English is one of the most difficult languages to master. Even if you might not yet sound like someone born and raised speaking the language, you should still congratulate yourself on how far you've come. Remember that practice makes perfect. So keep working at it and your skill level will certainly improve.

    Create an English environment for yourself.{#blank#}1{#/blank#}The more you hear the language, the better you'll understand how and when to use common words and phrases and how the language is pronounced.

    Practise speaking English every chance you get, whether at school, at work or speaking to family and friends. When you speak in your native language, ask yourself, “How would I say that in English?”

    Watch yourself speak English in the mirror.{#blank#}2{#/blank#}And practise changing anything you don't like. If you're uncomfortable making up things to say to yourself, just read your lessons aloud.

    Use confident body language while you speak English. Even if you're having trouble pronouncing words or remembering phrases, don't keep your head down. Speak in a natural, conversational tone(语气); keep your back and head straight, and your chin(下巴) up. If you're in a relaxed setting, put your hands behind your head and put your feet up.{#blank#}3{#/blank#}

    Find a language friend who speaks fluent English and wants to learn your language.{#blank#}4{#/blank#}Increase your confidence by knowing you have something valuable to teach, as well as something to learn.

{#blank#}5{#/blank#}Instead of saying “I'm no good at this,” say “Every day I'm getting better.”

A. Take turns teaching each other

B. Train your body into feeling in control

C. Speak confidently about your English ability

D. Learning a language requires long hours of study and practice

E. Get comfortable with the way you look speaking the language

F. Read books, watch television shows, moves and plays in English

G. Improve your confidence by teaching those worse at English than you

    Birds' feathers are some of the most strikingly variable animal characteristics that can be observed by the eyes. The patterns that we see in birds' feathers are made up of combinations of scales, bars, and spots.

    We already know why birds have colored feathers. Generally, the color of feathers may protect a bird from being noticed by the enemy in the environment, or it can make a bird more appealing to potential mates by helping them to stand out. These aspects are well known. A greater mystery has been how the patterns are created.

    Dr. Ismael Galván and his team studied the color of feathers to see what types of colors were present in birds' complex feather patterns. The study shows they mainly consist of two types of colors: melanin（黑色素）, which produce a range of black, grey, brown, and orange color, and carotenoids（类胡萝卜色素）, which are used to create brighter colors.

    Birds cannot produce carotenoids on their own. For feathers with bright colors, birds must consume food items that contain these paints, and the carotenoids circulate through the blood and to the feather. Melanin, on the other hand, is produced by special cells in the birds' bodies.

    The team found that about 32% if the species studied have complex color patterns, with the vast majority of these complex patterns produced by melanin rather than carotenoids. If the birds were artists, they would use carotenoids as a broad brush to produce color patches, with melanin as a detail paint brush to produce more complex designs.

    But a few birds are exceptions to this rule: Three bird families do have complex patterns without melanin.

    Why do some people live to be older than others? You know the standard explanations: keeping a moderate diet, engaging in regular exercise, etc. But what effect does your personality have on your longevity（长寿）? Do some kinds of personalities lead to longer lives? A new study in the Journal of the American Geriatrics Society looked at this question by examining the personality characteristics of 246 children of people who had lived to be at least 100.

    The study shows that those living the longest are more outgoing, more active and less neurotic (神经质的) than other people. Long-living women are also more likely to be sympathetic and cooperative than women with a normal life span. These findings are in agreement with what you would expect from the evolutionary theory: those who like to make friends and help others can gather enough resources to make it through tough times. Interestingly, however, other characteristics that you might consider advantageous had no impact on whether study participants were likely to live longer. Those who were more self-disciplined, for instance, were no more likely to live to be very old. Also, being open to new ideas had no relationship to long life, which might explain all those bad-tempered old people who are fixed in their ways.

    Whether you can successfully change your personality as an adult is the subject of a longstanding psychological debate. But the new paper suggests that if you want long life, you should strive to be as outgoing as possible.

    Unfortunately, another recent study shows that your mother's personality may also help determine your longevity. That study looked at nearly 28,000 Norwegian mothers and found that those moms who were more anxious, depressed and angry were more likely to feed their kids unhealthy diets. Patterns of childhood eating can be hard to break when we're adults, which may mean that kids of depressed moms end up dying younger. Personality isn't destiny, and everyone knows that individuals can learn to change. But both studies show that long life isn't just a matter of your physical health but of your mental health.

