Types of Fire Extinguishers

    Fire extinguishers are marked according to the kind of fore on which they should be used. Using the wrong type of the extinguishers can be dangerous and make things worse.

    Type A extinguishers are used for fires on paper, cloth, wood, rubber, many plastics and so on. These types of fires usually leave ashes when they burn, so use Type A extinguishers for fires that leave ashes.

    Type B extinguishers are used for burning liquids, such as oil, gasoline, and paints. These substances often come in barral-shaped containers, so use Type B extinguishers for such barrals.

    Type C extinguishers are used for electrical fires Electricity travels in a circuit, so use Type C extinguishers for circuits.

    Remember, A is for Ashes, B is for Barrals, and C is for Circuits. Make sure you have the correct type of fire extinguisher, learn PASS. PASS stands for Pull, Aim, Squeeze, and Sweep.

    Pull the pin at top of the extinguisher cylinder（灭火器圆筒）.

    Aim the nozzle（喷嘴）at the base of the fire.

    Squeeze or press the bandle.

    Sweep the sprary from side-to-side at the fire's base until it goes out.

Importance of College Education

    During the high school career, students may begin to question the importance of a college education. They might find themselves asking, “Why is it important to go to college?” The answer is that, more than ever, college graduates enjoy much greater opportunities available to them than those who have not received a college education.

    For many high school students, being able to immediately generate an income after graduation is an appealing thought. They may also be affected by the rising cost of tuition, and while it is true that a higher education may be one of the largest expenses you will ever face, the importance of a college education has become quite evident in terms of earning potential within today's economy.

    Why should you go to college? One important answer to this question is more opportunity. As opposed to generations of the past, high school graduates today are unable to obtain high-paying jobs that were once available. The U.S. has been transformed from a manufacturing-based economy to an economy based on knowledge, and the importance of a college education today can be compared to that of a high school education forty years ago. It serves as the gateway to better options and more opportunity.

    There are additional reasons as to why it is important to go to college. When students experience a post secondary education, they have the opportunity to read books and listen to the lectures of top experts in their fields. This encourages students to think, ask questions, and explore new ideas, which allows for additional growth and development and provides college graduates with more opportunities in the job market over those who have not experienced a higher education.

    The importance of a college education is also stressed because of the opportunity to gain valuable resources during the study. The more connections which are collected during your college career, the more options you will have when you begin your job search. Once you have ended your job search and have started your career, however, the importance of a college education has not been exhausted. Having a college degree often provides for greater promotion opportunity.

    So, why should you go to college? The reasoning does not begin and end with the job aspect. A good education is beneficial from many different viewpoints, and though the importance of a college education is quite evident for many high school students, what is often not as clear is how they will pay for that education.

    A few days ago my wife sent me out to buy something. When I came home, I handed her a paper bag and said, "Here are the apples you wanted." She looked in the bag, and then she looked at me. "I told you," she said slowly, "to buy some eggs."

    I felt worried about my absent-mindedness (心不在焉，健忘) , so I went to see a doctor. He was a very kind man. "I have seen many people like you. It's nothing to worry about," he said. "If you know you are absent-minded, you are all right. But if you do not know you're absent-minded, you may be really in trouble."

    "Many famous people were absent-minded," the doctor told me. "Thomas Edison was standing in line one day to pay his taxes. When he arrived at the window, he found that he had forgotten his own name. He had to ask the man who was behind him to tell him who he was."

    I felt much better and got up to leave. "Thank you, doctor," I said. "How much do I have to pay you?"

    "Ten dollars for the check-up," the doctor said.

    "But doctor, I did not have a check-up!"

    For a moment the doctor looked puzzled. Then he said, "Oh, yes, it was the patient before you who had a check-up. How absent-minded I am!"

    Many high school students consider a college education useless. Therefore, they choose not to go to college. If you're one of them, think again. Here are some reasons why you should go to college and receive a good education there.

    Schools and universities are the first sources of knowledge. We take that knowledge later on to build our careers after graduation. More knowledge will be gained after you start working, but without an education, that job will not be within easy reach. Knowledge leads to knowledge.

