问题
选择题
From the dates________on the gold coin，it is confirmed that it was made five hundred years ago.
A．marking
B．to be marked
C．marked
D．having been marked
答案
答案：C
答案 C [marked在句中作定语。不定式作定语时，表示将来的动作；现在分词作定语，表示主动、进行；过去分词作定语，表示被动、完成。因为dates 是被标在gold coin 上，所以用过去分词表示被动。]