Science textbooks around the world have become suddenly out of date. Four new chemical elements(元素)have been added to the periodic table. A big decision now lies ahead-elements 113,115,117 and 118 need to be given their official names and symbols.

    New elements can be named after a mythical(神话的) concept, a mineral, a place or country, a property(性质) or a scientist. The names have to be unique and maintain “historical and chemical consistency”. This means a lot of “-iums”.

    “They're Latinising the name,” explains chemist Andrea Sella. “The most recent tradition is to name them after places or people.” The places chosen tend to be where the element was discovered or first produced.

    No one has yet named an element after themselves but many elements are named in honour of important scientists. Albert Einstein was given einsteinium. This can also be a way of righting the wrongs of the past. “Lise Meitner was really the chemist who spotted nuclear fission(核裂变)but she was never really recognised for it because she was Jewish and a woman, ” says Sella. “Giving an element a name that reminds us of her is greatly important. ”

    The naming process isn't quick. The scientists who discovered them will start things off by suggesting a name. But it will be down to the International Union of Pure and Applied Chemistry (IUPAC) to approve it. A special division of the US-based group has to accept the suggestion. Then there is a public review period of five months before the IUPAC gets the final approval. Once it's ready, the name is announced in the scientific journal Pure and Applied Chemistry.

    Naming an element is not just about functionality. Names are always important.

根据短文内容，选择最佳答案，并将选定答案的字母标号填在题前括号内。

    On a recent visit to the Museum of Modem Art with a friend and her daughter,wandering through the museum's exhibits,I was struck by how often my friend's 13-year-old daughter asked us to take photos of her with her smart phone in front of the artwork.Then,she gazed at the photos which she would then post on Instagram,Snapchat and all the rest.She was not the only person who was doing this; it seemed everyone was busy taking photos of themselves "experiencing" the museum.

    This is by no means a criticism of my friend's daughter or anyone else.What was concerning,at least to me,was that in between being photographed and posting,my friend's daughter had no interest in the artwork,a fact which didn't seem to matter or have anything to do with wanting to post herself as someone enjoying the experience.

    When I was her age,I had no interest in going to museums either.Having no interest in art at her age (and any age) is completely normal.But what is disturbing is how much of a young person's energy these days goes into creating an image of the life they're living and the character they "are" in that life.While creating a self-image has always been a big part of growing up and figuring out our identity,social media seems to have changed the rules of the game.Social media has not just increased the pressure and possibility of creating a self-generated（自我创造的）  self-image,but also distorted（歪曲）the process through which we become who we are.Young people now seem to be creating an image of who they are in place of becoming who they are,posting their life rather than living it.

    Social media has turned life and its experiences into an exercise in narcissism（自恋，自我陶醉）.No matter what the experience is actually about,it becomes about you,the person who is living it.A concert is not about the music,a restaurant not about the food and a sport event not about the sport;it's all about you,the doer,and what the event says about you.As a result the more we use life create an identity,the more distant from life we feel.Instead of being part of it,we feel as if we have to keep generating new life material.

    I hope the next time you post your story,pause for a moment and experience where you are,feel what it feels like to live what you're living without using life for your benefit,or for anything at all.Just live,without the narrative（叙述）.While you may feel this practice is a threat to your identity,causing you to miss a chance to prove your value,in fact,the benefit will far outweigh any loss it brings.

    In 1947 a group of famous people from the art world headed by an Austrian conductor decided to hold an international festival of music, dance and theatre in Edinburgh. The idea was to reunite Europe after the Second World War.

    At the same time, the Fringe appeared as a challenge to the official festival. Eight theatre groups turned up uninvited in 1947, in the belief that everyone should have the right to perform, and they did so in a public house disused for years.

    Soon, groups of students firstly from Edinburgh University, and later from the universities of Oxford and Cambridge, Durham and Birmingham were making the journey to the Scottish capital each summer to perform theatre by little-known writers of plays in small church halls to the people of Edinburgh.

    Today the Fringe, once less recognized, has far out grown the festival with around 1,500 performances of theatre, music and dance on every one of the 21 days it lasts. And yet as early as 1959, with only 19theatre groups performing, some said it was getting too big.

    A paid administrator was first employed only in 1971, and today there are eight administrators working all year round and the number rises to 150 during August itself. In2004 there were 200 places housing 1,695 shows by over 600 different groups from 50 different countries. More than 1.25 million tickets were sold.

    A long time ago, soldiers fought wars on foot. Then they began to ride horses to battle. Until the invention of the stirrups (马蹬), though, men could not fight well with swords or spears while on horseback.

    Without stirrups, soldiers had no place to put their feet. They could not stand up to use their swords without falling off their horses. They could throw spears only with the force of their arms.

    Using stirrups, a soldier could stand up in his saddle (鞍). He could put a spear under the top part of his arm and charge with the force of his horse. He could use force when fighting with a sword. And he could win most fights against soldiers who did not use stirrups.

