There are two main types of non­verbal communication. Body language is the first. Body language is body movements that depend on a person's attitude or feelings. Body language includes the way people walk，how they stand，and their facial features. In other words，any kind of meaning is shown by a person's attitude or body movements. For example，when a boy is sad he may drop his head and walk slowly. Or，if a girl is happy，she might run and jump or stand up straight and put her hands in the air. People don't have to say anything to show how they feel about things. The colour of people's skin may even show how they feel. For example，if people with light coloured skin get embarrassed，their skin may turn red，or if they are worried，they might get pale. Body language can be voluntary(主动的) or involuntary(无意识的)．An interesting fact is that blind children will smile when happy even though they have never seen a smile.

    The next main type of non­verbal communication is gestures. Gestures are communications like facial expressions，hand signals，eye gazing，and body postures. Examples include smiles，handshakes，waving，and raising certain fingers to say something. For instance，if you saw a friend at a noisy carnival，you might smile and wave at your friend. You might also point at the Ferris wheel if you wanted to meet your friend there. You could do all of these things without saying a word. Another great example is in baseball when the catcher signals to the pitcher the kind of pitch to use for the batter that is up.

How to get siblings (兄弟姐妹) to get along

    One of the greatest gifts of parenthood is seeing your children form a relationship with each other that is independent of you. By giving hem someone else to play with, you can free up some time for yourself. Here are four techniques you can use to help your children appreciate each other while they're young.

    ⒈{#blank#}1{#/blank#} The No.1 thing parents can do to help their kids stay on good terms with each other is not to compare them with each other. Never say “Your sister never. . ”or “Why can't you do what your brother does?”{#blank#}2{#/blank#}

    ⒉Try out of the way. Try not to get too involved in your kids' arguments. Learning cooperation and problem-solving is an important skill in life{#blank#}3{#/blank#}And don't blame the older one for not “knowing better,” That puts pressure on the older child and leads to unhappiness.

    ⒊Activities and opportunities. Have your kids go to their siblings' games and activities{#blank#}4{#/blank#}

    “My kids go to each other's activities, and take part in activities together,” says Patricia Walters-Fischer, mother of two. Not only do her children go, but they also offer support, encouraging each other before a big game or performance and offering comfort when things don't go well.

    ⒋Vacations. Don't ignore the value of a family vacation for bringing siblings together. When kids are away from their friends and forced to spend time together, they often enjoy each other{#blank#}5{#/blank#}In fact, a weekend camping trip offers some of the best opportunities for working together, having fun and experiencing something new.

A. Never shout at them.

B. Don't compare.

C. It doesn't need to be anything extremely great.

D. That only serves to fuel the competition.

E. Give them a project, and they will learn how to work together.

F. They may need help solving a conflict, but try not to take sides.

G. Get them involved in one another's lives, so they can have a better appreciation of who their sibling is.

    Are some people born clever, and others born stupid? Or is intelligence developed by our environment and our experience? Strangely enough, the answer to these questions is yes. To some degree our intelligence is given to us at birth, and no amount of education can make a genius out of a child born with low intelligence. On the other hand, a child who lives in a boring environment will develop his intelligence less than one who lives in rich and varied surroundings. Thus the limits of person's intelligence are fixed at birth, whether or not he reaches those limits will depend on his environment. This view, now held by most experts, can be supported in a number of ways.

    It is easy to show that intelligence is to some degree something we are born with. The closer the blood relationship between two people, the closer they are likely to be intelligent. Thus if we take two unrelated people at random from population, it is likely that their degree of intelligence will be completely different. If, on the other hand, we take two identical twins, they will very likely be as intelligent as each other. Relations like brothers and sisters, parents and children, usually have similar intelligence, and this clearly suggests that intelligence depends on birth. Imagine now that we take two identical twins and put them in different environments. We might send one, for example, to a university and the other to a factory where the work is boring. We would soon find differences in intelligence developing, and this indicates that environment as well as birth plays a part. This conclusion is also suggested by the fact that people who live in close contact with each other, but who are not related at all are likely to have similar degree of intelligence.

    Next time you make yourself a hot cup of tea or coffee, you might want to let it cool down a bit before drinking.

    Researchers say letting your hot drinks cool off could help you avoid some kinds of cancer. Researchers at the International Agency for Research on Cancer (IARC) found evidence that drinks at temperatures above 65℃, when swallowed, can cause cancer of the esophagus (食道). The researchers examined findings from other studies where tea and coffee were often served at 70℃ or above. Those studies were completed in Iran, China and South America.

