问题
名词解释
岩石的塑性
答案
参考答案：
是指岩石在外力作用下产生的变形，当取消外力后，仍保持变形后的形状和尺寸的性质。
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岩石的塑性
参考答案：
是指岩石在外力作用下产生的变形，当取消外力后，仍保持变形后的形状和尺寸的性质。
Who designed the first helicopter(直升机)? Who __1___some of most famous pictures in the world? Who knew more about the human body than most ___2___of his time? There is an answer ___3___ all these questions --Leonardo da Vinci (达•芬奇) Leonard may have been the greatest genius ___4___ have ever known. He lived in Italy around the year 1500, but many of his inventions seem modern to us today. For example, one of his notebooks has drawings of a helicopter. Of course, he couldn’t ____5___ a helicopter with the things he had. But scientists say his idea would have worked. But Leonard ___6___ an inventor. He was one of the greatest artists of his day. By the time he was twenty years old, he was called a master(大师) painter, and as he got older he became ___7__ more famous. Sometimes he drew a hand in ten different ways ____8___he was ready to paint. Many of Leonardo’s wonderful paintings are still with ____9___today. You may know one of his most famous works-- the ___10___ woman known as the Mona Lisa.
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