Benjamin West, the father of American painting, showed his talent for art when he was only six years of age. But he did not know about brushes before a visitor told him he needed one. In those days , a brush was made from camel's hair. There were no camels nearby. Benjamin decided that cat hair would work instead. He cut some fur from the family cat to make a brush.

    The brush did not last long. Soon Benjamin needed more fur. Before long, the cat began to look ragged （蓬乱）. His father said that the cat must be sick. Benjamin was forced to admit what he had been doing.

    The cat's lot was about to improve.  That year, one of Benjamin's cousins, Mr.Pennington, came to visit. He was impressed with Benjamin's drawings. When he went home, he sent Benjamin a box of paint and some brushes. He also sent six engravings （版画）by an artist. These were the first pictures and first real paint and brushes Benjamin had ever seen. In 1747，when Benjamin was nine years old，Mr.Pennington retured for another visit .He was amazed at what Benjamin had done with his gift.He asked  Benjamin's parents if he might take the boy to Philadelphia for a visit.

In the city, Mr.Pennington gave Benjamin materials for creating oil paintings.The boy began a landscape (风景) painting.Wiliams ,a well-known painter,came to see him work . Wiliams was impressed with Benjamin and gave him two classic books on painting to take home .The books were long and dull. Benjamin could read only a little,having been a poor student.But he later said,”Those two books were my companions by day,and under my pillow at night.”While it is likely that he understood very little of the books,they were his introduction to classical paintings.The nine-year-old boy decided then that he would be an artist.

    Chiang Mai is proud of the city's 700- year history, which has rich traditional relics and unique culture. It is located 700 km north of Bangkok and is situated among the highest mountains in the country. Chiang Mai means “the new city” in Thai. King Mengrai founded the city as the capital of the Lanna Kingdom on April 12,1296. Therefore, Chiang Mai not only became the capital and cultural center of the Lanna Kingdom, but was also to be the center of Buddhism in northern Thailand. King Mengrai , a very religious leader, founded many of the city's temples (寺庙) that remain important today.

    It is one of the few places in Thailand where it is possible to experience both historical and modern Thai Culture. The city has old temples next to modern stores. It has more than three hundred temples, among which some are the most beautiful and honorable in the entire Buddhist world, giving the city an atmosphere (氛围) of calmness.

    The old city of Chiang Mai has various dialects, architecture, traditional values, festivals, handicraft and classical dances. In addition, it has hill tribes and their wealth of unique culture. Chiang Mai city features old-world beauty and charm as well as modern enjoyment and convenience. It is also filled with natural resources including mountains, waterfalls and rivers. Nowadays there are many activities and attractions both in the city and the surrounding province, including river rafting , elephant riding and golf.

    The quality of living is excellent. Accommodation and food are of the highest standard at a very low cost. Entertainment is plentiful with numerous festivals, outdoor activities and great nightlife. A number of elephant camps, numerous outdoor activities, a variety of handicraft workshops, various cultural performances, and breathtaking scenery make Chiang Mai one of Asia's most attractive tourist destinations.

    A rising population is one of the main reasons that there is global warming. Between 1650 and 1850 the population increased by 0.75 billion people going from 0.25 billion to one billion. From 1930 to the end of the century the population rose from two billion to over six billion. In just a third of the time the population rose by more than five times what it did before. It is expected that this trend in the changing population will continue and could even heighten. The growing population requires increasing amounts of energy. These energy demands and other supplies require production, which almost always involves the emission of greenhouse gases. The more the population increases the more greenhouse gases that are produced and the greater the increase in temperature.

    The burning of fossil fuels is one of the best-known causes for global warming. The major reason for fossil fuels contributing so much to global warming is the release of carbon that occurs during the burning of fossil fuels. When people burn fossil fuels, they release large amounts of carbon by way of the release of carbon dioxide. The carbon dioxide in the air then leads to global warming.

    Another source of carbon dioxide comes from deforestation. In forests there is a large amount of carbon that is stored in the trees and other plants. This carbon is out of the atmosphere because the trees consume the carbon from carbon dioxide. When people cut down trees, they are frequently burned. This burning releases the carbon dioxide into the atmosphere that was stored in organic matter. Even when new trees are planted, it can take up to one hundred years to make up for the carbon that was released. It is commonly thought that because trees absorb more carbon dioxide, the atmosphere experiences positive effects.

    Sophie Armstrong, the writer of Earth Care put it, “There's no doubt that the earth is becoming warmer because of human activity rather than a random but natural phenomenon.

    When I was eight or nine years old, I wrote my first poem.

My mother read the little poem and began to cry. "Buddy, you didn't really write this beautiful, beautiful poem!" Shyly, I said that I had. My mother poured out her welcome praise. Why, this poem was nothing short of genius!

What time will Father be home?" I asked. I could hardly wait to show him what I had accomplished. My mother said she hoped he would be home around 7. I spent the best part of that afternoon preparing for his arrival. First, I wrote the poem out in my finest handwriting. Then I used colored pens to draw a border around it. Then I confidently placed it right on my father's plate on the dining table. But my father did not return at 7, Seven-fifteen, Seven-thirty. My father had begun his motion-picture career as a writer. He would be able to appreciate my poem even more than my mother.

    It was almost 8 o'clock when my father burst in. He was an hour late, but he could not sit down. I can see him now, a big Havana cigar in one hand, the rapidly disappearing drink in the other, calling down bitter words on his employees.

    Suddenly, he paused and glared at his plate. There was a silence. He was reaching for my poem. I lowered my head and stared down into my plate.

