When kids in parts of the world want to play, they often make soccer balls out of trash tied together with string. “{#blank#}1{#/blank#} the areas used for playing fields are often rough and rocky, millions of real balls go flat (变瘪){#blank#}2{#/blank#} 24 hours,” says Tim Jahnigen, a California businessman. Determined to solve this problem,{#blank#}3{#/blank#} created an indestructible ball called the One World Futbol.

    The ball is made of {#blank#}4{#/blank#} special material, ethylene-vinyl acetate foam. It's lightweight, it's flexible, and—{#blank#}5{#/blank#} important—it holds its shape.

    The One World Futbol needs no pump {#blank#}6{#/blank#} won't wear out, even on rough surfaces. When tested,{#blank#}7{#/blank#} withstood (经受住) being crushed by a car, and even being chewed on by a lion.

    Although it costs more to produce {#blank#}8{#/blank#} a typical soccer ball, Jahnigen estimates the One World Futbol can last 30 years. So far, it's been given to kids in 143 countries. 

The history of air conditioners (空调) started in the early days with the need to preserve food. The food{#blank#}1{#/blank#}is kept at room temperature spoils easily due to the growth of bacteria. At temperature below 4℃, the growth of bacteria reduces{#blank#}2{#/blank#}(rapid). As a result of the development in food refrigeration, other following applications include air conditioning and manufacturing processes.

    The{#blank#}3{#/blank#}(discover) of the principles of the absorption type of refrigeration in 1824 showed that liquefied ammonia (液氨) could cool air. At first, the commercially available use of air conditioning applications was based on the need to cool air for industrial processes rather than {#blank#}4{#/blank#}(person) comfort. The first electrical air conditioning{#blank#}5{#/blank#}(invent) by Willis Haviland Carrier in 1902. He was also known{#blank#}6{#/blank#}the Father of Modern Air Conditioning.{#blank#}7{#/blank#} (he) invention was designed to improve the manufacturing process of a printing factory. By{#blank#}8{#/blank#}(control) the temperature, the process was made more efficient.

    The Carrier Air Conditioning Company of America was set up by him {#blank#}9{#/blank#}(meet) the demand of better productivity in the workplace. Today, Carrier Corporation is{#blank#}10{#/blank#}biggest air conditioner manufacturer and marketing corporation in the world in central air conditioning.

    I'm Yuan Longping. Look at my sunburnt face and arms and my slim strong body and you will think I'm {#blank#}1{#/blank#} like a farmer than a scientist. In fact I {#blank#}2{#/blank#}(struggle) for the past five decades to help {#blank#}3{#/blank#}(farmer). In 1974, I began to grow a so-called super hybrid rice. This special strain of rice makes {#blank#}4{#/blank#} possible to produce one-third more of the crop in the same fields.

    I was born into a poor farmer's family in 1931. When I was young, I saw many people go hungry often. So I have devoted myself to {#blank#}5{#/blank#}(find) ways to increasing rice harvest without expanding the area of fields since I graduated from Southwest Agriculture College in 1953. Now more than 60% of the rice{#blank#}6{#/blank#}(produce) in China each year is from this hybrid strain. I am circulating this knowledge in India, Vietnam and other less developed countries to increase their harvest. Perhaps you think I am rich. {#blank#}7{#/blank#}(actual) I live a simple life. I care little for money. In my opinion, a person with too much money will have more troubles. I don't want to be famous {#blank#}8{#/blank#} I prefer to have more time to do my research. In my free time I love listening to music, playing mah-jong and reading. I once had a dream, in {#blank#}9{#/blank#} I saw rice plants as tall as sorghum and each ear of rice was as big as an ear of corn and each grain of rice was as huge as a peanut. Now I have another dream-to export my rice so that it can {#blank#}10{#/blank#}(grow) all over the world.

    A teahouse is a special house which primarily serves tea and other light refreshments(茶点). Its function varies widely{#blank#}1{#/blank#}(depend)on the culture. In China, a teahouse is a place {#blank#}2{#/blank#}people gather to enjoy tea, chat and socialize. It {#blank#}3{#/blank#}(consider) as a symbol of Chinese tea culture and people's leisure lives.

    Chinese teahouses enjoy a long-standing history. They developed from tea {#blank#}4{#/blank#}(stand) in the Western JIN Dynasty, took shape in the Tang Dynasty, developed {#blank#}5{#/blank#}(gradual) in the Song, Yuan, Ming and Qing Dynasties and became booming in modern times.

    In the Song Dynasty, teahouses spread all over the cities and villages, at a rate comparable with that of restaurants. The owners preferred to decorate their teahouses {#blank#}6{#/blank#}paintings of celebrities or rare and precious plants {#blank#}7{#/blank#}(attract) customers. In the Ming and Qing Dynasties, the number of teahouses went beyond that of restaurants, gaining much {#blank#}8{#/blank#} (wide) popularity and becoming more famous. Later, the acculturation(文化植入)of western culture forced traditional Chinese teahouses to take on{#blank#}9{#/blank#} new look.

    Since reform and opening-up, with the rapid development of the economy and evident improvement of people's living standards, teahouses{#blank#}10{#/blank#}(flower) in China.