According to a recent survey, violence（暴力）did exist in schools. Students showed their fear and parents and teachers also 【小题1】（express）their great concern about it. Experts hope 【小题2】 whole society should pay more attention to the psychological health of teenagers.

Nowadays, school violence is a hot issue. I think this is a phenomenon（现象）, which 【小题3】（call）for our great concern. We should make every effort 【小题4】（prevent）violence happening at school for more and more students would drop out of school if their personal 【小题5】（safe）could not be guaranteed（保证）. In fact, violence can be learned. 【小题6】（actual）, children learn violent behavior from adults or from 【小题7】 they see on television or on the Internet.

If I meet with school violence, I will not answer violence with violence, for it will result in 【小题8】（much）fighting. I will tell my teachers and parents about it. I think they will help me deal with it well and they will protect me 【小题9】 the bad guys.

All in all, we students should behave 【小题10】（we） and keep away from violence.

   This is the best time and this is the worst time；this is the time of great material richness and this is the time of desert of the soul. Everyone seems to be rushing around for something but they have never fulfilled their dreams. Everyone tries to seek happiness but it seems to be nowhere to be found.

When asked "What on earth can make you happy？"，most modern men would give similar replies such as becoming extremely wealthy，or getting promoted in work and then becoming very wealthy. When asked "What will you do with your wealth？"，they would make a long list of things they have been longing for. However，haven't you noticed the multimillionaires are not as happy as we common guys suppose them to be？Haven't you noticed that the multimillionaire celebrities（名人）don't even enjoy the fundamental freedom of going shopping with their own families without being followed by annoying paparazzi？

If we focus our happiness on such big issues，we are bound to be unhappy all through our life，because those big issues might just occur to us once in a blue moon.

As Socrates（苏格拉底）once put it，"He is the richest man who is content with the least，for content is the wealth of nature. "But how can we" be content with the least"？If you pay due attention，you will find our life is loaded with little joys，sometimes too little to be noticeable. Stop once in a while in your rush to your destination，look around and you will see that there are always little things worth cheering for. You got an "A" in a test. Good！You listened to all inspiring lectures. Great！You offered a helping hand to someone who had a flat tire. Amazing！Your dream girl or boy greeted you with a sweet smile. Fantastic！Let's cheer for the little joys in life！Please keep in mind that never should we wait to be happy！

   Everybody sleeps，but what people stay up late to catch or wake up early in order not to miss varies by culture.

From data collected，it seems the things that cause us to lose the most sleep，on average，are sporting events，time changes，and holidays.

Around the world，people change sleep patterns thanks to the start or end of daylight-saving time（夏令时间）. Russians，for example，began to wake up about a half-hour later each day after President Vladimir Putin shifted the country permanently to“winter time”starting on October 26.

Russia's other late nights and early mornings generally correspond（相一致）to public holidays. On New Year's Eve，Russians have the world's latest bedtime，hitting the hay at around 3:30 a. m.

Russians also get up an hour later on International Women's Day，the day for treating and celebrating female relatives.

Similarly，Americans' late nights，late mornings，and longest sleep fall on three-day weekends.

Canada got the least sleep of the year the night it beat Sweden in the Olympic hockey（冰球）final.

The World Cup is also chiefly responsible for sleep deprivation. The worst night for sleep in the U. K. was the night of the England-Italy match on June 14. Brits stayed up a half-hour later to watch it，and then they woke up earlier than usual the next morning thanks to summer nights，the phenomenon in which the sun barely sets in northern countries in the summertime. That was nothing，though，compared to Germans，Italians，and the French，who stayed up around an hour and a half later on various days throughout the summer to watch the World Cup.

It should be made clear that not everyone has a tool to record their sleep patterns；in some of these nations，it's likely that only the richest people do. And people who elect to track their sleep may try to get more sleep than the average person. Even if that's the case，the above findings are still striking. If the most health-conscious among us have such deep swings（明显改变）in our sleep levels throughout the year，how much sleep are the rest of us losing？

Selfie

Social media and the mobile web have given rise to a strange phenomenon called the selfie. But not everyone is familiar with the term, so here’s a brief definition. 【小题1】 Everyone takes selfies, but the younger crowd seems to be especially involved in the trend. Some selfies are extreme close-ups, other show part of an arm held straight outward and a few of the great ones even feature the subject standing in front of a bathroom mirror so that they can get a full body shot of their reflection. 【小题2】 Since social media is the driving force of most selfie activity, younger kids interested in staying connected to their friends, boyfriends, girlfriends, etc. are more active in sharing selfies on a regular basis.

Who knows what kind of psychological factors drive any specific person to take a selfies and upload it to a social networking site. 【小题3】

Here's one. Not only are young people plugged into the web at all times, but they also have more self-esteem issues—and many of these teens or college kids might upload selfies to deal with their own self-consciousness. 【小题4】 When you feel good or look good about yourself, it's far too easy to reach for you phone and document it all through one or several selfies. Kids who are connected on a social network to someone they admire may be more driven to upload attractive selfies as a way to seek attention, especially if they're too shy to do it in person.

Besides, there are people who are bored at work, bored at school, etc. So they will take selfies because they have nothing else better to do. Last but not least, social media is about being social! If that means uploading as many selfies as possible, then so be it. 【小题5】 They just do it because they like to do it, it's fun, and it’s a cool way to sort of document your own life.

In recent years,American teens 【小题1】（earn） less than stellar（优秀的）scores on the national exam. A new analysis from the Center for American Progress argues for one simple step 【小题2】（help）raise these scores:Start school later in the day.

【小题3】（delay）start time by an hour across the country could improve students math scores up to eight 【小题4】（point）, the analysis says. That's almost one grade level of learning. The idea is that giving sleep-lacking teens more time to sleep 【小题5】 they hit the books will help them learn better.

In the previous study conducted in 2012 , middle school students 【小题6】 switched schedules to start school an hour later saw their test scores increase. And among them the low-performing students saw the 【小题7】（big）increase.

The Center for American Progress considered what would happen if those results 【小题8】（repeat） around the country.

“What we found is the impact 【小题9】 student achievement would be quite large,” Ulrich Boster, a senior fellow at the center, told The Huffington Post. “Starting school later could 【小题10】（significant）improve students' outcomes. ”