The list of candidates for greatest men of the 20th century is as short as it is extraordi

The list of candidates for greatest men of the 20th century is as short as it is extraordinary. Franklin Roosevelt is the obvious American 【C1】______. He guided the United States safely through the centurys gravest damages, the Great 【C2】______and World War II. His long lasting New Deal imprint still【C3】______America today. Let us not forget giants of science like Albert Einstein or Thomas Edison. But the list would not be complete【C4】______ the name of Nelson Mandela, the【C5】______South African President who died on Thursday at 95. Its hard to name anyone, anywhere, in any time whose life is quite a【C6】______for his. Mandela led his people to freedom, ending the apartheid(种族隔离)rule of South Africas 【C7】______white-minority regime. But neither of those men,【C8】______ the others mentioned here, was put to such an extraordinary personal test. All you need to know to grasp the【C9】______ of Mandela is this: He spent 27 years in prison. He was given no hope and allowed little【C10】______ with the outside world. Yet instead of yielding to his plight—or【C11】______his cause by speaking a few words that【C12】______ him free—he persisted, fighting against all odds and emerging 【C13】______, a leader of such stature that his 【C14】______could not stand against him. And then, at his moment of【C15】______, with the presidency of South Africa in his hands, he 【C16】______not revenge for all that had been done to him【C17】______ racial peace for his people, black and white, which—incredibly—he achieved. Such is the power of historys few【C18】______ great leaders and the examples they set. If Mandela could suffer【C19】______he did without seeking revenge, then how could others do any less？ And how could the nations fearful and suspicious white minority【C20】______the olive branch？

【C1】

A．applicant

B．candidate

C．participant

D．competitor

请帮忙给出正确答案和分析，谢谢！