【正确答案】 C

【答案解析】[解析] one of the+名词复数做主语的句子，主句谓语动词用单数形式，定语从句的谓语动词用复数形式。如果在one前有the或the only，这时定语从句的谓语动词用单数形式。如：One of the books that have pictures is very interesting. The only one of the books that has pictures is very interesting.