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Between 14,000 and 8,000 B.C. the ice cap that covered northern Asia, Europe, and America began to melt, uncovering vast new areas that were to be occupied by migrating peoples moving northward.
A. began to melt, uncovering vast new areas that were to be occupied
B. began melting, to uncover vast new areas to be occupied
C. began, by melting, to uncover vast new areas for occupation
D. began, after melting, uncovering vast new areas which are to be occupied
E. would begin to uncover, through melting, vast new areas for occupation
OA：A 这里的 uncovering不应该有逻辑主语吗？？逻辑主语是ice cap？感觉不通啊。。 | 
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发表于 2019-12-6 14:19:46
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