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It is said eportedestimatedknown

Scientists know that the combination of extreme heat and pressure changes carbon into diamonds. Such heat and pressure exist only in the hot, liquid mass of molten rock deep inside the earth. It is th

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Unit 2 pizza In the pizza hot Id like to order a small pizza All right, do you want thin or thick crust? Oh, thin, I guess I am trying to loss weight You dont have to Thanks What about toppings？all pizzas come with cheese and tomato sauce, what els

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发表于:2019-01-20 / 阅读(146) / 评论(0)

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A very little of this had been known for some time. People laying ocean-floor cables in the nineteenth century had realized that there was some kind of mountainous intrusion in the mid-Atlantic from the way the cables ran, but the continuous nature a

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To be sure, Wegener made mistakes. He asserted that Greenland is drifting west by about a mile a year, which is clearly nonsense. (It's more like half an inch.) Above all, he could offer no convincing explanation for how the landmasses moved about. T

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31. Although apparently rigid, bones exhibit a degree of elasticity that enables the skeleton to withstand considerable impact. 31. 骨头看起来是脆硬的，但它也有一定的弹性，使得骨骼

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