Before birth, babies can tell the difference between loud sounds and voices. They can even distinguish their mother's voice from that of a female stranger. But when it comes to embryonic learning(胎教), birds could rule the roost. As recently reported in The Auk: Ornithological Advances, some mother birds may teach their young to sing even before they hatch(孵化)。New-born chicks can then imitate their mom's call within a few days of entering the world.

    This educational method was first observed in 2012 by Sonia Kleindorfer, a biologist at Flinders University in South Australia, and her colleagues. Female Australian superb fairy wrens were found to repeat one sound over and over again while hatching their eggs, When the eggs were hatched, the baby birds made the similar chirp to their mothers—a sound that served as their regular “feed me!”call.

To find out if the special quality was more widespread in birds, the researchers sought the red-backed fairy wren, another species of Australian songbird. First they collected sound data from 67 nests in four sites in Queensland before and after hatching, Then they identified begging calls by analyzing the order and number of notes. A computer analysis blindly compared calls produced by mothers and chicks, ranking them by similarity.

    It turns out that baby red-backed fairy wrens also emerge chirping like their moms. And the more frequently mothers had called to their eggs, the more similar were the babies' begging calls. In addition, the team set up a separate experiment that suggested that the baby birds that most closely imitated their mom's voice were rewarded with the most food.

    This observation hints that effective embryonic learning could signal neurological(神经系统的) strengths of children to parents. An evolutionary inference can then be drawn.“As a parent, do you invest in quality children, or do you invest in children that are in need? ”Kleindorfer asks. “Our results suggest that they might be going for quality. ”

    It was my first day back home since starting college. A lot had changed in the last year. Not with my hometown but with me. I had left as a 17-year-old boy and had now returned as an 18-year-old man. In the city, I was living on my own, had a part-time job and was studying. Even the government recognized I was an adult: I had a driver's license. So here I was, on my summer vacation, walking down the main street with my father, desperate for him to acknowledge how mature I was. When his recognition failed to appear, I took matters into my own hands. “Dad,” I said casually, “I'm thirsty. Let's go for a beer.” It was the first time I'd ever mentioned beer in front of my father, let alone ask him to drink one with me.

    He turned to me with a curious expression on his face. “A beer? Well, 1 guess you're old enough now. Let's go to Sailors' Bar. It's where my cousin Tom, your uncle, used to drink. You remember him, right?”

    I had only some vague recollection of my uncle. He was the black sheep of the family. We didn't talk about him much. What ever happened to Uncle Tom, Dad? I haven't seen him in years,” I said as we continued towards the bar.

     “Neither have I, unfortunately. He was a good kid once. But things changed,” my father said mournfully. As a boy, he explained, there had been no better-behaved boy than Tom. But after leaving school, he moved to the city and fell in with bad company. He started going out every night, drinking in nightclubs and playing cards. Soon he lost everything and had to beg his mum to pay his debts. She agreed on condition that he returned home.

    My dad took a deep breath and continued his tale. "Things settled down for a while. He married a lovely woman, gave up his bad habits. But it didn't last. He was soon back to his old ways. He couldn't resist. He was at Sailors, Bar almost every night. His poor mother died of grief and shame. His wife followed her soon after.

     “What ruined him was alcohol He told me once, when a man begins drinking, he never knows where it'll end. ‘So', Tom warned me. ‘be cautious about your first drink!'

     “He went from bad to worse. Last year Tom sent me a letter saying he had been found guilty of stealing, and sent to prison for ten years.”

    Dad finished talking just as we reached the front door of Sailors' Bar. “Anyway, here we are. Let's go in,” he said. But understood. I put my arm around my father and said, “I'm not thirsty anymore, Dad. Let's go home.”

    The four best films in China in the first quarter of 2018

    Quite a few films both at home and abroad have brought a wave of heated discussions on the Internet in the first three months of 2018.

    If you're looking for some good films to see, here are some recommendations. While the subjects of these films are different，they all have fascinating storylines, a star-studded cast and thought-provoking themes. Let's take a look at them.

    Wonder

    Country: United States

    Release Date: Jan 19, 2018

    Genre: drama

    Starring: Julia Roberts, Owen Wilson, and Jacob Tremblay

    Director: Stephen Chbosky

    Recommendation Index: ★★★★★

    On the theme of “We all are different and want to be treated with kindness,” the film earns its tugs at the heartstrings. The movie was praised by audiences for hitting the soft spot as a heartwarming story that manages to avoid turning too sentimental.

