问题
选择题
The only system I know ____ will help you remember what you have heard at a lecture is the system of keeping notes.
A．what
B．that
C．where
D．one
答案
答案：B
题目分析：句意：我知道的记住在课堂上所学内容的唯一方法就是记笔记。这个句子包含一个定语从句，关系词在从句中作主语，指物，故用that，选B。