七、短文填词。根据短文大意，填入恰当的单词。（20分，每空2分） Many useful machines were 77 by inventors. These machines

七、短文填词。根据短文大意，填入恰当的单词。（20分，每空2分）
Many useful machines were     77     by inventors. These machines have     78    
the world a lot. There are many great inventors in the world, and Watt was one of them.
Watt was English. When he was a child, he liked to ask questions and he was always     79    hard. One day, he was sitting in the kitchen with his grandmother, he     80     a kettle(水壶) on the stove(火炉). Soon steam(蒸汽) began to e     81     the kettle and the lid(盖子) was shaking. Watt asked what was in the kettle. His grandmother said, “Water, my child.”“But I know there’s     82_ in it. It pushes the lid up.” said Watt. His grandmother told him that it was only steam. He asked his grandmother,“    83     does the steam e up under the lid?”His grandmother said that it came from hot water. Watt said to     84     ,“The steam will be much strong. It can push things. The steam will be much     85     if there’s more water.”Later, Watt tried hard and made steam     86     for people. He invented the first engine.
77、    78、     79、    80、    81、    
82、    83、    84、    85、    86、    invented/made   78、changed /helped   79、studying/working     80、saw    81、outside