US president Donald Trump has popularized the phrase “fake news” But not too long ago these words in combination would have meant little to everyday English speakers.

    Anatoly Liberman, a German, writes about the origins of the word “fake”. The word, it turns out, has a very dark past. The best guess for how “fake” became mainstream, argues Liberman, is that it was a kind used by thieves in the London underworld. But“how it got there, nobody in the world knows, and probably nobody will ever know,” he tells Quartz.

    Liberman is a professor at the University of Minnesota and the author of Word Origins and How We Know Them. He writes that early records of “fake” as an English adjective appeared around the middle of the 18th century. The word likely comes from cant, or thief jargon(行话).

    The OED mentions “fake” as a verb starting in 1819, which basically meant'to do”in jargon, but also“to kill , wound, or rob”. An entry from a dictionary that year reads :

    “To fake any person or place, to rob them ;to fake a person may also imply to shoot, wound, or cut; to fake a man out and out, is to kill him.”

    Liberman traces the word next to Chares Dickens, who used “cly-faker”，where “cly” means pocket, in Oliver Twist. This is how he believes knowledge of “fake”as a word that means to steal, spread. Eventually it became a commonplace English word.

    Do you find it difficult to put down your mobile phone?

    If yes, you're not alone. These days, many people suffer from the stress of FOMO (fear of missing out). They reach of their mobile phones when they wake up in the morning, and for the rest of the day, they constantly check their social media apps for the latest updates.

    Despite the convenience smart phones bring, many people struggle with their digital habits. This is why Google introduced an app called Dashboard for Android operating system. This new app includes well-being functions that aim to help users manage the time they spend on their digital devices.

    It all starts with a bird's-eye view. Dashboard allows users to look at all the details of their phone habits. For example, a user can see how many times they're unlocked their phone and how many times they're checked their social media apps, as well as how much time they spend on each app every day.

    Once the users see this information, they'll be able to make some changes. With the App Timer function, users can set a time limit for how long they can use each app for every day.

    But even if users become more mindful of their usage, they're still likely to be drawn in by notification（通知）. Such feature automatically（自动地）silences incoming calls and notifications when a user puts their phone face down.

    If people truly want to make full use of their free time instead of losing hours using their smart phones, these new functions are just one way of doing that.

    The easiest answer would be just to use your willpower.

    The students are having their chemistry class. Miss Li is telling the children what water is like. After that, she asks her students some questions, “Boys and girls! What is water? Can you tell me?" She waits for a few minutes, but no one answers her. Then Miss Li asks again. “Why don't you answer my question? I tell you what water is like, right?”

    Then a boy puts up his hand and says, “Miss Li, you tell us that water has no color and no smell. But I think that water is something that is black when I wash my hand in it.” All the students begin to laugh. Miss Li laughs too. Then another boy puts up his hand, Miss Li says “What do you think, Wang Bing?” The boy says:” Miss Li, where can we find water that has no color and no smell?”

    “Why do you say so?” Miss Li asks.

    “The water in the river behind my house is always black and it has a bad smell.” answers the boy. And most of the children think he is right.

 “I am sorry to hear that, children.” says the teacher. “Our water is getting dirtier. That is a problem. All of us must try our best to make it clean again.”

    When I lived in Spain, some Spanish friends of mine The family you have chosen decided to visit England by car. Before they left, they asked me for advice about how to find accommodation. I suggested that they should stay at 'bed and breakfast' houses, because this kind of accommodation gives a foreign visitor a good chance to speak English with the family. My friends listened to my advice, but they came back with some funny stories.

"We didn't stay at bed and breakfast houses," they said, "because we found that most families were away on holiday."

I thought this was strange. Finally I understood what had happened. My friends spoke little English, and they thought 'VACANCIES' meant 'holidays', because the Spanish word for 'holidays" is 'vacancies'. So they did not go to house where the sign outside said 'VACANCIES', which in English means there are free rooms. Then my friends went to house where the sign said 'NO VACANCLES', because they thought this meant the people who owned the house were not away on holiday. But they found that these houses were all full. As a result, they stayed at hotels!

We laughed about this and about mistakes my friends made in reading other signs. In Spanish, the word 'DIVERSION' means fun. In English, it means that workmen are repairing the road, and that you must take a different road. When my friends saw the word 'DIVERSION' on a road sign, they thought they were going to have fun. Instead, the road ended in a large hole.

English people have problems too when they learn foreign languages. Once in Paris, when someone offered me some more coffee, I said "Thank you" in French. I meant that I would like some more. However, to my surprise the coffee pot was taken away! Later I found out that "Thank you" in French means "No, thank you."

    A court battle between German and Israeli archives （档案馆） over Kafka's manuscripts （手稿）raised literary, not just legal, questions. At the time of his death, Kafka hardly seemed like a candidate for world fame. He had a minor reputation in German literary circles. He published a few stories in magazines, but they received little attention.

    After he died in 1924, his friend Max Brod collected, edited and published his works - despite Kafka's own instructions in his will ordering the manuscripts to be destroyed - thus making Kafka a household name after his death. When the Nazis invaded Prague, Brod escaped to Israel, bringing the manuscripts with him. When he died in 1968, his manuscripts, together with those of Kafka, were transferred to his secretary Esther Hoffe.

    Even though Brod asked in his will that the manuscripts be given to a public archive, Hoffe sold some of them abroad for a great deal of money. Many of them eventually made it to the German Literature Archive. In 2007, she died and left her properties to her daughters. Then the case about the manuscripts started after the death of one of her daughters. The court said Hoffe had no rights, and could not have any such rights for the documents Brod took from Kafka's apartment after his death.

    Ironically, Kafka's stubborn homelessness and non-belonging in his works were accurately what ensured his place at the center of 20^th-century literature. W. H. Auden proposed that Kafka was to the cold, absurd 20^th century what Dante or Shakespeare had been to their times - the writer who captured the spirit of the age. That is why, in the end, it hardly matters whether Kafka's manuscripts stay in Germany or Israel. What counts is that we are all living in Kafka's world.

    If you were an exchanged student in New York City, one day your math teacher gave you following questions as your homework, please write down your answers.

    Ⅰ.A company sold a product for α dollars in 1990. The price of the product would increase by 2.5% every year.

    Ⅱ.A man needs to make 3 curtains. The cloth which is used to make curtains sells for $8.00 per meter and can be purchased only by the full（完整的） meter. The length of cloth required for each curtain is 1.6 meters.

    Ⅲ.A pet store sells only dogs and cats. In March, the store sold twice as many dogs as cats. In April, the store sold twice the number of dogs that it sold in March, and three times the number of cats that it sold in March.