Many people think of guys as being carefree when it comes to their appearance. But in fact, a lot of guys spend plenty of time in front of the mirror. They care just as much as girls do about their body image.

    Body image is a person's opinions and feelings about his or her own body and physical appearance. {#blank#}1{#/blank#}You appreciate your body for its capabilities and accept its imperfections.

    {#blank#}2{#/blank#}Here are some ideas.

    Recognize your strengths. Different body types are good for different things. What does your body do well? Maybe your speed, strength, or coordination makes you better than others at a certain sport. That may be basketball, table tennis, mountain biking, dancing, or even running. Or perhaps you have non-sports skills, like drawing, painting, singing, playing a musical instrument, writing, or acting. {#blank#}3{#/blank#}

    Exercise regularly. Exercise can help you look well and feel good about yourself. Good physiques (体形) don't just happen. {#blank#}4{#/blank#} A healthy habit can be as simple as exercising 20 minutes to 1 hour three days a week. Working out can also lift your spirits.

    Respect your body! Practicing good habits regular showering; taking care of your teeth, hair, and skin; wearing clean clothes, and so on can help you build a positive body image.

    {#blank#}5{#/blank#} Your body is just one part of who you are. Your talent for comedy, a quick wit (智慧) and all the other things make you unique. So try not to let small imperfections take over.

    Neuroscientists have explained the risky, aggressive or just plain baffling behavior of teenagers as the product of a brain that is somehow compromised. Groundbreaking research in the past 10 years, however, shows that this view is wrong. The teen brain is not defective. It is not a half-baked adult brain, either. It has been forged by evolution to function differently from that of a child or an adult.

    The most important of the teen brain's features is its ability to change in response to the environment by modifying the communication networks that connect brain regions. It allows teenagers to make enormous progress in thinking and socialization. But the change also makes them sensitive to dangerous behavior and serious mental disorders.

    The most recent studies indicate that the riskiest behaviors arise from a mismatch between the maturation of networks in the limbic system(边缘系统), which drives emotions at adolescence, and the maturation of networks in the prefrontal cortex（前额皮质）, which occurs later and promotes sound judgment and the control of impulses. Indeed, we now know that one's prefrontal cortex continues to change noticeably until his 20s. And yet adolescence seems to be starting earlier, extending the “mismatch years.”

    The plasticity of networks linking brain regions—and not the growth of those regions, as previously thought—is key to eventually behaving like an adult. Understanding that, and knowing that a widening gap between the development of emotional and judgment networks is happening in young people today, can help parents, teachers, counselors and teenagers themselves. People will better see that behavior such as risk-taking and turning away from parents and toward peers are not signs of cognitive or emotional problems. They are a natural result of brain development, a normal part of adolescents learning how to negotiate with a complex world.

    The same understanding can also help adults decide when to intervene. A 15-year-old girl's departure from her parents' tastes in clothing, music or politics may be a source of anxiety for Mom and Dad but does not indicate mental illness. A 16-year-old boy's tendency to skateboard without a helmet or to accept risky dares from friends is not unimportant but is more likely a sign of short-range thinking and peer pressure than a desire to hurt himself. Knowing more about the unique teen brain will help all of us learn how to separate unusual behavior that is age-appropriate from that which might indicate illness. Such awareness could help society reduce the rates of teen addiction, motor vehicle accidents and depression.

    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 and 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 ideas 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(符号) 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.

    For those who may not be familiar, there is no such thing as a bicycle grants(补助金). As a matter of fact, there are a number of organizations and programs offering bicycle grants to bicyclers all over the world. Now of course, you can't simply receive money, because you want to buy a new mountain bike. Usually, those awarded grants are working on improving the quality of life. People are excited about the bicycle grants. This type of influence and achievement is gaining the attention of various companies that want to help by providing the necessary funding.