    The first stirrups were made in India. Because the weather was warm, people did not wear shoes. The Indian stirrup was made of rope. It fit around the big toes. Later, the Chinese made a foot stirrup of wood. Because the Chinese lived in a colder country, the stirrup had to fit around shoes. Still later, around A. D. 700, soldiers in Asia used strong iron foot stirrups.

    Driving a car is not just handling controls and judging speed and distance. It requires you to predict what other road users will do and get ready to react to something unexpected. When alcohol is consumed, it enters your bloodstream and acts as a depressant (抑制药),damaging eyesight, judgment and co­ordination(协调),slowing down reaction time and greatly increasing the risk of accidents. Even below the drink driving limit, driving will be affected.

    Alcohol may take a few minutes to be absorbed into the bloodstream and start action on the brain. Absorption rate is increased when drinking on an empty stomach or when consuming drinks mixed with fruit juice. To get rid of alcohol from the body is a very slow process and it is not possible to speed it up with any measures like taking a shower or having a cup of tea or coffee.

    The present Road Traffic Ordinance states clearly that the limit of alcohol concentration is： 50 milligrams of alcohol per 100 ml of blood； or 22 micrograms of alcohol per 100 ml of breath; or 67 milligrams of alcohol per 100 ml of urine (尿液)．

    Drivers who cause traffic accidents, or who commit a moving traffic offence or are being suspected of drink driving will be tested.

    Any driver found drinking beyond the limit will be charged. The driver declared guilty may be fined a maximum of HK $ 25000 and be sentenced to up to 3 years in prison and punished for 10 driving­offence points; or temporarily banned from driving.

    The same punishment applies to failing to provide specimens (样本)for breath, blood or urine tests without good excuse.

    Drink driving is a criminal offence. Be a responsible driver, think before you drink. For the safety of yourself and other road users, never drive after consuming alcohol.

    No one knew Prince Edward Street as well as Pierre Dupin. He had delivered milk to the families on the street for thirty years. For the past fifteen years a large white horse named Joseph pulled his milk wagon. Joseph was a gentle horse with beautiful spirit shining out of its eyes, so Pierre named him after Saint Joseph.

    Every morning at five, Pierre arrived at the milk company's stables to find Joseph waiting for him, Pierre would call, “Good morning, my old friend.”, as he climbed into his seat, while Joseph turned his head toward the driver. And the two would go proudly down the street. Without any order from Pierre, the wagon would roll down three streets. Then it turned right for two streets, before turning left to Saint Catherine Street. The horse finally stopped at the first house on Prince Edward Street. There, Joseph would wait perhaps thirty seconds for Pierre to get down off his seat and put a bottle of milk at the front door.

    Pierre knew every one of the forty families that got milk. The cooks knew that Pierre could not read or write; so, instead of leaving orders in an empty milk bottle, they simply sang out if they needed an extra bottle.

    Pierre also had a wonderful memory. When he arrived at the stable he always remembered to tell Jacques, the foreman(领班) of the stables, “The Pacquins took an extra bottle this morning; the Lemoines bought a pint of cream …” Most of the drivers had to make out the weekly bills and collect the money. But Jacques, liking Pierre, never asked him to do this.

    One day the president of the milk company came to inspect the early morning milk deliveries. Jacques pointed to Pierre and said: ”See how the horse listens and how he turns his head toward Pierre? See the look in that horse's eyes? You know, I think those two share a secret. I have often felt it. He is getting old. Maybe he ought to be given a rest, and a small pension.”

    “But of course,” the president laughed. “He has been on this job now for thirty years. All who know him love him. Tell him it is time he rested. He will get his pay every week as before.”

    But Pierre refused to leave his job. He said his life would be nothing if he could not drive Joseph every day. “We are two old men,” he said to Jacques. “Let us wear out together. When Joseph is ready to leave, then I too will do so.”

    Then one cold morning Jacques had terrible news for Pierre. Jacques said, ”Pierre, your horse, Joseph, didn't wake up. He was very old, Pierre.” Jacques said softly. “He is over in his stall, looking very peaceful. Go over and see him.” Pierre took one step forward, then turned. “No ... no ... I cannot see Joseph again. You ..., you don't understand, Jacques.”

    For years Pierre had worn a large heavy cap that came down low over his eyes. It kept out the bitter cold wind. Now, Jacques looked into Pierre's eyes and he saw something that shocked him. He saw a dead, lifeless look in them.

    “Take the day off, Pierre,” Jacques said. Pierre walked to the corner and stepped into the street. There was a warning shout from the driver of a big truck ... there was the screech(尖锐的刹车声) of rubber tires as the truck tried to stop. But Pierre heard nothing.

    Five minutes later a doctor said, “He's dead ..., killed instantly.”

    “I couldn't help it,” the truck driver said. “He walked in front of my truck. He never saw it, I guess. Why, he walked as though he were blind.”

    The doctor bent down. “Blind？Of course, this man has been blind for five years.”  He turned to Jacques, “Didn't you know he was blind？”

    “No ...no ...” Jacques said softly. “None of us knew. Only one ... only one knew－a friend of his, named Joseph ... It was a secret, I think, just between those two.”