Module 4 Great Scientists Section Ⅳ Other Parts of the Module [原文呈现]Rockets①Today rockets are very advanced② machines which we can use to send astronauts into space③
They are also used in firework displays④ to celebrate great events⑤, such as the end of the Olympic Games or the beginning of the new millennium⑥ in the year 2000
Rockets were probably invented⑦ by accident⑧ about 2,000 years ago
The Chinese had a form of gunpowder⑨which was put in bamboo tubes⑩ and thrown into⑪ fires to make explosions⑫ during festivals
Perhaps some of the tubes jumped out of⑬ the fire instead of⑭exploding⑮ in it
The Chinese discovered that the gas escaping⑯ from the tube⑰ could lift it into the air
The idea of the rocket was born
[读文清障]①rocket/'r kIt/ɒn
火箭 ② advanced adj
高级的;先进的③which 引导限制性定语从句,whi