While the U.S. is still debating about getting rid of the penny, Sweden is rapidly moving towards abolishing (to end) currency altogether. Though this may sound radical (过激的), it is a natural evolution in this digital society.

    Sweden, which was the first European country to introduce banknotes in 1661, has just been working harder to convince its residents that digital payments are a safer alternative to carrying cash.

    Over the years, the idea has gained popularity with residents, especially the younger generation that is much more comfortable with technology. Today many banks don't even have ATMs and some have stopped handling cash altogether!

    Tickets to ride public buses in most Swedish cities can only be bought via cell phones. Numerous businesses are also moving towards accepting only digital payments. Even the homeless that sell street paper to make ends meet have to start accepting this mode of payment!

    But despite its growing popularity, some people don't like this radical idea. They include the homeless, elderly people as well as those living in rural areas who are still uncomfortable with mobile phones and computers. But the officials are confident that in the very near future, they will be able to convince everyone to move this safe and more cost-effective payment system.

    Sweden is not the only country trying to abolish paper currency and coins. The movement is rapidly gaining ground in Denmark and Finland as well. In 2014，Israel announced a three-step plan to go cashless and just last week the vendors (小贩) of a popular street in Sydney declared they would stop accepting currency from customers. Whether this phenomenon spreads remains to be seen. But one thing is for sure-With increasingly advanced payment systems being introduced every day, pulling out cash is rapidly becoming “uncool”.

    I came to study in the United States a year ago .Yet I did not know the real American society until I was injured in a car accident because after the accident I had to see a doctor and go to court.

    After the accident .my roommate called a doctor for me. I was very grateful and determined to repay him one day. But the next day, he asked me to pay him $200 for what he had done. I was astonished. He had good reason to charge me, he said. And if I wanted to collect money from the person who was responsible for my injury, I'd have to have a good lawyer. And only a good doctor can help me get a good lawyer. Now that he had helped me find a good doctor, it was only fair that I should pay him.

    But every day I went to see the doctor, I had to wait about 50 minutes. He would see two or three patients at the same time, and often stop treating one so as to see another. Yet he charged me $115 each time .The final examination report consisted of ten lines, and it cost me $215.

    My lawyer was all smiles the first time we met. But after that he avoided seeing me at all. He knew very well the other party was responsible for the accident, yet he hardly did anything. He simply waited to collect his money. He was so irresponsible that I decided to dismiss him. And he made me pay him $770.

    Now I had to act as my own lawyer. Due to my inexperience, I told the insurance company the date I was leaving America. Knowing that, they played for time…and I left without getting a cent.

    Wang Mengshu, an expert at the Chinese Academy of Engineering, said at a group discussion on the sidelines of the annual session of the National People's Congress that Wi-Fi should not be provided on high-speed trains, as it might disturb communication signals of trains and would also cost a lot in keeping trains in good condition. He also encouraged passengers to enjoy the views, instead of fixing their eyes on tiny screens of smart phones and laptops. However, on last Tuesday Beijing Youth Daily said it should be market demand that decides whether the Wi-Fi is offered on the trains or not.

    An increasing number of residents, especially young white-collar workers, are addicted to their smart phones rather than face-to-face interactions, thanks to the extensive Wi-Fi coverage across the country. That partly justifies Wang's opposition to the offering of Wi-Fi on high-speed trains, because they are not supposed to be dependent on high-tech devices. It is also evident that passengers on trains without free Wi-Fi will use their smart phones and other mobile devices less. However, whether the trains should provide a free Wi-Fi service fundamentally depends on customer demand.

    In other words, state-owned as it is, the China Railway Crop still has to obey relevant market rules, and provide technologically possible services to passengers if that is what they want. It cannot turn a blind eye to customers' wants "for the sake of their well-being".

    Free Wi-Fi, in fact, is already available on a lot of buses and coaches. This is a natural response to their competition with trains (especially high-speed ones), which are significantly faster and safer. The bus companies have been forced to improve their services to survive. It requires proper guidance, not a total ban on the bus, to make up for the negative effects of high-end technologies, such as people's increasing addiction to smart phones.

    When we see a person in trouble, the first idea that comes to our mind is to lend a hand. But what if we see an animal in trouble, does the same rule apply?

