At its center, the sun has a density of over a hundred times ______and a temperature of 10 to 20 million degrees centigrade.

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问题 At its center, the sun has a density of over a hundred times ______and a temperature of 10 to 20 million degrees centigrade.

选项 A、that of water
B、of water
C、than that of water
D、water

答案A

解析

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