A mechanical bicycle lock, like a U-lock, should be attached to a solid and immobile object like a rack (架子) to ensure safety. However, these racks are quite rare and popular, thus often occupied and although a bicycle lock prevents the bike from being carried away, as it fixes single parts like the frame or the wheels, other parts can be dismounted. Therefore an electronic system, consisting of several sensors, can extend the range of protection with only few components and less effort.

    The ‘FID Bikealarm' is a motion sensitive electronic alarm system that is attached to the rails of a bike saddle (座椅). Featuring omnidirectional (全方位) movement sensing to detect tiny movements or speeding-up and a small whistle emitting >120dB alarm sound to scare off potential thieves by arousing attention.

    The internal microcontroller uses a complex computer program to distinguish between a serious theft and harmless shaking movement as it senses and adapts to the environment. The usage is quite simple: identify yourself by holding the RFID tag close to the case to lock or unlock the alarm system signaled by feedback sounds. The RFID-technology is predestined for achieving this simple and secure interaction because it doesn't require any complex system, interaction or other devices—just a small tag.

    The ‘RFID Bikcalarm' is meant to be a useful add-on to mechanical bicycle locks as it massively extends the range of protection with few components. It is low-cost, durable and easy to use. The internal battery can be charged by USB.

    The following is a timetable in Guangzhou Baiyun International Airport.

    To see the world is one thing; to have someone to share it with is another. Indeed, travel becomes more interesting when you have a travel partner. A travel partner can be a close friend, a family member, a pal you've met online, or a business friend.

    You can have someone to talk to.

    Traveling alone is fun, but wouldn't you feel lonely？Having a travel partner can remove the feeling of loneliness. This is especially true if you can get a travel companion who is very familiar with the place you're traveling to. You don't have to ask any information from the locals, and you can increase the time you spend in the country.

    __________________________

    One of the major headaches in traveling is the costs involved. You can't simply ignore the rising price of hotels or plane tickets. You should also think about your daily needs, such as your food. Of course, you can't simply go back without bringing any souvenirs (纪念品) to your friends and family. All these can ruin your budget. However, when you have a travel friend, you can have someone to share the expenses with.

    You can meet a good friend.

    Having a travel mate is a good way of meeting a new friend or even a lifelong partner. You can never count the number of couples who actually found their way into each other's heart while traveling together in another country.

    You can have someone to watch out for you.

    When you're in a foreign land, you'll never be really safe. You don't know the rules as well as the culture of the people. A travel mate will be perfect to remind you of your duties in the country and to watch your back just in case you get lost.So why don't you find a travel companion now?

    Let's find out how...

    According to the Associated Press (AP), a Chinese scientist claims he successfully created the world's first genetically-edited babies.

    Chinese researcher He Jiankui, a research professor at China's Southern University of Science and Technology in Shenzhen, said he had edited DNA of twin girls born a few weeks ago. ①

    He's claims were immediately criticized by some scientists as unsafe and unethical. This kind of gene editing is forbidden in the United States and many other countries. ②Such changes to a person's DNA can pass to future generations and risk harming other genes.

    In interviews, He Jiankui defended his work. He said he had performed the gene editing to help protect the babies from future infection of HIV, the virus responsible for the disease AIDS. He said the process had “worked safely” and the twin girls were “as healthy as any other babies.” He told the AP he felt a strong responsibility “not just to make a first, but also to make an example” for future research. “Society will decide what to do next,” he said.

    When He's claims became public, the university made a statement saying his work had “seriously went against academic ethics and standards.” University officials said they had no knowledge of his research and had looked into the case. ③

    China's National Health Commission was “highly concerned” about the claims and ordered local health officials “to immediately look into” He's activity. “We have to be responsible for the people's health and will act on this according to the law,” the commission said.

    Scientists discovered in recent years a new way to edit genes that make up a person's DNA throughout the body. The tool, called CRISPR-cas9, makes it possible to change DNA to supply a needed gene or take one away that is causing problems. So far the tool has only been used on adults to treat deadly diseases, and the changes only affected that person.

    ④Kiran Musunuru, a scientist from University of Pennsylvania, told the AP that if such an experiment had been carried out on human beings, it could not be “morally or ethically reasonable.” Julian Savulescu, a medical ethics expert at Britain's University of Oxford, agreed. “If true, this experiment may cause disasters,” he told Reuters.

    However, one well-known geneticist, Harvard University's George Church, defended the attempt to edit genes to prevent infections of HIV. He told the AP that since HIV is “a major and growing public health threat” he finds such experiments “valuable.”

    Three important changes that will affect people's everyday life in the future.

    The cashless society

    Cash and bank notes will disappear almost completely. They will be replaced by smart cards with microchip (微芯片) "loaded" with some money. When we pay for goods, we will put our smart cards into a payment terminal (终端) and money will be transferred (转) from our cards to the retailer's (零售商的) card. When all the money is used up, we will be able to "reload" it by inserting it into a telephone, dialing our bank account and putting money to the card from the account. If we want to transfer money from our cards to a bank account, we will use the same method. Smart cards will be able to hold several different currencies at the same time. So if we go abroad, we will be able to use our smart cards in the same way.

    Interactive telephones

    Human telephones will be replaced by talking computers. These computers will recognize speech, ask us what information we need, find the information and change it to speech. If we want to book a flight or pay a bill by phone, we will ask a talking computer to do it. Of course, this won't happen until all the technology is in place, but when it is we will soon get used to using computers in this way.

    ________________

    Traffic congestion (拥挤) in cities will be reduced because drivers will use electronic maps to find the quickest way to their destinations and avoid traffic jams. Because people have to pay to drive in cities, they will stop using their cars and use public transport instead. Speed control systems will be built into cars. These systems will control the speed of the car according to the traffic and weather conditions and prevent accidents.

This morning, I saw the shocking headline: "Passenger Dies When Car Crashes in Driverless Mode". In the article, various people said that the public should oppose the idea of developing driverless cars. They said that some advances in technology were unnecessary and could even be dangerous. Hence, we should cease accepting technology just because it is new. The newspaper reported that the car company had already apologised for the accident, but the families of the deceased（死者）said it was not enough. Nevertheless, the company still claimed that most people would be travelling in driverless cars one day soon.

On the one hand, there are many different groups of people around the world who live happily in the absence of new technology. Probably the most well known are the Amish（亚米希人）,a group of Christians living in rural America. They do not own or drive cars, watch TV, or use the Internet. They have lived mainly as farmers since the 18th century, and they will probably be living the same way in the distant future. They advocate a simple life with an emphasis on hard work, family, and community. They think that is better than caring about luxuries or following the lives of the rich and famous. It could even be argued that the Amish's quality of life is better since they live in and appreciate the natural environment rather than living in large, polluted cities.

On the other hand, new technology has provided people everywhere with many benefits over the years. For example, the latest weather-tracking computer programmes give people lots of warnings about potential natural disasters, which saves many lives. Moreover, the Internet has made it possible for friends and family to keep in touch easily even if they are on opposite sides of the world. It has also made finding opportunities in life much easier, as it allows people to make larger networks of friends through using social media.

Personally, I have benefited quite a lot from technological advances. I found my career as an AI designer through a social media network. My health monitor, which I wear all the time, has also helped me get into the best shape of my life. Of course, when new technology changes the way we live, it can be a scary prospect.

Nevertheless, I will always look on the positive side of change and accept it rather than resist it.