    Can We Stop Food Longing Through Imaginary Eating?

    Are you fighting an urge to reach for chocolate? Then, let it melt in your mind, not in your mouth. According to the recent research, imagining eating a specific food reduces your interest in that food, so you eat less of it.

    This reaction to repeated exposure to food—being less interested in something because you've experienced it too much—is called habituation.{#blank#}1{#/blank#}

    The research is the first to show that habituation can occur through the power of the mind. "If you just think about the food itself—how it tastes and smells—that will increase your appetite," said Carey More wedge, a well-known psychologist. "It might be better to force yourself to repeatedly think about chewing and swallowing the food in order to reduce your longing.{#blank#}2{#/blank#}Visualizing yourself eating chocolate wouldn't prevent you from eating lots of cheese," he added.

    More wedge conducted an interesting experiment. 51 subjects were divided into three groups. One group was asked to imagine putting 30 coins into a laundry machine and then eating three chocolates.{#blank#}3{#/blank#}Another group was asked to imagine putting three coins into a laundry machine and then eating 30 chocolates. Lastly, a control group imagined just putting 33 coins into the machine—with no chocolates.{#blank#}4{#/blank#}When they said they had finished, these were taken away and weighed. The results showed the group that had imagined eating 30 chocolates each ate fewer of the chocolates than the other groups.

    {#blank#}5{#/blank#}Physical signals—that full stomach feeling—are only part of what tells us we've finished a meal. The research suggests that psychological effects, such as habituation, also influence how much a person eats. It may lead to new behavioral techniques for people looking to eat more healthily, or have control over other habits.

A. What's more, this only works with the specific food you've imagined.

B. People were advised to try different methods to perform the experiment.

C. For example, a tenth bite is desired less than the first bite, according to the study.

D. All of them then ate freely from bowls containing the same amount of chocolate each.

E. It meant those who repeatedly imagined eating would concern about some specific food.

F. This requires the same motor skills as eating small chocolates from a packet, the study says.

G. This study is part of the research looking into what makes us eat more than we actually need.

    People have grown taller over the last century, with South Korean women shooting up by more than 20cm on average, and Iranian men gaining 16.5cm. A global study looked at the average height of 18-year-olds in 200 countries 1914 and 2014. The results show that while Swedes were the tallest people in the world in 1914, Dutch men have risen from l2th place to claim top spot with an average height of 182.5cm. Larvian women, meanwhile, rose from 28th place in 1914 to become the tallest in the world a century later, with an average height of 169.8cm. James Bentham, a co-author of the research says the global trend is likely but once you average over whole populations, genetics plays a less key role," he added.

    But while height has increased around the world, the trend in many countries of north and sub-Saharan Africa causes concern, says Elio Riboli of Imperial College. While height increased in Uganda and Niger during the early 20th century, the trend has reversed in recent years, with height decreasing among 18-year-olds.

    "One reason for these decreases in height is the economic situation in the 1980s," said Professor Alexander. The nutritional and health problems that followed the policy of structural adjustment, he says, led to many children and teenagers failing to reach their full potential in terms of height.

    Bentham believes the global trend of increasing height has important implications. "How tall we are now is strongly influenced by the environment we grew up in," he said. "If we give children the best possible start in life now, they will be healthier and more productive for decades to come."

    Many high school students consider a college education useless. Therefore, they choose not to go to college. If you're one of them, think again. Here are some reasons why you should go to college and receive a good education there.

    Schools and universities are the first sources of knowledge. We take that knowledge later on to build our careers after graduation. More knowledge will be gained after you start working, but without an education, that job will not be within easy reach. Knowledge leads to knowledge.

    While limited within the walls of the educational institutions, we openly explore other cultures of the world. We come to know that ours is not the only culture. Other cultures have valuable insights to share, enriching our own Education also makes us want to travel and interact with various cultures, broadening our horizons.

    When there's a downturn in the economy, those who attended college will be more likely to find a new job than those who only finished grade school and have a limited skills set. The more education you have, the more chances you will get to improve the quality of your life as you have a better job and earn a higher salary.

    When you're skillful and knowledgeable, you get to "rub knees" with people of similar backgrounds and tastes. It means a good education leads to excellent networking. Good networking can benefit you a lot in your later life.

    A good education makes you a more interesting person. You can talk about ideas and events instead of just other people and what's on sale in stores. An educated person doesn't gossip, having a preference to discuss ideas and listen to what other people have to say.