单选题 Columbus had accomplished one of the most amazing and courageous ______ in history.
A. performance B. feats C. events D. acts

【正确答案】 B

【答案解析】[解析] 词义辨析。
A. performance行为，成绩，表演，执行；B．feats技艺，功绩，壮举；C. events事件，结局，D. acts行为，表现。accomplished feats完成/实现……的壮举。