Taylor Swift was born on December 13, 1989, in Wyomissing, Pennsylvania. Swift's family ran a farm. “I had her sitting on a small horse when she was nine months old,” said Swift's mother. “If my dream had gone well, she'd be in a horse show right now.” The only obvious forerunner (先驱) of Swift's musical talent was her grandmother, an opera singer.

    That talent showed itself early: when the family went to see a Disney musical film, Swift would come out of the theater singing all the songs correctly. At the age of 11, she sang “The Star-Spangled Banner” at a Philadelphia 76ers game. The experiences during her pre-teen years encouraged the creativity to go with Swift's talent. As a child, she attended the academically competitive Wyndcroft School in Pottstown, but then switched to public schools in Wyomissing. Although it was her hometown, she didn't know any of her classmates, and she was terrified. Swift began to understand the storytelling feature of country songs, and put her feelings into songs of her own.

    One of her future hits, “The Outside”, was written when she was only 12. “I wrote that about the scariest feeling I've ever felt: going to school, looking at those faces, and not knowing who you're gonna talk to that day,” she said. “In the music, I could never feel the kind of rejection (拒绝) that I felt in middle school.” Swift's parents quickly realized that they had someone special on their hands. They sold their farm when she was 13 and moved the family to Hendersonville, Tennessee.

    Swift had the ability, above all, to put feelings into words with accuracy (准确) far beyond her years. In “Our Song” she wrote, “Our song is the slamming screen door, going out late, tapping on your window.” In the summer of 2006, “Tim McGraw” came out, and almost from the beginning the 16-year-old Taylor Swift was a star.

Hobbies Help Cure Addiction to the Internet

    While some parents have expressed concerns about the amount of time their children spent surfing the Internet during the summer break from school, it wasn't a problem for Yin Qiming.

    Instead, the 37-year-old Shanghai resident and his daughter divided their vacation between cyberspace and the 8-year-old's other interests.

    “My daughter has many hobbies and I and her mother respect her choices, so we accompany her to classes she enjoys, such as learning to play the drums and drawing,” he said.

    “She loves to play outside with her friends, so she doesn't think the Internet is a must-have thing in her life.”

    Yin added that he rarely imposes a time limit on his daughter's online activity.

    “She sometimes uses WeChat (a popular instant-messaging tool) on my mobile phone, but only to contact her mother,” he said. “Once she has her own plans every day and realizes that the internet is just a part of life, she won't become addicted to it.”

    Li Lin, a primary school teacher from Liaoning province, expressed a similar opinion.

    “We do some homework online, including reciting stories, and the children use the Internet frequently every day of their lives,” she said, noting that the children's online activity is limited to 30 minutes a day at school.

    “We should make better use of the Internet to provide children with more knowledge and help them to grow up,” said Li, who has a 10-year-old son.

    The key to preventing children, especially those at primary and middle schools, from becoming addicted to the Internet is to limit the time they spend online and to ensure that they know cyberspace cannot replace traditional forms of communication, she said.

    Mao Feizhu, a psychologist from Fujian province in southeast China, said people overestimate the influence of the internet.

    “Many people, even some parents, believe the Internet plays a big role in our daily lives, and many things can be completed online, but that's not completely right,” she said.

    “We can use social applications to talk or play basketball games, and even share what we are thinking about, but sometimes it's impossible for our emotions to be accurately reflected in this way. What children need is emotional communication and real physical exercise. After all, love cannot be bought on the net,” she said.

    Perhaps, the best way to stop young netizens spending too much time online is to encourage their other interests but also accompany them when they go online: “We should use the Internet, not become its slaves.

    Angad Rekhi, a graduate student and an assistant professor of electrical engineering, has developed a wake-up receiver. This wake-up receiver has many potential applications, particularly in designing the next generation of net worked devices, including so called "smart" devices that can communicate directly with one another without human intervention (介入).

    Once attached to a device, a wake-up receiver listens for a unique ultrasonic（超声波）pattern that tells it when to turn the device on. It needs only a very small amount of power to maintain this constant listening, so it still saves energy overall while extending the battery life of the larger device. A well-designed wake-up receiver also allows the device to be turned on from a significant distance.

    Given the increased interest in networked devices, researchers and industry organizations are starting to define what features and techniques will become standard. Regardless of whether this ultrasound wake-up receiver is among these standard designs, it is likely wake-up receivers of some kind will be combined into commercial applications soon.

    By comparison, the ultrasound wake-up receiver requires a battery but has much greater range than the wirelessly powered devices, while still maintaining a long lifetime due to extremely low power draw. These two technologies-wireless power and wake-up receivers-would likely serve different purposes but both indicate at a turning point in devices that make up the Internet of Things.

    "In light of a long-promised future where interconnected, autonomous, widespread and unremarkable technologies make life easier, the networked devices available now, like video doorbells and app-enabled lights, seem like rather slight advances." the researchers said. They believe technologies like theirs could help cross the gap between the Internet of Things as we know it and the Internet of Things at its best-whatever that may be.

    Considering that Sundarbans National Park is situated in thetropics, Septemberto March is the ideal time to come here. April, May and June are too hot while July andAugust often bring heavy season winds that limit travel and don't make for avery pleasant sightseeing experience. You can really enjoy doing lots ofcharming things in the Sundarbans during September to March.

    Take a river tour

    Most tourists who explore the Sundarbans arrive in KhulnaCity first. Fromthere, youcan join a boat tour that travels south along the Ganges River through miles ofpreserved forest all the way to Kotka, where there is a beautiful beach alongthe Bay of Bengal.

