When you're on the go, your best friend and resource can be your phone. In the age of smart phones, apps are like guiding stars: They can point you in the right direction for a hotel, list expenses, send postcards, and much more. When used together, these apps can be the basic travel tool, placing a wealth of information at your fingertips no matter where you are on the planet. U.S. NewsTravel has picked the essential travel apps, known for their utility and reliability. Best of all, they cost absolutely nothing.

Trip It

    Your Personal Travel Agent

    Be your own travel agent and plan every detail of your trip—from car rental to accommodating restaurants—with Trip It. You can make travel schedule by hand, or simply forward the email confirmations of your flight, rental car, train tickets, and hotels to plans.

Weather Free

    Your Go-To Meteorologist(气象学者)

    Stop trying to explain the weather forecast on the evening news (particularly when it's in a foreign language). The Weather Free app informs you (in English) of the climate in various locations. It features the local weather, and other key factors that will inform your decision about what to wear before stepping outside.

Goby

    Your Event Guru

    When you're in a foreign city, you sometimes look around and ask: Where are all the people? Goby has the answer. This app pinpoints the neighborhood hot spots (including museums, hotels, eateries, and more) in your neighborhood. But its true value comes in finding nearby events. You'll discover concerts, plays, and more right around the corner.

    A farmer had a cow, and he took very good care of the cow. One day when the cow was ill, he was very worried. He telephoned the vet.

    "What's the problem?" the vet asked the farmer when he arrived.

    "My cow's ill," the farmer said. "I don't know what's the matter with her. She's just lying down and doesn't eat anything. She's making a strange noise."

    The vet examined the cow and said, "She's certainly ill, and she needs to take some very strong medicine."

    He took a bottle out of his box, put two pills into the farmer's hand and said, "The pills should make her feel better."

    "How can she take these pills?" the farmer asked.

    The vet gave him a tube(管子) and said, "Put this tube in her mouth, and then put the pills in the tube and blow(吹气) into the cow's mouth. That will make it."

    The next day the vet came to the farm again. The farmer was sitting outside his house and looked more worried.

    "How is your cow?" the vet asked.

    "Not better," the farmer said, "and I'm feeling very strange myself."

    "Oh?" the vet asked. "Why?"

    "I did what you said," the farmer answered. "I put the tube in the cow's mouth and then put the two pills in the tube."

    "And?" the vet asked.

    "The cow blew first," the farmer said.

    Partway through Wonder, Fifth-grader Auggie Pullman finds himself seated across from a new friend in the school cafeteria. "Have you ever thought about having plastic surgery?" the friend asks.

    "Dude, this is after plastic surgery. It takes a lot of work to look this good," Auggie says, running a hand through his hair. In other words, what could be painfully depressing turns out to hold lurking (潜藏的) reserves of humour, which is pretty much the story of Wonder.

    Auggie, played by Jacob Tremblay, was born with a facial difference, and even after multiple operations, his looks shock his classmates. As he adapts from homeschooling to a new school community, he encounters far worse than that lunchtime scene—one nasty bully (横行霸道者) says he'd kill himself if he looked like Auggie—but he never fully loses heart.

    The movie is an adaptation of the 2012 novel by R.J.Palacio, which has sold 6 million copies in North America and launched an antibullying campaign, Choose Kind. Palacio has said she got the idea for the story when her young son began crying at the sight of a girl with a facial difference in an ice cream shop. She took her kids out of the shop, but later regretted her reaction. "What I should have done is simply turned to the little girl and started up a conversation and shown my kids that there was nothing to be afraid of," she said.

    Tremblay, 11, who broke out opposite Brie Larson in the 2015 drama Room, has more than a few things in common with Auggie. "We both love Star Wars, we have awesome families, and we love our dogs." But Tremblay thinks we all can find something in common with the boy. "Everyone's like Auggie in one very important way: we want to be accepted and treated equally and with kindness."

    Julia Roberts, who plays Auggie's mother, became interested in the part because of her own children, "I read it with my kids and fell so in love with it," she says of the novel. "This book is such a beautiful and gentle introduction into all kinds of topics, including bullying and intolerance and fear, and what fear makes young people do sometimes."

    Both actors have some familiarity with the subject. "I was picked on quite a bit as a young person," Roberts says, though she won't say what for. "Even as a 50-year-old mother of three, it's not a path I like to go up and down." Tremblay reveals a bit more. "I have been picked on," he says, "because I'm kind of short for me age. I told my parents, and that's one of the best things you can do, because my mom said would never want me to carry negative thoughts on my shoulders alone."

    The most challenging parts of filming, says Tremblay, were moments in which he had to cry. Tenderhearted audience members will likely shed tears of their own—especially during scenes between Auggie and his mom, who repeatedly reassures her son that he is worthy of love. But the movie also has its fair share of hijinks (喧闹): for every tear-filled moment, there is a lightsaber battle or silly science project to lighten the mood. This mixture of pity and humor, says Roberts, "was intrinsic (固有的) in the writing in the novel." But she credits writer-director Stephen Chbosky with translating that balance into visual terms.

    As much as the movie impresses the viewer with compassion for the underdogs, it also finds a way to sympathize with the bullies. "I would say to try to take a moment to be conscious of why a person that is bullying somebody is behaving that way," says Roberts, "After all", she adds, "There's no child that's born bully."

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    The Chinese invented paper in 105 A. D. They mixed the bark of a tree and rags (破布) with water, put a screen into the mixture, and lifted out a thin piece of wet paper. They dried the paper in the sun.

    The Chinese kept their secret of how to make paper until a war with Muslims in the ninth century. The art of papermaking soon spread throughout the Muslim world.

    The Mayan Indians in Central America and Pacific Islanders also discovered how to make paper, but their knowledge never spread to the rest of the world.

    For centuries, all paper was made by hand. Rags were the main material. Then a French scientist discovered that people could make paper from wood, too. Finally, in the eighteenth century, a Frenchman invented a machine to make paper from wood.

Feeling achy and feverish? Your misery has plenty of company. By the end of December, the tally(记录) of flu-like illnesses in the state exceeded the peaks in the two previous seasons, when the biggest number of cases occurred in February and March. This time, the flu virus seems to be hitting even harder.

Flu is unique among human diseases. It circulates constantly in cool and dry areas. Because it spreads from person to person and can be picked up easily, nearly everyone is exposed. While it's unclear whether the annual flu epidemic(流行病) will worsen this year, or just arrived earlier, fears have been increased by the severity of flu in Australia during its most recent season and the fact that the vaccine may protect against the predominant(盛行的) kind of the flu only 30 percent of the time.

Despite the worries, doctors and public health officials say there is no evidence that people are getting sicker than usual. Flu cases in Massachusetts started rising around Thanksgiving and increased steadily, with an especially steep climb in the last week of the year. "This is a bad flu season but not a horrible one," said Dr Andrew G. Villanueva, a lung specialist and chief quality officer at the Lahey Hospital & Medical Centre in Burlington.

"The flu season, while clearly in full swing, doesn't ‘feel different' from previous years," Villanueva said. "We're not seeing a lot of people being hospitalised because of flu," he said. "Most people with the flu recover on their own without medical care."