PTELook at the text below. In 35 seconds, you must read this text aloud as naturally and clearly as possible. You have 35 seconds to read aloud.

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A diamond that formed deep in the earth ’ s mantle contains a mineral never seen before in nature. The discovery is a rare glimpse into the deep mantle and may help reveal new information about the structure of the planet at depths of more than 660 kilometers. This can help geologists better understand how the mantle controls the earth ’ s plate tectonics.

PTERead Aloud: #601

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