【题目】Meeting my uncle after all these years was an unforgettable moment, _______ I will always treasure.
A. thatB. one
C. itD. what
在线课程【答案】B
【解析】
试题it用于替代上文中特定事物；that常用来指代不可数名词或受到限定的单数可数名词，均不合本题意。本题所设定的代词是an unforgetable moment的同位语。one之后是省略了关系代词的定语从句。