⑪throw ...into ...把......扔进......里

　　⑫explosion/Ik'spləʊʒn/n.爆炸；爆炸声

　　make explosions制造爆炸

　　⑬jump out of从......中跳出来 　⑭instead of相反，而不是

　　⑮explode/Ik'spləʊd/vi.爆炸 ⑯escape/I'skeIp/vi.逃跑；逃避

　　⑰现在分词短语作定语，修饰the gas。

　　火箭

　　[第1～2段译文]

　　今天，火箭是我们用来将宇航员送入太空的非常先进的机器。它们也被用在庆祝重大事件的焰火表演中，像奥运会的闭幕式或2000年新千年的开始。

　　火箭可能是大约两千年前被偶然发明出来的。中国人有一种装在竹管里的火药，这种火药是节日中被用来扔进火里爆炸的。也许一些竹管从火堆里蹿了出来，而不是在里面炸开。中国人发现从竹管里释放出来的气体可以使其飞向空中。于是关于火箭的想法诞生了。

　　The first military use of rockets was in 1232. The Song Dynasty was at war with⑱ the Mongols. During the battle of Kaifeng, the Song army shot⑲ "arrows⑳ of flying fire". The tubes were attached to\s\up1(21(21) a long stick which helped keep the rocket moving\s\up1(22(22) in a straight\s\up1(23(23) direction\s\up1(24(24). Soon the Mongols learned how to\s\up1(25(25) make rockets themselves and it is possible that\s\up1(26(26) they introduced them to Europe. Between the 13th and 15th centuries there were many rocket experiments in England, France and Italy. They were used for\s\up1(27(27) military purposes. One Italian scientist even invented a rocket which could travel over the surface of\s\up1(28(28) water and hit\s\up1(29(29) an enemy ship\s\up1(30(30).

　　But not everybody\s\up1(31(31) wanted to use rockets in battles. Wan Hu, a Chinese government official\s\up1(32(32)， invented a flying chair\s\up1(33(33). He attached two big kites to the chair, and 47 rockets to the kites. The rockets were lit\s\up1(34(34)， there was a huge explosion and clouds of thick smoke\s\up1(35(35). When the smoke cleared\s\up1(36(36) Wan Hu and his chair had disappeared\s\up1(37(37). No one knows what happened\s\up1(38(38). Did Wan Hu die in the explosion? Or was he carried miles into space, becoming the world's first astronaut\s\up1(39(39)？

　　⑱at war with与......交战　at peace with与......和平共处

　　⑲shoot v．射中 shoot at向......射击(不强调射中)

⑳arrow/'ærəʊ/n.(弓)箭 \s\up1(21(21)be attached to被拴/捆到......上