问题
选择题
________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
答案
C
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。