The UK has limited supplies of mineral resources. The once-impor

The UK has limited supplies of mineral resources. The once-important extraction of _____ has dwindled to almost nothing.
A、zinc
B、gravel
C、tin
D、iron ore
【正确答案】：D
【题目解析】：答案选D。The UK has limited supplies of mineral resources. The once-important extraction of iron ore has dwindled to almost nothing.参见教材P145。
掌握“The British Economy by Sectors”知识点。