What if you arrived home to find it delicious hot meal waiting for you, prepared by your very own kitchen robot? It might sound like science fiction. but professors at the university of Tokyo  have  taken  the first steps toward making that  scenario a reality. The team recently introduced a humanoid kitchen robot that can pour and other drinks into cups and serve the m to guests. When teating is over, the robot can also wash the dishes and put them away.

    In California, another interesting kitchen robot has been developed, called Readybot. It can pick up objects and either store them in  cabinets (橱柜）or put them in the trash. It also carries a separate floor-cleaning robot that can operate by itself. Unlike the Japanese robot, Readybot just looks more like a large box with arms and wheels.

    Readybot was created by engineers and designers who established a club called the Readybot  Challlenge. They believe that in the future millions of robots will be needed in homes to perform ordinary household tasks. Readybot is just the first step in their plan to create a robot that can do jobs not  only  in  kitchens but  in other rooms of homes and in offices as well.

    Clearly there are technological difficulties to solve before robots can cook a Complete dinner, and there arc also many safety concerns (忧虑） .Not everyone (especially parents) would be comfortable with the idea of robots in their house, manipulating hot pans and sharp knives. The European Commission recently funded(资助） a project to study these concerns. According to lead researcher Professor Chris Melhuish,“ Enabling  robots to work  safely with humans is a key need for the future development of robotics.”

    Your school asked parents about the social development in children in the last Parents' Meeting. Here are some opinions. Read the following information and answer the questions.

    As an old saying in China goes, “The days of the Sanjiu period are the coldest days.” “Sanjiu period” , which is in Minor Cold, refers to the third nine-day period (the l9th to the 27th day) after the day of the Winter Solstice(冬至). There are many different customs related to Minor Cold in China.

    Eating hotpot

    During Minor Cold people should eat some hot food to benefit the body and defend against the cold weather. Winter is the best time to have hotpot and braised mutton with soy sauce. But it is important to notice that too much spicy food may cause health problems.

    Eating huangyacai

    In Tianjin, there is a custom to have huangyacai, a kind of Chinese cabbage, during Minor Cold. There are large amounts of vitamins A and B in huangyacai. As huangyacai is fresh and tender, it is fit for frying, roasting and braising.

    Eating glutinous rice (糯米饭)

    According to tradition, the Cantonese eat glutinous rice in the morning during Minor Cold. Cantonese people add some fried preserved pork, sausages and peanuts and mix them into the rice.

    Eating vegetable rice

    In ancient times, people in Nanjing took Minor Cold quite seriously, but as time went by, the celebration of Minor Cold gradually disappeared. However, the custom of eating vegetable rice is still followed today. The rice is steamed and is unspeakably delicious. Among the ingredients (原料), aijiaohuang (a kind of green vegetable), sausages and salted duck are the specialties in Nanjing.

    Many people go to school for an education. They learn languages, history, geography, physics, chemistry and mathematics. Others go to school to learn a skill so that they can make a living. School education is very important and useful. Yet no one can learn everything from school. A teacher, no matter how much he knows, cannot teach his students everything they want to know. The teacher's job is to show his students how to learn. He teaches them how to read and how to think. So, much more is to be learned outside school by the students themselves.

    It is always more important to know how to study by oneself than to memorize some facts or a formula （公式）. It is usually quite easy to learn a certain fact in history or a formula in mathematics. But it is very difficult to use a formula in working out a maths problem. Great scientists, such as Einstein, Newton and Galileo didn't get everything from school. But they were all so successful. They invented so many things for mankind.

Above all, they knew how to use their brains.

    Reusable straw with cleaner & case

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    Aduro Homedome Smart Outlet (插座)

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    Omega AXL Inkless Pen

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    Altgalley chopsticks

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    (The New York Times, Oct.7) The 2019 Nobel Prize in physiology(生理学) or medicine was jointly awarded to three scientists — William G. Kaelin Jr., Peter J. Ratcliffe and Gregg L. Semenza — for their work on how cells sense and adapt to oxygen availability. The Nobel Assembly announced the prize at the Karolinska Institute in Stockholm on Monday.

    Their work established the genetic mechanisms(机制) that allow cells to respond to changes in oxygen levels. The findings have implications(启示) for treating a variety of diseases.

    Why did they win?

    "Oxygen is the lifeblood of living organisms(生物体)," said Dr. George Daley, dean of Harvard Medical School. "Without oxygen, cells can't survive." But too much or too little oxygen can be deadly. The three researchers tried to answer this question: How do cells regulate their responses?

    The investigators uncovered detailed genetic responses to changing oxygen levels that allow cells in the bodies of humans and other animals to sense and respond to fluctuations(波动), increasing and decreasing how much oxygen they receive.

    Why is the work important?

    The discoveries reveal the cellular mechanisms that control such things as adaptation to high altitudes and how cancer cells manage to hijack(攫取) oxygen. Randall Johnson, a member of the Nobel Assembly, described the work as a "textbook discovery" and said it would be something students would start learning at the most basic levels of biology education.

    "This is a basic aspect of how a cell works, and I think from that standpoint alone it's a very exciting thing." Johnson said.

    The research also has implications for treating various diseases in which oxygen is in short supply — including anemia, heart attacks and strokes — as well as for treatment of cancers that are fed by and seek out oxygen.