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Have you got some paper, a pair of scissors and, above all, a desire to decorate your house? Then, we have the perfect holiday artwork for you: Make Star Wars snowflakes (雪花). Remembered as a cherished form of work in classrooms before the holidays, paper snowflakes have drawn many people's attention again.

The designer, Anthony Herrera, just recently released his 2013 collection. "The Star Wars snowflake designs began as just doing designs of characters that I and my daughter wanted to make three years ago," Herrera told us in an email. "The second year I introduced vehicles, and this year I decided to push further by designing battle scenes."

Sometimes, he feels a bit bored with his job. With each year, the designs have got more detailed and various, but the process of creating them remained the same: sketching (画) figures on paper with a pencil until a symmetrical (对称）pattern comes out, then scanning the designs and cut them with scissors. However, he says he has plenty of ideas for new flakes next year, so no two will ever be the same. Hopefully with Star Wars: Episode VII coming in 2015 he'll have even more work in the future.

    Check out your favorite finished versions of Herrera's flakes (from both 2013 and previous years) and download the pictures beneath them and then get down to creating your own work. A warning: Most designs aren't for the casual flake-maker, so patience you must have.

    It is hardly surprising that clothing manufacturers (生产商)follow certain uniform standards for various features(特征)of clothes. What seems strange, however, is that the standard adopted for women is the opposite of the one for men. Take a look at the way your clothes button. Men's clothes tend to button from the right, and women's from the left. Considering most of the world's population—men and women—are right-handed, the men's standard would appear to make more sense for women. So why do women's clothes button from the left?

    History really seems to matter here. Buttons first appeared only on the clothes of the rich in the 17^th century, when rich women were dressed by servants. For the mostly right-handed servants, having women's shirts button from the left would be easier. On the other hand, having men's shirts button from the right made sense, too. Most men dressed themselves, and a sword drawn from the left with the right hand would be less likely to get caught in the shirt.

    Today women are seldom dressed by servants, but buttoning from the left is still the standard for them. Is it interesting? Actually, a standard, once set, resists change. At a time when all women's shirts buttoned from the left, it would have been risky for any single manufacturer to offer women's shirts that buttoned from the right. After all, women had grown so used to shirts which buttoned from the left and would have to develop new habits and skills to switch. Besides, some women might have found it socially awkward to appear in public wearing shirts that buttoned from the right, since anyone who noticed that would believe they were wearing men's shirts.

    No one is sure how many Americans belong to reading groups called book clubs. Yet{#blank#}1{#/blank#} (publisher) and bookstores report that more and more people throughout the United States are joining{#blank#}2{#/blank#} (they).

    Most of the clubs work the same way. Members read the same book at the same time. Then they meet to talk about the book. Members may be friends or people{#blank#}3{#/blank#} live near each other. Some Americans belong to reading groups on{#blank#}4{#/blank#}Internet. These groups include people around the world who communicate about books they read. They send electronic mails instead of gathering{#blank#}5{#/blank#} (discuss) books.

    Most reading groups study books by{#blank#}6{#/blank#} (variety) writers. However, some groups read the work of a single writer,{#blank#}7{#/blank#} (usual) one that has been famous for a while. Other groups may{#blank#}8{#/blank#} (name) for an important person in the work of the writer,{#blank#}9{#/blank#} a Sherlock Holmes Club. Members of these book clubs often are experts about their{#blank#}10{#/blank#} (choose) reading materials. One member of a Holmes reading group, for example, can identify almost every person in every Sherlock Holmes story.

    People who increased the number of times they chewed their food before swallowing ate less each meal, according to a new study.

    Slow eaters tend to be slimmer. Before the study, the researchers didn't know whether asking people to chew more would change the amount of food they ate. But they found meal sizes became smaller when adults chewed more before swallowing——whether they were slim, normal-weight, overweight or obese.

    “The study proves the benefits of taking time to chew food well,” said dietitian Brown Giggs.

