My best friend Lisa and I carefully wrote our words with a No. 2 pencil. We took turns writing down the sentences. "Dear Miss Hanley, "we wrote, "you like Kathleen better than you like us. That isn't fair. "Miss Hanley was our second-grade teacher. She was in her 20s, with short, dark, curly hair and lovely grey eyes.

You're a very talented writer, "Miss Hanley often told me. "If you want to be an author when you grow up, you will e. "This excited me. A few weeks into this school year, Lisa and I had co-authored a play based on our favorite novel, Little Women. And we performed the play in front of the class. When the curtain came down, the applause from the other students was light. But Miss Hanley clapped strongly, saying, "Great! Great!" Lisa and I ignored the other kids, and were high on her praise for days.

I didn't envy Lisa's relationship with Miss Hanley. Sharing Miss Hanley was a bond between us. Lisa felt more like a sister to me than my real sister. In Miss Hanley's class we behaved ourselves, although we couldn't help comparing ourselves with Kathleen, whose demeanor (风度) and dress were perfect. Kathleen lived in he family's big house with a beautiful garden. Lisa and I lived in small apartments. Her hair was clean and tidy. My hair was loose and wild. Kathleen did very well in her studies and of course Miss Hanley liked her.

Lisa and I continued writing our note to Miss Hanley, "You call n Kathleen more than you call on us. You like her because she is a goody-goody (善于讨好卖乖的人). That's not fair! Just because we are not goody-goodies does not mean you should like us less. "My heart was pounding as we left the note before class on Miss Hanley's desk.

It was not uncommon to see a person like me in an amusement park, who held purses, cellphones and sunglasses while others enjoyed themselves riding roller coasters. I admitted their courage, but refused to challenge myself.

One day when we were at the Happy Amusement Park in Seattle, my friends tried to get me to ride a roller coaster. But the click, click, click of the cars climbing up the tracks made me scared. The stop at the top, before falling with people's screams, seemed terrible.

My friends were still trying to persuade me, and I was saying no as usual, when I suddenly saw a familiar face, one I had never seen in real life. It was Raine, a popular young tennis star at the top of her game, who was my heroine. I pulled out a pen and the only paper that I could find and walked to her.

She was making her way through a rope that led to a ride called the Loudest Scream. I was running fast because I didn't want to miss the chance to meet her face to face, but I was also a bit nervous. So I waited at the exit to calm down and get closer to her as she came off the ride.

Several minutes later, she got out from the exit, laughing and talking with her brother. I focused on her walking toward me. She walked past. It was more difficult to talk to a star than I thought, but I had to take the chance. I called her name, not very confidently, but more like a question, “Raine?” She turned around. Our eyes actually met. “Would you mind signing for me?” I asked, handing the pen and paper toward her. Her hand wrote over the paper and she said, “You are the first person who has recognized me in the park so let's take a roller coaster together.”

Her warm invitation actually filled me with mixed feelings.

My friend came up and asked, “Are you sure you will take the Loudest Scream?”

7 . Babies are surrounded by human language, always listening and processing. Eventually, they put sounds together to produce a “Daddy” or a “Mama”. But what still confuses neuroscientists is exactly how the brain works to put it all together.

To figure it out, a team of researchers turned to a frequent stand-in (代替) for babies when it comes to language learning: the song-learning zebra finch. “We’ve known songbirds learn their song by first forming a memory of their father’s song or another adult’s song. Then they use that memory to guide their song learning,” said Neuroscientist Todd Roberts. “It’s been a long-term goal of the field to figure out how or where in the brain this memory is. This type of imitative learning that birds do is very similar to the type of learning that we engage in regularly—particularly when we’re young, we use it to guide our speech learning.”

Roberts and his team had a feeling that the interface (交叉区域) between sensory areas and motor areas in the brain was critical for this process, and they focused on a group of brain cells called the NIf.