    Visit a bird habitat

    This bird habitat is a nesting place for dozens of tropicalbirds found in the Sundarbans. The best way to observe these birds isclimbing up the Sajnekhali Watchtower. If you're lucky, you'll also catch the famed BengalTiger making its rounds through the swampy jungle.

    Visit the Mangrove(红树林)Interpretation Centre

    If you wish to spend some time indoors out of the sweatyheat, goto the Mangrove Interpretation Centre. This place is very educational withmany posters, mapsand exhibits showing the wildlife and varieties of mangrove plants found withinthe park. You'llalso get to see crocodiles in a small pool.

    Take a tour of local villages

    Experience village life that has largely remained unchangedfor centuries. Inthis vast tropical region, there are villages made up of variousethnic groups who rely on fishing, farming and working in the localthrough growing tourist industry for their livelihoods. The Sundarbans is a UNESCO worldheritage site where you can visit villages and talk to locals,who will gladly sharetheir culture with you.

    On April 2, we said goodbye to Tiangong I, China's first space lab. According to the China Manned Space Agency（中国载人航天）, Tiangong I re-entered the Earth's atmosphere （大气层）and fell into the South Pacific Ocean.

    There are many spacecraft that are still in orbit above the Earth. They are flying at heights ranging from 300 to 1,000 kilometers. After finishing their trips, they will all re-enter the Earth's atmosphere like Tiangong I.

    There are two types of re-entries：controlled（受控的）re-entry and uncontrolled re-entry.

    Some satellites（卫星）and manned spacecraft come back to the Earth in a controlled re-entry. Scientists calculate（计算）the path of the falling spacecraft and its speed. They can guide the spacecraft to fall in a chosen area. In 2017,Tianzhou I, China's first cargo（货运）spacecraft, was directed to fall in the South Pacific Ocean.

    Some spacecraft may have problems while in space, or are simply no longer usable after a certain amount of time.  These craft come back in an uncontrolled re-entry.  It is hard to tell when and where these spacecraft will fall until the last few hours. The US space station Skylab came back partially uncontrolled in 1979. Parts of the station fell in western Australia, but no one was injured.

    During re-entry, most of the spacecraft will burn up while passing through the Earth's atmosphere. Only a small amount of the debris（碎片）will reach the ground.

    The debris typically ends up falling into the ocean, China Daily reported. Tiangong I weighs about 8.5tons. The amount of debris that falls to the Earth might be about 1 to 1.5 tons, the Beijing News reported.  That is about the same weight as a car.

    "It can't be done." Boyan Slat heard this over and over when he first proposed a way to clean up millions of tons of plastic polluting our oceans. Almost anyone else would have given up in frustration and despair. But 20-year-old Slat hasn't: been discouraged but committed to his dream. "Human history is basically a list of things that couldn't be done, and then were done," he says. Today, slat and his team at The Ocean Cleanup are well on their way to proving the critics wrong. Good news for the planet.

    ⑴_______.

    Slat, who grew up in the city of Delft in the Netherlands, was on a diving trip in Greece three years ago when he was deeply impressed by plastic, "There were more plastic bags than fish," he says. "That moment I realized it was a huge issue and that environmental issues are really the biggest problems my generation will face."

That fall, Slat, then 17, decided to study plastic pollution as part of a high school project. Soon, Slat learned that no one had yet come up with practical way to clean up this massive garbage patches. Most proposed solutions involved "fishing" up the plastic using ships equipped with nets﹣which, as Slat discovered, would likely take more than 1,000 years, cost too much, let off too much sea life along with the trash.

    Slat proposed an alternative that mostly avoided these problems﹣a solar﹣powered system using a floating plastic tube which will go around the garbage and trap it is 600 meters long, A big screen hangs down from it, about three metres into the water. Wind, waves and ocean currents will push the trash toward the tube. （Fish can swim under the screen） A ship will pick up the trash and take it back to the shore to sort and recycle it into oil and other products. Best of all, Slat predicted his system could clean up the North Pacific Garbage Patch between California and Hawaii where a lot of floating garbage exists, within five to 10 years.

    ⑵________.

    The following, Slat entered the aerospace engineering program at the Delft University of Technology and officially announced his ocean cleanup concept at TEDx Delft. But nothing much moved forward,

    Slat found himself continually absent﹣minded in classes, looking for ways to improve his concept. "It wouldn't let go. I finally decided to put both university and my social life on hold to focus all my time on developing this idea. I wasn't sure if it would succeed, but considering the scale of problem I thought it was important to at least try." He says.

    With this family's blessing, Slat began in earnest organizing a team of volunteers and employees for The Ocean Cleanup, which now numbers about 100.

    ⑶_______.

    In answer to opposition, Slat and his team raised ＄100,000 from a crowd funding campaign and began testing a 40﹣meter collecting barrier near the Azores Islands last March. In June, they released a 500+ page possibility study.

Over the next three to four years, Slat will push toward a fully operational large﹣scale project by testing a series of longer and longer barriers. He's currently seeking to crowd fund ＄2 million to finance it. Incidentally, The Ocean Cleanup is also working on a plan to stop plastic from washing into the oceans in the first place. "It's just the other problem that is equally important." Slat says. "It's something everyone is able to help with, and we also have some technologies in the pipeline."

    As for school, Slat doesn't miss it﹣except maybe for the social﹣part, which he hopes to （恢复） a bit once his team takes on more of the workload. "I don't have time for things like that right now, but I really can't complain. I can imagine doing something more fun than being able to have an idea and then actually making it into a reality." he says.