Neither rain nor snow nor the dark of night can separate Tennessee postal carrier “Mailman Mike” from his 4-and-a-half-year-old friend Carter Lawson – or keep them from their appointments.

    For the past nine months, the two have teamed up every day in the preschooler's Knoxville neighborhood for a few minutes of delivering mail together and chatting with fellow neighbors. Lawson wants to be a mail carrier when he grows up, and in an inspiring story, his mom told us how mailman Mike Crenshaw has been a role model to her son. “Anyone could just be like 'Go away, kid', but Mike has really gone out of his way to talk with Carter,” said Cassie Lawson of the United States Postal Service carrier. Little Carter even got his own uniform to match Mike's. “It's been really cute. I just couldn't believe he got a full mailman's costume,” the postal service employee said.

    “Every letter carrier has stops he looks forward to and this is the one I look forward to every day,” said Mike. “He's the end of my day, and the best part of my day. Not because it's the end, but because he's such a cute little guy.”

    The man and the little boy's connection isn't a surprise to Fredric Rolando, president of the National Association of Letter Carriers. “Kids respond to mailmen because letter carriers are a friendly, uniformed part of the neighborhood who bring something to their house every day, and are someone they come to recognize and trust,” Rolando said. “It's the same for the elderly, but in addition, letter carriers may be the only person they communicate with all day.”

    “Body clocks” are biological methods of controlling body activities. Every living thing has one. In humans, a body clock controls normal periods of sleeping and waking. It controls the times when you are most likely to feel pain. Eating, sleeping and exercising at about the same time each day will help keep body activities normal. But changes in your life—a new job, for example—destroy the balance and thus cause health problems. You could have difficult sleeping, for example. Scientists suggest that early afternoon is the best time of day for physical exercise. They say we are stronger and faster then. Later, about four o'clock, most people feel tired because of the drop of sugar level in the blood. Early afternoon also is a good time to do tasks about memory（记忆） and mathematics. If you must study, however, do it just before going to sleep at night. Scientists say you are more likely to remember information when there is a short delay（耽搁）between study and bed. Body clocks control all the activities from day to day. They also produce changes about every ninety minutes during the day. At the end of such a time period, our ability to think hard begins to become weak. That is the time we are most likely to day-dream. Within fifteen minutes, we are ready to go back to what we were doing.

    Good learners can inspire students or anybody to learn well. Here are some characteristics of good learners.

    Good learners are curious. They wonder about all sorts of things, often about knowledge beyond their areas of expertise(专长){#blank#}1{#/blank#} Finding out about something they didn't know satisfies them for the moment, but their curiosity is addictive.

    Good learners don't give up easily. A few things may come easily to learners but most knowledge arrives after effort{#blank#}2{#/blank#} They try to search out new information. They read, analyze, and evaluate the information they've found. Then they study more and work at what they don't understand.

    Good learners know that a lot of learning isn't fun. The journey to understanding generally isn't all that exciting{#blank#}3{#/blank#} Others need a tiresome attention to detail, and still others need periods of intense mental focus. Your backs hurt, your arms and legs get tired, and your coffee gets cold.

    {#blank#}4{#/blank#} There's always more to know. Good learners are never satisfied with how much they know about anything. They are pulled around by questions—the ones they still can't answer, or the ones without very good answers. Those questions follow them like day follows night with the answers bringing daylight.

    Good learners share what they've learned. Good learners are teachers committed to sharing with others what they've learned{#blank#}5{#/blank#}Good learners can also explain what they know in ways that make sense to others. They are connected to the knowledge passed on to them and committed to leaving what they've learned with others.

A. Good learners stay positive.

B. They write about it, and talk about it.

C. They love the discovery part of learning.

D. Good learners never run out of questions.

E. Some knowledge can broaden our views.

F. Good learners are willing to put in the time.

G. Some learning tasks require boring repetition.

    Lennon Flowers' mom was diagnosed with lung cancer when she was a senior in high school. This young woman gave up her big dreams to go to New York University and become an actor and instead entered the University of North Carolina so she could be close to home. Though she was surrounded by a community of friends, she rarely brought up her mom. “I became good at not talking about what was happening to me,” she explains. “I got really, really good at being really, really busy.”

