1 . Bill Gates was born in 1955. He grew up in Seattle, Washington. When he was young, he was good at science and maths. And he wanted to be a scientist.

Bill started to play with computers when he was 13. At that time, computers were very large machines. Once he was interested in a very old computer. He and some of his friends spent lots of time doing unusual things with it. In the end, they worked out a software program with the old machine. Bill sold it for 4,200 dollars when he was only 17.

In 1973, Bill went to Harvard University. He developed the Basic Language for the first microcomputer. In his third year, he left Harvard. Bill began his company in 1975 with his friend Paul Allen. They thought that the computer would be a very important tool in every office and in every home, so they began developing software for personal computers. They developed the software to make it easier for people to use computers.

In 1999, Bill wrote a book. In the book, he told people how computer technology could solve business problems in new ways. It was one of the best-sellers on The New York Times’ list. Bill Gates has many hobbies. He enjoyed reading very much. He also enjoys playing golf and bridge.

4 . Laughter comes in many forms, from a polite and quiet laugh to a great hearty laugh. Scientists are now developing an AI system to recreate different laughs in proper social contexts. The team behind the laughing robot Erica said that the system could improve natural conversations between people and an AI robot. “We think that one of the important functions of conversational AI is empathy(共情),” said Dr Koji Inoue, the lead author of the research. “So we decided that one way a robot can empathize with its users is to share their laughter.”

The team have set out to teach their AI system the art of conversational laughter. They gathered training data from more than 80 daily dialogues between male subjects and the robot that was initially operated by four actresses remotely. The dialogue data was grouped into social laughs (where polite or embarrassed laughter isn’t involved) and laughter of joy. Based on the audio files, the algorithm(算法) learned the basic characteristics of social laughs, which tend to be softer, and merry laughs, with the aim of mirroring these inappropriate situations.

“Our biggest obstructor in the work was identifying the actual cases of shared laughter because as you know, most laughter is actually not shared at all,” said Inoue. “We had to carefully decide exactly which laughs we could use for our analysis and we couldn’t just assume that any laugh can be responded to. It was really not easy work.” The team said laughter could help create robots with their own distinct character although it could take more than 20 years before it would be possible to have a casual chat with a robot like we would with a friend.

“One of the things we’d keep in mind is that a laughing robot or algorithm will never be able to understand you or the meaning of laughter,” points out Prof. Sandra Wachter of the Oxford Internet Institute. “But with their development, they might get very good at tricking you into believing they understand what’s going on.”

5 . My community and state are still recovering from the disaster that hit the area recently. A wall of storms with hurricane force winds _____ late on a Friday evening knocking down trees, _____ roads, damaging homes, and destroying power lines. Hundreds of thousands of people suddenly _____themselves in the dark without water, electricity, air conditioning, telephones, internet, and television. They were _____ from the modern world suffering unbearable 90 degree plus heat with no help and no idea _____ it would be over.

The most _____ thing happened, however, as the reality of the crisis sank in: it brought out the best in us. While there were a few acts of _____ and stealing, they were overwhelmed (压倒) by the wave of _____ and compassion that came from the hearts of so many. People shared their food, ice, and gasoline. People who still had _____ opened their homes to those who had none. People rushed out to _____roads and homes of fallen trees. Selfless power crews worked around the clock to repair the damage and _____ electricity.

Life’s disasters strike all of us from time to time. No one is _____. We all get hurt. We all get _____. How we respond to them, though, is up to us. We can let them bring out the worst in us or we can let them bring out the best in us. We can _____ them like devils of selfishness or like angels of love. May you always bring the best from your heart and soul to whatever life may _____ at you then. May you live all of your days here with so much love that you sing and smile.

Yours sincerely,

Li Hua

7 . On Saturday 24 August 1918, it was raining cats and dogs and thundering over a city called Sunderland on the northeast coast of England. The storm lasted for only about ten minutes. People were surprised to see that it was not just rainwater falling from the sky. There were fish falling down, too! People came out to find out what was happening. They could not believe their own eyes. There were thousands of fish—sand eels (沙鳗)—lying on the ground. They were about seven centimeters long, and all were frozen solid (冻成硬块).

Sand eels swim together in large groups, often in sandy water, and are often found in large numbers in the North Sea, which reaches out to the east of Sunderland. How was it possible for these sand eels to fall from the sky and land on Sunderland?

Scientists believed the heavy thunderstorm that afternoon may have caused a waterspout (水龙卷). Waterspouts can be formed when strong winds move quickly in a circle over water. They are so powerful that anything less than one meter in length can be taken into them and forced into the clouds. The clouds carry whatever has been taken into them for long distances —sometimes over 150 kilometers. It’s very cold up there and everything soon freezes solid.

For hundreds of years there have been reports of small animals being taken into the sky through waterspouts. In 2009, dead tadpoles rained down on the city of Nanao in Japan. In 2012, fifty kilos of prawns fell from the sky over Sri Lanka. In 2017, fish fell on the coastal city of Tampico in Mexico.

It must be a very strange experience to see fish raining down on you. It would probably hurt if one fell on your head! With climate (气候) change and many reports of terrible storms, will the time ever come when it may really begin to rain cats and dogs?

8 . Two of the saddest words in the English language are “if only”. I live my life with the goal of never having to say those words, because they express regret, lost opportunities, mistakes, and disappointment.

My father is famous in our family for saying, “Take the extra minute to do it right.” I always try to live by the “extra minute” rule. When my children were young and likely to cause accidents, I always thought about what I could do to avoid an “if only” moment, whether it was something minor like moving a cup full of hot coffee away from the edge of a counter, or something that required a little more work such as taping padding (衬垫) onto the sharp comers of a glass coffee table.

I don’t only avoid (避免) those “if only” moments when it comes to safety. it’s equally important to avoid “if only” in our personal relationships. We all know people who lost a loved one and regretted that they had foregone an opportunity to say, “I love you” or “I forgive you.” When my father announced he was going to the eye doctor across from my office on Good Friday, I told him that it was a holiday for my company and I wouldn’t be here. But then I thought about the fact that he’s 84 years old and I realized that I shouldn’t give up an opportunity to see him. I called him and told him I had decided to go to work on my day off after all.

I know there will still be occasions when I have to say “if only” about something, but my life is definitely better because of my policy of doing everything possible to avoid that eventuality (可能发生的事). And even though it takes an extra minute to do something right, or it occasionally takes an hour or two in my busy schedule to make a personal connection, I know that I’m doing the right thing. I’m buying myself peace of mind and that’s the best kind of insurance (保障) for my emotional well-being.

A Bite of China

No trip would be complete without experiencing the local food culture.    1    (actual), China has various kinds of delicious food, including a wide variety of local snacks.

For most of the foreigners I have contacted, and myself    2     (include), Peking duck and Mongolian hotpot are the favourite Chinese dishes. China is a place    3     the food is not only delicious,but the    4    (cheap).

    5     my last night in Beijing before    6     (return) to the United States,I went to a Peking duck restaurant that had been suggested to me to try. What a beautiful place,with splendid woodblock prints on the walls, fresh flowers in the vases, and    7    (attract)silverware (银餐具) and beautiful chopsticks. I was handed     8     menu and found most of the prices were especially low for the high quality of the food.

Anyway,I ordered a whole duck,thinking I’d just take the rest back to my hotel    9    (eat) later if I couldn’t finish it. Unbelievably, none of the whole duck    10    (leave) on the plate in the end.