Nowadays kids can access various websites. However, they also need to aware of some websites that may bring them bad influences. There are a lot of good websites for kids that can be useful for their overall development.

    Kids, national geographic

    National Geographic Kids is one of the best websites for kids to stay updated with latest information on a wide range of topics. Every kid will surely find something important when he/she visits this website. It covers exciting information about activities, animals, education, fun and intellectual games, people and places, science and technology, stories, etc.

    Factmonster

    We know how much kids hate to study. If you also find it hard to make your kids study, you can ask him to visit Factmonster. This website is a fun way to study on all the school subjects. Kids will not have any punishments or long hours of lectures, but instead they will learn in a free way to study on their own!

    Clubpenguin

    Clubpenguin is an entertaining website, operated by Disney. As the name suggests, kids need to create a penguin alter ego (密友)and play online games and chat with fellow penguins, or friends. So, if you are looking for the chat rooms for kids only, then club penguin is a great choice for you! The best part is that all the chat information and history can be monitored by parents, in any time they want. Along with online chatting with friends, your kids can also participate in various activities that take place on club penguin, like drawing, painting! etc.

    Houses have been getting progressively "smarter" for decades, but the next generation of smart homes may offer what two Case Western Reserve University scientists are calling an "Internet of Ears."

    Today's smart home features appliances, entertainment systems, security cameras and lighting, heating and cooling systems that are connected to each other and the Internet. They can be accessed and controlled remotely by computer or smartphone apps.

    But a group of electrical engineering and computer science professors in the Case School of Engineering have been experimenting with a new suite of sensors (传感器). This system would read not only the vibrations (震动), sounds and even other movements associated with people and animals in a building, but also any slight changes in the existing electrical field.

    While there still maybe a decade or so away, the home of the future could be a building that adjusts to your activity with only a few small, hidden sensors in the walls and floor with-out the need for monitoring cameras.

    "We are trying to make a building that is able t0 61isten' to the humans inside," said Ming-Chun Huang, an assistant professor in electrical engineering and computer science. "We are using principles similar to those of the human ear, where vibrations are picked up and our algorithms (计算程序) recognize them to determine your specific movements. That's why we call it the 61nternet of Ears'. "

    “There is actually a constant 60 Hz electrical field all around us, and because people are somewhat conductive, they short out the field just a little," Huang said. "So, by measuring the disturbance in that field, we are able to determine their presence, or even their breathing, even when there are no vibrations associated with sound.”

    Huang said they have used as few as four small sensors in the walls and floor of a room.

    As for privacy concerns, the system would not be able to identify individuals, although it could recognize people's different ways of walking.

    Teens naturally ask parents for money for material things and entertainment. But as the need becomes more frequent, why not get a job so you can earn your own money? Working for your own money will give you a sense of accomplishment and the satisfaction of a job well done.

    Babysitting is a suitable job for teens. They are best suited as a mother's helper while the mother is working in another part of the house. Babysitting is not a job for girls alone. Boy babysitters are popular with families of boys. Parents rely on friends and neighbors' recommendations. Word of mouth is your best form of advertising.

    Pet-sitting involves caring for people's pets while the owners are on vacation or away for the day. A pet-sitter will be responsible for giving fresh food and water, walking dogs and cleaning out cat litter boxes. Although the pet-sitter does not spend the night, he is there often enough to bring in the mail, water plants and take the garbage out. Create a flyer with your name, prices and references, and pass it out to the families in your neighborhood.

    Yard work can be a seasonal job. Spring cleanup is needed for flower beds and preparing the yard for summer. Summer is the busiest time for yard work with lawn mowing (割草坪),edging and trimming(修剪) bushes. Fall is the time for sweeping leaves and planting seeds for spring. If you live in a northern climate, there may be snow that needs shoveling.

    Odd jobs can mean a variety of things, including painting, washing the pet, weeding the garden, cleaning out the basement, or helping to serve dinner at a party. Doing odd jobs may be a good match for someone with a busy schedule. Most odd jobs only take a few hours to complete.

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    On March 25, 2010, Kate and David heard the words every parent dreads: Their newborn wasn't going to make it. Their twins­a girl and a boy­were born two minutes apart and 14 weeks premature, weighing just over two pounds each. Doctors had tried to save the boy for 20 minutes but saw no improvement. His heartbeat was nearly gone, and he'd stopped breathing. The baby had just moments to live.

