in their work. Before they could sueed, they had to overe 1_________(数 以千计的 )difficulties which were put in their way. The following is one of such examples. George Stephenson (1781~~1848), a 2__________ ( 著名 的)British inventor madethe first train in 1825, using a stream engine. Whenhe was experimenting with the engine 3________ ( 在 火车上 ), he met with troubles from the government, the newspapers and the gentlemen in the country. They said that the 4________ ( 噪音 )and the smoke would kill cows, horses and sheep, that the engine would burst or that the hot coals from it would set fire to their houses. People believe 5___________ ( 他们 说的话 ). George Stephenson told the people that the train could go on small rails, could pull carriages 6________ ( 装满 ) goods and passengers and that there was no great danger to them. It was a very difficult matter for him to make them believe. 7________ ( 然而 ), after some time, he was able to do it, and the first train, that was driven