Cultural exchanges will mark a milestone in the history of China-Australia cultural relations and will lead to ongoing cultural______for years to come.

A、 collaboration
B、 elaboration
C、 distribution
D、 expansion

【正确答案】 A

【答案解析】解析：collaboration“协作”；elaboration“精心制作，苦心经营”；distribution“分配，分发，销售”；expansion“开展，膨胀”。根据题意，本题选A。