It is quite natural for all of us to want to preserve and protect the foods we buy. We always think that the best way is by putting them in our refrigerators. However, there are certain foods which should never be placed in the fridge. The foods listed below may surprise you.

    Bananas in the fridge? Because they keep nutrients better outside the fridge, they should never be placed inside the refrigerator. Bananas are better kept on the counter until they ripen. The cold temperatures actually slow down the ripening process of the bananas, while the moisture and darkness of the fridge will only make them go bad.

    Potato should be placed in a cool, dry and dark space. By reason of the cold temperatures of the fridge, it can turn starch（淀粉）into sugar more rapidly. It is also recommended that potatoes be removed from plastic or paper bags they may have been placed in. Also, keep them unwashed, as well as in a well-ventilated cardboard box.

    Placing your onions inside your refrigerator will eventually end up turning them moldy and soft. Unpeeled（未剥皮的）onions should be kept out of plastic bags and fridge. One of the reasons for this is because unpeeled onions require and need air exposure for maximum life. If you have peeled an onion though, then you should keep it in the fridge, in a covered container.

    Believe it or not, placing garlic in your refrigerator will actually cause it to sprout（发芽）. The garlic will also got moldy and even rubbery. Moreover, inside your fridge, the look of the garlic will rarely change. This means you won't be able to tell if it's any good until you finally slice it open.

    At some point in life, many people suffer a mental problem. While most people get over it, for others it doesn't go away easily.

    The World Health Organization (WHO) says that about 20 percent of children and teenagers across the globe suffer from mental illness. It's thought that the number of children and teenagers with mental illness around the world will increase by half by 2020. It will become one of the main causes of disease, disabilities and even death.

The reason for mental problems among young people may be the increasing pressure in life. Study and relationships have always caused huge stresses for school children. For instance, they experience school bullying(欺凌)and academic pressure.

    In China, the picture isn't bright, either. About 30 million Chinese children and teenagers under the age of 17, or 10 percent of children and teenagers in China, have a mental health challenge, reported China Daily.

    Also, according to China Daily, Chinese people don't seek help with their mental problems. They fear that others will think less of them if they admit that they are in trouble. Many Chinese people are ashamed of their mental problems and mental illness is taboo(禁忌)in any Chinese families.

    In the UK, over three-quarters of young people believe their mental health problems have a social shame and a quarter of young UK people wouldn't ask for help if they developed a mental problem.

    Young people who don't seek help for their condition may be creating problems for themselves in the future. If you feel something is wrong within you – seek help.

Feeling down? Here are three things to try if you feel low.

    Go to a psychology teacher. The teacher will listen to you and offer help – for free!

    Call 800-810-1100. It's the number of a hotline run by the Mental Health Research and Prevention Center. The line is open 24 hours a day.

    Tell your parents and visit the hospital if the situation gets out of control.

    Since so much written language we see today comes from a glowing screen, language has begun to change through our interaction with technology. Social media and the Internet have had a rapid and great effect on the English language, and not necessarily for the better. More and more people have found themselves writing in pieces of words and using unclear acronyms(单词首字母) both in written and spoken language.

    How many times have you typed "LOL" in response to a humorous message? Referred to someone as your "BFF"? Exclaimed, "OMG!" during a particularly shocking event? Social media has affected the words we use in our everyday life. Abbreviations and acronyms commonly known as "text talk" have made their way into both spoken and written language. These are becoming increasingly popular as people struggle for brief expressions to meet word limits on social media like Weibo and Twitter. In addition, the speed of the Internet means language is changing faster than ever. You no longer have to be published through physical and traditional means to bring word trends to public attention.

    Many people believe the overuse of these new terms is a passing trend, and nobody will be using them in just a couple of decades. With the change of language, older terms will surely disappear and fall out of style, and newer and more Internet language will take their place.

    But the Oxford English Dictionary thinks the contrary. In 2011, a lot of Internet terms including, "LOL," "BPB," "OMD," and "BFF" were added to the dictionary, making these acronyms official parts of the English language. According to the dictionary writers, these terms aren't going anywhere anytime soon.

    The words you use in everyday life are a reflection of yourself; this is especially true on the Internet with the lack of interaction in real life. With the Internet and social media rapidly getting popular, soon your words may be all you have left. Make them good ones.

The huge billboard at the side of the highway is no joke; transporting firewood in certain areas is a crime, punishable by a four-thousand-dollar fine. The reason? Emerald Ash Borer disease, or EAB disease, a new addition to the long list of dangerous foreign pest infestations（虫害）on American soil. It was in 2002 when the Emerald Ash Borer beetle（甲虫）was first discovered in Michigan. Not long after, the pest was found in Ohio. Originally from Asia, this green beetle probably found its way to North America through a wooden box made of ash wood and immediately settled into a local ash tree. In little time, the species managed to kill millions of ash trees. 

To date, much work is underway to stop ash trees ending up in the same group as elm and chestnut trees, which are all dying out in many areas. Ash Borer Infestations are particularly troublesome because they are difficult to identify until the ash tree is heavily infested. In addition, other ash trees in the area surrounding the source will probably also be infested, making control a hard task. 

Researchers are working on many issues related to the control and removal of this harmful beetle. For example, it has been discovered that Asian ash trees are not destroyed by this native borer. It may be that, Asian ash trees have developed genes（基因）to protect them from the insect; therein, perhaps, lies the secret to controlling this pest. Insecticide（杀虫剂）treatment is also being explored on several fronts. Research is underway to determine which insecticides are proving to be the most successful. The proper application of the insecticides is being debated. 

However, all possible solutions require a great deal of study and research. In the meantime, careful steps must be taken. Methodical identification of infested trees is taking place. Identified trees are being cut down and destroyed to get rid of the beetle colonies（群）. In the end, this puts a huge drain（消耗）on city budgets, as tree removal can be extremely expensive. 

Even though it will be expensive to deal with this problem in the short term, the costs of doing nothing could be far higher, since we could lose an entire species of tree.