AlphaGo is a computer program that plays the board game Go.

    In March, 2016, the pride of humankind was crushed (粉碎) by a computer. Google's AlphaGo defeated the South Korean grandmaster (围棋大师) Lee Sedol four games to one, as the world looked on with shock and awe (敬畏). Artificial intelligence (AI, 人工智能) had suddenly reached a new and unexpected height.

    But as smart as AlphaGo is, it's no longer the best Go “player” in the world. Google's artificial intelligence group, DeepMind, has created the next generation of its Go-playing program, called AlphaGo Zero. The new AI program is unique in the way it learned to play Go. Instead of learning from thousands of human matches, as its predecessor (前任) did, AlphaGo Zero mastered Go in just two days without any human knowledge of the game and defeated AlphaGo by day three, reported The Guardian. It then went on to defeat AlphaGo 100 games to zero.

    To learn how to play Go, AlphaGo Zero played millions of matches against itself using only the basic rules of the game to rapidly create its own knowledge of it. Like the previous version, it used “reinforcement (增强) learning to become its own teacher,” according to DeepMind's website.

    “It's more powerful than previous approaches,” David Silver, AlphaGo's lead researcher, told The Guardian, “because by not using human data, or human expertise in any fashion, we've removed the constraints (约束) of human knowledge and it is able to create knowledge itself.”

    AlphaGo Zero's approach to self-learning is a significant advancement in AI that could be applied to help solve some of the world's biggest problems, according to a recent research report published in the journal Nature. For example, DeepMind co-founder Demis Hassabis argues that AlphaGo Zero could probably find cures for a number of serious diseases within weeks, according to The Telegraph. Indeed, the AI is now being used to study protein folding, which is connected to diseases such as Parkinson's and Alzheimer's.

    So now that AI has exceeded (超过) the bounds of human knowledge, perhaps the question is not about what AI can learn from humans, but what humans can learn from AI. We can only wait and see.

    Many animals recognize their food because they see it. So do humans. When you see an apple or a piece of chocolate you know that these are things you can eat. You can also use other senses when you choose your food. You may like it because if smells good or because it tastes good. You may dislike sonic types of food because they do not look, smell or taste very nice. Different animals use different senses to find and choose their food. A few animals depend on only one or their senses, while most animals use more than one sense.

    Although there are many different types of food, some animals spend their lives eating only one type. The giant panda eats only one particular type of bamboo. Other animals eat only one type of food even when given the choice. A kind of white butterfly will stay on the leaves of a cabbage, even though there are plenty of other vegetables in the garden. However, most animals have a more varied diet. The bear eats fruits and fish. The fox eats small animals, birds and fruits. The diet of these animals will be different depending on the season.

Humans have a very varied（广泛的）diet. We often eat food because we like it and not because it is good for us. In countries such as France and Britain, people eat foods with too much sugar. This makes them overweight, which is bad for their health. Eating too much red meat and animal products, such as butter, can also be bad for the health. Choosing the right food, therefore, has become an area of study in modern life.

    Life is short. It may feel as if it takes forever sometimes, but the reality is that you live, and a short time later, you die. It happens so quickly that many people don't even realize they had a life until it's already over.

    ⒈{#blank#}1{#/blank#}

    If you don't believe in yourself, nobody will. Success starts in your mind, and if all you're doing is putting yourself down and predicting failure, it will become a self-fulfilling prophecy(预言){#blank#}2{#/blank#}instead of not believing yourself. Not only will you be happier and more successful, you'll also spread it to everyone around you.

    ⒉Stop Being Lazy

    Lazy people are annoying—it's like pulling teeth and getting them to do anything. If I can't do something as simple as going to the movies with you without wasting an hour convincing you to get your lazy butt (臀部) out of bed, I'd rather go alone. People have enough trouble motivating themselves{#blank#}3{#/blank#}

    ⒊Stop Wasting Time

    I've said it before. And I'll say it again{#blank#}4{#/blank#} Don't waste your time on unproductive things. If you want to explore the World's dark corners, that's great. I still associate with people who have not-so-kosher(没有固定工作的) careers, but I don't hang out with those people at the expense of my own short- and long-term goals.

    ⒋Stop Being Wasteful

    You don't finish your meals, and throw away food instead. You leave the faucet running when you brush your teeth,

{#blank#}5{#/blank#} You drive to places you could easily walk to, burning gasoline (a non-renewable resource). You are wasteful, and it needs to stop.

