Youth sport has the potential to accomplish three important objectives in children's development. First, sport programs can provide youth with opportunities to be physically active, which can lead to improved physical health. Second, youth sport programs have long been considered important to youth's psychosocial development, providing opportunities to learn important life skills such as cooperation, discipline, leadership, and self-control. Third, youth sport programs are critical for the learning of motor skills; these motor skills serve as a foundation for future national sport stars and recreational adult sport participants. When coachers develop activities for youth practices and when sport organizations design youth-sport programs, they must consider the implication of deliberate play and deliberate practice.

    Research from Telama （2006） states that regular participation in deliberate play or deliberate practice activities during childhood and youth （ages nine to eighteen） increases the likelihood of participation in sports during adulthood by six times for both males and females. Côté （2002） defines deliberate play activities in sport as those designed to maximize enjoyment. These activities are regulated by flexible rules adapted from standardized sport rules and are set up by the children or by an involved adult. Children typically change rules to find a point where their game is similar to the actual sport but still allows for play at their level. For example, children may change soccer and basketball rules to suit their needs and environment （e.g. in the street. on a playing field or in someone's backyard）. When involved in deliberate play activities, children are less concerned with the outcome of their outcome of their behavior. （whether they win or lose） than with the behavior. （having fun）.

    On the other hand, Ericsson （1993） suggests that the most effective learning occurs through involvement in highly structured activities defined as deliberate practice. Deliberate practice activities require effort, produce no immediate rewards, and are motivated by the goal of improving performance rather than the goal of enjoyment. When individuals are involved in deliberate play, they experiment with different combinations of behaviors, but not necessarily in the most effective way to improve performance. In contrast, when individuals are involved in deliberate practice, they exhibit behavior. focused on improving performance by the most effective means available. For example, the backhand skills in tennis could be learned and improved over time by playing matches or by creating fun practice situations. However, players could more effectively improve their backhand performance by practicing drills that might be considered less enjoyable. Although drills are used in most effective means available practice might not be the most enjoyable, they might be the most relevant to improving performance.

    （Note: Answer the questions or complete the statements in NO MORE THAN TEN WORDS）

    Lindsay Renwick, the mayor of Deniliquin, a country town in New South Wales, misses the constant whir（嗡嗡声）of the rice mill whose giant fans dried the rice. The Deniliquin mill, the largest rice mill in the Southern Hemisphere (南半球), once processed enough grain to meet the needs of 20 million people globally. But six years of drought have had a destructive effect, reducing Australia's rice crop by 98 percent and leading to the mothballing of the mill last December.

    Drought affects every agriculture industry based in Australia, not just rice – from sheep farming, the country's other backbone, to the cultivation of grapes for wine, the fastest-growing crop there, with that expansion often coming at the expense of rice. The drought's effect on rice has produced the greatest impact on the rest of the world, so far. It is one factor contributing to skyrocketing prices, and many scientists believe it is among the earliest signs that a warming planet is starting to affect food production.

    Researchers are looking for solutions to global rice shortages – for example, rice that blooms earlier in the day, when it is cooler, to fight against global warming. Rice plants that happen to bloom on hot days are less likely to produce grains of rice, a difficulty that is already starting to emerge in inland areas of China and other Asian countries as temperatures begin to climb. 'there will be problems very soon unless we have new varieties of rice in place,” said Reiner Wassmann, climate change director at the International Rice Research Institute (IRRI). The recent reports on climate change carried a warning that could make the news even worse: that existing models for the effects of climate change on agriculture did not yet include newer findings that global warming could reduce rainfall and make it more variable.

    Yet the effects of climate change are not uniformly bad for rice. Rising concentrations (浓度) of carbon dioxide, the main greenhouse gas, can actually help rice – although the effect reduces or disappears if the plants face unnecessary heat, inadequate water, severe pollution or other stresses. Still, the flexibility of farmers here has persuaded some climate experts that, particularly in developed countries, the effects of climate change may be relieved, if not completely avoided. “I'm not as negative as most people,” said Will Steffen, director of the Fenner School of Environment and Society at Australian National University. “Farmers are learning how to do things differently.”

    Meanwhile, changes like the use of water to grow wine grapes instead of rice carry their own costs, as the developing world is discovering. “Rice is an essential food,” said Graeme Haley, the general manager of the town of Deniliquin. “Wine is not.”