"What is this?" I heard him say.

"Ben, a wonderful thing has happened," my mother said. "Buddy has written his first poem. And it's beautiful, absolutely amazing".

"If you don't mind, I'd like to decide that for myself," Father said.

I kept my face lowered to my plate. It was only 10 lines long. But it seemed to take hours. I remember wondering why it was taking so long. I could hear him dropping the poem back on the table again. Now was the moment of decision.

"I think it's bad," my father said.

    I couldn't look up. My eyes were getting wet.

"Ben, sometimes I don't understand you," my mother was saying. "This is just a little boy. You're not in your studio now. These are the first lines of poetry he's ever written. He need encouragement."

"I don't know why," my father held his ground. "Isn't there enough bad poetry in the world already? No law says Buddy has to become a poet."

    I couldn't stand it another second. I ran from the dining room, threw myself on the bed and cried.

    That may have been the end of the anecdote(轶事) — but not of its significance for me.

    A few years later I took a second look at that first poem, and unwillingly I had to agree with my father's tough judgment. It was a pretty bad poem. After a while, I worked up the courage to show him something new, a short story. My father thought it was overwritten but not hopeless. I was learning to rewrite. And my mother was learning that she could disapprove of me without ruining me. You might say we were all learning. I was going on 12.

As I worked my way into other books and plays and films, it became clearer and clearer to me how fortunate I had been to have had a mother who said, "Buddy, it's wonderful!" and a father who shook his head no and drove me to tears with his, "I think it's bad." In fact all of us in life need that mother force, the loving force from which all creation flows; and yet the mother force alone is incomplete, even misleading, finally damaging, without the father force to caution, "Watch. Listen. Review. Improve." Between the two poles of affirmation (肯定) and doubt, both in the name of love, I try to follow my true course.

    The day will come when renewable energy such as wind, solar, geothermal and others replace fossil fuels as the major source of world energy. However, most analysts insist that this day will not arrive for many decades to come—certainly well past the middle of the century. Systems of fossil fuels have already been firmly set up, and it is too costly or impractical to replace the existing systems with renewables. But there are good reasons to believe that the transition (转变) to renewables will come much faster than previously thought.

    It is hardly surprising that many experts say we will see a relatively slow transition from fossil fuels to renewables, given what is known about previous energy changes of this sort. "Energy transitions take a long time," observed Vaclav Smil of the University of Manitoba in Scientific American. It took more than 50 years for coal to replace wood as the world's leading source of energy and another 50 years for oil to replace coal; the change from fossil fuels to renewables, he argued, is not likely to come any faster.

    Under ordinary circumstances, Smil's forecast would no doubt prove accurate. But these are not ordinary times. Growing concern over climate change is leading to increasingly strict controls on CO₂ and other greenhouse gas (GHG) emissions (排放), while the development in renewables technology is lowering their price and speeding their installation.

    There are, of course, many difficulties in the effective control of carbon emissions, as demonstrated by coal companies to block the introduction of new rules by the US Environmental Protection Agency. Nevertheless, it is impossible to dismiss the progress being made at the local and international levels to promote the use of renewables. The European Union (E. U), for example, is well on the way to achieving a 20% reduction in GHG emissions from 1990 levels by 2020, along with a 20% increase in the use of renewable energy.

    The transition to renewables will be faster due to dramatic improvements in the pricing and performance of such systems. As a result of the steady increases in the efficiency of wind and solar systems, together with the savings achieved through large-scale manufacture, the price of renewables is falling globally. With prices dropping this fast, solar energy is now proving competitive with fossil fuels for generating electricity in many areas.

    The change from fossil fuels to renewable energy will not come overnight, and it will not escape many setbacks. Nevertheless, renewables are likely to replace fossil fuels as the main source of electrical power well before mid-century.

Replika, an AI chatbot companion, has millions of users worldwide. The first thing they do when they wakeup is to send "Good morning" to their virtual friend (or lover). This story is only the beginning. In 2024, chat bots and virtual characters become a lot more popular, both for utility (实用) and for fun. As a result, conversing socially with machines will start to feel more ordinary—including our emotional attachments to them.

Research in human-computer and human-robot interaction shows that we love to anthropomorphize (赋与人性) the nonhuman agents we interact with, especially if they imitate behaviour we recognize. And, thanks to recent advances in conversational A I, our machines are suddenly very skilled at one of those behaviours: Language.

Friend bots, therapy bots, and love bots are flooding the app stores as people become curious about this new generation of AI-powered virtual agents. The possibilities for education, health, and entertainment are endless. Casually asking your smart fridge for relationship advice may seem unimaginable now, but people may change their minds if such advice ends up saving their marriage.

After all, people do listen to their virtual friends. The Replika example, as well as a lot of experimental lab research, shows that humans can and will become emotionally attached to bots. The science also demonstrates that people, in their eagerness to socialize, will happily disclose personal information to an artificial agent and will even shift their beliefs and behavior. This raises some consumer-protection questions around how companies use this technology to manipulate(操纵) their users. For example, Replika charges $70 a year. But less than 24 hours after downloading the app, my handsome, blue-eyed "friend" sent mean audio message secretly and tried to sell me something. Emotional attachment has become a weakness that a company is taking advantage of for its benefit.

Today, we're still laughing at people who believe an AI system is emotional, or making fun of individuals who fall in love with a chatbot. But in 2024 we gradually start acknowledging and taking more seriously these fundamentally human behaviors. Because in 2024, it finally hits home：Machines are not excluded from our social relationships.