Taking good notes is a time-saving skill that will help you to become a better student in several ways.{#blank#}1{#/blank#}Second, your notes are excellent materials to refer to when you, are studying for a test. Third, note-taking offers variety to your study time and helps you to hold your interest.

    You will want to take notes during classroom discussions and while reading a textbook or doing research for a report.{#blank#}2{#/blank#}Whenever or however you take notes, keep in mind that note-taking is a selective process.{#blank#}3{#/blank#}The following methods may work best for you.

    ●Read the text quickly to find the main facts arid ideas in it.

    ●Carefully read the text and watch for words that can show main points and supporting facts.

    ●Write your notes in your own words.

    ●{#blank#}4{#/blank#}

    ●Note any questions or idea you may have about what was said or written.

    As you take notes,you may want to use your own shorthand（速记）.When you do,be sure that you understand your symbols and that you use them all the time{#blank#}5{#/blank#}

A. Use words, not complete sentences.

B. There are three practical note-taking methods.

C. You must write your notes on separate paper.

D. Otherwise, you may not be able to read your notes later.

E. You will also want to develop your own method for taking notes.

F. That means you must first decide what is important enough to include in your notes.

G. First, the simple act of writing something down makes it easier for you to understand and remember it.

    Radar（雷达） is an electronic device that detects planes, ships, coastlines, landmarks, and even storm clouds. The name radar comes from the first letters of the words radio direction and ranging. As the human eye uses light waves to see, radar “sees” with radio waves. Without radar, planes could not land safely in bad weather and ships could not move safely in thick fog{#blank#}1{#/blank#}

    In the 1800s it was discovered that radio waves could be reflected from objects. But scientists did not make great advances in radar research until the 1930s, when the world was threatened by war{#blank#}2{#/blank#}It has been used widely in almost every conflict since then.

    Echoes make it possible for radar to work. When a beam of radio waves is sent out, it strikes on an object and returns an echo. This echo is picked up by radar and recorded on a screen similar to television screen. On the screen an observer sees a flash, or a blip, that shows the direction and distance of the object{#blank#}3{#/blank#}

    Airport control towers use radar to guide planes in for safe landings. Almost all large ships depend on radar to prevent collisions with icebergs or other ships{#blank#}4{#/blank#}Weather forecasters “see” the size, direction, and speed of storms on radar screens. Astronomers can even use radar to measure accurately the distance to the moon. Thus, the device has generated major advancements.

    {#blank#}5{#/blank#} Huge radar antennas have been installed all over the United States. They guard us against possible enemy attacks. We have ballistic—missiles (战略导弹)warning systems that can alert us to attacks when missiles are more than 1,000 miles away. Other radar systems warn us against enemy aircraft and even spying space satellites.

A. Police track speeders in radar-equipped cars.

B. These measurements are now highly accurate.

C. The device can be used in a wide range of fields.

D. During World War II many countries used radar effectively.

E. It is therefore especially valuable to shippers and travelers.

F. Today radar is used by commercial airliners and weather forecasters.

G. Strengthening national defense is one of radar's most important functions.

    All company leaders will face major business decisions throughout their time as the heads of their organizations. Difficult decisions related to activities such as M&A, leadership changes, restructuring, and massive growth plans will directly impact the company's employees.

    If you've already established trust with your workforce, you can significantly minimize potential negative impacts and make sure your employees will buy into your decisions, even if they don't necessarily agree with them. But earning their faith takes time. As a leader, you are trusted only to the degree that people believe in your ability, consistency, and commitment to deliver. The good news is that there do exist some strategies to help you earn confidence.

    Instill trust through an employee engagement program

    By encouraging consistent feedback and establishing an honest environment, employees will trust the direction and information you give them. Create a highly engaged culture by prioritizing real-time recognition, continuous feedback, and ongoing goal-setting.

    Change and react with meaningful conversations. You've likely had to adjust your business plan in the middle of the year. Real-time, continuous communication helps you keep employees in the loop and adjust to expectations as your organization's needs change.

    Giving timely feedback is the most effective way to communicate expectations. Not only that, but saving your big praise until the end of the year isn't just ineffective—it makes it more difficult to deliver.

    Ongoing goal-setting can help people understand where their contributions fit within the organization and where they need to aim. Better yet, these can be transparent across the organization so everyone is held accountable for the outcomes and behaviors that drive your business and cultural success.

    Gather and measure sentiment (情感) during times of change

    Part of the difficulty in making tough business decisions is that leaders don't want to surprise or disappoint employees. Think about the last time you made a major company-wide announcement. Did you know if employees were happy? Were they shocked? Or even worse, did you have no insight into their reactions at all? If you regularly measure employee sentiment through real-time pulse surveys—especially during times of change—you can more accurately pinpoint reactions and cope with issues immediately. The results of these pulse surveys empower your leadership team to be more forthcoming, moving forward, earning the trust of employees and strengthening a transparent company culture.

    If there is a strong link between employees and managers to the goals of the organization, the vision and values of the company will be embraced by all.