    There is a woman named Tao Porchon-Lynch. She was born in India in 1918. So, if you do the math, she's 99. And at the age of 99, she has been recognized as the oldest yoga teacher in the world. She has been teaching yoga in a gym in her hometown, full-time, since 1967.

    But that's not all she's done. She has also been a model, actress and dancer. She became a model after she graduated from high school. She acted in more than ten fields. She won a lot of medals as a dancer in many competitions. She once said, “If you try your best and never give up, nothing is impossible.” And she is a firm believer in positive thinking. She dreams the impossible dreams, and she is also well known as a thinker.

    Tao Porchon-Lynch is not the person who talks the talk; she is the person who walks the walk. When she makes up her mind to do something, she takes action to do it without delay. At the age of 85, she learned how to dance and even won several dance competitions. She offers this piece of advice to others, “Don't put off till tomorrow what you can do today. Don't delay. Tomorrow never comes.”

    So, what about retirement? At 98, she is well past the age when many people make retirement plans. Retiring, it turns out, is not Tao's style. “A little girl, who is only 6 years old and is now learning yoga with me, once asked me, ‘Dear granny, what are you going to do when you retire?'” Tao Porchon-Lynch told the little girl that she had no plans to retire but instead would continue to teach yoga and dance her way to next planet.

    Some years ago industries had more freedom than they now, and they did not need to be as careful as they must today. They did not need to worry a lot about the safety of the new products that they developed. They took little notice of the health and safety of the people who worked for them. Often new products were dangerous for the people who used them and conditions in the work place had very bad effects on the health of the workers.

    Of course, sometimes there were real disasters which attracted the attention of governments and which showed the need for changes. Also scientists who were doing research into the health of workers sometimes produced information which governments could not ignore. At such times, there were inquiries into the causes of the disasters or the problems. New safety rules were often introduced as a result of these inquiries; however, the new rules came too late to protect the people who died or who became seriously ill.

    Today many governments have special departments which protect customers and workers. In the U. S, for example, there is a department which tests new airplanes and gives warnings about possible problems. It also makes the rules that aircraft producers must follow. Another department controls the foods and drugs that companies sell. A third department looks at the places where people work, and then reports any companies that are breaking the laws which protect the health and safety of workers. Of course, new government departments and new laws cannot prevent every accident or illness, but they are having some good results. Our work places are safer and cleaner than before. The planes and cars which we use for travel are better. Producers are thinking more about the safety and health of the people who buy and use their products.

    “Sorry for keeping you waiting. I left my cell phone at home, so I went hack to get it,” Adam said as he apologized to Vicky after arriving an hour late for their first date. Vicky tried to be polite, so she forced a smile and replied, “It's all right. Let's order something to eat.” While they were waiting for their food. Vicky discovered that Adam had been checking his cell phone. Just as she got the chance to talk to him Adam's cell phone rang and he answered it without delay. He talked continuously and totally ignored his date, who was sitting right next to him. Twenty minutes later, when Adam finally hung up and turned hack to Vicky, he saw nothing but an angry face. “Why don't you date your cell phone?” said Vicky. Then, she stood up and shouted, “Don't ever call me again!”

    We can understand why Vicky was so angry at Adam. In fact, like Adam, many people in modern society can't stand to be separated from their cell phones. With their cell phones, they talk to others, listen to music, check e-mall, and download applications as well as photos. Their dependence on this technological device has become so great that the cell phone is now often considered a necessity rather than a luxury (奢侈品). Some people cannot even imagine life without their cell phones. As a result, a psychological(心理学的) phrase known as "disconnect anxiety" was born.

    According to psychologists, when these people are not using their phones, they may start to feel uneasy. Some feel socially separated without their cell phone. Others worry about not being able to respond to emergencies in time. Still others are so psychologically influenced by their cell phones that they often believe their phones have been ringing without their knowledge. Those who suffer from disconnect anxiety frequently check their cell phones for any missed calls or messages. In addition, they like to keep in touch with their friends-even just to kill time. What's more, if these heavy cell phone users discover that they have forgotten to bring their cell phones along with them, they will insist on returning home to get their "cells".

    It's nice to have a cell phone, and it makes sense, of course, to enjoy all the advantages this clever product has brought. However, we need to use it wisely. For example, when we are doing something important, we should turn off our cell phones to concentrate on our work. As for Adam, he had better leave his cell phone at home on his next date with Vicky-if he gets another chance to go out with her!