Making a good job choice is almost as good as choosing a good life. So, choosing a job is one of the most important decisions to make in life.

    For my job, there are three important things that I will consider: The first one—that I must work in an area I like—is most important to me. Someone once said if you find a job that you enjoy, then you won't have to work another day. I would like to work in an area where I can be more creative. I would like to be the most valuable member there. All this is possible only if I like what I do.

    The second one is that the area of my work must lead me to solve some new and hard problems. I would like to stay in the same area for a long time. In order for this to happen, the work must provide enough problems. More than just working to live, I enjoy making a difference and trying my best for the whole progress. I would also like to be well remunerated for my hard work, so I can lead a comfortable life with this hard-won money. Then I can provide the best for my family.

    The third important thing is that I would like to work in an area that would help other people. The work in my mind is in fields such as the army, training or management. In such areas, I can help to develop the abilities of others and bring out their best. It would be a most satisfying job to help young people to become the best that they can be. When I become old, I would like to look back with a great sense of satisfaction that thousands of people have become better persons through my work.

    I accept the idea that no one should make a choice of a job suddenly or quickly. He should decide what he wants to be in the long run. Then, he should decide how he works towards it. He should study the proper courses, read the books and speak to knowledgeable persons in that field before making a job choice. A good choice will most probably lead to a better life.

    Women are friendly．But men are more competitive．Why? Researchers have found it's all down to the hormone oxytocin （荷尔蒙催生素）．Although known as the love hormone, it affects the sexes differently．

"Women tend to be social in their behavior．They often share with others．But men lend to be competitive．They are trying to improve their social status," said Professor Ryan．

    Generally, people believe that the hormone oxytocin is let out in our body in various social situations and our body creates a large amount of it during positive social interactions （互动） such as falling in love or giving birth．

But in a previous experiment Professor Ryan found that the hormone is also let out in our body during negative social interactions such as envy．

    Further researches showed that in men the hormone oxytocin improves the ability to recognize competitive relationships, but in women it raises the ability to recognize friendship．

Professor Ryan's recent experiment used 62 men and women aged 20 to 37．Half of the participants（参与者）received oxytocin．The other half received placebo （安慰剂）．

    After a week, the two groups switched with participants．They went through the same procedure with the other material．

    Following each treatment, they were shown some video pictures with different social interactions．Then they were asked to analyze the relationships by answering some questions．The questions were about telling friendship from competition．And their answers should be based on gestures, body language and facial expressions．

    The results indicated that, after treatment with oxytocin, men's ability to correctly recognize competitive relationships improved, but in women it was the ability to correctly recognize friendship that got better．

    Professor Ryan thus concluded: "Our experiment proves that the hormone oxytocin can raise people's abilities to better distinguish different social interactions．And the behavior differences between men and women are caused by biological factors （因素） that are mainly hormonal．"

    Why do Americans struggle with watching their weight, while the French, who eat rich food, continue to stay thin? Now a research by Cornell University suggests how life style and decisions about eating may affect weight. Researchers concluded that the French tend to stop eating when they feel full. However, Americans tend to stop when their plate is empty or their favorite TV show is over.

    According to Dr. Joseph Mercola, a health expert, the French see eating as an important part of their life style. They enjoy food and therefore spend a fairly long time at the table, while Americans see eating as something to be squeezed (挤进) between the other daily activities. Mercola believes Americans lose the ability to sense when they are actually full. So they keep eating long after the French would have stopped. In addition, he points out that Americans drive to huge supermarkets to buy canned and frozen foods for the week. The French, instead, tend to shop daily, walking to small shops and farmers' markets where they have a choice of fresh fruits, vegetables, and eggs as well as high-quality meats for each meal.

    After a visit to the United States, Mireille Guiliano, author of French Women Don't Get Fat, decided to write about the importance of knowing when to stop rather than suggesting how to avoid food. Today she continues to stay slim and rarely goes to the gym.

