A. the exposed ground B. a very long time C. the extra heat D. recorded history E. previously published studies F. rapid exagger

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问题 A. the exposed ground
B. a very long time
C. the extra heat
D. recorded history
E. previously published studies
F. rapid exaggeration of impacts
Arctic ice has never been melting so fast in______.

选项

答案D

解析 根据第一段第三句“…recorded history.”可知,空格处应填D项。
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