with a camera a pass and several maps , the scientists set out to explore the ancient forest.
A. Equipping
B. Having equipped
C. Equipped
D. To be equipped
网友回答
A. Equipping
B. Having equipped
(答案→)C. Equipped
D. To be equipped
解析：由结构equip sb with sth被动形式为sb be equipped with sth可知, the scientists与equip之间为被动关系，所以用过去分词equipped作状语，表示完成的动作，符合题意。而D项表示未发生的被动动作，A、B项表主动。