ItwasnotuntilthenthatIcametorealizethatknowledge

It was not until then that I came to realize that knowledge from practice.

A. comes

B. has come

C. came

D. had come

正确答案：A

答案为A知道那时我才意识到知识来源于实践that引导的宾语从句表示的客观真理因此时态不受主句影响用一般现在时