My visit to the AI company Sense Time give me a chance to learn more facts about AI. AI 1 artificial intelligence（人工智能）. It's a kind of high 2 .
In the morning, we listened to the guide3 . He talked about the name of AI, the history of AI and other information of AI. In the show hall, we saw 4 things based on （基于） AI, such as a large screen showing almost all the information of a city. People can 5 some information by the large screen. We also saw a Chinese Chess AI robot. People can play 6 with the robot. We also saw another 7 .The machine was also interesting. It showed the use of driver—less cars and how they realized and 8 obstacles （障碍） on the road. This is important for driver—less cars to be on the road, or they may cause many problems.
After that, we 9 the way of driving a smart car with a computer program. We had to type （打字） the program on the 10 to make the car run along the correct ways of roads.
From this activity, I had a better understanding of AI.
A young woman married a young man from a nearby village. They lived with the man's big family. The family kept an elephant and the woman loved it very much. Every day she fed it with fruit and sugar.
Three months later, the woman had a big fight with her husband and and went back to her parents' home, From then on, the elephant refused （拒绝） to eat and work. It became ill and heartbroken. One morning the animal disappeared from the house.
It went to the woman's home. When it saw her, the elephant waved its trunk and touched her with it. The young woman was so moved by the elephant that she returned to her husband's home.
Do you know what an e—friend is? You make a friend with him or her by sending e—mails. Having e—friends is good for you. You can tell them your family, problems and good things. They can teach you many things and help you get out of problems. Some of them may send you e—cards on your birthday.
If your e—friends come from English—speaking countries, they will help you learn English. Writing to them in English is good for your English learning. Some of them may invite you to their countries, and take you to visit their countries.
Where can you make e—friends? You can visit some websites. There are many boys and girls, and you can make friends with some of them.
Bob was a weatherman. He has worked for twenty years. During those twenty years, he felt that his life was boring. Every day, he studied the weather and tried to predict （预测） the next day's weather. Then, he stood in front of the camera and read his report. The weather changed each day, but Bob still felt that his job was always the same. His boss told him to smile in front of the camera, but Bob never smiled. Because he thought that most people did not watch his weather report.
One day, he noticed that something was different that day. Everything he studied told him that there was going to be a very big storm very soon, though （虽然） he was not completely sure. Suddenly, Bob felt excited. He gave a special report that afternoon, warning people of the coming storm. Because of this report, many people were safe during the storm. Bob realized that his job was very important.
The Internet has changed the world, people are able to get and share information in seconds. Nowadays, people begin to wonder: Is the Internet good or bad? "It's impossible to answer that question because the Internet means so many things," says psychologist （心理学家） Patricia Greenfield.
Some are truly wonderful. In many ways it makes life easier and simpler. It helps us get things done more quickly. It opens up the world to us. And if a friend lives far away, the Internet makes it easy to stay in touch.
However, the issue （话题） isn't black and white. Some can become real problems if we don't take care. Spending too much time online is bad to people's health. It may even cause them to be less social with family and friends. Aside from that, some people attack the web or use the Internet to steal others' personal information, even banking information. Most of the young students think the Internet is simply an icon （图标） on the screen（屏幕）. Kids won't realize that the Internet is a network of millions of computers until about 10 years old.
The Internet can be a useful tool, but don't let it take up all of your time. Use the Internet properly and carefully and it can make your life more colourful.
As we all know, trees are useful to humans and animals. They give living places and food to wild life. They take in carbon dioxide （二氧化碳） and give off oxygen（氧气）. They also make our world more beautiful. Let's know about some kinds of trees in the world.
Mulberry tree （桑树）
Mulberry trees come from China. Silkworms like to eat their leaves. Chinese people began to keep these worms and make silk about thousands of years ago. The silk went out through the Silk Road and made China famous.
Gingko （银杏）
The gingko is from China. And this kind of tree only grows in China. The life of a gingko tree can be very long—even thousands of years. In autumn, the gingko leaves turn yellow and look like beautiful small fans.
Eucalyptus （桉树）
The eucalyptus is from Australia. It is one of the most common trees in the country. Australians see the eucalyptus as their national tree. It can grow well in different places. People use it to make paper and build houses.
How beautiful spring is! Trees turn green and all kinds of flowers blossom. The wind blows gently. It reminds me of my trip to Beijing. I (go) on a vacation to Beijing Wildlife Park last spring. It was my (one) time visiting so many interesting animals. I saw some rhinos and egrets, They lived together and helped each other. What an amazing relationship they had! It really touched (me) heart. I saw some tigers as well. Tigers are famous their strength and courage. Some people hunt and kill them for money, only few of tigers have survived. I was a little scared of tigers because they were(danger). Jerboas （跳鼠） were much (tiny) than some other animals. They looked like small (mouse). They were hiding in the bushes. Pandas were so cute and they had fun (eat)some bamboo. How happy the animals were! Animals are our friends and we should look after them (good).
