Baby girls make their way to dolls as soon as they can crawl, while boys will head for the toy cars,  a study has shown. The findings, the first to show consistent differences in very young babies, suggest there is a biological basis to their preferences.

    Psychologists Dr Brenda Todd from City University London carried out an experiment involving 90 babies aged nine months to 36 months. They were allowed to choose from seven toys. Some were boys' toys - a car, a digger, a ball and a blue teddy.  The rest were girls' toys: a pink teddy, a doll and a cooking set. They were placed a meter away from the toys, and could pick whichever toy they liked. Their choice and the amount of time they spent playing with each toy were recorded.

    Of the youngest children (nine to 14 months), girls spent much longer playing with the doll than boys, and boys spent much more time with the car and ball than the girls did. Among the two-and three-year-olds, girls spent 50 percent of the time playing with the doll while only two boys briefly touched it. The boys spent almost 90 percent of their time playing with cars, which the girls barely touched. There was no link between the parents' view on which toys were more appropriate for boys or girls, and the children's choice.

    Dr Brenda Todd said: “Children of this age are already exposed to much socialization. Boys may be given ‘toys that go' while girls get toys they can care for, which may help shape their preference. But these findings agree with the former idea that children show natural interests in particular kinds of toys. There could be a biological basis for their choices. Males through evolution have been adapted to prefer moving objects, probably through hunting instincts（本能）, while girls prefer warmer colors such as pink, the color of a newborn baby.”

    One early morning, I went into the living room to find my mother reading a thick book called Best Loved Poems to Read Again and Again. My interest was aroused only by the fact that the word ＂Poems＂ appeared in big, hot pink letters.

    ＂Is it good?＂ I asked her.

    ＂Yeah,＂ she answered. ＂There's one I really like and you'll like it, too.＂ I leaned forward.

    ＂‘Patty Poem,'＂ she read the title. Who is Patty? I wondered. The poem began:

    She never puts her toys away,

    Just leaves them scattered^①where they lay,…           ^①散乱的

The poem was just three short sections. The final one came quickly:

    When she grows and gathers poise^②,         ^②稳重

    I'll miss her harum-scarum^③ noise,                   ^③莽撞的

    And look in vain^④ for scattered toys.                  ^④徒劳地

And I'll be sad.

    A terrible sorrow washed over me. Whoever Patty was, she was a mean girl. Then, the shock.

    ＂It's you, honey,＂ My mother said sadly.

    To my mother, the poem revealed a parent's affection when her child grows up and leaves. To me, the ＂she＂in the poem was horror. It was my mama who would be sad. It was so terrible I burst out crying.

    ＂What's wrong?＂my mother asked.

    ＂Oh Mama,＂I cried.＂I don't want to grow up ever!＂

    She smiled.＂Honey, it's okay. You're not growing up anytime soon. And when you do, I'll still love you, okay?＂

    ＂Okay,＂I was still weeping. My panic has gone. But I could not help thinking about that silly poem. After what seemed like a safe amount of time, I read the poem again and was confused. It all fit so well together, like a puzzle. The language was simple, so simple I could plainly understand its meaning, yet it was still beautiful. I was now fascinated by the idea of poetry, words that had the power to make or break a person's world.

    I have since fallen in love with other poems, but ＂Patty Poem＂ remains my poem. After all, ＂Patty Poem＂ gave me my love for poetry not because it was the poem that lifted my spirits, but because it was the one that hurt me the most.

    All too often, a choice that seems sustainable(可持续的)turns out on closer examination to be problematic. Probably the best example is the rush to produce ethanol(乙醇) for fuel from corn. Corn is a renewable resource —you can harvest it and grow more, almost limitlessly. So replacing gas with corn ethanol seems like a great idea. 

    One might get a bit more energy out of the ethanol than that used to make it, which could still make ethanol more sustainable than gas generally, but that's not the end of the problem. Using corn to make ethanol means less corn is left to feed animals and people, which drives up the cost of food. That result leads to turning the fallow land –including, in some cases, rain forest in places such as Brazil—into farmland, which in turn gives off lots of carbon dioxide (CO) into the air. Finally, over many years, the energy benefit from burning ethanol would make up for the forest loss. But by then, climate change would have progressed so far that it might not help.

    You cannot really declare any practice “sustainable” until you have done a complete life-cycle analysis of its environmental(环境的) costs. Even then, technology and public keep developing, and that development can lead to unforeseen and undesired results. The admirable goal of living sustainably requires plenty of thought on an ongoing basis.

