题目内容
| 完形填空。 | ||||
| Flying like a bird has been the dream of humans since ancient times. Last week a group of modern birdmen put their courage on their wings and 1 gravity in Hangzhou, Zhejiang Province. "Yes, you can buy a ticket and fly to another city. But running with your own wings and feeling your feet ready to 2 is totally different, "Dong Fang, a middle school student in Hangzhou who 3 a home- made aircraft competition, said in an excide voice. 4 by the Intemational Bognor Birdman Competition in the UK, the competition in Hangzhou was a similar event. The Bognor Birdman Competition startde in l97l in the England coastal city Bognor. People ran off the end of a pier (码头)with their own aircraft in a(n) 5 to "fly" the farthest distance. In the competition, a teacher called Ni was amazed to see how imaginative the students were. He was surprised to see his students create 10 different aircrafts with all kinds of material 6 in the past month. "We'd rather call ourselves dreamers 7 pilots because whether our wings really leave the ground,our dream really flies," said Dong Fang. Jing Yuchen and his team named their plane "weiming E", which 8 an unknown goose. The 17-year-old boy deeply believes their goose of steel pipe and sailcloth will honour its name by successfully making it fly. "Our work is much more imaginative than others. With several colourful balloons on its back and a pair of light plastic wings, it is 9 the most eye-catching work, if not the best," said Yu Liang, another student. "Although nlost of those home-made aircrafts cannot really take the boys flying, the boys' braveness and 10 in this project will encourage every one of them to fly high in the future," Ni said. | ||||
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1-5: ACCBC 6-10: ADBBC
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| From the beginning of human history, people have used oils from seeds and nuts. Most of the time these oils are used as food, especially in cooking. But sometimes they have other uses. For example, oils are used in paint and in cleaning products like soap. Oil is separated from seeds by using pressure. A machine called a press is often used. The first step in pressing the oil from seeds is to crush the seeds between two stones. The crushed seeds are then put into a cloth bag and the bag is hung up. Some of the oil will flow out of the bag and can be collected. But some oil will remain in the crushed seeds inside the bag. The easiest way to get the rest of the oil out is to place heavy rocks on the crushed material. Another method is to place several cloth bags on top of each other in a box. Then a long wooden stick is used to slowly push a heavy cover down on the bags. Great pressure is produced in this way. Much greater pressure can be produced by using a machine, a hydraulic jack (液压千斤顶). The greater the pressure, the more oil win be produced. Small presses are important in areas where electricity or gasoline cannot be used. They are also a good way to test if a local market for oil exists. Small batch presses can be made of local materials. Their cost is low. They are not difficult to operate. And they are easy to repair. The small presses produce good quality oil. But the work is hard. And getting all the oil from the seeds can be difficult. If there is a large supply of seeds, then hand-operated presses may not be enough to support a business. Large, powered presses that can operate all day are needed. | ||||||||||||
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