The college entrance examination is just around the corner. Homework and tests will keep many of you up late at night, and you may plan to make up for your lost sleep during the weekends. {#blank#}1{#/blank#} is it useful? A study published in the journal Current Biology completely has changed {#blank#}2{#/blank#} people used to think. It shows that the habit of sleeping in on weekends doesn't fix the damage done by a lack of sleep during the week. Even {#blank#}3{#/blank#} (bad), it may damage your health.

Machines work well at a constant speed —and the faster the better.Whether they are spinning cotton {#blank#}1{#/blank#}dealing with numbers,regular,repetitive actions are what they excel at.

Increasingly,our world is being designed by machines and for machines.We adapt to machines and hold ourselves to their standards:People {#blank#}2{#/blank#}(judge)by the speed at which they respond, not the quality of their response."Always on"becomes something to take pride {#blank#}3{#/blank#}.When I ask people {#blank#}4{#/blank#} they are doing,they almost always answer "busy".Ticking things off the "to do"list becomes{#blank#}5{#/blank#}means of defining ourselves. {#blank#}6{#/blank#} (occupy)if not with work then with family or our social networks,most of us feel exhausted.

A few years ago,I became very interested in what it meant {#blank#}7{#/blank#}(pause).I started to notice where pauses show up in my own work and life.For example,I realized when I was writing,a short walk was a(n) {#blank#}8{#/blank#}(effective)way to focus than concentrating harder.The small walk acted as a pause, {#blank#}9{#/blank#}(enable)me to rest,reflect or refresh,appreciate and break a block in my {#blank#}10{#/blank#}(creative).I realized that pause is not nothing!

A minute eating ice-cream is not the same as a minute doing push-ups.Even time itself isn't a uniform raw material —as the physics of Einstein shows.

New discoveries and technological breakthroughs are made every year. Yet, as the information industry moves forward, many people in society are looking back to their roots in terms of the way they eat. A "locavore" movement has emerged in the United States. The movement supports eating foods grown locally and sustainably, rather than prepackaged foods shipped from other parts of the world.

Experts hold that eating local has many merits, and is expected to become a trend featuring sustainability. Erin Barnett is the director of Local Harvest, a company that aims to help connect people to farms in their area. By eating local, she argues, people have a better and more personal understanding of the impact their food consumption has on the rest of the world. "There is a way of connecting the point, where eating locally is an act that raises our awareness of sustainable living," Barnett says.

The United States' agricultural output is one of the highest in the world, says Timothy Beach, a professor of geography and geoscience at the University of Texas in Austin, Texas. "There's just no other place on Earth where the amount of input is so productive," Beach says of American agriculture. "Nobody can cut off the food we need."

However, the US food system is not sustainable because of its dependency on fossil (化石) fuels, says Beach. Equipment used on "extremely productive" farms is quickly consuming Earth's natural resources, particularly oil. Additionally, the production of agricultural supplements (补充剂)，such as fertilizer, uses large amounts of energy.

The world has used close to half of the global oil supply, Beach says, and the second half will be consumed at an even faster rate because of the growing population and economic development. Although many businesses are experimenting with wind, solar, and biofuel, Beach says there's nothing that we see on the horizon that can replace it. "There is no way on Earth we are using fossil fuels sustainably. Then we have to reconsider the impact of eating local," he says.

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.

It's always exciting to receive a letter in the mail. Even today, when the world is digitally connected, receiving an actual letter in your mailbox from a distant land is a great way for children to make new friends. 

The Peaceful Pen Pals Project is a beautiful initiative that combines global connection and self-expression. The project is part of the nonprofit Kids for Peace, founded by Jill McManigal and Danielle Gram in California, in 2006. Letter writing is most certainly hands-on and helps strengthen relationships throughout the world. 

The Peaceful Pen Pals Project is open to all children, ages 2 through 17. To date, there are 1500 children from 17 countries participating in the program. Each child is assigned a pen pal of a similar age. This establishes a point of connection right off the bat for the children and promotes a stronger bond. If the letter writers are in the same grade, they can chat about their schools, teachers, and what they are studying. They can also compare and contrast what different states or countries learn about and how the dynamics of the classroom are, whether socially or academically. 

Children may be more inclined to write about their issues if they feel like they are speaking to a peer in a similar situation. They also write about the local weather, who the letter writer lives with, and their favorite things to do at home. This will give the pen pal a good sense of the writer's home life, and they may relate to certain aspects, such as their parents, the number of siblings, or if they share a room. Although pen pals may live in different countries, they may find common ground according to this information. 

"Hearing first-hand stories from an international pen pal can encourage teens to take someone else's perspective and to think outside of themselves," writes Rebecca Fraser-Thill on Very Well Family. "It can also encourage interest in geography, politics, and history, and promote many key skills, including reciprocation, empathy and mutual concern. "

What Is a Superiority Complex?

A superiority complex is a behavior that suggests a person believes they are somehow superior to others. People with this complex often have overstated opinions of themselves. They may believe their abilities and achievements are better than those of others. However, the complex is believed to be a defense system for feelings of inadequacy that we all struggle with.

It is unclear why a person develops a superiority complex. Multiple incidents may be the root cause. For example, it may be the result of many failures. A person tries to complete a specific goal or achieve a desired outcome, but they don't succeed. They learn to handle the anxiety and stress of the failure by pretending to be above it. If they feel protected from their failures in this way, they may repeat this behavior in the future.

These behaviors can begin at an early age. When a child is learning to cope with challenges, they may learn to control feelings of inadequacy or fear. A superiority complex may develop. Likewise, it may also happen later in life. As teens and adults, a person has many opportunities to try new things among new people. If these situations are not successfully coped with, a person may develop a superiority complex to overcome feeling isolated.

People with a superiority complex are unlikely to be a threat to anyone's physical health. However, the continuous lies and overstatements can become annoying to others and may negatively affect relationships. It can push away other people in your life and shrink your social circle. If you are in a relationship with a person who you think has the issue, encourage the person to seek help. For example, never hesitate to reach out to mental health professionals. They can find healthier ways to deal with hidden feelings.