. The purpose of the research had a more important meaning for them than .A. oursB. those

问题补充：

. 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：

A. ours

B. those of ours

C. it had for ours

(答案→)D. it did for us

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