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    The world's first robot police officer has started working. Its name is 'RoboCop' and it went into service for the Dubai Police earlier this week. Robocop's first official duty was to greet guests at the opening of a security conference in Dubai. Apart from greeting visitors' its job was to answer questions and give directions. RoboCop has a built — in tablet for people to interact with. People can use the tablet to pay traffic fines and use other smart police services. The tablet is linked to a police station, so people can talk to human police officers. In addition, RoboCop can speak six languages, including English and Arabic. The 170 - centimetre - tall robot can also shake hands, salute people and recognize people's emotions and facial expressions.

    Dubai Police says RoboCop is the first of many robot police officers for the city. A spokesman said that by 2030, 25 per cent of the Dubai Police force will be robots. He said: “We are looking to make everything smart in Dubai Police. By 2030, we will have the first smart police station which won't require human employees.”

    “The RoboCop is the latest smart addition to the police force and has been designed to help us fight crime, keep the city safe and improve happiness levels,” He added. He also said that RoboCop would, “assist and help people in the malls or on the streets”. An official at the security conference commented that the future is here now, saying: “The age of the robots is no longer coming. It has arrived.”

    Art museums are places where people can learn about various cultures. The increasingly popular “design museums” that are opening today, however, perform quite a different role. Unlike most art museums, the design museums show objects that are easily found by the general public. These museums sometimes even place things like fridges and washing machines in the centre of the hall.

    People have argued that design museums are often made use of as advertisements for new industrial technology. But their role is not simply a matter of sales—it's the honouring of excellently invented products. The difference between the window of a department store and the showcase in a design museum is that the first tries to sell you something, while the second tells you the success of a sale.

    One advantage of design museums is that they are places where people feel familiar with the exhibits. Unlike the average art museum visitors, design museum visitors seldom feel frightened or puzzled. This is partly because design museums clearly show how and why mass－produced products work and look as they do, and how design has improved the quality of our lives. Art museum exhibits, on the other hand, would most probably fill visitors with a feeling that there is something beyond their understanding.

    In recent years, several new design museums have opened their doors. Each of these museums has tried to satisfy the public's growing interest in the field with new ideas. London's Design Museum, for example, shows a collection of mass－produced objects from Zippo lighters to electric typewriters to a group of Italian fish－tins. The choices open to design museums seem far less strict than those to art museums, and visitors may also sense the humorous part of our society while walking around the exhibits.

    The best-known example of external( 外部的)influence causing language change is the "Americanization" of world culture, which has caused English words to appear in city streets all over the world. The effect is most noticeable in pop music. Foreign groups often record in English, and the words are picked up and repeated in the same language everywhere, even by children who otherwise have little or no command of the language. I once met a Brazilian child of about ten who could count 'one, two, three', but only by adding the words 'o'clock, four o'clock rock 'at the end.

Some people are often strongly critical of the influence of English on their language — especially when an English word replaces a traditional word. In 1977, France passed a law banning the use of English words in official situations if an equivalent( 意义相同的)French expression existed — but the law seemed to be honored more in the breaking than in the observing. Some other countries have considered introducing a similar law despite the evidence that such laws have very little effect, and that the arrival of loan words( 外来词) can greatly enrich a language (as indeed in the case of English itself, which has a long history of welcoming foreign words).

    However, not everyone is critical. In particular, commercial firms and advertisers are well aware of the potential selling power that the use of English vocabulary can bring. In Japan, English is even used in television commercials, despite the fact that the majority of viewers would not understand exactly what was being said: the excellence implied by the mere use of English is apparently enough to command the strategy to the advertisers.

    Most of the influence of English is upon the vocabulary of foreign languages, but surveys are slowly bringing to light several cases where word order or word structure has been affected. Sentences of the type “The book sells well”, using an active construction for a passive meaning, have begun to appear in Danish (Bogen soelger godt). Several languages keep the English plural ending when they make use of a loan word, and do not translate it into the native form, e.g. drinks. There are many other such cases.

    With more and more people swimming at beaches every year, the problem of sharks (鲨鱼) takes on new importance. There are people who still insist that sharks never attack human beings unless they are bleeding or wounded, but this belief has not been clearly proved. In the past few years, on both the Atlantic and Pacific coasts, there have been cases of shark attacks which resulted in death. And just how many of the swimmers who have disappeared were victims of shark attacks will never be known. Clearly, these violent fish can be dangerous. Several species are known to attack human beings, and it is believed by some experts that certain sharks, once having tasted human blood, develop a taste for it.

    The chances that one will come across a shark are small, but certain precautions should be taken by everyone. (A precaution is something you do in order to prevent something dangerous or unpleasant from happening.) Putting hands or legs over the side of a boat in warm waters is to be avoided. Swimming far out from beaches is inviting trouble. No swimmer should go great distances from shore alone, or go into the water when nobody else is about. Skin divers, particularly those who go deep down in the water or among rocks and ledges (暗礁) that serve as hiding places for sharks, are taking unnecessary risks.

    If one is in a boat that is rubbed against by a shark, he should remember the creature is not trying to upset his boat; it is probably trying to rub off sea lice (海虱). A blow, especially on the nose, will drive it off. If a swimmer comes across a shark, he should swim away as quietly as possible, trying to avoid making it angry. He should also head for shore (岸) as quickly as possible.

Natural silence—the kind when you hear nothing but the sound of nature around you—is becoming increasingly scarce.The rumblings of man-made noise can be heard even in the remote corners of national parks and deep in the Arctic Ocean.

 This is having a troubling effect.In humans,noise pollution has been linked to cardiovascular diseases,mental health problems and cognitive impairment in children.In wildlife,it's disrupting navigation,mating rituals,communication and can cause hearing loss."We're losing the ability to listen to nature without noise pollution," says sound recordist Matt Mikkelsen.He's part of the non-profit organization Quiet Parks International,which aims to identify and preserve the planet's last quiet places.

 Recently,this took him to Boundary Waters Canoe Area Wilderness in northeastern Minnesota.No cars,motor boats,electricity or telephone lines are allowed in the 1-million-acre area,making it a strong candidate for Quiet Park status.But listening back to the recording,Mikkelsen can hear the low hum of a commercial jet flying far away.

 Quiet Parks hasn't yet decided if Boundary Waters meets its criteria—it's one of 260 potential sites around the world that the organization is currently exploring.The team will analyze the sound recordings from each location and consider them alongside other data.

 In recent years,the world has been getting louder,with cities and towns expanding and an increasing number of beeping cars,whooshing airplanes and cargo ships with blasting horns.But during the pandemic,there has been momentary respite.In 2020,global air travel was down by 60% and road transport decreased by almost half.Scientists in Europe found that noise caused by humans fell by up to 50% after lockdowns were imposed.

"People relished the silence," says Mikkelsen."There were no airplanes in the sky and cars weren't on the street...It was a miraculous thing to be able to hear the world,all of a sudden,free from noise pollution,"he says.Since the start of the pandemic,Quiet Parks says it has experienced a huge surge in interest for quiet places."I hope that we can take that desire for a world with less noise forward," says Mikkelsen,"and appreciate the spots we have,where we can go and not experience noise pollution."