摘要：6．The moment the 29th Olympic Games open.the whole world cheered. A．declared B．have been declared C．have declared D．were declared 解析:句意:“二十八届奥运会被宣布开幕的那一刻全世界都为此而欢呼. the moment＝as soon as.引导时间状语从句.用一般过去时.故答案是D. 答案:D

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