For most city people, the elevator is an unremarkable machine that inspires none of the enthusiasm or interest that Americans afford trains, jets，and even bicycles. Dr. Christopher Wilk is a member of a small group of elevator experts who consider this a misunderstanding. Without the elevator, they point out, there could be no downtown skyscrapers or tall buildings, and city life as we know it would be impossible. In that sense, they argue，the elevator's role in American history has been no less significant than that of cars. In fact, according to Wilk_? the car and the elevator have been locked in a “secret war” for over a century, with cars making it possible for people to spread horizontally (水平地)，and elevators pushing them toward life in close groups of towering vertical (垂直的)columns.

    If we tend to ignore the significance of elevators, it might be because riding in them tends to be such a brief, boring, and even awkward experience^one that can involve unexpectedly meeting people with whom we have nothing in common, and an unpleasant awareness of the fact that we're hanging from a cable in a long passage.

    In a new book, Lifted, German journalist and cultural studies professor Andreas Bernard directed all his attention to this experience, studying the origins of elevator and its relationship to humankind and finding that riding in an elevator has never been a totally comfortable experience. “After 150 years, we are still not used to it”， Bernard said. “We still have not exactly learned to cope with the mixture of closeness and displeasure.” That mixture, according to Bernard, sets the elevator ride apart from just about every other situation we find ourselves in as we go about our lives.

    Today，as the world's urban population explodes，and cities become more crowded, taller, and more crowded, America's total number of elevators—900,000 at last count, according to Elevator World magazine's “2012 Vertical Transportation Industry”一are a force that's becoming more important than ever. And for the people who really, really love them, it seems like high time that we looked seriously at just what kind of force they are.

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    Steven Stein likes to follow garbage trucks. His strange habit makes sense when you consider that he's an environmental scientist who studies how to reduce litter, including things that fall off garbage trucks as they drive down the road. What is even more interesting is that one of Stein's jobs is defending an industry behind the plastic shopping bags.

    Americans use more than 100 billion thin film plastic bags every year. So many end up in tree branches or along highways that a growing number of cities do not allow them at checkouts(收银台). The bags are prohibited in some 90 cities in California, including Los Angeles. Eyeing these headwinds, plastic-bag makers are hiring scientists like Stein to make the case that their products are not as bad for the planet as most people assume.

    Among the bag makers' arguments: many cities with bans still allow shoppers to purchase paper bags, which are easily recycled but require more energy to produce and transport. And while plastic bags may be ugly to look at, they represent a small percentage of all garbage on the ground today.

    The industry has also taken aim at the product that has appeared as its replacement: reusable shopping bags. The stronger a reusable bag is, the longer its life and the more plastic-bag use it cancels out. However, longer-lasting reusable bags often require more energy to make. One study found that a cotton bag must be used at least 131 times to be better for the planet than plastic.

    Environmentalists don't dispute（质疑） these points. They hope paper bags will be banned someday too and want shoppers to use the same reusable bags for years.

    Kung fu is one of the most popular topics of discussion among foreigners talking about China. As a discipline of kung fu with the largest number of practitioners in China, Tai Chi is gaining popularity worldwide. Tai Chi is sweeping the world thanks to its deep cultural roots and the health benefits coming from practicing it.

    The philosophy of Tai Chi features the concept of yin and yang, which is typical of Confucianism and Taoism. Tai Chi also takes in ideas from traditional Chinese medicine, including anatomy (解剖学) and physiology (生理学). It is a practice that couples hardness with softness, and it is a perfect example of traditional Chinese culture.

    Through lasting practice, learners begin to feel the positive impact (影响) of Tai Chi on their health. Unlike kung fu practices that focus on attacking and defending against enemies, Tai Chi focuses more on shaping good characters and keeping fit. By practicing Tai Chi, people will feel an improvement in their physical and psychological health by promoting a balance between yin and yang within their bodies. This is similar to Western medicine's improving people's self-healing ability and immune system.

    Tai Chi is playing an important role in presenting Chinese culture to the rest of the world, acting like a bridge between China and other countries. Recent years have seen a lot of international communication on Tai Chi. In provinces like Hebei, Henan, Shanxi and Shaanxi, where Tai Chi teaching and learning are particularly active, local governments and non-governmental institutions often organize activities and competitions for learners and fans to attend and participate in. Large sporting events hosted by China such as the Asian Games and Olympics have featured Tai Chi performances or contests. These activities have opened a window for the outside world to know more about Tai Chi, paving the way for its overseas wide spread.

    Today, Tai Chi not only belongs to China, but also to the whole world and to everyone who loves it.

