单选题 Under its Charter, the first stated aim of the U.N. was______.

A、 to promote social progress
B、 to prevent a third world war
C、 to revise international laws
D、 to maintain international peace

【正确答案】 B

【答案解析】文中第二段开头就说了“we the people of the UN determined to save succeeding generations from the scourge of war which twice in our lifetime has brought untold suffering to manking．”，从这句话可以看出，联合国建立的第一个重要的目标是避免又一次的世界大战。