Question

10. ―Are your family ready for rafting?

―Yes, I really want my children to experience   that  they are young.

A. I       B. while

C. unless    D. if

Answer 1

10.   B考査状语从句的连接词。experience是及物动词，that作其宾语，其后是一个状语从句。答语句意：是的，我事实上想趁孩子们小的时候让他们体验漂流。此处while意为"趁着"。