See a cellphone cover that you like on Taobao? Forget about placing an order, paying the bill online and waiting for days for it to be delivered to you. In the near future, you'll be able to get it in minutes just by hitting “print” on your computer.

    You might find it hard to believe that you could actually “print” an object like you would a picture. But it is not that hard to understand how it would work. Just as a traditional printer sprays ink onto paper line by line, modern 3D printers spread material onto a surface layer by layer, from the bottom to the top, gradually building up a shape.

    Instead of ink, the materials the 3D printer uses are mainly plastic, resin(树脂) and certain metals. The thinner each layer is—from a millimetre to less than the width of a hair—the smoother and finer the object will be.

    This may sound like a completely new technology, but the truth is that 3D printing has been around since the late 1980s. Back then, it was barely affordable for most people, so few knew about it.

    Last year, though, saw a big change in the 3D printing industry—printers became much cheaper. For example, 10 years ago a desktop 3D printer might have cost ￡20，000, while now they cost only about ￡1，000, according to the BBC.

    Taken out of the factory and introduced to more diverse and common uses, 3D printing can create just about anything you can think of—flutes , bikinis, jewelry, aircraft parts and even human organs. In fact, scientists from Cornell University in New York have just made an artificial ear using a 3D printer, according to Science Daily. The fake ear looks and acts exactly like a natural one.

    However, as 3D printing becomes more common, it may bring about certain problems—such as piracy. “Once you can download a coffee maker, or print out a new set of kitchen utensils (餐具) on your personal 3D printer, who will visit a retail  store again？” an expert in 3D printing told Forbes News. Even more frightening, what if anyone in the world could use a 3D printer to print out a fully functioning gun?

    In England, we look forward to our birthdays for 364 days a year! We invite special people to celebrate it with us.

    The Presents

    Presents are opened as soon as the children are awake. They can't wait for the birthday cake later in the day!

    The Cards

    Friends and family send birthday cards. Sending birthday cards is a custom that began in England about 100 years ago.

    The Party

    The birthday child will have a party to which friends and family are invited. Visitors to the party bring presents for the birthday child. The children play games such as Musical Chairs and Pass the Parcel.

    The Cake

    The birthday cake is decorated on a theme(主题). A candle for each year is lit and placed on top and the child blows out the candles making a wish. We don't put objects inside the cake as shown on many websites.

    The Bumps

    It used to be traditional for the birthday child to have the bumps. Friends would hold the child by the child by the legs and under the arms and lift the child up and down bumping them gently on the ground. The number of bumps given is the age of the child plus one for extra good luck. As this can be dangerous, clapping is often done instead.

    The Sweets

    Some children do take sweets into school to share with their classmates on their birthdays.

    If you wish to become a better reader, here are four important points to remember about rate, or speed, of reading:

    ⒈Knowing why you are reading—what you are reading to find out—will often help you to know whether to read rapidly or slowly.

    ⒉Some things should be read slowly throughout. Examples are directions for making or doing something, arithmetic problems, science and history books, which are full of important information. You must read such things slowly to remember each important step and understand each important idea.

    ⒊Some things should be read rapidly throughout. Examples are simple stories meant for enjoyment, news, and letters from friends, items, or bits of news from local, or hometown, paper, telling what is happening to friends and neighbors.

    ⒋In some of your readings, you must change your speed from fast to slow to fast, as you go along. You need to read certain pages rapidly and then slow down and do more careful readings when you come to important ideas which must be remembered.

    Jim Denevan is an amazing artist whose work is admired by all, but owned by none — that's because all of Jim's art is created on an unusual canvas(画布)— the soft sand. He sometimes spends days working on a piece, only to see it washed away by the sea or a storm and that is just the way he likes it.

    Denevan discovered his artistic talents about ten years ago, when he was wandering aimlessly on the beach with a stick. He ended up drawing a 12-foot-long fish. Since then, Jim has traveled over 1,800 miles while creating over 600 pieces of sand art.

    Over the years, his drawings have become bigger, but the tools he uses haven't changed — All he needs is a stick, a garden rake (耙子)and most importantly, his lively imagination!

    Just like any good artist, Jim is quite particular about the "quality" of his canvas, sometimes walking for miles, looking for perfect sand. His latest piece of work, which is also the world's largest freelance (自由职业的)drawing, was created in the desert sand of Nevada. It took Jim three trips, eight days and over 100 miles of walking to create this 3-mile work of art. It took the storm just one night to destroy it! However, Jim says he actually enjoys watching the waves or rain, wash his paintings away.

    Jim's art has become very popular over the years and was even the topic of a documentary named "Sandman" in 2015. Jim Denevan is not just about art in the sand — he is also an excellent chef and founder of an organization called "Outstanding in the Field", whose mottois to celebrate food at its source. Accordingly, group dining events are held outdoors on farms, with the diners being treated to a delicious meal. The events, which are held in different farms throughout America, are always sold out the minute the schedule is announced.

    Beneath the water in the China's Qiandao Lake lies a hidden treasure. The ancient city of Shi Cheng (also known as Lion City), located in the province of Zhejiang, has been submerged underwater for 53 years. Shi Cheng was founded about 1,300 years ago in a valley surrounded by the Five Lion Mountains. When the Chinese government decided they needed a new hydroelectric power station (水力发电站)， a dam and man-made lake were constructed and the city was left at the bottom of this new body of water. Now, it sits at depths ranging from 85 feet to about 103 feet.

    Much like the Machu Picchu ruins in Peru, this underwater city remained forgotten until some renewed interests lead to its rediscovery. Qiu Feng, a local official in charge of tourism thought about utilizing Shi Cheng for entertainment on the lake and as a destination for diving clubs. On September 18, 2001, scuba divers made their first attempt underwater. "We were lucky. As soon as we dived into the lake, we found the outside wall of the town and even picked up a brick, "Qiu told Guangzhou Daily in an interview. More research was conducted, and it was discovered that the entire town was intact (1881), including wooden beams and stairs. After the initial findings, international archaeologists and a film crew then recorded the preservation of the lost ruins.

    Looking at surface of the lake, dotted with over 1,000 islands, you'd never know that an entire city was below.

    It's incredible to think that after all this time, the structure still remains intact and we could one day visit it. Until then, Shi Cheng will continue to remain inconspicuously submerged.

Gorman is the youngest poet in U. S. history. She became the youth poet laureate (获奖者) of Los Angeles at age 16 in 2014 and the first national youth poet laureate three years later. She has recently completed her studies at Harvard University.

Her mother, Joan Wicks, teaches middle school in Watts. Shuttling among the neighborhoods gave Gorman a window to the world. Her like for poetry dates at least back to the third grade when her teacher read Ray Bradbury's Dandelion Wine to the class.

Gorman is a lot better at it now, but still working on her confidence as a public speaker. "Until two or maybe three years ago, I couldn't say the letter 'r'. Even to this day sometimes I struggle with it. I'd want to say 'girls can change the world', but I can not say so many letters in that statement, so I'd say things like 'young women can shape the globe'."

For Gorman, writing became a cure. "I used writing as a form of self expression to get my word on the page. So the more I recited out loud, the more I was able to teach myself how to pronounce these letters which for so long had been my greatest impediment." Gorman said she also used a song from Miranda's Pulitzer Prize-winning Broadway musical Hamilton to help with her speaking. "But I don't look at my disability as a weakness," said Gorman. "It's made me the performer that I am and the storyteller that I strive to be."

In September, Gorman will release Change Sings, the first of two children's books. The poet says she desires to publish a book "in which kids could see themselves as change-makers in history, rather than just observers".