South Carolina’s mineral resources are abundant, but not all of them can be lucratively mined.

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问题 South Carolina’s mineral resources are abundant, but not all of them can be lucratively mined.

选项 A、profitably
B、safely
C、easily
D、extensively

答案A

解析 lucratively赚钱地,有利可图地。profitably有利地,有益地。safely安全地。easily容易地。extensively广泛地。
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