A. Think positively

B. wasting is a shame

C. Stop Being Selfish

D. Stop Doubting Yourself

E. pouring precious clean water down

F. Time is the most valuable resource we have

G. don't make your friends and family waste their energy motivating you as well

    People traveling long distances frequently have to decide whether they would prefer to go by land, sea, or air. Hardly can anyone positively enjoy sitting in a train for more than a few hours. Train carriages soon get crowded. Reading is only a partial solution, for the monotonous(单调的) rhythm of the wheels clicking on the rails soon makes you sleep. During the day, sleep comes in snatches. While at night you rarely manage to sleep. Inevitably you arrive at your destination almost exhausted.

    Long car journey are even less pleasant, for it is quite impossible even to read. On motorways you can, at least, travel fairly safely at high speed, but more often than not, the greater span of the journey is spent on narrow, uneven roads which are crowded with traffic.

    By comparison, trips by sea offer a great variety of civilized comforts. You can stretch your legs on the broad decks, play games, swim, meet interesting people and enjoy good food-always assuming, of course, that the sea is calm. If it is not and you are likely to get seasick, no form of transport could be worse. Even if you travel in ideal weather, sea journeys take a long time. Relatively few people are prepared to sacrifice up to a third of their holidays for the pleasure of traveling on a ship.

    Airplanes have the reputation of being dangerous and a little expensive. But nothing can match them for speed and comfort. Traveling at a height of 30,000 feet and at over 500 miles an hour is a pleasant experience. For a few hours, you settle back in a deep armchair to enjoy the flight. The real relaxation can be a free film show and some other services. An airplane also offers you an unusual and breathtaking view of the world. You really see the shape of the land. If the landscape is hidden from the view, you can enjoy the extraordinary sight of unbroken cloud plains that stretch on for miles before you, while the sun shines brilliantly in a clear sky. The journey is so smooth that there is nothing to prevent you from reading or sleeping. However you decide to spend your time, one thing is certain: you will arrive at your destination fresh and untired.

    Are you truly happy? What does it mean to be happy? What does it take to achieve happiness? {#blank#}1{#/blank#} The following are a few tips that I follow to create happiness in my life.

    Make a plan for achieving goals that you believe will make you happy. Your moods (心情) will very likely increase if you are going after something you value.

    {#blank#}2{#/blank#} It is easy to begin to think negatively when you are surrounded by people who think that way. On the contrary, if you are around people who are happy, their emotional state will be infectious.

    When something goes wrong, try to figure out a solution (解决办法) instead of being absorbed in self-pity. Truly happy people don't allow setbacks to affect their mood because they know that with a little thought they can.

    Spend a few minutes each day thinking about the things that make you happy. {#blank#}3{#/blank#} And this will lead you to continuous happiness.

    {#blank#}4{#/blank#} Whether you treat yourself to lunch  take a long, relaxing bath or simply spend a few extra minutes on your appearance, you will be subconsciously putting yourself in a better mood.

    Finding the humor in situations can also lead to happiness. Find a way to make light of a situation that would otherwise make you happy.

    Keeping healthy is another way to achieve happiness. {#blank#}5{#/blank#}

A. Surround yourself with happy people.

B. There are some tips in life that lead to happiness.

C. Eating healthy foods or being fit can have a great effect on your mood.

D. These few minutes will help you focus on the positive things in your life.

E. What makes you happy may be different from what makes someone else happy.

F. It is also important to take some time each day to do something nice for yourself.

G. These are important questions for anyone who is seeking happiness to ask themselves.

World War Ⅱ lasted from 1939 to 1945.Life changed for everybody,including women and children because of the war.Millions of people lost their lives during the war.The Diary of a Young Girl was a record of that time.The book was written by a girl named Anne Frank.

Anne Frank was born in Germany in June 1929.Because the German Nazis hated the Jews and warned to kill them,her family had to move to another country.In July 1942,they went into hiding in a secret place in her father's office.During that difficult time,Anne kept writing diaries until she and her family were discovered by the Nazis in August 1944.They were caught and sent to a Nazi camp.The next year,her mother died.In the same year,she and her elder sister died of illness,before the war ended.

After the war,her father collected her diaries and the book The Diary of a Young Girl came out in 1947.It has been put into over 30 languages since then.The book has been read by people all over the world.In her diary,Anne wrote down her thoughts,her feelings,her hopes and her dreams for the future,"I want this diary itself to be my friend,and I shall call my friend Kitty." "I can't spend all day complaining because it's impossible to have any fun!...Every day,I feel the beauty of nature and the goodness of the people around me.With all that,why should I be sad?"

The Diary of a Young Girl has also become a symbol of the greatness of the human spirit.It is called one of the wisest and most moving records on war.