Why is pink or purple a color for girls and blue or brown for boys?

    The answer depends largely on cultural values as well as personal experiences. To the Egyptians, green was a color that represented the hope and joy of spring, while for Muslims, it means heaven. Red is a symbol of good luck in many cultures. In China, children are given money in a red envelope to bring good fortune in the New Year. For many nations, blue is a symbol of protection and religious beliefs. Greek people often wear a blue necklace hoping to protect themselves against evils(灾祸).

    People's choice of colors is also influenced by their bodies' reactions toward them. Green is said to be the most restful color. It has the ability to reduce pain and relax people both mentally and physically. People who work in green environments have been found to have fewer stomachaches.

    Red can cause a person's blood pressure to rise and increase people's appetites(食欲). Many decorators will include different shades of red in the restaurant. Similarly, many commercial websites will have a red “Buy Now” button because red is a color that easily catches a person's eye.

    Blue is another calming color. Unlike red, blue can cause people to lose appetite. So if you want to eat less, some suggest that eating from blue plates can help.

    The next time you are deciding on what to wear or what color to decorate your room, think about the color carefully.

    World-famous scientist Stephen Hawking has died at the age of 76. He was often called the most brilliant theoretical physicist since Albert Einstein. But his amazing career actually started as a young man who struggled to get around to doing his homework at Oxford University where he studied physics. He then went on to Cambridge to research cosmology, the study of the origin of universe.

    When he was 21, Hawking's life hit a big hurdle. He was diagnosed with Motor Neurone Disease. The disease causes the brain to stop sending messages to a person's muscles. At the time, doctors said he would only live for around 2 years, but he proved them very, very wrong.

    And with the help of a special wheelchair and speech computer, Hawking spent much of his time researching the beginning of the universe and black holes. His most famous discovery was probably when he demonstrated that black holes emit some radiation, which has since become known as Hawking Radiation. He also spent a lot of time thinking about what existed before the big bang.

    Hawking wrote books that explained his big ideas in ways that could be understood by the average person. In 1988 he published A Brief History of Time. It became really popular and sold more than 10 million copies. However, he wasn't just known for his books. He also had a lot of fun becoming a regular on TV screens around the world. He even had a big Hollywood film made about his life.

    Throughout his life Stephen Hawking inspired people to look beyond our planet and expand our knowledge of the universe. His family says that he'll be greatly missed and the legacy of his amazing ideas will live on.

    Self­control is the ability to regulate and adjust responses in order to avoid undesirable behaviors, increase desirable ones, and achieve long­term goals. Common goals such as losing weight, exercising regularly, eating healthy food, giving up bad habits, and saving money are just a few worthwhile ambitions that people believe require self­control.

    One 2011 survey conducted by the American Psychological Association found that 27 percent of subjects identified a lack of willpower as the primary factor keeping them from reaching their goals. Researchers have found that people who have better self­control tend to be healthier and happier. In one experiment, students who exhibited greater self­control had better grades and higher test scores, and were more likely to be admitted to a competitive academic program. The study also found that when it came to academic success, self­control was a more important factor than IQ scores.

    The psychologist Walter Mischel conducted famous experiments in 1975 that were related to delayed gratification. In these experiments, children were offered a choice: they could choose to eat one treat right away, usually a cookie or a candy or they could wait for a brief period of time in order to get two treats. At this point, the researcher would leave the child alone in a room with a single treat. Not surprisingly, many of the kids chose to eat the single treat the moment the experimenters left the room. However, some of the kids were able to wait for the second treat.

    Based on his research, Mischel proposed what he  referred to as a "hot­and­cool" system to explain the ability to delay gratification. The hot system refers to the part of our willpower that is emotional and impulsive ( 冲动的) and urges us to act upon our desires. The cool system is the part of our willpower that is rational ( 理性的) and thoughtful, and enables us to consider the consequences of our actions in order to resist our impulses.

    Self­control is an important skill that allows us to regulate behavior in order to achieve our long­term goals. Research has shown that self­control is not only important for goal attainment, and people with greater willpower also tend to do better on all sides.

    My topic today is the Internet. It was prompted(引出)by the first letter, which I am unable to answer fully for the reasons given!

    Dear David, I am a middle school student. Now I am preparing for a writing competition. Could you please check the mistakes in my article about using the Internet and give me some advice? Thank you.

    No name

    David writes: I am very sorry to say that I think it would be very unfair for me to help you win a competition — unfair to the other competitors!

    But I will say that your article is very interesting and I wish you good luck. Your article makes some good points that deserve talking about in this column!

    Dear David,

    I'm now learning English by myself. Can you introduce some useful websites where I can make friends with foreigners? Please help me.

    Moonlight

    David writes: Well, dear moonlight, I bet you made a good choice by using the Net in your self-studies. Two very good websites I would suggest to you are: www.britishcouncil.org.cn and www.britishcouncil.org /learnenglish.

    By the way, for those readers interested in the teaching of English, there is an Internet discussion group called ELTCSChi-L (English Language Teaching Contacts Scheme China List).And also, a healthy warning to all my readers: If over-used, the Internet can be a WOMBAT-A Waste of Money, Brains and Time!

    In many developed countries, people who have high degrees begin to work longer than those who don't. About 65% of American men aged 62－74 with a professional degree are in the workforce (劳动人口), compared with 32% of men who only finish high school. This gap is part of a deepening divide between the well-educated wealthy and the unskilled poor. Rapid technological advance has raised the incomes of the highly skilled while squeezing those of the unskilled. The consequences, for individuals and society, are profound (意义深远的).

    The world is facing an astonishing rise in the number of old people, and they will live longer than ever before. Over the next 20 years the global population of those aged 65 or more will almost double, from 600 million to 1.1 billion. The experience of the 20th century, when greater longevity (长寿) translated into more years in retirement rather than more years at work, has persuaded many observers that this shift (变化) will lead to slower economic growth, while the swelling (渐增的) ranks of pensioners will create government budget problems.

    Policies are partly responsible. Many European governments have abandoned policies that used to encourage people to retire early. Even the better-off must work longer to have a comfortable retirement. But the changing nature of work also plays a big role. Pay has risen sharply for the highly educated, and those people continue to reap (获得) rich rewards into old age because these days the educated elderly are more productive than the preceding (先前的) generation. Technological change may well reinforce (强化) that shift: the skills that complement (补充) computers, from management know-how to creativity, do not necessarily decline with age.

A donation letter is what you write to a person you expect, who will give away some of his money to support your good cause. Good as the cause may be, it is hard to make a person part with his hard-earned money. It takes some really great writing skills to write such a letter.

The donation letter for charity isn't exactly a formal letter for business communication. You need to take a casual tone. Make sure that you know the name of the recipient (收信人) to sound more like a friendly gesture. The language too should not be extremely serious and should be slightly informal, which can make your recipient willing to believe you.

Make sure that you include all the details regarding your program, your funds required, and your plan in the letter. The most important thing is to mention how someone stands to benefit because of the recipient's contribution. Talk about how many lives your charity fund has been able to change and how many more you wish to change further. This may touch the reader and talk him into making a donation towards your cause. Include the amount which you expect the recipient to donate, within your letter.

A typical donation letter is often divided into four paragraphs. The first paragraph will be an introduction to your organization, like what you do, how long you have been running, and your achievements. The second paragraph will give more details regarding your current goals that you're trying to reach. In the third paragraph you use a more direct method here, asking politely for any help. Keep it short and clear. The final paragraph is your conclusion, where you tell exactly how the help received would be put into good use. Add a "thank you" for any and all help received.