题型:阅读选择 题类:模拟题 难易度:普通
This week, we are going to learn about great inventions in the world. {#blank#}1{#/blank#} The inventions were trying to make something completely different. Here is one story.
In 1945, at the end of the Second World War, Percy LeBaron Spencer, an American scientist, was working on a machine to produce powerful radio waves. {#blank#}2{#/blank#} The machine was able to cook things! Percy called it a microwave. {#blank#}3{#/blank#}However, the first microwave weighed around 350 kilograms and was as big as a fridge! {#blank#}4{#/blank#} Now millions of homes have microwaves. {#blank#}5{#/blank#}. So we can say that the microwave has changed the way we live.
A. And many people can't imagine living without one. B. When he was standing next to the new machine, a bar of chocolate in his pocket became soft. C. Many inventions were created by accident. D. In time, microwaves became smaller. E. And soon many homes began to use it. |
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