    Forever Young

    Country: China

    Release Date: Jan 12, 2018

    Genre: drama

    Starring: Zhang Ziyi, Huang Xiaoming, Wang Leehom

    Director: Li Fangfang

    Recommendation Index: ★★★★

    The film, once planned as a tribute to mark the centenary celebrations of Tsinghua University in 2011, weaves four stories set in different eras to look at the history of the college.

    Secret Superstar

    Country: India

    Release Date: Feb 16, 2018

    Genre: musical drama

    Starring: Zaira Wasim, Aamir Khan

    Director: Advait Chandan

    Recommendation Index: ★★★★

    The film deals with social issues including feminism, gender equality and domestic violence. From Dangal to Secret Superstar to the latest comedy-drama film Bajrangi Bhaijaan, Indian films have developed a solid fan base in China.

    The Ex-File: The Return of the Exes

    Country: China

    Release Date: Dec 29, 2017

    Genre: romantic comedy

    Starring: Han Geng, Zheng Kai

    Director: Tian Yusheng

    Recommendation Index: ★★★

    The Ex-File: The Return of the Exes, the finale of the hit romance franchise produced by Huayi Brothers and New Saint Film Studio, revolves around bittersweet stories of two young businessmen who break up with their girlfriends. It is the first movie in 2018 that has achieved huge success at the box office.

    A team of engineers at Harvard University has been inspired by Nature to create the first robotic fly. The mechanical fly has become a platform for a series of new high-tech systems. Designed to do what a fly does naturally, the tiny machine is the size of a fat housefly. Its mini wings allow it to stay in the air and perform controlled flight tasks.

    “It's extremely important for us to think about this as a whole system and not just a bunch of individual components (零件),” said Robert Wood, the Harvard engineering professor who has been working on the robotic fly project for over a decade. “The added difficulty with such a project is that actually none of those components are off the shelf and so we have to make them all on our own,” he said.

    They engineered a series of systems to start and drive the robotic fly. “The seemingly simple system which just moves the wings has a number of individual components, each of which individually has to perform well, and then has to be matched well to everything it's connected to,” said Wood. The flight device was built into a set of power, computation, sensing and control systems. Wood says the success of the project proves that the flying robot with these tiny components can be built and manufactured.

    Wood says the design offers a new way to study flight mechanics and control at insect- scale. Yet, the power, sensing and computation technologies on board could have much broader applications (应用). “You can start thinking about using them to answer open scientific questions, you know, to study biology in ways that would be difficult with the animals, but using these robots instead,” he said. “So there are a lot of technologies and open interesting scientific questions that are really what drives us on a day to day basis.”

    The School has become aware that many students are being prevented from doing their work because of other students playing games and watching movies. We're sorry it's come to this, but we don't have enough resources to support everything, and our educational mission comes first.

    NO RECREATIONAL ACTIVITIES, SUCH AS GAMES AND MOVIES, ARE ALLOWED IN ANY OF THE LABS 8:30 AM TO 4:30 PM WEEKDAYS.

    Work on course-related game development is excepted. Note that it is usually very obvious whether game activity is recreational.

    MULTIPLE LOGINS AT THE SAME TIME ON THE SAME USER ACCOUNT ARE FORBIDDEN.

    If you have a course-related need for an exception to this rule, please contact the tech staff （supportatsignscs. carleton. ca）.

    For our general policy on lab usage, please see scs. carleton. ca/ labpolicy. Note that it includes:

    NO FOOD（except dry snacks and bottled drinks）

    NO PROPPING DOORS OPEN

You should try your best to create your own family library so that you and your family are always learning. "It is a great mistake to think that education is finished when young people leave school. Education is never finished even if you grow older," said Mrs Child in The Mother's Book. "Collecting a library of books in your home is really helpful to your family.”

"What is really interesting about having so many books in your home is that a book you purchase has a chapter about the deeper knowledge of your favorite subject at school," said a university graduate. Researchers in a study tries to identify what parents do has an influence on how well their children do on standardized tests. One positive aspect they find is the availability of a large number of books at home. This has a stronger connection, especially when you read to your children every day. The more books your older kids have access to at home, the more likely they are just to be reading for fun, rather than having to wait for weekly trips to the library.

John Henry, one educated parent, said, "I have been homeschooling my children using the philosophy of A Thomas Jeffer son Education. This philosophy of learning is based on the reading of classic books." Clinton Fadiman said, "When you reread a classic, you do not see more in the book than you did before; you see more in you than before." Classic books also make you smarter and wiser! The wisdom comes in the examples in the lives of the characters.

"It is within your power to guide your youth in their reading and to cultivate in their hearts a desire for good books. It is the most unfortunate if a person is not possessed with the desire for good reading. The reading habit, like charity, should begin at home," said Mrs Child.