问题
选择题
The purpose of the research had a more important meaning for them than_______.
A．ours
B．those of ours
C．it had for ours
D．it did for us
答案
答案：D
这题考查指代的用法，it代指The purpose of the research，did代指had a more important meaning，句意是：这项调查的目的对他们比对我们的意义更重大。选D。