Have you ever asked yourself why children go to school? You will     1     (probable) say that they go to learn languages, history, science and some other knowledge. That’s quite true, but do you know why they learn these     2     (thing)?

We send our children to school to prepare them    3     the future when they grow up and have to work for     4     (they). Nearly everything they study at school has some practical use in their life. But is that     5     only reason why they go to school?

Actually, there is more in education than just    6     (learn) facts. We go to school above all to learn how to learn, so that when we graduate we can continue to learn.     7     a man really knows how to learn, he will be     8     (success). Because when he has to do something new, he will not only be able     9     (do) it well himself, but he will also be able to teach others how to do it in the     10     (good) way. So the purpose of schools is not to teach languages, history, science, etc., but to teach students the way to learn.

2 . Many of us live with a roommate at some stage. Sometimes, there can be problems. Who hasn’t had an argument about whose turn it is to take out the rubbish or who should be the one to clear up after dinner? However, living with another person also comes with many benefits.

You know that there’s always someone else around, which can help you feel safer. There is always someone to talk to, so you never feel lonely. Besides these obvious benefits, there are some you may not notice. For example, we’re actually more likely to eat healthier food when living with others.

To examine the effect of living alone, Australian university researchers did much research and found that people living alone tended to eat less fresh food, which can have a significant negative effect on long-term health. However, those living with others generally benefited from a more varied diet compared to those living alone.

What could explain these findings? The researchers believe the social and cultural roles played by cooking, food preparation and eating may be important considerations. For example, those living with friends have someone else to go shopping with, and thus are likely to buy higher-quality fresh food regularly.

Cooking skills may be another factor. If people living alone find they do not have the knowledge required to prepare a particular dish or cook a certain food, they may fall back on ready-made, less healthy food. However, if they live with at least one other person, they may be able to ask for help.

In addition, people living alone can eat whatever they want at any time of the day or night. However, it’s helpful to have someone around who questions your decision to eat frozen pizza at 3 am. In other words, roommates can draw your attention to unhealthy routines.

So, if you now live alone and find yourself fighting a losing battle against poor eating habits, why not consider sharing a home with someone else? You could encourage one another to be healthier and more well-being.

4 . Claire Wyatt, a 24-year-old British volunteer, led eight Cambodians living with disabilities on a 155-mile bike ride from Phnom Penh, the nation’s capital, to Siem Reap to raise money and deliver supplies to those in need in the coronavirus pandemic(新冠病毒大流行).

“Leading this trip was an incredibly special experience for me,” said Claire. “Not only was I encouraged by the determination of each and every rider, but also the team taught me every day not to focus on their disability.”

When she was first asked to lead the trip, Claire admitted, she was feeling nervous about her team traveling such a distance in just a few days because cycling with a disability can come with added physical and emotional challenges.

One team member named Dy, who lost an arm in an accident, biked using just one arm to balance. Another named Vulta could only pedal on one side due to polio(小儿麻痹). Despite all the difficulties, Claire realized quickly that she didn’t have to worry about her team. She saw them deal with rough area that she had seen abled cyclists give up on before.

The volunteers covered the distance in just four days, not only helping so many people across the country, but also overcoming huge difficulties to get there.

“The best thing about this ride is that the riders have all volunteered their time to do this. They are so enthusiastic about Cambodia and raising money for others in need,” said Claire. “The money raised will feed 99 families in Siem Reap.”

Claire recalled her favorite moment of the experience, when one of the cyclists pushed an exhausted teammate up a hill for 2 miles. “One moment that stood out for me was when Naret, our only female rider, was feeling tired,” she said. “Her fellow rider gently put his hand on her back and pushed her for 2 miles! They were encouraging each other to push through the tiredness.”

It is in your daily life that you always get into a situation     1     your parents control hundreds of things for you when you are     2     kid, such as the clothes you wear, the food you eat, where you go and whatever can keep you     3    (comfort). It is a good thing. Kids need this kind of protection and help because they are not old enough to take care of     4    (they) and make decisions     5    (correct). But with you growing older, the part of being a teen is developing your own identity, which is different     6     parents’. Different attitudes towards events like parties may lead to     7    (argument), because your parents will always be concerned about you and keep you safe, no matter how old you are. As a result, your parents felt it hard     8     (get) used to the new situation without     9     (know) your latest news. What kids should keep in mind is that in most cases, your parents can understand what you are going through because they     10     (be) teens once.

6 . The rapid growth in skyscrapers worldwide has led to a high demand for window washers since most of these buildings feature large glass panes (窗格) to highlight their breathtaking views.

Though the job offers a handsome salary, dangling alongside multi-story structures is dangerous, and accidents are not uncommon. However, if Israel-based company Skyline Technologieshas its way, the dangerous chore may soon be taken care of by Ozmo, an intelligent window cleaning robot.

"As a society, we've become too comfortable watching people hanging off the sides of 30-story buildings," says Yaron Schwarez, co-founder and CEO of Skyline Robotics. "No salary could justify allowing people to put their lives in the hands of a system of ropes."

Much like humans, Ozmo is placed on platforms suspended from the buildings and uses its arms and brushes to clean the dirt on the glass panes. A 3D map of the building's surface programmed into its system allows the robot to skillfully handle obstacles as it moves up and down the structure. Computer vision and touch sensors enable it to move out of the way in case of unexpected events, such as the sudden opening of a window.

Unlike current window washers, the robot cleaner does not require soap to clean the glass. Instead, it uses distilled water (蒸馏水) and a process called dirt absorption to do the job. Schwarez explains, "We use pure water to absorb and remove the salts, the minerals, the oils, and the dirt from the building. We are environmentally-friendly."

