In America, when the eighth graders leave the middle school, they are often worried about moving to the high school．It is a hard time for them, but it can be an exciting one as well．To make it easier, students need to get familiar with their school.

    Even though they've done this already in the middle school, it's still important to find where their classrooms are．Most schools take students to the high school for a visit at the end of their eighth grade year．And, most schools also have a freshman (新生) speech for parents and students before the first year begins．Sometimes the main office will give away a map of the school．This can help students and parents to find different places in the school.

    One way to know your high school more and make new friends is to join a club or play a sport．Schools often offer chances to join different clubs and sports．Fall activities begin in August before the first day of school．If you are not interested in sports, there are clubs for any interest, such as drama, dance, chess, photography, community service, etc．These clubs allow students from different grades．By joining an activity, students can find new friendships, not to mention improving their chances in future college applications(申请)．The school office will have a list of activities offered at the school and information on how to join them.

    What's more, to have a great start to a high school year, students can write down some of their worries, and ask for help from teachers and school workers.

    I believe that my country，Poland，is a perfect example for a place where food is particularly important. When we were little children, we began to understand how much a loaf of bread meant to our parents—to some it might sound silly but for me the custom of kissing bread before you started cutting it was simply amazing. It's not so common nowadays to treat food that way，since you hardly ever bake your own bread. Besides, everyone would call you crazy if you tried to kiss every bread roll before you ate them! But though we no longer make our food from scratch (起点), some customs have been kept—that's why I feel so sorry every time I have to throw any food away—even though I no longer live with my parents and nobody would blame me for this anymore!

    Many people of our nation are still working as farmers, eating what they grow and harvest and therefore enjoying everything more. It's widely known that you value more anything that needs your effort in the first place. In most homes in Poland, especially those of farmers, the whole family would try and have their meals together—extremely difficult now, but so rewarding! You can share other members' troubles and successes, give your children some attention, or just sit down for a moment, instead of rushing through life aimlessly. Furthermore, your body，and stomach in particular will be very grateful for such a time!

    In Poland, a wedding，Christmas or even a birthday is celebrated with a great meal. Women in the house get together and cook ,sometimes for a few days before the event，and the extremely good or unusual food will be remembered and widely talked about.

    You cannot over-value the importance of food in the country. What's more, almost everyone in Poland will be as interested in the topic as I am.

    George Aldrich, whose official title is chemical specialist, works at NASA's White Sands Test Facility in New Mexico. He uses his nose to protect astronauts from unpleasant or harmful odors (气味). His near four-decade career has involved smelling objects from technical handbooks to astronauts' personal things.

    It's crucial that all items taken aboard the International Space Station (ISS) are odorless. Since astronauts are allowed to bring personal items aboard, all their objects must be smell-checked before leaving Earth. In a video provided by Science Channel, Aldrich relates one specific occasion when an astronaut wanted to build a ship in a bottle in space. Everything in the ship-building process had to be sniffed—right down to the glue.

    Aldrich and his team are responsible for making sure that objects are not only odorless but also harmless to astronauts. When the ISS heats up, a process called off-gassing occurs, which means chemicals flow out from certain substances (物质). Objects that would be safe on Earth could give off unpleasant odors or become dangerous when exposed to high temperatures in the ISS's unique environment.

    Of course, humans aren't the only testers or the first to be exposed to potentially dangerous objects. Before Aldrich sticks his nose into a substance, it has been examined by machines. Even though machines can detect unsafe substances, computers cannot tell exactly how things smell to humans. While something could be technically fine, it could be smelly to an astronaut.

Aldrich's nose is not alone there. He is the head of a hard-sniffing team of smell testers. Together they smell each object and rate it on a scale (等级) of 1 to 4. According to NASA, 1 cannot be detected, and 4 is considered not bearable. After the scientists conclude their tests, the scores are averaged. If an item is rated more than 2.4 on the scale, it fails the test and is not allowed on the flight.

