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Many useful machines were invented by inventors. These machines have 小题1:c ____ the world a lot. There are many great 小题2:in the world, and Watt(瓦特) was one of them.
Watt was English. When he was a child, he liked to ask questions and he was always 小题3:.______(学习)hard. One day, he was sitting in the kitchen with his grandmother, she 小题4:_ ___（放）a kettle (水壶) on the stove (火炉). Soon steam (蒸汽) began to come 小题5: 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 小题6:s _____in it. It pushes the lid up." said Watt. His grandmother told him that it was only steam. He asked his grandmother,"小题7:W __ does the steam come up under the lid?" His grandmother said that it came from hot water. Watt said to 小题8:____（他自己）,"The steam is so strong 小题9:______it can push things. The steam will be much小题10:_____ if there's more water."
Later, Watt tried hard and made steam work for people. He invented the first engine.
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A small boy and his father were walking b to their home. It suddenly began to rain h .They did not have their umbrellas w them and there was nowhere to hide from the rain, so they were soon all w , and the small boy didn’t feel happy. For a long time while they were walking back to their home through the rain, the boy was thinking. Then at l he turned to his father and said to him,“Why does it rain, Father? It isn’t very nice, is it?” “No, it i very nice, but it’ s useful, Tom,” answered his father.“It rains to make fruit and vegetables g for us.” Tom thought about this for a m ,and then he a ,“Then, w does it rain on the road, Father?”
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W: 1._____ ?
M: Yes, I want to find a pen pal, of course he's a boy.
W: 2. _____?
M: Of course different from me. I am too wild, 3. ______. Also, he is a little more
clever.
W: Does he do the same things as you?
M: Sure.You know, 4. _____, so soccer and baseball should be his favorite sports.
W: OK, I see. Here's the form.5._____ , then we'll call you.
M: OK, thank you.
W: You're welcome.