Hover Camera

    Wang Mengqiu, the inventor of Hover Camera, was born in Hangzhou in 1982. He once studied at Stanford University in the United States. He became famous overnight (一夜成名)because of the invention.

    Forget selfie sticks(自拍杆)! Compared with other cameras, Hover Camera has many advantages.

    *It can fly and stay in midair, track your face and even follow you to make sure it gets the perfect picture.

    *It can be controlled by using a smartphone.

    *It records movements with a 13MP camera and takes 4K video.

    *It is the best choice for weddings, sports games and holidays.

    Mr. Wang also said, "The main design consideration is easy and safe to take for the users. It's .very light and small. It can be folded(折叠) in two, so it can be easily put into a bag. When the power is low, it can land on the ground safely on its own. "

    It's reported that the company has raised $ 25 million to produce it. Hover Camera can be bought now. The price is $ 599.

    Many people thought a computer wasn't supposed to be able to beat a top master at the ancient Chinese game, Weiqi, for at least another 10 years. But AlphaGo, an artificially intelligent system (人工智能系统) designed by Google, made it. It easily beat Lee Sedol last year, one of the best players in the world. It challenged the world's top players to show how much progress it had made over the past few years.

    In late May, 2017, AlphaGo appeared in China and played against 19-year-old Ke Jie in Wuzhen, China. He is No. 1 player now in the world. However, the result wasn't out of people's expectation. He lost the match. Though Ke Jie tried his best and he once saw the victory just a step away, he lost his best chance when he became excited.

    At the press conference (新闻发布会) after the match, Ke Jie was interviewed by the reporters. He said he had realized how powerful AlphaGo was, and it was getting perfect. When a Chinese reporter asked him in English, the reporter spoke so fast that the interpreter (口译员) couldn't catch him. Ke Jie got kind of angry and told him that it was unnecessary for two Chinese to speak in English. The reporter apologized to him and offered to ask him for a coffee.

    The cat and mouse game is over, but the challenge between man and robots will still go on.

    Bike-sharing has swept across China, with an increasing number of people choosing bike riding instead of driving. The bike that the service company provides has GPS or Bluetooth on it, and those bikes can be easily unlocked with a smartphone and left anywhere in public. Bike-sharing allows people to borrow a bike from one place and return it at another place easily.

    In some cities, we can see more and more people riding this kind of sharing-bikes. It's very convenient to use the bikes if you have a smartphone. First, you have to download such an app on your smartphone. Then what you need to do is find a nearest hike through the app, scan the QR code on the bike or connect your phone with the bike over a Bluetooth wireless connection. You will find the bike can be unlocked itself. Then you can enjoy your trip. What's more, the greatest advantage of hike- sharing is that you can easily find one and never worry about where to park it. The cost of riding depends on the time that you spend. Normally, every hour you ride, you need to pay one yuan. It doesn't cost so much, does it?

    At the same time, some people park the hikes in their own homes. Besides, some people don't value the bikes. Now service companies are trying to solve the problems like being stolen.

    Technology and science have changed our social lifestyles. We have to say bike- sharing brings us more convenience without doubt. And we also hope that people can not only enjoy it but also put it to good use.

    Some students are talking about the inventions.

    Lucy: The telephone was invented by Alexander Graham Bell. He was born in 1847. In 1875, Mr. Bell learnt how to send (音乐的) notes through an (器械) similar lo a telephone. Finally he invented the telephone in 1876. Today the telephone is used around the world.

    Jin Long: The abacus is an (古代的) invention, but we still use it today. It was invented a few (世纪) ago. Though China is a (发展中的) country now, I am proud of being a Chinese.

    Tom: I think the invention of basketball is the best. Because I like basketball and 1 think it is an (活泼的，积极的) sport. When we play basketball, we should be (分开) into two groups. Players on the same team must work together to get the ball into the other team's (篮筐). At the same time, they need to stop the competing team from getting the ball into their (自己的) basket. It was invented by a (加拿大人) called James Naismith.

A: Hi, Danny! What's this in English?

B: Oh, it's a key.

A: What's it of?

B: Metal.

A: What is it used for?

B: it's used for opening and a door.

A: I see. That's . Can I have a try?

B: Yes, please.

A: Look! It works. By the way, what's that over there?

B: You may have a guess.

A: It strange. It's not like a bike or a plane. Who invented that machine?

B: It was invented by my father. You may call it "pbike".

A: When was it invented?

B: Yesterday morning.

A: What is it used ？

B: It's used for riding or flying.

A: But how does it work?

B: You can ride it like a bike. As you ride faster and faster, it can fly like a plane.

A: That sounds interesting. I think your father is so great！

B: I think so.

A: Do you mind my having a try?

B: Of course not.

    Nowadays, with the development of Internet technology, two-dimensional code (二维码) is very popular among us. It's also (call) quick response code (QR code). It's a group of black square dots on a white background. This special code was invented a Japanese company in 1994. It's (wide) used all over the world.

    QR code is used (store) information. It can also store pictures. It is easy to use a QR code. If you want to get the information, just take out your cellphone and scan (扫描) the code by a special app, and then you can get easily.

Today, QR codcs are popular in China. There are QR codes on televisions and the Internet. The codes have been used and printed on Chinese train tickets 2010. When a machine scans the code on the ticket, information of the ticket owner and the train (appear) on the screen in a few seconds.

    QR codes have many special uses. For example, in 2008, Japanese company planned to put QR codes on gravestones (墓碑). By scanning the code, visitors could get information about the departed (去世的) person. Recently, special cards QR codes were introduced to old people in some cities in China. If they get (lose), people can know about their names, addresses and telephone numbers of their family members by scanning the codes.