Each passenger needs a farecard to enter and go out .Up to two children under age five may travel free with a paying customer .

    Farecard machines are in every station .Bring small bills because there are no change machines in the stations and farecard machines only provide up to $5 in change.

    Get one ticket of unlimited Metrorall rides with a One Day Pass .Buy it from a farecard machine in Metro stations .Use it after 9:30 a,m. until closing on weekdays , and all day on weekends and holidays .

    Hours of service

    Open 5am  Mon-Fri             7a.m  Sat-Sun

    Open midnight Sun-Thur.

    Last train times vary .

Train times Posted in stations

    Metrobus

    When paying with exact charge , the fare is $1.35.When paying with a SmarTripⓇcard , the fare is

    1.25.

    Fares

    Senior citizens 65 and older and disabled customers may ride for half the regular fare .On Metrorail and Metrobus , use a senior/disabled farecard or Smar/Trip Ⓡ card .For more information about buying senior .disabled farecard , SmarTripⓇcards and passes , please visit MetroOpensDoors .com or call 202-637-7000and 202-637-8000.

    Senior citizens and disabled customers can get free guide on how to use proper Metrobus and Metrorall services by calling 202-962-1100.

    Travel tips (提示)

    Avoid riding during weekday rush periods –before 9:30 a.m. and between 4and 6p.m.

    If you lose something on a bus or train or in a station, please call Lost &Found at 202-962-1195,

    Regulating a complex new technology is hard, particularly if it is evolving rapidly. With autonomous vehicles(AVs) just around the corner, what can policymakers do to ensure that they arrive safely and smoothly and deliver on their promise?

    The immediate goal is to make sure that AVs are safe without preventing innovation. In America, experimental AVs are allowed on the road in many states as long as the companies operating them accept responsibility. Chris Urmson of Aurora says American regulators have got things right, working closely with AV firms and issuing guidelines rather than strict rules that might prevent the progress of the industry. “It's important that we don't jump to regulation before we actually have something to regulate.” he says.

    On the other hand, Singapore's government has taken the most hands-on approach to preparing for AVs, says Karl Iagnemma of Nutonomy, an AV startup that has tested vehicles in the city-state. For example, it has introduced a “driving test” that AVs must pass before they can go on the road. This does not guarantee safety but sets a minimum standard.

    Elsewhere, regulators have permitted limited testing on public roads but want to see more evidence that the vehicles are safe before going further, says Takao Asami of the Renault issan-Mitsubishi alliance(联盟). “Simple accumulation of mileage(里程) will never prove that the vehicle is safe.” he says. Instead, regulators are talking to car makers and technology firms to develop new safety standards. Marten Levenstam, head of product strategy at Volvo, compares the process to that of developing a new drug. First, you show in the laboratory that it might work; then you run clinical trials in which you carefully test its safety and efficiency; and if they are successful, you ask for regulatory approval to make the drug generally available. Similarly, autonomous cars are currently at the clinical-trial stage, without final approval as yet. It is not possible to prove that a new drug is entirely safe, but the risk is worth taking because of the benefits the drug provides. It will be the same for AVs, he suggests. After all, nowadays human-driven vehicles are hardly risk-free.

    I'm learning to drive in Switzerland. I think it will be a good idea to learn now because I have plenty of free time and am earning a little money to pay for lessons. I never learnt when I lived in the UK, so luckily driving on the "wrong" side isn't a problem.

    However, there are a lot of rules to remember. When you see a road to your right and there are no white lines on the ground, the cars to your right have the right to go before your car and you have to stop for them. In practice, lots of people forget this and cars either wait for each other while both drivers try to remember what to do, or beep (鸣喇叭) at each other if both try to go at the same time!

    When you drive round a roundabout, you should check all your mirrors. To remember how to do this, I often count them aloud—one, two, three—then a second glance at your blind spot when you're in the roundabout. One friend came driving with me and after about an hour asked why on earth I was counting. He had passed his test so long ago, he couldn't remember ever having to check three mirrors!

    Driving still seems scary to me so I drive quite slowly. I also don't know the countryside roads very well and don't know what's coming up round the comer or over the next hill. I drive slowly so I feel safe, but my driving instructor tells me to speed up or cars will bump into me from behind or try to overtake somewhere dangerous. So driving slowly is just as dangerous as driving fast!

    I'm not a very practical person so learning to drive has been a challenge. I don't have a lot of confidence and find it quite demotivating to do something that doesn't come naturally to me. To make driving more fun and interesting, I learn in Swiss German, so my instructor gives me instructions in Swiss. This way I've tricked myself into enjoying driving and hopefully will pass the test!

    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."

    When she was ten years old, Isadora Duncan dropped out of school to teach people dance. If that job was left to any other ten-year-old, it would have turned out frustrating, difficult, and a little discouraging.

    But Duncan was different. Not only was she already talented enough to earn money even at that age, but she also had a rare kind of confidence that helped her treat troubles as fuel —something to elevate the fire that is already burning inside of her.

    It's no surprise, then, that when she moved to New York to join a theatre company, she found herself restricted. The existing dancing style, their way of operating—all of this seemed to her the work of a misguided past. Duncan was very direct about what she wanted, confidently telling people she had a different vision of dance that she was going to spread in the world. This, naturally, led to ridicule and laughs early on, but as she built up her work, these instances became less frequent. Today, she is remembered as "The Mother of Dance," with much of the modern art owing its expressive style to her influence. Inspired by the ancient Greeks, she brought the style to life.

    In her autobiography (自传), one of the things Duncan frequently refers to as the basis of her expressive spirit is the fact that she had a childhood where she wasn't constantly watched. The expectations of her mother (who raised her) were open-ended. It was the freedom of this lifestyle that drove her to see what she could do.

    Growing up, before she left school, she was told one of two things: that she was either completely useless or that she was a genius. There was nothing in between. Even when she started working, people either bowed to her or they basically ignored her. But there wasn't one moment Duncan doubted her own genius.

    There is an old quotation "if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid." And it captures an important truth. At school, Isadora Duncan was a failure. In the dance hall, she gave form to brilliance.

Last year, the Bureau of Labor Statistics reported that 55 million people in the U. S. are "gig workers" which is more than 35 percent of the U. S. workforce. That number is projected to jump to 43 percent by 2020.

People are drawn to gig work（零工）because it brings in a little extra income without a major time commitment. And recent technologies like Skype, Slack, and Dropbox have made the gig life a reality, giving you maximum freedom, an ideal work-life balance, and the chance to pursue your passions.

If you're thinking of joining the gig economy, it's never been easier. One of the great things about the gig economy is that you don't have a boss breathing down your neck. As a freelancer, you no longer have to cater to a company culture or work schedule that might cause physical or emotional stress. Instead, you get to choose the type of work you do and who you work with. But this degree of freedom requires a corresponding amount of discipline. With no boss to make sure you're on task, it's all on you.

A lot of gig workers start their careers by hopping on a project because the employer is desperate and in need of help. On the employer's end, it's tough to take on people for higher management positions when the pool of talent is full of gig workers who haven't been given an opportunity to improve their skills. Businesses have to evolve to learn how to account for an influx (涌入) of temporary workers. It is harder for gig workers to become skilled and get promoted.

The workforce is becoming more advanced and educated by the day. You have to keep learning and keep up with industry trends to maintain a competitive edge. This is true even for people in traditional office settings, but it's critical if you're your own boss.