【单选题】When will people probably be able to live on Mars
A.In 200 years.
B.In 10,000 years.
C.In 100,000 years.
D.Unknown.
【单选题】When will people probably be able to live on Mars
A.In 200 years.
B.In 10,000 years.
C.In 100,000 years.
D.Unknown.
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