China’s winning the host of the Olympic was an exciting moment, all Chinese will never forget.
A. that
B. it
C. one
D. what
网友回答
A. that
B. it
(答案→)C. one
D. what
解析：用one作an exciting moment的同位语，同时又是后面定语从句的先行词，从句all Chinese will never forget后缺少宾语，应用关系代词，one后面省略了which /that，所以选C。