“In order to prove that we could identify these circuits, we thought if we could implant a false memory.” First, they used a virus to cause the neurons (神经元) in the birds’ NIf to become sensitive to light. Then, using a tiny electrode as a flashlight, they activated (激活) the neurons. The length of each pulse of light corresponded with the amount of time the neurons would fire. And the birds’ brains interpreted that time period as the length of each note.

Soon enough, the birds began to practice the notes they had learned, even though they never really heard the sounds. Amazingly, the birds produced them in the correct social situations. The researchers say this is the first time anybody has found exactly a part of the brain necessary for generating the sorts of memories needed to copy sounds.

“This line of research is going to help us identify where in the brain we encode memories of relevant social experiences that we use to guide learning. We know that there are several neurodevelopmental disorders in people that have really far-reaching effects on this type of learning.”

9 . Like most robots, social robots use artificial intelligence to decide how to act on information received through cameras and other sensors. The ability to respond in ways that seem lifelike has been informed by research into such issues as how perceptions (知觉) form, what constitutes social and emotional intelligence, and how people can infer others’ thoughts and feelings. Advances in Al have enabled designers to translate such psychological and neuroscientific insights into algorithms that allow robots to recognize voices, feces and emotions; interpret speech and gestures; respond appropriately to complex verbal and nonverbal cues; make eye contact; speak conversationally; and adapt to people’s needs by learning from feedback, rewards and criticisms.

A 47-inch humanoid (类人物) called Pepper (from SoftBank Robotics) recognizes faces and basic human emotions and engages in conversations via a touch screen in its “chest,” About 15,000 Peppers worldwide perform such services as hotel check-ins, airport customer service, shopping assistance and fast-food checkout. Temi (from Temi USA) and Loomo (Segway Robotics) are the next generation of personal assistants—like Amazon Echo and Google Home but mobile, providing a new level of functionality. Loomo, for instance, is not only a companion but can also transform on command into a scooter (小型摩托车) for transport.

Social robots have particular appeal for assisting the world’s growing elderly population. The PARO Therapeutic Robot (developed by Japan’s National Institute of Advanced Industrial Science and Technology), which looks like a seal, soft and cute, is meant to stimulate and reduce stress for those with Alzheimer’s disease and other patients in care facilities: it responds to its name by moving its head, and it cries for petting. Mabu (Catalia Health) engages patients, particularly the elderly, as a wellness aide, reminding them to take walks and medication and to call family members. Social robots are also gaining popularity with consumers as toys. Early attempts to include social behavior in toys, such as Hasbro’s Baby Alive and Sony’s AIBO robotic dog, had limited success. But both are resurging (复活), and the most recent version of AIBO has advanced voice and gesture recognition, can be taught tricks and develops new behaviors based on previous interactions.

Worldwide sales of consumer robots reached an estimated $5.6 billion in 2018, and the market is expected to grow to $19 billion by the end of 2025, with more than 65 million robots sold a year. This trend may seem surprising given that multiple well-funded consumer robot companies, such as Jibo and Anki, have failed. But a wave of robots is lining up to take the place of old robots, including BUDDY (Blue Frog Robotics), a big-eyed mobile device that plays games in addition to acting as a personal assistant and providing home automation and security.

Louis Cha, better known by his pen name Jin Yong, was a Chinese wuxia novelist and essayist,     1    co-founded the Hong Kong daily newspaper Ming Bao in 1959 and     2     (serve) as the first editor-in-chief. He was Hong Kong’s most famous writer.

His wuxia novels have     3     widespread following in Chinese communities worldwide. His 15 works     4     (write) between 1955 and 1972 earned him a reputation as one of the greatest and most popular wuxia writers ever. By the time of his     5     (die) he was the best-selling Chinese author, and over 100 million copies of his works have been sold worldwide. His works have the unusual ability     6     (go) beyond geographical and ideological barriers separating Chinese communities of the world, achieving     7     (great) success than any other contemporary writer.

Most of his works     8     (translate) into many languages so far, including English, French, etc. Even the asteroid (小行星) 10930 Jinyong (1998 CR2) is named     9     him.We cannot thank him more for     10     he has done in novel literature.