In 1975, George Carlin appeared on a popular TV show, Saturday Night Live, with his famous words about blue food. “Why is there no blue food? I can't find blue food—I can't find the flavor of blue! I mean yellow is lemon; orange is orange and red is cherry. Where is the blue food?”

    Well, Carlin pretty much has it right—there is not no blue food, but there's certainly not a lot of it. Fresh-picked blueberries are blue, though they become purple when they are turned into jam. The blue in blueberries—like the purple in grapes and red in tomatoes—is found in nature. But it isn't a hot color for food. People don't seem to prefer blue food. Some diet programs even suggest that those determined to lose weight should make their food blue.

    Eating, in part, begins with our eyes. Chares Spence—an experimental psychologist from Oxford University—points out that color can change our taste experience. Commonly, we consider red-colored foods up to 20% sweeter than they actually are; and green foods as being more sour. Spence suggests: human expectations may be influenced by our long history of watching—green fruits can become sweet as they grow up and turn red.

    But what about blue? Except blueberries, much of the blue food we see these days is dyed blue artificially. Food producers argue that artificial color doesn't do much damage to health. A lot of research shows that some physical problems of kids are related to food dyes—while other studies show no effects at all. Blue birthday cake or even blue-dyed chicken can be served on the dinner table. So what?

    After suffering through many months of unemployment  (失业). my wife and I moved this week from Colorado to Ohio. where she was starting a new job. Not knowing anybody there. we were pretty concerned about how we'd get our entire home unloaded (卸下) without killing ourselves.

    We made a phone call to hire (临时雇用) a couple of college students to help with all the heavy lifting once we got there. But one neighbor after another stopped by to help us. What ? Have we moved to some other country ? Maybe we've died and gone to heaven!     

    Unloading actually became fun and joy because there were so many wonderful new friends to help when we worked. The more people helped. the easier the work became. We were afraid the job might take days for the two of us alone. but it was finished in a few hours. Many total strangers would either walk by the sidewalk or drive by to ask us if we were moving in. Many were happy that this old house that had sat empty for so long was coming to life again. We were invited to an outdoor meal yesterday by neighbors on the same street.

    All the time. my brain was resting on this new sense of hope that people can be so friendly to strangers. Among all the conversation were lots of offers to help each other in all kinds of ways. It's wonderful to live in such a kind little town. I feel so grateful to be here. and wish the rest of the world could see how an entire community can model  (做榜样) what it's like to help each other.

    Both men and women are living longer these days in industrialized countries. {#blank#}1{#/blank#} In general, they can expect to live six or seven years more than men. One reason for this is biological.

    One important biological factor(因素) that helps women live longer is the difference in hormones between men and women. {#blank#}2{#/blank#} Between the ages of about 12 and 50, women produce hormones that are involved in fertility(生育能力). These hormones also have a positive effect on the heart and the blood flow. In fact, women are less likely to have high blood pressure or to die from heart attacks.

    {#blank#}3{#/blank#} They help the body defend itself against some kinds of infections. This means that women generally get sick less often and less seriously than men. The common cold is a good example: women, on average, get fewer colds than men.

    {#blank#}4{#/blank#} Scientists are still not exactly sure how genes influence aging, but they believe they do. Some think that a woman's body cells have a tendency(倾向) to age more slowly than a man's. Others think that a man' s body cells have a tendency to age more quickly. {#blank#}5{#/blank#}

A. However, women, on average, live longer.

B. The biological factor plays an important part.

C. Women are also helped by their female genes.

D. The female hormones also protect the body in another way.

E. Recent research seems to support both of these possibilities.

F. Therefore, women are more healthy than men and can live a better life.

G. Hormones are chemicals which are produced by the body to control various body functions.

    There is much to see Australia that you can't see easily in its natural setting anywhere else. A visit to Australia would not be complete without taking the chance to see some of these animals in their natural environment.

Bandicoot

    There are several species of Bandicoot around Australia, and although occasionally they can be seen during the day, they are generally nocturnal. Bandicoots are small creatures only about the size of a rat and eat small insects and plants. Several of the Bandicoots around Australia include the Eastern Barred Bandicoot, which is now rare around Australia and the Southern Brown Bandicoot found in eastern and western parts of Australia.

Koala

    Koalas are small bears like creatures that live along the east coast of Australia, with their habitat amongst the famous Eucalyptus trees. However, koalas only like to eat a small percentage of the Eucalyptus trees found around Australia. Koalas have hard black noses, with sharp claws and a thick furry coat and can grow to a weight of about 10kg, most of their time is spent asleep in the trees, which is the best place to see a koala.

Dingo

    Dingoes are found in various areas across Australia, and unlike domestic dogs do not bark. Instead, the Dingo makes a howling sound that is very particular. Dingoes generally eat mice, rabbits and rats, although sometimes they can also attack livestock(家畜) when hungry.

Frilled Lizard

    The Frilled Lizard is found in the eastern and northern parts of Australia, living within the bush. The Frilled Lizard frill normally hangs around its neck, and is made out of a flap of skin. When threatened, the Frilled Lizard will raise its frill making it seen more dangerous.

    Have you ever noticed how Americans fill up their entire glass with ice and then pour their beverage(饮品) in, but Europeans take their drinks at room temperature? In the U. S., we've created fridges that give you cold ice at the press of a button, but in Britain they typically serve their tap water warm.

    This tradition—if that's what you want to call it-dates back to the 19th century. During that time, it was already commonplace for most American homes to have an ice box. Ice would be harvested in northern America or Canada and shipped across the Atlantic and sold at a high price in British department stores. Can you imagine heading to Macy's to treat yourself to a block of ice?

    Putting ice in your drink started to become somewhat of a fashion(时尚) trend for the wealthy in Britain. Some would put a few cubes in their champagne and sip on their chilled drinks at high-class parties. But, like with any fashion trend, it eventually faded, mainly because the ice was just too expensive. And even once ice boxes began appearing in homes in Britain as well, Brits never took a liking to ice in their drinks.

    So, next time you travel overseas, don't feel offended(冒犯) when your server gives you an eye roll when you ask for ice water.

    A study showed that the experiences children have in their first few years are important. These experiences affect the development of the brain. When children receive more attention, they often have higher IQs. Babies receive information when they see, hear and feel things, which makes connections between different parts of the brain. There are a hundred trillion(万亿)connections in the brain of a three-year-old child.

    Researcher Judit Gervain tested how good newborns are at distinguishing different sound patterns. Her researchers produced images of the brains of babies as they heard different sound patterns. For example, one order was mu-ba-ba. This is the pattern"A-B-B". Another order was mu-ba-ge. This is the pattern “A-B-C”. The images showed that the part of the brain responsible for speech was more active during the" A-B-B" pattern. This shows that babies can tell the difference between different patterns. They also were sensitive to where it occurred in the order.

    Gervain is excited by these findings because the order of sounds is the building block of words and grammar." Position is key to language," she says. "If something is at the beginning or at the end, it makes a big difference: John caught the bear.' is very different from 'The bear caught John.'”

    Researchers led by scientist Patricia Kuhl have found that language delivered by televisions, audio books, the Internet, or smartphones－no matter how educational－doesn't appear to be enough for children's brain development. They carried out a study of nine-month-old American babies. They expected the first group who'd watched videos in Chinese to show the same kind of learning as the second group who were brought face-to-face with the same sounds. Instead they found a huge difference. The babies in the second group were able to distinguish between similar Chinese sounds as well as native listeners. But the other babies－regardless of whether they had watched the video or listened to the audio－learned nothing.