    The participants were asked to eat five pizza rolls and count the number of times they chewed each roll. Researchers did not tell them what exactly was being tested in the study. 47 people went on to finish the study. 10 were slim, 10 were normal-weight, 27 were overweight. Those participants attended three weekly lunchtime test periods. Each day, researchers gave them 60 pizza rolls and told them to eat until they were full. Depending on the period, researchers asked people to chew every bite the same number of times as at their test visit, 50% more or twice as many times.

    Slim participants ate more slowly than normal-weight and overweight participants. Overall, people spent more time eating when they increased the number of times they chewed. The participants rated their appetite (食欲) the same after each meal even though slower chewing reduced how much they ate.

    Researchers noted that the study was conducted under lab conditions, so it's not clear whether it would adapt to normal life. The researchers are now looking to see whether how fast people eat, for example, influences how much they eat. “It takes about 20 minutes for the brain to signal your stomach that you're full,” Brown Riggs said.

    “Fast eaters can eat a large amount of food within that 20-minute period causing more calories, which can lead to being overweight or obesity.”

    Are you truly happy? Do you ever know what it means to be happy and what it takes to achieve happiness? {#blank#}1{#/blank#} The following are a few tips that I follow to create happiness in my life. Make a plan for achieving goals that you believe will make you happy. Your moods will very likely increase（增加） if you are going after something you value.

    Surround yourself with happy people. It is easy to begin to think negatively（消极的）. When you are surrounded by people who think that way. {#blank#}2{#/blank#}When something goes wrong, try to figure out a solution instead of being absorbed in self pity.

    Truly happy people don't allow setbacks（挫折）to affect their mood because they know that with a little thought they can turn the things back to their favor.

    {#blank#}3{#/blank#} These few minutes will give you the opportunity to focus on the positive things in your life and will lead you to continuous happiness.

    {#blank#}4{#/blank#}  Whether you treat yourself to lunch, take a long, relaxing bath or simply spend a few extra minutes on your appearance, you will be putting yourself in a better mood.

    Finding the humor in situations can also lead to happiness. Find a way to make light of a situation that would otherwise make you happy.

    Keeping healthy is another way to achieve happiness. {#blank#}5{#/blank#}

A. There are some tips in life that lead to happiness.

B. It's also important to take some time each day to do something nice for yourself

C. On the contrary, if you are around people who are happy, their emotional state will be easily passed to you.

D. Being overweight or not eating foods containing nutrition have a negative effect on your mood.

E. What makes one person happy may be very different from what makes someone else happy.

F. These are important questions for anyone who is seeking happiness to ask themselves.

G. Spend a few minutes each day thinking about the things that make you happy.

Evaluating Sources of health Information

    Making good choices about your own health requires reasonable evaluation. A key first step in bettering your evaluation ability is to look carefully at your sources of healthy information. Reasonable evaluation includes knowing where and how to fins relevant information, how to separate fact from opinions, how to recognize poor reasoning, and how to analyze information and the reliability of sources. {#blank#}1{#/blank#}

    Go to the original source. Media reports often simplify the results of medical research. Find out for yourself what a study really reported, and determine whether it was based on good science. Think about the type of study. {#blank#}2{#/blank#}

    Watch for misleading language. Some studies will find that a behaviour "contributes to" or is "associated with" an outcome; this does not mean that a certain course must lead to a certain result. {#blank#}3{#/blank#} Carefully read or listen to information in order to fully understand it.

    Use your common sense. If a report seems too good to be true, probably it is. Be especially careful of information contained in advertisements. {#blank#}4{#/blank#} Evaluate "scientific" statements carefully, and be aware of quackery (江湖骗术).

    {#blank#}5{#/blank#} Friends and family members can be a great source of ideas and inspiration, but each of us needs to find a healthy lifestyle that works for us.

    Developing the ability to evaluate reasonably and independently about the health problems will serve you well throughout your life.

A. Make choices that are right for you.

B. The goal of an ad is to sell you something.

C. Be sure to work through the critical questions.

D. And examine the findings of the original research.

E. Distinguish between research reports and public health advice.

F. Be aware that information may also be incorrectly explained by an author's point of view.

G. The following suggestions can help you sort through the health information you receive from common sources.