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【单选题】

心宿二（大火星）位于（）。

A.
天蝎座
B.
巨蟹座
C.
座
D.
仙后座
题目标签：心宿二火星
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A.
there is no life there now
B.
there is a large amount of water at the poles
C.
the Mars may be able to support life in the future
D.
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A.
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B.
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C.
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D.
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A.
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B.
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C.
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D.
载热体放热
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A.
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B.
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C.
地外行星
D.
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