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| Twentieth Century Inventions ●●●1903-The first flight succeeded.  In 1900, Wilbur Wright said flight was possible for man. After much work he and his brother Orville Wright made this dream come true. On December 17, 1903, the brothers made the first successful airplane flight on a windy beach at Kitty Hawk, North Carolina. The brothers’ plane flew 120 feet. Although the flight lasted only 12 seconds, it moved the course of history in a new direction. ●●●1935-Nylon was invented.  In 1928, a new chemical lab was opened to make a kind of man-made materials. Wallace Carothers took part in the team when he was 32 years old. In 1934, he made fibers (纤维), but the fibers were quite weak. He didn’t give up. After many experiments, he produced the long and strong fibers in 1935. They named the fibers "nylon". Carothers was very satisfied with his work. Nylon hit the markets in 1939, and quickly became a replacement of silk. But it was a pity that he didn’t see the wide use of his invention. He died in April, 1937. ●●●1968-The computer mouse was first shown in public.  As a graduate student, Douglas Engelbart began to imagine ways in which all sorts of information could be on screens. In 1964, Douglas Engelbart made the first computermouse. The computer mouse had a wooden shell with two metal wheels. In 1968, the first computer mouse appeared in public. It was named "mouse" because a tail came out at the end. In later years, the computer mouse became more and more important. Douglas Engelbart changed the way that computers worked. Now computer mice are becoming increasingly useful. And there are many different shapes of computer mice in the world. | ||||||||||||||||
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___________| 1. Inventor(s) 2. It /The airplane/ The flight/ The invention/ The two brothers moved the course of history in a new direction. 3. It /Nylon/ The invention/ The fibers/ became a replacement of silk. / It took the place of/ replaced silk. 4. computer mouse 5. It /The computer mouse/ The invention/ Douglas Engelbart changed the way that computers worked. |
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| The Great Wall of China has a history of over two thousand years. It runs from the east to the west in North China. It  is about 6,300 kilometers 1 . It is often 2 "Ten-thousand-Li Great Wall". It is oneof the “Seven Wonders” of the ancient world. The Great Wall is wide enough for ten men to walk 3 . Horses can also run along it, too. The Great Wall 4 stones and bricks（砖）. There are huge stones on 5 side and on the highest part. But now some sections of it are worn out. There are tall watch-towers alone the Great Wall. Once upon 6 time, the soldiers kept watching the enemies（敌人） in the watch-towers day and night. They made 7 on the towers to 8 each other when the enemies came. Nowadays we don’t use the Great Wall to keep away the enemies any more. It is a famous place of interest to all the people in 9 . Every year 10 people come to visit it form all over the world. | |||
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The Chinese New Year is now known 1 the Spring Festival because it starts from the beginning of | ||||
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who sit closer to them.