“A room without books is like a body without a soul,” observed the Roman philosopher, Cicero. It can also be a sign of financial problems to come. New research has uncovered a strong connection between the earning of adults and whether they grew up surrounded by books as children.

    Three economists at the University of Padua—Giorgio Brunello, Guglielmo Weber and Christoph Weiss—studied 6000 men born in nine European countries and concluded that children with access to books could expect to earn more money than those who grew up with few or no books.

    They studied the period from 1920 to 1956, when school reforms saw the minimum school leaving age raised across Europe. They booked at whether, at the age of 10, a child lived in a house with fewer than 10 books, a shelf of books, a bookcase with up to 100 books, two bookcases, or more than two bookcases.

    Over the period studied, the research, published in The Economic Journal, found that an additional year of education increased a man's average lifetime earnings by 9%. Men brought up in houses with less than a shelf of books earned only 5% more as a result of the extra year's education, compared with 21% more for those who had access to a lot of books. And those who had access to books were more likely to move to the better-earning opportunities in cities than those without books. The men's first job was also much more likely to be a white-collar job.

    The economists offer a number of theories for the results. “Perhaps books matter because they encourage children to read more and reading can have positive effects on school performance,” they said.

    The number of books in children's homes can effectively predict their cognitive(认知的) test scores. This may indicate a home that encourages cognitive skills, which are important for economic success in life.

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    Looking for a great summer read? Kid reporters from Time For Kids have reviewed the season's hottest new books. They have recommended a list of kid-approved page-turners (令人爱不释手的书) to our readers. Whether you're fond of mysterious, fantastic or realistic fictions, there's always one that suits you.

    Three Bird Summer

    By Sara St. Antoine

    Genre: Realistic Fiction

    Number of pages: 256

    What's the basic story line?

    For his entire life, 12-year-old Adam has spent summers at his grandma's cabin in Minnesota. But this year things are different. His parents have divorced. Apart from that, Adam's cousins won't be vacationing at the cabin with him. Also, Grandma seems to be acting differently. At first, she's just a bit more forgetful than usual. But after spending more time with her, Adam realizes Grandma is “slipping.”

    There are new neighbors at the cabin this summer, including a girl at Adam's age named Alice. At first, Adam isn't interested in spending time with her. But as time goes by, their friendship flourishes(繁荣). Throughout this unusual summer, Adam searches for hidden treasure with his new friend and begins to uncover family secrets as well.

    Are the characters believable?

    The characters are believable because they don't have cookie-cutter(千篇一律的) personalities. Adam is quiet and shy and finds girls difficult to understand. Alice is adventurous and unlike any girl he has ever met. Readers will likely see aspects of their personalities in the characters and recognize their friendship too.

    Who would like this book?

    Anyone who appreciates memories of family vacations or summertime in general will enjoy the vivid imagination that fills ThreeBirdSummer. Readers will fall into the story, almost as if they're actually spending the summer exploring Three Bird Lake with Adam and Alice.

    Any foreigner who has tried to learn Chinese can tell how hard it is to master the tones required to speak and understand. And anyone who has tried to learn to play the violin or other instruments can report similar challenges.

    Now researchers have found that people with musical training have an easier time learning Chinese. Writing in the online edition of Nature Neuroscience，researchers from Northwestern University say that both skills draw on the same parts of the brain that help people discover changes in pitch(音调).

    One of the study's authors，Nina Kraus，said the findings suggested that studying music "actually tunes our sensory system" .This means that schools that want children to do well in languages should hesitate before cutting music programs，Dr. Kraus said. She said music training might also help children with language problems.

    Mandarin(普通话)speakers have been shown to have a more complex encoding(编码) of pitch patterns in their brains than English speakers do. This is because in Mandarin and other Asian languages，pitch plays a central role. A single­syllable word can have several meanings depending on how it is intoned.

    For this study，the researchers looked at 20 non­Chinese speaking volunteers，half with no musical background and half who have studied an instrument for at least six years.

    As they were shown a movie，the volunteers also heard an audio tape of the Mandarin word “mi” in three of its meanings: squint，bewilder and rice. The researchers recorded activities in their brain stems to see how well they were processing the sounds. Those with a music background showed much more brain activities in response to the Chinese sounds.

