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
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. 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：D