    This question was raised after a group of penguins were saved from an icy gully（峡谷）in Antarctica. It was filmed for the BBC wildlife series Dynasties. The film crew were anxious when they saw that a group of penguins had fallen into a gully and been trapped with their young. They built a slope（斜坡）so that a few of the penguins could save themselves.

    The case has taken the international media by storm. Viewers watching this film let out a sigh of relief. "I'm so glad. I understand not taking action directly, but a helping hand isn't bothering, right?" viewer Kathryn Shaw said on her Facebook.

    However, others think human interference（干涉） is unnatural. "You can't have sunshine throughout your life. To have done anything else would only make matters worse," said the show's creator David Attenborough, according to The Times.

    In this case, however, Mike Gunton, the executive producer of the series, said that this was a one­off situation. "There were no animals going to suffer by interfering. You weren't touching the animals and it was just felt by doing this... they had the chance not to have to keep slipping down the slope," he told the BBC.

    Such cases are familiar to Paul Nicklen, wildlife photographer for National Geographic. He told Metro, "If it's ever a predator（捕食者）situation, no matter how gut­wrenching, you stay out of the way. Even when you're watching a male polar bear eat a baby bear."

    "There's no rule book in those situations. You can only respond to the facts that are right there in front of you," Will Lawson, the show's director, told Daily Mail.

    The doctor made it sound easy. Just walk. It was easy for him to say. I couldn't walk to the end of the road to pick up my mail. I tried to stand up, but soon got breathless and just stopped. My mailbox seemed to be so far away. It was hard for me, though I am only 39 years old!

    A month ago, my wife Stephanie and I were in Colorado Springs with our friends when I woke up at 12 o'clock at night and didn't feel very well. Stephanie and I drove to the hospital, and my 10­day vacation turned into a 10­day hospital stay. I got a scar (伤疤) on my body. It was really tough to walk around then and I needed practice.

    Stephanie had to go to work so she encouraged me to try to take a few walks. Minutes later, she came back with a puppy. "Where did you get that?" I asked. "In our mailbox," she replied. What a wonder! The puppy was dirty, with big pleading (恳求的) eyes. Stephanie was late for work. I was not very happy. I couldn't take care of myself. How could I look after this puppy? "He's going to the pound (动物收容所)," I thought. However, wherever I went, the puppy would closely follow me. I tried walking. The puppy ran ahead, looked back and repeated it again and again. He seemed to say "come on". I took a deep breath, and then tried stepping; the puppy was right at my side. I succeeded at last. I didn't take the puppy to the pound. Instead, we walked toward the mailbox.

    We named him Cheyenne. Before long, I was walking with Cheyenne every day. Pretty soon, I was strong enough to work on the farm again. Now I wonder who put a puppy in a mailbox. Nobody is so crazy after all, Cheyenne was maybe what the doctor ordered.

    Some people say summer is the time when teachers should get more pay. But not everyone is grateful to teachers for keeping kids occupied (无空闲的) between August and June: Washington state representative Liz Pike has written a Facebook post, titled "A life in the day of a WA state representative," and responded to teachers' complaints of rising costs of living. The post has received criticism for being anti-teacher. After reading her post, I feel that Liz Pike should rethink her criticism of public school teaching and avoid comparing it to the private school.

    Many of us teachers would certainly like teaching to be more like the private school. We see nothing wrong with fair pay for fair performance. In fact, performance is the name of the game. With standardized testing popular throughout K-12 education, teachers are some of the most analyzed and performance-measured employees in the United States. Liz Pike is very angry that teachers want raises even while test scores are dropping. Well, how are we supposed to have discipline (纪律) in the classroom when our hands are tied and we can hardly do anything with naughty students or fail students who are not prepared to move on to the next grade?

    Teachers would love to be able to turn education around and improve student performance. But we can't, and we should not suffer for it. Unlike private school businesses, public schools cannot turn away "customers". A private school business serves customers who walk through the door of their own free will, while public schools have to educate students who only attend because courts say they must.

    She says those who are "uninspired" by a lack of a cost of living increase should give up teaching. Is this the message that she thinks should be sent to the students whose academic performance she claims (声称) to care so much about? That "if you love it you'll shut up and not stand up for yourself"? I think teachers should stand up for themselves and I also think supporting teachers can make teachers teach children how to stand up for themselves.