"We can not afford limited progress. We need rapid progress," Ban said at the Third World Climate Conference in Geneva, by the World Meteorological Organization (WMO).A.organizedB.being organizedC.organizingD.was organized
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A解析过去分词作后置定语，“由WMO组织的第三次世界气候大会”organize和conference之间是动宾关系，因此选A。