    "I saw him gasp (喘息), but the doctor said it was no use," Kate told the Daily Mail five years later. "I know it sounds stupid, but if he was still gasping, that was a sign of life. I wasn't going to give up easily."

    Still, the couple knew this was likely a goodbye. In an effort to cherish her last minutes with the tiny boy, Kate asked to hold him.

    "I wanted to meet him, and for him to know us," Kate told Today. "We'd resigned ourselves to the fact that we were going to lose him, and we were just trying to make the most of those last, precious moments."

    Kate unwrapped the boy, whom the couple had already named Jamie, from his hospital blanket and asked David to take his shirt off and join them in bed. The first-time parents wanted their son to be as warm as possible and hoped the skin-to-skin contact would improve his condition. They also talked to him.

    "We were trying to persuade him to stay," Kate told the Daily Mail. "We explained his name and that he had a twin that he had to look out for and how hard we had tried to have him."

    Then something miraculous happened. Jamie gasped again­and then he started breathing. Finally, he reached for his father's finger.

    The couple's lost boy had made it.

    "We're the luckiest people in the world," David told Today.

    Eight years later, Jamie and his sister, Emily, are happy and healthy. The couple only recently told the kids the story of their birth. "Emily burst into tears," Kate said. "She was really upset, and she kept hugging Jamie. This whole experience makes you cherish them more."

I was asked by a reader recently why so many animals seem to have pink ears，when their bodies are all different colours? The truth is that most animals actually don't have pink ears. Let us explain.

Near the equator (赤道), where the climate is hot, animals are likely to have darker skin, including on their ears. Think of the African elephant, which has quite dark ears. In colder climates, skin colour is usually lighter and often pink.

Why is skin colour different in different climates? Skin pigmentation, which is what gives skin its colour, can protect against sunburn and skin cancer. When animals live in colder parts of the world, they don't need it as much to survive. Light-coloured skin also helps animals stay warmer because it reduces heat loss, which is useful if you're in a colder climate.

For most animals, the colour of their fur or other body covering has generally developed as camouflage. That allows animals to mix into the background and avoid being eaten, or for predators (捕食者) to remain hidden during hunting. One example is the sandy-coloured coat of the desert fennec fox, which uses camouflage for both hunting and hiding.

By the way, in many animals, ears come in many different shapes and sizes. For example, in bats, the serval (a type of African wildcat) and the fennec fox, the ears are large compared to their body size—this helps them hear better because it allows them to sense more sound waves. Naked mole-rats have tiny ears because they need to dig a lot. Big ears would get in the way. The other downside of big ears is that you can lose a lot of body heat. That's why animals that live in really cold places, like the Arctic fox, have quite small ears.

Delicate strokes(笔画), carved onto wood, with ultimate precision. This is woodblock printing, {#blank#}1{#/blank#} ancient printing technique that has promoted human civilization.

Certain people are believed{#blank#}2{#/blank#} (bring) Buddhism into China during the Tang Dynasty (618-907),when there was a strong need to produce a large number of Buddhist scriptures(经文)，and copying by hand could not meet the {#blank#}3{#/blank#} (rise) demand. Ancient Chinese craftsmen thus came up with a novel way to create printed works massively. Hence came the{#blank#}4{#/blank#} (origin) version of woodblock printing.

Traditional woodblock printing can be divided into four major steps: writing, engraving, printing, and binding. With each step then sub-divided into several procedures, {#blank#}5{#/blank#} takes roughly 30 steps to produce a woodblock print. Characters and images{#blank#}6{#/blank#} (carve) to produce raised areas or lines, which calls for skilled hands.

The Buddhist scripture Diamond Sutra, the "earliest dated printed book", can only be seen in the British Library,{#blank#}7{#/blank#} a lot of Chinese treasures are stored. It is just one example of ancient works of art that not only tells the{#blank#}8{#/blank#} (wise) of our ancestors, but also is a witness{#blank#}9{#/blank#} the pursuit of beauty by Chinese craftsmen throughout centuries.

The invention of writing gave life to great thoughts,{#blank#}10{#/blank#} it was the invention of printing that made knowledge a shareable fruit for all humankind.