    When her mother died during her senior year in college, many of Lennon's friends hadn't even known she was sick. In part, she said she kept silent about it due to her belief that it protected other people.

    Three years after her mother died, Lennon moved to Los Angeles for a job and, met Carla Fernandez. They had an immediate connection. Later, while apartment hunting side-by-side, Carla admitted that her father had died just six months earlier. Lennon shared her own story. A seed was planted.

    A couple of months later Carla organized a dinner party for five women, Lennon among them. All of them had lost a parent already though they were only in their 20s; all of them had felt alone in that loss.

    An emotional movement was born: The Dinner Party. Today, there are 31 “tables” across the country and the initial organization plans to create even more.

    Lennon says, “As people gather month after month, they branch out from talking about their lost loved ones and start exploring what those losses have taught them about the meaning of life.”

    A child who suffers bullying (霸凌) usually has low self-respect and their ability to learn and be successful at school is greatly lessened. Therefore, bullying must be stopped.

    The best and most obvious way to stop bullying in schools is for parents to change the way they treat their children at home. Of course, this is much easier said than done and everyone treats their children differently. Bullies, however, come from homes where physical punishment is used and children have been taught that physical violence is the way to handle problems and “get their way”. Bullies usually also come from homes where the parents fight a lot, so they have been modeled on such violence. Parental involvement is often lacking in bullies' lives and there seems to be little warmth.

    Early intervention (干预) is truly the best way to stop bullying, but parents of the victims or therapists (治疗师) cannot alter the bully's home environment. Some things can be done at the school level, however.

    Most school programs that address bullying use a multi-faceted (多方面的) method to the problem. This usually involves the advice of some sort, either by peers, a school adviser, teachers, or the principal.

    Hand out questionnaires to all students and teachers and discuss if bullying is occurring. Define exactly what constitutes (构成) bullying at school. The questionnaire is a wonderful tool that allows the school to see how widespread bullying is and what forms it is taking. It is a good way to start to solve the problem.

    Get the children's parents involved in a bullying program. If parents of the bullies and the victims are not aware of what is going on at school, then the whole bullying program will not be effective. Stopping bullying in school takes teamwork and concentrated effort on everyone's part. Bullying also should be discussed during parent-teacher conferences and PTA meetings. Parental awareness is the key.

    In the classroom setting, all teachers should work with the students on bullying. Oftentimes even the teacher is being bullied in the classroom and a program should be set up to teach about bullying. Children understand modeling behaviors and role-play and acting out bullying situations is a very effective tool. Have students role-play a bullying situation.

The Aviation Industry Corporation of China (AVIC), China's leading aircraft maker, created the country's first fully solar-powered drone (无人机). The large drone, Qimingxing 50, took off at 5:50 pm on September 3rd, 2022, from an airport in Yulin of Shaanxi Province and stayed in the air for 26 minutes before landing on the same runway. AVIC said that all systems of the unmanned plane functioned well on its first flight.

Powered by six electric motors with solar batteries, the drone is designed to conduct long-time operations in near space. Near space is that part of Earth's atmosphere at altitudes of 20 to 100 kilometers. It is above the top altitudes of commercial airliners but below orbiting satellites.

Qimingxing 50, also called "quasi-satellite", features high operational efficiency and eco-friendliness and will be tasked with high-altitude reconnaissance (侦察), forestry fire monitoring, atmospheric environmental inspection, aerial mapping, communication signal relay and other operations.

"Thanks to its capability to conduct very long endurance flights in near space, the drone can essentially become a substitute for satellites," a Chinese aerospace expert said. Satellite services are not always available due to the limited number of satellites and relatively fixed schedules of overhead passes. In time-sensitive missions, near-space drones can offset these disadvantages, the expert said, noting that satellite services could also be damaged in wartime, so near-space drones could replace them in this occasion.

The successful first flight of the Qimingxing-50 lays a solid foundation for the development of key technologies in the country's new energy field, the composite (复合的) material field, which will enhance China's ability to perform tasks in near space and over far oceans. AVIC will seize the opportunity to increase investment and speed up the development of large solar-powered unmanned aircraft.