It's normal that people sometimes feel nervous. Everybody gets stressed from time to time.{#blank#}1{#/blank#} Some ways of dealing with stress 一like screaming or hitting someone一don't solve (解决)，much. But other ways, like talking to someone you trust, can lead you to solving your problem or at least feeling better.

    Four steps for fighting stress, try taking these four steps, the next time you are stressed:

1) Get support. When you need help, reach out to the people who care about you. Talk to “trusted adult, such as “parent or other relatives. {#blank#}2{#/blank#} They might have had similar problems, such as dealing with a test, or the death of a beloved pet.

2) Don't take it out on yourself. Sometimes when kids are stressed and upset they take it out on themselves. Oh, dear, that's a good idea. Remember that there are always people to help you. Don't take it out on yourself. {#blank#}3{#/blank#}

3) Try to solve the problem. After you're calm and you have support from adults and friends, it's time to get down to business. {#blank#}4{#/blank#} Even if you can't solve it all, you can solve a piece of it.

4) Be positive. Most stress is temporary(暂时的).Remember stress does go away, especially when you figure out the problem and start working on solving it. These steps aren't magic, but they do work. And if you can stay positive as you make your way through a tough time, you'll help yourself feel better even faster.{#blank#}5{#/blank#}

A. Ask for a helping hand to get you through the tough situation.

B. Notice your friends' feelings and find a way to help them.

C. Different people feel stress in different ways

D. Ah, it feels so good when the stress is gone.

E. You need to figure out what the problem is.

F. And don't forget about your friends.

G. Then, find a way to calm down.

    Sports can help you keep fit and get in touch with nature. However, whether you are on the mountains, in the waves, or on the grassland, you should know that your choice of sport might have great influence on the environment.

    Some sports are resource-hungry（消耗资源）. Golf, as you may know, eats up not only large areas of countryside, but also tons of water. Besides, all sorts of chemicals and huge amounts of energy are used to keep its courses（球场）in good condition. This causes major environmental effects. For example, in the dry regions of Portugal and Spain, golf is often held responsible for serious water shortage in some local areas.

    There are many environmentally-friendly sports. Power walking is one of them that you could take up today. You don't need any special equipment except a good pair of shoes; and you don't have to worry about resources and your wallet. Simple and free, power walking can also keep you fit. If you walk regularly, it will be good for your heart and bones. Experts say that 20 minutes of power walking daily can make you feel less anxious, sleep well and have better weight control.

    Whatever sport you take up, you can make it greener by using environmentally-friendly equipment and buying products made from recycled materials. But the final goal should be “green gyms(健身房；体育馆)”. They are better replacements（代替物）for traditional health clubs and modern sports centers. Members of green gyms play sports outdoors, in the countryside or some other open spaces. There is no special requirement for you to start your membership. And best of all, it's free.

    When her five daughters were young, Helene An always told them that there was strength in unity (团结). To show this, she held up one chopstick, representing one person. Then she easily broke it into two pieces. Next, she tied several chopsticks together, representing a family. She showed the girls it was hard to break the tied chopsticks. This lesson about family unity stayed with the daughters as they grew up.

    Helene An and her family own a large restaurant business in California. However, when Helene and her husband Danny left their home in Vietnam in 1975, they didn't have much money. They moved their family to San Francisco. There they joined Danny's mother, Diana, who owned a small Italian sandwich shop. Soon afterwards, Helene and Diana changed the sandwich shop into a small Vietnamese restaurant. The five daughters helped in the restaurant when they were young. However, Helene did not want her daughters to always work in the family business because she thought it was too hard.

    Eventually the girls all graduated from college and went away to work for themselves, but one by one, the daughters returned to work in the family business. They opened new restaurants in San Francisco and Los Angeles. Even though family members sometimes disagreed with each other, they worked together to make the business successful. Daughter Elisabeth explains, "Our mother taught us that to succeed we must have unity, and to have unity we must have peace. Without the strength of the family, there is no business."

    Their expanding business became a large corporation in 1996, with three generations of Ans working together. Now the Ans' corporation makes more than $20 million each year. Although they began with a small restaurant, they had big dreams, and they worked together. Now they are a big success.

    In areas like the Central United States that get lots of tornadoes, there^'s a common piece of celestial （天上的）fortune-telling that green skies mean a tornado is on its way. Research has shown that it isn^'t quite as simple as that, but scientists have found that if you see a green sky, you should probably go inside. As far as most scientists can tell, the green skies around powerful thunderstorms are usually a combination of red sunsets and water droplets.

