For teenagers, it's great fun to explore new places and it feels like an adventure, even when you know you're not the first to have been there. But to make sure not to get lost or waste time going round in circles, the following tips may be helpful.

    ◆Do the map reading if you're being driven somewhere. It'll be easier if you keep the map following the direction you are traveling in. Keep looking ahead so that you can give the driver lots of warning before having to make a turn, or you'll have to move to the back seat.

    ◆Get a group of friends together and go exploring. You'll need a good map, a compass, a raincoat, a cell phone to call for help in case you get lost, and a bit of spare cash for emergencies. Tell someone where you're going before you set out and let them know what time you expect to be back. The purpose of the activity is in not getting lost, not in seeing how fast you can go, so always stick together, waiting for slower friends to catch up.

    ◆See if your school or a club organizes orienteering(越野识途比赛) activities, in which you need a map and a compass to find your way. This can be done as a sport, with teams trying to find the way from A to B(and B to C, etc. ) in the fastest time, or simply as a spare-time activity. It enables you to be familiar with the use of maps and compass and gain some special skills. In some way, it's not only good fun, but also a great way to keep fit.

阅读短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

    Human beings are the most intelligent of all animals because we are gifted with the ability to think and reason logically. Scientists and even common people with special intelligence have made a lot of inventions and contributions to modern lifestyle in the past. “Houses” have been the most popular area for discoveries and inventions in the past and even now.

    Many household items have been the result of inventions of people who desired better functioning of the existent products. Every individual has intelligence and if it is used properly for the right purpose it leads to invention of a new tool or device. Many new household inventions are made almost every day and there are specific companies, which particularly keep a record of all these inventions.

    A lot of inventions have been made recently in the household field. These products are patented(专利的) and have trade mark licenses. The patented sliding cinch is a very simple but effective method to prevent shoulder stress and injury for those who work before computers all day long. Vanity PC is a type of computer furniture that specifically hides all the computer wires and keeps a clean and good look. All the outdoor dust, mud and snow can be kept out of the house by installing(安装) the dirt drain(排水管) at the entrance of the door. Another important invention is the automatic toilet night-light, in which a small light starts when the lid of the toilet seat is opened and closes as soon as the lid is closed.

    These are some of the new household inventions invented mostly by common people. Thus, a variety of new household items are invented every day, which helps in a better functioning of household chores and in a more useful manner.

    Last summer I got a real taste of Swiss life when I spent six weeks with a host family in the Bernese Alps.

    On arriving in Erlenbach where my host family live,I knew I couldn't have asked for a better setting: it was such a beautiful mountain village.

    And I couldn't have asked for a better host family,either.They made me feel like part of their family,rather than a tourist—I joined in my host family's day-to-day activities,whether helping pick berries in the garden or going to friends' houses.I wasn't only traveling around Europe seeing the major sights,but I lost myself in a different culture.

    While many Swiss cultures are similar to America's,there are lots of differences,too.For example,most Swiss leave their windows open—without screens—all the time.At first I thought all the bugs（虫子）were going to get in and eat me alive,and wondered why they didn't close the windows and turn on the air conditioner.But then I realized there weren't many bugs and I really enjoyed the fresh air.

    Probably my biggest shock was the language.I expected the Swiss to speak German,but they spoke a dialect called Swiss German,which has hardly anything in common with German.At times I was very frustrated（受挫的）because my three years of German did not help,but my bad mood did not last.Anyhow,many people knew English and were extremely willing to speak it.

    Signing up for a cultural exchange was probably the biggest risk I ever took,but it was also the most rewarding. When I left,I promised I would return to Erlenbach.There is more to Switzerland than cheese and watches.

    In the waters off Brisbane, Australia, a seven­foot­long sand tiger shark swims in pain. A two­foot­long spike sticks out of her side. It's a piece of fishing equipment that the shark ate carelessly. After traveling into her body, the spike punctured(刺) through the shark's stomach.

