With the victory of AlphaGo, a newborn robot produced by Google Company, in the world Go Champion, AI has been a new hot topic recently and has promoted widespread debate in our life.

How will AI affect our life? There are different viewpoints between different people. There are several notables, such as Stephen Hawking and Bill Gates, worrying about the development of AI. They are afraid that the abuse of artificial intelligence technology is likely to usher in a smart explosion situation, then the machine will continue to enhance their own skills and knowledge, and finally get beyond the human’s IQ. What's worse, they might attain emotion. In other words, the machine may be out of control at the end and even control the world on the contrary.

However, optimistic opinions are also accepted by numerous people. They are totally convinced that AI can bring more convenience, more efficient and more wealth to us. Most significantly, AI will enhance human productivity, then promote social development.

From where I stand, I am in favor of artificial intelligence, because it can apply to all kinds of fields and lead us to a more convenient life. For example, when we need some medical help, there may be no necessary to go to hospital anymore. What we need is a smart phone embed a medical AI robot, which can check our health condition. Can you image how convenient and fast that is? Although those pessimistic ideas are reasonable, I believe that the benefits of AI outweigh the disadvantages.

Transportation has been greatly changed in the past few years. In ancient days, people used to travel by horse or carriage. The journey was often tiring and tedious. Then people had buses, trains and ships, which could shorten the time of the long-distance trip. Now we have not only more private cars, but also planes and high-speed rails. All of these modern transports could offer us a quick and pleasant travel. Thus, more and more people enjoy traveling very much these days. In conclusion, modern transportation has completely changed our life. Thanks to modern transportation, our world is becoming smaller and smaller.

As the New Year has passed away, I think the cold weather will pass away and gets warm soon, but I am wrong. This morning, it snows again and I have to wear a lot of clothes. I guess this is the last snow and the summer is coming soon. I miss summer. I can swim and play with my friends in summer.

Nowadays, more and more middle-aged people are suffering from insomnia, as life for the middle-aged is stressful indeed. For one thing, as they are the backbones of their companies, they have plenty of things to do at work. And they usually have to work overtime. For another, they have to take great responsibilities at home, for their aged parents need to be supported and their little children need to be brought up. That's why they don't have enough time to have a good rest.

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