The first telephone was invented by Alexander Graham Bell in 1876.made communication easier.the telephones were only fixed in post offices at that time. People had to go there to make calls.(late), a cellphone was developed in 1973 in America. It was one of the most(use) inventions. People can use cellphones to communicate with others mucheasily. They can take them anywhere to make private calls, even vision calls. Cellphones have many other functions, such as(send) messages, taking photos and reading online.
The first TV set was invented by an English(science), John Logie Baird, in 1925. The invention helped people watch films at home insteadgoing to the cinema as before. At first, TV sets broadcast black white pictures and they were heavy and thick. Then, digital TV sets came into being. They're light and thin. Many TV programmes are availableany time, People can use the IPTV (record) and replay programmes now.
In recent years, with more and more cars on the road, flying robots are used to deliver(递送) mails. Flying robots can 1mails to people's houses without having to deal with heavy2.But they will spend too much time in returning. A research center is trying to improve its flying robots with the3of homing pigeons(信鸽).
Homing pigeons are pigeons that are4trained to fly home from somewhere else. In tests, researchers5that homing pigeons were6efficient(高效的) than flying robots at returning to their home. So the research center is trying to use a flying robot, together with a7, to deliver mails. After the robot finishes its tasks, it can8the pigeon back in the shortest possible time.
Although it will cost more money to9pigeons, the research center says that it can10time. And the time it saves will make up for the cost.
When Chinese people talk about Chinese tea culture today, they won't miss an important person in Chinese history-Lu Yu, respected as a "Sage of Tea (茶圣)" for his achievements in the Chinese tea culture. He is best-known for The Classic of Tea, the first work on growing, making and drinking tea.
Lu was born in Jingling in 733 A.D.As a child, he became a student of Zou Fuzi. Thanks to his teacher's guidance, he learnt a lot. He often made tea for his teacher. He also took care of his fellow students' health using his knowledge on tea and herbs (草药) .
Lu Yu often went to the countryside to gather tea leaves and herbs. On one of those trips, Lu Yu found a spring. The water was quite clear and clean. When Lu made tea with this spring water, he found the tea tasted better than usual. From then on, he realized the importance of water quality in making tea.
In 752 A.D, Lu Yu finished his studies and returned to Jingling, where he met Cui Guofu. Both men shared the same interests in tea, literature (文学) and poetry. They soon became good friends. Since then, the two spent much time travelling, drinking tea and writing poems together.
This period was important to Lu Yu as a man of literature. Culi, with his rich experience and skills in writing, became a coach of Lu. He provided necessary help with Lu's writing. It was during this time that Lu finally wrote the amazing work, The Classic of Tea.
①Lu Yu wrote The Classic of Tea.
②Lu Yu became a student of Zou Fuzi.
③Lu Yu made friends with Cui Guofu.
④Lu Yu found water quality was important.
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— I'm sorry to hear that.
— Tomorrow morning.