    In developed countries, health experts have linked esophageal cancer to smoking and alcoholic（酒精）drinks. However, this form of cancer is more common in areas where people drink beverages（饮料；酒水）at very high temperatures.

    In Europe and the United States, many people drink coffee and tea at temperatures around 60℃.And they often add milk which lowers the temperature greatly. However, tea-drinkers in Iran and mate-drinkers in South America often enjoy their beverages at closer to 70℃.

    The researchers find that South Americans not only drink their mate very hot, they also drink it through a metal straw(吸管). This sends the scalding liquid directly into the throat.

    The findings, however, are good news for coffee drinkers. In 1991, the World Health Organization listed coffee as possibly carcinogenic (致癌的).” The WHO officials have since changed their position on that listing. They now suggest that the temperature of your hot drink is a greater risk factor than the actual drink itself.

    The results suggest that drinking very hot beverages is one probable cause of esophageal cancer and that it is the temperature, rather than the drinks themselves, that appears to be responsible.

    Can you be too beautiful? It is hardly a problem that most of us have to bother — as much as we might like to dream that it were the case.

    Yet the blessings and curses of beauty have been a long-standing interest in psychology. Do those blessed with shiny faces and an attractive body live in a cloud of appreciation — or does it sometimes pay to be ordinary?

    At the most basic level, beauty might be thought to carry a kind of halo (光环) around it; we see that someone has one good quality, and by association, our deep mind may assume that they have other good ones too.

    Even in the courts, a pleasing appearance can work its magic. Attractive criminals are likely to get less strict sentences, or to escape punishment entirely; attractive plaintiffs (原告), meanwhile, are more likely to win their case and get bigger financial settlements. “It's an effect seen everywhere,” says Walker.

    But if beauty pays in most circumstances, there are still situations where it can have opposite results. While attractive men may be considered better leaders, for instance, hidden sexist prejudices (偏见) can work against attractive women, making them less likely to be hired for high-level jobs that require power. And as you might expect, good-looking people of both sexes run into envy — one study found that if you are interviewed by someone of the same sex, they may be less likely to employ you if they judge that you are more attractive than they are.

    More worryingly, being beautiful or handsome could harm your medical care. We tend to link good looks to health, meaning that illnesses are often taken less seriously when they affect the good-looking. When treating people for pain, for instance, doctors tend to take less care over the more attractive people.

    Ultimately, scientists point out that focusing too much on your appearance can itself be harmful if it creates stress and anxiety — even for those already blessed with good looks. “If you are crazy about attractiveness, it may affect your experience and interactions,” she says. It's an outdated saying, but no amount of beauty can make up for a bad personality. As the writer Dorothy Parker put it so elegantly: “Beauty is only skin deep, but ugly goes clean to the bone.”

The Science of Risk-Seeking

    Sometimes we decide that a little unnecessary danger is worth it because when we weigh the risk and the reward, the risk seems worth taking. {#blank#}1{#/blank#} Some of us enjoy activities that would surprise and scare the rest of us. Why? Experts say it may have to do with how our brains work?

    The reason why any of us take any risks al all might have to do with early humans. Risk-takers were better at hunting, fighting, or exploring. {#blank#}2{#/blank#} As the quality of risk-taking was passed from one generation to the next, humans ended up with a sense of adventure and a tolerance for risk.

    So why aren't we all jumping out of airplanes then? Well, even 200,000 years ago, too much risk-taking could get one killed. A few daring survived, though, along with a few stay-in-the-cave types. As a result, humans developed a range of character types that still exists today. So maybe you love car racing, or maybe you hate it. {#blank#}3{#/blank#}

    No matter where you are on the risk-seeking range, scientists say that your willingness to take risks increases during your teenage years. {#blank#}4{#/blank#} To help you do that, your brain increases your hunger for new experiences. New experiences often mean taking some risks, so your brain raises your tolerance for risk as well.

    {#blank#}5{#/blank#} For the risk-seekers a part of the brain related to pleasure becomes active, while for the rest of us, a part of the brain related to fear becomes active.

As experts continue to study the science of risk-seeking, we'll continue to hit the mountains, the waves or the shallow end of the pool.

A. It all depends on your character.

B. Those are the risks you should jump to take.

C. Being better at those things meant a greater chance of survival.

D. Thus, these well-equipped people survived because they were the fittest.

E. This is when you start to move away from your family and into the bigger world.

F. However, we are not all using the same reference standard to weigh risks and rewards.

G. New brain research suggests our brains work differently when we face a nervous situation.