    A man swimming in the water notices the shark. Then, he warns Sea World Marine Park in the nearby town of Gold Coast. Sea World sends a 12­person team from its rescue center to where the shark was discovered in Moreton Bay Marine Park. Soon, they find her lying on the seafloor. "She'll die without help，"says Trevor Long, leader of the rescue center.

    Using an onboard crane(吊车), the rescuers move the shark into their boat's 13­foot­long tank(缸). Then Dr. David Blyde gives the shark pain medicine and performs an operation to remove the spike. After that, the team sails with the shark to Sea World 33 miles away. They place the fish in a 49­foot­long tank and wait to see if she gets better.

    To give the shark's stomach time to get better, she isn't fed for the first few days. A week after her operation, Long offers the shark a small, dead fish. The animal refuses to eat. But days later when he drops another fish into her tank, the shark enjoys her meal. By now the shark's wounds are getting better.

    Two weeks after her rescue, they take the shark back to the boat and return her to Moreton Bay Marine Park. As the fish is lowered by the crane to the water's surface, two rescuers jump into the ocean and guide her into the sea. From the boat, Long watches her swim away." The shark has another chance," Long says.

    Unbelievable Stories of Animals Acting Just Like Humans

    Horses are picky eaters

    Horses have an even better sense of smell than humans do. When horses raise their noses and open their nostrils (鼻孔) , their nervous system allows them to sense smells we can't sense. This might explain why they refuse dirty water and carefully move around meadows, eating only the tastiest grasses, experts say.

    Whale says thanks

    In 2011, a whale expert spotted a humpback whale trapped in a fishing net and spent an hour freeing it. Afterward, in an hour-long display of thanks, the whale swam near their boat and leaped into the air about 40 times.

    Pandas like to be naughty

    Is there anything more lovely than a baby panda, except maybe a human baby? In fact, baby pandas sometimes behave like human babies. They sleep in the same positions and value their thumbs. Pandas are shy by nature for its shy behaviors such as covering its face with a paw of ducking its head when confronted by a stranger.

    A cat honors its owner

    Paper towels, and a plastic cup are just a few of the gifts that Toldo, a devoted three-year-old gray-and-white cat, has placed on his former owner Iozzelli Renzo's grave every day since the man died in September 2011. Renzo adopted Toldo from a shelter when the cat was three months old, and the two formed an inseparable bond. After Renzo passed away, Toldo followed the coffin to the cemetery, and now "stands guard" at the grave for hours at a time.

    Good health is the most valuable thing a person can have, but one cannot take good health for granted. It is important to remember that the body needs proper care in order to be healthy. There are three things that a person can do to help stay in good shape: eat right food, get enough sleep, and exercise regularly.

    Proper nutrition (营养) is important for good health. Your body cannot work well unless it receives the proper kind of "fuel"(燃料).Don't eat too much food with lots of sugar and fat. Eat plenty of foods high in protein (蛋白质) ,like meat, fish, eggs and nuts. Vegetables and fruits are very important because they provide necessary vitamins (维他命) and minerals. However, don't overeat. It is not helpful to be overweight.

    Getting the proper amount of sleep is also important. If you don't get enough sleep, you feel tired and easily get angry. You have no energy. Over a long period of time a little amount of sleep may even result in a change of personality (人的个性). Be sure to allow yourself from seven to nine hours of sleep each night. If you do, your body will feel strong and refreshed, and your mind will be sharp.

    Finally, get plenty of exercise. Exercise firms the body, strengthens the muscles, and prevents you from gaining weight. It also improves your heart and lungs. If you follow a regular exercise program, you will probably increase your life-span (寿命). Any kind of exercise is good. Most sports are excellent for keeping the body in good shapes: basketball, swimming, bicycling, running and so on are good examples. Sports are not only good for your body, but they are enjoyable and interesting, too.

    If everybody, were to eat the right foods, get plenty of sleep and exercise regularly, the world would be a happier and healthier place. We would all live to be much older and wiser.