    Daytime skies are blue because blue shorter wavelengths of visible light tend to bounce off （反射）air molecules better than red longer wavelength light. So the blue light gets bounced all over the sky and looks like it's coming from everywhere. Meanwhile, around sunset sunlight travels through so much atmosphere that just about all the blue is bounced away from the horizon, leaving all those reds and oranges behind. The sunset might look exclusively （独有的）red and orange, but there's still some green and even blue light hidden in there, just far less than the other colors. But for us to notice the remaining green light, it needs to hit something that reflects green light much better than red. That's where water comes in.

    Big tall threatening storm clouds are made of water droplets, and even though water is best at reflecting blue light, it can still reflect green pretty well, much better than reds and oranges, so under just the right conditions, the water in and around a cloud can bounce the green light hidden in the sunset right into our eyes making the sky look green.

    Still, none of the conditions that can turn skies green are unique to the clouds that produce tornadoes. Sometimes they just lead to lots of rain, and maybe some hail. So if you see huge storm clouds rolling in and a green tint （色调）in the sky, it doesn't necessarily mean there^'s about to be a tornado, but it does mean you should probably head indoors.

    Like infectious diseases, ideas in the academic world are epidemic (传染的). But why some travel far and wide while equally good ones has been a mystery? Now a team of computer scientists has used an epidemiological model to simulate (模仿) how ideas move from one academic institution to another. The model showed that ideas originating at famous institutions caused bigger "epidemics" than equally good ideas from less famous places, explains Allison Morgan, a computer scientist at the University of Colorado Boulder.

    "This implies that where an idea is born shapes how far it spreads," says senior author Aaron Clauset.

    Not only is this unfair— "it reveals a big weakness in how we're doing science," says Simon DeDeo, a professor of social and decision sciences at Carnegie Mellon university, who was not involved in the study. "There are many highly trained people with good ideas who do not end up at top institutions. They are producing good ideas, and we know those ideas are getting lost," DeDeo says. "Our science, our scholarships, is not as good because of this."

    The Colorado researchers first looked at how five big ideas in computer science spread to new institutions. They found that hiring a new faculty member accounted for this movement a little more than a third of the time--and in 81 percent of those cases, transmissions took place from higher – to lower-prestige (声望) universities. Then the team simulated the spread of ideas using an infectious disease model and found that the size of an idea "epidemic" depended on the prestige of the originating institution.

    The researchers' model suggests that there "may be a number of quite good ideas that originate in the middle of the pack, in terms of universities." Clauset says. There is a lot of good work coming out of less famous places, he says: "You can learn a huge amount from it, and you can learn things that other people don't know because they're not even paying attention."

The easiest way to love yourself is to treat yourself like your own BFF (Best Friend Forever). {#blank#}1{#/blank#} Quite simply, this means you need to recognize your own self-worth and live your own life as honestly as you can. Read on to learn some strategies so you can embark on a journey of loving yourself.

{#blank#}2{#/blank#}Negative thoughts often come from outside people whose opinions we value and from whom we seek love and acceptance. Trace down the core of those negative thoughts and tell yourself a different story. Think about what you would say to a close friend who said those things about themselves.

Accept your flaws as part of who you are. Everything you've done and everywhere you've been is a part of who you are. {#blank#}3{#/blank#} Instead, accept that they're all parts of the same whole. When you love yourself, you love all of you because you wouldn't have the good without the bad.

Focus on your effort rather than the result to control perfectionism. If you expect yourself to be perfect for ever, you'll never be pleased with anything you produce. {#blank#}4{#/blank#} Try to appreciate the work you put into completing a task, rather than looking for flaws in what you done.

Practice gratitude for good things. Its human nature to see negative things as bigger and more important than positive things, but this also does tremendous damage to your self-esteem. When you find yourself focusing on negative or less favorable events in your life, immediately try to name 3 to 5 things that you can be grateful for. {#blank#}5{#/blank#}

A. This can lead to low self-esteem.

B. Pay attention to negative thoughts.

C. Let go of negative thoughts about yourself.

D. Self-love isn't about fixing all the "bad" things about yourself.

E. Look for the positive side even when bad things happen to you.

F. Usually, it might seem like it's easier to love others than to love yourself.

G. Actually, it's tough to build healthy relationships if you don't love yourself first.