Last year I was put into a lower­level math class at school. The reason I was in this class had nothing to do with my intellect (智力) or maths skills. I am blind.

The only problem with being in this class was that I was surrounded by “at­risk” students. These were kids who did not do well in school and they were constantly in trouble with the school and the law.

    One Tuesday morning, I went to a Christian Student Union meeting before school. There was a guest speaker there that day talking to us about praying (祈祷) for our enemies. I began to think about this. As I considered the idea, I prayed and asked God how I could pray for the kids in my class. I had forgotten that they weren't bad kids; they were just lost.

    At first, the prayers were mechanical. When I would hear their voices in class, I would pray, “Dear God, please bless so­and­so...” But as I continued, I began to think of the kids more often, and in my quiet time at home I would ask God to bless (保佑) the rest of my classmates.

    As time went on, my classmates became more than just annoying kids to me. There was something growing inside my heart for them, something that wasn't there before. They began to feel like family, and I was learning to love them in a way I never thought possible.

    I now see that praying is such a powerful act. Prayer is the most powerful tool a Christian has. When I pray for those around me, it also blesses my life, and it changes my opinion of others. I realized I needed God's blessings to see the world through loving eyes. The prayers I said for others turned out to help me the most.

    There was a doctor in our city who was famous for his skills. Once he received a little child who was badly ill. Thanks to his skill and care, his young patient got well and was soon able to get up and run about again.

    The child's mother was very much thankful to the doctor, and she visited him to thank him for what he had done for her child. “Doctor,” she said, “you have saved my little son. I don't know how to thank you enough. I feel that money alone cannot repay you, so I have made this little purse with my own hands, as a sign of my gratitude. I hope you will accept it.” The doctor stood up and said coldly, “Madam, a little present like that is very nice between friends, but a doctor needs to be paid properly for what he has done.” The lady was so surprised and hurt so much that she could not reply for a moment. Then she said quietly, “Perhaps you will tell me how much your fee is?”

    “Fifty pounds”, he answered.

    The lady opened the little purse and took out four fifty-pound bank notes. She handed one of them to the doctor, and put the other three back into the purse. She put the purse into her handbag and, saying good bye to the doctor, went out of the room.

    Thirteen-year-old Kaylee has a lot of friends—532, actually, if you count up both her Instagram followers and Facebook friends. And she spends a lot of time with them.

    But is it possible that Kaylee's online friendships could be making her lonely? That's what some experts believe Connecting online is a great way to stay in touch, they say. However, some experts worry that many kids are so busy connecting online that they might be missing out on true friendships.

    Could this be true? During your parents' childhoods, connecting with friends usually means spending time with them in the flesh. Kids played Scrabble around a table, not Words With Friends on their phones. When friends missed each other, they picked up the telephone. Friends might even write letters to each other.

    Today, most communication takes place online. A typical teen sends 2,000 texts a month and spends more than 44 hours per week in front of a screen. Much of his time is spent on social media platforms like Instagram and Facebook.

    In fact, in many ways, online communication can make friend ships stronger, “There's definitely positive influence. Kids can stay in constant contact, which means they can share more of their feelings with each other,” says Katie, co-author of the App Generation.

    Other experts, however, warn that too much online communication can get in the way of forming deep friendships. “If we are constantly checking in with our virtual worlds, we will have little time for our real world friendships.” says Rosen, a professor at California State University.

    Rosen also worries that today s kids might mistake the “friends” on the social media for true friends in life. However, in tough times, you didn't need someone to like your picture or share your tweet. You needed someone who would keep your secrets and hold your hand. You would like to talk face to face.

    Many studies have hinted(暗示) that alcohol, in moderation, can do a heart good. But new research suggests that moderate drinkers are no more likely than non­drinkers to have clear arteries(动脉).

    The scientists looked at almost 2,000 patients who underwent CT test. Overall, there was no association between people's drinking habits and their heart diseases. Researchers said an advantage of the new study is that it used objective measurements.

    “No prior studies have assessed the relationship between alcohol consumption and the presence of heart disease,” said lead researcher Dr Julia Karady. "We could not find any relation between the presence of heart disease and alcohol consumption," Karady said. At the same time, she added, there was no evidence that heavier drinking raised the risk of heart disease.

    However, groups like the American Heart Association(AHA) warn against excessive drinking, because it can raise blood pressure and contribute to heart failure and other problems.

    In general, "moderate" is defined as no more than one glass of alcohol a day for women, and no more than two a day for men. But those studies do not prove that alcohol, itself, protects the heart—in large part because alcohol also carries risks.

Owls and Larks

    Larks are most likely to be healthy, wealthy and wise, according to the old saying.

    But those who are early to bed and early to rise do not always have the upper hand, researchers say. They have found that night owls are generally brighter and wealthier than those able to get up early in the morning.

    Experts from the University of Madrid carried out tests on around 1,000 teenagers and found that those who preferred to stay up late proved the kind of intelligence associated with honored jobs and higher incomes. "Larks" or "morning people", however, often acquired better exam results, possibly because lessons are held at the wrong time of day for night owls. The researchers examined the habits and body clocks of the youngsters to determine whether they liked to stay up late and sleep later in the morning, or preferred to go to bed early and were at their peak in the morning. School performance and inductive(归纳的)intelligence, or problem solving, were measured and academic grades in the major subjects were also taken into account. The results showed that evening types scored higher than morning types on inductive reasoning, which has been shown to be a good estimate of general intelligence and a strong indicator of academic(学术的) performance. They also had a greater capacity(能力) to think conceptually(概念地) as well as analytically. Such abilities have been linked to innovative(创新的) thinking, more admired occupations and better incomes.

    Famous night owls include President Trump, Obama, Charles Darwin, Winston Churchill, Keith Richards and Elvis Presley. George W. Bush, who is regularly in bed by 10 p.m., Thomas Edison, Napoleon, Condoleezza Rice, who wakes at 4:30 a.m., and Ernest Hemingway are among those known as larks. Jim Horne, professor of psychophysiology at Loughborough University, said, "Evening types tend to be the more active and creative types, the poets, artists and inventors, while the morning types are the deducers(推导者), as are often seen with civil servants and accountants." A previous study of US Air Force recruits found that evening types were much better at thinking to solve problems than larks.