused people to ignore phone calls completely: robocalls. Robocalls are automate messages from organizations verifying your phone number or telemarketers trying to sell something. Americans received 22.8 billion robocalls halfway through 2020, equaling an annual rate of 45.6 billion, slightly below 2018 numbers, according to YouMail, a robocall protection service and blocking app.

As telephone culture disappears, what is the loss of a singular family phone doing to the family unit? Early landline phones unified family members, whereas mobile phones isolate them.

"The shared family phone served as an anchor for home," said Luke Fernandez, a Weber State University computer-science professor and co-author of Bored, Lonely, Angry, Stupid: Feelings About Technology, From the Telegraph to Twitter. "With smartphones we have gained mobility and privacy. But the value of the home has been diminished, as has its ability to guide and monitor family behavior and perhaps connect families more closely," Fernandez said.

Of course, as technology progresses, lives always change for better or for worse. With the loss of telephone culture, families will need to find other ways to unite.

The Ebola virus is an infectious disease that for years had almost no treatments, and it kill s about half the people it infects. Now a new study published in The Lancet Infectious Diseases shows that a promising vaccine （疫苗）, named rVSV△G-ZEBOV-GP, doesn't just help to reduce infections, it also can cut those death numbers in half.

The vaccine is a single-dose （单剂） muscular one that causes cells to produce one of the virus's proteins. "Later, if the person is exposed to Ebola,"explains Rebecca Coulborn, a scientist with Epicentre, the medical research arm of Doctors Without Borders, "their immune system will recognize the viral protein. This recognition allows the immune system to be prepared to attack the virus and protect the person from Ebola virus disease."

Researchers showed rVSV△G-ZEBOV-GP was effective at reducing the risk of infection, but no one knew how capable it was of preventing death in someone who was vaccinated after becoming infected during an epidemic （流行病）. To figure it out, Coulborn and her colleagues focused their efforts on the second-largest Ebola outbreak ever recorded, which occurred in the Democratic Republic of Congo between 2018 and 2020.

"Every single Ebola health facility across the entire Ebola epidemic had a standardized list of all admissions," says Coulborn. This list included 2,279 confirmed Ebola patients, and it recorded whether or not each person had been vaccinated before they got sick—and if so, when they'd received the vaccine.

Coulborn found the death rate was 56% among the unvaccinated. But for those who'd received the vaccine, that rate was cut in half. This was true no matter when someone got vaccinated before the appearance of symptoms. Additionally, those who'd been vaccinated had less virus circulating in their bodies than those who hadn't. So the vaccine played an important role.

Rebecca Coulborn says she feels buoyed by the results—since they offer clear evidence that people who're at risk of contracting Ebola should be vaccinated early. It's an opportunity to cut chains of transmission （传播） and prevent an outbreak before it gains speed.