---It's said that mainland superstar singer Sun Nan will hold a concert at the Workers' Stadium on December 24．---________!I never heard about it．A.CongratulationsB.You are madC.What a great supriseD.How exciting a concert
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C解析考查交际用语。此事尚未发生，所以不存在祝贺之意，排除A．从下句中的后半句可以推知听话人对上述事情感到惊讶。