A.About 700 million light-years from Sun.B.About 700 million light-years from Earth.C.

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A.About 700 million light-years from Sun.

B.About 700 million light-years from Earth.

C.About 700 million light-years from the black hole.

D.About 700 million light-years from a galaxy.

请帮忙给出正确答案和分析,谢谢!

热搜:烟头的中心温度可达700到800摄氏度