Ozmo is also expected to be much more efficient than humans. While it currently takes three cleaners 480 hours each to clean the windows of a 40-story glass building, the robot will single-handedly complete the task in just 80 hours. However, unlike other robots, Ozmo will not replace human workers. It will only make their jobs safer by lifting them to the role of supervisors, who will be remotely controlling the operation from below.

Whether Ozmo, which is still undergoing testing, does as good a job as human remains to be seen.

7 . Today's world is not an easy adjustment for young adults. Key skill set for success is persistence (毅力), a characteristic that researchers say is heavily influenced by fathers. Researchers from Brigham Young University discovered that fathers are in a unique position to help their adolescent children learn persistence.

BYU professors Laura Padilla-Walker and Randal Day arrived at these findings after following 325 American families over several years. And over time，the persistence gained through fathers led to higher achievement in school.

"There are relatively few studies that stress the unique role of fathers，"Padilla-Walker said. "This research also helps to prove that characteristics such as persistence-which can be taught-are key to a child's life success.”

Researchers determined that dads need to practice an "authoritative" parenting style. Authoritative parenting is not authoritarian:rigid，demanding or controlling. Rather，an authoritative parenting style includes some of the following characteristics:children feel warmth and love from their father；responsibility and the reasons behind rules are stressed children are given an appropriate level of autonomy(自主权).

In the study，about 52 percent of the dads exhibited above-average levels of authoritative parenting. A key finding is that over time，children raised by an authoritative father were significantly more likely to develop persistence，which leads to better outcomes in school.

This particular study examined 11 to 14-year-olds living in two-parent homes. Yet the researchers suggest that single parents still may play a role in teaching the benefits of persistence，which is an avenue of future research.

8 . Hundreds of children are being treated for sleep problems in Wales every year. In some cases，babies，infants (婴儿)and teenagers have been admitted to hospital in north Wales alone.

The Children’s Sleep Charity said many children were suffering from lack of sleep mainly because of technology use. Public Health Wales said sleep was as important to a child’s health as healthy eating and exercise，and children with poor sleep patterns were more likely to be fat.

Statistics obtained (获得) under the Freedom of Information Act by BBC Wales found at least 408 children have been admitted to hospitals across Wales suffering from sleep disorders since March 2013.

Children aged between 0 and 4 made up the highest number of inpatients (住院病人)，with some newborns being treated for sleep-related problems from the day of birth.

Vicki Dawson，who set up the Children’s Sleep Charity (CSC)，said sleepless nights were putting both children and parents in anxiety. “Their weight and growth may also be affected as well as their mental health，”she said.

Teachers said children showing signs of sleep shortage and tiredness in class were a concern as they couldn’t concentrate for long periods.

Psychologist Amy McClelland，of Sleep Wales，saida common problem was that children were “over excited”before bed and that families should get back to basics. “Think 1950s family home. Dinner as a family，read，chat，a film maybe，lights off and then bed. ”She added.

China, once famous for four inventions in ancient times, has once again showed its ability     1     (change) the world with its “new four great inventions”: electronic payments, shared bicycles, high-speed railways and online shopping.

With electronic payments, people can buy and eat     2     they want simply with a tap of their phones. Electronic payments are so convenient that they are really popular with folks. Even pancake sellers are found     3    (use) Alipay. The bikes themselves are not new,     4    the operating model of bike-sharing is innovative. Chinese companies have surprised the world with the business model of bike-sharing which     5     (include) high technologies, and are entering overseas markets such as Singapore and Britain. The launch of high-speed trains has a       6    (big) influence on people’s choice of traveling than expected. The newly launched Fuxing Hao can travel at an    7     (amaze) speed of 300 km/h, making the 1,318km joumey in five and three-quarter hours. China also takes the lead in online shopping with various e-commerce platforms.     8     the 11.11 shopping day in 2018, sales hit 10 billion yuan in the first 2 minutes after midnight and     9    (reach) 213. 5 billion by the end of the day.

Thanks to the large amounts of capital (资金) China has invested in encouraging inmovation (创新), China has entered     10     new innovative time.

10 . Eating chips, chocolates and cakes may damage a child’s intelligence, according to researchers at Bristol University. Their study suggests a link between diet high in processed(加工的) food and a slightly lower IQ. Writing in the journal of Epidemiology and Community Health, they suggest poor nutrition may affect brain development.

The eating habits of 3,966 children taking part in the Avon Longitudinal Study of Parents and Children were recorded at the ages of three, four, seven and eight and a half. The researchers said three types of diet appeared: processed diet which was high in fat, sugar and fast food, traditional diet of meat, potatoes and vegetables, and healthy diet of salads, fruit and fish. The children all took IQ tests when they were eight and a half.

The researchers found a link between IQ and diet, even after taking into consideration other factors such as the mother’s level of education and social class. Diet high in processed food at the age of three was linked to a slightly lower IQ at the age of eight and a half, suggesting early eating habits have a long-term influence. Dr Pauline Emmett, who carried out the study at Bristol University, said, “Brain development is much faster in early life, and it’s when it does most of its growing.”

Although the relationship between diet and IQ was very strong, the influence was quite small. Processed food was linked with IQs only a few points lower. Experts in the field said the results had shown common sense was right. Fiona Ford, spokesperson for the British Dietetic Association, said, “It’s well worth looking at the long-term influence of diet, for everyone’s familiar with the short term. The research agrees with the type of advice we already know, but that’s not always enough. Sometimes a society has to help a person change; we need to educate more young parents about healthy eating.”