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A．Man will probably be able to live there in 200 years.B．Scientists are rather pessimistic about it.C．Man will probably be able to live there in 100,000 years’ time.D．Scientists are optimistic about overcoming the difficulties soon.
A．Man will probably be able to live there in 200 years.
B．Scientists are rather pessimistic about it.
C．Man will probably be able to live there in 100,000 years’ time.
D．Scientists are optimistic about overcoming the difficulties soon.
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E
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