    At the end of the day, the mindset shouldn't be about how you can make tough decisions easier, but how you can make those decisions in a way that won't negatively impact your employees or your organization's objectives. Create a cooperative feedback culture, and when the time comes to make difficult decisions, you know that with your team's insights in mind and trust in the leadership, the decision will be accepted willingly.

    Asthma(哮喘) is a long-lasting breathing disease that affects millions of Americans, many of whom are children. People who get asthma will suffer from lack of breath, difficulty in breathing or coughing--which are caused by the tightening of the muscles in airways. Untreated asthma can lead to poor lung function and death, but asthma can also be effectively controlled with proper treatments.

    Research is discovering genes that contribute to the development of asthma. This development has pointed researchers to the role of indoor and outdoor pollution as environmental factors that contribute to the increased occurrence of asthma.

    The Indoor Pollution

    Indoor pollution has increased with the developments in building materials and in heating and air conditioning systems. In addition to poisonous gases that come from paint, other materials like dust and perfumes used in household products such as washing powder are recycled continuously through the house, winter and summer.

    Unlike the days before central heating or before whole-house air conditioning, these materials and chemicals cannot get out of modern homes. Most often, they cause breathing problems in the members of the family with the least-developed autoimmune(自身免疫的) systems. Proper venting (通风) and use of environmentally-friendly building materials and carpeting can help reduce the presence of these chemicals.

    The Out door pollution

    Researchers have also established outdoor pollution's role as a probable cause of asthma. Asthma has been proven to result from some fuel products. Smog and the small matters carried by it have been recognized as a factor which leads to asthma since the 19th century when London saw more and more diseases in the industrial population. Industrial pollutants and other chemicals which are produced in water treatment and open treated water like that found in the swimming pools also contribute to increased cases of asthma as well as other illnesses.

    Those most affected by the increase of industrial and environmental pollution are children. Although much has been done to control the levels of pollution in the US, there still remains much to do as it is a worldwide phenomenon. Until an international effort can be made to limit carbon emissions, the occurrence of environmental asthma will probably continue to increase.

    My dad is a kind, gentle man, and a man of few words. Throughout my life, he offered advice rarely. But the words were always appropriate to the situation I was facing.

    As a teen when I struggled with making sense of the world around me, he said, “All things are relative.” He taught me the right view of the world. When I was offered the opportunity to be a manager of an organization as an undergraduate student, I asked him for advice because he was a senior manager of a large company. His advice was simple, “Only when you become the manager can you have a vision for how you can make the organization better; management isn't about power and it's about leadership.” I learned what I needed was not only to be responsible for my team but also to have leading ability. When I was feeling down, he explained, “Think that you make the wrong choices in life, sometimes.”

    My dad is 86 now, living on his own and enjoying life while struggling with the challenges that aging brings. He keeps a positive attitude despite long pain and the losses that come in life. Although we live quite far away from each other, we talk daily on the phone, and he shares the joys of my young family. As I tell him how we're heading off cycling or on a trip or out to play tennis, now his typical response is, “Do it while you can.” This is very important. We can't be sure of the future. My father's advice is like the ancient dictum（格言）of “ carpe diem”— seize the day and enjoy it to the fullest.

    My dad rarely “lectured me”. He trusted me, and helped me when I needed help. His patience and wisdom have been true gifts in my life. As I doubt my ability and my motivation, I recall his most recent gift of wisdom, “Do it while you can”. It's enough to “just get me started”.

Why the youth sense anger in faces

    We tend to believe that older people are more positive and younger people are more sensitive to social cues (暗示).

    Recently scientists investigated this idea by testing 10,000 men and women. They wanted to see if age affected a person's ability to identify facial emotions, such as fear and anger.

    The researchers from McLean Hospital in the US used a Web-based platform to collect happiness data. It showed the participants two headshots (头部特写)of random people. They were then asked to identify which subject was angrier, happier, or more fearful.

    The research found that younger people were able to better identify angry and fearful facial cues than older people.

    "From studies and anecdotal evidence, we know that the everyday experiences of an adolescent are different from an older person, but we wanted to understand how these experiences might be linked with differences in basic emotion understanding,wrote Laura Germine, the study's senior author.

    But what is it that makes young people more sensitive?

    "This is the exact age when young people are most sensitive to forms of negative social cues, such as bullying," Lauren Rutter, the study's lead author, told Science Daily. "The normal development of anger sensitivity can contribute to some of the challenges that arise during this phase of development.

    On the contrary  across the whole 10,000-person survey, researchers found no decline in the perception (感知)of happiness among older participants.

    "What's remarkable is that we see declines in many visual perceptual abilities as we get older, but here we did not see such declines in the perception of happiness, Germine told Neuro Science News.

    She added that these findings fit well with other researches, showing that older adults tend to have more positive emotions and a positive outlook.

    Following the paper's release, Rutter told Neuro Science News that gathering their primary research online allowed the team to research into a "much larger and more diverse sample set" than previous studies.