问题描述:
Many useful machines were invented by inventors. These machines have changed 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 thinking hard. One day, he was sitting in the kitchen with his grandmother, he saw a kettle(水壶) on the stove(火炉). Soon steam(蒸汽) began to comeout of 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 something in it. It pushes the lid up.” said Watt. His grandmother told him that it was only steam. He asked his grandmother,"where does the steam come up under the lid?”His grandmother said that it came from hot water. Watt said to himeself,“The steam will be much strong. It can push things. The steam will be much stronger if there’s more water.”Later, Watt tried hard and made steam work for people. He invented the first engine.
问题解答:
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