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第11题答案:gold 对应原文:第4段:Traces of such tunnels used to mine gold can still be found at the Dolaucothi mines in Wales 答案解析:根据Dolaucothi定位到第4段,附近提到的矿石种类只有gold,由此确定答案。 第12题答案:(the)architect(‘s)(name) ...