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    Anyone who has ever tried to stop smoking knows how difficult it is to quit. There is no lack of information about how unhealthy smoking is for you- not to mention the unpleasant smell. So why would teens ever begin to smoke?

    {#blank#}1{#/blank#} Research shows that the majority of smokers lit up their first cigarette in their early or mid-teens, precisely at a time when children are beginning to establish their own identity apart from their parents. Smoking can be an act of rebellion(反抗) against parents or authority figures, as well as a way to fit in with others and feel accepted.

    Here are some things that parents can do to help a child stay smoke-free.

    Start talking to your teen about how bad smoking is for him early, well before his teens. Keep talking, too. {#blank#}2{#/blank#}

    {#blank#}3{#/blank#} For example, smoking makes your hair and clothing smell bad, stains the teeth, and reduces your lung power to play sports.

    {#blank#}4{#/blank#} Talk about the addictive power of smoking and tell him while those few cigarettes are his choice, the addiction that occurs shortly afterwards makes him powerless to decide whether or not he wants to light up.

    Work on self-esteem(自尊) and self-confident with your teen. Much of the attraction of smoking is to gain acceptance. {#blank#}5{#/blank#}

    In all our lives we must make choices. You make choices from the time you get out of bed in the morning until you go to sleep at night. What time to get up? What to wear? What to eat? You also make more significant choices when you graduate from high school.{#blank#}1{#/blank#} College? Technical training?

    No matter the size of the decision, the common thread in all of them is that they involve an opportunity cost. Opportunity cost is your next best alternative – your second choice. For example, it's a Saturday night, and you are trying to decide between going to the movies, hanging out at friend's house or going to the football game.{#blank#}2{#/blank#}What is your second choice? If it is the football game, then that is your opportunity cost.

    Opportunity cost is important. When you make a certain choice, it forces you to think more critically about all of the abandoned choices. By recognizing opportunity cost, you can decide whether your decision is worth it.

    {#blank#}3{#/blank#}As a high school senior, you face several options, including going to college, going to technical school, or going to the work force. If you choose college the opportunity cost is losing what could have been purchased or saved with the money spent on tuition (学费), housing, books, etc. for four years.{#blank#}4{#/blank#}You would also lose four years' worth of income and experience that you could have earned if you had gone straight to work.

    However, it is still the case that college graduates earn more than high school graduates.{#blank#}5{#/blank#}But, like all decisions, it is one that should be arrived at only after looking at the costs — including the opportunity cost — and considering the follow-up question: is it worth it?

A. Will you go straight to work?

B. What causes opportunity cost?

C. But that's not the end of the costs.

D. Suppose you decide to go to the movies.

E. If you give up college, what do you lose?

F. A perfect example is the decision to go to college.

G. For many students, going on to college is a wise decision.

    Before there was the written word, there was the language of dance. Dance expresses love and hate, joy and sorrow, life and death, and everything else in between.

    {#blank#}1{#/blank#}We dance from Florida to Alaska, from north to south and sea to sea. We dance at weddings, birthdays, office parties and just to fill the time.

    "I adore dancing," says Lester Bridges, the owner of a dance studio in Iowa. "I can't imagine doing anything else with my life." Bridges runs dance classes for all ages. "Teaching dance is wonderful. {#blank#}2{#/blank#}It's great to watch them. For many of them, it's a way of meeting people and having a social life."

    {#blank#}3{#/blank#}"I can tell you about one young couple," says Bridges. "They're learning to do traditional dances. They arrive at the class in low spirits and they leave with a smile. {#blank#}4{#/blank#}"

    So, do we dance in order to make ourselves feel better, calmer, healthier? Andrea Hillier says, "Dance, like the pattern of a beating heart, is life. Even after all these years, I want to get better and better.{#blank#}5{#/blank#} I find it hard to stop! Dancing reminds me I'm alive."

    Perhaps you have heard the expression “When in Rome, do as the Romans do”. So when you want to do business in France, you have to get to know French culture, make marketing plans, and run your business by local laws.

    {#blank#}1{#/blank#} The French take great pride in their language, so anyone who does not speak it may run the risk of being disrespected by his French colleagues or business partners. Also, another reason why learning French is important is that it is a great way to show every possible French business partner that you care and respect their country's culture and language.

