with the new machine，a search party went into the cave，hoping to find buried treasure.
A. Being armed
B. To be armed
C. Armed
D. To arm
网友回答
A. Being armed
B. To be armed
(答案→)C. Armed
D. To arm
解析：句意为：在新机器的武装下，那支搜索小分队走进了山洞，希望能找到埋藏的财宝。a search party与arm之间为被动关系，故用过去分词作状语。arm sb.with sth.武装，装备。