问题
选择题
From the dates__________on the gold coin, we decided that it was made five hundred years ago.
A．marking
B．marked
C．to be marked
D．having been marked
答案
答案：B
本题是定语从句的省略。可以将原句恢复成“From the dates（which were） marked on the gold coin'’，这样就比较容易找出答案。