    The first thing that you should do when meeting someone new is to shake his hand firmly and always look at the person in the eye. In social meetings with friends, kissing is common.

    Use first names only after being invited to.{#blank#}2{#/blank#}The French will sometimes introduce themselves using their surname first, followed by their first name.

    Dress well.{#blank#}3{#/blank#} Your business clothing is a reflection of your success and social status. Always try to be tasteful and stylish. Women are advised to dress simply but elegantly. Wearing make-up is practiced widely by businesswomen.

    The French are passionate about food, so lunches are common in doing business in France, which usually consist of an appetizer, main meal with wine, cheese, dessert and coffee, and normally take up to two hours.{#blank#}4{#/blank#}

    Do not begin eating until the host says “bon appetite”. Pass dishes to the left, keep wrists above the table and try to eat everything on the plate.{#blank#}5{#/blank#}This may suggest that you find the food tasteless. If eating in a restaurant with the person who invites always pays.

A. Remember to be as polite as possible.

B. This is a time for relationship building.

C. Use Monsieur or Madame before the surname.

D. Be careful with adding salt, pepper or sauces to your food.

E. Make an appointment with your business partner in advance.

F. The French draw information about people based on their appearance.

G. Language should be the focus of anyone planning to do business in France.

    China has been the birthplace of many of the world's greatest inventions. It was, for example, the first country to produce paper money. Before the invention of paper money and coins, people used many different kinds of things for buying and selling. {#blank#}1{#/blank#} This exchange of goods and services for other goods and services is called bartering（物物交换）.

    {#blank#}2{#/blank#} In 1200 BC, people in China began to use shells as money. Usually the shells used as money were very small. This made it easier for people to carry money over long distances, and allowed for trade to develop between different parts of the country.

    In the years which followed this invention, many other countries around the world began to do the same. {#blank#}3{#/blank#}

    The next development was in 1000 BC, when China started making bronze and copper shells. It wasn't long before the Chinese made round coins out of metal. {#blank#}4{#/blank#} By 500 BC, metal coins had begun to appear in countries like Persia and Greece, and later in the Roman Empire.

    About 1000 years later, leather was used as money in China, and in 806 AD, the first paper banknotes were produced by the Chinese people. {#blank#}5{#/blank#}

A. As time went by, trade between countries increased.

B. People also began collecting foreign coins as souvenirs.

C. They also used tiny shells as money for buying and selling.

D. It was still many years before paper money appeared in Europe.

E. However, as economies developed, such exchanges became impractical.

F. During that time, for example, buying a chicken might cost several potatoes.

G. The very first coins often had holes in them so that people could tie them together.

One of the healthiest Foods on the planet

    There is probably no flower more hated, or misunderstood, than the bright yellow dandelion (蒲公英). {#blank#}1{#/blank#} In an effort to have the perfect green grass lawn, people try their best to kill all dandelions with chemical products. Or they dig them out at the roots—only to see them grow right back.

    {#blank#}2{#/blank#} They are a great source of vitamin K and also are a good source of vitamins A and C. They also have vitamin E, folate and small amounts of other B vitamins. Also, they provide lots of iron, calcium, magnesium and potassium.

    Besides nutrition, another great thing about dandelions is that you can eat every part of them—from the bottom of the roots to the top of the flower. {#blank#}3{#/blank#} Do not eat ones that have been treated with dangerous chemicals or are growing near high traffic areas.

    Dandelions are said to provide several possible health benefits such as helping in digestion and improving some skin conditions. They may also reduce inflammation (炎症).

    Children in many parts of the world have had the simple pleasure of blowing the soft, white dandelion tops. {#blank#}4{#/blank#} In fact, there is a game children play with dandelions that have gone to seed. Pick the white top, make a wish, close your eyes and blow! If you blow all of the seeds off in one breath, your wish will come true! {#blank#}5{#/blank#}

A. Well, that is what many children believe.

B. They watch the seeds float easily in the air.

C. At least the seeds have traveled far and wide.

D. Just make sure to take care when picking wild dandelions.

E. You can let more of this nutritious food source continue to grow.

F. Dandelions are actually one of the most nutritious foods in the world.

G. In the United States, they are considered "weeds", the name for any unwanted plant.