Eastman Kodak Company

    Kodak has developed a fund called the “Kodak American Greenways Awards". They are cooperating with the National geographic Society and the Conservation fund. Each year, they present grants as high as $2,500. The “seed” grant award is awarded to organizations that focus on improving blue ways, greenways, natural areas, and trails.

    US Government

    The government has developed their only program for bicycle riders, called" The US Department of transportation's Recreational Trails Program". The government's program is primarily focused on funding trail projects. The benefits of the fund is recreation, which includes bicycling, hiking, in-line skating, snowmobiling, all-terrain(地面)vehicle riding, and so forth. The great addition to the fund is that they distribute the funding to all the states. This means that everybody has the opportunity of receiving bicycle grants.

    Bikes Belong Coalition

    The Bikes Belong Coalition makes putting more people on bicycles their priority. They advocate for a better environment, recreation, sports, and better health, by way of bicycling. At the same time, they provide funding for supporting projects and bicycle facilities. Some of the projects they accept are paved lanes and bike paths. Applications for their grants can be submitted by either a facility class or a supporting class. Also, Bikes Belong Coalition are not quick to award bicycle grants to those who have been awarded in the past 3 years. This is partially due to their limited amount of funding

    Plants are boring. They just sit there photosynthesizing (光合作用) while animals have all the fun. Right? Not so much. A new study has found that there is a long history of interactions between ants and plants. The ant and plant co-evolution (协同进化) started with ants feeding on plants and plants evolving ant-friendly features.

    Plants make a number of different structures that are specific for ant use. Some plants have evolved features that persuade ants into defending them from attack from other insects and even mаmmаlѕ. Тhеѕе іnсludе hollow thorns that аntѕ will live іnѕіdе, or ехtra nесtаr (琼浆) оn lеаvеѕ or stems for the ants to eat. Some ants will just cheat and take the nectar and run, but some will stick around and attack anything that tries to hurt the plant. Other plants get ants to help them move their seeds around, by providing them with rich food packets attached to the seeds. The ant will pick up the seed and carry it away, eat the food packet, and leave the seed—often in a nutrient-rich area where it'll grow better, and since it's farther away from its parent, they won't have to compete for resources.

    But scientists weren't sure how the evolutionary relationship between ants and plants got started. If evolution is an arms race between species developing ways to make use of their neighbors, then scientists wanted to know whether plants or ants fired the first shot. It was a chicken-and-egg question, whether things started with ants developing behaviors to take advantage of plants, or plants evolving structures to take advantage of ants.

    The history of ants and plants evolving together goes back to the time of the dinosaurs, and it's not easy to tell from fossils who fired the first shot. However, it is a question of little significance. Scientists say their study maters because it provides a look at how these widespread and complex interactions evolved.

It's normal to long for the taste of potato chips or a cheese-covered pizza. Even though they're full of calories, eating them occasionally won't do much harm. However, according to the new numbers, young people are becoming more gluttonous. The BBC's Good Food Nation Survey showed that on average, 16 to 20-year-olds ate fast food at least twice a day in the UK. So what's behind this fast food binge (狂热)?

WebMD, an online publisher of news and information of human health and well-being, surveyed nearly 600 teenagers and adults in the United States. They found that the most common reason was our busy lifestyle. More than 92.3 percent of respondents said they were too busy to cook. Many find it challenging to balance work and life, and the convenience of fast food meets their needs. Fast food is readily available in corner stores and vending machines (自动售货机). Remember those instant noodle cups from the supermarket? They're ready in minutes, and you can store them at home for a long time.

But many people think this trend does no good. Sarah Toule, head of health information at World Cancer Research Fund, told the BBC: "It's frightening that people, especially younger generations, are eating so much fast food loaded with fat, sugar and salt, but offers little nutritional value."

She added, "Especially high in calories, fast food leads to unhealthy weight gain — which in turn increases the risk of 11 cancers later in life."

So what is the right thing to do? Toule suggested that young people should prepare meals in advance and learn to include the different food groups in their diets.