The story of mans dream of flight, of his desire to reach the stars, is as old as mankind itself. According to Greek legend, Daedalus was the first man to fly. He and his son had been kept on an island. In order to escape, Daedalus shaped wings of wax into which he stuck bird feathers. During their flight, his son flew too high and the sun melted the wax. He was drowned in the sea. The father was supposed to have continued his flight and reached Sicily, several hundred miles away. The first man to approach flying on a scientific basis was an Englishman who lived during the thirteenth century. He looked at the air about us as a sea, and he believed that a balloon could float on the air just as a boat did on water. Almost four hundred years later, an Italian priest applied his principle of air flight. He designed a boat, which would be held in the air by four hollow spheres . ach of the four balls was to be 20 feet in diameter and made of very thin copper. But his boat was never built since it was not possible to make spheres of such thin metal and such size in those days. 41 How did Daedalus manage to escape to Sicily, according to the passage? B A god came to rescue him and took him away. D He made wings of wax and flew away from the island. A he flew too far. C he fell to the ground, 43 The first scientific air flight was designed by__________. B an Englishman. D an Italian. A he could not raise enough money. C he could not find enough copper. 45 According to the last paragraph, man could not fly with flapping-wing flying machines because__________. B he knew nothing about the movement of the air. D they were made of light feathers.
做人的十条规则
我追求的生活
PROOF.ThatIdidalwayslove,
鼓励力量
生活品味
关于幸福的真谛
Throughlaneitlay
最美的心
Themornsaremeekerthantheywere
童趣童真
向远方的美景欢呼
自由飞翔
一个微笑救了一条生命
Sonnet81
优秀的标准
OneSisterhaveIinourhouse
Love爱情
Ihadaguineagolden
青春常在
村姑和牛奶罐
Thereisamornbymenunseen
每次一个
假如给你一支笔
Sleepissupposedtobe
Thereisaword
热爱生活
Mywheelisinthedark!
IhaveaBirdinspring
爱是最好的遗产
幸福的要诀
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