If you answer "Yes" to more than two of these questions, you are one of those people with stress. So what can you do about it?
Doing relaxing exercises, talking with friends and listening to light music are all usual ways of relieving（减轻） stress. However, doctors now say that there are easier ways—people should laugh and smile more often. When you laugh and smile, your body relaxes. They also say that people, especially men, should cry more often, be­cause crying is the natural way of relieving stress.

      The next time you look up at the sky and see a cloud that looks like Mickey Mouse or your favorite fruit, look again. It may not be a cloud, but a Flogo -- a logo that flies. It's a new form of advertising in the sky that's never been used before. It's a different way to market your products, logos, and events.

     These funny logos are made with soap bubbles （肥皂泡） mixed with a little helium gas （氦气） ,which makes them lighter than air and float in the sky. Special machines are used to make these new funny Flogos. The machine, which can be rented for $ ,500 a day, can make a Flogo every 15-5 seconds.

      Flogos can fly much higher or lower if needed. They can last from a few minutes to an hour anywhere in the sky, depending on the weather conditions. Though they can fly up to 0, 000 feet, they usually float around at 300- 500 feet. Flogos are only white now, but people hope to have more colorful Flogos in the near future.

     Flogos are Green, 100% environmentally safe, because the soap used to make the Flogo comes from plants and leaves. So this fun way of advertising is healthy and good for the environment.

    Birdwatching is becoming more and more popular in many parts of the world．

    Birdwatchers enjoy looking for and listening to different kinds of birds．To watch birds, all you need is a pair of binoculars, a field guide and love for birds．

    If you are just starting birdwatching, buy one of the cheaper pairs of binoculars．You can choose better ones when your needs and skills grow．A field guide helps you leam about the birds' appearances, calls and habits before birdwatching．

    When you are ready, it's best to go to the wild with someone who is more experienced．You can join a birdwatching group to learn about some beginning skills．A local bird club is ideal．

    Start birdwatching in the morning, when birds are searching for food．Most of the time, you will hear bird calls from all around you, but will not see any birds easily．Look for movement in trees, and bring your binoculars to your eyes．

    The most important work for a birdwatcher is to identify the birds he/she sees．A bird's shape, size, colour and habits can help a birdwatcher identify it．When you identify a bird, don't forget to take notes about it on your notebook．

    To find more and different birds, you may wish to plan trips to birds' different living areas： forests, lakes, rivers, wetlands, etc．

    When watching the birds, you should always keep in mind： respect wildlife and protect its living areas．

    Everyone has got two personalities (性格)—the one that is shown to the world and the other that is secret and real. You don't show your secret personality when you're awake because you can control yourself, but when you're asleep, your sleeping position shows the real you. In a normal night, of course, you often change your sleeping positions. The important position that best shows your secret personality is the one that you go to sleep.

    If you go to sleep on your back, you're a very open person. You normally trust people and you are easily influenced by new ideas. You don't like to make people unhappy, so you never express your real feelings. You're quite shy and you aren't very confident.

    If you sleep on your stomach, you are a person who likes to keep secrets. You worry a lot and you're always easily becoming sad. You never want to change your ideas, but you are satisfied with your life the way it is. You usually live for today not for tomorrow.

    If you sleep on curled up (蜷缩) , you are probably a very nervous person. You have a low opinion of yourself and often protect yourself from being hurt, so you are very defensive. You're shy and you don't usually like meeting people. You like to be on your own.

    If you sleep on your side, you have usually got a well-balanced (平衡的) personality. You know your strengths and weaknesses. You're usually careful. You have a confident personality. You sometimes feel worried, but you don't often get unhappy. You always say what you think, even if it makes people angry.

    In 1901, H. G. Wells, an English writer, wrote a book describing a trip to the moon. When the explorers (探险者) landed on the moon, they discovered that the moon was full of underground cities. They expressed their surprise to the "moon people" they met. In mm, the "moon people" expressed their surprise. "Why are you travelling to outer space when you don't even use your inner space?" they asked.

    H. G. Wells could only imagine the travel to the moon. In 1969, human beings really did land on the moon. People today know that there are no underground cities on the moon. However, the question that the "moon people" asked is still an interesting one. A growing number of scientists are seriously thinking about it.

    Underground systems (体系) are already in place. Many cities have underground car parks. In some cities, such as Tokyo, Seoul and Montreal, there are large underground shopping areas. The "Chunnel", a tunnel connecting England and France, is now completed.

    But what about underground cities? Japan's Taisei Corporation is designing a network of underground systems, called "Alice Cities". The designers imagine using surface space for public parks and using underground space for flats, offices, shopping and so on. A solar dome (太阳能穹顶) would cover the whole city.Supporters of underground development say that building down rather than building up is a good way to use the earth's space. The surface, they say, can be used for farms, parks, gardens, and wilderness. H. G. Wells's "moon people" would agree. Would you?

    The largest animal ever to live on Earth is the blue whale. It weighs about 80 tons--more than 24 big elephants. It is more than 30 metres long. A new baby whale weighs as much as a big elephant.

    Cats won't die if they fall off very high places because they can turn themselves up the right way so as to keep their bodies safe. One cat fell off 32 floors onto the street, but it was just hurt a little.

    A bear can run as fast as a horse.

    A new-born panda is smaller than a mouse and weighs about 100 grams.

    Elephants are the most careful animals in their love. A male elephant may show his lady love for up to three years until the female elephant takes his love. They often show their love by touching each other's body.

    Usually, wolves do not hurt people. For years a Canadian newspaper says that they would give anyone a lot of money if he or she could show that a wolf could hurt a person. But nobody could do that. Wolves do not usually go together though they may do this in winter and they only hurt people at an unusual time.