    The lead author of the study，Patrick C.M. Wong，said it might work both ways. It appears that native speakers of tonal languages may do better at learning instruments.

    Here are some professions Americans consider to be the most honest. Maybe the rest of us can learn from what these people do to establish good relationships with others.

    MEDICAL DOCTORS

    Jack Jacob, Age: 44, Fountain Valley, California

    I try to introduce myself in a pleasant way. I sit down. I don't stand. I make good eye contact with the patient and his or her family. Communication skills are key, as well as showing understanding and availability. For a physician, the most rewarding thing is when someone who has seen your work chooses you.

    ENGINEERS

    Chrissy Keane, Age: 41, Crofton, Maryland

    I don't know that being an engineer means you are automatically trustworthy. However, I do think that most engineers like to follow rules and be organized. They tell you what they think, whether you want to hear it or not. Those are important elements in building trust.

    POLICE OFFICERS

    G. M. Cox, Age: 64, Fort Worth, Texas

    As a police officer, I have the best interests of the people I serve in my heart and in my actions and I'm going to treat everyone the same way. I always want to go up to people and speak to them with respect. Don't talk down to them. You have to establish and maintain that trust. Be equal!

    Alice Moore is a teenager entrepreneur(创业者), who in May 2015 set up her business AilieCandy. By the time she was 13, her company was worth millions of dollars with the invention of a super-sweet treat that could save kids' teeth, instead of destroying them.

    It all began when Moore visited a bank with her dad. On the outing, she was offered a candy bar. However, her dad reminded her that sugary treats were bad for her teeth. But Moore was sick of missing out on candies. So she desired to get round the warning, "Why can't I make a healthy candy that's good for my teeth so that my parents can't say no to it?" With that in mind, Moore asked her dad if she could start her own candy company. He recommended that she do some research and talk to dentists about what a healthier candy would contain.

    With her dad's permission, she spent the next two years researching online and conducting trials to get a recipe that was both tasty and tooth-friendly. She also approached dentists to learn more about teeth cleaning. Consequently, she succeeded in making a kind of candy only using natural sweeteners, which can reduce oral bacteria.

    Moore then used her savings to get her business off the ground. Afterwards, she and her father secured their first business meeting with a supermarket owner, who finally agreed to sell Moore's product—CanCandy.

    As CanCandy's success grows, so does Moore's credibility as a young entrepreneur. Moore is enthusiastic about the candy she created, and she's also positive about what the future might bring. She hopes that every kid can have a clean mouth and a broad smile.

    Meanwhile, with her parents' help, Moore is generally able to live a normal teenage life. Although she founded her company early on in life, she wasn't driven primarily by profit. Moore wants to use her unique talent to help others find their smiles. She donates 10% of AilicCandy's profits to Big Smiles. With her talent and determination, it appears that the sky could be the limit for Alice Moore.

An international team of astronomers used a database combining observations from the best telescopes in the world {#blank#}1{#/blank#} (detect) the signal from the active supermassive black holes of dying galaxies（星系） in the early universe. The {#blank#}2{#/blank#} (appear) of these active supermassive black holes is related to changes in the host galaxy. This means a black hole could have far reaching effects {#blank#}3{#/blank#} the evolution of its host galaxy.

The Milky Way Galaxy {#blank#}4{#/blank#} we live includes stars of various ages, including stars still forming. But in some other galaxies,{#blank#}5{#/blank#} (know) as elliptical（椭圆的） galaxies, all of the stars are old and about the same age. This indicates that early in {#blank#}6{#/blank#} (they) histories elliptical galaxies had a period of rich star formation that suddenly ended. Why this star formation stopped in some galaxies {#blank#}7{#/blank#} not others is not well understood. One possibility is that a supermassive black hole disrupts（瓦解） the gas in some galaxies,{#blank#}8{#/blank#} (create) an environment unsuitable for star formation.

To test this theory, astronomers look at distant galaxies. Due to the limited speed of light, it takes time for light to travel across the void of space. The light we saw last night from an object 10 billion light years away {#blank#}9{#/blank#} (travel) for 10 billion years to reach Earth. Thus the light we see today shows us what the galaxy looked like when the light left that galaxy 10 billion years ago. So looking at distant galaxies is like looking back in time. But the longer distance also means that distant galaxies look {#blank#}10{#/blank#} (small), making study more difficult.