We are all busy talking about and using the Internet ,but how many of us know about the history of the Internet?

      Many people are surprised when they find that the Internet was set up in the 1960s.At that time, computers were large and expensive. Computer networks(网络)didn' t work well .If one computer in the network broke down, then the whole network stopped. So a new network system(系统) had to be set up. It should be good enough to be used by many different computers. If part of the network was not working, information could be sent through another part. In this way the computer network system would keep on working all the time. At first, the Internet was only used by the government, but, in the early 1970s, universities, hospitals and banks were allowed to use it too.

    However, computers were still expensive and the Internet was difficult to use. By the start of the 1990s, computers become cheaper and easier to use. Scientists had also developed software(软件) that made “surfing(浏览)” the Internet more convenient (方便).

    Today it is easy to get on-line and it is said that millions of people use the Internet every day. Sending e-mail is more and more popular among students.

   The Internet has now become one of the most important parts of people's life.

    More than 1,000 different kinds of pieces of plastic, including 115 cups, 25 bags, four bottles and two pairs of shoes, have been found inside a dead whale(鲸鱼) in Indonesia, according to local officials.

    When the whale was found on the island, it was already decomposing when animal doctors arrived. So they were unable to be sure if the plastic caused its death, said Lukas, the leader of the World Wildlife Fund in Indonesia. The plastic weighed about 6 kilograms, or 13 pounds, he said.

    But pictures of the dead whale caused a warm discussion. The people in the country have started to realize that it is because of using too much plastic. So has the government. Indonesia, a nation of about 260 million people was the world's second-biggest producer of plastic waste in 2018, behind only China.

    If the whales eat too much plastic, they will have a wrong feeling. They think that they are full. And that will lead them to eat less food that provides all the good things they need, said Nicholas who is the leader of the Ocean Conservancy. Moreover, eating too much plastic can make them reduce their weight, their energy and slow down their swimming. As a result, whales are easier to be hurt by the sharks and many other dangerous animals in the sea.

    More than 800 kinds of animals in the sea are affected by about 8.8 million tons of plastic which is thrown away freely in the ocean each year. Plastic can also stop the animals moving freely and sometimes they will cause them to die because they have to be under the water for too long. Some plastic can make a small hole in their stomachs after they eat it.

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You can learn a lot in a club. After you join a club, you can know how to play basketball, how to cook or how to speak English. These new things make you better. Also, good chances like a basketball match, a music festival or an English show, are easy to get when you are in a club. 

In a club, you can meet new people and make friends with them. Then, you can play games and have a great time with them. They can be your teachers too, and you can get new things from them. 

At last, joining a club makes you busy. You always have things to do, so your life will be quite interesting. 

The Taojinshan Greenway in Shenzhen has been open to citizens since July, 2019, Sitting at the west side of Shenzhen Reservoir, it is as long as 7.07 kilometres.

With plants along both sides and lakes lying at different sites, tourists can enjoy the beauty of nature all the way. If they are tired, they are free to take a rest at the 3 stops. Besides, five unused guard posts(岗亭) along the old route have remained. They are sightseeing platforms for visitors to feel the culture behind the place.

Of all its 13 scenic spots, 8 had AI helpers. From them, visitors can gain information on parking, tour guide services and more. The smart greenway, with free Wi-Fi, also provides environmental date, such as temperature, wind speed and air quality. What's more, it can give visitors warnings of coming extreme(极端的)weather and natural disasters, including rainstorms and typhoons that may hit Shenzhen.

"Started in the middle of 2015, the building process of the Taojinshan Greenway has taken good care of the wildlife and environment nearby," said Yang Shiming, an official in charge of the project.

The greenway is an example of construction

 (建筑) projects without doing harm to nature. It also shows the role that technology plays in building a smart greenway for more life convenience.

Drones（无人机）are like planes, but come in many shapes and sizes. They have no pilots and are controlled from outside the drones. During these years, they have been used to attack（进攻）enemies or moved goods（货品）in dangerous areas. 

Now small drones are part of people's lives. For example, people use drones to take photos or make videos. Besides, a drone delivery（n.投递）service has proved（证明）successful. 

Online store JD can use drones to deliver small packages（包裹）. It has built several drone stations so that it can load（装载）and deliver（v. 投递）its packages. 

Drones have made our shopping experience different. We can order a new coat in the early morning and it will be delivered before we finish breakfast. 

Bizzby Sky, a UK company, has created a delivery service for small goods. Open a smart phone app, enter your address, set a time and pay enough money for the delivery service. Then in minutes, a drone will do tasks for you. 

However, any drone company needs government permission（允许）to fly its drones in many countries. We believe we will see more and more drones with goods fly in the sky very soon.