    Snorkelling in Silfra

The clear water at this UNESCO world heritage(遗产) site in Thingvellir National Park will leave you speechless. It is one of the highest rated dive sites in the world. During this journey, you will snorkel within a crack between the Eurasian and American continents. You'll experience truly amazing views of the colorful underwater landscape, marine life(海洋生物), and geological formations. Silfra's water is fresh and drinkable at around 2℃ - 4℃ all year round. Visibility can reach more than 100 meters, and swimming often feels more like flying.

    This trip is for anyone who knows how to swim and is up for a unique adventure. We offer transportation with a pick-up in Reykjavik, and provide you with a dry suit. The total length of the tour is approximately five hours, and includes in-water snorkelling lasting around 30 minutes. We'll guide you through the main Silfra Big Crack, Silfra Hall, Silfra Cathedral and Silfra Lagoon.

Included:

    All necessary snorkeling equipment;

    Hot drinks and food;

    Silfra entrance fee of 1,000 ISK.

    Availability: All year at 09:00 and 15:00. Pick-up in one hour before.

    Requirements:

    Participants need to complete the Silfra medical statement before the tour.

    Divers must:

    Be at least 18 years old (young people under 18 years old need a signature from their legal guardian), and the maximum age is 65 years old;

    Be able to communicate in English.

    Be physically fit;

    Not be pregnant;

    Not be under the influence of alcohol or drugs;

    Sign a medical form.

China' Forbidden City—-traditionally off-limit at night for anyone except emperors and visiting dignitaries (显要人物)—- was decorated with lanterns as China celebrated the end of the Chinese New Year holiday. The complex, home to Chinese emperors for five centuries, was opened at night for the first time since it was reopened as the Palace Museum 94 years ago.

    The complex and palace walls were illuminated with red lanterns and a light show, designed to recreate the feelings of the royal court, while the China National Traditional Orchestra and the Peking Opera performed. An image of a treasured scroll called A Thousand Li of Rivers and Mountains was cast onto the palace roof.

    Most of China's 1.3 billion people, however, had to watch the show on television. Only 3,000 people were allowed in: 2,500 invited guests and 500 people who booked their tickets online. "The 3,000 visitors can show off for the whole year," one person said on Weibo. When booking for the second day opened at midnight, the booking system crashed for more than an hour due to great demand. The free tickets were quickly taken when it reopened. A lively secondary market soon appeared. Scalpers were selling tickets for as much as 9,999 yuan on online trading sites.

    The Palace Museum is now on a campaign to attract more visitors, with its former curator Shan Jixiang saying he wants to make traditional Chinese culture more accessible to the general public. More than 80 percent of the palace is now accessible to visitors, up from 30 percent in 2012. Shan has set a target of 85 percent by 2020 to mark the palace's 600^th anniversary. Creativity today has made the Palace Museum younger and drawn traditional culture closer to the public.

    We all know that theme parks are places to have fun and amuse ourselves, but among so many exciting rides there are also some dangers. Make sure you know what the safety standards are for all the attractions at the park. If you do that, you will be safe and have fun.

    Drink water. Believe it or not, dehydration—when your body doesn't have enough water—is the commonest cause of injuries at theme parks. Drinking water while you are at the park is not enough. You must make sure that you drink enough water before you visit it.

    Use your "common sense". There are lots of people around, so make sure you know where your friends or family are. Also, if you are walking and want to stop, make sure nobody is walking behind you. First step aside, then look behind and if you aren't in anybody's way, then stop. It might sound upset, but crashes between people can cause accidents.

    Follow the instructions. The majority of theme parks have instructions for each ride. Some rides only allow people of a certain height. So make sure you are not too tall or too short before boarding any ride. Also, people with certain diseases or conditions are advised not to go on some rides. Do remember: If you are told not to go on a ride, then DON'T.

    Do not ride until a bad stomach or if you've just eaten. Rides can make you ill because of their violent changes of direction and your lunch may end up on someone else's head; surely not a very pleasant experience.

    Have fun, relax and be a little brave! Some rides might look scary but theme parks are very safe places.