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2.“Until recent times unknown to man” in paragraph I means that ________.
A.no man has been to the Antarctica recently
B.we knew nothing about this large continent till that time
C.a great landmass is still not known to man till today
D.our knowledge of Antarctica was very limited at the time this article was written
A.no man has been to the Antarctica recently
B.we knew nothing about this large continent till that time
C.a great landmass is still not known to man till today
D.our knowledge of Antarctica was very limited at the time this article was written
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