单选题 The explorers came forward with gifts of ducks and flour-cakes and ______ troughs of water for the horses to drink.
A. held in B. held with C. held under D. held up

【正确答案】 C
【答案解析】[解析] 句意是：探险者们主动带来了鸭子和蛋糕作为礼物，停在水槽边，让他们的马饮水。hold in“控制，抑制”；hold with“赞成，容忍”；hold up“停顿”。没有hold under这个搭配。根据句意推出正确答案是C选项。