    While limited within the walls of the educational institutions, we openly explore other cultures of the world. We come to know that ours is not the only culture. Other cultures have valuable insights to share, enriching our own. Education also makes us want to travel and interact with various cultures, broadening our horizons.

    When there's a downturn (衰退) in the economy, those who attended college will be more likely to find a new job than those who only finished grade school and have a limited skills set. The more education you have, the more chances you will get to improve the quality of your life as you have a better job and earn a higher salary.

    When you're skillful and knowledgeable, you get to “rub knees” with people of similar backgrounds and tastes. It means a good education leads to excellent networking. Good networking can benefit you a lot in your later life.

    A good education makes you a more interesting person. You can talk about ideas and events instead of just other people and what's on sale in stores. An educated person doesn't gossip, having a preference to discuss ideas and listen to what other people have to say.

    Should Parents Teach Children How to Tweet?

    Social media is a seemingly endless source of concern for parents, with worries that it weakens their children's confidence and attention spans. But others counter that it could also be broadening their horizons.

    The latest round of worry was sparked by a study of the impact of social media use on 8-12- year-olds published by Anne Longfield, Children's Commissioner for England. The report focused on 32 children, who said they used social media to stay connected with friends and family and to have fun, by watching videos for example. But they also described pressures from constant contact, online comments that weaken their self-esteem, and the need to shape offline activities to make them shareable. "You see your friends going ice skating, partying or talking about how much revision they have done, and it can make you feel inadequate," says Bea, a junior school student from Bristol, UK. "It's just so hard to get away from."

    Children have to take risks on their journeys to adulthood, and desires to fit in and be popular existed before Mark Zuckerberg came along with Facebook. However, in previous generations these pressures came largely from people they knew, and they mostly stayed outside the home. Now the pressures could come from any one of the nearly 3 billion people online, and follow them from school to home, and can even continue through the night.

    The pressures do get on parents' nerves, among which the utmost concern is how their children can be protected from harms, given that social media is now integral to the way many young people interact. A good starting point is a basic understanding of childhood development milestones.

    Broadly, children have a high dependency on carers for security and guidance up to the age of 5, increasing independence and self-care from 6 to 11, and increasing autonomy and growing reliance on peers from 12-18 years old. Against this background, the suitability of social media for children of different ages should be considered respectively.

    According to Longfield's study, children should be taught about online safety from an early age, better before secondary school. There is growing evidence that efforts need to be extended to provide earlier guidance on less extreme but more common risks, including oversharing, low selfesteem, addiction and insomnia. The evidence suggests she is right. However, approaches that focus merely on the potential negatives are unlikely to work.

    "My school has tried to do a lot, but it often involves trying to drill into us how bad social media can be," says Bea. "People of my age really like social media, so I think a better approach would be if they said ‘Although it is good, here are some negatives'."

Simply being quiet is a growing appeal. Lots of business have appeared to meet a rising demand for quiet time, from silent weekend getaways to silent dining, silent reading parties and even silent dating. Silence can mean different things to different people. We are usually silent only with those closest to us. So there is something almost radical(不同凡响的)about the recent trend towards enjoying silence with strangers.

Mariel started a regular silent reading party in Dundee just under a year ago. Readers bring their books and meet in a bar, where they read together in silence for an hour or sometimes two and then put their books away to chat and have a drink. "When the reading party starts, everything goes quiet," says Mariel," It's a little bit surreal (超现实的), especially in what is usually a noisy bar. However, there is something special about sharing the silence with others. It offers a chance to escape from reality; everyone is so busy with work and with technology being ever present. An event like this gives people the opportunity to escape these things for a while."

Honi Ryan is an artist based in Berlin who began hosting silent dinner back in 2006. The rules of the dinner are: no talking, no using your voice, no reading or writing, trying to make as little noise as possible, not connecting with technology, and staying for at least two hours. So far she has taken her silent dinner project to Mexico, the US, Australia and China. "It's evident that the age-old connections we make over food do not depend on the words around it. Silence creates the space for the people and places involved to fill with whatever is needed; it is quite different from our usual social behaviors."