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.

    We know the famous ones — the Thomas Edisons and the Alexander Graham Bells — but what about the less famous inventors? What about the people who invented the traffic light and the windshield wiper（雨刮器）? Shouldn't we know who they are?

    Joan Mclean think so. In fact, Mclean, a professor of physics at Mountain University in Range, feels so strongly about this matter that she's developed a course on the topic. In addition to learning “who” invented “what”, however, Mclean also likes her students to learn the answers to the “why” and “how” questions. According to Mclean, “When students learn the answers to these questions, they are better prepared to recognize opportunities for inventing and more motivated to give inventing a try.”

    Her students agree. One young man with a patent for an unbreakable umbrella is walking proof of Mclean' statement. “If I had not heard the story of the windshield wiper's invention,” said Tommy Lee, a senior physics major, “I never would have dreamed of turning my bad experience during a rainstorm into something so constructive.” Lee is currently negociating to sell his patent to an umbrella producer.

    So, just what is the story behind the windshield wiper? Well, Mary Anderson came up with the idea in 1902 after a visit to New York City. The day was cold and stormy, but Anderson still wanted to see the sights, so she jumped aboard a streetcar. Noticing that the driver was struggling to see through the snow covering the windshield, she found herself wondering why there couldn't be a built-in device for cleaning the window. Still wondering about this when she returned home to Birmingham, Alabama, Anderson started drafting out solutions. One of her ideas, a lever（操作杆）on the inside of a vehicle that would control an arm on the outside, became the first windshield wiper.

    Today we benefit from countless inventions and innovations. It's hard to imagine driving without Garrett A. Morgan's traffic light. It's equally impossible to picture a world without Katherine J. Blodgett's innovation that makes glass invisible. Can you picture life without clear windows and eyeglasses?

    You know eating fruit and vegetables is helpful. But did you know it can also make you look good?

    People who increased their intake over just six weeks developed a healthy glow and appeared more attractive, researchers found.

    Scientists at St Andrews University found eating them subtly increased yellow and red pigments in the volunteers' skin.

    They monitored the food intake of 35 people and took pictures of their faces, arms and hands using a sensitive camera at the start, and after three and six weeks.

    Increasing their intake of greens by 2.9 portions a day was found to make the person look healthier and an extra 3.3 portion could enhance their attractiveness, when their photographs were rated by others.

    Fruit and vegetables are rich in carotenoids（类胡萝卜素）, which are known to protect against cell damage from pollution and UV rays, and can also prevent age-related diseases including heart disease and cancer.

    But while it was known eating extreme amounts of certain vegetables such as carrots could turn skin orange, it was not known a small increase was perceptible to others and was seen as appealing.

    A camera measured changes to the skin's redness, yellowness and lightness, and found it significantly changed in people who naturally increased their intake. These changes were not evident at three weeks.

    Using light sensors, the researchers showed these red and yellow hues(色调，色相) were linked with the levels of carotenoids in their skin.

    There are hundreds of carotenoids but those thought to have the most dramatic effect are lycopene（番茄红素）which gives tomatoes and red peppers their red color - and beta-carotene found in carrots as well as broccoli, squash, and spinach.

    Skin color is also affected by chemicals called polyphenols(多酚), found in apples, blueberries and cherries, which cause blood rush to the skin surface.

    Tiny microbes(微生物)are at the heart of a new agricultural technique to manage harmful greenhouse gas. Scientists have discovered how microbes can be used to turn carbon dioxide into soil­enriching limestone(石灰石), with the help of a type of tree that grows in tropical areas, such as West Africa.

    Researchers have found that when the Iroko tree is grown in dry, acidic soil and treated with a combination of natural fungi(霉菌)and other bacteria, not only does the tree grow well, it also produces the mineral limestone in the soil around its root.

    The Iroko tree makes a mineral by combining Ca from the earth with CO₂ from the atmosphere The bacteria then create the conditions under which this mineral turns into limestone. The discovery offers a new way to lock carbon into the soil, keeping it out of the atmosphere. In addition to storing carbon in the trees leaves and in the form of limestone, the mineral in the soil makes it more suitable for agriculture.

    The discovery could lead to reforestation(重新造林) projects in tropical countries, and help reduce carbon dioxide in the atmosphere in the developing world. It has already been used in West Africa and is being tested in Bolivia, Haiti and India.

    The findings were made in a three­year project involving researchers from the Universities of Edinburgh, Granada, Lausanne and Delft University of Technology. The project examined several microbiological methods of locking CO₂ as limestone, and the Iroko­bacteria way showed best results. Work was funded by the European Commission under the Future&Emerging Technologies(FET)scheme.

    Dr. Bryne Ngwenya of the University of Edinburgh's School of GeoSciences, who led the research, said: "By taking advantage of this natural limestone­producing process, we have a low­tech, safe, readily employed and easily operating way to lock carbon out of the atmosphere, while improving farming conditions in tropical countries."

When learning a new language, speakers often have non-native accents. Linguistic research suggests such accent is shaped by the speaker's first language that they learned when growing up. Schepens' team's research puts new light on just how strong these effects can be.

There're similar researches from other scientists, but Schepens' team analyzed a data set of more than 50,000 adults, who learned Dutch as their second or third languages. Besides, these adults came from more than 60 different first language backgrounds. These data were collected through a state exam administered by the Dutch government for foreigners that enter Holland. The exam rated each test taker's Dutch speaking proficiency(熟练，水平)

The team found that about half of the individual difference in the proficiency of learners could be accounted for by a handful of reasons: the learner's education and sex (women had higher scores than men), the learner's age when they arrived in Holland, the time they spent in Holland, and the learner's first language. This last reason was the most prominent one since it accounts for 50 percent of the explained difference in learners' proficiency.

What leads to this? Working with professor Hout, Schepens's team studied the linguistic similarity between Dutch and the 62 first languages spoken by different learners in the database. The huge majority—about 80 percent—of the effect of the language background was explained by linguistic similarity. Of the test takers who grew up speaking Arabic, only about 5 percent scored higher in Dutch speaking proficiency than the worst 50 percent of the test takers that grew up speaking German.

"Our results suggest this is largely due to the fact that German shares many linguistic characteristics with Dutch, but Arabic does not," says Schepens.

"This suggests a large part of the non-nativeness of a learner is simply due to the language they grew up with, and this reason is entirely out of their control," says Florian Jaeger." The result can play a part in language teaching."

POETRY CHALLENGE

Write a poem about how courage, determination, and strength have helped you face challenges in your life.

Prizes

Grand Prizes: Trip to Washington, D. C. for each of three winners, a parent and one other person of the winner's choice. Trip includes round﹣trip air tickets, hotel stay for two nights, and tours of the National Air and Space Museum and the office of National Geographic World.

6 First Prizes: The book Sky Pioneer: A Photobiography of Amelia Earhart signed by author Corinne Szabo and pilot Linda Finch.

50 Honorable Mentions: Judges will choose up to 50 honorable mention winners, who will each receive a T﹣shirt in memory of Earhart's final flight.

Rules

Follow all rules carefully to prevent disqualification.

■Write a poem using 100 words or fewer. Your poem can be any format, any number of lines.

■Write by hand or type on a single sheet of paper. You may use both the front and back of the paper.

■On the same sheet of paper, write or type your name, address, telephone number, and birth date.

■Mail your entry to us by October 31 this year.