    In spite of (尽管) all these differences, evidence shows that recent life style changes may be affecting French eating habits. Today the rate of obesity (肥胖)—or extreme overweight — among adults is only 6%. However, as American fast food gains acceptance and the young refuse older traditions, the obesity rate among French children has reached 17% — and is growing.

    Thanksgiving is an important festival in North America. We interviewed several students from the US and Canada. Here is what they have told us about their Thanksgiving experiences.

    Josie from New York, USA

    “In America, Thanksgiving is celebrated every year at the end of November. It is to remember the first group of people from Europe to live in America. When they first arrived, they found the environment strange. But they learned to survive after some native American friends showed them how to grow and find food. Thanksgiving is meant to be a traditional celebration.”

Todd from California, USA

    “Thanksgiving is the first day of Christmas shopping. That means we have four weeks to buy Christmas presents for our families and friends. For me and my friends, the most important part of the festival is the big football game on TV. The match is watched by millions of people all over America. Thanksgiving is seen as an exciting day for football!”

    Ian from Saskatoon, Canada

    “In Canada, Thanksgiving is held on the second Monday in October. On the Sunday before Thanksgiving Day, many people go to church. Thanks is given for all the good things that happened to them during the year. I always give thanks for the nice big turkey I'm going to have at the family dinner! Like all festivals, Thanksgiving is about food!”

    Katie from Maritimes, Canada

    “On Thanksgiving Day, we have dinner with all our cousins, aunts and uncles. It is always very busy. Sometimes we have two Thanksgiving dinners because we go to both our grandparents' houses. The dinner is usually attended by more than twenty people at each house! My mother and my aunts do all the cooking but the washing-up is done by me and my cousins. And that's not an easy job! But I don't mind because Thanksgiving is meant to be a time to give thanks.”

    Arriving in Sydney on his own from India, my husband, Rashid, stayed in a hotel for a short time while looking for a house for me and our children.

    During the first week of his stay, he went out one day to do some shopping. He came back in the late afternoon to discover that his suitcase was gone. He was extremely worried as the suitcase had all his important papers, including his passport.

    He reported the case to the police and then sat there, lost and lonely in strange city, thinking of the terrible troubles of getting all the paperwork organized again from a distant country while trying to settle down in a new one.

    Late in the evening, the phone rang. It was a stranger. He was trying to pronounce my husband's name and was asking him a lot of questions. Then he said they had found a pile of papers in their trash can(垃圾桶)that had been left out on the footpath.

    My husband rushed to their home to find a kind family holding all his papers and documents. Their young daughter had gone to the trash can and found a pile of unfamiliar papers. Her parents had carefully sorted them out, although they had found mainly foreign addresses on most of the documents. At last they had seen a half-written letter in the pile in which my husband had given his new telephone number to a friend.

    That family not only restored the important documents to us that day but also restored our faith and trust in people. We still remember their kindness and often send a warm wish their way.

A group of small, waggling (扭动) robots that communicate by flashing lights can make collective decisions. This is similar to the process bees use to reach an agreement on where to build their nest.

"We believe that in the near future there are going to be simple robots that will do jobs that we don't want to do, and it will be very important that they make decisions on their own," says Carmen Miguel at the University of Barcelona in Spain. She and her team tested how copying bees might help with that.

When bees go house-hunting, they communicate their preferred locations through a "waggle dance". The more a bee recommends one location, the longer and harder it waggles. Eventually other bees join them, and they reach an agreement when a majority are waggling together. Researchers previously translated this behavior into a mathematical model, and Miguel and her colleagues used it to program decision-making rules into small robots called kilobots.

Each kilobot with three thin legs had an infrared-light emitter (红外线发射器) and receiver, and a colored LED light. Within a group, kilobots could move around, turn clockwise or anticlockwise and use infrared signals to exchange information.

Ezequiel Ferrero at the University of Barcelona says that across all the experiments, kilobots reached an agreement within about half an hour, even when they didn't have many immediate neighbors to communicate with. He says that getting the right combination of how long they spend transmitting their message and how much they walk around allowed them to make a collective decision in the end.