    It was not yet eleven o'clock when a boat crossed the river with a single passenger who was lucky to be able to cross the river at that unusual hour by promising to pay some extra money. While the youth stood in the light place searching his pockets for money, the boatman lifted a lamp, with the help of which, together with the newly risen moon, he took a careful look at the stranger. He was a young man of about eighteen years, clearly country brought up, and was, as it seemed, on his first visit to town. He was wearing a rough grey coat, which was in good shape, and which had seen many winters before this one. The jacket under his coat was made of leather and trousers fitted tightly to a pair of strong legs; his stockings of blue yarn(毛绒) must have been the work of a mother or sister, and on his head was a hat, which in its better days had perhaps protected the grayer head of the young man's father. In his left hand was a walking stick, and on his strong shoulders hung a leather bag. Brown hair, well-shaped features, bright, cheerful eyes were nature's gifts. The youth, whose name was Robin, paid the boatman, and then walked forward into the town with a light step, as if he had not already traveled more than thirty miles that day. As he walked, he looked around as eagerly as if he were entering London or New York instead of the little city in New England.

    Some people might dream of splendid surroundings—but also need a reasonably affordable cost of living. Try one of these four astonishing spots for a magical retirement, from an International living.com report, where retirees can live well on less.

    Sintra, Portugal

    A favorite summer retreat of former royalty, which is just a 40-minute train ride from Lisbon, is the pastel-painted Palace of Pena, a 19th-century Romanticist marvel with pink turrets and daffodil-yellow tower on a hill surrounded by pine forests. A couple could live well in this arts-rich tourist town, though pricier than other cities in Portugal, on a budget of $ 3,065 a month.

    Cusco, Peru

    Cusco, Peru's most historic city, is a UNESCO World Heritage site. Once an Incan capital. Cusco has clear, sunny days. Colonial structures have been changed into fashionable restaurants, shops and even homes. Superfoods, like chia seeds, quinoa and maca, are inexpensive and plentiful. A retired couple could enjoy a good life on$ 1,700 a month.

    The West Coast, Ireland

    The Wild Atlantic Way is a cycling or driving route that stretches across the west coast of Ireland. At the heart of the route is one of the most amazing natural wonders, the landmark Cliffs of Moher in County Clare—one of Ireland's most visited natural attractions. On a budget of around $ 2, 800 a month, a retired couple could live quite comfortably.

    San Miguel de Allende, Mexico

    San Miguel was declared a UNESCO World Heritage City in 2008.The colonial centro has much to offer retirees: low cost of living, arts, charming local cultural traditions and mild weather year-round. San Miguel is a few hours' drive from Mexico City. The days are comfortably warm and the nights blessedly cool. A retired couple could live comfortably on a monthly budget of $ l, 650.

    A large body of research has been developed in recent years to explain many aspects of willpower. Most of the researchers exploring self-control do so with an obvious goal in mind: How can willpower be strengthened? If willpower is truly a limited resource, as the research suggests, what can be done to make it stay strong?

    Avoiding temptation (诱惑) is an effective method for maintaining self-control, which is called the "out of sight, out of mind" principle. One recent study, for instance, found office workers less attracted to candy in the desk drawer than that on top of their desks, in plain sight.

    The research suggesting that we possess a limited reservoir of self-control raises a troubling question. When we face too many temptations, are we to fail? Not necessarily. Researchers don't believe that one's willpower is ever completely exhausted. Rather, people appear to hold some willpower in reserve, saved for future demands. The right motivation allows us to tap into those reserves, allowing us to carry on even when our self-control strength has been run down. High motivation might help overcome weakened willpower-at least to a point.

    Willpower may also be made less vulnerable (脆弱) to being exhausted in the first place. Researchers who study self-control often describe it as being like a muscle that gets tired with heavy use. But there is another aspect to the muscle comparison, they say. While muscles become exhausted by exercise in the short term, they are strengthened by regular exercise in the long term. Similarly, regular practices of self-control may improve willpower strength.

    The evidence from willpower-exhaustion studies also suggests that making a list of resolutions on New Year's Eve is the worst possible approach. Being exhausted in one area can reduce willpower in other areas, so it makes more sense to focus on a single goal at a time. In other words, don't try to quit smoking, adopt a healthy diet and start a new exercise plan at the same time. Taking goals one by one is a better approach. Once a good habit is in place, Baumeister says, you'll no longer need to draw on your willpower to maintain the behavior. Eventually healthy habits will become routine, and won't require making decisions at all.