    "You're going to do WHAT?" I asked my best friend, Julie, in alarm.

    "I'm going to try out for the cheerleading squad (啦啦队)," she said, eyes fixed on the ground. We had been best friends since second grade and we did everything together. We had made many plans about what we would do this year, but now she was going off on her own. I was sure that if she joined the cheerleading squad, she would become best friends with someone else and I couldn't stand the thought.

    "Why are you doing this? Do you really want to hang around with those girls instead of me?" I cried, my voice filled with anger.

    "It's not about the girls," Julie said. "It's about the sport. I want to be on the squad at the high school level because they win scholarships (奖学金) at state competitions, and I have a better chance if I'm on the squad here," she explained. "Besides," she added, "it's not like I'm leaving the country or something."

    "Goodbye," I marched off, leaving Julie standing with a sad look on her face.

The rest of that week I was unhappy, and I avoided Julie in the hall. I planned to watch the first game and ignore Julie. Instead, I was amazed by the enthusiasm and skill of Julie's cheering. Although she was the youngest member of the team, Julie enthusiastically led cheer after cheer. I saw how her face lit up with joy. I was stunned (目瞪口呆) as I realized that she loved the sport. Trying out for the team had nothing to do with me—maybe it was just something she wanted to do.

    I approached her shyly, but Julie smiled immediately. "Hey, you were really great." I began, and then added quickly, "I'm so sorry I've been rude to you about your joining the squad."

    Julie smiled and replied, "A group of us are going for ice cream. Why don't you come along?"

    Julie's quick forgiveness made my eyes burn, but I smiled in return. As I walked toward the cheerleaders, I realized there was room in Julie's life for all of us. We could save the competition for the game.

Sales Executive

    Pindan Labor Solutions is expanding and we require a Sales Executive. Working hours from Monday to Friday, 12 months a year. However, some weekend work may be required. You will be assisting our team of consultants with business development. You can get a monthly income of $5,200. Essential requirements include previous sales experience, strong communication skills, high level of computer competency (能力）,WA driver's license.

    For more information, please e-mail to Stefan @ tigerhospitality.com or phone 0452 236 541.

Martial Arts Trainer

    Go-Kan-Ryu Karate has a number of positions available for people who have an interest in the martial arts. The position will involve training new students on working days. An expected first year income of $45,000. Excellent people skills and previous experience are essential. Own car and license required.

    Please contact Tim Hort on 0285 371 464 or kvle@hospitalio.com for further information.

Workshop Manager

    Located in Wongan Hills WA, Beckman Machinery want a Service/Workshop Manager to join our successful team. Your role will be to provide the best possible service to customers, Monday to Friday. You must have trade certificate, excellent communication and computer skills. Knowledge of agricultural products is essential. You can get at least $50,000 in your first year.

    Please call Stuart 0427 111 105 or email to stuart@boekemans.com.au if any further information is needed.

Farmhand

    A general farmhand is required to work on a farm located 40kms from Condobolin. A driver's license is essential. Duties include: Sheep, Cattle work; Cropping & irrigation. Weekends off, except during sowing and harvest periods. $39,000 a year.

    If you are interested in farm work, please e-mail to diane.moisis@cwcc.nsw.edu.au or call 0167 327 047 for detailed information.

    It's nothing unusual for people to multitask nowadays. But the ability to do a number of things at the same time could be different between the two sexes.

    A team of UK researchers recently compared the performances of 120 women and 120 men in a computer test about switching(转换) between tasks of counting and shape recognition.

    Men equalled women when tasks were done one at a time. But when the tasks were mixed up, there was a clear difference. According to the paper published in the journal BMC Psychology, both women and men slowed down and made more mistakes as the switching became more rapid. But men were slower, taking 77 percent longer to answer, while women took 69 percent longer.

    To make the experiment more connected to day-to-day life, researchers tried a second test. A group of women and men were given eight minutes to complete a series of everyday tasks, such as finding restaurants on a map, doing simple math problems, answering a phone call, or deciding how they would search for a lost key in a field.

    Once again, women performed better than men in the test, especially in the key-searching task.

    Where do women get the ability to keep organized under pressure better than men? Researchers believe that it has its origins in evolution(进化). In ancient times, women had to keep an eye on children while cooking meals. Meanwhile, men only needed to focus on hunting.

    However, as with all studies, the results don't necessarily apply to every single person in the world. "We don't mean that men can't multitask, or that only women can," researcher Keith Laws of the University of Hertfordshire, UK, told BBC News. "We are saying that the average woman is better able to organize her time and switch between tasks than the average man."